CN204440625U - A kind of GPRS concentrator carrying relay function - Google Patents

Abstract

The utility model discloses a GPRS concentrator with relay function, comprising a concentrator body and a detachable GPRS module; the concentrator body includes a carrier module, a CPU module, a power supply module, a display module, an RS232 interface, an RS485 interface, Power output interface and shell; detachable GPRS module includes SIM card, GPRS antenna, CPU module, RS485 interface, power interface and shell. As an independent device, the GPRS module can be disassembled from the concentrator, installed separately in an area with good wireless signal, and connected to the concentrator body through a cable to obtain working power and communication data. The concentrator can be installed in areas with weak wireless signals, and can obtain sufficient signal strength, which solves the problem that the concentrator does not go online due to weak wireless signals; when the wireless signal strength is good enough, the GPRS module does not need to be disassembled, and can be integrated with the concentrator body Constitute an integrated installation, easy to use.

Description

A GPRS concentrator with relay function

technical field

The utility model belongs to the technical field of automatic meter reading in electric power systems, in particular to a GPRS concentrator with relay function.

Background technique

With the rapid development of electric power automation, the application of power consumption information collection system with automatic meter reading and remote control functions of electric energy meters is becoming more and more extensive. GPRS concentrator is the key equipment of power consumption information collection system. The concentrator is a kind of automatic meter reading equipment. The uplink communication (communication with the main station) generally adopts GPRS communication method, and the downlink communication (communication with the electric energy meter) can adopt various methods such as power line carrier, RS485, and micro-power wireless. The concentrator automatically reads the energy meter data through the power line carrier, and then uploads the energy meter data to the master station through GPRS communication.

In order to achieve a good meter reading effect, the concentrator must be installed on the low voltage side of the transformer. Limited by land resources, distribution transformers are installed in the basement. Then the concentrator must also be installed in the basement, and the GPRS signal strength in the basement is not good, or even has no signal, which causes the problem of unstable or even unsuccessful communication between the concentrator and the master station. Scattered locations and unsuitable for other means of communication.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a GPRS concentrator with its own relay function, which not only has the functions of meter reading and data uploading of the traditional GPRS concentrator, but also can be used in basements where the GPRS signal strength is insufficient or even without GPRS. The area of the signal is in normal operation, using the GPRS communication method to exchange data with the master station.

The utility model is achieved through the following technical solutions:

A GPRS concentrator with relay function, including a concentrator body and a detachable GPRS module;

The concentrator body includes a carrier module (which can be replaced with a micro-power wireless module), a CPU module, a power supply module, a display module, an RS232 interface, an RS485 interface, a power output interface and a shell;

The carrier module, the display module, the RS232 interface, and the RS485 interface are all bidirectionally connected with the CPU module,

The power supply module supplies power to each module;

The power output interface is installed on the concentrator body and can supply power to the detachable GPRS module;

Each of the above modules is placed inside the shell;

The detachable GPRS module includes a SIM card, a GPRS antenna, a CPU module, an RS485 interface, a power supply interface and a shell, and can operate independently;

Each part in the detachable GPRS module is placed inside the shell, and the power interface in the GPRS module can be connected with the power output interface on the concentrator body or connected with an external power supply to supply power for each part in the GPRS module; The GPRS module performs data interaction with the concentrator body through the RS485 interface, and the GPRS module can be directly inserted into the concentrator body, or can be connected with the concentrator body through a communication line.

The utility model has the advantages of:

The GPRS module can be used as an independent device, which can be disassembled from the concentrator, installed separately in the area with good wireless signal, and connected to the concentrator body through cables to obtain working power and communication data. Therefore, the concentrator can be installed in areas with weak wireless signals, and can obtain sufficient signal strength, which solves the problem that the concentrator cannot go online due to weak wireless signals.

When the wireless signal strength is good enough, the GPRS module does not need to be disassembled, and it can be installed integrally with the concentrator body, which is convenient for application.

The independent and detachable design of the GPRS module realizes the function of the concentrator's own relay. When the relay is not needed, it is consistent with the application of the traditional GPRS concentrator.

Description of drawings

Fig. 1 is a functional block diagram of the utility model.

Figure 2 is a schematic diagram of the electrical connection of the utility model.

Fig. 3 is a schematic diagram of the relay application of the present invention.

Detailed ways

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

As shown in Fig. 1, the utility model provides a GPRS concentrator with relay function. The concentrator is composed of processor CPU, power supply circuit, menu keyboard module, memory, serial interface, remote signaling circuit, GPRS module, meter reading module and other modules.

In this embodiment, the CPU module adopts a 32-bit RISC embedded controller, which has low power consumption, rich interfaces, and easy expansion of other functions.

In this embodiment, the meter reading module may be a carrier meter reading module, may also be a micro-power wireless meter reading module, or may be a multi-channel RS485 meter reading module. The meter reading module can read thousands of meters, and supports DL/T645-1997 and DL/T645-2007 protocols, as well as other common protocols.

In this embodiment, the storage system is composed of large-capacity FLASH and SDRAM. SDRAM has fast speed and large capacity, and can complete the interactive processing of a large amount of data with the CPU, as well as temporary storage, but it cannot save data after power failure. FLASH memory is small in size, data will not be lost when power is off, and its storage performance is safe and reliable. After the meter reading module reads the electric energy data of the electric energy meter, after calculation by the CPU and SDRAM, the data to be stored is stored in the FLASH for storage, and the master station reads or waits for the concentrator to upload the data to the master station.

In this embodiment, the concentrator has a large-sized liquid crystal interface and a simple keyboard, and is easy to operate and maintain.

In this embodiment, the concentrator is equipped with a remote signaling interface. In addition to the meter reading function, it can also monitor the status of the external switch and upload the status change to the master station in time.

In this embodiment, as shown in FIG. 2 , the GPRS module can operate independently. The module integrates the GPRS-MODEM circuit and has a DC24V power input interface. It can operate normally through the power supply of the external power supply, and complete functions such as dialing, connecting with the master station, and sending heartbeat. The module also has a RS485/RS232 serial interface. The concentrator body not only supplies power to the module through DC24V, but also performs data interaction with the module through RS485. The concentrator sends the data to the module through RS485, and the module sends the data to the master station through the GPRS signal. The GPRS module receives the command from the master station, and then sends the command to the concentrator through RS485.

In this embodiment, as shown in Figure 3, since the GPRS module can operate independently and adopts a detachable design, the GPRS module can be removed in an area with poor signal, and the module can be installed in an area with good signal. The cable obtains power and interacts with the concentrator through the communication line to achieve the purpose of obtaining GPRS signals without relaying. The distance between the GPRS module and the concentrator body can reach more than 300 meters. When the concentrator is installed in an area with good signal, the GPRS module can be used directly without dismantling.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the realization of the utility model is not limited by the above-mentioned method, as long as the various improvements of the technical solution of the utility model are adopted, or the utility model can be used without improvement. The ideas and technical proposals that are directly applied to other occasions are all within the protection scope of the present utility model.

Claims (2)

1. carry a GPRS concentrator for relay function, it is characterized in that, comprise concentrator body and dismountable GPRS module;

Described concentrator body comprises carrier module, CPU module, power module, display module, RS232 interface, RS485 interface, power output interface and shell;

Described carrier module, display module, RS232 interface, RS485 interface are all two-way with CPU module to be connected, and described power module is each module for power supply; Described power output interface is arranged on concentrator body, can power for dismountable GPRS module;

Above-mentioned each module is all placed in described enclosure;

Described dismountable GPRS module comprises SIM card, GPRS antenna, CPU module, RS485 interface, power interface and shell, can independent operating;

In described dismountable GPRS module, each several part is all placed in enclosure, and the power interface in described GPRS module can be connected or be connected with external power source, in GPRS module, each several part is powered with described concentrator body power source output interface; Described GPRS module carries out data interaction by RS485 interface and described concentrator body, and described GPRS module can directly be inserted on described concentrator body, also can be connected with described concentrator body by order wire.

2. a kind of GPRS concentrator carrying relay function according to claim 1, is characterized in that, the replaceable one-tenth micro power radio module of described carrier module.