CN103149399A - Single phase multi-rate electric energy meter - Google Patents
Single phase multi-rate electric energy meter Download PDFInfo
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- CN103149399A CN103149399A CN 201110402495 CN201110402495A CN103149399A CN 103149399 A CN103149399 A CN 103149399A CN 201110402495 CN201110402495 CN 201110402495 CN 201110402495 A CN201110402495 A CN 201110402495A CN 103149399 A CN103149399 A CN 103149399A
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Abstract
A single phase multi-rate electric energy meter comprises a central control unit, an electric energy meter measurement unit, a voltage sampling unit, a current sampling unit, a power source circuit and a storage battery. Signal output ends of the voltage sampling unit and the current sampling unit are connected with the signal input end of the electric energy meter measurement unit. The data output end of the electric energy meter measurement unit is connected with the data input end of the central control unit. The pulse signal output end of the electric energy meter measurement unit is connected with an isolation circuit. The output end of the central control unit is connected with a liquid crystal display (LCD) display module. The control input end of the central control unit is connected with a programming switch. The central control unit is further connected with a clock circuit, a storage device, an infrared communication circuit and a serial communication circuit. The power source output end of the power source circuit is respectively connected with the power source input end of the electric energy meter measurement unit and power source input ends of the central control unit, the serial communication circuit and the clock circuit. The power source output end of the storage battery is respectively connected with the power source input ends of the central control unit and the clock circuit.
Description
Technical field
The technical program belongs to electric power metering device, specifically a kind of single-phase multi-fee.
Background technology
In prior art, due to the limitation of use occasion, such as city, rural area or factory and enterprise etc., meter reading personnel's workload is very large, and, also be not easy to management.In addition because the situation of application scenario is different, stable, the reliability of electric energy meter there is higher requirement.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the technical program proposes a kind of new single-phase multi-fee, and is specific as follows:
A kind of single-phase multi-fee comprises central controller, electric energy meter metering units, voltage sample unit, current sampling unit, power circuit and accumulator;
Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of central controller; The pulse signal output end of electric energy meter metering units is connected with buffer circuit;
The output terminal of described central controller is connected with the LCD display module; The control input end of central controller is connected with program switch; Central controller also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The defeated output terminal of the power supply of described power circuit connects respectively the power input of power input, central controller, serial communication circuit and the clock circuit of electric energy meter metering units;
The power output end of accumulator connects respectively the power input of central controller and clock circuit.
Described electric energy meter metering units is electric energy meter computation chip ADE7755.
Described voltage sample unit is resistor voltage divider network.
Described current sampling unit adopts copper-manganese resistance as sampling resistor.
Described buffer circuit is photoelectrical coupler.
Be connected with photoelectrical coupler between the data output end of described electric energy meter metering units and the data input pin of central controller; Be connected with photoelectrical coupler between described central controller and serial communication circuit; Be connected with photoelectrical coupler between described central controller and infrared communication circuit; Be connected with photoelectrical coupler between the control input end of central controller and program switch.
Interface when described clock circuit connects the school by photoelectrical coupler.
Described central controller also is connected with temperature detecting unit.
This product is comprised of the special metering IC, high-performance monolithic central controller, real-time timepiece chip, data communication interface chip, nonvolatile memory, LCD display, environmental protection battery etc.Electric energy is completed to the conversion of pulse in the special metering IC unit, and energy information is sent to central controller (CPU), central controller is the core devices of complete machine, and it is responsible for processing, and electrical energy pulse counting, management LED or LCD show, read the real-time clock data, data are preserved and safeguard, switch the functions such as period, management communication interface.
Description of drawings
Fig. 1 is the theory diagram of the technical program.
Embodiment
The technical program is further illustrated as follows below in conjunction with accompanying drawing and embodiment:
With reference to figure 1, a kind of single-phase multi-fee comprises central controller, electric energy meter metering units, voltage sample unit, current sampling unit, power circuit and accumulator; Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of central controller; The pulse signal output end of electric energy meter metering units is connected with buffer circuit; The output terminal of described central controller is connected with the LCD display module; The control input end of central controller is connected with program switch; Central controller also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit; The defeated output terminal of the power supply of described power circuit connects respectively the power input of power input, central controller, serial communication circuit and the clock circuit of electric energy meter metering units; The power output end of accumulator connects respectively the power input of central controller and clock circuit.
Described electric energy meter metering units is electric energy meter computation chip ADE7755.Described voltage sample unit is resistor voltage divider network.Described current sampling unit adopts copper-manganese resistance as sampling resistor.Described buffer circuit is photoelectrical coupler.Be connected with photoelectrical coupler between the data output end of described electric energy meter metering units and the data input pin of central controller; Be connected with photoelectrical coupler between described central controller and serial communication circuit; Be connected with photoelectrical coupler between described central controller and infrared communication circuit; Be connected with photoelectrical coupler between the control input end of central controller and program switch.Interface when described clock circuit connects the school by photoelectrical coupler.Described central controller also is connected with temperature detecting unit.
This electric energy meter can satisfy function and the performance requirement of local electric energy meter by the control/calculation function that has ripe circuit module circuit and central controller now.By the programming to central controller, the major function of the electric energy meter that this is routine is as follows:
1. electric energy time-sharing measurement
Three kinds of rates (peak, flat, paddy), 12 periods, period minimum interval 30 minutes;
Storage comprises each rate energy data of 13 months of this month;
Electric weight unloading (automatic data logging day) date is the integral point time of 0～23 o'clock of 1～28 day;
Meter constant scope: 100～20000imp/kWh;
2. reverse power consumption time-sharing measurement
Power (electric energy) direction is identified automatically, and oppositely electric weight is automatically preserved and is accumulated in simultaneously in forward electric weight counter, automatically records the T.T. of reverse electric weight, reverse zero-time and inverted running.
Support reverse electric weight minute rate record.
Having reverse impulse detects and deixis.
3.RS485 and infrared communication
The RS485 interface of electrical isolation, communications protocol meets the DL/T645-1997 communication protocol.
Modulation type two-way infrared interface, carrier frequency 38KHz, communications protocol meets the DL/T645-1997 communication protocol.
Claims (7)
1. single-phase multi-fee comprises central controller, electric energy meter metering units, voltage sample unit, current sampling unit, power circuit and accumulator;
Be connected signal output part and connect the signal input part of electric energy meter metering units in described voltage sample unit with current sampling unit; The data output end of electric energy meter metering units connects the data input pin of central controller; The pulse signal output end of electric energy meter metering units is connected with buffer circuit;
The output terminal of described central controller is connected with the LCD display module; The control input end of central controller is connected with program switch; Central controller also is connected with clock circuit, storer, infrared communication circuit and serial communication circuit;
The defeated output terminal of the power supply of described power circuit connects respectively the power input of power input, central controller, serial communication circuit and the clock circuit of electric energy meter metering units;
The power output end of accumulator connects respectively the power input of central controller and clock circuit;
Described voltage sample unit is resistor voltage divider network; Current sampling unit is sampling resistor.
2. single-phase multi-fee according to claim 1, is characterized in that described electric energy meter metering units is electric energy meter computation chip ADE7755.
3. single-phase multi-fee according to claim 1, is characterized in that described current sampling unit adopts copper-manganese resistance as sampling resistor.
4. single-phase multi-fee according to claim 1, is characterized in that described buffer circuit is photoelectrical coupler.
5. single-phase multi-fee according to claim 1 is characterized in that being connected with photoelectrical coupler between the data input pin of the data output end of described electric energy meter metering units and central controller; Be connected with photoelectrical coupler between described central controller and serial communication circuit; Be connected with photoelectrical coupler between described central controller and infrared communication circuit; Be connected with photoelectrical coupler between the control input end of central controller and program switch.
6. single-phase multi-fee according to claim 1, interface when it is characterized in that described clock circuit connects the school by photoelectrical coupler.
7. single-phase multi-fee according to claim 1, is characterized in that described central controller also is connected with temperature detecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402495 CN103149399A (en) | 2011-12-07 | 2011-12-07 | Single phase multi-rate electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402495 CN103149399A (en) | 2011-12-07 | 2011-12-07 | Single phase multi-rate electric energy meter |
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| Publication Number | Publication Date |
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| CN103149399A true CN103149399A (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110402495 Pending CN103149399A (en) | 2011-12-07 | 2011-12-07 | Single phase multi-rate electric energy meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124818A (en) * | 2016-08-29 | 2016-11-16 | 新开普电子股份有限公司 | Multi-rate electric energy meter |
| CN111157774A (en) * | 2020-03-10 | 2020-05-15 | 南京立超软件科技有限公司 | Single-phase multi-rate electric energy meter with Bluetooth module |
-
2011
- 2011-12-07 CN CN 201110402495 patent/CN103149399A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124818A (en) * | 2016-08-29 | 2016-11-16 | 新开普电子股份有限公司 | Multi-rate electric energy meter |
| CN106124818B (en) * | 2016-08-29 | 2018-12-18 | 新开普电子股份有限公司 | multi-rate electric energy meter |
| CN111157774A (en) * | 2020-03-10 | 2020-05-15 | 南京立超软件科技有限公司 | Single-phase multi-rate electric energy meter with Bluetooth module |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |