CN107909786B - M-BUS input micropower wireless output parallel connection converter - Google Patents
M-BUS input micropower wireless output parallel connection converter Download PDFInfo
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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
Technical Field
The invention relates to a communication converter, in particular to an M-BUS input micropower wireless output parallel converter.
Background
At present, a water business enterprise reads data of a user water meter in a field centralized meter reading mode, and meter reading personnel realize the reading of the water meter by connecting a meter reading machine of the water business enterprise and an M-BUS BUS interface of a residential unit building. The electric power enterprise reads the data of the user electric meter in a remote automatic meter reading mode, converts the water meter, the gas meter and the heat meter which are communicated through the M-BUS into DL/T645-2007 general protocol data through the micropower wireless protocol converter, transmits the data to a general collector which collects RS485 electric meters, and sends the data to a master station. Because the M-BUS is a master-slave type half-duplex transmission BUS specially designed for data transmission of the consumption metering instrument, the transmission direction is unidirectional from the master equipment to the slave equipment or from the slave equipment to the master equipment at any time, and therefore, when a water business enterprise and an electric power enterprise simultaneously carry out meter reading, mutual interference can be generated, and the meter reading cannot be carried out.
Disclosure of Invention
The invention mainly solves the technical problem that the existing water business enterprises and power enterprises can not read the water meters and the electric meters of the M-BUS communication at the same time; the utility model provides a M-BUS input micropower wireless output doubling converter, it can convert M-BUS data collection into ZIGBEE wireless data and transmit, and the data that reads from M-BUS can carry out wireless data transfer through the ZIGBEE, transmits to upper main website and carries out data processing to realize the simultaneous reading of water and electricity meter. 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 missing reading and error exceeding, and improves the reading accuracy and reliability of the metering instrument.
The technical problem of the invention is mainly solved by the following technical scheme: the invention comprises a central processing module, an M-BUS receiving module, an M-BUS sending module, a micro-power wireless processing module and a power supply module for providing working voltage for the whole parallel line converter, wherein 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. According to the invention, the M-BUS receiving module and the micropower wireless processing module are arranged, so that M-BUS collected data can be converted into ZIGBEE wireless data for transmission, namely, data read from the M-BUS can be wirelessly transmitted through Zigbee and transmitted to an upper-layer master station for data processing, and thus, the simultaneous reading of water and electricity meters is realized.
Preferably, the M-BUS receiving module 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-EN/DIS pin of the central processing module 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 grounded 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 drain of the field effect transistor Q20, the anode of the diode Q20 is connected with the cathode of the diode D20 and the diode D20, the anode of the diode D20 is connected with the, 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 EN/DIS pin of the central processing module and is connected with +3V voltage through a parallel circuit of a resistor R19 and a capacitor C8. The data transmission is stable, and the cost is lower.
Preferably, the M-BUS input micropower wireless output parallel converter comprises a short-circuit protection circuit, wherein the short-circuit protection circuit comprises a triode Q1, a field-effect tube Q2-a field-effect tube 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. Has short circuit protection function, and improves safety and stability.
Preferably, the M-BUS sending module comprises a triode Q5, a field effect transistor Q6 and a boost converter U2, wherein the boost converter U2 adopts a TPS61170 boost converter; the TXD-EN/DIS pin of the central processing module 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 the triode Q5 and the emitter electrode of the 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, the emitter electrode of the triode Q5, one circuit is connected with the anode electrode of a diode D1 through a voltage regulator TVS1, the other circuit is connected with the cathode electrode of a diode D1, the cathode electrode of the diode D9 is connected with the Vmark/space pin of the central processing module, the anode electrode of a diode D2 is grounded through a capacitor C3, the anode electrode of a diode D1 is connected with the 4 pin of a boost converter U2, the cathode electrode of the diode D1 is grounded through a capacitor C6 and, 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. The data transmission is stable, and the cost is lower.
Preferably, the M-BUS input micropower wireless output parallel line converter comprises a TTL-to-USB conversion circuit, 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 also connected with the TXD-EN/DIS pin of the central processing module, the 5 pin of the RS232-USB interface converter U4 is connected with the RXD-EN/DIS pin of the central processing module, 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 both grounded, the 17 pin of the RS232-USB interface converter U4 is grounded through a capacitor C13, the 19 pin of the RS232-USB interface converter U4 is grounded through a capacitor C14 and also connected with the 3V 3 +3 pin of the RS232-USB interface JP 4 and the USB interface JP 24 is connected with the + 20 voltage of the USB interface JP 4, 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. Possess the USB interface simultaneously, use more nimble and convenient.
Preferably, the micro-power wireless processing module comprises a chip U1, and the chip U1 adopts a CC2530 system on a chip; 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, 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 the voltage through an inductor L5, the VCC pin of the chip U1 is connected with one end of the capacitor C60, the other end of the capacitor C61 is connected with the SMA 599 pin of the SMA 599 and the SMA 599 pin of the SMA 599, 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 micropower wireless processing module of the technical scheme can convert M-BUS collected data into ZIGBEE wireless data for transmission, a CC2530 system on chip is used as a processor, and the CC2530 system on chip is a real system on chip solution for 2.4GHZ, IEEE802.15.4, ZIGBEE and RF4CE applications, and can establish a powerful network node with very low total material cost. The CC2530 system on chip has different operating modes, making it particularly suited for systems with ultra-low power consumption requirements. Meanwhile, a strong and complete Zigbee solution is provided by combining the leading Zigbee protocol stack in the industry of Texas instruments. In the technical scheme, data read from the M-BUS can be wirelessly transmitted through Zigbee and transmitted to an upper-layer master station for data processing, so that the reading of water and electricity meters can be realized simultaneously.
The invention has the beneficial effects that: the data acquisition of the M-BUS can be converted into ZIGBEE wireless data to be transmitted, namely, the data read from the M-BUS can be transmitted to an upper-layer main station for data processing through Zigbee wireless data transmission, so that the reading of the water and the electricity meters can be realized at the same time. 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 missing reading and error exceeding, and improves the reading accuracy and reliability of the metering instrument.
Drawings
Fig. 1 is a block diagram of a circuit schematic connection structure of the present invention.
Fig. 2 is a schematic circuit diagram of the M-BUS receiving module of the present invention.
FIG. 3 is a schematic diagram of the M-BUS transmitting module of the present invention.
Fig. 4 is a schematic circuit diagram of the short-circuit protection circuit of the present invention.
Fig. 5 is a schematic circuit diagram of a TTL to USB conversion circuit according to the present invention.
Fig. 6 is a schematic circuit diagram of a micropower wireless processing module according to the present invention.
In the figure, 1 is a central processing module, 2 is an M-BUS receiving module, 3 is an M-BUS sending module, 4 is a micro-power wireless processing module, and 5 is a power supply module.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): the M-BUS input micropower wireless output parallel line converter of the embodiment, as shown in fig. 1, includes a central processing module 1, an M-BUS receiving module 2, an M-BUS transmitting 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 transmitting module 3 and the micropower wireless processing module 4 are respectively connected with the central processing module 1.
In this embodiment, the central processing module 1 includes a single chip microcomputer, the single chip microcomputer adopts the STM32F103RCT6 single chip microcomputer, 15 feet of the STM32F103RCT6 single chip microcomputer are Vmark/space feet, 16 feet and 17 feet of the STM32F103RCT6 single chip microcomputer are TXD-EN/DIS feet and RXD-EN/DIS feet respectively, and 42 feet and 43 feet of the STM32F103RCT6 single chip microcomputer are DEBUG-TX feet and DEBUG-RX feet respectively.
In this embodiment, a short-circuit protection circuit is provided, as shown in fig. 4, the short-circuit protection circuit includes a triode Q1, a field-effect transistor Q2-a field-effect transistor Q4, and a differential comparator U1, where 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 STM32F103RCT6 single chip microcomputer.
As shown in fig. 2, the M-BUS receiving module 2 includes fets Q7-Q11 and a differential comparator U3, and the differential comparator U3 adopts a TL331 differential comparator; the gates of the field effect transistor Q9, the field effect transistor Q10 and the field effect transistor Q11 are connected with the TXD-EN/DIS pin of the STM32F103RCT6 singlechip through a resistor R25, the drain of the field effect transistor Q9 is connected with the 3 pins of the differential comparator U20 through a resistor R20, the 3 pins of the differential comparator U20 are grounded through a capacitor C20, 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 pins 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 a 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 diode Q20 and the drain 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-EN/DIS pins of the STM32F103RCT6 singlechip, and is connected with +3V voltage through a parallel circuit of a resistor R19 and a capacitor C8.
As shown in fig. 3, the M-BUS sending module 3 includes a triode Q5, a fet Q6, and a boost converter U2, the boost converter U2 adopts a TPS61170 boost converter; the TXD-EN/DIS pin of the STM32F103RCT6 singlechip is connected with the grid electrode of a field effect tube Q6 through a resistor R17, the source electrode of the 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 a triode Q5 is connected with the anode electrode of a diode D4, the cathode electrode of the diode D4 is connected with the Vmark/space pin of the STM32F103RCT6 singlechip, the emitter electrode of the triode Q5 is connected with the anode electrode of a diode D1 through a voltage regulator TVS1, the other circuit is connected with the cathode electrode of the diode D1, the cathode electrode of the diode D1 is connected with the Vmark/space pin of the STM32F103RCT 1, the anode electrode of the diode D1 is connected with the ground through a capacitor C1, the anode electrode of the diode D1 is connected with the resistor R1, the resistor R1 and the resistor R1, the anode of the, 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.
In this embodiment, a TTL to USB conversion circuit is further provided, and 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 employs 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-EN/DIS pin of an STM32F103RCT6 singlechip, the 5 pin of the RS232-USB interface converter U4 is connected with the RXD-EN/DIS pin of an STM32F103RCT6 singlechip, 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 a 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 both grounded, the 17 pin of the RS232-USB interface converter U84 is grounded through a capacitor C13, the pin 19 of the RS232-USB interface converter U4 is connected with the +3V voltage through a capacitor C14 and the RS232-USB interface converter U24 is connected with the RS 232V voltage through a capacitor R4620V +5V interface converter U5, the RS232-USB interface U4V interface is connected with the USB interface 5V interface converter U3, 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 grounded through a capacitor C11 and a capacitor C9 respectively.
As shown in fig. 6, the micro-power wireless processing module 4 includes a chip U1, the chip U1 employs a CC2530 system on a chip; the 16 pins and the 17 pins of the chip U1 are respectively connected with a DEBUG-RX pin and a DEBUG-TX pin of an STM32F103RCT6 singlechip, 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 pin, the 24 pin, the 27 pin, the 28 pin, the 29 pin, the 31 pin and the 39 pin 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 a voltage VCC by an inductor L51, the pin 25 pin of the chip U1 is connected with one end of a capacitor C60, the other end of the capacitor C52 is connected with a capacitor C52, the SMA pin of the SMA 52, the chip U52 is connected with a capacitor C52, the chip U52, the other end of the capacitor C62 is connected with one end of the inductor L53, the other end of the inductor L53 is connected with a connection point of the capacitor C59 and the capacitor C61, a crystal oscillator Y51 is connected between a pin 22 and a pin 23 of the chip U1, two ends of the crystal oscillator Y51 are grounded through the capacitor C67 and the capacitor C68 respectively, 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 grounded through the capacitor C65 and the capacitor C66 respectively, a pin 40 of the chip U1 is grounded through the capacitor C64, and a pin 30 of the chip U1 is grounded through the resistor R51.
When the device is used, the M-BUS receiving module is connected with a water meter reading box of a water business enterprise, the M-BUS sending module is connected with a user water meter, and the micropower wireless processing module is connected with wireless meter reading equipment of an electric power enterprise. The M-BUS receiving module and the M-BUS sending module have the advantages of stable data transmission, convenient realization, lower cost, short circuit protection function and improved safety and stability. The micropower wireless processing module of the present invention uses a CC2530 system on chip as a processor, and the CC2530 system on chip is a real system on chip solution for 2.4GHZ, ieee802.15.4, zigbee, and RF4CE applications, which can build powerful network nodes with very low total material cost. The CC2530 system on chip has different operating modes, making it particularly suited for systems with ultra-low power consumption requirements. Meanwhile, a strong and complete Zigbee solution is provided by combining the leading Zigbee protocol stack in the industry of Texas instruments.
The invention can convert the M-BUS collected data into ZIGBEE wireless data for transmission, namely the data read from the M-BUS can be transmitted wirelessly through Zigbee and transmitted to an upper-layer master station for data processing, thereby realizing the simultaneous reading of the water and the electricity meters. 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 missing reading and error exceeding, and improves the reading accuracy and reliability of the metering instrument.
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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| CN112270819A (en) * | 2020-09-25 | 2021-01-26 | 湖南常德牌水表制造有限公司 | M-Bus input micro-power-consumption wireless output parallel converter |
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| CN202189462U (en) * | 2011-09-15 | 2012-04-11 | 长沙威胜信息技术有限公司 | Concentrator M-bus main machine |
| US20140201599A1 (en) * | 2013-01-15 | 2014-07-17 | International Business Machines Corporation | Error protection for integrated circuits in an insensitive direction |
| CN204884149U (en) * | 2015-06-24 | 2015-12-16 | 河南卓正电子科技有限公司 | A MBUS converting circuit for collector |
| CN106375170A (en) * | 2016-08-26 | 2017-02-01 | 宁波三星医疗电气股份有限公司 | Mbus master node receiving circuit |
| CN106781375A (en) * | 2016-12-10 | 2017-05-31 | 国网浙江省电力公司湖州供电公司 | Water meter ammeter hotlist gas meter four-in-one converter |
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