CN107909786B - M-BUS input micropower wireless output parallel connection converter - Google Patents

M-BUS input micropower wireless output parallel connection converter Download PDF

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CN107909786B
CN107909786B CN201710454311.9A CN201710454311A CN107909786B CN 107909786 B CN107909786 B CN 107909786B CN 201710454311 A CN201710454311 A CN 201710454311A CN 107909786 B CN107909786 B CN 107909786B
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capacitor
grounded
resistor
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CN107909786A (en
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徐俊
朱林
陈瑜
沈晓斌
倪志泉
董寒宇
李寅
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State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems

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Abstract

The invention relates to an M-BUS input micropower wireless output doubling converter which comprises a central processing module, an M-BUS receiving module, an M-BUS sending module, a micropower wireless processing module and a power supply module, wherein the M-BUS receiving module, the M-BUS sending module and the micropower wireless processing module are respectively connected with the central processing module. The parallel converter has the characteristics of stable data transmission, strong anti-interference capability, low cost, small size and the like, greatly reduces the occurrence probability of missed reading and false exceeding, and improves the reading accuracy and reliability of a metering instrument.

Description

M-BUS输入微功率无线输出并线转换器M-BUS input micro power wireless output parallel converter

技术领域technical field

本发明涉及一种通讯转换器,尤其涉及一种M-BUS输入微功率无线输出并线转换器。The invention relates to a communication converter, in particular to an M-BUS input micro-power wireless output parallel converter.

背景技术Background technique

目前,水务企业对用户水表数据的抄读采用现场集中抄表方式,抄表人员通过连接水务企业抄表机和居民单元楼的M-BUS总线接口,实现水表的抄读。电力企业对用户电表数据的抄读采用远程自动抄表方式,将通过M-BUS通讯的水表、气表、热表通过微功率无线协议转换器转换为DL/T645-2007通用规约数据后,再将数据传送至采集RS485电表的通用采集器后,上送给主站。由于M-BUS总线是一种专门为消耗量计量仪表数据传输设计的主从式半双工传输总线,在任何时候的传输方向是单向的,从主设备到从设备或从从设备到主设备,因此,当水务企业与电力企业同时进行抄表时,会产生相互干扰,导致无法进行抄读。At present, the water enterprise reads the user's water meter data by on-site centralized meter reading, and the meter reading personnel realize the reading of the water meter by connecting the meter reading machine of the water enterprise and the M-BUS bus interface of the residential unit building. The electric power enterprise adopts the remote automatic meter reading method to read the user's electricity meter data. After the data is sent to the general collector that collects the RS485 meter, it is sent to the master station. Since the M-BUS bus is a master-slave half-duplex transmission bus specially designed for data transmission of consumption metering instruments, the transmission direction at any time is unidirectional, from the master device to the slave device or from the slave device to the master. Therefore, when the water company and the power company conduct meter reading at the same time, there will be mutual interference, resulting in the inability to read.

发明内容SUMMARY OF THE INVENTION

本发明主要解决现有水务企业和电力企业无法同时抄读M-BUS通讯的水表和电表的技术问题;提供一种M-BUS输入微功率无线输出并线转换器,其能够把M-BUS采集数据转换成ZIGBEE无线数据进行传送,即从M-BUS读取的数据,可以通过Zigbee进行无线数据传送,传送给上层主站进行数据处理,从而实现水电和电表的同时抄读。本发明的并线转换器具有数据传输稳定、抗干扰能力强、成本低、体型小巧等特点,大大降低了漏抄、误超的发生几率,提高计量仪表抄读的正确性和可靠性。The invention mainly solves the technical problem that the existing water affairs enterprises and electric power enterprises cannot read the water meter and the electric meter of M-BUS communication at the same time; provides an M-BUS input micro-power wireless output parallel converter, which can collect the M-BUS The data is converted into ZIGBEE wireless data for transmission, that is, the data read from the M-BUS can be wirelessly transmitted through Zigbee and transmitted to the upper master station for data processing, so as to realize the simultaneous reading of water, electricity and electricity meters. The parallel converter of the invention has the characteristics of stable data transmission, strong anti-interference ability, low cost, small size and the like, greatly reduces the occurrence probability of missed copying and false overrun, and improves the correctness and reliability of metering reading.

本发明的上述技术问题主要是通过下述技术方案得以解决的:本发明包括中央处理模块、M-BUS接收模块、M-BUS发送模块、微功率无线处理模块和为整个并线转换器提供工作电压的电源模块,M-BUS接收模块、M-BUS发送模块及微功率无线处理模块分别和所述的中央处理模块相连。本发明通过设置M-BUS接收模块和微功率无线处理模块,能够把M-BUS采集数据转换成ZIGBEE无线数据进行传送,即从M-BUS读取的数据,可以通过Zigbee进行无线数据传送,传送给上层主站进行数据处理,从而实现水电和电表的同时抄读。The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions: the present invention includes a central processing module, an M-BUS receiving module, an M-BUS transmitting module, a micro-power wireless processing module, and provides work for the entire parallel converter. The voltage power supply module, the M-BUS receiving module, the M-BUS sending module and the micro-power wireless processing module are respectively connected with the central processing module. By setting the M-BUS receiving module and the micro-power wireless processing module, the present invention can convert the M-BUS collected data into ZIGBEE wireless data for transmission, that is, the data read from the M-BUS can be wirelessly transmitted through Zigbee. Perform data processing for the upper master station, so as to realize the simultaneous reading of water and electricity meters.

作为优选,所述的M-BUS接收模块包括场效应管Q7~场效应管Q11和差动比较器U3,差动比较器U3采用TL331差动比较器;场效应管Q9、场效应管Q10及场效应管Q11的栅极经电阻R25和所述的中央处理模块的TXD-EN/DIS脚相连,场效应管Q9的漏极经电阻R20和差动比较器U3的3脚相连,差动比较器U3的3脚经电容C10接地,电阻R20上并联有二极管D6,且二极管D6的负极和场效应管Q9的漏极相连,二极管D6的正极和差动比较器U3的3脚相连,场效应管Q9的源极和二极管D7及二极管D8的正极相连,二极管D7及二极管D8的负极均和差动比较器U3的1脚相连,差动比较器U3的1脚经电阻R22接地,差动比较器U3的2脚接地,场效应管Q9的源极和场效应管Q10的漏极相连,场效应管Q10的漏极既和二极管D9及二极管D10的负极相连又和二极管D11的正极相连,二极管D9及二极管D10的正极和场效应管Q10的源极相连,场效应管Q10的源极和M-BUS总线中的M-BUS-端相连,二极管D11的负极和二极管D6的负极相连,差动比较器U3的5脚既接+5V电压又经电容C7接地,差动比较器U3的4脚,一路经电阻R21和发光二极管D5的负极相连,发光二极管D5的正极接+5V电压,另一路和场效应管Q8的栅极相连,场效应管Q8的源极接地,场效应管Q8的漏极既经电阻R18接+3V电压又和场效应管Q7的栅极相连,场效应管Q7的源极和场效应管Q11的漏极相连,场效应管Q11的源极接地,场效应管Q7的漏极既和所述的中央处理模块的RXD EN/DIS脚相连又经电阻R19和电容C8的并联电路和+3V电压相连。数据传输稳定,成本较低。Preferably, the M-BUS receiving module includes field effect transistors Q7 to field effect transistors Q11 and a differential comparator U3, and the differential comparator U3 adopts a TL331 differential comparator; The gate of the field effect transistor Q11 is connected to the TXD-EN/DIS pin of the central processing module via the resistor R25, and the drain of the field effect transistor Q9 is connected to the 3 pin of the differential comparator U3 via the resistor R20. The 3 pin of the device U3 is grounded through the capacitor C10, the diode D6 is connected in parallel with the resistor R20, and the negative electrode of the diode D6 is connected to the drain of the field effect transistor Q9, and the positive electrode of the diode D6 is connected to the 3 pin of the differential comparator U3. The source of the tube Q9 is connected to the anode of the diode D7 and the diode D8, and the cathode of the diode D7 and the diode D8 are connected to the 1 pin of the differential comparator U3. The 1 pin of the differential comparator U3 is grounded through the resistor R22, and the differential comparison The 2 pin of the device U3 is grounded, the source of the FET Q9 is connected to the drain of the FET Q10, the drain of the FET Q10 is not only connected to the cathode of the diode D9 and the diode D10, but also connected to the anode of the diode D11. The anodes of D9 and diode D10 are connected to the source of FET Q10, the source of FET Q10 is connected to the M-BUS- terminal in the M-BUS bus, the cathode of diode D11 is connected to the cathode of diode D6, and the differential The 5th pin of the comparator U3 is connected to the +5V voltage and grounded through the capacitor C7. The 4th pin of the differential comparator U3 is connected to the negative pole of the light-emitting diode D5 through the resistor R21, and the positive pole of the light-emitting diode D5 is connected to the +5V voltage, and the other way It is connected to the gate of the field effect transistor Q8, the source of the field effect transistor Q8 is grounded, and the drain of the field effect transistor Q8 is connected to the +3V voltage through the resistor R18 and is also connected to the gate of the field effect transistor Q7. The source is connected to the drain of the field effect transistor Q11, the source of the field effect transistor Q11 is grounded, and the drain of the field effect transistor Q7 is not only connected to the RXD EN/DIS pin of the central processing module, but also to the resistor R19 and the capacitor C8. The parallel circuit is connected to +3V voltage. The data transmission is stable and the cost is low.

作为优选,所述的M-BUS输入微功率无线输出并线转换器包括短路保护电路,短路保护电路包括三极管Q1、场效应管Q2~场效应管Q4和差动比较器U1,差动比较器U1采用TL331差动比较器;M-BUS总线中的M-BUS+端经电阻R3和电阻R8的串联电路接地,M-BUS总线中的M-BUS-端既和电阻R3与电阻R8的连接点相连又和差动比较器U1的1脚相连,差动比较器U1的2脚接地,差动比较器U1的3脚既经电阻R9接地又经电阻R1接+5V电压,差动比较器U1的5脚接+5V电压,差动比较器U1的4脚既经电阻R5接+5V电压又和场效应管Q2的栅极相连,场效应管Q2的源极接+5V电压,场效应管Q2的漏极经电阻R12和电容C4的并联电路接地,场效应管Q2的漏极和场效应管Q4的栅极相连,场效应管Q4的源极接地,场效应管Q4的漏极既经电阻R6接+5V电压又经电阻R7和场效应管Q3的栅极相连,场效应管Q3的源极接地,场效应管Q3的漏极经电阻R4和三极管Q1的基极相连,三极管Q1的集电极经电阻R10和发光二极管D3的正极相连,发光二极管D3的负极接地,三极管Q1的集电极又和M-BUS总线中的M-BUS+端相连,三极管Q1的发射极和基极之间连接有电阻R2,三极管Q1的发射极和中央处理模块的Vmark/space脚相连。具有短路保护功能,提高安全性和稳定性。Preferably, the M-BUS input micro-power wireless output parallel converter includes a short-circuit protection circuit, and the short-circuit protection circuit includes a transistor Q1, a field effect transistor Q2 to a field effect transistor Q4 and a differential comparator U1, the differential comparator U1 adopts TL331 differential comparator; the M-BUS+ terminal in the M-BUS bus is grounded through the series circuit of resistor R3 and resistor R8, and the M-BUS- terminal in the M-BUS bus is connected to the connection point of resistor R3 and resistor R8 Connected and connected to the 1 pin of the differential comparator U1, the 2 pin of the differential comparator U1 is grounded, the 3 pin of the differential comparator U1 is both grounded through the resistor R9 and connected to the +5V voltage through the resistor R1, the differential comparator U1 The 5 pin of the differential comparator U1 is connected to the +5V voltage, and the 4 pin of the differential comparator U1 is connected to the +5V voltage through the resistor R5 and is connected to the gate of the field effect transistor Q2. The source of the field effect transistor Q2 is connected to the +5V voltage. The drain of Q2 is grounded through the parallel circuit of resistor R12 and capacitor C4, the drain of field effect transistor Q2 is connected to the gate of field effect transistor Q4, the source of field effect transistor Q4 is grounded, and the drain of field effect transistor Q4 is connected to the ground. The resistor R6 is connected to the +5V voltage and is connected to the gate of the FET Q3 through the resistor R7, the source of the FET Q3 is grounded, and the drain of the FET Q3 is connected to the base of the transistor Q1 through the resistor R4. The collector is connected to the positive electrode of the light-emitting diode D3 through the resistor R10, the negative electrode of the light-emitting diode D3 is grounded, the collector of the transistor Q1 is connected to the M-BUS+ terminal in the M-BUS bus, and the emitter of the transistor Q1 is connected to the base. There is a resistor R2, and the emitter of the transistor Q1 is connected to the Vmark/space pin of the central processing module. With short circuit protection function, improve safety and stability.

作为优选,所述的M-BUS发送模块包括三级管Q5、场效应管Q6和升压转换器U2,升压转换器U2采用TPS61170升压转换器;所述的中央处理模块的TXD-EN/DIS脚经电阻R17和场效应管Q6的栅极相连,场效应管Q6的源极接地,场效应管Q6的漏极经电阻R16和三极管Q5的基极相连,三极管Q5的基极和三极管Q5的发射极之间连接有电阻R15,三极管Q5的集电极和二极管D4的正极相连,二极管D4的负极和中央处理模块的Vmark/space脚相连,三极管Q5的发射极,一路经稳压管TVS1和二极管D2的正极相连,另一路和二极管D1的负极相连,二极管D2的负极和中央处理模块的Vmark/space脚相连,二极管D2的正极经电容C3接地,二极管D1的正极和升压转换器U2的4脚相连,二极管D1的负极既经电容C6接地又经电阻R13和电阻R14的串联电路接地,电阻R13和电阻R14的连接点和升压转换器U2的1脚相连,升压转换器U2的2脚经电阻R11和电容C5的串联电路接地,升压转换器U2的3脚接地,升压转换器U2的6脚和4脚之间连接有电感L1,升压转换器U2的6脚和5脚相连,升压转换器U2的6脚既接+5V电压又经电容C2和电容C1的并联电路接地。数据传输稳定,成本较低。Preferably, the M-BUS sending module includes a three-stage transistor Q5, a field effect transistor Q6 and a boost converter U2, and the boost converter U2 adopts a TPS61170 boost converter; the TXD-EN of the central processing module The /DIS pin is connected to the gate of the field effect transistor Q6 via the resistor R17, the source of the field effect transistor Q6 is grounded, the drain of the field effect transistor Q6 is connected to the base of the triode Q5 via the resistor R16, and the base of the triode Q5 is connected to the triode A resistor R15 is connected between the emitters of Q5, the collector of the transistor Q5 is connected to the positive pole of the diode D4, the negative pole of the diode D4 is connected to the Vmark/space pin of the central processing module, and the emitter of the transistor Q5 is connected to the voltage regulator tube TVS1. It is connected to the anode of diode D2, the other is connected to the cathode of diode D1, the cathode of diode D2 is connected to the Vmark/space pin of the central processing module, the anode of diode D2 is grounded through capacitor C3, and the anode of diode D1 is connected to boost converter U2 The 4-pin of the diode D1 is connected to the ground, and the negative electrode of the diode D1 is grounded both through the capacitor C6 and the series circuit of the resistor R13 and the resistor R14. The connection point of the resistor R13 and the resistor R14 is connected to the boost converter U2. Pin 2 of the boost converter U2 is grounded through the series circuit of resistor R11 and capacitor C5, pin 3 of the boost converter U2 is grounded, an inductor L1 is connected between pins 6 and 4 of the boost converter U2, and pin 6 of the boost converter U2 is connected to the ground. Connected to pin 5, pin 6 of boost converter U2 is connected to +5V voltage and grounded through the parallel circuit of capacitor C2 and capacitor C1. The data transmission is stable and the cost is low.

作为优选,所述的M-BUS输入微功率无线输出并线转换器包括TTL转USB转换电路,TTL转USB转换电路包括RS232-USB接口转换器U4,RS232-USB接口转换器U4采用PL2303转换器;RS232-USB接口转换器U4的1脚既经电阻R23接+3V电压又和所述的中央处理模块的TXD-EN/DIS脚相连,RS232-USB接口转换器U4的5脚和中央处理模块的RXD-EN/DIS脚相连,RS232-USB接口转换器U4的7脚接地,RS232-USB接口转换器U4的15脚经电阻R26和USB接口JP2的3脚相连,RS232-USB接口转换器U4的16脚经电阻R27和USB接口JP2的2脚相连,USB接口JP2的1脚接+5V电压,USB接口JP2的4脚和5脚均接地,RS232-USB接口转换器U4的17脚经电容C13接地,RS232-USB接口转换器U4的19脚既经电容C14接地又经电阻R24接+3.3V电压,RS232-USB接口转换器U4的20脚接+5V电压,RS232-USB接口转换器U4的21脚既经电容C12接+5V电压又接地,RS232-USB接口转换器U4的27脚和28脚之间连接有晶振Y1,RS232-USB接口转换器U4的27脚、28脚分别经电容C11、电容C9接地。同时具备USB接口,使用更加灵活和方便。Preferably, the M-BUS input micro-power wireless output parallel converter includes a TTL to USB conversion circuit, the TTL to USB conversion circuit includes an RS232-USB interface converter U4, and the RS232-USB interface converter U4 adopts a PL2303 converter ; Pin 1 of RS232-USB interface converter U4 is connected to +3V voltage through resistor R23 and connected to the TXD-EN/DIS pin of the central processing module, and pin 5 of RS232-USB interface converter U4 is connected to the central processing module. The RXD-EN/DIS pin is connected, the 7th pin of the RS232-USB interface converter U4 is grounded, the 15th pin of the RS232-USB interface converter U4 is connected with the 3rd pin of the USB interface JP2 through the resistor R26, and the RS232-USB interface converter U4 The 16-pin of the USB interface is connected to the 2-pin of the USB interface JP2 through the resistor R27. The 1-pin of the USB interface JP2 is connected to +5V voltage. C13 is grounded, pin 19 of RS232-USB interface converter U4 is connected to ground via capacitor C14 and +3.3V voltage via resistor R24, pin 20 of RS232-USB interface converter U4 is connected to +5V voltage, RS232-USB interface converter U4 The 21-pin of the RS232-USB interface converter is connected to the +5V voltage and grounding through the capacitor C12. The crystal oscillator Y1 is connected between the 27-pin and 28-pin of the RS232-USB interface converter U4. The 27-pin and 28-pin of the RS232-USB interface converter U4 are respectively connected to the capacitor. C11 and capacitor C9 are grounded. At the same time, it has a USB interface, which is more flexible and convenient to use.

作为优选,所述的微功率无线处理模块包括芯片U1,芯片U1采用CC2530片上系统;芯片U1的16脚、17脚分别和所述的中央处理模块的DEBUG-RX脚、DEBUG-TX脚相连,芯片U1的1脚、2脚、3脚、4脚及41脚均接地,芯片U1的21脚、24脚、27脚、28脚、29脚、31脚及39脚均接3.3V电压,芯片U1的39脚经电容C51和电容C52的并联电路接地,芯片U1的21脚经电容C53接地,芯片U1的24脚经电容C54接地,芯片U1的27脚经电容C55和电容C56的并联电路接地,芯片U1的31脚经电容C57和电容C58的并联电路接地,3.3V电压经电感L51接电压VCC,芯片U1的25脚和电容C60的一端相连,电容C60的另一端既经电感L52接地又经电容C59和电容C61的串联电路和天线SMA的1脚相连,天线SMA的2脚接地,芯片U1的26脚和电容C62的一端相连,电容C62的另一端和电感L53的一端相连,电感L53的另一端和电容C59与电容C61的连接点相连,芯片U1的22脚和23脚之间连接有晶振Y51,晶振Y51的两端分别经电容C67和电容C68接地,芯片U1的32脚和33脚之间连接有晶振Y52,晶振Y52的两端分别经电容C65和电容C66接地,芯片U1的40脚经电容C64接地,芯片U1的30脚经电阻R51接地。本技术方案的微功率无线处理模块,能够把M-BUS采集数据转换成ZIGBEE无线数据进行传送,采用CC2530片上系统作为处理器,CC2530片上系统是用于2.4GHZ、IEEE802.15.4、zigbee和RF4CE应用的一个真正的片上系统解决方案,它能够以非常低的总的材料成本建立强大的网络节点。CC2530片上系统具有不同的运行模式,使得它尤其适应超低功耗要求的系统。同时,结合德州仪器的业界领先的Zigbee协议栈,提供了一个强大和完整的Zigbee解决方案。在本技术方案中,从M-BUS读取的数据,可以通过Zigbee进行无线数据传送,传送给上层主站进行数据处理,从而实现水电和电表的同时抄读。Preferably, the micro-power wireless processing module includes a chip U1, and the chip U1 adopts a CC2530 system-on-chip; the 16-pin and 17-pin of the chip U1 are respectively connected with the DEBUG-RX pin and the DEBUG-TX pin of the central processing module, Pins 1, 2, 3, 4 and 41 of chip U1 are all grounded, and pins 21, 24, 27, 28, 29, 31 and 39 of chip U1 are all connected to 3.3V voltage. Pin 39 of U1 is grounded through the parallel circuit of capacitor C51 and capacitor C52, pin 21 of chip U1 is grounded through capacitor C53, pin 24 of chip U1 is grounded through capacitor C54, and pin 27 of chip U1 is grounded through the parallel circuit of capacitor C55 and capacitor C56 , the 31 pin of the chip U1 is grounded through the parallel circuit of the capacitor C57 and the capacitor C58, the 3.3V voltage is connected to the voltage VCC through the inductor L51, the 25 pin of the chip U1 is connected to one end of the capacitor C60, and the other end of the capacitor C60 is connected to the ground through the inductor L52. The series circuit of capacitor C59 and capacitor C61 is connected to pin 1 of antenna SMA, pin 2 of antenna SMA is grounded, pin 26 of chip U1 is connected to one end of capacitor C62, the other end of capacitor C62 is connected to one end of inductor L53, inductor L53 The other end of the capacitor C59 is connected to the connection point of the capacitor C61. The crystal oscillator Y51 is connected between pins 22 and 23 of the chip U1. The two ends of the crystal oscillator Y51 are grounded through the capacitor C67 and capacitor C68 respectively. The crystal oscillator Y52 is connected between the pins. The two ends of the crystal oscillator Y52 are grounded through the capacitor C65 and the capacitor C66 respectively. The 40th pin of the chip U1 is grounded through the capacitor C64, and the 30th pin of the chip U1 is grounded through the resistor R51. The micro-power wireless processing module of this technical solution can convert the M-BUS collected data into ZIGBEE wireless data for transmission, and uses the CC2530 SoC as the processor. The CC2530 SoC is used for 2.4GHZ, IEEE802.15.4, zigbee and RF4CE applications A true system-on-a-chip solution that enables building powerful network nodes at a very low total bill of materials cost. The CC2530 SoC has different operating modes, making it especially suitable for systems with ultra-low power consumption requirements. At the same time, combined with the industry-leading Zigbee protocol stack of Texas Instruments, it provides a powerful and complete Zigbee solution. In this technical solution, the data read from the M-BUS can be wirelessly transmitted through Zigbee, and transmitted to the upper master station for data processing, thereby realizing simultaneous reading of water and electricity meters.

本发明的有益效果是:能够把M-BUS采集数据转换成ZIGBEE无线数据进行传送,即从M-BUS读取的数据,可以通过Zigbee进行无线数据传送,传送给上层主站进行数据处理,从而实现水电和电表的同时抄读。本发明的并线转换器具有数据传输稳定、抗干扰能力强、成本低、体型小巧等特点,大大降低了漏抄、误超的发生几率,提高计量仪表抄读的正确性和可靠性。The beneficial effect of the invention is that the M-BUS collected data can be converted into ZIGBEE wireless data for transmission, that is, the data read from the M-BUS can be wirelessly transmitted through Zigbee, and transmitted to the upper master station for data processing, thereby Realize the simultaneous reading of water and electricity meters. The parallel converter of the invention has the characteristics of stable data transmission, strong anti-interference ability, low cost, small size and the like, greatly reduces the occurrence probability of missed copying and false overrun, and improves the correctness and reliability of metering reading.

附图说明Description of drawings

图1是本发明的一种电路原理连接结构框图。FIG. 1 is a block diagram of a circuit principle connection structure of the present invention.

图2是本发明中M-BUS接收模块的一种电路原理图。FIG. 2 is a circuit schematic diagram of the M-BUS receiving module in the present invention.

图3是本发明中M-BUS发送模块的一种电路原理图。Fig. 3 is a circuit schematic diagram of the M-BUS sending module in the present invention.

图4是本发明中短路保护电路的一种电路原理图。FIG. 4 is a circuit schematic diagram of the short-circuit protection circuit in the present invention.

图5是本发明中TTL转USB转换电路的一种电路原理图。FIG. 5 is a circuit schematic diagram of the TTL to USB conversion circuit in the present invention.

图6是本发明中微功率无线处理模块的一种电路原理图。FIG. 6 is a circuit schematic diagram of the micro-power wireless processing module in the present invention.

图中1.中央处理模块,2.M-BUS接收模块,3.M-BUS发送模块,4.微功率无线处理模块,5.电源模块。In the figure 1. Central processing module, 2. M-BUS receiving module, 3. M-BUS sending module, 4. Micro-power wireless processing module, 5. Power supply module.

具体实施方式Detailed ways

下面通过实施例,并结合附图,对本发明的技术方案作进一步具体的说明。The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

实施例:本实施例的M-BUS输入微功率无线输出并线转换器,如图1所示,包括中央处理模块1、M-BUS接收模块2、M-BUS发送模块3、微功率无线处理模块4和为整个并线转换器提供工作电压的电源模块5,M-BUS接收模块2、M-BUS发送模块3及微功率无线处理模块4分别和中央处理模块1相连。Embodiment: The M-BUS input micro-power wireless output parallel converter of this embodiment, as shown in Figure 1, includes a central processing module 1, an M-BUS receiving module 2, an M-BUS sending module 3, and a micro-power wireless processing module. The module 4 and the power supply module 5 that provides the working voltage for the entire parallel converter, the M-BUS receiving module 2, the M-BUS sending module 3 and the micro-power wireless processing module 4 are respectively connected with the central processing module 1.

本实施例中,中央处理模块1包括单片机,单片机采用STM32F103RCT6单片机,STM32F103RCT6单片机的15脚为Vmark/space脚,STM32F103RCT6单片机的16脚、17脚分别为TXD-EN/DIS脚、RXD-EN/DIS脚,STM32F103RCT6单片机的42脚、43脚分别为DEBUG-TX脚、DEBUG-RX脚。In this embodiment, the central processing module 1 includes a single-chip microcomputer, and the single-chip microcomputer adopts the STM32F103RCT6 single-chip microcomputer. The 15-pin of the STM32F103RCT6 single-chip microcomputer is the Vmark/space pin, and the 16-pin and 17-pin of the STM32F103RCT6 single-chip microcomputer are the TXD-EN/DIS pin and the RXD-EN/DIS pin respectively. Pin, pin 42 and pin 43 of STM32F103RCT6 microcontroller are DEBUG-TX pin and DEBUG-RX pin respectively.

本实施例中设有短路保护电路,如图4所示,短路保护电路包括三极管Q1、场效应管Q2~场效应管Q4和差动比较器U1,差动比较器U1采用TL331差动比较器;M-BUS总线中的M-BUS+端经电阻R3和电阻R8的串联电路接地,M-BUS总线中的M-BUS-端既和电阻R3与电阻R8的连接点相连又和差动比较器U1的1脚相连,差动比较器U1的2脚接地,差动比较器U1的3脚既经电阻R9接地又经电阻R1接+5V电压,差动比较器U1的5脚接+5V电压,差动比较器U1的4脚既经电阻R5接+5V电压又和场效应管Q2的栅极相连,场效应管Q2的源极接+5V电压,场效应管Q2的漏极经电阻R12和电容C4的并联电路接地,场效应管Q2的漏极和场效应管Q4的栅极相连,场效应管Q4的源极接地,场效应管Q4的漏极既经电阻R6接+5V电压又经电阻R7和场效应管Q3的栅极相连,场效应管Q3的源极接地,场效应管Q3的漏极经电阻R4和三极管Q1的基极相连,三极管Q1的集电极经电阻R10和发光二极管D3的正极相连,发光二极管D3的负极接地,三极管Q1的集电极又和M-BUS总线中的M-BUS+端相连,三极管Q1的发射极和基极之间连接有电阻R2,三极管Q1的发射极和STM32F103RCT6单片机的Vmark/space脚相连。In this embodiment, a short-circuit protection circuit is provided. As shown in FIG. 4 , the short-circuit protection circuit includes a transistor Q1, a field effect transistor Q2 to a field effect transistor Q4, and a differential comparator U1. The differential comparator U1 adopts a TL331 differential comparator. ;The M-BUS+ terminal in the M-BUS bus is grounded through the series circuit of the resistor R3 and the resistor R8, and the M-BUS- terminal in the M-BUS bus is not only connected to the connection point of the resistor R3 and the resistor R8, but also to the differential comparator. The 1 pin of U1 is connected, the 2 pin of the differential comparator U1 is grounded, the 3 pin of the differential comparator U1 is connected to the ground via the resistor R9 and the +5V voltage via the resistor R1, and the 5 pin of the differential comparator U1 is connected to the +5V voltage , the 4 feet of the differential comparator U1 are connected to the +5V voltage through the resistor R5 and the gate of the FET Q2, the source of the FET Q2 is connected to the +5V voltage, and the drain of the FET Q2 is connected to the resistor R12 The parallel circuit of the capacitor C4 is grounded, the drain of the FET Q2 is connected to the gate of the FET Q4, the source of the FET Q4 is grounded, and the drain of the FET Q4 is connected to the +5V voltage through the resistor R6. It is connected to the gate of the field effect transistor Q3 via the resistor R7, the source of the field effect transistor Q3 is grounded, the drain of the field effect transistor Q3 is connected to the base of the triode Q1 via the resistor R4, and the collector of the triode Q1 emits light via the resistor R10. The anode of the diode D3 is connected to the anode, the cathode of the light-emitting diode D3 is grounded, the collector of the transistor Q1 is connected to the M-BUS+ terminal in the M-BUS bus, and a resistor R2 is connected between the emitter and the base of the transistor Q1. The emitter is connected to the Vmark/space pin of the STM32F103RCT6 microcontroller.

如图2所示,M-BUS接收模块2包括场效应管Q7~场效应管Q11和差动比较器U3,差动比较器U3采用TL331差动比较器;场效应管Q9、场效应管Q10及场效应管Q11的栅极经电阻R25和STM32F103RCT6单片机的TXD-EN/DIS脚相连,场效应管Q9的漏极经电阻R20和差动比较器U3的3脚相连,差动比较器U3的3脚经电容C10接地,电阻R20上并联有二极管D6,且二极管D6的负极和场效应管Q9的漏极相连,二极管D6的正极和差动比较器U3的3脚相连,场效应管Q9的源极和二极管D7及二极管D8的正极相连,二极管D7及二极管D8的负极均和差动比较器U3的1脚相连,差动比较器U3的1脚经电阻R22接地,差动比较器U3的2脚接地,场效应管Q9的源极和场效应管Q10的漏极相连,场效应管Q10的漏极既和二极管D9及二极管D10的负极相连又和二极管D11的正极相连,二极管D9及二极管D10的正极和场效应管Q10的源极相连,场效应管Q10的源极和M-BUS总线中的M-BUS-端相连,二极管D11的负极和二极管D6的负极相连,差动比较器U3的5脚既接+5V电压又经电容C7接地,差动比较器U3的4脚,一路经电阻R21和发光二极管D5的负极相连,发光二极管D5的正极接+5V电压,另一路和场效应管Q8的栅极相连,场效应管Q8的源极接地,场效应管Q8的漏极既经电阻R18接+3V电压又和场效应管Q7的栅极相连,场效应管Q7的源极和场效应管Q11的漏极相连,场效应管Q11的源极接地,场效应管Q7的漏极既和STM32F103RCT6单片机的RXD-EN/DIS脚相连又经电阻R19和电容C8的并联电路和+3V电压相连。As shown in Figure 2, the M-BUS receiving module 2 includes FETs Q7 to FETs Q11 and a differential comparator U3. The differential comparator U3 adopts a TL331 differential comparator; FETs Q9, FETs Q10 And the gate of the field effect transistor Q11 is connected to the TXD-EN/DIS pin of the STM32F103RCT6 microcontroller via the resistor R25, and the drain of the field effect transistor Q9 is connected to the 3 pin of the differential comparator U3 via the resistor R20. Pin 3 is grounded through capacitor C10, diode D6 is connected in parallel with resistor R20, the cathode of diode D6 is connected to the drain of field effect transistor Q9, the anode of diode D6 is connected to pin 3 of differential comparator U3, and the cathode of field effect transistor Q9 is connected. The source is connected to the positive pole of diode D7 and diode D8, and the negative pole of diode D7 and diode D8 is connected to pin 1 of differential comparator U3. Pin 1 of differential comparator U3 is grounded through resistor R22. Pin 2 is grounded, the source of FET Q9 is connected to the drain of FET Q10, the drain of FET Q10 is connected to both the cathode of diode D9 and diode D10, and the anode of diode D11. The anode of D10 is connected to the source of the FET Q10, the source of the FET Q10 is connected to the M-BUS- terminal in the M-BUS bus, the cathode of the diode D11 is connected to the cathode of the diode D6, and the differential comparator U3 The 5th pin is connected to the +5V voltage and grounded through the capacitor C7. The 4th pin of the differential comparator U3 is connected to the negative pole of the LED D5 through the resistor R21, and the positive pole of the LED D5 is connected to the +5V voltage, and the other way is connected to the field effect The gate of the transistor Q8 is connected, the source of the field effect transistor Q8 is grounded, the drain of the field effect transistor Q8 is connected to the +3V voltage through the resistor R18 and is connected to the gate of the field effect transistor Q7, the source of the field effect transistor Q7 and the The drain of the FET Q11 is connected, the source of the FET Q11 is grounded, the drain of the FET Q7 is connected to the RXD-EN/DIS pin of the STM32F103RCT6 microcontroller, and is connected to +3V through the parallel circuit of the resistor R19 and the capacitor C8. voltage is connected.

如图3所示,M-BUS发送模块3包括三级管Q5、场效应管Q6和升压转换器U2,升压转换器U2采用TPS61170升压转换器;STM32F103RCT6单片机的TXD-EN/DIS脚经电阻R17和场效应管Q6的栅极相连,场效应管Q6的源极接地,场效应管Q6的漏极经电阻R16和三极管Q5的基极相连,三极管Q5的基极和三极管Q5的发射极之间连接有电阻R15,三极管Q5的集电极和二极管D4的正极相连,二极管D4的负极和STM32F103RCT6单片机的Vmark/space脚相连,三极管Q5的发射极,一路经稳压管TVS1和二极管D2的正极相连,另一路和二极管D1的负极相连,二极管D2的负极和STM32F103RCT6单片机的Vmark/space脚相连,二极管D2的正极经电容C3接地,二极管D1的正极和升压转换器U2的4脚相连,二极管D1的负极既经电容C6接地又经电阻R13和电阻R14的串联电路接地,电阻R13和电阻R14的连接点和升压转换器U2的1脚相连,升压转换器U2的2脚经电阻R11和电容C5的串联电路接地,升压转换器U2的3脚接地,升压转换器U2的6脚和4脚之间连接有电感L1,升压转换器U2的6脚和5脚相连,升压转换器U2的6脚既接+5V电压又经电容C2和电容C1的并联电路接地。As shown in Figure 3, the M-BUS sending module 3 includes a three-stage transistor Q5, a field effect transistor Q6 and a boost converter U2. The boost converter U2 adopts the TPS61170 boost converter; the TXD-EN/DIS pin of the STM32F103RCT6 microcontroller The resistor R17 is connected to the gate of the field effect transistor Q6, the source of the field effect transistor Q6 is grounded, the drain of the field effect transistor Q6 is connected to the base of the transistor Q5 via the resistor R16, and the base of the transistor Q5 is connected to the emitter of the transistor Q5. A resistor R15 is connected between the poles, the collector of the transistor Q5 is connected to the positive pole of the diode D4, the negative pole of the diode D4 is connected to the Vmark/space pin of the STM32F103RCT6 microcontroller, and the emitter of the transistor Q5 is connected all the way through the voltage regulator tube TVS1 and the diode D2. The positive pole is connected to the negative pole of the diode D1, the negative pole of the diode D2 is connected to the Vmark/space pin of the STM32F103RCT6 microcontroller, the positive pole of the diode D2 is connected to the ground through the capacitor C3, and the positive pole of the diode D1 is connected to the 4 pin of the boost converter U2. The cathode of the diode D1 is grounded both through the capacitor C6 and through the series circuit of the resistor R13 and the resistor R14. The connection point of the resistor R13 and the resistor R14 is connected to the 1 pin of the boost converter U2, and the 2 pin of the boost converter U2 is connected by the resistor The series circuit of R11 and capacitor C5 is grounded, pin 3 of the boost converter U2 is grounded, an inductor L1 is connected between pins 6 and 4 of the boost converter U2, and pins 6 and 5 of the boost converter U2 are connected. Pin 6 of boost converter U2 is connected to +5V voltage and grounded through the parallel circuit of capacitor C2 and capacitor C1.

本实施例中还设有TTL转USB转换电路,如图5所示,TTL转USB转换电路包括RS232-USB接口转换器U4,RS232-USB接口转换器U4采用PL2303转换器;RS232-USB接口转换器U4的1脚既经电阻R23接+3V电压又和STM32F103RCT6单片机的TXD-EN/DIS脚相连,RS232-USB接口转换器U4的5脚和STM32F103RCT6单片机的RXD-EN/DIS脚相连,RS232-USB接口转换器U4的7脚接地,RS232-USB接口转换器U4的15脚经电阻R26和USB接口JP2的3脚相连,RS232-USB接口转换器U4的16脚经电阻R27和USB接口JP2的2脚相连,USB接口JP2的1脚接+5V电压,USB接口JP2的4脚和5脚均接地,RS232-USB接口转换器U4的17脚经电容C13接地,RS232-USB接口转换器U4的19脚既经电容C14接地又经电阻R24接+3.3V电压,RS232-USB接口转换器U4的20脚接+5V电压,RS232-USB接口转换器U4的21脚既经电容C12接+5V电压又接地,RS232-USB接口转换器U4的27脚和28脚之间连接有晶振Y1,RS232-USB接口转换器U4的27脚、28脚分别经电容C11、电容C9接地。In this embodiment, a TTL-to-USB conversion circuit is also provided. As shown in FIG. 5 , the TTL-to-USB conversion circuit includes an RS232-USB interface converter U4, and the RS232-USB interface converter U4 adopts a PL2303 converter; RS232-USB interface converter The 1 pin of the device U4 is connected to the +3V voltage through the resistor R23 and is connected to the TXD-EN/DIS pin of the STM32F103RCT6 microcontroller. The 5 pin of the RS232-USB interface converter U4 is connected to the RXD-EN/DIS pin of the STM32F103RCT6 microcontroller. The 7th pin of the USB interface converter U4 is grounded, the 15th pin of the RS232-USB interface converter U4 is connected to the 3rd pin of the USB interface JP2 via the resistor R26, and the 16th pin of the RS232-USB interface converter U4 is connected to the USB interface JP2 via the resistor R27. Pin 2 is connected, pin 1 of USB interface JP2 is connected to +5V voltage, pins 4 and 5 of USB interface JP2 are grounded, pin 17 of RS232-USB interface converter U4 is grounded through capacitor C13, and pin 17 of RS232-USB interface converter U4 is grounded. Pin 19 is connected to ground via capacitor C14 and +3.3V via resistor R24, pin 20 of RS232-USB interface converter U4 is connected to +5V voltage, pin 21 of RS232-USB interface converter U4 is connected to +5V voltage via capacitor C12 It is also grounded. The crystal oscillator Y1 is connected between pins 27 and 28 of the RS232-USB interface converter U4. The pins 27 and 28 of the RS232-USB interface converter U4 are grounded through capacitor C11 and capacitor C9 respectively.

如图6所示,微功率无线处理模块4包括芯片U1,芯片U1采用CC2530片上系统;芯片U1的16脚、17脚分别和STM32F103RCT6单片机的DEBUG-RX脚、DEBUG-TX脚相连,芯片U1的1脚、2脚、3脚、4脚及41脚均接地,芯片U1的21脚、24脚、27脚、28脚、29脚、31脚及39脚均接3.3V电压,芯片U1的39脚经电容C51和电容C52的并联电路接地,芯片U1的21脚经电容C53接地,芯片U1的24脚经电容C54接地,芯片U1的27脚经电容C55和电容C56的并联电路接地,芯片U1的31脚经电容C57和电容C58的并联电路接地,3.3V电压经电感L51接电压VCC,芯片U1的25脚和电容C60的一端相连,电容C60的另一端既经电感L52接地又经电容C59和电容C61的串联电路和天线SMA的1脚相连,天线SMA的2脚接地,芯片U1的26脚和电容C62的一端相连,电容C62的另一端和电感L53的一端相连,电感L53的另一端和电容C59与电容C61的连接点相连,芯片U1的22脚和23脚之间连接有晶振Y51,晶振Y51的两端分别经电容C67和电容C68接地,芯片U1的32脚和33脚之间连接有晶振Y52,晶振Y52的两端分别经电容C65和电容C66接地,芯片U1的40脚经电容C64接地,芯片U1的30脚经电阻R51接地。As shown in Figure 6, the micro-power wireless processing module 4 includes a chip U1, and the chip U1 adopts the CC2530 system-on-chip; the 16-pin and 17-pin of the chip U1 are respectively connected with the DEBUG-RX pin and the DEBUG-TX pin of the STM32F103RCT6 microcontroller. Pins 1, 2, 3, 4 and 41 are all grounded. Pins 21, 24, 27, 28, 29, 31 and 39 of chip U1 are connected to 3.3V voltage. The pin is grounded through the parallel circuit of capacitor C51 and capacitor C52, the pin 21 of chip U1 is grounded through capacitor C53, the pin 24 of chip U1 is grounded through capacitor C54, the pin 27 of chip U1 is grounded through the parallel circuit of capacitor C55 and capacitor C56, chip U1 Pin 31 is grounded through the parallel circuit of capacitor C57 and capacitor C58, 3.3V voltage is connected to voltage VCC through inductor L51, pin 25 of chip U1 is connected to one end of capacitor C60, and the other end of capacitor C60 is grounded through inductor L52 and through capacitor C59 The series circuit of capacitor C61 is connected to pin 1 of antenna SMA, pin 2 of antenna SMA is grounded, pin 26 of chip U1 is connected to one end of capacitor C62, the other end of capacitor C62 is connected to one end of inductor L53, and the other end of inductor L53 It is connected to the connection point of capacitor C59 and capacitor C61. Crystal oscillator Y51 is connected between pins 22 and 23 of chip U1. The two ends of crystal oscillator Y51 are grounded through capacitor C67 and capacitor C68 respectively, and between pins 32 and 33 of chip U1 The crystal oscillator Y52 is connected, the two ends of the crystal oscillator Y52 are grounded through capacitor C65 and capacitor C66 respectively, the 40th pin of the chip U1 is grounded through the capacitor C64, and the 30th pin of the chip U1 is grounded through the resistor R51.

使用时,M-BUS接收模块和水务企业水表抄表盒相连,M-BUS发送模块和用户水表相连,微功率无线处理模块和电力企业的电表无线抄表设备相连。本发明的M-BUS接收模块和M-BUS发送模块,数据传输稳定,实现方便,成本较低,同时具有短路保护功能,提高安全性和稳定性。本发明的微功率无线处理模块,采用CC2530片上系统作为处理器,CC2530片上系统是用于2.4GHZ、IEEE802.15.4、zigbee和RF4CE应用的一个真正的片上系统解决方案,它能够以非常低的总的材料成本建立强大的网络节点。CC2530片上系统具有不同的运行模式,使得它尤其适应超低功耗要求的系统。同时,结合德州仪器的业界领先的Zigbee协议栈,提供了一个强大和完整的Zigbee解决方案。When in use, the M-BUS receiving module is connected to the water meter reading box of the water enterprise, the M-BUS sending module is connected to the user's water meter, and the micro-power wireless processing module is connected to the electric meter wireless meter reading equipment of the electric power enterprise. The M-BUS receiving module and the M-BUS sending module of the present invention have stable data transmission, convenient implementation and low cost, and have short-circuit protection function, thereby improving safety and stability. The micro-power wireless processing module of the present invention adopts the CC2530 SoC as the processor. The CC2530 SoC is a real SoC solution for 2.4GHZ, IEEE802.15.4, zigbee and RF4CE applications. The material cost to build a strong network node. The CC2530 SoC has different operating modes, making it especially suitable for systems with ultra-low power consumption requirements. At the same time, combined with the industry-leading Zigbee protocol stack of Texas Instruments, it provides a powerful and complete Zigbee solution.

本发明能够把M-BUS采集数据转换成ZIGBEE无线数据进行传送,即从M-BUS读取的数据,可以通过Zigbee进行无线数据传送,传送给上层主站进行数据处理,从而实现水电和电表的同时抄读。本发明的并线转换器具有数据传输稳定、抗干扰能力强、成本低、体型小巧等特点,大大降低了漏抄、误超的发生几率,提高计量仪表抄读的正确性和可靠性。The invention can convert the M-BUS collected data into ZIGBEE wireless data for transmission, that is, the data read from the M-BUS can be wirelessly transmitted through Zigbee, and transmitted to the upper master station for data processing, thereby realizing the integration of water, electricity and electricity meters. Read at the same time. The parallel converter of the invention has the characteristics of stable data transmission, strong anti-interference ability, low cost, small size and the like, greatly reduces the occurrence probability of missed copying and false overrun, and improves the correctness and reliability of metering reading.

Claims (4)

1. An M-BUS input micropower wireless output parallel line converter is characterized by comprising a central processing module (1), an M-BUS receiving module (2), an M-BUS sending module (3), a micropower wireless processing module (4) and a power module (5) for providing working voltage for the whole parallel line converter, wherein the M-BUS receiving module (2), the M-BUS sending module (3) and the micropower wireless processing module (4) are respectively connected with the central processing module (1); the micro-power wireless processing module (4) comprises a chip U1, and a CC2530 system on a chip U1; the 16 pins and the 17 pins of the chip U1 are respectively connected with the DEBUG-RX pin and the DEBUG-TX pin of the central processing module (1), the 1 pin, the 2 pin, the 3 pin, the 4 pin and the 41 pin of the chip U1 are all grounded, the 21 pins, the 24 pins, the 27 pins, the 28 pins, the 29 pins, the 31 pins and the 39 pins of the chip U1 are all connected with 3.3V voltage, the 39 pin of the chip U1 is grounded through a parallel circuit of a capacitor C51 and a capacitor C52, the 21 pin of the chip U1 is grounded through a capacitor C53, the 24 pin of the chip U1 is grounded through a capacitor C54, the 27 pin of the chip U1 is grounded through a parallel circuit of a capacitor C55 and a capacitor C56, the 31 pin of the chip U1 is grounded through a parallel circuit of a capacitor C57 and a capacitor C58, the 3.3V voltage is connected with voltage through an inductor L635, the 25 VCC of the chip U1 is connected with one end of the capacitor C60, the other end of the chip U4624 is connected with the SMA 599 and the SMA 599 pin of the SMA 592 pin of the capacitor SMA 599 and the SMA 59, a pin 26 of a chip U1 is connected with one end of a capacitor C62, the other end of a capacitor C62 is connected with one end of an inductor L53, the other end of the inductor L53 is connected with a connection point of a capacitor C59 and a capacitor C61, a crystal oscillator Y51 is connected between a pin 22 and a pin 23 of the chip U1, two ends of a crystal oscillator Y51 are respectively grounded through the capacitor C67 and the capacitor C68, a crystal oscillator Y52 is connected between a pin 32 and a pin 33 of the chip U1, two ends of the crystal oscillator Y52 are respectively grounded through the capacitor C65 and the capacitor C66, a pin 40 of the chip U1 is grounded through the capacitor C64, and a pin 30 of a chip U1 is grounded through a resistor R51; the M-BUS receiving module (2) comprises field effect transistors Q7-Q11 and a differential comparator U3, wherein the differential comparator U3 adopts a TL331 differential comparator; the gates of the field effect transistors Q9, Q10 and Q11 are connected with the TXD-FN/DIS pin of the central processing module (1) through a resistor R25, the drain of the field effect transistor Q9 is connected with the 3 pin of the differential comparator U3 through a resistor R20, the 3 pin of the differential comparator U3 is grounded through a capacitor C10, a diode D20 is connected in parallel with the resistor R20, the cathode of the diode D20 is connected with the drain of the field effect transistor Q20, the anode of the diode D20 is connected with the 3 pin of the differential comparator U20, the source of the field effect transistor Q20 is connected with the anodes of the diode D20 and the diode D20, the cathodes of the diode D20 and the diode D20 are both connected with the 1 pin of the differential comparator U20, the 1 pin of the differential comparator U20 is connected with the ground through the resistor R20, the 2 pin of the differential comparator U20 is grounded, the source of the field effect transistor Q20 is connected with the cathode of the field effect transistor Q20, the drain of the diode Q20 is connected with the anode of the diode D20 and the diode D20, the anodes of the diode D9 and the diode D10 are connected with the source of a field effect transistor Q10, the source of the field effect transistor Q10 is connected with the M-BUS-end in the M-BUS BUS, the cathode of the diode D11 is connected with the cathode of a diode D6, a pin 5 of a differential comparator U3 is connected with +5V voltage and grounded through a capacitor C7, a pin 4 of the differential comparator U3 is connected with the cathode of a light emitting diode D5 through a resistor R21, the anode of a light emitting diode D5 is connected with +5V voltage, the other is connected with the grid of a field effect transistor Q8, the source of the field effect transistor Q8 is grounded, the drain of the field effect transistor Q8 is connected with +3V voltage through a resistor R18 and the grid of a field effect transistor Q7, the source of a field effect transistor Q7 is connected with the drain of the field effect transistor Q11, the source of the field effect transistor Q11 is grounded, the drain electrode of the field effect transistor Q7 is connected with RXD-FN/DIS pins of the central processing module (1) and is connected with +3V voltage through a parallel circuit of a resistor R19 and a capacitor C8.
2. The M-BUS input micropower wireless output parallel converter of claim 1, comprising a short-circuit protection circuit, wherein the short-circuit protection circuit comprises a triode Q1, a field effect transistor Q2-Q4 and a differential comparator U1, and the differential comparator U1 adopts a TL331 differential comparator; an M-BUS + end in an M-BUS BUS is grounded through a series circuit of a resistor R3 and a resistor R8, an M-BUS-end in the M-BUS BUS is connected with a connection point of the resistor R3 and the resistor R8 and is also connected with a pin 1 of a differential comparator U1, a pin 2 of the differential comparator U1 is grounded, a pin 3 of the differential comparator U1 is grounded through a resistor R9 and is also connected with a voltage of +5V through a resistor R1, a pin 5 of the differential comparator U1 is connected with a voltage of +5V, a pin 4 of the differential comparator U1 is connected with a voltage of +5V through a resistor R5 and is also connected with a grid of a field effect tube Q2, a source of the field effect tube Q2 is connected with a voltage of +5V, a drain of the field effect tube Q2 is grounded through a parallel circuit of a resistor R12 and a capacitor C4, a drain of the field effect tube Q2 is connected with a grid of a drain electrode Q4, a source of the field effect tube Q4 is grounded, a source of the field effect tube Q6862 is connected with a resistor R828653 and a gate of the, the source electrode of the field effect transistor Q3 is grounded, the drain electrode of the field effect transistor Q3 is connected with the base electrode of the triode Q1 through the resistor R4, the collector electrode of the triode Q1 is connected with the anode of the light emitting diode D3 through the resistor R10, the cathode of the light emitting diode D3 is grounded, the collector electrode of the triode Q1 is connected with the M-BUS + end of the M-BUS, the resistor R2 is connected between the emitter electrode and the base electrode of the triode Q1, and the emitter electrode of the triode Q1 is connected with the Vmark/space pin of the central processing module (1).
3. The M-BUS input micropower wireless output parallel converter according to claim 1 or 2, characterized in that the M-BUS sending module (3) comprises a triode Q5, a field effect transistor Q6 and a boost converter U2, the boost converter U2 adopts a TPS61170 boost converter; the TXD-FN/DIS pin of the central processing module (1) is connected with the grid electrode of a field effect tube Q6 through a resistor R17, the source electrode of a field effect tube Q6 is grounded, the drain electrode of the field effect tube Q6 is connected with the base electrode of a triode Q5 through a resistor R16, a resistor R15 is connected between the base electrode of a triode Q5 and the emitter electrode of a triode Q5, the collector electrode of the triode Q5 is connected with the anode electrode of a diode D4, the cathode electrode of a diode D4 is connected with the Vmark/space pin of the central processing module (1), the emitter electrode of a triode Q5, one circuit is connected with the anode electrode of a diode D1 through a voltage regulator TVS1 and a diode D42, the other circuit is connected with the cathode electrode of a diode D1, the cathode electrode of the diode D589 is connected with the Vmark/space pin of the central processing module (1), the anode electrode of a diode D2 is grounded through a capacitor C3, the anode electrode of a diode D1 is connected with the pin of a boost converter U2, the cathode electrode of the diode D6867 is connected with a resistor, the connection point of the resistor R13 and the resistor R14 is connected with a pin 1 of the boost converter U2, a pin 2 of the boost converter U2 is grounded through a series circuit of the resistor R11 and the capacitor C5, a pin 3 of the boost converter U2 is grounded, an inductor L1 is connected between a pin 6 and a pin 4 of the boost converter U2, a pin 6 and a pin 5 of the boost converter U2 are connected, and a pin 6 of the boost converter U2 is grounded through a parallel circuit of the capacitor C2 and the capacitor C1 as well as a voltage of + 5V.
4. The M-BUS input micropower wireless output parallel converter according to claim 1 or 2, comprising a TTL to USB conversion circuit, wherein the TTL to USB conversion circuit comprises an RS232-USB interface converter U4, and the RS232-USB interface converter U4 adopts a PL2303 converter; the 1 pin of the RS232-USB interface converter U4 is connected with +3V voltage through a resistor R23 and is connected with the TXD-FN/DIS pin of the central processing module (1), the 5 pin of the RS232-USB interface converter U4 is connected with the RXD-FN/DIS pin of the central processing module (1), the 7 pin of the RS232-USB interface converter U4 is grounded, the 15 pin of the RS232-USB interface converter U4 is connected with the 3 pin of the USB interface JP2 through a resistor R26, the 16 pin of the RS232-USB interface converter U4 is connected with the 2 pin of the USB interface JP2 through a resistor R27, the 1 pin of the USB interface JP2 is connected with +5V voltage, the 4 pin and the 5 pin of the USB interface JP2 are grounded, the 17 pin of the RS232-USB interface converter U4 is grounded through a capacitor C13, the pin of the RS232-USB interface converter U4 is grounded through a capacitor C14 and a resistor R24, and the RS232-USB interface U4 0 is connected with the USB interface JP 3V +3, the 21 pin of the RS232-USB interface converter U4 is connected with +5V voltage and ground through a capacitor C12, a crystal oscillator Y1 is connected between the 27 pin and the 28 pin of the RS232-USB interface converter U4, and the 27 pin and the 28 pin of the RS232-USB interface converter U4 are respectively connected with ground through a capacitor C11 and a capacitor C9.
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