CN215344095U - Terminal sensing terminal interface equipment of low-voltage transformer area - Google Patents
Terminal sensing terminal interface equipment of low-voltage transformer area Download PDFInfo
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- CN215344095U CN215344095U CN202121565297.8U CN202121565297U CN215344095U CN 215344095 U CN215344095 U CN 215344095U CN 202121565297 U CN202121565297 U CN 202121565297U CN 215344095 U CN215344095 U CN 215344095U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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Abstract
The utility model provides a terminal sensing terminal interface device of a low-voltage distribution room, which comprises independent control circuits such as a CPU circuit, an RS485 serial port communication circuit, an indicator lamp control and filter circuit, a display power supply control circuit, a charging and power supply switching circuit, a hardware anti-shake circuit and the like. The CPU circuit communicates with the tail end sensing terminal through an RS485 communication serial port. The charging and power switching circuit can support the switching between an external direct current power supply and the power supply of the interface equipment body. The man-machine interface of the utility model adopts an independent CPU circuit for control, thus greatly improving the operation efficiency and the memory utilization rate of the tail end sensing terminal; in addition, the interface device adopts a power supply mode of double power supply switching, when external direct current input is lost, a power supply line is switched to a standby power supply in a gapless mode, the power supply protection capability and the operation stability of the interface device are improved, and meanwhile, the interface device adopts an SPI display data output circuit, and the data transmission rate is improved.
Description
Technical Field
The utility model relates to the technical field of power distribution networks, in particular to a terminal sensing terminal interface device for a low-voltage distribution area.
Background
The national grid company provides a power distribution internet of things with wide interconnection of construction and creation equipment, comprehensive state perception, plug and play of equipment, flexible application iteration, efficient resource utilization and quick and intelligent decision making, and aims to create an internationally leading energy internet enterprise. The comprehensive state perception mainly depends on a tail end perception terminal of the low-voltage distribution network, and the tail end perception terminal is mainly used for collecting and measuring electric appliance quantity, switching value and other auxiliary information of the low-voltage distribution network and other sources of basic data. The low-voltage distribution network as the last kilometer is in a monitoring blind area for a long time, and the realization of comprehensive state perception depends on a large number of terminal perception terminals installed on the site. Therefore, the reliability and stability of the operation of the terminal sensing terminal determine whether the low-voltage distribution network state is sensed completely. The stability and reliability of the operation of the end-sensing terminal is a hot spot of research in recent years.
The human-machine interface part is often configured as an end-aware terminal device and is often ignored by researchers. As the terminal sensing terminal equipment, the man-machine interface part comprises important information such as liquid crystal display, key indication and the like, and is an important interface for providing functions such as equipment running state display, construction test, field maintenance and the like.
However, currently, the common terminal sensing terminal device mostly adopts a main control human-computer interface mode from the aspects of cost saving, easy control and the like, but the control mode has the following disadvantages through long-term equipment field operation inspection: 1. because the main controller directly controls display, a large number of liquid crystal display programs occupy the load of the controller, and the running speed of the system is seriously influenced; 2. as the complexity of the display program increases, the memory capacity of the control system is occupied, and the memory utilization rate of the system is influenced; 3. the number of the wires extending to the man-machine display interface of the controller is too large, the wires are complex, and hidden danger of burying is introduced for an interference source. 4. The man-machine interface circuit is not added with corresponding anti-interference measures, and the key input and the serial port communication are easily interfered by external interference, such as interference generated by human body static electricity, so that the control system of the tail end sensing terminal is influenced, and the abnormal operation of the tail end sensing terminal is caused. 5. The general interface equipment depends on the influence of an external direct current input power supply, the power supply stability of the interface equipment is poor, and certain influence is brought to the running state test and the field maintenance of the equipment.
Therefore, the existing end sensing terminal and interface device still have the defects in reliability and stability, and need to be improved and improved.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, in order to improve the stability and the anti-interference performance of the identification terminal device, the utility model provides a terminal sensing terminal interface device in a low-voltage transformer area. The interface module has small volume, flexible installation and high integration level, and can realize the functions of liquid crystal display, key, indicator light control and the like. The terminal adopts independent CPU control, communicates with a main CPU through a serial communication port, has seamless switching between a direct current power supply and a standby power supply, and is simple in wiring, so that the stability and reliability of the whole terminal sensing terminal are improved.
In order to achieve the purpose, the utility model provides the following technical scheme: a terminal sensing terminal interface device of a low-voltage transformer area is provided, wherein an independent CPU circuit and an RS485 serial port communication circuit are arranged in the interface device, and the CPU circuit is communicated with a CPU of a terminal sensing terminal through the RS485 serial port communication circuit; the interface equipment is also internally provided with a standby power supply, an external power supply input circuit and a charging and power supply switching circuit, and the standby power supply and the external power supply input circuit are seamlessly switched through the charging and power supply switching circuit; the interface equipment is also internally provided with a thin film key input circuit, and the interface equipment is subjected to key operation through the thin film key input circuit; the interface equipment is also internally provided with an SPI display data output circuit, and data multithread transmission is completed through the SPI display data output circuit; the interface equipment is also internally provided with a display power supply control circuit and a dot matrix liquid crystal display, and the display power supply control circuit is connected with the dot matrix liquid crystal display; the interface equipment is also internally provided with an indicator lamp control and filter circuit and an indicator lamp, and the indicator lamp control and filter circuit controls the indicator lamp to be turned on and turned off.
Further, the output end of the charging and power supply switching circuit is coupled to the CPU circuit, and the input end of the charging and power supply switching circuit is coupled to the output ends of the standby power supply and the external power supply input circuit.
Further, the interface device is connected with an external direct current power supply through an external power supply input circuit.
Further, the interface device further comprises a hardware anti-shake circuit, an output end of the thin film key input circuit is coupled to an input end of the hardware anti-shake circuit, and an output end of the hardware anti-shake circuit is coupled to an input end of the CPU circuit.
Further, the input end of the SPI display data output circuit is coupled to the output end of the CPU circuit, and the output end of the SPI display data output circuit is coupled to the dot matrix liquid crystal display.
Further, the input end of the display power supply control circuit is coupled to the output end of the CPU circuit, and the output end of the display power supply control circuit is coupled to the dot matrix liquid crystal display.
Furthermore, the input end of the indicator light control and filter circuit is coupled to the output end of the CPU circuit, and the output end of the indicator light control and filter circuit is coupled to the indicator light.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the interface device of the utility model adopts an independent CPU circuit for control, and does not occupy the resources of CPU load, memory capacity and the like of the tail end sensing terminal.
(2) The interface device of the utility model adopts the main controller to directly control the display, and the liquid crystal display program does not occupy the control load of the CPU of the end sensing terminal and the utilization rate of the memory, thereby greatly reducing the influence on the control of the CPU of the end sensing terminal and improving the utilization rate of the memory.
(3) The interface device of the utility model adopts the RS485 serial communication differential interface, reduces the quantity of the terminal sensing terminal CPU controlled to the boundary of the human-computer interface, greatly reduces the interference source and improves the interference capability.
(4) The interface equipment adopts a power supply mode of charging and power supply switching, the problem of power getting obstruction of the interface equipment is reduced, the application of the interface equipment is not limited by a field, and the application scenes of the interface equipment are enriched.
(5) The interface equipment adopts SPI bus transmission, has full duplex and synchronous serial, and greatly improves the data transmission rate of the interface equipment.
(6) The interface equipment of the utility model adopts a large number of anti-interference measures, such as an indicator lamp control and filter circuit and a hardware anti-shake circuit, thereby improving the safety and stability of the interface equipment.
(7) The interface equipment of the utility model has the advantages of centralized display power supply control, key control and indicator light display and high integration level.
Drawings
Fig. 1 is a schematic structural diagram of a sensing terminal interface device at the end of a low-voltage transformer area.
Illustration of the drawings: 001. a CPU circuit; 002. an RS485 serial port communication circuit; 003. an SPI display data output circuit; 004. a display power control circuit; 005. a dot matrix liquid crystal display; 006. an indicator lamp control and filter circuit; 007. an indicator light; 008. a standby power supply; 009. an external direct current power supply; 010. a charging and power switching circuit; 011. a thin film key input circuit; 012. hardware anti-shake circuit.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment provides an interface device for a terminal sensing terminal in a low-voltage distribution area, where the interface device includes an independent CPU circuit 001 and an RS485 serial communication circuit 002, and the CPU circuit 001 communicates with the CPU of the terminal sensing terminal through the RS485 serial communication circuit 002, where the CPU circuit 001 includes an arithmetic unit, a cache memory, a reset circuit, a FLASH, an SARM, and other devices, so as to ensure normal operation of the system. Particularly, the CPU circuit 001 communicates with the tail end sensing terminal through the RS485 serial port communication circuit 002, so that the load and the memory capacity of the tail end sensing terminal CPU are not occupied, the operation efficiency of the tail end sensing terminal is improved, and meanwhile, only simple wiring is carried out between the tail end sensing terminal CPU and the interface equipment.
Further, in order to improve the data transmission rate of the interface device, the interface device of this embodiment further includes an SPI display data output circuit 003, one end of the SPI display data output circuit 003 is coupled to the CPU circuit 001, and the other end is coupled to the dot matrix liquid crystal display 005.
Further, in order to reduce the power consumption of the interface device and the voltage transformation of the input power to the dot matrix liquid crystal display 005, the interface device of this embodiment further includes a display power control circuit 004, one end of the display power control circuit 004 is coupled to the CPU circuit 001, and the other end is coupled to the dot matrix liquid crystal display 005, so as to reduce the power consumption and prolong the service life of the dot matrix liquid crystal display 005.
Further, interface device still includes pilot lamp control and filter circuit 006 and pilot lamp 007, and pilot lamp control and filter circuit 006 one end is coupled to CPU circuit 001, and the other end is coupled to pilot lamp 007, and pilot lamp control and filter circuit 006 filters the pilot lamp control signal of following CPU circuit 001 output and controls pilot lamp 007 according to control signal, realizes lighting and extinguishing of pilot lamp 007.
Further, in order to meet the stability of power supply of the interface device, the interface device of this embodiment further includes a standby power supply 008, an external power input circuit, and a charging and power switching circuit 010; the charging and power switching circuit 010 has one end coupled to the CPU circuit 001 and the other end coupled to the standby power 008 and the external power input circuit, and the input end of the external power input circuit is connected to the external dc power source 009; because the installation positions of the end sensing devices are different, once the external direct-current power supply 009 cannot supply power, installation and debugging and equipment maintenance are affected. Through charging and power switching circuit 010, interface device can supply power from outside direct current power supply 009 and seamlessly switch to stand-by power supply 008 to supply power to interface device, prevents to lead to interface device unable use because of the outage.
Furthermore, the interface device further comprises a thin film key input circuit 011 and a hardware anti-shake circuit 012, wherein an input end of the hardware anti-shake circuit 012 is coupled to the thin film key input circuit 011, and an output end of the hardware anti-shake circuit 012 is coupled to the CPU circuit 001, so that the thin film key has low cost and long service life, and the economy of the interface device is improved; the hardware anti-shake circuit 012 performs hardware anti-shake processing on the key information of the membrane keys, filters interference information such as human static electricity, and ensures the reliability of output.
According to the interface equipment of the terminal sensing terminal in the low-voltage transformer area, the interface equipment and the terminal sensing terminal are provided with the independent CPU circuits, so that the interface equipment does not occupy the CPU load and the memory capacity of the main control of the terminal sensing terminal in the using process, the interface equipment and the terminal sensing terminal are connected and wired simply, the number of interference sources caused by wiring is reduced, the influence of the interface equipment on the control of the terminal sensing terminal is greatly reduced, and the operation stability and the reliability of the terminal sensing terminal are improved.
The low-voltage station zone tail end sensing terminal interface equipment has the advantages that the external direct-current power supply input and the standby power supply are arranged, seamless switching can be realized, the power supply stability of the interface equipment is improved, and the influence of the power supply of the interface equipment on installation debugging and equipment maintenance is reduced.
The low-voltage station terminal sensing terminal interface equipment provided by the utility model is provided with the SPI display data output circuit, so that the multithreading SPI data transmission method is provided, the data transmission quantity and the processing quantity are increased, and the data transmission efficiency is improved.
The foregoing merely represents preferred embodiments of the utility model, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides a terminal perception terminal interface equipment in low pressure platform district which characterized in that: the interface equipment is internally provided with an independent CPU circuit (001) and an RS485 serial port communication circuit (002), and the CPU circuit (001) is communicated with a CPU of the tail end sensing terminal through the RS485 serial port communication circuit (002); the interface equipment is also internally provided with a standby power supply (008), an external power supply input circuit and a charging and power supply switching circuit (010), and the standby power supply (008) and the external power supply input circuit are seamlessly switched through the charging and power supply switching circuit (010); the interface equipment is also internally provided with a thin film key input circuit (011), and the interface equipment is subjected to key operation through the thin film key input circuit (011); the interface equipment is also internally provided with an SPI display data output circuit (003), and data multi-thread transmission is completed through the SPI display data output circuit (003); the interface equipment is also internally provided with a display power supply control circuit (004) and a dot matrix liquid crystal display (005), and the display power supply control circuit (004) is connected with the dot matrix liquid crystal display (005); the interface device is also internally provided with an indicator lamp control and filter circuit (006) and an indicator lamp (007), wherein the indicator lamp control and filter circuit (006) controls the indicator lamp (007) to be turned on and turned off.
2. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the output end of the charging and power supply switching circuit (010) is coupled to the CPU circuit (001), and the input end of the charging and power supply switching circuit (010) is coupled to the output ends of the standby power supply (008) and the external power supply input circuit.
3. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the interface device is connected with an external direct current power supply (009) through an external power input circuit.
4. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the interface device further comprises a hardware anti-shake circuit (012), wherein the output end of the thin film key input circuit (011) is coupled to the input end of the hardware anti-shake circuit (012), and the output end of the hardware anti-shake circuit (012) is coupled to the input end of the CPU circuit (001).
5. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the input end of the SPI display data output circuit (003) is coupled to the output end of the CPU circuit (001), and the output end of the SPI display data output circuit (003) is coupled to the dot-matrix liquid crystal display (005).
6. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the input terminal of the display power supply control circuit (004) is coupled to the output terminal of the CPU circuit (001), and the output terminal of the display power supply control circuit (004) is coupled to the dot-matrix liquid crystal display (005).
7. The low-voltage transformer area end sensing terminal interface device of claim 1, wherein: the input end of the indicator light control and filtering circuit (006) is coupled to the output end of the CPU circuit (001), and the output end of the indicator light control and filtering circuit (006) is coupled to the indicator light (007).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121565297.8U CN215344095U (en) | 2021-07-09 | 2021-07-09 | Terminal sensing terminal interface equipment of low-voltage transformer area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121565297.8U CN215344095U (en) | 2021-07-09 | 2021-07-09 | Terminal sensing terminal interface equipment of low-voltage transformer area |
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| Publication Number | Publication Date |
|---|---|
| CN215344095U true CN215344095U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121565297.8U Active CN215344095U (en) | 2021-07-09 | 2021-07-09 | Terminal sensing terminal interface equipment of low-voltage transformer area |
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| CN (1) | CN215344095U (en) |
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- 2021-07-09 CN CN202121565297.8U patent/CN215344095U/en active Active
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