CN201749552U - Wireless electric power data transmission terminal device - Google Patents

Wireless electric power data transmission terminal device Download PDF

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Publication number
CN201749552U
CN201749552U CN2010201685709U CN201020168570U CN201749552U CN 201749552 U CN201749552 U CN 201749552U CN 2010201685709 U CN2010201685709 U CN 2010201685709U CN 201020168570 U CN201020168570 U CN 201020168570U CN 201749552 U CN201749552 U CN 201749552U
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CN
China
Prior art keywords
circuit
pin
capacitor
wireless
terminal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010201685709U
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Chinese (zh)
Inventor
杨志元
李振东
郜效杰
王志强
欧阳明
陈建东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN XINDAO TECHNOLOGIES Co Ltd
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SHENZHEN XINDAO TECHNOLOGIES Co Ltd
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Priority to CN2010201685709U priority Critical patent/CN201749552U/en
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Publication of CN201749552U publication Critical patent/CN201749552U/en
Anticipated expiration legal-status Critical
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The utility model discloses a wireless electric power data transmission terminal device which comprises an alternating-current power conversion and protection module circuit, a direct-current power conversion module circuit, a wireless CPU circuit, an RS485 interface circuit and a serial Flash interface circuit, wherein the alternating-current power conversion and protection module circuit is connected with the direct-current power conversion module circuit and the RS485 interface circuit respectively, the direct-current power conversion module circuit is connected with the serial Flash interface circuit, and the wireless CPU circuit is biconnected with the RS485 interface circuit and the serial Flash interface circuit respectively. The device can stably and reliably operate on the aspect of electricity utilization information acquisition in the complicated and changeable site environment.

Description

A kind of wireless power data transmission terminal device
Technical field
The utility model relates to data and passes whole technical field, particularly a kind of wireless power data transmission terminal device.
Background technology
DTU in the market (data transmission terminal equipment) product generally all is the direct current supply mode, and the DTU that electric power is used, be generally the integrated scheme of ammeter and DTU, the direct supply that ammeter is drawn is its power supply, this mode is being installed and is being divided into two types, and a kind of is external, and promptly DTU is contained in the etui, link to each other with meter circuit by contact pin, integral body is placed in the shell of ammeter.The shortcoming of this frame mode is to have destroyed the original leakproofness of ammeter, thereby has influence on the overall performance of ammeter and DTU.Another kind is that DTU is built on the circuit board of ammeter, though this mode has solved the problem of leakproofness, has brought the problem of disturbing.The metering circuit of the radiofrequency signal his-and-hers watches meter among the DTU can produce interference in various degree, has reduced the reliability of system.
Transmission terminal configuration parameter in the past need pass through serial ports, links to each other with computer, is configured by configuration software or AT instruction.This is more loaded down with trivial details something for being installed in on-the-spot system.Make troubles for on-the-spot operating personnel, to have improved requirement to field personnel's quality.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of wireless power data transmission terminal device is provided.
A kind of wireless power data transmission terminal device; comprise AC power conversion and protection module circuit, direct supply modular converter circuit, wireless CPU circuit, RS485 interface circuit, serial Flash interface circuit; AC power conversion and protection module circuit connect direct supply modular converter circuit and RS485 interface circuit; direct supply modular converter circuit connects the serial Flash interface circuit
The wireless CPU circuit is connected with the serial Flash interface circuit is two-way with the RS485 interface circuit respectively.
Described AC power conversion and protection module circuit are made up of voltage dependent resistor (VDR) VR1, transformer L1, magnet ring, thermistor TR1, integrated circuit TR and B11; voltage dependent resistor (VDR) VR1 is parallel to input end, and transformer L1, magnet ring, thermistor TR1, integrated circuit TR and B11 connect successively.
Described direct supply modular converter circuit is made up of electrochemical capacitor C11, EMC magnet ring L11, capacitor C 12, power supply chip U11, schottky diode D11, inductance L 12, capacitor C 15, capacitor C 16, capacitor C 17, capacitor C 11, EMC magnet ring L11, power supply chip is passed through in capacitor C 12 parallel connections then, diode D11 in parallel, series inductance L12, then with capacitor C 15, capacitor C 16, capacitor C 17 parallel connections.
Described wireless CPU circuit adopts wireless processor U81, model Q2686.
Described RS485 interface circuit is mainly by optocoupler PQ71, and PQ72,485 chip U202, TVS pipe TVS21, TVS22, TVS23, resistance R 203, R204, thermistor RT21, RT22 form,
The serial data signal of U81 is through optocoupler PQ71; after PQ72 isolates; insert 485 chip U202 transmitting-receiving pin respectively; form differential signal from 485 chip U202 chip 6 pin and 7 pin; 6 pin connect and draw resistance R 204; 7 pin meet pull down resistor R203, and TVS pipe TVS21, TVS22 in parallel, TVS23 protect between between 6 pin and 7 pin and 6 pin and ground, 7 pin and ground.Series thermal-sensitive resistance R T21, RT22 then.
Described serial Flash interface circuit adopts serial FLASH chip U61, and 11~14 pin of FLASH chip U61 are connected with the respective pin of wireless CPU U81, and capacitor C 61 is connected in parallel between the power supply and ground of U61.
Also comprise infrared transtation mission circuit and infrared receiving circuit,
Infrared transtation mission circuit is mainly by U121 modulation chip ICM7555, and infrared transmitting tube E121 forms;
Infrared receiving circuit is by infrared receiving tube U141, resistance R 142, and resistance R 145, triode Q141, resistance R 152, resistance R 153 is formed.
Described infrared transtation mission circuit part, 73 pins of U81 wireless CPU connect 1 pin of triode Q122 by resistance R 121, ground connection behind the series resistor behind the 3 pin serial connection infrared transmitting tube E121 of triode Q122,2 pin of Q122 connect 3 pin of triode Q123,1 pin of triode Q123 is connected with 3 pin of U121 modulation chip ICM7555, by the waveform of U121 to the data load modulation 38K of the 73 pins transmission of U81 wireless CPU.
Described infrared receiving circuit part, 71 pins of U81 are the reception pin of serial data, infrared data receives through infrared receiving tube U141,1 pin output by U141, series resistor R142, resistance R 145, the base stage that enters triode Q141, triode Q141 pin two series resistor R152, resistance R 153 is connected to 71 pins of U81.
Beneficial effect
The wireless power data transmission terminal device that the utility model relates to.Adopt independently-powered mode, make DTU and ammeter obtain liberation from the space.Significantly reduced the possibility of phase mutual interference.PDT-51 has with the identical even higher degree of protection structural design of ammeter, and when having guaranteed the ammeter leakproofness, the airtight performance of self is protected.In addition, the power supply relevant design index that PDT-51 is independently-powered is higher than the performance index of State Standard of the People's Republic of China GB-T17626 defined.Therefore, this device can be reliable and stable runs on site environment power information collection aspect complicated and changeable.
The PDT-51 product of my company fundamentally solves at present existing existing the problems referred to above of like product.It is the problem of leakproofness and self interference.
Add infrared function in the PDT-51 terminal, be convenient to the parameter in the transmission terminal is configured by hander.Simple and convenient.
From configuration aspects, adopted the appearance design of novel uniqueness, sealing property reaches IP55, can reach the performance of dustproof anti-spraying.Robust structure, the shatter-resistant antidetonation.
Anti-surge performance is higher than the level Four requirement of GB-T 17626 defineds.
Anti-pulse train performance is higher than the level Four requirement of GB-T 17626 defineds.
Antistatic property is higher than the level Four requirement of GB-T 17626 defineds.
Description of drawings
Fig. 1 is the utility model wireless power data transmission terminal device overall circuit.
Fig. 2 is the AC power conversion and the protection module circuit of wireless power data transmission terminal device.
Fig. 3 is the direct supply modular converter circuit of wireless power data transmission terminal device.
Fig. 4 is the wireless CPU circuit of wireless power data transmission terminal device.
Fig. 5 is the RS485 interface circuit of wireless power data transmission terminal device.
Fig. 6 is the serial Flash interface circuit of wireless power data transmission terminal device.
Fig. 7 is the infrared circuit of wireless power data transmission terminal device.
Embodiment
Fig. 1 is the utility model wireless power data transmission terminal device overall circuit
Comprise the 220V AC power, AC power conversion and protection module circuit, direct supply modular converter circuit, wireless CPU circuit, RS485 interface circuit, serial Flash interface circuit.
AC power conversion and protection module circuit connect direct supply modular converter circuit and RS485 interface circuit.Direct supply modular converter circuit connects the serial Flash interface circuit.
The wireless CPU circuit is connected with the serial Flash interface circuit is two-way with the RS485 interface circuit respectively.
Also comprise the infrared circuit that is connected in wireless module.Wireless module places the wireless CPU circuit.The wireless CPU circuit connects antenna.
As shown in Figure 2, the power supply of AC power conversion and protection module circuit is to take from the 220V AC power, adopts the single phase power supply mode, need the 220V AC power be converted to 9~12V direct supply with transformer and come to be the total system power supply.Because this device uses in electric system, is connected with the 220V AC power, the requirement of power consumer degree of protection is satisfied in strictness.
The AC power inlet has voltage dependent resistor (VDR) VR1 to carry out surge protection, passes through magnet ring (L1) then and carries out the EMC inhibition, carries out overcurrent protection through thermistor TR1, behind transformer T1, carries out rectifying and wave-filtering.Supply with DC power supply circuit.Available custom circuit.
Circuit is made up of voltage dependent resistor (VDR) VR1, transformer T1, magnet ring, thermistor TR1, integrated circuit TR and B11.Voltage dependent resistor (VDR) VR1 is parallel to input end, and transformer T1, magnet ring, thermistor TR1, integrated circuit TR and B11 connect successively.
As shown in Figure 3, the direct supply modular converter of direct supply modular converter circuit is that the direct supply with 9~12V is converted to the voltage that digital circuit partly need be used in the system, mainly comprise two parts, the 3.8V that wireless CPU needs, the 3.3V voltage that other numerical portions need.
Signal after the AC power rectification is after choking coil and electric capacity filtration Conduction Interference, through the DC/DC conversion.Available custom circuit.
Circuit is made up of electrochemical capacitor C11, EMC magnet ring L11, capacitor C 12, power supply chip U11, schottky diode D11, inductance L 12, capacitor C 15, capacitor C 16, capacitor C 17.Capacitor C 11, EMC magnet ring L11, power supply chip is passed through in capacitor C 12 parallel connections then.Diode D11 in parallel, series inductance L12, then with capacitor C 15, capacitor C 16, capacitor C 17 parallel connections.
As shown in Figure 4, the core component wireless CPU module that adopts in the wireless CPU circuit, integrated MCU and GPRS wireless data sending need not to add MCU and come control module, and system software is fairly simple comparatively speaking.
Circuit is by adopting the wireless CPU circuit to adopt wireless processor U81, model Q2686.And the peripheral resistance capacitance shown in the figure is formed.
As shown in Figure 5, RS485 interface circuit in the RS485 interface circuit is used for providing interface circuit for ammeter and wireless CPU, the RS485 interface is followed in their communication, follows People's Republic of China's power industry standard multifunction electric meter communication protocol (DL/T 645 stipulations) on the software.For the RS485 hardware circuit, mainly be the compatibility that when design, will note circuit, improve antijamming capability and transmission range.In the system, the RS485 interface will be connected the UART2 mouth of wireless CPU, be used for doing data communication fully.Simultaneously, the UART2 mouth need be reserved the external debug interface, uses outside RS232 crossover tool from PC end monitoring serial port data.
Circuit is mainly by optocoupler PQ71, and PQ72,485 chip U202, TVS pipe TVS21, TVS22, TVS23, resistance R 203, R204, thermistor RT21, RT22 form.
The serial data signal of U81 after PQ72 isolates, inserts 485 chip U202 transmitting-receiving pin through optocoupler PQ71 (PS2501) respectively.Form differential signal from 485 chip U202 chip (SN65LBC184) 6 pin and 7 pin, 6 pin connect and draw resistance R 204,7 pin to meet pull down resistor R203.TVS pipe TVS21, TVS22 in parallel, TVS23 protect between between 6 pin and 7 pin and 6 pin and ground, 7 pin and ground.Series thermal-sensitive resistance R T21, RT22 then.
As shown in Figure 6, serial Flash in the serial Flash interface circuit is mainly used to the buffer memory ammeter data, wireless module is after reading ammeter data by the RS485 interface, if data need be carried out buffer memory, then can be kept in this serial Flash, send to reading of data when instruction receiving Surveillance center, more corresponding data are sent to the center by GPRS.The AT25DF641 that the serial Flash chip adopts atmel corp to produce, it has the storage space of 8MB, and interface adopts the SPI interface, has erasable number of times 100,000 times.
Circuit mainly adopts resistance capacitance shown in serial FLASH chip U61 and the figure to constitute.
11~14 pin of FLASH chip U61 are connected with the respective pin of wireless CPU U81.Capacitor C 61 is connected in parallel between the power supply and ground of U61 (AT45DB642D).
As shown in Figure 7, infrared circuit.The data that send send the modulation chip of pin through 38K by the serial ports of wireless module, and the signal after the modulation sends by the infraluminescence pipe.The data that infrared palm machine sends by the infrared receiving tube on the terminal, convert the serial data that wireless module can be discerned to.
Infrared transtation mission circuit is mainly by U121 modulation chip ICM7555, and infrared transmitting tube E121 forms.
73 pins of U81 wireless CPU pass through 1 pin that resistance R 121 connects triode Q122, ground connection behind the series resistor behind the 3 pin serial connection infrared transmitting tube E121 of triode Q122.2 pin of Q122 connect 3 pin of triode Q123, and 1 pin of triode Q123 is connected with 3 pin of U121 modulation chip ICM7555, by the waveform of U121 to the data load modulation 38K of the 73 pins transmission of U81 wireless CPU.
Infrared receiving circuit is fairly simple, by infrared receiving tube U141, and resistance R 142, resistance R 145, triode Q141, resistance R 152, resistance R 153 is formed.
71 pins of U81 are the reception pin of serial data.Infrared data receives through infrared receiving tube U141, by the 1 pin output of U141, series resistor R142, resistance R 145, the base stage that enters triode Q141.Triode Q141 pin two series resistor R152, resistance R 153 is connected to 71 pins of U81.

Claims (9)

1. wireless power data transmission terminal device; comprise AC power conversion and protection module circuit, direct supply modular converter circuit, wireless CPU circuit, RS485 interface circuit, serial Flash interface circuit; it is characterized in that; AC power conversion and protection module circuit connect direct supply modular converter circuit and RS485 interface circuit; direct supply modular converter circuit connects the serial Flash interface circuit
The wireless CPU circuit is connected with the serial Flash interface circuit is two-way with the RS485 interface circuit respectively.
2. wireless power data transmission terminal device according to claim 1; it is characterized in that; described AC power conversion and protection module circuit are made up of voltage dependent resistor (VDR) VR1, transformer L1, magnet ring, thermistor TR1, integrated circuit TR and B11; voltage dependent resistor (VDR) VR1 is parallel to input end, and transformer L1, magnet ring, thermistor TR1, integrated circuit TR and B11 connect successively.
3. wireless power data transmission terminal device according to claim 1, it is characterized in that described direct supply modular converter circuit is formed capacitor C 11 by electrochemical capacitor C11, EMC magnet ring L11, capacitor C 12, power supply chip U11, schottky diode D11, inductance L 12, capacitor C 15, capacitor C 16, capacitor C 17, EMC magnet ring L11, power supply chip is passed through in capacitor C 12 parallel connections then, diode D11 in parallel, series inductance L12, then with capacitor C 15, capacitor C 16, capacitor C 17 parallel connections.
4. wireless power data transmission terminal device according to claim 1 is characterized in that, described wireless CPU circuit adopts wireless processor U81, model Q2686.
5. wireless power data transmission terminal device according to claim 1, it is characterized in that, described RS485 interface circuit is mainly by optocoupler PQ71, and PQ72,485 chip U202, TVS pipe TVS21, TVS22, TVS23, resistance R 203, R204, thermistor RT21, RT22 form
The serial data signal of U81 is through optocoupler PQ71; after PQ72 isolates; insert 485 chip U202 transmitting-receiving pin respectively; form differential signal from 485 chip U202 chip 6 pin and 7 pin; 6 pin connect and draw resistance R 204; 7 pin meet pull down resistor R203, and TVS pipe TVS21, TVS22 in parallel, TVS23 protect between between 6 pin and 7 pin and 6 pin and ground, 7 pin and ground, then series thermal-sensitive resistance R T21, RT22.
6. wireless power data transmission terminal device according to claim 1, it is characterized in that, described serial Flash interface circuit adopts serial FLASH chip U61,11~14 pin of FLASH chip U61 are connected with the respective pin of wireless CPU U81, and capacitor C 61 is connected in parallel between the power supply and ground of U61.
7. wireless power data transmission terminal device according to claim 1 is characterized in that, also comprises infrared transtation mission circuit and infrared receiving circuit,
Infrared transtation mission circuit is mainly by U121 modulation chip ICM7555, and infrared transmitting tube E121 forms;
Infrared receiving circuit is by infrared receiving tube U141, resistance R 142, and resistance R 145, triode Q141, resistance R 152, resistance R 153 is formed.
8. wireless power data transmission terminal device according to claim 7, it is characterized in that, described infrared transtation mission circuit part, 73 pins of U81 wireless CPU connect 1 pin of triode Q122 by resistance R 121, ground connection behind the series resistor behind the 3 pin serial connection infrared transmitting tube E121 of triode Q122,2 pin of Q122 connect 3 pin of triode Q123,1 pin of triode Q123 is connected with 3 pin of U121 modulation chip ICM7555, by the waveform of U121 to the data load modulation 38K of the 73 pins transmission of U81 wireless CPU.
9. wireless power data transmission terminal device according to claim 7, it is characterized in that, described infrared receiving circuit part, 71 pins of U81 are the reception pin of serial data, infrared data receives through infrared receiving tube U141,1 pin output by U141, series resistor R142, resistance R 145, the base stage that enters triode Q141, triode Q141 pin two series resistor R152, resistance R 153 is connected to 71 pins of U81.
CN2010201685709U 2010-04-23 2010-04-23 Wireless electric power data transmission terminal device Expired - Fee Related CN201749552U (en)

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Application Number Priority Date Filing Date Title
CN2010201685709U CN201749552U (en) 2010-04-23 2010-04-23 Wireless electric power data transmission terminal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201685709U CN201749552U (en) 2010-04-23 2010-04-23 Wireless electric power data transmission terminal device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103384093A (en) * 2012-05-03 2013-11-06 苏州强芯电子有限公司 Wireless power supply transmitting circuit
CN110718966A (en) * 2019-10-25 2020-01-21 云南电网有限责任公司信息中心 Data acquisition and management method for power equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103384093A (en) * 2012-05-03 2013-11-06 苏州强芯电子有限公司 Wireless power supply transmitting circuit
CN110718966A (en) * 2019-10-25 2020-01-21 云南电网有限责任公司信息中心 Data acquisition and management method for power equipment

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110216

Termination date: 20170423

CF01 Termination of patent right due to non-payment of annual fee