A kind of electric energy meter reliability test system
Technical field
This utility model relates to test and measuring technical field, particularly relates to a kind of electric energy meter reliability test system.
Background technology
At present, according to national rule DL/T 448-2000 " electric power meter technical management code ", before electric energy meter uses
Need it is carried out performance test calibrating, to judge the accuracy in terms of table and reliability the most satisfied use requirement.
It is all that the standard laboratory in producer and electric energy meter calibration unit is carried out that these tests in the past are examined and determine, and to protect in test
The card environmental effect amount such as temperature, humidity is within the scope of required by code.Can only obtain electric energy meter by this method of testing to exist
Elementary error under standard environment, is not sufficient to judge electric energy meter accuracy under complicated site environment and reliability.
Popularizing recently as Multifunctional electronic electric energy meter, novel field-checking, an information about power distant place are transmitted, event
Barrier warning system starts appearance.Utilize current existing equipment and technology can accomplish the even school of the remote monitoring to electric energy meter
Test, but the automatization test system that electric energy meter can carry out integrated adaptability and long-term reliability test is still the most at present
Blank.
Utility model content
The purpose of this utility model is to provide a kind of electric energy meter reliability test system, it is possible to test different manufacturers, difference
The electric energy meter of model combination property under complicated site environment, its product quality of overall merit.
The technical solution adopted in the utility model is:
A kind of electric energy meter reliability test system, including proof box, described proof box be used for placing temperature and humidity controller and
To be measured taken temperature;Also include electric energy meter data acquisition module, pulse collection module, standard electric energy meter, photographic head, industrial computer,
GPRS communication module, PC and temperature and humidity controller;It is to be measured that the input of described electric energy meter data acquisition module connects each
Being taken temperature 485 communication interfaces, the outfan of electric energy meter data acquisition module is connected with industrial computer;Described pulse collection module
Input connects tested electric energy meter and the electrical energy pulse of standard electric energy meter and time pulse output end mouth respectively;Described host computer
Remotely it is connected with industrial computer by GPRS communication module;Described standard scale, the outfan of photographic head are connected with industrial computer respectively
Connect;The outfan of described industrial computer is connected with the input of temperature and humidity controller.
Described temperature and humidity controller includes Temperature Humidity Sensor, relay module, electric heater, refrigeration compressor and steaming
Sending out device, the outfan of Temperature Humidity Sensor is connected with industrial computer input, and industrial computer is added with electricity respectively by relay module
Hot device, refrigeration compressor are connected with the control end of vaporizer.
Described electric energy meter data acquisition module uses PCI-1622CU, the electricity in gathering test electric energy meter, electricity
Pressure, electric current, power factor data.
Described pulse collection card uses and grinds China's PCI-1780 pulse collection card.
Described GPRS communication module uses CM3180EP, it is achieved host computer and the telecommunication of slave computer.
The model of described epidemic disaster controller uses SM1910B_RS485.
Described relay module employing ER-4D40-M0 tetra-enters four and goes out 485 relay module.
This utility model passes through industrial computer and supporting data acquisition, control module, coordinates existing electric energy meter RS-
485 communication functions, can realize the image in a distant place, clock, environment parameter, electric quantity data and the transmission of various controlled quentity controlled variable, can to 1~
16 electric energy meters carry out error testing simultaneously, and whether automatic decision electric energy meter exists fault and abnormal conditions;By arranging temperature
Humidity controller can gather the epidemic disaster signal of the interior case of test, and by PC control;In the next function by electric energy meter data
Acquisition module and pulse collection module receive and electric energy in food preservation test electric energy meter, voltage, electric current, frequency, power factor etc.
Data, and compare with standard scale data further, evaluate its metering accuracy.By test different manufacturers, different model
Electric energy meter combination property under complicated site environment, can provide detailed with its product quality of overall merit to order user
Reference.
Accompanying drawing explanation
Fig. 1 is electrical principle block diagram of the present utility model.
Detailed description of the invention
As it is shown in figure 1, this utility model includes the proof box sealed, it is used for placing temperature and humidity controller and to be measured tested
Table.Also include electric energy meter data acquisition module, pulse collection module, standard electric energy meter, photographic head, industrial computer, GPRS communication
Module, PC, temperature and humidity controller and relay module;The input of described electric energy meter data acquisition module connects each quilt
Taking temperature 485 PORT COM, outfan is connected with industrial computer, and described electric energy meter data acquisition module uses PCI-1622CU,
The parameter such as voltage, electric current, power factor, frequency in the real-time reading power meters of industrial computer, by arranging suitable threshold value, work
Control machine can extremely and be pointed out at host computer by automatic decision;Electricity and the temporal information of each tested electric energy meter pass through electric energy meter
Electrical energy pulse and time pulse output end mouth, described electric energy meter pulse acquisition module uses PCI-1780 pulse collection card, uses
In gathering test electric energy meter and the electric energy of standard electric energy meter, time pulse;It is acquired by PCI-1780 pulse collection card and is counted
Number, industrial computer, by comparing with standard scale lock-out pulse, calculates electric energy metering error;Described standard scale, photographic head
Outfan is connected with industrial computer respectively;
Described temperature and humidity controller includes Temperature Humidity Sensor, relay module, electric heater, refrigeration compressor and steaming
Sending out device, the outfan of Temperature Humidity Sensor is connected with industrial computer input, and industrial computer is added with electricity respectively by relay module
Hot device, refrigeration compressor are connected with the control end of vaporizer.
The model of described epidemic disaster controller uses SM1910B_RS485;It can be monitored and controlled temperature accurately
And humidity, error rate is little;Described relay module employing ER-4D40-M0 tetra-enters four and goes out 485 relay module;This practicality is new
Type employing SM1910B_RS485 Temperature Humidity Sensor+ER-4D40-M0 four enters four and goes out 485 relay module+electric heater+refrigeration
Compressor, the mode of vaporizer, industrial computer is by 485 bus Real-time Collection test internal system temperature, and passes through relay mould
Block controls heating or refrigerating plant work, reaches and keeps required experimental temperature (-20 ~ 60 DEG C).
This utility model passes through industrial computer and supporting data acquisition, control module, is widely used in Automated condtrol
Field, coordinates existing electric energy meter RS-485 communication function, described GPRS communication module to use CM3180EP, it is achieved host computer
Telecommunication with slave computer.The image in a distant place, clock, environment parameter, electric quantity data and the transmission of various controlled quentity controlled variable can be realized.
Host computer and slave computer carry out communication by GPRS communication module, such that it is able to realizing on-site parameters configuration, error testing, number
According to functions such as collection, condition monitoring, data preservation and process, data remotes.Received by host computer in the next function and preserve
Test the data such as the electric energy in electric energy meter, voltage, electric current, frequency, power factor, and compare with standard scale data further
Right, evaluate its measurement accuracy.And in order to test comprehensive under complicated site environment of different manufacturers, different model electric energy meter
Performance, its product quality of overall merit, provide detailed reference to order user.