WO2016008272A1

WO2016008272A1 - Multi-channel data transmission base station and remote electricity meter reading system based on same

Info

Publication number: WO2016008272A1
Application number: PCT/CN2014/095718
Authority: WO
Inventors: 周宗仪; 邬晓斌; 吴兆春
Original assignee: 宽兆科技(深圳)有限公司
Priority date: 2014-07-15
Filing date: 2014-12-30
Publication date: 2016-01-21
Also published as: CN204117337U

Abstract

A multi-channel data transmission base station (1) and a remote electricity meter reading system based on the base station (1). The base station (1) adopts wireless communication, and the communication frequency is 230 MHz. The system comprises the base station (1), a wireless collector (4), a 230 MHz wireless terminal (3), and an electricity system data center (2), the working frequency of the 230 MHz wireless terminal (3) being 230 MHz. The wireless collector (4) is connected with the 230 MHz wireless terminal (3) for wirelessly collecting electricity meter data and sending the collected electricity meter data to the 230 MHz wireless terminal (3), and the multi-channel data transmission base station (1) is connected with the electricity system data center (2) for receiving the electricity meter data collected by the wireless collector (4) through the 230 MHz wireless terminal (3) and sending the collected electricity meter data to the electricity system data center (2). The remote electricity meter reading system remotely transmits the electricity meter data by means of the 230 MHz communication frequency of the wireless private network of China Power, so that the higher obstacle diffraction capacity can be obtained, the wide-range coverage can be realized, the operating cost is reduced, and the safety is improved without the public communication network.

Description

Multi-channel digital transmission base station and power remote meter reading system based on the same

Technical field

The present invention relates to the field of communications technologies, and in particular, to a multi-channel digital transmission base station and a power remote meter reading system based on the base station.

Background technique

With the advancement of society and the improvement of production and living standards, electricity has penetrated into our daily production and life. Traditional manpower meter reading is a time-consuming and laborious task for both power users and power suppliers. In order to solve this problem, power remote meter reading solutions have emerged. At present, the mainstream remote meter reading solutions need to rely on the operator's GPRS/GSM network or TCP/IP and other public communication means, which brings many problems:

1. Using public communication networks, security is poor.

2. The network operation cost is high, and it is necessary to pay a large number of terminals for GPRS Internet access.

3. Unable to take advantage of the 230MHz spectrum resource advantage of power-specific authorization.

technical problem

The technical problem to be solved by the present invention is to provide a multi-channel digital transmission base station and a power remote meter reading system based on the base station, and use the 230 MHz communication frequency of the China Power Wireless Private Network for remote transmission of meter data.

Technical solution

The present invention is implemented as follows:

A multi-channel digital transmission base station includes:

a duplexer connected to an antenna; the antenna operates at a frequency of 230 MHz;

a power amplifier having an output connected to the duplexer;

a low noise amplifier having an input connected to the duplexer;

a combiner having an output connected to an input of the power amplifier;

a splitter having an input coupled to an output of the low noise amplifier;

a channel allocation module, wherein an input end is connected to an output end of the splitter, and an output end is connected to an input end of the combiner;

a signal modulation and demodulation module connected to the channel allocation module;

A processor is coupled to the signal modulation and demodulation module.

Further, the multi-channel digital transmission base station further includes: a power supply module, configured to supply power to the processor, the signal modulation and demodulation module, the channel allocation module, the low noise amplifier, and the power amplifier.

Further, the power supply module includes a power module and a backup battery module; the power module is configured to supply power to the processor, a signal modulation and demodulation module, a channel allocation module, a low noise amplifier, and a power amplifier; The module is configured to automatically supply power to the processor, the signal modulation and demodulation module, the channel allocation module, the low noise amplifier, and the power amplifier when the power module is unable to supply power.

Further, the multi-channel digital transmission base station further includes: a satellite positioning module connected to the processor.

A power remote meter reading system based on a multi-channel digital transmission base station, comprising any one of the above multi-channel digital transmission base stations, further comprising a wireless collector, a 230 MHz wireless terminal and a power system data center; and an operating frequency of the 230 MHz wireless terminal 230MHz;

The wireless collector is connected to the 230 MHz wireless terminal, configured to collect meter data by wireless, and send the collected meter data to a 230 MHz wireless terminal;

The multi-channel data transmission base station is connected to the power system data center, and is configured to receive the meter data collected by the wireless collector through the 230 MHz wireless terminal, and send the collected meter data to the power system data. center.

Further, the power remote meter reading system based on the multi-channel digital transmission base station further includes a wired collector;

The wired collector is connected to the 230 MHz wireless terminal, configured to collect meter data by wire, and send the collected meter data to a 230 MHz wireless terminal;

The multi-channel digital transmission base station is connected to the power system data center, and is configured to receive the meter data collected by the wired collector through the 230 MHz wireless terminal, and send the collected meter data to the power system data. center.

Further, the multi-channel digital transmission base station is connected to the power system data center via an Ethernet.

Further, the multi-channel digital transmission base station is connected to the power system data center through an optical fiber.

Beneficial effect

Compared with the prior art, the multi-channel digital transmission base station provided by the present invention and the power remote meter reading system based on the base station use the 230 MHz communication frequency of the China Power Wireless Private Network for remote transmission of meter data, compared with the public communication frequency. Data transmission can obtain stronger obstacle diffraction ability, which can cover a wide range and reduce operating costs. At the same time, the present invention does not require the use of a public communication network, which improves security.

DRAWINGS

FIG. 1 is a schematic diagram of a composition of a multi-channel digital transmission base station according to an embodiment of the present invention;

Figure 2: Schematic diagram of further composition of the above multi-channel base station;

Figure 3: Schematic diagram of the further composition of the above multi-channel base station;

4 is a schematic diagram of a power remote meter reading system based on a multi-channel digital transmission base station according to an embodiment of the present invention;

Figure 5: Schematic diagram of the further composition of the above power remote meter reading system.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, the present invention first provides a multi-channel digital transmission base station 1, which includes a duplexer 107, a power amplifier 105, a low noise amplifier 106, a combiner 103, and a splitter. 104. Channel allocation module 102, signal modulation and demodulation module 101, and processor 109. among them:

The duplexer 107 is connected to the antenna 108, and the antenna 108 operates at a frequency of 230 MHz. The 230MHz communication frequency is the communication frequency of China's electric power wireless private network, which requires authorization to use, is not a public communication frequency, has better reliability and anti-interference, and has higher confidentiality. At the same time, compared with the public communication frequency, 230MHz has stronger obstacle diffraction ability than GPRS or GSM network, and is more suitable for wireless back transmission of the collector for collecting meter data, and the use of the frequency for meshing can reduce multiple channels. The number of digital transmission base stations 1 is beneficial to reduce operating costs.

The output of combiner 103 is coupled to the input of power amplifier 105, and the output of power amplifier 105 is coupled to duplexer 107. The power amplifier 105 can be used to amplify the signal power output from the combiner 103 to enhance the transmit signal of the antenna 108.

The input of low noise amplifier 106 is coupled to duplexer 107, and the input of splitter 104 is coupled to the output of low noise amplifier 106. The low noise amplifier 106 can be used to amplify the received signal of the antenna 108.

The input of the channel allocating module 102 is connected to the output of the splitter 104, the output is connected to the input of the combiner 103, the signal modulation and demodulation module 101 is connected to the channel assignment module 102, and the processor 109 and the signal The modulation and demodulation module 101 is connected. The signal modulation and demodulation module 101 can be configured to modulate the baseband signal of the processor 109 into a radio frequency signal and then transmit it to the channel assignment module 102, which then selects the appropriate channel and transmits the radio frequency signal to the combiner. 103, and transmitting the radio frequency signal received by the splitter 104 to the signal modulation and demodulation module 101, and then demodulating the radio frequency signal into a baseband signal by the signal modulation and demodulation module 101, and transmitting the same to the processing. 109. The channel allocation module 102 has four output channels and eight input channels, supporting 4-channel uplink and 8-channel downlink.

As shown in FIG. 2, the multi-channel digital transmission base station 1 may further include a power supply module 110 for supplying power to the processor 109, the signal modulation and demodulation module 101, the channel allocation module 102, the low noise amplifier 106, and the power amplifier 105.

The power supply module 110 may further include a power module 110a and a backup battery module 110b. The power module 110a is configured to supply power to the processor 109, the signal modulation and demodulation module 101, the channel allocation module 102, the low noise amplifier 106, and the power amplifier 105; The module 110b is configured to automatically power the processor 109, the signal modulation and demodulation module 101, the channel allocation module 102, the low noise amplifier 106, and the power amplifier 105 when the power module 110a is not powered. The backup battery module 110b can provide backup power for the multi-channel digital transmission base station 1 to ensure stable operation of the base station.

As shown in FIG. 3, the multi-channel digital transmission base station 1 may further include a satellite positioning module 111, and the satellite positioning module 111 is connected to the processor 109. The satellite positioning module 111 can perform satellite positioning on the base station, thereby having positioning management capability for the base station. The satellite positioning module 111 can adopt a GPS or Beidou satellite positioning module.

As shown in FIG. 4, the present invention also provides a power remote meter reading system based on a multi-channel data transmission base station 1. The system includes any of the multi-channel digital transmission base stations 1 as described above, and further includes a wireless collector 4, a 230 MHz wireless terminal 3, and a power system data center 2. Among them, the operating frequency of the 230 MHz wireless terminal 3 is 230 MHz. The wireless collector 4 is connected to the 230 MHz wireless terminal 3 for wirelessly collecting the data of the electricity meter 6 and transmitting the collected electricity meter data to the 230 MHz wireless terminal 3. The multi-channel digital transmission base station 1 is connected to the power system data center 2 for receiving the meter data collected by the wireless collector 4 through the 230 MHz wireless terminal 3, and transmitting the collected meter data to the power system data center 2. The technician can monitor the electricity meter 6 of each area managed by the power system data center 2 in real time through the power system data center 2.

As shown in FIG. 5, the power remote meter reading system based on the multi-channel digital transmission base station 1 may further include a wired collector 5. The wired collector 5 is connected to the 230 MHz wireless terminal 3 for collecting the data of the electricity meter 6 by wire and transmitting the collected electricity meter data to the 230 MHz wireless terminal 3. The multi-channel digital transmission base station 1 is connected to the power system data center 2 for receiving the meter data collected by the cable collector 5 through the 230 MHz wireless terminal 3, and transmitting the collected meter data to the power system data center 2. The multi-channel digital transmission base station 1 can be connected to the power system data center 2 via Ethernet. On the transmission medium, the multi-channel digital transmission base station 1 can be connected to the power system data center 2 via optical fibers.

The basic working mode of the power remote meter reading system based on the multi-channel digital transmission base station 1 provided by the present invention is summarized as follows: the cable collector 5 or the wireless collector 4 collects the data of the electricity meter 6 and then transmits it to the 230 MHz wireless terminal 3, The 230 MHz wireless terminal 3 then collects the meter data into the multi-channel digital transmission base station 1, and then the multi-channel digital transmission base station 1 transmits the meter data to the power system data center 2 via Ethernet or optical fiber. It is used to adopt a dedicated communication frequency of 230MHz, and the frequency has a strong obstacle diffraction capability. Therefore, the deployment of the ionization remote meter reading system by the present invention can greatly reduce the number of multi-channel digital transmission base stations 1 and reduce the cloth. Network and operating costs. It is not difficult to understand that in the power remote meter reading system, according to the number and distribution of the electric meters, there may be multiple cable collectors 5 or wireless collectors 4, and at the same time, 230 MHz wireless terminals 3 may also be multiple, one 230 MHz wireless terminal. 3 can receive meter data of a plurality of wired collectors 5 and/or wireless collectors 4.

The invention can provide an efficient and reliable data transmission hardware device for the remote meter reading network of the power system, and has broad application prospects in the fields of tap water, petroleum, forestry, environmental monitoring, etc. while obtaining spectrum authorization or slight modification. .

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A multi-channel digital transmission base station, comprising:

a duplexer connected to an antenna; the antenna operates at a frequency of 230 MHz;

a power amplifier having an output connected to the duplexer;

a low noise amplifier having an input connected to the duplexer;

a combiner having an output connected to an input of the power amplifier;

a splitter having an input coupled to an output of the low noise amplifier;

a channel allocation module, wherein an input end is connected to an output end of the splitter, and an output end is connected to an input end of the combiner;

a signal modulation and demodulation module connected to the channel allocation module;

A processor is coupled to the signal modulation and demodulation module.
The multi-channel digital transmission base station according to claim 1, further comprising: a power supply module, configured to supply power to the processor, the signal modulation and demodulation module, the channel allocation module, the low noise amplifier, and the power amplifier.
The multi-channel digital transmission base station according to claim 2, wherein the power supply module comprises a power module and a backup battery module; and the power module is configured to allocate the channel, the signal modulation and demodulation module, and the channel The module, the low noise amplifier, and the power amplifier are powered; the backup battery module is configured to automatically supply the processor, the signal modulation and demodulation module, the channel allocation module, the low noise amplifier, and the power amplifier when the power module is unable to supply power. .
The multi-channel digital transmission base station of claim 1 further comprising: a satellite positioning module coupled to said processor.
A power remote meter reading system based on a multi-channel digital transmission base station, comprising the multi-channel digital transmission base station according to any one of claims 1 to 4, further comprising a wireless collector, a 230 MHz wireless terminal and a power System data center; the operating frequency of the 230 MHz wireless terminal is 230 MHz;

The wireless collector is connected to the 230 MHz wireless terminal, configured to collect meter data by wireless, and send the collected meter data to a 230 MHz wireless terminal;

The multi-channel data transmission base station is connected to the power system data center, and is configured to receive the meter data collected by the wireless collector through the 230 MHz wireless terminal, and send the collected meter data to the power system data. center.
The power remote meter reading system of claim 5, further comprising a wired collector;

The wired collector is connected to the 230 MHz wireless terminal, configured to collect meter data by wire, and send the collected meter data to a 230 MHz wireless terminal;

The multi-channel digital transmission base station is connected to the power system data center, and is configured to receive the meter data collected by the wired collector through the 230 MHz wireless terminal, and send the collected meter data to the power system data. center.
The power remote meter reading system of claim 5 wherein said multi-channel data transmission base station is coupled to said power system data center via an Ethernet.
The power remote meter reading system of claim 5 wherein said multi-channel digital transmission base station is coupled to said power system data center via an optical fiber.