CN104217567A - Water, electricity and gas multifunctional information collector - Google Patents

Water, electricity and gas multifunctional information collector Download PDF

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Publication number
CN104217567A
CN104217567A CN201410473456.XA CN201410473456A CN104217567A CN 104217567 A CN104217567 A CN 104217567A CN 201410473456 A CN201410473456 A CN 201410473456A CN 104217567 A CN104217567 A CN 104217567A
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water
electricity
gas
agreement
meter
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CN104217567B (en
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孙雷
孙庆苏
王伯襄
孙晓海
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Jiangsu Open University
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Jiangsu Open University
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Abstract

The invention discloses a water, electricity and gas multifunctional information collector. The water, electricity and gas multifunctional information collector comprises a main micro-control unit, wherein the main micro-control unit is connected with 485 communication circuits, a wireless data communication circuit, a data storage circuit, a clock circuit and a GPRS module respectively; the 485 communication circuits comprise an uplink 485 communication circuit and a downlink 485 communication circuit; two paths of downlink serial port inputs are composed of the downlink 485 communication circuit and the wireless data communication circuit and are used for collecting metered data of a water meter, an ammeter and a gas meter which have different protocols; and two paths of uplink serial port outputs are composed of the GPRS module and the uplink 485 communication circuit used for 485 field monitoring and cascading equipment.

Description

A kind of water, electricity and gas multifunctional information collector
Technical field
The present invention relates to a kind of information collecting device, particularly a kind of multifunctional information collector of the use amount for water, electricity and gas.
Background technology
Traditional user's measuring instrument (water meter, ammeter, gas meter) management is normally checked meter by each administrative authority dress table place of sending someone, and because user is wide, amount large, easily causes mistake.
Along with the continuous improvement of building, house condition, the intelligent requirements of people to living facilities improves day by day, and electric administrative department is for the managerial demand such as data statistics and charge simultaneously, also requires to change traditional meter reading method of manually visiting.Along with the development of modern electronic technology, the progress at full speed of mechanics of communication, computer networking technology, for the realization of Automatic meter reading system provides condition.Therefore, realize customer meter automatic data logging oneself be inexorable trend.
Summary of the invention
Goal of the invention: technical matters to be solved by this invention is for the deficiencies in the prior art, provides a kind of water, electricity and gas multifunctional information collector.
In order to solve the problems of the technologies described above, the invention discloses a kind of water, electricity and gas multifunctional information collector, comprise main micro-control unit, main micro-control unit connects 485 communicating circuits, wireless data communications circuit, data storage circuitry, clock circuit, GPRS module respectively.
In the present invention, 485 communicating circuits comprise up 485 communicating circuits and descending 485 communicating circuits; Descending 485 communicating circuits and wireless data communications circuit form the descending serial ports input of two-way, for gather the water meter of different agreement, ammeter, gas meter table count; GPRS module and form the up serial ports of two-way for up 485 communicating circuits of 485 field monitorings and cascade device and export.
In the present invention, described main micro-control unit adopts model STM32F205RE microprocessor.
In the present invention, described main micro-control unit connects a watchdog circuit, and watchdog circuit adopts model MAX706R chip.
In the present invention, data storage circuitry adopts model AT45DB041 storage chip and AT24LC64 storage chip.
In the present invention, described 485 communicating circuits adopt model HVD3082 interface chip.
In the present invention, wireless sample circuit adopts model C C1101 radio frequency chip.
In the present invention, LM2576 is adopted to produce main 4V power supply; SP6201 chip is adopted to power to MCU; IRF7726 chip is adopted to power to GPRS module; APL117 chip is adopted to power to 485 communicating circuits.
In the present invention, main micro-control unit connects infrared circuit.
In the present invention, water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement;
Or,
Water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement, and time up, water meter, the unification of gas meter agreement are DL/T645 agreement;
Or,
Water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement, arranges each port parameter of collector, in order to realize the intelligent conversion of agreement time descending.
The present invention is a kind of multifunctional water electric information collector, for in remote automatic meter reading system, comprise collection in worksite, gather water, electricity, the meter reading of the field instruments such as gas meter, and store, data feedback channel is by GPRS communication module, realize water, electricity, the data upload of gas meter is to main website, down going channel adopts RS485 and wireless module to be connected to water, electric table, wherein water meter, gas meter adopts Modbus agreement, ammeter adopts DL/T645 agreement, water meter time up, gas meter agreement is unified is DL/T645 agreement, according to the concrete distribution situation of on-the-spot water, electricity and gas time descending, the each port parameter of collector is set, in order to realize the intelligent conversion of agreement.
The present invention realizes the data acquisition of the table meters such as electric supply meter in remote automatic meter reading system, water meter, gas meter, and by GPRS module, information is uploaded to main, for automatic data logging provides data supporting.
Beneficial effect: the present invention compared with prior art, comprise the meter reading that the descending serial acquisition communication of two-way gathers the field instrument such as water, electricity, gas meter of different agreement, and store, wherein a road is that 485 telecommunication circuits gather, and another road is wireless data communications collection.Both can be gathered ammeter data by 485 communications, by wireless transport module, the water meter that scene dispersion is installed be gathered with the gas meter needing forceful electric power to isolate again; Adopt the up serial ports of two-way to export, a road for connecting GPRS wireless communication module, by GPRS communication module, realize water, electricity, gas meter data upload to main website, another road is used for 485 field monitorings and cascade device; Anti-jamming circuit is added at 485 communicating circuits and power circuit; Adopt watchdog circuit to improve stability, separately for the place of condition difference of checking meter, can directly check meter by the mode of hand-held palm PC by remote control, infrared communication have control simple, implement conveniently, flexible multi-purpose, very convenient.Present invention employs unified agreement, solve the interconnected and interoperability of water, electricity and gas metering aspect.
Multifunctional water electric information collector of the present invention has important value and application prospect widely, and design circuit structure is simple, good reliability.
Accompanying drawing explanation
To do the present invention below in conjunction with the drawings and specific embodiments and further illustrate, above-mentioned and/or otherwise advantage of the present invention will become apparent.
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the present invention forms schematic diagram.
Fig. 3 is power circuit of the present invention.
Fig. 4 is master singlechip circuit of the present invention.
Fig. 5 is GPRS module circuit diagram of the present invention.
Fig. 6 is the present invention 485 downlink communication module circuit diagram.
Fig. 7 is the present invention 485 upload communication module circuit diagram.
Fig. 8 is wireless communication module circuit diagram of the present invention.
Fig. 9 is memory circuit of the present invention.
Figure 10 is watchdog circuit of the present invention.
Figure 11 is the infrared circuit of the present invention.
Figure 12 is signal lamp road of the present invention.
Figure 13 is that the present invention's up water meter ammeter gas meter agreement unifies conversion process figure.
Figure 14 is that the present invention's descending water meter ammeter gas meter agreement unifies conversion process figure.
Embodiment
Embodiment
As shown in Figure 1, the present embodiment comprises main micro-control unit, and main micro-control unit connects 485 communicating circuits, wireless data communications circuit, data storage circuitry, clock circuit, GPRS module respectively.485 communicating circuits comprise up 485 communicating circuits and descending 485 communicating circuits; Descending 485 communicating circuits and wireless data communications circuit form the descending serial ports input of two-way, for gather the water meter of different agreement, ammeter, gas meter table count; GPRS module and form the up serial ports of two-way for up 485 communicating circuits of 485 field monitorings and cascade device and export.
As Fig. 2, information is passed to acquisition terminal by line of electric force or wireless channel by the present embodiment.Acquisition terminal is responsible for the data of the table such as ammeter, water meter, the gas meter meter in collection user family, and acquisition terminal distinguishes the information that table meter transmits, and information needed is delivered to concentrator by line of electric force or wireless channel.Concentrator again by information by GPRS transmission to main; Realize remote meter reading and the remote real time monitoring of the table meters such as water, electricity, gas.
As Fig. 3 ~ Figure 12, the present embodiment comprises power circuit, for Multifunctional collector system provides stabilized power source, wherein adopts LM2576 to produce the main 4V power supply of collector; SP6201 chip is adopted to power to MCU; IRF7726 chip is adopted to power to GPRS module; Adopt APL117 chip to power to 485 communicating circuits, 485 isolated from power export; Main micro-control unit adopts STM32F205RE microprocessor; 485 descending collection communication circuit adopt HVD3082 interface chip, and descending data acquisition circuit adopts CC1101 interface chip; Up 485 telecommunication circuits adopt HVD3082 interface chip; Storer comprises AT45DB041 chip, AT24LC64 chip; Watchdog circuit adopts MAX706R chip.
Water meter, gas meter adopt Modbus agreement, ammeter adopts DL/T645 agreement, and time up, water meter, the unification of gas meter agreement are DL/T645 agreement, according to the concrete distribution situation of on-the-spot water, electricity and gas time descending, the each port parameter of collector is set, in order to realize the intelligent conversion of agreement.
In the present embodiment, descending 485 adopt HVD3082 interface chip with up 485 collection communication circuit, and radio frequency chip selects the high performance chips CC1101 newly released, support GFSK and MSK modulation system, have the carrier frequency of 433/868 wave band such as grade, reliability is high, adopts SPI port communications.
In the present embodiment, microprocessor unit need realize configuration to HVD3082485 chip and CC1101 function register, the acceptance process of digital signal, expanding of system function factor, consider the factors such as the power consumption of HVD3082485 and CC1101, operating voltage, communication mode, adopt STM32F205RE microprocessor to be microprocessing unit.
1, power module
As Fig. 3, power circuit, wherein:
(1) Z1 is magnetic bead, and effect suppresses high frequency interference.
(2) RV1821 is voltage dependent resistor (VDR), and effect is overvoltage protection.
(3) RT0 is thermistor, and effect is overcurrent protection.
(4) T1, T2 are transformer
(5) D1, D2, D3, D4 form rectification circuit, E1, E2, C9, input filter; E3, C21, output filtering, VV1 is LM2576 switch voltage-stabilizing block, and it is that GPRS module is powered that output+4v ,+4v export+4V by VV4 and IRF7726 switch voltage-stabilizing block.Whether MCU is powered to GPRS by VV44 foot control VV4.
(6) U14, VV2, C18, E4, E5, C20 form 485 power circuits, and wherein U14, C18, E4 are input filter; VV2, E5, C20 mu balanced circuit, output filtering, supply voltage is+5V.
(7)+4V is by VV3 mu balanced circuit, exports 3.3V, for MCU power supply.
2, host scm module
As Fig. 4, be master singlechip circuit, wherein:
BAT is battery, and keep the continuity of clock during effect when having a power failure, XT1, XT2 are crystal oscillating circuits; 14,15 pins, UART TX4, UARTRX4 are infrared serial interface signal; 16,17 pins, TX2, RX2 are the up rs 232 serial interface signal of GPRS; 25 pins, WDI WDT; 29 pins, OFF4V is by VV4 control GPRS power supply; 43,42 pins, RX1, TX1 are 485 downgoing signals; 41 pins, Ir38K infrared control signal; 38,37 pin TX4, RX4 are up 485 signals; 36,35 pin TX5, RX5 are wireless communication signals, and 20,21,22,23 pins connect CC1101 circuit.
3, GPRS module
If Fig. 5 is GPRS module circuit diagram
JP3 is master control GPRS gang socket, wherein:
1. 1,2 pins are GND ground signalling
2. 3,4 pins are GPRS4V power supply signal
3. 5,6 pin TX2,7,8 pin RX2 are the serial communication of master control borad and GPRS plate
4. 9,10 pins are GPRS switching signal
4,485 descending and upload modules
If Fig. 6 and Fig. 7 is descending and upstream circuitry figure.
(1) downstream circuitry figure, as shown in Figure 6:
1. for waiting for receive status when MCU is flat.TX1 is high level, and STX1 is high level, and U4 (HVD3082) is receive status.
2. when MCU sends signal, TX1 is low level, the conducting of optocoupler U8 luminotron, the conducting of U8 phototriode, STX1 is low level, simultaneously because STX1 is low level, cause Q2 conducting, RE/DE1 is high level, makes U4 be that data send state, now the TX1 of MCU is sent on 485 communication lines by triode STX1, U4, completes the transmission of data.
3. when 485 have signal to input, because be in receive status when U4 is flat, when 485 buses have signal to input, be low level by U4, SRX1, the power valve conducting of optocoupler U7, the phototriode conducting of U7, RX1 is low level, and RX1 is reflected to MCU, and MCU completes acceptance.
(2) upload (up) circuit diagram, as shown in Figure 7:
1. for waiting for receive status when MCU is flat.TX4 is high level, and STX1 is high level, and U6 (HVD3082) is receive status.
2. when MCU sends signal, TX4 is low level, the conducting of U8 luminotron, the conducting of U8 phototriode, STX1 is low level, simultaneously because STX1 is low level, cause Q2 conducting, RE/DE1 is high level, makes U6 be that data send state, now the TX1 of MCU is sent on 485 communication lines by triode STX1, U6, completes the transmission of data.
3. when 485 have signal to input, because be in receive status when U6 is flat, when 485 buses have signal to input, be low level by U6, SRX1, the power valve conducting of U9, the phototriode conducting of U9, RX4 is low level, and RX4 is reflected to MCU, and MCU completes acceptance.
5, wireless communication module
If Fig. 8 is wireless communication module
(1) as shown in Figure 8, C12, C15, C17, C19 are filter capacitor, C17 capacitance is high, and C19 capacitance is low, compensates the filtering characteristic of different frequency ranges, the compensation that wherein capacitance is low is high, the compensation that capacitance is high is low, and C1 is capacitance, and C3, C13 and L3 form a π type band and lead to, J4 and J5 is test point, and X1 is crystal oscillator.
(2) CC1101 and STM32F205RE Microprocessor Interface
As shown in Figure 8, MCU STM32F205RE microprocessor and CC1101 are by SPI interface communication, 20 pin-23 pin of single-chip microcomputer STM32F205RE be connected respectively to CC1101 U17,20,2,1 pin, communicated with CC1101 by SPI port, that is: STM32F205RE20 pin PA4 (nCS) meets the 7 pin csn (Low level effective) of CC1101; STM32F205RE23 pin SI connects the 20 pin SI mouths (data input) of CC1101; STM32F205RE22 pin SO connects 2 pin SO (data output) mouth of CC1101; STM32F205RE21 pin SCK connects 1 pin SCK (clock) mouth of CC1101.
6, memory circuit
If Fig. 9 is memory circuit, wherein:
(1) E6, C12, C13 are filtering circuit
(2) R40, R41R45 are signal pull-up resistor
(3) the filtering circuit of C9, C10, C11 and R39, R38, R37 composition high frequency interference
(4) storer U13 is by WP, SCL, SDA and MCU communication; SCL is serial clock; SDA is serial data and/or addresses; some data transmission all occur when SCL signal is high level; WP is write-protect, and when WP is high level, storer is write-protected; when WP is low level, write operation can be carried out to storer.
7, watchdog circuit
If Figure 10 is watchdog circuit, wherein:
(1) in order to improve the reliability of system cloud gray model, system watchdog circuit.Watchdog circuit provides independently protection system to microcontroller, and system " feeds dog " with some cycles, and when system malfunctions, " feeding dog " time-out, generation RESET signal resets to system by watchdog circuit, prevents system in case of system halt.
(2) adopt MAX706R chip, pin is 1-MR, 2-VCC, 3-GND, 4-PFI, 5-PFO, 6-WDI, 7-RESET, 8-WDO; Wherein MR is manual reset, PFI represent power supply drop voltage monitoring input, PFO represent power supply drop signal export, WDI represents that house dog inputs, and WDO represents that house dog exports, and RESET represents that reset signal exports.
(3) MAX706R chip is for monitoring the activity of MCU, if WDI does not receive the trigger pip from MCU in 1.6s, and WDI is in non-high-impedance state, then WD0 exports step-down, as long as reset effectively, then WatchDog Timer function is prohibited, once reset signal cancels and WDI detects high level saltus step, timer starts the timing of 1.6s.Namely the saltus step of WDI end can reset timer and start once new time-count cycle.
8, infrared circuit module
Figure 11 is infrared circuit, wherein:
(1), for the place of condition difference of checking meter, can directly check meter by the mode of hand-held palm PC by remote control, infrared communication have control simple, implement convenient, flexible multi-purpose, very convenient.
(2) infrared emission: MCU sends TX signal by UART_TX4, when UART_TX4 is low level, triode Q1 possesses turn-on condition, when triode Q6 conducting, and infraluminescence pipe HL1 conducting, send infrared light, the ground level of Ir38K square-wave signal control Q6, when Ir38K is high, Q6 conducting, when Ir38K is low, Q6 ends.When Ir38K is with the square wave control Q6 break-make of 38KHZ, the signal of the UART_TX4 of MCU is launched with 38KHZ frequency by infrared transmitting tube HL1.
(3) infrared receiver: conducting when infrared receiving tube V2 receives infrared signal, cause UART_RX4 step-down, infrared acknowledge(ment) signal passes to MCU by UART_RX4.
9, signal lamp module
Figure 12 tally circuit, wherein:
(1) the descending 485 signal of communication lamps of L ED2, red bright for launching, yellow bright for accepting.
(2) LED1 is GPRS signal of communication lamp, red bright for launching, yellow bright for accepting.
(3) LED3 is up 485 signal of communication lamps, red bright for launching, yellow bright for accepting.
(4) LED4 is wireless communication signals lamp, red bright for launching, yellow bright for accepting.
(5) LED5 is Infrared communications signals lamp, red bright for launching, yellow bright for accepting.
(6) LED8 is error light
(7) LED9 represents that GPRS is online
(8) LED7 indication equipment runs
10, the up modular converter of uniform protocol
In Figure 13 process flow diagram
(1) read the Frame received from each port of collector, first by Data classification.
(2), according to the integrality of the type approval Frame of frame, comprise the format specification etc. of Frame.
(3) the information of resolution data frame.
(4) Frame being mapped as corresponding data frame format, is namely 645 unified agreements the Modbus protocol conversion of water meter and gas meter.
11, uniform protocol down conversion module
In Figure 14 process flow diagram:
(1), according to field condition, judge each port of collector and water, electricity, gas list catenation situation.
(2) connect the parameter of water, electricity, gas list catenation situation to collector according to each port to arrange.
(3), after optimum configurations success, during collector downgoing communication, the parameter according to arranging converts communications protocol to corresponding water, electricity, gas agreement.
The invention provides a kind of water, electricity and gas multifunctional information collector; the method and access of this technical scheme of specific implementation is a lot; the above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.The all available prior art of each ingredient not clear and definite in the present embodiment is realized.

Claims (10)

1. a water, electricity and gas multifunctional information collector, is characterized in that, comprises main micro-control unit, and main micro-control unit connects 485 communicating circuits, wireless data communications circuit, data storage circuitry, clock circuit, GPRS module respectively.
2. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, 485 communicating circuits comprise up 485 communicating circuits and descending 485 communicating circuits; Descending 485 communicating circuits and wireless data communications circuit form the descending serial ports input of two-way, for gather the water meter of different agreement, ammeter, gas meter table count; GPRS module and form the up serial ports of two-way for up 485 communicating circuits of 485 field monitorings and cascade device and export.
3. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, described main micro-control unit adopts model STM32F205RE microprocessor.
4. a kind of water, electricity and gas multifunctional information collector according to claim 1, it is characterized in that, described main micro-control unit connects a watchdog circuit, and watchdog circuit adopts model MAX706R chip.
5. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, data storage circuitry adopts model AT45DB041 storage chip and AT24LC64 storage chip.
6. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, described 485 communicating circuits adopt model HVD3082 interface chip.
7. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, wireless sample circuit adopts model C C1101 radio frequency chip.
8. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, adopts LM2576 to produce main 4V power supply; SP6201 chip is adopted to power to MCU; IRF7726 chip is adopted to power to GPRS module; APL117 chip is adopted to power to 485 communicating circuits.
9. a kind of water, electricity and gas multifunctional information collector according to claim 1, it is characterized in that, main micro-control unit connects infrared circuit.
10. a kind of water, electricity and gas multifunctional information collector according to claim 1, is characterized in that, water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement;
Or,
Water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement, and time up, water meter, the unification of gas meter agreement are DL/T645 agreement;
Or,
Water meter, gas meter adopt Modbus agreement, and ammeter adopts DL/T645 agreement, arranges each port parameter of collector, in order to realize the intelligent conversion of agreement time descending.
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CN105679008A (en) * 2016-03-28 2016-06-15 国网山东省电力公司济宁供电公司 Method and device for multi-meter acquisition simulation on basis of real-time monitoring
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