CN213240930U - Programmable module capable of setting power supply parameters - Google Patents

The utility model discloses a programmable module capable of setting power supply parameters, which comprises a current setting module and is electrically connected with an external power supply; the display module is electrically connected with the current setting module; the main control module is electrically connected with the current setting module; the metering module is electrically connected with the main control module and the external equipment respectively; the current setting module sets a target current value and sends the target current value to the main control module, the target current value is displayed through the display module, the metering module collects the current value of the output end of the metering module and feeds the current value back to the main control module, and the main control module can output a PWM signal and adjust the output PWM signal according to the fed-back current value so as to enable the current value output by the metering module to be equal to the target current value; the metering chip for collecting power is adopted to adjust the current, new hardware is not required to be introduced, and closed-loop control is realized by continuously collecting and then adjusting PWM.

Programmable module capable of setting power supply parameters

Technical Field

The utility model relates to a constant current power supply field, in particular to module able to programme that can set up power parameter.

Background

The current constant current power supply carries out output current setting through a dial switch, the current setting is actually carried out through a hardware mode, different constant current chips need to be configured through resistors with different resistance values, a series of resistors need to be newly formulated for setting current by using different constant current chips, the current can be adjusted only according to a preset gear, and if the originally set gear does not cover the current requirement of the peripheral, the resistance value of a product needs to be adjusted again; the size of the dial switch is larger, the current allowed to flow through the general dial switch is smaller, and the cost is higher in order to select the proper dial switch; the resistance value corresponding to each gear can be specified after a large amount of data is measured, and the used constant current chip generally has a certain error, so that the final product may have a larger deviation on the same resistance value of the same gear, and the error is large to a certain extent, and the size of the resistor may need to be manually adjusted to influence the production speed; the current setting mode can only be realized on a certain fixed current value, and the setting of any current cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a can set up power parameter's module able to programme.

The utility model discloses a technical scheme that its technical problem was solved to an embodiment adopted is: a programmable module capable of setting power supply parameters, comprising:

the current setting module is electrically connected with an external power supply;

the display module is electrically connected with the current setting module;

the main control module is electrically connected with the current setting module;

the metering module is electrically connected with the main control module and the external equipment respectively;

the current setting module sets a target current value and sends the target current value to the main control module, the target current value is displayed through the display module, the metering module collects the current value of the output end of the metering module and feeds the current value back to the main control module, and the main control module can output PWM signals and adjust the output PWM signals according to the current value fed back so that the current value output by the metering module is equal to the target current value.

Further, the current setting module includes a first main control chip U5 and a plurality of key modules electrically connected to the first main control chip.

Further, the key module includes a capacitor C40, a resistor R41, a resistor R38 and a key SW1, one end of the capacitor C40 is grounded, the other end of the capacitor C40 is electrically connected to one ends of the main control module and the resistor R41, the other end of the resistor R41 is electrically connected to one end of the resistor R38 and one end of the key SW1, the other end of the resistor R38 is electrically connected to an external power supply, and the other end of the key SW1 is grounded.

The utility model has the advantages that: a programmable module capable of setting power supply parameters comprises a current setting module, a current setting module and a power supply module, wherein the current setting module is electrically connected with an external power supply; the display module is electrically connected with the current setting module; the main control module is electrically connected with the current setting module; the metering module is electrically connected with the main control module and the external equipment respectively; the current setting module sets a target current value and sends the target current value to the main control module, the target current value is displayed through the display module, the metering module collects the current value of the output end of the metering module and feeds the current value back to the main control module, and the main control module can output a PWM signal and adjust the output PWM signal according to the fed-back current value so as to enable the current value output by the metering module to be equal to the target current value; the metering chip for collecting power is adopted to adjust the current, new hardware is not required to be introduced, and closed-loop control is realized by continuously collecting and then adjusting PWM.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a functional block diagram of a programmable module capable of setting power supply parameters;

FIG. 2 is a first partial circuit diagram of a current setting module;

FIG. 3 is a second partial circuit diagram of the current setting module;

FIG. 4 is a circuit diagram of a display module;

FIG. 5 is a circuit diagram of a master control module;

fig. 6 is a circuit diagram of a metering module.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 6, a programmable module capable of setting power supply parameters includes:

the current setting module is electrically connected with an external power supply;

the display module is electrically connected with the current setting module;

the main control module is electrically connected with the current setting module;

the metering module is electrically connected with the main control module and the external equipment respectively;

the current setting module sets a target current value and sends the target current value to the main control module, the target current value is displayed through the display module, the metering module collects the current value of the output end of the metering module and feeds the current value back to the main control module, and the main control module can output PWM signals and adjust the output PWM signals according to the current value fed back so that the current value output by the metering module is equal to the target current value.

The utility model adopts a self-defined communication protocol for communication without using a general singlechip communication interface, does not need to occupy specific hardware resources, and can realize data transmission by adopting a common IO port; the current adjustment is directly carried out by adopting a metering chip for acquiring power, new hardware is not required to be introduced, and closed-loop control is realized by continuously acquiring and then adjusting PWM (pulse width modulation); the dial switch does not need to be integrated on the circuit board, and only IO ports on two single-chip microcomputers need to be led out, so that the size of the circuit board can be effectively reduced, and the cost of the dial switch is saved; in the design, a large amount of data does not need to be measured to match with proper resistance, the error of the constant current chip can be basically ignored, the error is made up in a closed loop mode, and the set current can be adjusted randomly within the hardware operation range without being limited to a default set individual gear.

The communication mode of the current setting module and the main control module adopts a self-defined mode, a special hardware interface is invalid, only two IO ports are needed, one IO port serves as a clock signal, and the other IO port serves as a data transmission end; the data transmitting end is ready to transmit signals before the clock signal generates the rising edge, when the rising edge arrives, the receiving end can read the level on IO through the synchronous signal, the data of one byte can be received through 8 rising edge receiving ends, the process is repeated, the receiving end can acquire all the data transmitted by the transmitting end, in order to prevent interference in transmission, only check sum bits are added in a protocol layer, and inquiry is added after transmission is finished, only the inquired data is consistent with the transmitted data, the transmission is considered to be successful, and the current is adjusted.

After receiving the set target current, the single chip microcomputer on the power panel starts to adjust the output of the PWM, the adjusting process obtains the current value acquired by the metering chip, the current is large, the duty ratio of the PWM is reduced, the current is large, the duty ratio of the PWM is improved, in order to shorten the time of the whole calibration current, a duty ratio value is preset in each current section, and the target value can be slightly adjusted on the basis of the preset value to reach the target value.

Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.