CN202903874U

CN202903874U - Multiuser electric energy meter

Info

Publication number: CN202903874U
Application number: CN 201220504381
Authority: CN
Inventors: 刘其君; 何昂; 陈恢云; 胡宇梁; 周杰
Original assignee: Ningbo Sanxing Electric Co Ltd
Current assignee: Ningbo Sanxing Medical and Electric Co Ltd
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-04-24
Anticipated expiration: 2022-09-29

Abstract

The utility model discloses a multiuser electric energy meter which comprises the multiuser electric energy meter. The multiuser electric energy meter comprises a micro processing unit (1) and a number of single user metering units (2). Each single user metering unit (2) comprises a sampling module (201), a signal processing module (202) and a display module (203), wherein the sampling module (201), the signal processing module (202) and the display module (203) are successively connected. The signal processing module (202) of each single user metering unit (2) is connected with a first ZIGBEE module (204). The micro processing unit (1) is connected with second ZIGBEE modules (3) which respectively carry out communication with each first ZIGBEE module (204). The multiuser electric energy meter provided by the utility model has the advantages of low cost, low power consumption and high secrecy.

Description

Multiuser electric energy meter

Technical field

The utility model relates to the electric energy meter technical field, specifically is a kind of multiuser electric energy meter.

Background technology

Multiuser electric energy meter is the new technology electric energy meter that a plurality of electronic electric energy meters are combined, just can carry out unified metering and management to all users' in a unit or a building power consumption with an electric energy meter, multiuser electric energy meter has changed the in the past situation of the corresponding electric energy meter in a family, not only save cost, also more provide great convenience for the unified management of power department.

The multiuser electric energy meter of prior art comprises a microprocessing unit and a plurality of alone families metering units, microprocessor is positioned at control center, a plurality of Single Subscriber Units lay respectively at a plurality of resident families in the unit, namely each resident family has an alone family metering units that the power consumption of this resident family is measured, the alone family metering units of all resident families in unit all transmits data to microprocessing unit, by control center's unified management, at present, communication modes between alone family metering units and the microprocessing unit has the RS485 communication, the GPRS communication, CAN bus communication etc., RS485 communication and CAN bus communication need to be laid special data line, engineering construction and be that maintenance cost is higher, GPRS communication power consumption is larger, and confidentiality is not high.

The utility model content

Technical problem to be solved in the utility model is, provides that cost is lower, power consumption is less, the more much higher user's electric energy meter of confidentiality.

For solving the problems of the technologies described above, the multiuser electric energy meter that the utility model provides, it comprises microprocessing unit and a plurality of alone families metering units, described each alone family metering units includes the sampling module that connects successively, signal processing module and display module, sampling module is to the voltage and current real-time sampling, signal processing module multiplies each other the voltage and current that sampling obtains, calculate effective value, active power, reactive power, again through the V/F converter, power transfer is become frequency pulse, then the electricity consumption amount that shows this alone family metering units by display module, the signal processing module of described each alone family metering units all is connected with a ZIGBEE module, microprocessing unit is connected with respectively the 2nd ZIGBEE module with each ZIGBEE module communication, and each ZIGBEE module transmits data to the 2nd ZIGBEE module by the ZIGBEE Radio Transmission Technology.

After adopting above structure, the utility model compared with prior art has advantages of following:

Alone family metering units and microprocessing unit adopt the ZIGBEE communication, that is to say by a ZIGBEE module and the 2nd ZIGBEE module of being located at each alone family metering units and carry out data transmission, the 2nd ZIGBEE module receive data also is transferred to microprocessing unit, adopt the ZIGBEE communication just not need to lay special data line, cost is lower, and ZIGBEE is the radio network technique of a kind of short distance, low rate, and it has the characteristics such as low-power consumption, high security, network capacity be larger.

As improvement, it is the integrated chip of CC2430 that described each ZIGBEE module and the 2nd ZIGBEE module all adopt model, CC2430 has integrated ZIGBEE radio-frequency front-end, internal memory and microcontroller at one single chip, only needs peripheral circuit seldom, just can realize transmission-receiving function.

As further improvement, described each signal processing module adopts electric energy metrical special chip RN8209, and its inside carries multiplier, A/D conversion and impulse generator, and chip integration is high, and the electric current and voltage sampling resolution improves.

As further improving, described each display module all adopts 1602 character mode lcd display screens, and 1602 liquid crystal displays are two row up and down, and every row can show 16 words, can show at most the power consumption at 32 families, and the scope of application is wider.

As further improving, it is the PLC of 16C65B that described microprocessing unit adopts model again, and data-handling capacity is strong, and data rate is fast.

Description of drawings

Fig. 1 is the structured flowchart of the alone family metering units of the utility model multiuser electric energy meter;

Fig. 2 is the structured flowchart of the utility model multiuser electric energy meter.

Wherein, 1, microprocessing unit; 2, alone family metering units; 201, sampling module; 202, signal processing module; 203, display module; 204, a ZIGBEE module; 3, the 2nd ZIGBEE module.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in more detail.

By the structured flowchart of Fig. 2 the utility model multiuser electric energy meter as can be known, the utility model multiuser electric energy meter comprises microprocessing unit 1, the 2nd ZIGBEE module 3 and a plurality of alone families metering units 2, by the structured flowchart of alone family shown in Figure 1 metering units as can be known, described each alone family metering units 2 includes the sampling module 201 that connects successively, signal processing module 202, display module 203 and a ZIGBEE module 204, signal processing module is connected with a ZIGBEE module 204 with display module 203 respectively, 201 pairs of voltage and current real-time samplings of sampling module, signal processing module 202 multiplies each other the voltage and current that sampling module 201 samplings obtain by multiplier, calculate effective value, active power, reactive power, again through the AD/DC converter, V/F converter (electric voltage/frequency converter), power transfer is become frequency pulse, then the power consumption that shows this alone family metering units 2 by display module 203, each ZIGBEE module 204 is by data to the two ZIGBEE modules 3 of ZIGBEE Radio Transmission Technology transmission power consumption simultaneously, the 2nd ZIGBEE module 3 receive datas also are transferred to microprocessing unit 1, microprocessing unit 1 is connected with display, make the managerial personnel of control center can check the power consumption of each household, and can realize communicating by letter of microprocessing unit 1 and external unit by communication interface, if certain demand charge is not enough, the power supply that cuts off this user by microprocessing unit 1 pilot relay.

It is the integrated chip of CC2430 that described each ZIGBEE module 203 and the 2nd ZIGBEE module 3 all adopt model.

Described each signal processing module 202 all adopts electric energy metrical special chip RN8209.

Described each display module 203 all adopts 1602 character mode lcd display screens.

It is the PLC of 16C65B that described microprocessing unit 1 adopts model.

Below only use better example with regard to the utility model and made explanation, but can not be interpreted as it is limitations on claims, structure of the present utility model can have other variations, is not limited to said structure.In a word, all various variations of doing in the protection domain of independent claims of the present utility model are all in protection domain of the present utility model.

Claims

1. multiuser electric energy meter, it comprises microprocessing unit (1) and a plurality of alone family metering units (2), described each alone family metering units (2) includes sampling module (201), signal processing module (202) and the display module (203) that connects successively, it is characterized in that: the signal processing module (202) of described each alone family metering units (2) all is connected with a ZIGBEE module (204), and microprocessing unit (1) is connected with respectively the 2nd ZIGBEE module (3) with each ZIGBEE module (204) communication.

2. multiuser electric energy meter according to claim 1, it is characterized in that: it is the integrated chip of CC2430 that described each ZIGBEE module (204) and the 2nd ZIGBEE module (3) all adopt model.

3. multiuser electric energy meter according to claim 1, it is characterized in that: described each signal processing module (202) all adopts electric energy metrical special chip RN8209.

4. multiuser electric energy meter according to claim 1, it is characterized in that: described each display module (203) all adopts 1602 character mode lcd display screens.

5. multiuser electric energy meter according to claim 1 is characterized in that: it is the PLC of 16C65B that described microprocessing unit (1) adopts model.