CN203812395U - Wireless signal extended data transmission system of power equipment - Google Patents
Wireless signal extended data transmission system of power equipment Download PDFInfo
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- CN203812395U CN203812395U CN201420180650.4U CN201420180650U CN203812395U CN 203812395 U CN203812395 U CN 203812395U CN 201420180650 U CN201420180650 U CN 201420180650U CN 203812395 U CN203812395 U CN 203812395U
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Abstract
The utility model discloses a wireless signal extended data transmission system of power equipment. The wireless signal extended data transmission system comprises a first part and a second part, wherein the first part is connected with a data collecting terminal through an RS485 bus; the second part is connected with a collecting object through an RS485 bus; the first part is communicated with the second part through an integrated network which comprises a wireless network and a power carrier wire; both the first part and the second part comprise power carrier communication units, micropower wireless communication units, 485 receiving and transmitting units and central processing units, wherein the power carrier communication units and the 485 receiving and transmitting units are connected with the central processing units, and the micropower wireless communication units are connected with the central processing units through signal amplification units. By using the system, the data collecting terminal is installed in signal covering areas with GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access) and the like, so as to guarantee that a master station system is effectively interacted with field devices through wireless networks of GPRS, CDMA and the like and ensure the accuracy and intensity of signals, and the signals are transmitted through a plurality of networks such as the RS485 buses, the power carrier wire and the wireless network and the like, so as to guarantee the stability of the system.
Description
Technical field
The utility model belongs to communication technical field, is specifically related to a kind of power equipment wireless signal extension data transmission system.
Background technology
In each power supply enterprise, local public affairs become, specially becoming and carrying out in " all standing, full collection, full pre-payment " project implementation process, run into the problem of GPRS, cdma network no signal, signal difference, each producer often takes mobile collection device location, extend receiving antenna, set up the means such as wireless gain apparatus solves, position of mobile equipment, prolongation receiving antenna are subject to environmental restraint, be difficult to satisfactorily resolve practical problems, and bring a large amount of later maintenance work; Set up wireless gain apparatus and can comparatively effectively solve practical site problems, but application cost is very large, is difficult to spread.In view of above reason, power supply enterprise a kind ofly can ensure communication quality in the urgent need to finding, can use existing electric power terminal device and cost-saving solution again, to solve, basement, closed environment is carried out to relevant data acquisition the problem with master station communication.
Current a little less than electricity load management terminal GPRS, CMDA no signal, signal, the network situation such as go offline, research institution and corporate boss will concentrate on energy in research wireless module receiving sensitivity and antenna matching degree of accuracy both at home and abroad, wish from overcoming the above problems in essence, but produce little effect, still appear on the market without specific product or scheme at present.We for GPRS, CDMA no signal, signal a little less than, the network on-site actual situations such as go offline carried out Essential Analysis, find that above situation is that many-sided reason causes, as signal drift, base station transmitting power is limited, buildings blocks, other high-power wireless signal interference, climatic factor etc.Numerous reasons are difficult to accomplish basic solution from Wi-Fi above, therefore " power equipment wireless signal extension transmission system " the load management terminal data transmission distance that increases electric power is proposed, with a little less than fundamentally solving electricity load management terminal GPRS, CMDA no signal, signal, the network problem such as go offline.
Current a little less than electricity load management terminal GPRS, CMDA no signal, signal, the network situation such as go offline, research institution and corporate boss will concentrate on energy in research wireless module receiving sensitivity and antenna matching degree of accuracy both at home and abroad, wish from overcoming the above problems in essence, but produce little effect, still appear on the market without specific product or scheme at present.In the time running into the situation no signal of basement, closed environment and the problem of signal difference, mainly carry out in the following ways:
(1) again set up base station in this area by mobile network service business, thoroughly solve signal problem, but which investment is very large, general operator is difficult to meet customer requirement;
(2) between collecting device and acquisition target, adopt the mode of directly disposing 485 very long null modem cables, which quantities is very large, need to pull strings and burrow everywhere to uphole equipment position from basement;
(3), by private radio passage, as ZigBee, 450MHz radio channel carry out data transmission, but which is larger with the impact of the factor such as weather, external environment, not only needs to increase a large amount of trunkings, also has lot of unstable factor.
Summary of the invention
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, a kind of power equipment wireless signal extension data transmission system is provided, between acquisition terminal and acquisition target, set up one data transmission system safely and effectively, ensure that main website is undertaken by the wireless network such as GPRS, CDMA and field apparatus effectively mutual.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of power equipment wireless signal extension data transmission system is provided, it is characterized in that: comprise the Part I being connected with data collection station by RS485 bus and the Part II being connected with acquisition target by RS485 bus; Described Part I is realized and being communicated by letter by co-existence network with Part II; Described co-existence network comprises wireless network, power carrier line; Described Part I and Part II include power line carrier, PLC unit, micro power radio communication unit, 485 Transmit-Receive Units and central processing unit; Described power line carrier, PLC unit, 485 Transmit-Receive Units are connected with central processing unit; Described micro power radio communication unit is connected with central processing unit by signal amplification unit.
Described Part I also comprises infrared communication unit, enciphering/deciphering unit; Described infrared communication unit is all connected with the central processing unit of Part I with enciphering/deciphering unit.
Described Part II also comprises infrared communication unit, enciphering/deciphering unit; Described infrared communication unit is all connected with the central processing unit of Part II with enciphering/deciphering unit.
The power line carrier, PLC unit of described Part I and Part II includes SSC1641 chip.
485 Transmit-Receive Units of described Part I and Part II are ISL3152E chip.
The micro power radio communication unit of described Part I and Part II includes NRF24L01 chip.
The signal amplification unit NRF24L01 inter-process of described Part I and Part II.
The infrared communication unit of described Part I and Part II includes infrared reception HS0038B chip and infrared transmission ROM-IR5C3-2A chip.
The enciphering/deciphering unit of described Part I and Part II includes PSAM key management module and ESAM key management module.
The power equipment wireless signal extension data transmission system that the utility model provides has following beneficial effect:
1, by this system, data collection station can be arranged on and there is the area that the signal such as GPRS, CDMA can cover, and by setting up one data transmission relations safely and effectively between this system and acquisition target (as equipment such as electric energy meters), ensure that main station system is undertaken by the wireless network such as GPRS, CDMA and field apparatus (data collection station, acquisition target etc.) effectively mutual, guarantee accuracy and the intensity of signal;
2, by multiple networking mode signal transmissions such as RS485 line, power carrier line and wireless networks, set up redundant configuration link physical layer, solve the large problem that is affected by the external environment of communicating by letter between available data acquisition terminal and acquisition target, ensure the stability of this system;
3, by reload signal extension apparatus in existing communication link, extend the transmission range of signal, ensure without the data in GPRS, the CDMA signal place stability of folding arms.
Brief description of the drawings
The system principle Organization Chart of the power equipment wireless signal extension data transmission system Application Example that Fig. 1 provides for the utility model;
The theory diagram of the embodiment of the power equipment wireless signal extension data transmission system that Fig. 2 provides for the utility model;
Fig. 3 is SSC1641 chip and peripheral circuit schematic diagram thereof;
Fig. 4 is ESAM key management module, PSAM key management module schematic diagram;
Fig. 5 A is coupling and the chip protection circuit of 485 level transferring chip;
Fig. 5 B is 485 level transferring chip (signal trend) peripheral circuits;
Fig. 5 C externally sends optical coupling isolation circuit;
Fig. 5 D externally receives optical coupling isolation circuit;
Fig. 6 A is HS0038B chip and peripheral circuit schematic diagram thereof;
Fig. 6 B is ROM-IR5C3-2A chip and peripheral circuit schematic diagram thereof;
Fig. 7 is NRF24L01 chip and peripheral circuit schematic diagram thereof;
Fig. 8 is NRF24L01 chip internal schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail, but they are not to further restriction of the present utility model.
As shown in Figures 1 and 2, the power equipment wireless signal extension data transmission system that the utility model provides, comprise the Part I that is connected with data collection station by RS485 bus and by RS485 bus and acquisition target (what in the present embodiment, provide is electric energy meter, but also can be circuit breaking controller, 485 interface monitor equipment, concentrator or industrial computer etc.) Part II that connects; Part I is realized and being communicated by letter by co-existence network with Part II; Co-existence network comprises wireless network, power carrier line; Part I and Part II include power line carrier, PLC unit, micro power radio communication unit, 485 Transmit-Receive Units and central processing unit (CPU); Power line carrier, PLC unit, 485 Transmit-Receive Units are connected with central processing unit; Micro power radio communication unit carries out data interaction by signal amplification unit and central processing unit.
Practical function, networking mode and principle are as follows: first receive by GPRS the order of checking meter by concentrator, the concentrator order data of checking meter is again delivered to wireless signal extension data transmission system (or wire signal extension data transmission system) by RS485 interface, by wireless signal extension data transmission system (being micro power radio communication unit) or wire signal extension data transmission system (being power line carrier, PLC unit), meter reading data is delivered to basement or the severe destination receiving element of environment again, this unit is corresponding to wireless signal extension data transmission system (or wire signal extension data transmission system), carrying out data with same communicating wireless signals mode or wire signal power line carrier, PLC mode is delivered on ammeter, ammeter receives that amr frame carries out loopback table data, table data are beamed back data on concentrator with contrary path and identical transmission mode, turn back to again main website, whole Principle of Communication that Here it is, in the middle of be applied to GPRS communication, micro-power wireless communication, power carrier communication and 485 wire communications.
Part I also comprises infrared communication unit, enciphering/deciphering unit; Infrared communication unit is all connected with the central processing unit of Part I with enciphering/deciphering unit.
Part II also comprises infrared communication unit, enciphering/deciphering unit; Infrared communication unit is all connected with the central processing unit of Part II with enciphering/deciphering unit.
The power line carrier, PLC unit of Part I and Part II includes SSC1641 chip; The peripheral circuit of SSC1641 chip comprises storage chip MIC24C02, and the filtering circuits such as resistance, electric capacity etc., are shown in Fig. 3.
The peripheral circuit of SSC1641 chip comprises signal filtering, power supply, clock, reset, external memory storage, the control of transmitting-receiving pilot lamp, zero passage detection input, carrier signal is inputted by the 4th pin SSCIN, after peripheral circuit filtering, be input to again SSC1641 inside and carry out demodulation process, and undertaken by the 13rd pin zero passage detection control, to reach low noise, finally processed for host CPU by the signal after the 17th output demodulation, the 18th pin receives after digital signal, undertaken outputing to electrical network by the 7th pin SSCOUT after carrier modulation send by inside.
485 Transmit-Receive Units of Part I and Part II are ISL3152E chip; The peripheral circuit of ISL3152E chip comprises the isolating device such as diode, light lotus root.
As shown in Fig. 5 A to Fig. 5 D; the peripheral circuit of ISL3152E chip comprises transmission circuit and transmitting-receiving control circuit (as shown in Figure 5 B) and 485 match circuits and holding circuit part (as shown in Figure 5A); receiving and transmitting signal is connected to respectively optocoupler and isolates (as Fig. 5 C and Fig. 5 D), to avoid inter-signal interference.By on draw rear the 1st, 4 pin that send respectively, output after 3152 internal electrical flat turns are changed to differential signal (A, B), receive with sending and controlled by the 2nd, 3 peripheral circuits that are connected (transistor amplifier), in the time receiving, 2,3 pin are in low level, and when transmission, 2,3 pin are high level.For ensureing that long Distance Transmission signal can not produce reflection, output is added with build-out resistor, has voltage dependent resistor (VDR), to protect high pressure not breakdown in the differential lines of output simultaneously.
The micro power radio communication unit of Part I and Part II includes NRF24L01 chip;
the peripheral circuit of chip comprises the filtering circuits such as inductance, resistance, electric capacity, as shown in Figure 7.
NRF24L01 chip is by NORDIC
[1]the monolithic wireless transceiver chip of the ISM frequency range that is operated in 2.4GHz ~ 2.5GHz of producing.As shown in Figure 8, NRF24L01 chip comprises: frequency generator, enhancement mode " SchockBurst " mode controller, power amplifier, crystal oscillator, modulator and demodulator.Arranging of output power channel selection and agreement can arrange by SPI interface, almost can be connected to various singlechip chips, and completes wireless data transmission work.Its periphery is mainly clock, power supply benchmark, radio frequency matching circuit.Communicate by letter with host CPU by SPI mode, obtain the information that will send, modulate with power amplification unit and amplify by inner modulation device again, by the 12nd, after the 13ANT match circuit that outputs to antenna mates, re-send to antenna and carry out wireless transmission, the signal that in like manner antenna is received can enter NRF24L01 through match circuit, after carry out low noise amplification, and carrying out demodulation process, the signal of processing send host CPU to process by the mode of SPI.The LNA (low noise amplification) that chip internal is integrated and PA (power amplifying part) are respectively signal amplification unit and the power amplifying part of this power equipment wireless signal extension data transmission system.
The infrared communication unit of Part I and Part II includes infrared reception HS0038B chip and infrared transmission ROM-IR5C3-2A chip; As shown in Figure 6A, the peripheral circuit of HS0038B chip comprises the match circuits such as resistance, electric capacity, triode; As shown in Figure 6B, the peripheral circuit of ROM-IR5C3-2A chip comprises the match circuit such as resistance, electric capacity.
Infrared reception adopts receiving tube HS0038B, and its periphery is mainly filtering circuit and output pull-up circuit, and infrared receiving tube is receiving after infrared signal, through inner modulation /demodulation, by draw output.Infrared transmission peripheral circuit by send amplify and modulated carrier amplify form, the signal of being exported by host CPU through amplification after be modulated to again on the carrier wave of 38KHZ, send on infrared transmission diode, sent by infrared transmission diode.
The enciphering/deciphering unit of Part I and Part II includes PSAM key management module and ESAM key management module; PSAM key management module is communicated by letter with subscriber card, and ESAM key management module operates subscriber card information encryption, deciphering and various key authentication, and coordinates data processing module completing user charging function.
As shown in Figure 4, this circuit is ESAM key management module, PSAM key management module schematic diagram, and this circuit is built as basis taking TDA8007 integrated circuit, and wherein AD0 ~ AD3 connects the address bus of CPU, PC0 ~ PC7 connects the data bus of CPU, completes the data interaction with CPU; ESAM_CLK, ESAM_RST, ESAM_IO are the connecting interfaces of ESAM key management module, are responsible for and the communicating by letter of ESAM key module; PSAM_C4, PSAM_C8, PSAM_CLK, PSAM_RST, PSAM_IO, PSAM_PRES are the connecting interfaces of PSAM key management module; be responsible for and the communicating by letter and to PSAM key module power supply, and PSAM key module being made to electric protection and attack protection protects of PSAM key module.
For different data terminals, at hardware aspect, identical power supply and telecommunication circuit pin interface are defined, can carry out at any time the replacement of dissimilar module, module after replacement carries out communicating with host CPU, carry out automatic identification identity by host CPU, carry out the replacement of corresponding parametric variable by authentication, to reach and current communication modes coupling.
The principle of work of the power equipment wireless signal extension data transmission system that the utility model provides is:
First receive by GPRS the order of checking meter by concentrator, the concentrator order data of checking meter is again delivered to wireless signal extension data transmission system by RS485 interface, by micro power radio communication unit or the power line carrier, PLC unit of wireless signal extension data transmission system, meter reading data is delivered to basement or the severe destination receiving element of environment again, this unit is corresponding to wireless signal extension data transmission system, carrying out data with same communicating wireless signals mode or wire signal power line carrier, PLC mode is delivered on ammeter, ammeter receives that amr frame carries out loopback table data, table data are beamed back data on concentrator with contrary path and identical transmission mode, turn back to again main website, whole Principle of Communication that Here it is, in the middle of be applied to GPRS communication, micro-power wireless communication, power carrier communication and 485 wire communications.
By this system of setting up, data collection station can be arranged on the region that the signal such as GPRS, CDMA covers completely, and by setting up one data transmission relations safely and effectively between this system and acquisition target (as equipment such as electric energy meters), ensure that main station system is undertaken by the wireless network such as GPRS, CDMA and field apparatus (data collection station, acquisition target etc.) effectively mutual, guarantee accuracy and the intensity of signal; By multiple networking mode signal transmissions such as RS485 line, power carrier line and wireless networks, set up redundant configuration link physical layer, solve communication connection problem between available data acquisition terminal and acquisition target, ensure the stability of this system; By reload signal extension apparatus in existing communication link, extend the transmission range of signal, ensure without the data in GPRS, the CDMA signal place stability of folding arms.
Claims (9)
1. a power equipment wireless signal extension data transmission system, is characterized in that: comprise the Part I being connected with data collection station by RS485 bus and the Part II being connected with acquisition target by RS485 bus; Described Part I is realized and being communicated by letter by co-existence network with Part II; Described co-existence network comprises wireless network, power carrier line; Described Part I and Part II include power line carrier, PLC unit, micro power radio communication unit, 485 Transmit-Receive Units and central processing unit; Described power line carrier, PLC unit, 485 Transmit-Receive Units are connected with central processing unit; Described micro power radio communication unit is connected with central processing unit by signal amplification unit.
2. power equipment wireless signal extension data transmission system according to claim 1, is characterized in that: described Part I also comprises infrared communication unit, enciphering/deciphering unit; Described infrared communication unit is all connected with the central processing unit of Part I with enciphering/deciphering unit.
3. power equipment wireless signal extension data transmission system according to claim 1 and 2, is characterized in that: described Part II also comprises infrared communication unit, enciphering/deciphering unit; Described infrared communication unit is all connected with the central processing unit of Part II with enciphering/deciphering unit.
4. power equipment wireless signal extension data transmission system according to claim 1, is characterized in that: the power line carrier, PLC unit of described Part I and Part II includes SSC1641 chip.
5. power equipment wireless signal extension data transmission system according to claim 1, is characterized in that: 485 Transmit-Receive Units of described Part I and Part II are ISL3152E chip.
6. power equipment wireless signal extension data transmission system according to claim 1, is characterized in that: the micro power radio communication unit of described Part I and Part II includes NRF24L01 chip.
7. power equipment wireless signal extension data transmission system according to claim 1, it is characterized in that: Part I is by receiving the wireless signals such as GPRS/CDMA, wireless signal extension data transmission system internal conversion is carrier communication mode, data are sent to Part II by power carrier, by being reduced to after digital signal with the signal amplification unit processing of Part II, be converted to RS485 signal, sending the port in table meter RS485 by RS485 bus.
8. power equipment wireless signal extension data transmission system according to claim 3, is characterized in that: the infrared communication unit of described Part I and Part II includes infrared reception HS0038B chip and infrared transmission ROM-IR5C3-2A chip.
9. power equipment wireless signal extension data transmission system according to claim 3, is characterized in that: the enciphering/deciphering unit of described Part I and Part II includes PSAM key management module and ESAM key management module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420180650.4U CN203812395U (en) | 2014-04-15 | 2014-04-15 | Wireless signal extended data transmission system of power equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420180650.4U CN203812395U (en) | 2014-04-15 | 2014-04-15 | Wireless signal extended data transmission system of power equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200634A (en) * | 2014-09-18 | 2014-12-10 | 冯维元 | GPRS (General Packet Radio Service) relay of remote ammeter reading system |
| CN106384496A (en) * | 2016-10-26 | 2017-02-08 | 深圳量子力能源互联网有限公司 | Power consumption information acquisition device and system |
-
2014
- 2014-04-15 CN CN201420180650.4U patent/CN203812395U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200634A (en) * | 2014-09-18 | 2014-12-10 | 冯维元 | GPRS (General Packet Radio Service) relay of remote ammeter reading system |
| CN106384496A (en) * | 2016-10-26 | 2017-02-08 | 深圳量子力能源互联网有限公司 | Power consumption information acquisition device and system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZIYANG POWER SUPPLY COMPANY STATE GRID SICHUAN ELE Free format text: FORMER OWNER: CHENGDU HUALIDA ELECTRIC POWER INFORMATION CO., LTD. Effective date: 20140918 Owner name: CHENGDU HUALIDA ELECTRIC POWER INFORMATION CO., LT Effective date: 20140918 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610041 CHENGDU, SICHUAN PROVINCE TO: 641301 ZIYANG, SICHUAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140918 Address after: 641301 Ziyang City, Sichuan province Yanjiang District No. 456 city road three Patentee after: ZIYANG POWER SUPPLY COMPANY OF STATE GRID SICHUAN ELECTRONIC CORPORATION Patentee after: Chengdu Hualida Electric Power Information Co., Ltd. Address before: No. 5 high tech Zone Gaopeng road in Chengdu city of Sichuan Province in 610041 Patentee before: Chengdu Hualida Electric Power Information Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20170415 |