CN205247603U - Solve communication extension terminal of power consumption information collection system up channel blind area - Google Patents

Abstract

The utility model relates to a communication relay terminal for solving the signal blind area of an uplink channel in an electricity collection system, comprising a virtual remote communication unit, a controller, a 4-FSK modem, a 230 digital transmission radio station and a switching power supply; the controller includes protocol interpretation Unit ("AT command set" and "Q/GDW? 1376.3-2013" protocol interpretation) and protocol forwarding unit. The utility model adopts the 230 private network frequency band for wireless point-to-point communication to replace the GPRS data communication in the blind area of the mobile public network signal in some remote areas. Because the 230 private network wireless communication is convenient to set up, the cost is greatly reduced compared with the GPRS base station, which can effectively solve some problems such as mountainous areas. , borders and other signal blind areas or the power collection terminal copying problems in areas that need to shield the signal of the mobile public network.

Description

A communication extension terminal that solves the blind area of the uplink channel of the power consumption information collection system

technical field

The utility model relates to a communication extension terminal, in particular to a communication extension terminal for electric power wireless private network.

Background technique

According to the accumulation of experience in the use of electricity information collection terminals nationwide, in some GPRS (General Packet Radio Service) signal blind areas such as mountainous areas and border areas and areas that need to shield the mobile public network signal, due to uplink communication The channel is not smooth, and the data collected by the electricity consumption information collection terminal cannot be automatically read by the system. The inability to transmit the uplink communication channel will affect the online rate of the entire system on the one hand, and on the other hand, it will force some areas to manually check and copy, which is time-consuming and laborious, and cannot reflect the original intention of promoting the entire power consumption information collection system. The utility model solves the problem that power consumption information cannot be automatically transmitted in the blind area of the GPRS uplink channel by using the power wireless private network wireless communication channel of the power supply company to replace the public network GPRS channel, and using the private network wireless point-to-point communication of the existing base station.

Contents of the invention

The purpose of this utility model is: to solve the problem that the above-mentioned existing terminals cannot automatically transmit power consumption information in the blind area of the GPRS uplink channel, to propose a communication expansion terminal that uses a 230MHz power wireless private network to replace the existing GPRS channel for power consumption information transmission .

In order to solve the above technical problems, the utility model proposes a communication extension terminal that solves the blind area of the uplink channel of the power consumption information collection system. The specific design scheme is as follows:

A communication extension terminal for electric power wireless private network, characterized in that it includes a switching power supply and a sequentially connected virtual telecommunication unit, a controller, a 4-FSK modem (4-phase frequency-shift keying, Frequency-shiftkeying) and 230 digital Transmission station; the switching power supply is connected with the controller, 4-FSK modem and 230 digital transmission station to supply power for the controller, 4-FSK modem and 230 digital transmission station; the power consumption information collection terminal is connected with the communication expansion terminal through the virtual remote communication unit , the virtual remote communication unit sends the power consumption information to the controller, and then the controller processes the power consumption information according to the protocol, and sends the processed power consumption information to the 4-FSK modem for modulation, and finally the 230 digital transmission station receives the The 4-FSK modem modulates the power consumption information and sends the power consumption information to the electric power wireless private network for transmission.

The virtual remote communication unit is connected to the communication interface on the power consumption information collection terminal through double-row pins to receive the signal of power consumption information, and the received signal of power consumption information is converted into a signal that can be processed by the controller through a level conversion circuit and enters the subsequent controller module.

The controller adopts MCULPC812M101JDH20 controller, which includes a protocol interpretation unit and a protocol forwarding unit. The virtual telecommunication unit is connected to the protocol interpretation unit. The protocol interpretation unit receives the power consumption information transmitted by the virtual telecommunication unit, and performs “AT” on the power consumption information. "Instruction set" interpretation or "Q/GDW1376.3-2013" protocol interpretation, the power consumption information after interpretation is transmitted to the protocol forwarding unit, and the power consumption information after interpretation is sent to the 4-FSK modem by the protocol forwarding unit.

The MCULPC812M101JDH20 controller is a 32-bit microcontroller (MCU) with real-time capabilities and 32-bit application capabilities. Because it uses a two-stage pipeline, it can not only reduce power consumption, but also improve performance.

Both the AT command set and the Q/GDW1376.3-2013 protocol are clearly stated in the industry specification, here is only a brief introduction as follows:

The AT command set is sent from the terminal equipment (TerminalEquipment, TE) or data terminal equipment (DataTerminalEquipment, DTE) to the terminal adapter (TerminalAdapter, TA) or data circuit terminal equipment (DataCircuitTerminalEquipment, DCE). The terminal equipment sends AT commands through the terminal adapter to control the mobile station (MobileStation, MS) and interact with GSM network services. Users can control calls, text messages, phonebooks, data services, faxes, etc. through AT commands. Each command in the AT command set starts with the letter "AT", AT is followed by a character string of letters and numbers to indicate the specific function, and the response data packet of the AT command is in it. Whether each instruction executes successfully or not has a corresponding return. For some other unexpected information (such as no signal on the line, etc.), the module will have some corresponding information prompts, and the receiving end will do corresponding processing.

The Q/GDW1376.3-2013 protocol stipulates the interface, functional requirements, and AT command set of the remote communication module of the power user information collection terminal. It is suitable for remote communication modules of GSM, CDMA, PSTN, various 3G, LTE and other standards that respond to AT commands, and is used for the control and interaction of the module unit that the acquisition terminal communicates with the remote master station.

The digital transceiver port of the 4-FSK modem is connected to the protocol forwarding unit in the controller to receive the power consumption information, perform 4-FSK modulation on the power consumption information at a rate of 19.2Kbps, and then transmit the modulated power consumption information To 230 digital radio stations.

The 230 digital transmission station adopts Nissei ND250A radio station, and the 230 digital transmission station is connected to the output terminal of the 4-FSK modem, and sends the power consumption information modulated by the modem to the 230MHz dedicated frequency band in the electric power wireless private network, and communicates with the remote master station.

Digital transmission stations are used for wireless data transmission, and have been widely used in remote control and telemetry of electric power. Digital radio stations marked by digital signal processing and digital modulation have the advantages of high transmission rate, stability and reliability, and long-distance transmission. The Nissei ND250A radio is suitable for various point-to-point and one-to-multipoint wireless data transmission systems, such as power load monitoring, distribution network automation and other systems.

The principle of the utility model is: the controller is used to carry out hardware and software compatible matching for the protocol of the remote communication interface of the electricity information collection terminal. Specifically, the hardware compatibility is implemented through the design of the level conversion module and the double-row pins in the virtual remote communication unit, and the software compatibility of the two protocols is implemented through the protocol unit in the controller. Then, the compatible and matched data packets are unified into the form required by the industry standard and forwarded to the 4-FSK modem. After that, the 4-FSK modem is sent to the 230 digital transmission station for data interaction with the remote master station, so as to solve the problem that the master station cannot communicate with the acquisition terminal in the GPRS signal blind area. The utility model belongs to an improved type in the industry, and has strong pertinence, and relevant applicable systems have clear descriptions of industry norms.

Beneficial effects of the utility model: the utility model uses 230MHz power wireless private network point-to-point communication to replace the existing mobile public network GPRS data communication for power consumption information transmission, ensuring that the power consumption information collection system can still be automatic in some special areas such as GPRS signal blind areas. The reading and receiving of electricity consumption information improves the reading and receiving rate of electricity information in areas where the GPRS uplink channel is unavailable, thereby reducing the burden of manual meter reading.

In addition, because the utility model adopts the 230MHz private network of the power supply company for wireless forwarding, and the wireless communication of the 230 private network is convenient to set up, the cost is significantly lower than that of the GPRS base station, and there is no need to set up a new base station. The communication extension terminal described in this practical information can reduce The overall transformation cost can significantly shorten the construction period and cost, and it can be quickly integrated with the private network communication system of the power supply company, and it is more convenient to use.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a schematic diagram of the circuit structure of the virtual remote communication unit of the present invention.

detailed description

Example

A communication extension terminal of this embodiment that solves the blind area of the uplink channel of the power consumption information collection system has a basic structure as shown in Figure 1, including a virtual telecommunication unit, a controller, a 4-FSK modem, a 230 digital transmission station and a switching power supply; The controller includes a protocol interpretation unit ("AT instruction set" and "Q/GDW1376.3-2013" protocol interpretation), a protocol forwarding unit and a switching power supply. The switching power supply is connected with the controller, 4-FSK modem and 230 digital radio station to supply power for the controller, 4-FSK modem and 230 digital radio station; the virtual remote communication unit, controller, 4-FSK modem and 230 digital radio station in turn sequential connection. The electricity consumption information collection terminal is connected with the communication expansion terminal through the virtual remote communication unit, and the virtual remote communication unit sends the electricity consumption information to the controller, and then the controller processes the electricity consumption information according to the protocol, and sends the processed electricity consumption information to the The 4-FSK modem is used for modulation, and finally the 230 digital transmission station receives the power consumption information modulated by the 4-FSK modem and sends the power consumption information to the electric power wireless private network to communicate with the remote master station.

The controller of the utility model is MCULPC812M101JDH20; it adopts "AT instruction set" and "Q/GDW1376.3-2013" protocol compatibility mode. Modulation and demodulation adopts 4-FSK mode with a rate of 19.2Kbps. The 230 digital radio station is Nissei ND250A radio station, which works in the 230MHz wireless frequency band.

The virtual remote communication unit is connected to the communication interface on the power consumption information collection terminal through double-row pins to receive the signal of power consumption information, and the received signal of power consumption information is converted into a signal that can be processed by the controller through a level conversion circuit and enters the subsequent controller module.

The double row of pins and the level conversion circuit in the virtual remote communication unit are shown in Figure 2. The RXT, TXD and RXD interfaces of the double-row pins are connected to the triode for level conversion, and the converted signal is uniformly input to the level conversion output module, and the converted electrical signal is output to the subsequent controller by the level conversion output module .

The controller adopts MCULPC812M101JDH20 controller, which includes a protocol interpretation unit and a protocol forwarding unit. The virtual telecommunication unit is connected to the protocol interpretation unit. The protocol interpretation unit receives the power consumption information transmitted by the virtual telecommunication unit, and performs “AT” on the power consumption information. "Instruction set" interpretation or "Q/GDW1376.3-2013" protocol interpretation, the power consumption information after interpretation is transmitted to the protocol forwarding unit, and the power consumption information after interpretation is sent to the 4-FSK modem by the protocol forwarding unit.

The digital transceiver port of the 4-FSK modem is connected to the protocol forwarding unit in the controller to receive the power consumption information, perform 4-FSK modulation on the power consumption information at a rate of 19.2Kbps, and then transmit the modulated power consumption information To 230 digital radio stations.

The 230 digital transmission station adopts Nissei ND250A radio station, and the 230 digital transmission station is connected to the output terminal of the 4-FSK modem, and sends the power consumption information modulated by the modem to the 230MHz dedicated frequency band in the electric power wireless private network, and communicates with the remote master station.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (5)

1. A communication extension terminal for electric power wireless private network, characterized in that: comprise switching power supply and virtual remote communication unit, controller, 4-FSK modem and 230 digital transmission stations connected in sequence; switching power supply and controller, 4 - The FSK modem is connected to the 230 digital radio station to supply power for the controller, 4-FSK modem and 230 digital radio station; the input terminal of the communication expansion terminal is the input terminal of the virtual remote communication unit, and the input terminal of the communication expansion terminal receives power consumption information , the virtual remote communication unit sends the power consumption information to the controller, and then the controller processes the power consumption information according to the protocol, and sends the processed power consumption information to the 4-FSK modem for modulation, and finally the 230 digital transmission station receives it via 4 - The power consumption information modulated by the FSK modem and sent to the power wireless private network for transmission. 2. The communication extension terminal for electric power wireless private network as claimed in claim 1, characterized in that, the virtual remote communication unit is connected to the communication interface on the power consumption information collection terminal through double-row pins to receive the signal of power consumption information , the received electrical information signal is converted into a signal that can be processed by the controller through the level conversion circuit and enters the subsequent controller module. 3. The communication extension terminal for electric power wireless private network as claimed in claim 1, wherein the controller adopts MCULPC812M101JDH20 controller, the controller includes a protocol interpretation unit and a protocol forwarding unit, a virtual remote communication unit and a protocol interpretation unit The units are connected, and the protocol interpretation unit receives the power consumption information transmitted by the virtual remote communication unit, and interprets the power consumption information by "AT command set" or "Q/GDW1376.3-2013" protocol, and transmits the power consumption information after interpretation to the protocol forwarding unit, and the protocol forwarding unit sends the interpreted power consumption information to the 4-FSK modem. 4. The communication expansion terminal for electric power wireless private network as claimed in claim 1, characterized in that, the digital transceiver port of the 4-FSK modem is connected with the protocol forwarding unit in the controller to receive power consumption information and After the information is modulated by 4-FSK at a rate of 19.2Kbps, the modulated power consumption information is transmitted to the 230 digital transmission station. 5. The communication expansion terminal for the electric power wireless private network as claimed in claim 1, wherein the 230 digital radio stations adopt Nissei ND250A radio station, and the 230 digital radio stations are connected with the output terminal of the 4-FSK modem, and the modem is modulated The final power consumption information is sent to the 230MHz dedicated frequency band in the electric power wireless private network, and communicates with the remote master station.