CN104459600A - Portable intelligent electronic energy meter field calibration device - Google Patents

Abstract

The invention discloses a portable intelligent electronic energy meter field calibration device. The portable intelligent electronic energy meter field calibration device comprises a box body. A first pulse counter, a second pulse counter, a standard intelligent energy meter, a 9 V direct-current power supply, a load and a leakage protector are arranged in the box body. The first pulse counter is connected with an energy meter to be measured. The second pulse counter is connected with the standard intelligent energy meter. The input end of the standard energy meter is connected with the intelligent energy meter to be measured in series. The output end of the standard energy meter is connected with the load. The leakage protector is connected with the input end of the intelligent energy meter to be measured. The 9 V direct-current power supply supplies power to the first pulse counter and the second pulse counter. The portable intelligent electronic energy meter field calibration device has the advantages of being visual, high in practicability, easy to operate, popular and easy to understand, accurate and rapid in detection and the like.

Description

A portable intelligent electronic energy meter calibration device field

FIELD

[0001] The present invention relates to an electronic energy meter BACKGROUND maintenance tool.

Background technique

[0002] Meter are taking charge is based on the user to pay for electricity, the meter is running properly or not related to the household. Currently, electronic energy meter of its low power consumption, small size, light weight, high precision, anti-theft, wide load, easy installation, etc. Multi-function has been replaced by the original old mechanical energy meter. But the attendant is now illegal to make some small businesses failed meter, which meter security, poor stability, low level of accuracy. Also part of the user default power, without exceeding the rated current of the electricity meter, or some of these factors lead to energy meter disrepair meter measurement inaccuracies.

[0003] The traditional test method for measuring energy metering is to allow users to find a professional electrician remove the meter, customers took their meter to meter specially designed for identification unit or agency of the check meter to test electrical energy table of speed, the whole process there are several major problems: 1, electricians can not run on meter metering is accurate to make a clear judgment; 2, users do not have electricity at this time, seriously affecting the quality of electricity users . That being the case, some users recognize their own power metering "normal" and refused to effect the seizure, obstruct the work of electricians, so we need to show real-time electrician at the site based on strong evidence.

[0004] With the development of science and technology, the instrument on the market currently appears on-site calibration of the meter, although the test can be charged, but the wiring complexity, required to have high-tech personnel to operate, if the outdoor sun is strong, photoelectric sampler is not readily collect meter output pulse signal, and the field calibrator meter is expensive, inadequate protection equipment, easily damaged.

SUMMARY

[0005] The present invention solves the technical problem is to provide a simple, intuitive, easy to understand, the detection accuracy, and efficient portable intelligent electronic energy meter calibration device field.

[0006] To solve the above technical problem, the technical solution by the present invention is: a portable intelligent electronic energy meter field calibration apparatus includes a housing, said housing interior provided with a first pulse counter, the second pulse counter, standard smart meter, 9V DC, load and leakage protection, the first pulse counter is connected with the smart meter under test, the second pulse counter is connected to a standard smart meter, the meter standard input end of the smart meter under test are connected in series, the standard meter output terminal connected to a load, the drain terminal of the input protection device to be tested and the smart meter is connected to a 9V DC power supply and said first pulse counter the second pulse counter to provide power.

[0007] Preferably, the blower load of 1000W.

[0008] Preferably, the first and second pulse counter both pulse counters ⑶D7949A-P12V four cycle digital down counter.

[0009] Preferably, the housing is provided with a conduit opening out cable.

[0010] Preferably, the smart meter is the standard error of the national standard GB / T7215.321 meter qualified technical requirements.

[0011] With the above technical solutions that produced beneficial effects: the present invention facilitates assembly, and intuitive, practical, easy to understand; power customer site can be viewed, so that customers more assured, this last also collected for electricity protection and energy meter is also a great help. If the customer without permission open energy metering device seal were stealing and other covert means of stealing, using this same method can effectively detect, for criminals also have some deterrent effect, immediate investigation, and electricity order to safeguard national interests.

BRIEF DESCRIPTION

[0012] FIG. 1 is a schematic circuit diagram of the principles of the present invention.

detailed description

[0013] The present invention will be further described in detail in conjunction with accompanying drawings and specific embodiments.

[0014] As shown in FIG 1, the present invention is a portable electronic smart meter field calibration apparatus comprising a housing, said housing interior provided with a first pulse counter, a second pulse counter, a standard smart meter , 9V DC, load and leakage protection, the first pulse counter is connected with the smart meter under test, the second pulse counter with the standard smart meter is connected to the input terminal of the standard with a test meter smart energy tables are connected in series, the standard meter output terminal connected to a load, the drain terminal of the input protection device to be tested and the smart meter is connected to a 9V DC power supply to the first pulse and the second pulse counter counter providing power; 1000W load of the hair dryer; the first and second pulse counter both pulse counters ⑶D7949A-P12V four cycle digital down counter; threading said housing is provided with inlet and outlet holes of the cables; the said standard smart meter is within the error range national standard GB / T7215.321 meter qualified technical requirements.

[0015] Example:

In the electronic system generally contains both analog and digital components. Analog circuits are necessary components of the system. For convenience store, analyze and transmit signals, the digital circuit is more advantages. Electronic energy meter output signal is a pulse signal. Is the basic counter logic devices used in the digital system more. It can not only record the number of input clock pulses, can also achieve frequency, timing and pulse sequence generating pulse beat and the like. Many types counter, according to different clock pulse input of counter can be divided into synchronous and asynchronous counters, different binary system can be divided into non-binary counter, and binary counter, a different trend of decreasing the count by the digital process, separable Up counter and the down counter and the reversible counter. This product ⑶D7949A-P12V four cycle digital down counter. It has the following characteristics: 1, using high-speed integrated chip, digital high-brightness LED, beautiful appearance, easy to install. 2, high-speed counting function, stability, anti-interference ability, accurate counting. 3, the count value of non-volatile 4, widely used in automatic dosing device, the winding machine, packaging machinery, textile and other automated test equipment. Technical data: Supply Voltage: DC6V-15.5V, working current: <30mA, count signals: a pulse trigger edge: rising, display range: 0000-9999, cycle counting :() was added, the reset signal: short. Weight: 50g. Dimensions: 79mm * 43mm * 30.5mm, Display mode: LED digital display, LED: 0.56 inches red. It has to identify electronic energy meter pulse function, and the wiring do simple, safe, able to do real-time detection and anti-tampering function meter.

[0016] Specific operation, before the first detection in the preparation of a metering device within an error range national standard GB / T7215.321 qualified technical requirements meter (hereinafter referred to as standard table), with ± 2.0 Table civilian levels. Then the electronic counter meter mounted inside a shell, which facilitates wiring to run reliably, and easy to install. This is already making good pulse counter. Open the meter box, the first to be detected on a meter cabinets epitope, an epitope is placed two pulse counters, pulse counter placed two epitopes of an external 9V DC power supply input terminal, an input terminal connected to the electrical energy to be detected table pulse output. Intermediate pulse counter terminals for short, is used to reset the counter. (Note that the polarity of the meter output connected to an input terminal of the pulse counter) to monitor the number of a table under the same load of the output pulse. Then the standard hour meter on three epitopes, epitope placed four second pulse counter, to monitor at the same number of output pulses of the second load block table. With connecting the same as described above. Hair dryer with a primary circuit with 6 sq red, blue copper wires, the secondary circuit is a measuring signal circuit, with 1.5 square yellow, green wires, supply measured using a pulse counter. 9V DC power supply with a 1.5 square black, red copper wire. 220V power meter connected to the power supply, and the power meter to be detected in series with the standard table, that is, a series circuit composed of, pre-prepared blower connected on the load side of the standard table, a series circuit of a simple composition. This time two meter by the same load current flowing through the meter is the same, and the two tables are equal to the rated voltage, the number of output pulses thereof are also the same. Similarly with electricity, the measured number of output pulses of each two meter, and then by comparing the two values ​​of the pulse counter shown, so that a specially designed circuit. The method of checking phase active and reactive power meter and meter the same manner as above, only need to be detected into a three-phase meter watthour meter, to replace the standard table with the same meter constant as the detection of phase active energy meter, the pulse counter compares a sampling of the respective meter. Since the rising edge of this counter is measured, the standard table with the meter to be detected with a ± limp / KWH a deviation, this is normal.

[0017] Such an electronic energy meter field calibrator is thus completed, it is designed for single-site verification, active and reactive three-phase electronic energy meter design and development of a portable device. This method uses high-precision sampling technique, combined with the latest digital signal processing method provides a convenient and efficient solution for field calibration meter and many other electrical instrumentation.

Claims (5)

1. A portable electronic smart meter field calibration apparatus comprising: a housing, the inner housing is provided with a first pulse counter, a second pulse counter, a standard smart meter, 9V DC, load and leakage protection, the first pulse counter is connected with the smart meter under test, the second pulse counter with the standard smart meter is connected to the input terminal of the standard with a test meter smart meter are connected in series, the standard meter output terminal connected to a load, the drain terminal of the input protection device to be tested and the smart meter is connected to a 9V DC power supply provides power to the second pulse of the first pulse counter is a counter.
2. 2. A portable electronic smart meter field calibration device according to claim 1, wherein: said load is a hair dryer 100W.
3. 3. A portable electronic smart meter field calibration device according to claim 1, wherein: said first and second pulse counter both pulse counters ⑶D7949A-P12V four cycle digital down counter.
4. 4. A portable electronic smart meter field calibration device according to claim 1, wherein: said housing is provided with a conduit opening out cable.
5. 5. A portable electronic smart meter field calibration device according to claim 1, wherein: said standard smart meter is within the error range national standard GB / T7215.321 qualified technical requirements meter .