CN102779403B - Ultrasonic heat meter with plug-and-play M-BUS interface - Google Patents

The invention discloses an ultrasonic heat meter with a plug-and-play M-BUS interface. The ultrasonic heat meter comprises a calculator unit which comprises a microcontroller, an M-BUS communication module and a power supply module providing a power supply to the microcontroller. The microcontroller is connected with the M-BUS communication module and is connected with an upper computer through the M-BUS communication module, data are transmitted between the microcontroller and the upper computer, and an automatic reporting heat meter numbering module is arranged in the microcontroller. The ultrasonic heat meter can support the automatic networking function of the upper computer like a collector to an M-BUS, can be recognized and automatically used once being connected with the M-BUS, achieves the function of 'plug and play' similar to a mobile hard disk drive in a computer system and enables remote transmission connection operation to be simple and practicable.

A kind of ultrasonic calorimeter with M-BUS bus interface of plug and play

Technical field

The present invention relates to a kind of calorimeter, particularly a kind of ultrasonic calorimeter with M-BUS bus interface of plug and play.

Background technology

Calorimeter refers to for measurement and shows the instrument of current through heat exchanger system institute releasing heat energy, regulation according to latest national standards " city-building industry standard CJ128-2007---heat energy meter " and " measurement verification regulations JJG225-2001---heat energy meter ", calorimeter is divided into monoblock type (integral type) calorimeter and combined hot scale, monoblock type (integral type) calorimeter refers to by flow sensor, the all or part of nondecomposable overall thermal scale that the parts such as counter and pairing temperature sensor form, the combined hot scale refers to by flow sensor, the calorimeter that the component combination such as counter and pairing temperature sensor forms, wherein flow sensor refers to and is arranged in heat-exchange system for gathering the parts of the concurrent outflow signal of discharge, temperature sensor refers to and is arranged in heat-exchange system for the temperature that gathers water the parts that send temperature signal, pairing temperature sensor refers on same calorimeter, is used for respectively measuring the consistent or close temperature sensor of a pair of meter characteristic of the entrance and exit temperature of heat-exchange system, counter refers to the signal received from flow sensor and pairing temperature sensor, carries out the parts of the calorie value that heat Calculation, storage and display system exchange.The principle of work of calorimeter is: the temperature sensor of pairing is arranged on respectively on the pipeline of entrance and exit of heat exchange loop, flow sensor is arranged on entrance or outlet conduit, flow sensor sends flow signal, the pairing sensor sends the temperature signal of entrance and exit, counter gathers flow signal and temperature signal, through calculating, demonstrate the calorie value that thermal liquid discharges to outlet from entrance.At present, difference according to flow sensor and measuring flow principle of work, calorimeter is divided into again three kinds: the electromagnetic type calorimeter, mechanical heat meter and ultrasonic type calorimeter, electromagnetic type calorimeter wherein, according to Faraday's law, can produce induction electromotive force when the current with electric conductivity during by electromagnetic field, the speed of current is higher, the induction electromotive force produced is just larger, just can draw the water velocity in pipeline by the size of measuring induction electromotive force, and then just can determine the discharge in pipeline by density and the caliber of water, the shortcoming of electromagnetic type calorimeter is, it not only has higher requirements to the conductance of current, and the variation of water temperature also can cause that the conductance of current changes, the conductance variation of current affects again the measuring accuracy to flow rate of water flow, in addition, electromagnetic type flow meter power consumption is large, the Alternating Current Power Supply that needs 220V, and to the electromagnetic interference (EMI) sensitivity of environment, mechanical heat meter, can promote vane rotary while utilizing current to flow through the impeller of flowmeter, the speed of current is larger, the rotating speed of impeller is just higher, just can draw the speed of current by the rotating speed of measuring impeller, the shortcoming of mechanical heat meter is, because it has rotatable parts, is the impeller of flowmeter, increase the resistance of water, its serviceable life and measuring accuracy are relatively low, the ultrasonic type calorimeter, different these principles of velocity of propagation of utilizing ultrasound wave to flow and flow against the current downstream in pipeline, carry out the speed of current in measuring channel, the speed of current is higher, the velocity of propagation that ultrasound wave flows downstream and flows against the current in pipeline differs just larger, in identical length, measuring channel flows and flows against the current hyperacoustic propagation time difference downstream, just can draw the water velocity in pipeline, because of ultrasonic type calorimeter no-rotary part, long service life, measuring accuracy is high, therefore is used widely.

Calorimeter is mainly used in the concentrated supply of heating in the city metering, and Every household has an ammeter to be convenient to implementation, and household metering, by the heat charge.Automatic meter reading integrates computer technology, the communication technology, electricity consumption and measurement technology, utilize microelectronics, computer networking technology, and the technology such as collection, sensing, communication, automatically read with processing list and count, by the city dweller with the concentrated in addition automatic management of the consumption meterings such as heat, electricity consumption, water, there is the speed of copying and accepting piece, computational accuracy is high, the simultaneity of checking meter is good, and can be directly and the advantage such as management centre computer networking, become development trend from now on.At present, calorimeter arranges network communication interface mostly, with the host computer such as collector, carries out data transmission, forms long-distance meter-reading system, realizes remote automatic meter reading.For a long-distance meter-reading system, anti-external disturbance requirement to data transmission bus is very high, want to resist the coupled interference of various capacitives, perception, all from equipment and all should mutually isolating between equipment and main equipment, require again networking cost relatively low simultaneously, transmission line need not be used shielded cable, should have that installation wiring is flexible, with low cost, the characteristics of automatic control, the M-BUS bus meets above requirement, it adopts general twisted-pair power cable, the various topological structures such as IB type, star, annular, thus on-the-spot complicated installation environment adapted to.In China, application along with building automatic and household long-range reading technique, M-BUS is as a kind of low cost, simple and reliable, open communication bus, the regulation that meets European standard EN1434.3 and China " metering instrumented data transmission technology condition C J/T188-2004 for family " fully, thoroughly solved the drawback of manual metering, really reached that data are true, monitoring in time, regulation and control accurately, also progressively obtained the extensive support of measuring instrument manufacturer and progressively be promoted use.At present, when carrying out the networking of calorimeter access M-BUS bus, need to input again the networking of calorimeter numbering information such as (claiming again calorimeter address or calorimeter ID) ability at collector or host computer, very inconvenient to the networking debugging, especially when increasing or change calorimeter, access calorimeter after need in the list of host computer mailing address, re-starting setting again, need many people to operate debugging simultaneously, cost of labor is high.

Summary of the invention

The present invention provides a kind of ultrasonic calorimeter that can reduce the M-BUS bus interface with plug and play of cost of labor for solving the technical matters existed in known technology.

The technical scheme that the present invention takes for the technical matters existed in the solution known technology is: a kind of ultrasonic calorimeter with M-BUS bus interface of plug and play, comprise unit calculator, described unit calculator comprises microcontroller, M-BUS bus communication module and the power module of supplying with the microcontroller power supply, described microcontroller is connected with described M-BUS bus communication module, and with host computer, be connected and mutual data transmission by described M-BUS bus communication module, arrange in described microcontroller and automatically report calorimeter numbering module.

The present invention can also adopt following technical scheme:

The described calorimeter numbering module that automatically reports comprises:

Whether detecting M-BUS bus duty submodule is idle for detecting M-BUS bus duty;

Send calorimeter numbering request submodule, for sending calorimeter numbering registration request;

Whether the detecting host computer reads calorimeter numbering instruction submodule, for detecting host computer, send and read the instruction of calorimeter numbering;

Send calorimeter numbering submodule, number to host computer for sending calorimeter; And

The detecting host computer is confirmed calorimeter numbering instruction submodule, for detecting host computer, whether sends the instruction of confirmation calorimeter numbering;

Wherein, whether detecting M-BUS bus duty submodule detecting M-BUS bus duty is idle;

If detecting M-BUS bus duty submodule detects M-BUS bus duty for idle, send the work of calorimeter numbering request submodule, to host computer evolution of heat table numbering registration request; Otherwise detecting M-BUS bus duty submodule repeats detecting;

After sending calorimeter numbering request submodule evolution of heat table numbering registration request, whether the detecting host computer reads the work of calorimeter numbering instruction submodule, with the detecting host computer, calorimeter is sent and reads the instruction of calorimeter numbering;

If the detecting host computer reads calorimeter numbering instruction submodule and detects host computer calorimeter is sent and reads the instruction of calorimeter numbering, send the work of calorimeter numbering submodule, send the calorimeter numbering to host computer; Otherwise detecting M-BUS bus duty submodule repeats detecting;

After transmission calorimeter numbering submodule sends the calorimeter numbering to host computer, detect the work of host computer confirmation calorimeter numbering instruction submodule, whether to calorimeter evolution of heat table, number the confirmation instruction with the detecting host computer;

If the detecting host computer confirms that calorimeter numbering instruction submodule detects host computer calorimeter evolution of heat table numbering is confirmed to instruction, complete the calorimeter numbering and report; Otherwise drive detecting M-BUS bus duty submodule to repeat detecting.

Described microcontroller is ARM9 microcontroller or MSP430 microcontroller.

Described M-BUS bus communication module comprises the TSS721 transceiver.

Described unit calculator also comprises the display module that shows calorimeter numbering and continuous data, and described display module is connected with described microcontroller.

Described display module comprises LCD display.

Advantage and good effect that the present invention has are: by the unit calculator at calorimeter, microcontroller and M-BUS bus communication module are set, and build calorimeter by programming instruction number automatic reporting module in microcontroller, realized that calorimeter numbers automatic reporting functions, when calorimeter access M-BUS bus system and online with the host computer such as collector after, calorimeter can report calorimeter numbering (table number/ID address) and other data automatically.The present invention supports the automatic network-building function of the host computers such as collector to the M-BUS bus, calorimeter access M-BUS bus can be identified, automatically come into operation, realized being similar to " plug and play " function of portable hard drive in computer system, the operation that teletransmission is connected becomes simple.

The accompanying drawing explanation

Fig. 1 is that collector and calorimeter pass through the structured flowchart of M-BUS bus networking;

Fig. 2 is calorimeter microcontroller and M-BUS bus communication module connecting circuit sketch;

Fig. 3 reports calorimeter numbering module to form and workflow diagram automatically.

Embodiment

For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 1～Fig. 3, a kind of ultrasonic calorimeter with M-BUS bus interface of plug and play, comprise unit calculator, described unit calculator comprises microcontroller, M-BUS bus communication module and the power module of supplying with the microcontroller power supply, described microcontroller is connected with described M-BUS bus communication module, and with host computer, be connected and mutual data transmission by described MBUS bus communication module, arrange in described microcontroller and automatically report calorimeter numbering module.

The described calorimeter numbering module that automatically reports can comprise:

Whether detecting M-BUS bus duty submodule is idle for detecting M-BUS bus duty;

Send calorimeter numbering request submodule, for sending calorimeter numbering registration request;

Whether the detecting host computer reads calorimeter numbering instruction submodule, for detecting host computer, send and read the instruction of calorimeter numbering;

Send calorimeter numbering submodule, number to host computer for sending calorimeter; And

The detecting host computer is confirmed calorimeter numbering instruction submodule, for detecting host computer, whether sends the instruction of confirmation calorimeter numbering;

Wherein, whether detecting M-BUS bus duty submodule detecting M-BUS bus duty is idle;

If detecting M-BUS bus duty submodule detects M-BUS bus duty for idle, send the work of calorimeter numbering request submodule, to host computer evolution of heat table numbering registration request; Otherwise detecting M-BUS bus duty submodule repeats detecting;

After sending calorimeter numbering request submodule evolution of heat table numbering registration request, whether the detecting host computer reads the work of calorimeter numbering instruction submodule, with the detecting host computer, calorimeter is sent and reads the instruction of calorimeter numbering;

If the detecting host computer reads calorimeter numbering instruction submodule and detects host computer calorimeter is sent and reads the instruction of calorimeter numbering, send the work of calorimeter numbering submodule, send the calorimeter numbering to host computer; Otherwise detecting M-BUS bus duty submodule repeats detecting;

After transmission calorimeter numbering submodule sends the calorimeter numbering to host computer, detect the work of host computer confirmation calorimeter numbering instruction submodule, whether to calorimeter evolution of heat table, number the confirmation instruction with the detecting host computer;

If the detecting host computer confirms that calorimeter numbering instruction submodule detects host computer calorimeter evolution of heat table numbering is confirmed to instruction, complete the calorimeter numbering and report; Otherwise drive detecting M-BUS bus duty submodule to repeat detecting.

In the above-described embodiment, described microcontroller can be ARM9 microcontroller or MSP430 microcontroller, and described M-BUS bus communication module can comprise the TSS721 transceiver.

And described unit calculator also can comprise the display module that shows calorimeter numbering and continuous data, described display module is connected with described microcontroller, and described display module can comprise LCD display.

Principle of work of the present invention:

Set up the telecommunication circuit of M-BUS bus on the mainboard of calorimeter, construct and automatically report calorimeter to number to the module of the host computers such as collector by instruction programming in the unit calculator of calorimeter simultaneously, when calorimeter access M-BUS bus system and online with the host computer such as collector after, automatically report calorimeter numbering module to start, calorimeter will report table number address and other data automatically, realized " plug and play " function, when newly establishing or set up the calorimeter access while having completed the M-BUS bus system of networking, can realize automatically declaring the calorimeter numbering, the host computers such as the collector calorimeter numbering data that can upgrade in time.

Automatically report the workflow of calorimeter numbering module, refer to Fig. 3, comprise the steps:

(a) calorimeter access M-BUS bus, enter the M-BUS bus system;

(b) detecting M-BUS bus duty submodule work, whether start to detect M-BUS bus duty is idle, whether the M-BUS data communication is available free;

(c) if detect after M-BUS bus duty is the free time, send the work of calorimeter numbering request submodule, to the host computer evolution of heat tables such as collector numbering registration request; Otherwise return to execution step (b);

(d) after evolution of heat table numbering registration request, the detecting host computer reads the work of calorimeter numbering instruction submodule, and whether the host computers such as detecting collector send calorimeter and read the instruction of calorimeter numbering;

(e) if detecting host computer sends and read the instruction of calorimeter numbering calorimeter, send the work of calorimeter numbering submodule, send calorimeter and number to host computer; Otherwise return to execution step (b);

(f), after sending the calorimeter numbering to host computer, the detecting host computer is confirmed the work of calorimeter numbering instruction submodule, whether completes registration calorimeter numbering and sends to calorimeter with host computers such as detecting collectors and confirm the instruction of calorimeter numbering;

(g) if detecting host computer sends and confirm the instruction of calorimeter numbering calorimeter, flow process finishes; Otherwise return to execution step (b).