CN209785240U - Power consumption information acquisition system - Google Patents
Power consumption information acquisition system Download PDFInfo
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- CN209785240U CN209785240U CN201920606306.XU CN201920606306U CN209785240U CN 209785240 U CN209785240 U CN 209785240U CN 201920606306 U CN201920606306 U CN 201920606306U CN 209785240 U CN209785240 U CN 209785240U
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Abstract
The utility model discloses a power consumption information acquisition system, which comprises a data acquisition unit for acquiring the data of a power terminal installed in a basement, and a data communication terminal for transmitting the acquired data of the power terminal to the data communication terminal by using a wireless public network; the data communication terminal is arranged in an area with wireless public network signals, and further comprises a relay device for realizing communication between the data acquisition device and the data communication terminal, wherein the relay device comprises a first power line carrier modem arranged at one end of the data acquisition device and a second power line carrier modem arranged at one side of the data communication terminal. The utility model discloses in owing to adopted relay, can be with the data collection station who is located no wireless public network signal department and set up the data communication terminal communication that has wireless public network region, realize the power consumption information acquisition system at no dead angle.
Description
Technical Field
The utility model relates to a communication relay field, especially a power consumption information acquisition system has adopted wireless relay in this system.
Background
The improvement of the smart power grid comprises the collection of power utilization information. The communication of the power utilization information collection is divided into long-range communication and short-range communication, the long-range communication adopts a wireless public network (2G/3G/4G), the short-range communication generally adopts RS232 or RS485 asynchronous communication or RJ45 interface communication, the power utilization information in an area (a station area) is collected by the short-range communication and is gathered together, and then the power utilization information in the area is sent to a background by the public network. Generally speaking, although the technology is mature, the technology is limited by the installation environment, most basements in cities do not have wireless public network signals, but power distribution rooms are installed in the basements, and the basements do not often have the public network signals due to the restriction of geographic environment, so that the installed power terminals cannot be connected with background servers.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an in to present power consumption information acquisition system, because do not have wireless public network signal around the electric power terminal equipment of installing in the distribution room, can not provide a power consumption information acquisition system through wireless public network and backstage communication not enough, this system transfers the signal that does not have the electric power terminal equipment of wireless public network signal department to the backstage through relay.
The utility model discloses a realize that the technical scheme that its technical purpose adopted is: a power utilization information acquisition system comprises a data acquisition unit for acquiring data of a power terminal installed in a basement, and a data communication terminal for transmitting the acquired data of the power terminal to the data communication terminal by using a wireless public network; the data communication terminal is arranged in an area with wireless public network signals, and further comprises a relay device for realizing communication between the data acquisition device and the data communication terminal, wherein the relay device comprises a first power line carrier modem arranged at one end of the data acquisition device and a second power line carrier modem arranged at one side of the data communication terminal.
The utility model discloses in owing to adopted relay, can be with the data collection station who is located no wireless public network signal department and set up the data communication terminal communication that has wireless public network region, realize the power consumption information acquisition system at no dead angle.
Further, in the above power consumption information collecting system: the collector and the first power line carrier modem are integrated together to form a data collection communication end; the data acquisition communication end comprises an M4 inner core and a master control chip internally provided with SOC and WDG of an HPLC baseband; physical interfaces for facilitating HPLC communication and power lines for sending HPLC carrier signals to and receiving HPLC carrier signals from a power grid, an ethernet interface having at least one RJ45 port for facilitating connection to at least one power terminal.
Further, in the above power consumption information collecting system: the data acquisition communication end also comprises an RS232 interface which is conveniently connected with a PC and used for local debugging.
Further, in the above power consumption information collecting system: the data communication terminal and the second power line carrier modem are integrated to form a data communication unit; the data communication unit comprises an M4 inner core and a main control chip internally provided with SOC and WDG of an HPLC baseband; physical interfaces of the power line and HPLC communication for conveniently sending the HPLC carrier signal to the power grid and receiving the HPLC carrier signal of the power grid; used for transmitting signals received by the HPLC to a GPRS/3G/4G module in the background.
Further, in the above power consumption information collecting system: the data communication unit also comprises an RS232 interface which is convenient to be connected with a PC and used for local debugging.
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
Fig. 1 is a structural block diagram of the electrical information acquisition system of the present invention.
Fig. 2 is the utility model discloses data acquisition communication end structure chart.
Fig. 3 is a diagram of the structure of the data communication unit of the present invention.
Fig. 4 is the utility model discloses power consumption information acquisition system main control chip structure chart.
Detailed Description
Embodiment 1, this embodiment is an electrical information collection system without dead space, and a relay device is used to transmit signals of a data concentrator installed in a basement or other areas without wireless public networks or areas with poor wireless public network signals to a data communication terminal installed in a third building or other places with wireless public network signals. As shown in fig. 1, a data collector collects data of a power terminal, such as information of some electric energy, quality of electric signals, and the like, because the power terminal is generally installed in a power distribution cabinet and located in a basement of a house, there is generally no wireless public network signal or the wireless public network signal is very weak, and the collected data cannot be directly transmitted to a background by using GRRS or other wireless communication methods, a relay device is adopted, because the relay device is a power system, in order to save cost, the data collected by the data collector is transmitted to a data communication terminal installed in an area with better wireless public network signal by using a power line carrier communication method, the data communication terminal transmits the data to the background through the wireless public network, as shown in fig. 1, the relay device is a power line carrier communication system, the communication protocol used in this embodiment is HPLC, and the relay apparatus realizes bidirectional communication (duplex communication) using MODEMs (MODEMs) at both ends. In other electricity consumption information acquisition systems, microstrip communication is also adopted to realize that data acquired by the data concentrator is concentrated to a data communication terminal arranged in an area with better wireless public network signals.
In practice, in this embodiment, the relay device is integrated with the data collector or the data communication terminal on both the data collector side and the data communication terminal side to form an SOC (System on Chip, which is also called System on Chip, meaning that it is a product, and is an integrated circuit with a special purpose, which contains the complete System and has all the contents of embedded software). In this embodiment, a chip with a model of DM750STD is used on the side of the data collector to implement data collection and communication protocol formation, a chip with a model of DM750CCO is used on the side of the data communication terminal to implement communication with the data collector by using an HDLC protocol and communication with a background by using a public network, for representing the difference, the side of the data collector is called a data collection communication terminal, the side of the data communication terminal is called a data communication unit, the core of the data collection communication terminal is a chip with a model of DM750STD, and the core of the data communication unit is a chip with a model of DM750 CCO.
In this embodiment, the SOC of the data acquisition communication terminal is as shown in fig. 2, DM750 STA is an M4 core, an SOC main control chip with an HPLC baseband built therein, where the HPLC communication rate is 100Kbps ~ Mbps, the maximum operating speed is 200MHZ, and the DM750 STA chip further integrates FLASH 1Mbyte and SRAM 1Mbyte, and has a built-in independent WDG to ensure stable and reliable operation of the system.
HDLC above- -bit oriented synchronization protocol High Level Data Link Control. HDLC is a typical representative of a bit-oriented data link control protocol, the protocol does not depend on any character coding set, data messages can be transmitted transparently, a '0 bit insertion method' for realizing transparent transmission is easy to realize by hardware, full duplex communication is realized, the data link transmission efficiency is higher, all frames adopt CRC check to carry out sequential numbering on information frames, the missing or duplication can be prevented, the transmission reliability is high, the transmission control function is separated from the processing function, and the flexibility is higher.
As shown in fig. 3, the data communication unit, like the data acquisition communication end, also employs a main control chip DM750CCO, where the main control chip DM750CCO is also an M4 kernel, an SOC main control chip with an HPLC baseband built therein, an HPLC communication rate of 100Kbps ~ 2Mbps, a maximum operating speed of 200MHZ, FLASH 2Mbyte, SRAM 1Mbyte, and a built-in independent WDG to ensure stable and reliable operation of the system, at the data communication end, the main control chip DM750CCO and a peripheral circuit implement an interface with the public network, i.e., a GPRS/3G/4G module interface, for transmitting signals received by HPLC to a background (main station).
In this embodiment, both the main control chip DM750 STA of the data collection communication terminal and the main control chip DM750CCO of the data communication unit have substantially the same structure, except that different software is stored in the memory, one terminal converts data received on the ethernet into an HPLC protocol frame and transmits the HPLC protocol frame to the data communication unit through the relay of the power line carrier communication, or obtains information from the data communication unit by using the power line carrier communication, and the other terminal obtains information from the data collection communication terminal through the power line carrier communication and transmits the information from the public network.
Block diagrams of DM750 STA and DM750CCO are shown in figure 4,
1: core 32-bit ARM Cortex M4, 512KBYTE SRAM, 1Mbyte FLASH.
2: the method comprises the following steps of built-in CLOCK management, POR power supply management, RESET RESET management and LVD low voltage detection.
3: and a WDG watchdog is arranged in the system to ensure stable operation.
4: the physical layer of HPLC, PLC PHY and PLC FAE are built in.
5: one-way ADC, 2I 2C buses, 1 SPI bus interface, 4 UART asynchronous serial ports and 4-way PWM output.
6: the encryption engine with CRC check, SHA, AES and the like is provided.
Claims (5)
1. A power utilization information acquisition system comprises a data acquisition unit for acquiring data of a power terminal installed in a basement, and a data communication terminal for transmitting the acquired data of the power terminal to the data communication terminal by using a wireless public network; the method is characterized in that: the data communication terminal is arranged in an area with wireless public network signals, and further comprises a relay device for realizing communication between the data acquisition device and the data communication terminal, wherein the relay device comprises a first power line carrier modem arranged at one end of the data acquisition device and a second power line carrier modem arranged at one side of the data communication terminal.
2. The electricity consumption information collection system according to claim 1, characterized in that: the collector and the first power line carrier modem are integrated together to form a data collection communication end; the data acquisition communication end comprises an M4 inner core and a master control chip internally provided with SOC and WDG of an HPLC baseband; physical interfaces for facilitating HPLC communication and power lines for sending HPLC carrier signals to and receiving HPLC carrier signals from a power grid, an ethernet interface having at least one RJ45 port for facilitating connection to at least one power terminal.
3. The electricity consumption information collection system according to claim 2, wherein: the data acquisition communication end also comprises an RS232 interface which is conveniently connected with a PC and used for local debugging.
4. The electricity information collection system according to claim 1 or 2, wherein: the data communication terminal and the second power line carrier modem are integrated to form a data communication unit; the data communication unit comprises an M4 inner core and a main control chip internally provided with SOC and WDG of an HPLC baseband; physical interfaces of the power line and HPLC communication for conveniently sending the HPLC carrier signal to the power grid and receiving the HPLC carrier signal of the power grid; used for transmitting signals received by the HPLC to a GPRS/3G/4G module in the background.
5. The electricity consumption information collection system according to claim 4, wherein: the data communication unit also comprises an RS232 interface which is convenient to be connected with a PC and used for local debugging.
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| CN201920606306.XU CN209785240U (en) | 2019-04-29 | 2019-04-29 | Power consumption information acquisition system |
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| CN201920606306.XU CN209785240U (en) | 2019-04-29 | 2019-04-29 | Power consumption information acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949564A (en) * | 2019-04-29 | 2019-06-28 | 深圳芯珑电子技术有限公司 | A kind of power information acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949564A (en) * | 2019-04-29 | 2019-06-28 | 深圳芯珑电子技术有限公司 | A kind of power information acquisition system |
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