CN201577100U

CN201577100U - Power concentrator

Info

Publication number: CN201577100U
Application number: CN 200920267063
Authority: CN
Inventors: 刘晋梅; 李勇权; 郝松
Original assignee: Shenzhen Kaifa Technology Co Ltd
Current assignee: Shenzhen Kaifa Technology Co Ltd
Priority date: 2009-11-20
Filing date: 2009-11-20
Publication date: 2010-09-08
Anticipated expiration: 2019-11-20

Abstract

The utility model relates to a power concentrator which comprises a power supply and a circuit system, wherein the circuit system works by relying on the power supply, the circuit system further comprises a main processor, a downlink communication part and an uplink communication part, the uplink communication part comprises at least two communication modules, the plurality of modules are in communication and connection with the main processor, and the main processor automatically selects the main processor to conduct communication and connection with one communication module according to the preset sequence so as to realize the uplink communication of the concentrator. The power concentrator can greatly lower the maintenance cost, and improve the safety of the field maintenance operation.

Description

Electric power concentrator

Technical Field

The utility model relates to a communication equipment especially relates to electric power system's communication equipment.

Background

The communication device of the power system comprises a concentrator, which is usually arranged between an electric meter or an electric meter terminal and a power main station and is mainly used for uploading and sending information. The existing concentrator, for example, the one disclosed in chinese patent CN03228204.4, comprises a spread spectrum carrier circuit, the spread spectrum carrier circuit is composed of a single chip, a serial data memory, a spread spectrum carrier integrated circuit, a power amplifier circuit, a coupler, and a triode, the spread spectrum carrier circuit is connected to an output terminal of a serial port conversion chip, an input terminal of the serial port conversion chip is connected to an output terminal of a computer PC104, and an input terminal of the computer PC104 is connected to a telephone line. The data transmission is carried out by utilizing the transmission mode of a telephone network and spread spectrum carriers, and three groups of mutually independent carrier modules are adopted for signal coupling so as to carry out centralized control on the power grid data.

As shown in fig. 1, the conventional concentrator generally includes a power supply 1a and a circuit system 2a powered by the power supply 1a to operate, where the power supply 1a is responsible for converting an external mains supply into a power supply required by the circuit system 2a to operate; the composition of the circuit system 2a in turn typically comprises: a main processor 21a, a downlink communication unit 22a and a GPRS communication unit 23 a. The main processor 21a is a core of the whole concentrator, and is mainly used for processing according to signals received by uplink and downlink, and performing daily data reading, storage and processing; the downlink communication unit 22a is mainly responsible for communication between the concentrator and the electricity meter or the electricity meter terminal, and can select a power carrier communication mode or an RS485 communication mode, and the relationship between the downlink communication unit and the main processor 21a is a slave-to-master relationship; the GPRS communication unit 23a forms an uplink communication channel for communication between the concentrator and the power master, and the main processor 21a is also in a slave-to-master relationship.

It can be seen that the existing uplink communication circuit generally uses a single GPRS communication, because the GPRS communication itself has some technical problems, such as: the problems of unstable contact of the GPRS card slot, inconsistent signal strength of the GPRS, faults of a mobile service main station and the like caused by the working temperature of the GPRS chip, the temperature and the humidity of the field environment cause that the uplink communication of the concentrator frequently drops, so that the communication between the concentrator and the main station is interrupted, and the real-time requirement of the communication of a power system can not be well met.

Moreover, once the existing concentrator is abnormally operated or even stops operating, a specially assigned person is usually required to go to the site to repeatedly power off and re-power on the concentrator and perform maintenance operations such as moving the position of the GPRS communication antenna, which greatly increases the maintenance cost of the system, causes loss to the owner and/or user of the power system such as a power supply office, and also causes danger to the staff who are particularly engaged in the maintenance work because the concentrator is mostly installed in a place with a severe environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a but greatly reduced maintenance cost and improve the electric power concentrator of the security of the maintenance operation at scene.

In order to achieve the above object, the present invention provides an electric power concentrator, which includes a power supply and a circuit system powered by the power supply and operating, wherein the circuit system includes a main processor, a downlink communication part and an uplink communication part, the uplink communication part includes at least two communication modules, the modules are in communication connection with the main processor, and the main processor automatically selects itself to perform communication connection with one of the communication modules according to a predetermined sequence to realize uplink communication of the concentrator.

The uplink communication part comprises a mobile communication module and at least one network communication module.

The mobile communication module is referred to as a GPRS communication module.

The network communication module refers to a wireless network communication module or a wired network communication module.

The wireless network communication module refers to a Wi-Fi communication module, and the wired network communication module refers to an internet communication module.

The uplink communication part also comprises a serial communication module.

The serial communication module is a communication module with RS232 and/or RS485 functions.

Each of the modules includes a microprocessor such that when the main processor is in an abnormal state, each of the modules may be configured to maintain communication of the upstream communication of the power concentrator.

The power supply is provided with an input port of a safe power supply so as to provide a working power supply of the circuit system by externally connecting the safe power supply through the port.

The power supply has an input port for 48VDC power.

Compared with the prior art, the electric concentrator of the utility model has the advantages that by arranging a plurality of uplink communication modules, even under the condition of severe environment, the concentrator can realize communication in a mode, the problem of disconnection of the concentrator is greatly reduced, the concentrator can basically achieve the effect of 'once and for all', once the concentrator is installed on site, the concentrator can be used smoothly, and the maintenance cost of equipment can be reduced; by allowing the use of 48VDC input, the safety of personnel performing field maintenance of the equipment is also improved.

Drawings

Fig. 1 is a block diagram of a conventional power concentrator.

Fig. 2 is a block diagram of an embodiment of the power concentrator of the present invention.

Detailed Description

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The structural block diagram of the embodiment of the power concentrator of the present invention, as shown in fig. 2, includes a power supply 1 and a circuit system 2 powered by the power supply 1 to operate; the composition of the circuit system 2 in turn typically comprises: the system comprises a main processor 21, a downlink communication module 22, a GPRS communication module 23, a serial communication module 24, a Wi-Fi communication module 25 and an Internet communication module 26. Wherein,

power supply 1: the function is basically consistent with that of the power supply 1a in the existing concentrator, however, a 48VDC safety voltage input port is added to provide working power supply for the circuit system 2 by externally connecting a 48VDC safety power supply through the port, so that the safety and maintainability of the whole concentrator are increased;

the main processor 21: the function is substantially identical to the main processor 21a in the existing concentrator;

the downlink communication module 22: the function is basically consistent with that of the downlink communication unit 22a in the existing concentrator;

the GPRS communication module 23: the function is basically consistent with the GPRS communication unit 23a in the existing concentrator, although there are multiple communication modes, the GPRS communication is the default communication mode, but there is a microprocessor inside, so that the GPRS communication module 23 and the main processor 21 form a communication connection, a strict master-slave relationship between the main processor 21 and the GPRS communication module 23 is changed, the GPRS communication module 23 and the main processor 21 are mutually independent to some extent, that is, the GPRS communication module 23 can work independently of, but not necessarily dependent on, the main processor 21: the GPRS communication module 23 serves only as a medium for communication between the concentrator and the master station when the main processor 21 is in a normal state, and the GPRS communication module 23 can operate independently of the main processor 21 when the main processor 21 is in an abnormal state, for example, can receive a remote control signal from the master station independently of the main processor 21.

The serial communication module 24, the serial communication here mainly refers to RS232/RS485 communication, can provide the expanded communication means for the concentrator, the serial communication module 24 and the host processor 21, similar to the above GPRS communication module 23 and the host processor 21, are also a non-strict slave-master relationship, the serial communication module 24 can also be used as the daily debugging interface of the concentrator;

the Wi-Fi communication module 25 may provide an extended communication means for the concentrator, so that the power concentrator may surf the internet through a local area network formed by a dedicated network device of an enterprise or a power supply office, and serve as a backup mode for the communication of the concentrator. The Wi-Fi communication module 25 and the main processor 21, similar to the GPRS communication module 23 and the main processor 21, are also in a non-strict master-slave relationship, which are independent from each other, and can also receive the information of the master station when the main processor 21 is abnormal.

With the popularization and population densification of networks, the internet communication module 26 can cover a network where each concentrator is installed, and uses the internet as an uplink communication means. The internet communication module 26 and the main processor 21, similar to the GPRS communication module 23 and the main processor 21, are also in a non-strict slave-master relationship and are also in a relatively independent working mode, and in the normal mode, the internet communication module 26 is also used as a communication medium between the concentrator and the main station, so as to realize normal transmission of data between the concentrator and the main station.

Adopt the utility model discloses a power concentrator, the electric power system that can construct uses, can be nimble, make things convenient for many, and the following selection step is adopted in general suggestion:

s1: if the concentrator is installed in an enterprise with a local area network, a Wi-Fi communication mode can be preferentially adopted;

s2: if the mobile terminal is in a city or a more modern place, a Wi-Fi communication mode or an Internet communication mode can be preferably adopted, but enterprises such as a private network of a power supply office are generally adopted for the safety of power supply data;

s3: the other places adopt a GPRS communication mode;

s4: when a communication mode has a problem, the concentrator can be automatically switched to a standby communication mode according to internal settings;

s5: when all communication modes have problems and the concentrator is disconnected for a long time, the power supply of the concentrator can be switched to a 48VDC safety power supply on site, and then the maintenance of the concentrator can be carried out.

The above is only a preferred practical embodiment of the present invention, and the protection scope of the present invention is not limited, so that the equivalent structural changes made by using the contents of the specification and the drawings of the present invention, for example, the GPRS communication module 23 is replaced with the communication module of the 3G mobile network; the Wi-Fi communication module 25 is replaced by another wireless network communication module, and the power supply 1 is replaced by a power supply supporting 24VDC, which are all included in the protection scope of the present invention.

Claims

1. A power concentrator comprises a power supply and a circuit system powered by the power supply and working, wherein the circuit system comprises a main processor, a downlink communication part and an uplink communication part, and is characterized in that the uplink communication part comprises at least two communication modules which are in communication connection with the main processor, and the main processor automatically selects the main processor to be in communication connection with one communication module according to a preset sequence so as to realize the uplink communication of the concentrator.

2. The power concentrator of claim 1 wherein the upstream communication section comprises a mobile communication module and at least one network communication module.

3. The power concentrator as claimed in claim 2 wherein the mobile communication module is a GPRS communication module.

4. The power concentrator as claimed in claim 2, wherein the network communication module is a wireless network communication module or a wired network communication module.

5. The power concentrator as claimed in claim 4, wherein the wireless network communication module is a Wi-Fi communication module, and the wired network communication module is an internet communication module.

6. The power concentrator of claim 2 wherein the upstream communication section further comprises a serial communication module.

7. The power concentrator as claimed in claim 6 wherein the serial communication module is a communication module with RS232 and/or RS485 capability.

8. The power concentrator of claim 1 wherein each of the modules includes a microprocessor such that each of the modules is operable to communicate upstream of the power concentrator when the primary processor is in an abnormal state.

9. The power concentrator as claimed in any one of claims 1 to 8, wherein the power supply has an input port for a safety power supply to provide an operating power supply for the circuitry by externally connecting a safety power supply through the input port.

10. A power concentrator according to claim 9 wherein the power supply has an input port for 48VDC power.