CN103163370A - Testing method for intelligent electric energy meter clock frequency under high-temperature environment - Google Patents
Testing method for intelligent electric energy meter clock frequency under high-temperature environment Download PDFInfo
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- CN103163370A CN103163370A CN2013100603220A CN201310060322A CN103163370A CN 103163370 A CN103163370 A CN 103163370A CN 2013100603220 A CN2013100603220 A CN 2013100603220A CN 201310060322 A CN201310060322 A CN 201310060322A CN 103163370 A CN103163370 A CN 103163370A
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Abstract
The invention relates to a testing method for intelligent electric energy meter clock frequency under a high-temperature environment. The method comprises the following steps: (1) enabling a working power supply AC and a switch K1 to be connected on the power ends X2, Y2 of an intelligent electric energy meter after the working power supply AC and the switch K1 are connected in series, and enabling a resistor R, a battery pack DC and a switch K2 to be respectively connected on the clock signal ends X1,Y1of the intelligent electric energy meter, and the counting ends X3,Y3 of a universal counter after the resistor R, the battery pack DC and the switch K2 are connected in series, and enabling the crystal oscillating frequency output end A1 of a standard crystal oscillating generator to be connected with the crystal oscillating frequency input end X4 through a coaxial cable; (2) keeping switches K1,K2 to be disconnected, placing the intelligent electric energy meter into a high-low-temperature test box, and adjusting temperature to the specified test temperature; and (3) switching on the switches K1,K2, powering on a counter switch of the universal counter, opening the standard crystal oscillating generator to emit crystal oscillating frequency of 10MHz, and testing and displaying the clock frequency of the intelligent electric energy meter through the universal counter. The testing method for the intelligent electric energy meter clock frequency under the high-temperature environment has the advantages that testing of intelligent electric energy meter clock frequency can be accurately and reliably completed under the high-temperature environment, and using is easy and convenient.
Description
Technical field
The present invention relates to the method for testing of Intelligent electric energy meter clock frequency under a kind of hot environment.
Background technology
Intelligent electric energy meter is the important component part of electricity consumption acquisition system, its reliablely and stablely operational relation to the intelligent grid construction progress, more have influence on the safety utilization of electric power of vast power customer, wherein clock frequency is the intelligent electric energy meter important parameter, and its accuracy will affect ammeter function and reliability.But in the testing process of intelligent electric energy meter, due to the restriction of high-low temperature test chamber volume, can't carry out the test of Intelligent electric energy meter clock frequency under hot environment by the service test stage body, bring huge economic loss to electric power enterprise.
Summary of the invention
Technical matters to be solved by this invention has been to provide the method for testing of Intelligent electric energy meter clock frequency under a kind of hot environment.
The technical solution adopted for the present invention to solve the technical problems:
Step of the present invention is as follows:
(1) will be connected on power supply terminal X2, the Y2 of intelligent electric meter after working power AC and K switch 1 series connection, will be connected on clock signal terminal X1, the Y1 of intelligent electric meter after resistance R, electric battery DC and K switch 2 series connection; The crystal oscillator frequency output terminals A 1 of standard crystal oscillator generator is met the crystal oscillator frequency input end X4 of universal counter through concentric cable, counting end X3, the Y3 of described universal counter is connected on the two ends of resistance R, electric battery DC and K switch 2 after series connection;
(2) described K switch 1, K2 remain open, and only described intelligent electric meter are put into high low temperature experimental box, start high-low temperature test chamber, adjust temperature to the regulation test temperature;
(3) closed described K switch 1, K2 to the intelligent electric energy meter making alive, make it in running order; Start the universal counter counter switch, open standard crystal oscillator generator emission crystal oscillator frequency, test the clock frequency of intelligent electric energy meter under hot conditions by universal counter.
The model of described universal counter is SC7201;
Described standard crystal oscillator generator is selected the JS1 Error Calculator, and the crystal oscillator frequency of 10MHz is provided.
The good effect that the present invention produces is as follows: this method can accurately and reliably be completed under high temperature the test to the Intelligent electric energy meter clock frequency, simple and convenient, for the quality management and control of intelligent electric energy meter provides strong technical support, avoid the economic loss of bringing to electric power enterprise.
Description of drawings
Fig. 1 is device therefor annexation schematic diagram of the present invention.
In Fig. 1,1 intelligent electric energy meter, 2 universal counters, 3 standard crystal oscillator generators, 4 high-low temperature test chambers.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated:
The course of work of the present embodiment is as follows as shown in Figure 1:
1) will be connected on power supply terminal X2, the Y2 of intelligent electric meter 1 after working power AC and K switch 1 series connection, will be connected on clock signal terminal X1, the Y1 of intelligent electric meter 1 after resistance R, electric battery DC and K switch 2 series connection; The crystal oscillator frequency output terminals A 1 of standard crystal oscillator generator 3 is met the crystal oscillator frequency input end X4 of universal counter 2 through concentric cable, counting end X3, the Y3 of described universal counter 2 is connected on the two ends of resistance R, electric battery DC and K switch 2 after series connection;
2) described K switch 1, K2 remain open, and only described intelligent electric meter 1 are put into high low temperature experimental box 4, start high-low temperature test chamber 4, adjust temperature to the regulation test temperature;
3) closed described K switch 1, K2 to intelligent electric energy meter 1 making alive, make it in running order; Start universal counter 2 counter switches, open standard crystal oscillator generator 3 emission crystal oscillator frequencies, by the clock frequency of universal counter 2 test intelligent electric energy meters 1 under hot conditions.
The model of described universal counter 2 is SC7201;
Described standard crystal oscillator generator 3 is selected the JS1 Error Calculator, and the crystal oscillator frequency of 10MHz is provided.
The test temperature of described regulation is 60 ℃, and 60 ℃ is the maximum operating temperature of intelligent electric energy meter 1.
Described resistance R is got 1.5K Ω, and electric battery DC2 is the 6V DC voltage, and working power AC is the 220V AC power.
The model of described universal counter 2 is SC7201;
Described standard crystal oscillator generator 3 is selected the JS1 Error Calculator, and the crystal oscillator frequency of 10MHz is provided.
Principle of work of the present invention:
Described electric battery DC is the 6V DC voltage, and resistance R is pull-up resistor, and resistance is 1.5K Ω, and the electric current that the external circuit that both consists of provides need reach the saturation current of the inner optocoupler of intelligent electric energy meter, and the saturation current of intelligent electric energy meter 1 inner optocoupler is about 3mA.Do not add external circuit and be and can't be directly measure the clock frequency at clock signal terminal place with universal counter 2 and standard crystal oscillator generator 3.
The monitoring accuracy be and surveying instrument (being universal counter 2 and standard crystal oscillator generator 3) related.Surveying instrument has guaranteed that surveying instrument is not subjected to environmental interference outside high-low temperature test chamber 4.
Claims (2)
1. the method for testing of Intelligent electric energy meter clock frequency under a hot environment is characterized in that step is as follows:
1) will be connected on power supply terminal X2, the Y2 of intelligent electric meter (1) after working power AC and K switch 1 series connection, will be connected on clock signal terminal X1, the Y1 of intelligent electric meter (1) after resistance R, electric battery DC and K switch 2 series connection; The crystal oscillator frequency output terminals A 1 of standard crystal oscillator generator (3) is met the crystal oscillator frequency input end X4 of universal counter (2) through concentric cable, counting end X3, the Y3 of described universal counter (2) is connected on the two ends of resistance R, electric battery DC and K switch 2 after series connection;
2) described K switch 1, K2 remain open, and only described intelligent electric meter (1) are put into high low temperature experimental box (4), start high-low temperature test chamber (4), adjust temperature to the regulation test temperature;
3) closed described K switch 1, K2 to intelligent electric energy meter (1) making alive, make it in running order; Start universal counter (2) counter switch, open standard crystal oscillator generator (3) emission crystal oscillator frequency, by the clock frequency of universal counter (2) test intelligent electric energy meter (1) under hot conditions.
2. Intelligent electric energy meter clock frequency test method under a kind of hot environment according to claim 1, the model that it is characterized in that described universal counter (2) is SC7201;
Described standard crystal oscillator generator (3) is selected the JS1 Error Calculator, and the crystal oscillator frequency of 10MHz is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310060322.0A CN103163370B (en) | 2013-02-26 | 2013-02-26 | A kind of method of testing of intelligent electric energy meter clock frequency under high-temperature environment |
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| CN201310060322.0A CN103163370B (en) | 2013-02-26 | 2013-02-26 | A kind of method of testing of intelligent electric energy meter clock frequency under high-temperature environment |
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| CN103163370A true CN103163370A (en) | 2013-06-19 |
| CN103163370B CN103163370B (en) | 2016-12-28 |
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Citations (6)
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| CN201993462U (en) * | 2011-01-31 | 2011-09-28 | 浙江省电力公司 | Three-phase intelligent electric energy meter checking device |
| CN102435975A (en) * | 2011-11-07 | 2012-05-02 | 中国电力科学研究院 | Intelligent cost control electric energy meter and clock calibration method |
| CN102636770A (en) * | 2012-05-11 | 2012-08-15 | 河北省电力研究院 | Test method of service life of intelligent electric energy meter |
| CN102692616A (en) * | 2012-01-11 | 2012-09-26 | 华北电网有限公司计量中心 | Automatic test and collection device and method of smart meter |
| WO2012142736A1 (en) * | 2011-04-22 | 2012-10-26 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN103091552A (en) * | 2011-10-31 | 2013-05-08 | 无锡华润矽科微电子有限公司 | Pre-calibrated electric energy metering circuit and calibration method |
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2013
- 2013-02-26 CN CN201310060322.0A patent/CN103163370B/en active Active
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|---|---|---|---|---|
| CN201993462U (en) * | 2011-01-31 | 2011-09-28 | 浙江省电力公司 | Three-phase intelligent electric energy meter checking device |
| WO2012142736A1 (en) * | 2011-04-22 | 2012-10-26 | 四川电力科学研究院 | Field integral detecting system of three-phase electric energy measuring system of electric distribution network |
| CN103091552A (en) * | 2011-10-31 | 2013-05-08 | 无锡华润矽科微电子有限公司 | Pre-calibrated electric energy metering circuit and calibration method |
| CN102435975A (en) * | 2011-11-07 | 2012-05-02 | 中国电力科学研究院 | Intelligent cost control electric energy meter and clock calibration method |
| CN102692616A (en) * | 2012-01-11 | 2012-09-26 | 华北电网有限公司计量中心 | Automatic test and collection device and method of smart meter |
| CN102636770A (en) * | 2012-05-11 | 2012-08-15 | 河北省电力研究院 | Test method of service life of intelligent electric energy meter |
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| 孙杰等: "基于GPIB接口的时钟测试仪内部晶振频率自动测试系统", 《上海计量测试》 * |
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| CN103163370B (en) | 2016-12-28 |
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