CN204442765U - Switching manipulation identification circuit, switch dimming circuit, switch toning circuit and lighting - Google Patents

本实用新型公开了一种开关操作识别电路、开关调光电路、开关调色电路及照明灯具，其基本思想是，在电源开关的两端并联一电阻，在开关断开的情况下，通过该电阻可为LED灯控制器提供“记忆”所需要的微弱电流(约数十微安)。具备“记忆”所需的能量之后，再考虑解决逻辑操作层面的问题。本实用新型以最低的成本实现了有记忆功能的LED开关调光调色技术，无需遥控器，无需污染环境的电池，无需复杂的技术手段。本实用新型提供了更人性化的操作，且使得开关和LED灯的寿命更长。

The utility model discloses a switch operation identification circuit, a switch light adjustment circuit, a switch color adjustment circuit and a lighting lamp. The resistor can provide the weak current (about tens of microamperes) needed for "memory" for the LED lamp controller. After having the energy required for "memory", consider solving problems at the logical operation level. The utility model realizes the LED switch dimming and color adjustment technology with the memory function at the lowest cost, without the need of a remote control, without batteries polluting the environment, and without complicated technical means. The utility model provides more humanized operation, and makes the life span of the switch and the LED lamp longer.

开关操作识别电路、开关调光电路、开关调色电路及照明灯具Switch operation recognition circuit, switch dimming circuit, switch toning circuit and lighting fixtures

技术领域 technical field

本实用新型涉及发光二极管(LED)智能照明领域，具体而言，涉及一种具有记忆功能的开关操作识别技术，以及基于该识别技术的LED开关调光电路与开关调色电路。 The utility model relates to the field of light-emitting diode (LED) intelligent lighting, in particular to a switch operation recognition technology with a memory function, and an LED switch dimming circuit and a switch coloring circuit based on the recognition technology.

背景技术 Background technique

作为新一代的照明光源，LED逐渐得到广泛应用。与其他灯具显著不同的是，LED非常适合智能调光调色，如开关调光和开关调色、无线遥控调光和调色。智能照明是LED照明发展的大趋势。 As a new generation of lighting sources, LEDs are gradually being widely used. Significantly different from other lamps, LED is very suitable for intelligent dimming and color matching, such as switch dimming and switch coloring, wireless remote control dimming and coloring. Intelligent lighting is a major trend in the development of LED lighting.

开关调光是指，通过LED灯具的开和关来实现灯的亮度控制。例如，一个完整的三段开关调光过程描述如下：第一次开灯，LED灯以10W点亮；关掉灯，灯灭；在5秒钟以内再次把灯打开，灯的亮度变成5W，亮度减少一半，也就节能一半；再关掉灯，灯灭；在5秒钟以内再次把灯打开，灯的亮度变成2.5W，亮度只有1/4，可节能3/4；再关掉灯，灯灭；在5秒钟以内再次把灯打开，灯的亮度又变成10W，亮度达到最大。而无论灯亮度处于何种状态，只要关灯时间超过5秒钟以上，再次开灯后都回到最大亮度状态，这就是LED灯亮度状态的复位。当然，开关调光不仅可以做成三段，还可以做成其他任意段，比如两段、四段、五段、六段，甚至无极的调光。 Switch dimming means that the brightness control of the lamp is realized by turning on and off the LED lamp. For example, a complete three-stage switch dimming process is described as follows: turn on the light for the first time, the LED light is lit at 10W; turn off the light, the light is off; turn on the light again within 5 seconds, and the brightness of the light becomes 5W , the brightness is reduced by half, and the energy is saved by half; turn off the light again, and the light is off; turn on the light again within 5 seconds, the brightness of the light becomes 2.5W, the brightness is only 1/4, and it can save 3/4 of energy; turn off again Turn off the light, the light is off; turn on the light again within 5 seconds, the brightness of the light becomes 10W again, and the brightness reaches the maximum. And no matter what state the brightness of the light is in, as long as the time of turning off the light exceeds 5 seconds, it will return to the maximum brightness state after turning on the light again, which is the reset of the brightness state of the LED light. Of course, switch dimming can not only be made into three stages, but also can be made into any other stage, such as two stages, four stages, five stages, six stages, or even infinite dimming.

开关调色则指，通过LED灯具的开和关来实现灯的色温控制。这里，LED光源色温以绝对温度K来表示。色温在3300K以下，光色偏红给人以温暖的感觉，这种光一般称做“暖色光”或者“暖光”；色温在3000K至6000K之间，此色调对人无特别明显的视觉心理效果，人有爽快的感觉，故称为“中性”色温，这种光称做“中性光”；色温超过6000K，光色偏蓝，给人以清冷的感觉，这种光称做“冷色光”或者“冷光”。例如，三段开关调色温的过程为，第一次开灯，LED灯以冷光点亮；关掉灯，灯灭；在5秒钟以内再次把灯打开，灯变成暖光，亮度不变；再关掉灯，灯灭；在5秒钟以内再次把灯打开，灯的色温变成中性光，亮度依然不变；再关掉灯，灯灭；在5秒钟以内 再次把灯打开，灯的色温又变回冷光。而且，无论灯在任何色温状态下，只要关灯时间超过5秒钟以上，再次开灯后都回到冷光状态，这是LED灯色温状态的复位。类似地，开关调色温也可以做成其他段数。 On-off color adjustment refers to the control of the color temperature of the lamp by turning on and off the LED lamp. Here, the color temperature of the LED light source is represented by the absolute temperature K. The color temperature is below 3300K, and the reddish light color gives people a warm feeling. This kind of light is generally called "warm light" or "warm light"; the color temperature is between 3000K and 6000K, and this color has no obvious visual psychology for people. Effect, people have a refreshing feeling, so it is called "neutral" color temperature, this kind of light is called "neutral light"; the color temperature exceeds 6000K, the light color is bluish, giving people a cool feeling, this kind of light is called "neutral light" Cold light" or "cold light". For example, the process of three-stage switch color temperature is as follows: when the light is turned on for the first time, the LED light is lit with cold light; change; turn off the light again, the light goes out; turn on the light again within 5 seconds, the color temperature of the light becomes neutral light, and the brightness remains unchanged; turn off the light again, the light goes out; turn on the light again within 5 seconds Turn it on, and the color temperature of the light changes back to cold light. Moreover, regardless of the color temperature state of the light, as long as the light is turned off for more than 5 seconds, it will return to the cold light state after turning on the light again, which is the reset of the color temperature state of the LED light. Similarly, switch color temperature can also be made into other segments.

目前，LED灯开关调光调色存在着一个缺陷，即长时间(比如超过5秒钟)关灯后，再次开灯时灯的亮度或者色温总是默认值，比如默认最大亮度，或者默认色温是冷光。但实际上面临这样的强烈需求，如长时间关灯后，用户希望再次开灯后的亮度与上一次的亮度一样，假如上一次是50％的亮度，这一次还希望亮度为50％；或者希望再次开灯后的色温与上一次的色温一样，假如上一次是中性光，这一次还希望为中性光。不同的用户会喜欢不同的照明亮度和色温。比如，有的用户觉着25％的亮度正合适，就希望每次开灯亮度都保持25％。而有的用户喜欢50％的亮度，希望每次开灯亮度都是50％。冬天人们可能喜欢暖光，可是夏天会更喜欢冷光。年轻人可能喜欢冷光，而上了岁数的老人也许喜欢暖光。如果每一次开灯都需要重新设置自己喜好的亮度或者色温，不仅不够人性化，而且频繁的开关操作还会减短开关和LED灯的寿命。 At present, there is a defect in the dimming and color adjustment of the LED light switch, that is, after turning off the light for a long time (for example, more than 5 seconds), the brightness or color temperature of the light is always the default value when the light is turned on again, such as the default maximum brightness, or the default color temperature It's cold light. But in fact, there is such a strong demand. For example, after turning off the light for a long time, the user hopes that the brightness after turning on the light again will be the same as the previous brightness. If the brightness was 50% last time, this time the brightness is also expected to be 50%; or It is hoped that the color temperature after turning on the light again is the same as that of the last time. If it was neutral light last time, it is hoped that it will be neutral light this time. Different users will prefer different lighting levels and color temperatures. For example, some users feel that the brightness of 25% is just right, so they hope to keep the brightness at 25% every time they turn on the light. And some users like 50% brightness, and hope that the brightness is 50% every time the light is turned on. People may like warm light in winter, but they prefer cold light in summer. Young people may prefer cool light, while older people may prefer warm light. If you need to reset your favorite brightness or color temperature every time you turn on the light, not only is it not humanized, but frequent switching operations will also shorten the life of the switch and LED lights.

要满足以上用户的需求，就必须做到在关灯状态下，LED电源控制器还能“记住”关灯前灯的亮度或者色温信息。一般情况下，关灯后，就不再送电给LED电源控制器。在没有供电的情况下，电源控制器若要长时间(大于10秒钟)有记忆，容易想到的常用方案有两种。一种方案使用备用电池，另一种方案则使用可擦写存储器。这两种方案的成本都比较高。况且，电池时间长没电需要更换，LED灯的寿命可长达10年，远远比电池寿命长。可擦写存储器除擦写次数有限之外，同样很难与LED灯的寿命相匹配。此外，加入可擦写存储器，使得进一步集成也变得不可能。这是因为，可擦写半导体工艺与常用低成本CMOS工艺有很大不同，前者成本高的多。不能进一步集成也就意味着，成本难以降低，不利于商业推广。 To meet the needs of the above users, it is necessary to ensure that the LED power controller can also "remember" the brightness or color temperature information of the headlights when the lights are off. Under normal circumstances, after turning off the lights, no power will be sent to the LED power controller. In the case of no power supply, if the power controller needs to have memory for a long time (greater than 10 seconds), there are two commonly used solutions that are easy to think of. One scheme uses a battery backup and the other uses rewritable memory. Both options are relatively expensive. Moreover, the battery needs to be replaced if it runs out of power for a long time, and the life of the LED light can be as long as 10 years, which is far longer than the battery life. In addition to the limited erasing and writing times of rewritable memory, it is also difficult to match the lifespan of LED lights. Furthermore, the addition of rewritable memory makes further integration impossible. This is because the rewritable semiconductor process is very different from the commonly used low-cost CMOS process, and the cost of the former is much higher. The inability to further integrate means that the cost is difficult to reduce, which is not conducive to commercial promotion.

实用新型内容 Utility model content

针对现有技术的上述缺陷，本实用新型的目的在于，提供一种以低成本实现LED灯的记忆智能化解决方案，无需使用复杂的技术手段，且有利于延长开关和LED灯的使用寿命。 In view of the above-mentioned defects of the prior art, the purpose of this utility model is to provide a low-cost solution for intelligent memory of LED lamps without using complex technical means, and it is beneficial to prolong the service life of switches and LED lamps.

本实用新型的基本思想是，在电源开关的两端并联一电阻，在开关断开的情况下，通过该电阻可为LED灯控制器提供“记忆”所需要的微弱电流(约数十微安)。具备“记忆”所需的能量之后，再考虑解决逻辑操作层面的问题。比如，开关断电后，如果在5秒钟内再次来电，LED灯的亮度或者色温状态会改变，例如从50％亮度变成25％亮度，或者从冷光色温变成暖光色温。但如果在5秒钟之内，一直没有来电，LED灯的亮度或者色温状态将保持不变。 The basic idea of the utility model is that a resistor is connected in parallel at both ends of the power switch. When the switch is disconnected, the resistor can provide the weak current (about tens of microamperes) required for "memory" for the LED lamp controller. ). After having the energy required for "memory", consider solving problems at the logical operation level. For example, after the switch is powered off, if the power is turned on again within 5 seconds, the brightness or color temperature of the LED light will change, for example, from 50% brightness to 25% brightness, or from cold color temperature to warm light color temperature. But if there is no incoming call within 5 seconds, the brightness or color temperature of the LED light will remain unchanged.

根据本实用新型的第一方面，提供一种开关操作识别电路，在其电源端与参考地之间连接一电容器，交流电经一控制开关由整流桥整流后，对所述电容器充电，其特征在于，在所述控制开关的两端并联一电阻，所述开关操作识别电路包括：上电检测电路，与所述电源端相连，在所述控制开关闭合后，当所述电源端的电压(VCC)上升到第一参考电压时，产生第一输出信号；掉电检测电路，与所述电源端相连，在所述控制开关断开后，当所述电源端的电压(VCC)下降到第二参考电压，并经过一延迟时间后，产生第二输出信号；第一计时器，由所述第二输出信号启动计时，并在一预定时间到时产生第三输出信号；状态寄存器，其置位(SET)端口接收所述第一输出信号，保持(HOLD)端口接收所述第三输出信号；在所述第三输出信号有效期间，状态寄存器所输出的状态信息保持不变。 According to the first aspect of the utility model, there is provided a switch operation identification circuit, a capacitor is connected between its power supply terminal and the reference ground, and the alternating current is rectified by a rectifier bridge through a control switch, and then the capacitor is charged, which is characterized in that , a resistor is connected in parallel at both ends of the control switch, the switch operation identification circuit includes: a power-on detection circuit connected to the power supply terminal, after the control switch is closed, when the voltage (VCC) of the power supply terminal When it rises to the first reference voltage, the first output signal is generated; the power failure detection circuit is connected to the power supply terminal, and after the control switch is turned off, when the voltage (VCC) of the power supply terminal drops to the second reference voltage , and after a delay time, the second output signal is generated; the first timer starts timing by the second output signal, and generates the third output signal when a predetermined time expires; the status register, which is set (SET ) port for receiving the first output signal, and a hold (HOLD) port for receiving the third output signal; during the valid period of the third output signal, the state information output by the state register remains unchanged.

在第一方面中，优选的是，所述状态寄存器包括：或门，其一输入端与所述置位(SET)端口连接，另一输入端与所述保持(HOLD)端口连接；二进制计数器，其时钟(CK)端与所述或门的输出端连接。 In the first aspect, preferably, the status register includes: an OR gate, one input terminal of which is connected to the set (SET) port, and the other input terminal is connected to the hold (HOLD) port; a binary counter , the clock (CK) end of which is connected to the output end of the OR gate.

优选的是，所述状态寄存器包括：或门，其一输入端与所述置位(SET)端口连接，另一输入端与所述保持(HOLD)端口连接；三进制计数器，其时钟(CK)端与所述或门的输出端连接。 Preferably, the state register comprises: an OR gate, one input of which is connected to the set (SET) port, and the other input is connected to the hold (HOLD) port; a ternary counter, whose clock ( CK) end is connected with the output end of described OR gate.

优选的是，所述与控制开关相并联的电阻的阻值大于2兆欧姆。 Preferably, the resistance of the resistor connected in parallel with the control switch is greater than 2 megaohms.

优选的是，所述开关操作识别电路包括一连续关开机操作判断电路，所述连续关开机操作判断电路接收所述第一输出信号，并在一计时期间出现两次关开机操作的情况下，产生一复位信号至所述状态寄存器的复位(RST)端口。 Preferably, the switch operation recognition circuit includes a continuous power-off operation judging circuit, the continuous power-off operation judging circuit receives the first output signal, and when two power-off operations occur during a timing period, Generate a reset signal to the reset (RST) port of the status register.

优选的是，所述连续关开机操作判断电路包括异步二进制计数器和第二计时器，所述异步二进制计数器的时钟(CK)端接收所述第一 输出信号，并在第二计时器计时期间检测到两次有效第一输出信号的情况下，所述异步二进制计数器产生所述复位信号。 Preferably, the continuous power-off and power-on operation judging circuit includes an asynchronous binary counter and a second timer, and the clock (CK) terminal of the asynchronous binary counter receives the first output signal, and detects during the timing of the second timer When the first output signal is valid twice, the asynchronous binary counter generates the reset signal.

根据第二方面，提供一种开关调光电路，其特征在于，所述开关调光电路包括：如上述第一方面所述的开关操作识别电路；以及恒流功率转换电路，用以驱动恒流源负载，并基于所述开关操作识别电路中状态寄存器输出的状态信息，调整所述恒流源负载的亮度。 According to the second aspect, there is provided a switch dimming circuit, which is characterized in that the switch dimming circuit includes: the switch operation recognition circuit as described in the first aspect above; and a constant current power conversion circuit for driving a constant current source load, and adjust the brightness of the constant current source load based on the status information output by the status register in the switch operation identification circuit.

第二方面中，优选的是，所述开关操作识别电路、恒流功率转换电路集成在一个芯片上。 In the second aspect, preferably, the switch operation identification circuit and the constant current power conversion circuit are integrated on one chip.

根据第三方面，提供一种开关调色电路，其特征在于，所述开关调色电路包括：如上述第一方面所述的开关操作识别电路；恒流功率转换电路，用以驱动恒流源负载；以及色温译码控制电路，接收所述开关操作识别电路中状态寄存器输出的状态信息，并将所述状态信息译码为色温控制信息，以调整所述恒流源负载的色温。 According to the third aspect, there is provided a switch toning circuit, characterized in that the switch toning circuit includes: the switch operation identification circuit as described in the first aspect above; a constant current power conversion circuit for driving a constant current source a load; and a color temperature decoding control circuit, receiving the state information output by the state register in the switch operation recognition circuit, and decoding the state information into color temperature control information, so as to adjust the color temperature of the constant current source load.

第三方面中，优选的是，所述开关操作识别电路、恒流功率转换电路、以及色温译码控制电路集成在一个芯片上。 In the third aspect, preferably, the switch operation identification circuit, the constant current power conversion circuit, and the color temperature decoding control circuit are integrated on one chip.

根据第四方面，提供一种照明灯具，其特征在于，包括上述第二、三方面所述的电路以及LED负载。 According to a fourth aspect, there is provided a lighting fixture, which is characterized by comprising the circuit described in the second and third aspects above and an LED load.

基于本实用新型的开关操作识别电路，以最低的成本实现了有记忆功能的LED开关调光调色技术，无需遥控器，无需污染环境的电池，无需复杂的技术手段。并且，本实用新型提供了更人性化的操作，既满足人们差异化的需求，又简化了操作。本实用新型在正常使用时，无需频繁地操作开关，使得开关和LED灯的寿命更长。 Based on the switch operation identification circuit of the utility model, the LED switch dimming and color adjustment technology with memory function is realized at the lowest cost, without remote control, environment-polluting battery and complicated technical means. Moreover, the utility model provides a more humanized operation, which not only satisfies the differentiated needs of people, but also simplifies the operation. When the utility model is in normal use, the switch does not need to be frequently operated, so that the life span of the switch and the LED lamp is longer.

附图说明 Description of drawings

为更好地理解本实用新型，下文以实施例结合附图对本实用新型作进一步说明。附图中： In order to better understand the utility model, the utility model will be further described below with reference to the accompanying drawings. In the attached picture:

图1为本实用新型开关操作识别电路的结构示意图； Fig. 1 is the structural representation of the utility model switch operation identification circuit;

图2为本实用新型一实施例的状态寄存器； Fig. 2 is the state register of an embodiment of the utility model;

图3为两段开关调光调色真值表； Figure 3 is a truth table for two-stage switch dimming and color adjustment;

图4为三段开关调光调色真值表； Figure 4 is a truth table for three-stage switch dimming and color adjustment;

图5示出了单开关控制多灯的应用场景； Figure 5 shows an application scenario where a single switch controls multiple lights;

图6为具有复位功能的开关操作识别电路的结构示意图； 6 is a schematic structural diagram of a switch operation identification circuit with a reset function;

图7示出了连续关开机操作判断电路的示例结构； Fig. 7 shows the example structure of continuous power-off and power-on operation judging circuit;

图8示出了上电和掉电检测电路的示例结构； Figure 8 shows an example structure of a power-up and power-down detection circuit;

图9示出了上电和掉电检测电路的工作波形； Figure 9 shows the working waveforms of the power-up and power-down detection circuit;

图10为本实用新型开关调光电路的结构示意图； Fig. 10 is a structural schematic diagram of the switch dimming circuit of the present invention;

图11示出了有记忆功能开关调光电路的工作波形； Figure 11 shows the working waveform of the switch dimming circuit with memory function;

图12为本实用新型开关调色电路的结构示意图； Fig. 12 is a structural schematic diagram of the switch toning circuit of the present invention;

图13示出了色温译码控制电路的示例结构； Figure 13 shows an example structure of a color temperature decoding control circuit;

图14示出了有记忆功能开关调色电路的工作波形； Fig. 14 has shown the operating waveform of memory function switch toning circuit;

图15示出了开关调光调色复位技术的工作波形。 Fig. 15 shows the working waveform of the switch dimming and color adjustment reset technology.

具体实施方式 Detailed ways

参照图1，图1为本实用新型开关操作识别电路的结构示意图。该电路对控制开关101的操作进行判断、识别，并根据识别结果对其已有的状态信息做出改变，比如状态翻转，状态清零等。如图1所示，在开关操作识别电路320的电源端VCC与参考地之间，连接有电容104。由全球照明电网提供的110V或220V交流电通过控制开关101，经整流桥102整流后，再通过电阻103对电容104充电。电容104上的电压VCC为开关操作识别电路320提供工作所需的电源。按照本实用新型，在控制开关101的两端并联一电阻300，为“记忆”功能提供能量。由于本实用新型的开关调光调色技术不使用遥控器、电池，也不使用工艺复杂成本高的闪存技术，所以长时间的“记忆”就需要源源不断得到外界的能量，以保持信息不丢失。 Referring to Fig. 1, Fig. 1 is a structural schematic diagram of the switch operation identification circuit of the present invention. The circuit judges and recognizes the operation of the control switch 101, and changes its existing state information according to the recognition result, such as state reversal, state clearing, etc. As shown in FIG. 1 , a capacitor 104 is connected between the power supply terminal VCC of the switch operation identification circuit 320 and the reference ground. The 110V or 220V AC provided by the global lighting grid passes through the control switch 101 , is rectified by the rectifier bridge 102 , and then charges the capacitor 104 through the resistor 103 . The voltage VCC on the capacitor 104 provides the power required for the switch operation recognition circuit 320 to work. According to the utility model, a resistor 300 is connected in parallel at both ends of the control switch 101 to provide energy for the "memory" function. Since the switching, dimming and toning technology of the utility model does not use remote controllers, batteries, or flash memory technology with complex processes and high costs, long-term "memory" requires continuous external energy to keep information from being lost .

电阻300并联在开关101的两端，在开关101断开的情况下，为开关操作识别电路320提供用于“记忆”的微弱电流(约数十微安)。交流电经过整流桥102整流后，只要保证电容104上的电压高于开关操作识别电路320工作的最低电压(通常在1.2V以上)，开关操作识别电路320里存的状态信息就不会丢失。由于开关操作识别电路320所消耗的电流远低于100uA，因此，只需要从电阻300得到很小的电流或者能量，就可以实现开关调光调色技术的记忆功能。优选地，电阻300的阻值选择大于2兆欧姆，这样，在关灯后系统消耗的功率不到20mW，完全可以忽略。从成本上看，一颗2兆欧姆电阻的批量价格不会超过2分人民币，所增加的成本是微不足道的。 The resistor 300 is connected in parallel to both ends of the switch 101, and provides a weak current (about tens of microamperes) for the switch operation identification circuit 320 for "memory" when the switch 101 is turned off. After the alternating current is rectified by the rectifier bridge 102, as long as the voltage on the capacitor 104 is higher than the minimum working voltage (usually above 1.2V) of the switch operation identification circuit 320, the state information stored in the switch operation identification circuit 320 will not be lost. Since the current consumed by the switch operation recognition circuit 320 is much lower than 100 uA, only a small current or energy is needed from the resistor 300 to realize the memory function of the switch dimming and color adjustment technology. Preferably, the resistance value of the resistor 300 is selected to be larger than 2 MΩ, so that the power consumed by the system after turning off the light is less than 20 mW, which can be completely ignored. From the cost point of view, the bulk price of a 2 mega-ohm resistor will not exceed 2 yuan, and the increased cost is negligible.

顺便提及，电阻300需要安装在墙壁上的开关里，会增加一些工作量。但是，一般LED灯具(比如LED吸顶灯和LED筒灯)的安装工序都比较复杂，相比较而言，安装电阻300所增加工作量占的比重很小(小于5％左右)。考虑到开关调光调色技术“记忆”功能带来的人性化和低成本，所增加的这点工作量应易于被终端使用者接受。 By the way, the resistor 300 needs to be installed in the switch on the wall, which will add some work. However, the installation procedures of general LED lamps (such as LED ceiling lamps and LED downlights) are relatively complicated. In comparison, the increased workload of installing the resistor 300 accounts for a very small proportion (less than about 5%). Considering the humanization and low cost brought by the "memory" function of switch dimming and color matching technology, this increased workload should be easily accepted by end users.

如图1所示，开关操作识别电路320包括上电检测电路121、掉电检测电路122、计时器123、状态寄存器324。其中，上电检测电路121、掉电检测电路122均与电源端VCC相连接。在控制开关101闭合(上电)之后，当电压VCC上升到一参考电压时，上电检测电路121产生一输出信号，送至状态寄存器324的置位(SET)端口。在开关101断开(掉电)之后，当电压VCC下降到一参考电压，并经过一延迟时间(例如100毫秒)后，掉电检测电路122产生一输出信号，用以启动计时器123开始计时。在一预定时间(例如5秒)到时，计时器123产生一输出信号，送至状态寄存器324的保持(HOLD)端口。这意味着，如果开关操作识别电路320识别到开关101断开后5秒内一直没有闭合，将输出HOLD信号到状态寄存器324，使得状态寄存器324的信息在下一次开关101闭合(也就是来电)时保持不变，由此实现“记忆”功能。 As shown in FIG. 1 , the switch operation identification circuit 320 includes a power-on detection circuit 121 , a power-down detection circuit 122 , a timer 123 , and a status register 324 . Wherein, the power-on detection circuit 121 and the power-down detection circuit 122 are both connected to the power supply terminal VCC. After the control switch 101 is closed (power-on), when the voltage VCC rises to a reference voltage, the power-on detection circuit 121 generates an output signal, which is sent to the set (SET) port of the status register 324 . After the switch 101 is turned off (power down), when the voltage VCC drops to a reference voltage and after a delay time (for example, 100 milliseconds), the power down detection circuit 122 generates an output signal for starting the timer 123 to start counting . When a predetermined time (for example, 5 seconds) expires, the timer 123 generates an output signal, which is sent to the hold (HOLD) port of the status register 324 . This means that if the switch operation recognition circuit 320 recognizes that the switch 101 is disconnected and has not been closed within 5 seconds, it will output the HOLD signal to the status register 324, so that the information of the status register 324 will be displayed when the switch 101 is closed (that is, an incoming call) next time. remain unchanged, thereby realizing the "memory" function.

图2为本实用新型一实施例的状态寄存器324。如图2所示，状态寄存器324为二进制状态寄存器，它由或门801与二进制计数器构成。其中，或门801的一输入端与上述置位(SET)端口连接，另一输入端与上述保持(HOLD)端口连接；或门801的输出端连接至二进制计数器的时钟(CK)端。 FIG. 2 is a status register 324 of an embodiment of the present invention. As shown in FIG. 2 , the status register 324 is a binary status register, which is composed of an OR gate 801 and a binary counter. Wherein, one input end of the OR gate 801 is connected to the above-mentioned set (SET) port, and the other input end is connected to the above-mentioned hold (HOLD) port; the output end of the OR gate 801 is connected to the clock (CK) end of the binary counter.

这里，状态寄存器只有两个状态，SROUT默认状态是0，另一状态为1。触发器802是脉冲下降沿D型触发器，每当时钟端口CK出现一次脉冲下降沿时，D触发器802都将输入端口D的数字信息(0或1)锁存并输出到输出端口Q。输出端口QB是端口Q的逻辑反。将输出端口QB接到输入端口D，就构成了最简单的二进制计数器。当输入端口R是高电平1时，D触发器802将会无条件强制复位，复位意味着输出端口Q＝0。所以，在正常锁存情况时，输入端口R必须接到零电位。来自计时器123的HOLD信号若为高电平1(HOLD＝1)，将导致或门801的输出也为高电平，这意味着，HOLD为1可以屏蔽掉SET端的下降沿脉冲信号，使得D触发器802的输出状态保持不变。也就是说，在 HOLD＝1期间，D触发器802的输出端口Q为1就一直等于1，Q为0就一直等于0，由此实现了记忆功能。当然，具有两个状态的状态寄存器，对于调光功能而言，相应有全亮和部分亮(比如50％亮度)两种亮度选择；对于调色温而言，相应有冷色温和暖色温两种选择。参照图3，图3为两段开关调光调色真值表。 Here, the status register has only two states, the default state of SROUT is 0, and the other state is 1. The flip-flop 802 is a pulse falling edge D-type flip-flop. Whenever the clock port CK has a pulse falling edge, the D flip-flop 802 will latch the digital information (0 or 1) of the input port D and output it to the output port Q. Output port QB is the logical inverse of port Q. Connecting the output port QB to the input port D constitutes the simplest binary counter. When the input port R is at high level 1, the D flip-flop 802 will be forced to reset unconditionally, which means that the output port Q=0. Therefore, in the case of normal latching, the input port R must be connected to zero potential. If the HOLD signal from timer 123 is high level 1 (HOLD=1), the output of OR gate 801 will also be high level, which means that HOLD can shield the falling edge pulse signal of the SET end as 1, so that The output state of D flip-flop 802 remains unchanged. That is to say, during the period of HOLD=1, the output port Q of the D flip-flop 802 is always equal to 1 when it is 1, and it is always equal to 0 when Q is 0, thereby realizing the memory function. Of course, for the status register with two states, for the dimming function, there are correspondingly two brightness options of full brightness and partial brightness (such as 50% brightness); for the color temperature, there are correspondingly two kinds of cool color temperature and warm color temperature choose. Referring to FIG. 3 , FIG. 3 is a truth table for two-stage switch dimming and color adjustment.

类似地，状态寄存器324也可采用三进制状态寄存器。这种情形下，只需用D触发器构成一个三进制计数器即可，或门的输出端仍与其时钟(CK)端相连接。或门的两个输入端与端口SET、HOLD之间的连接关系不变。端口RST的连接亦不变。利用三进制状态寄存器的输出信息，可实现三段开关调光或者调色温。参照图4，图4为三段开关调光调色真值表。 Similarly, the status register 324 can also be a ternary status register. In this case, it is only necessary to use D flip-flops to form a ternary counter, and the output terminal of the OR gate is still connected to its clock (CK) terminal. The connection relationship between the two input terminals of the OR gate and the ports SET and HOLD remains unchanged. The connection of port RST is also unchanged. Using the output information of the ternary state register, it can realize three-stage switch dimming or color temperature adjustment. Referring to FIG. 4 , FIG. 4 is a truth table for three-stage switch dimming and color adjustment.

进一步地，在应用中会出现单开关控制多灯的情况，如图5所示。灯601到灯60N是单个独立的LED灯具。每个灯具都包含独立的LED光源、独立的驱动LED光源的电源电路，以及独立的开关操作识别电路。单开关带多个LED灯具容易出现记忆同步问题。所谓记忆同步问题，是指多个LED灯具可能出现亮度不同或者色温不同的情况。这是因为，每个LED灯具的开关操作识别电路320不可能完全一样，比如计时器之间的误差可高达+/-30％以上。发生不同步主要有两种情形，一是在用户操作开关101关和开比较快时，有的灯识别到100毫秒掉电操作而改变了亮度或者色温，但有的灯没有识别到100毫秒掉电操作从而亮度或者色温就保持不变；还有一种不同步的情况，出现在用户操作开关101关和开比较慢时，比如用户关灯后，等了5秒左右再开灯，这时候就可能有的灯计时器123计时未满而改变了亮度或者色温，而有的灯计时器123计时已满而保持原来的亮度或者色温不变。这就提出了多灯复位同步的要求。 Further, in the application, a single switch may control multiple lamps, as shown in Fig. 5 . Lamps 601 to 60N are single independent LED lamps. Each lamp includes an independent LED light source, an independent power supply circuit for driving the LED light source, and an independent switch operation identification circuit. A single switch with multiple LED lamps is prone to memory synchronization problems. The so-called memory synchronization problem refers to the situation that multiple LED lamps may have different brightness or different color temperature. This is because the switch operation identification circuit 320 of each LED lamp cannot be exactly the same, for example, the error between the timers can be as high as +/-30%. There are two main situations where asynchrony occurs. One is that when the user operates the switch 101 to turn off and on quickly, some lights recognize the 100 millisecond power-off operation and change the brightness or color temperature, but some lights do not recognize the 100 millisecond power-off operation. Electric operation keeps the brightness or color temperature unchanged; there is also an asynchronous situation, which occurs when the user operates the switch 101 to turn off and on slowly, for example, after the user turns off the light, he waits for about 5 seconds before turning on the light. Some lamp timers 123 may change the brightness or color temperature when the timing is not full, while some lamp timers 123 are full and keep the original brightness or color temperature unchanged. This puts forward the requirement of multi-lamp reset synchronization.

为此优选地，在开关操作识别电路中增设一连续关开机操作判断电路，如图6所示。连续关开机操作判断电路725接收上电检测电路121的输出信号，并在一预定时间(如1秒)内识别到连续两次(或者以上)关开机操作的情况下，产生一复位信号至状态寄存器724的复位(RST)端口，对状态寄存器724强制复位。这样，只要通过操作开关101就能实现复位功能。 For this reason, preferably, a continuous power-off and power-on operation judging circuit is added to the switch operation recognition circuit, as shown in FIG. 6 . The continuous power-off operation judging circuit 725 receives the output signal of the power-on detection circuit 121, and when it recognizes two consecutive (or more) power-off operations within a predetermined time (such as 1 second), it generates a reset signal to the state The reset (RST) port of the register 724 forces a reset of the status register 724 . In this way, the reset function can be realized only by operating the switch 101 .

图7示出了连续关开机操作判断电路的示例结构。该电路的功能 在于，判断例如1秒内是否出现两次关开机操作(关、开、关、开)，如果是的话，就输出高电平去强制复位状态寄存器724。图7中，902、903均为普通的D触发器(同图2)。上述置位(SET)端口与触发器902的时钟(CK)端连接，触发器902的Q输出端连接到触发器903的时钟(CK)端，触发器902与触发器903实际上构成了一个异步二进制计数器。如果在计时器901计时期间(比如1秒内)，该异步二进制计数器检测到两次SET下降沿脉冲，它就会输出高电平RST复位信号。 FIG. 7 shows an example structure of a continuous power-off and power-on operation judging circuit. The function of this circuit is to judge whether there are two power-off and power-on operations (off, on, off, on) within 1 second, and if so, output a high level to forcibly reset the status register 724. In Fig. 7, 902 and 903 are common D flip-flops (same as Fig. 2). The above-mentioned set (SET) port is connected to the clock (CK) end of the flip-flop 902, and the Q output end of the flip-flop 902 is connected to the clock (CK) end of the flip-flop 903, and the flip-flop 902 and the flip-flop 903 actually constitute a Asynchronous binary counter. If the asynchronous binary counter detects two SET falling edge pulses during the timing of the timer 901 (for example, within 1 second), it will output a high-level RST reset signal.

图8示出了上电和掉电检测电路的示例结构。图8中，上半部分是上电检测电路，下半部分是掉电检测电路。比较器326的正输入端连接一参考电压VREF1，上电后当VCC电压上升到VREF1的高度后，SET就产生一个下降沿信号，该信号直接送到状态寄存器的置位(SET)端口。比较器327的正输入端连接一参考电压VREF2，掉电后当VCC电压下降到VREF2以下，并经延迟器328延迟例如100毫秒后，产生一高电平的ENA信号，ENA信号送去启动计时器123工作，同时，ENA信号送至上电检测电路以复位RS触发器329。上电时，ENA信号将先变为低电平，允许上电检测电路的结果输出。其中，延迟器328的作用是滤波，滤除掉那些可能导致状态寄存器意外更新的各种噪声，一般滤波时间都在100毫秒以上。参照图9，图9示出了上电和掉电检测电路的工作波形。 FIG. 8 shows an example structure of a power-up and power-down detection circuit. In Fig. 8, the upper part is the power-on detection circuit, and the lower part is the power-down detection circuit. The positive input terminal of the comparator 326 is connected to a reference voltage VREF1. After power-on, when the VCC voltage rises to the level of VREF1, SET generates a falling edge signal, which is directly sent to the set (SET) port of the status register. The positive input terminal of the comparator 327 is connected to a reference voltage VREF2. After power failure, when the VCC voltage drops below VREF2 and is delayed by the delayer 328, for example, 100 milliseconds, a high-level ENA signal is generated, and the ENA signal is sent to start timing The device 123 works, and at the same time, the ENA signal is sent to the power-on detection circuit to reset the RS flip-flop 329 . When the power is turned on, the ENA signal will change to a low level first, allowing the output of the result of the power-on detection circuit. Among them, the function of the delayer 328 is to filter out various noises that may cause unexpected updating of the status register, and generally the filtering time is more than 100 milliseconds. Referring to FIG. 9, FIG. 9 shows the working waveforms of the power-up and power-down detection circuit.

图10为本实用新型开关调光电路的结构示意图。如图10所示，该开关调光电路中，应用了本实用新型的开关操作识别电路320。恒流功率转换电路105用于驱动LED负载110，它接收开关操作识别电路320中状态寄存器324所输出的状态信息，并根据该状态信息改变输出电流的大小，来调整LED负载110的亮度，实现有记忆功能的开关调光。 FIG. 10 is a schematic structural diagram of the switch dimming circuit of the present invention. As shown in FIG. 10 , the switch operation identification circuit 320 of the present invention is applied to the switch dimming circuit. The constant current power conversion circuit 105 is used to drive the LED load 110, it receives the state information output by the state register 324 in the switch operation recognition circuit 320, and changes the magnitude of the output current according to the state information to adjust the brightness of the LED load 110, realizing Switch dimming with memory function.

图11示出了有记忆功能开关调光电路的工作波形。该波形图基于图2所示二进制状态寄存器作出。从图11中可以看出：1)第一次开灯后，状态寄存器的输出信号SROUT＝0，对应灯的亮度是全亮；2)关灯后，例如在5秒内再次开灯，开关操作识别电路320识别到用户想改变灯亮度的意图，其内部SET信号产生一个下降沿，使得状态寄存器324的输出信号SROUT＝1，所对应灯的亮度是半亮；3)第二次 关灯后过5秒以上时间再次开灯，由于超过5秒时间，开关操作识别电路320产生一内部HOLD信号，该信号将新的SET下降沿信号屏蔽掉，使得状态寄存器324的状态保持不变，也就是维持灯亮度与关灯前一样半亮。 Figure 11 shows the working waveform of the switch dimming circuit with memory function. The waveform diagram is based on the binary status register shown in Figure 2. It can be seen from Figure 11 that: 1) After turning on the light for the first time, the output signal SROUT of the status register=0, and the brightness of the corresponding light is fully bright; 2) After turning off the light, for example, turn on the light again within 5 seconds, switch The operation recognition circuit 320 recognizes the intention of the user to change the brightness of the lamp, and its internal SET signal generates a falling edge, so that the output signal SROUT of the status register 324=1, and the brightness of the corresponding lamp is half bright; 3) turn off the lamp for the second time Turn on the light again after more than 5 seconds, because more than 5 seconds, the switch operation recognition circuit 320 generates an internal HOLD signal, which shields the new SET falling edge signal, so that the state of the status register 324 remains unchanged, and It is to maintain the brightness of the light as half bright as before turning off the light.

图12为本实用新型开关调色电路的结构示意图。如图12所示，该开关调色电路中，同样应用了本实用新型的开关操作识别电路320。这里，负载分成两部分，一半是冷光LED负载110，另一半是暖光LED负载111。若接通NMOS开关206、关闭NMOS开关207，就只有负载110亮，输出冷光。若接通开关207、关闭开关206，则只有负载111亮，输出暖光。若同时接通开关204、205，则负载110、111均接通，输出的就是中性光。驱动负载110、111的恒流功率转换电路105只负责输出稳定不变的电流。色温译码控制电路208接收开关操作识别电路中状态寄存器324输出的状态信息，并将该状态信息译码成能改变灯色温的控制信息，最终完成有记忆功能的开关调色。 Fig. 12 is a structural schematic diagram of the switching toning circuit of the present invention. As shown in FIG. 12 , the switch operation identification circuit 320 of the present invention is also applied in the switch color adjustment circuit. Here, the load is divided into two parts, one half is the cold LED load 110 and the other half is the warm LED load 111 . If the NMOS switch 206 is turned on and the NMOS switch 207 is turned off, only the load 110 is on and outputs cold light. If the switch 207 is turned on and the switch 206 is turned off, only the load 111 is on, and warm light is output. If the switches 204 and 205 are turned on at the same time, the loads 110 and 111 are both turned on, and the output is neutral light. The constant current power conversion circuit 105 driving the loads 110 and 111 is only responsible for outputting a stable current. The color temperature decoding control circuit 208 receives the state information output by the state register 324 in the switch operation identification circuit, and decodes the state information into control information capable of changing the color temperature of the lamp, and finally completes the switch color adjustment with memory function.

参照图13，图13给出了色温译码控制电路208的示例结构。这是简单的两段色温译码电路，与图2所示二进制状态寄存器相对应。图13中，有两个逻辑反相器209和210，CH2与输入SROUT同相，CH1与输入SROUT反相。当SROUT＝0时，CH1所对应的LED负载110为亮，而CH2所对应的LED负载111为灭。 Referring to FIG. 13 , FIG. 13 shows an example structure of the color temperature decoding control circuit 208 . This is a simple two-stage color temperature decoding circuit, which corresponds to the binary state register shown in Figure 2. In Fig. 13, there are two logic inverters 209 and 210, CH2 is in phase with input SROUT, and CH1 is in phase with input SROUT. When SROUT=0, the LED load 110 corresponding to CH1 is on, and the LED load 111 corresponding to CH2 is off.

有记忆功能开关调色电路的工作波形如图14所示。该波形图基于图2所示二进制状态寄存器、图13所示色温译码控制电路作出。从图14中，可以看出：1)第一次开灯后，状态寄存器324的输出信号SROUT＝0，对应灯的色温是暖色光；2)关灯后，在5秒内再次开灯，开关操作识别电路320识别到用户想改变灯色温的意图，其内部SET信号产生一个下降沿，使得状态寄存器324的输出信号SROUT＝1，对应灯的色温是冷色光；3)第二次关灯后，过5秒以上时间再次开灯，由于超过5秒时间，开关操作识别电路320产生一内部HOLD信号，该信号将新的SET下降沿信号屏蔽掉，使得状态寄存器324的状态保持不变，即维持灯的色温与关灯前一样为冷色光。 The working waveform of the switching circuit with memory function is shown in Figure 14. The waveform diagram is made based on the binary state register shown in FIG. 2 and the color temperature decoding control circuit shown in FIG. 13 . From Fig. 14, it can be seen that: 1) after turning on the light for the first time, the output signal SROUT of the state register 324=0, and the color temperature of the corresponding light is a warm color light; 2) after turning off the light, turn on the light again within 5 seconds, The switch operation recognition circuit 320 recognizes that the user wants to change the color temperature of the lamp, and its internal SET signal generates a falling edge, so that the output signal SROUT of the status register 324=1, and the color temperature of the corresponding lamp is cool color light; 3) turn off the lamp for the second time Afterwards, turn on the light again after more than 5 seconds, because the switch operation recognition circuit 320 generates an internal HOLD signal over 5 seconds, which shields the new SET falling edge signal, so that the state of the status register 324 remains unchanged. That is to maintain the color temperature of the lamp as the cool color light before turning off the lamp.

图15示出了开关调光调色复位技术的工作波形。该波形图基于图6所示开关操作识别电路、图7所示连续关开机操作判断电路作出。图15中，信号RSTIN、Q1均为上述连续关开机操作判断电路的内部信 号。从该图中，可以看出：1)在关机后例如1秒内，如果未出现再次开机关机操作，连续关开机操作判断电路725则不会输出强制复位信号RST；2)在关机后例如1秒内，如果出现再次开机关机操作，连续关开机操作判断电路725将输出复位信号RST，去强制复位状态寄存器724。 Fig. 15 shows the working waveform of the switch dimming and color adjustment reset technology. The waveform diagram is based on the switch operation identification circuit shown in FIG. 6 and the continuous power-off operation judgment circuit shown in FIG. 7 . In Fig. 15, the signals RSTIN and Q1 are internal signals of the above-mentioned continuous power-off and power-on operation judging circuit. From this figure, it can be seen that: 1) within 1 second after shutdown, if there is no restart operation, the continuous shutdown operation judging circuit 725 will not output the forced reset signal RST; 2) after shutdown, for example 1 Within seconds, if there is another power-on and power-off operation, the continuous power-on and power-off operation judging circuit 725 will output a reset signal RST to forcibly reset the status register 724 .

需要提及的是，根据以上内容，本领域技术人员明了，本实用新型可由非常基础的CMOS半导体工艺实施，因此，能够容易地实现集成，以进一步降低成本。比如，在开关调光应用中，可将开关操作识别电路320与恒流功率转换电路105集成在一起。在开关调色应用中，可将开关操作识别电路320、恒流功率转换电路105、色温译码控制电路208、以及两个NMOS开关206和207集成在一起。所集成的越多，成本就下降得越多。如采用可擦写工艺来实现记忆，根本无法做到如此低成本的集成。 It should be mentioned that, based on the above content, those skilled in the art understand that the present invention can be implemented by a very basic CMOS semiconductor process, so integration can be easily realized to further reduce the cost. For example, in a switch dimming application, the switch operation recognition circuit 320 can be integrated with the constant current power conversion circuit 105 . In the switch toning application, the switch operation identification circuit 320 , the constant current power conversion circuit 105 , the color temperature decoding control circuit 208 , and the two NMOS switches 206 and 207 can be integrated together. The more that is integrated, the more the cost drops. Such low-cost integration cannot be achieved if a rewritable process is used to realize memory.

某些特殊情况下，最终用户也可能不需要记忆功能，这时仅需选择不安装电阻300即可。记忆与否的选择权在最终用户手上，这也是本实用新型的一个优势。 In some special cases, the end user may not need the memory function, and in this case, it is only necessary to choose not to install the resistor 300. The choice of memorizing or not is in the hands of the end user, which is also an advantage of the utility model.

本实用新型并不局限于以LED作为负载，而是可用于任何一种恒流源负载。这对于本领域技术人员而言是易于理解的。 The utility model is not limited to using LED as a load, but can be used for any kind of constant current source load. This is easily understood by those skilled in the art.

显而易见，在此描述的本实用新型可以有许多变化，这种变化不能认为偏离本实用新型的精神和范围。因此，所有对本领域技术人员显而易见的改变，都包括在所附权利要求书的涵盖范围之内。 Obviously, the invention described herein may have many changes, and such changes should not be regarded as departing from the spirit and scope of the invention. Accordingly, all changes obvious to those skilled in the art are intended to be covered by the appended claims.