CN105372485A - Electric energy meter - Google Patents
Electric energy meter Download PDFInfo
- Publication number
- CN105372485A CN105372485A CN201510730512.8A CN201510730512A CN105372485A CN 105372485 A CN105372485 A CN 105372485A CN 201510730512 A CN201510730512 A CN 201510730512A CN 105372485 A CN105372485 A CN 105372485A
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- CN
- China
- Prior art keywords
- power consumption
- monitor
- electric energy
- energy meter
- cell power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an electric energy meter which can automatically test electric energy meter cell power consumption in a multi-path mode to substitute a universal meter which tests cell power consumption artificially. A current sampling port of a metering chip is parallel with a sampling resistor; a sampling signal is obtained through the sampling resistor; cell power consumption is calculated through the metering chip; the electric energy meter can automatically determine whether cell power consumption of a meter to be tested is in an abnormal state through the main chip internal program in a monitoring instrument, record the cell power consumption data in the abnormal state in real time, and store the data in an E2 memory; a warning lamp is on to give an alarm; the upper computer can perform real time monitoring, and read the cell power consumption data in the abnormal state.
Description
Technical field
The present invention relates to intelligent instrument field, be specifically related to a kind of electric energy meter.
Background technology
The key that ammeter time sharing electrical energy and ladder electricity correctly measure is the accuracy of ammeter timing, and time of mistake will cause rate to switch makeing mistakes, and freezes electricity unloading time of origin mistake etc. and affects the problem that ammeter normally measures.The reason affecting clock accuracy is that clock chip breaks down or power-off.And affect the reason that clock chip normally works and mainly contain the following aspects: the aspects such as clock chip crystal oscillator, temperature compensation, Clock battery and cell circuit.
And constantly have battery undervoltage table meter by the company of returning at market end at present, and data are larger, in these are return after sale, show the supplied materials problem or the circuit design defect of table meter own that are difficult to judge battery in respect of quite a few, only have and analyzed by the test of a large amount of speeding-up simulations; And the test of these speeding-up simulations, not only the test period is long, and high expensive, and the difficulty of manual test is also larger.
Summary of the invention
The object of this invention is to provide and can replace a kind of electric energy meter of multimeter manual testing battery power consumption by the multichannel battery power consumption of automatically testing electric energy meter.
The present invention is achieved through the following technical solutions: a kind of electric energy meter, comprise at least one tested table meter, sampling resistor, monitor, described tested table meter is provided with power consumption test point, computation chip is provided with in described monitor, described computation chip is provided with current sample mouth, the current sample mouth sampling resistor in parallel of described computation chip, the current sample mouth of described computation chip is also connected with the tested power consumption test point showing to count; The battery power consumption positive output end of described tested table meter and negative output terminal are connected to I+ end and the I-end of monitor, and the 485+ port of described monitor is connected with host computer with 485-port; Described computation chip model is ATT7053, ADC full scale is 800mv, measuring accuracy 5000:1; Described monitor master chip adopts OKI495 chip.
The using method of electric energy meter monitoring, step is as follows:
Step 1: monitor is powered on, the computation chip in monitor just carries out sampled signal to sampling resistor and calculates battery power consumption by computation chip again;
Step 2: judge whether battery power consumption is in abnormality by the master chip internal processes in monitor, and by the data real time record of abnormality, stored in E2 storer;
Step 3: real-time copy reading is carried out to battery power consumption by the automatic copy reading software in host computer.
As preferably, in described step 3, derive by upper function the data that multichannel battery power consumption is in abnormality.
The present invention is by the current sample mouth parallel connection sampling resistor at computation chip, sampled signal is obtained by sampling resistor, battery power consumption is calculated again by computation chip, and whether be in abnormality by the battery power consumption of the tested table meter of the master chip internal processes automatic decision in monitor, to the data real time record of battery power consumption under abnormality, and stored in E2 storer, alarm lamp lights and realizes reporting to the police, and carry out Real-Time Monitoring by host computer, also can read the data of battery power consumption under abnormality.
Usefulness of the present invention is: 1) replacing the loaded down with trivial details of artificial multimeter test with automatically monitoring, achieving automatic test; 2) can monitor in real time the battery power consumption of the tested table meter of multichannel simultaneously, and judge whether to be in abnormality; 3) once there is abnormal data in battery power consumption, just can be recorded, simultaneously this road alarm lamp Chang Liang, and indicating battery power consumption has exception, also carries out real-time copy reading by host computer to the data of battery power consumption and can derived data, is convenient to developer and analyzes.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of electric energy meter battery power consumption No. six of the present invention monitoring device.
1: power consumption test point; 2: computation chip; 3: sampling resistor; 4: the first positive output ends; 5: the first negative output terminals; 6: the first tested table meters; 7: the one I+ ends; 8: the one I-ends; 9: monitor; 10: monitor display screen; 11:485+ port; 12:485-port; 13: alarm lamp; 14: host computer; 15: the second positive output ends; 16: the second negative output terminals; 17: the three positive output ends; 18: the three negative output terminals; 19: the four positive output ends; 20: the four negative output terminals; 21: the five positive output ends; 22: the five negative output terminals; 23: the six positive output ends; 24: the six negative output terminals; 25: the two I+ ends; 26: the two I-ends; 27: the three I+ ends; 28: the three I-ends; 29: the four I+ ends; 30: the four I-ends; 31: the five I+ ends; 32: the five I-ends; 33: the six I+ ends; 34: the six I-ends; 35: the second tested table meters; 36: the three tested table meters; 37: the four tested table meters; 38: the five tested table meters; 39: the six tested table meters.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
See Fig. 1, a kind of electric energy meter, comprise at least one tested table meter, sampling resistor 3, monitor 9, described tested table meter is provided with power consumption test point 1, computation chip 2 is provided with in described monitor 9, described computation chip 2 is provided with current sample mouth, the current sample mouth sampling resistor 3 in parallel of described computation chip, and the current sample mouth of described computation chip 2 is also connected with the tested power consumption test point 1 showing to count; The battery power consumption positive output end of described tested table meter 6 and negative output terminal are connected to I+ end 7 and the I-end 8 of monitor 9, and the 485+ port one 1 of described monitor 9 is connected with host computer 14 with 485-port one 2; Described computation chip 2 model is ATT7053, ADC full scale is 800mv, measuring accuracy 5000:1; Described monitor 9 master chip adopts OKI495 chip.
The using method of electric energy meter battery power consumption Multi-channel monitoring device, step is as follows:
Step 1: monitor 9 is powered on, the computation chip 2 in monitor 9 just carries out sampled signal to sampling resistor 3 and calculates battery power consumption by computation chip again;
Step 2: judge whether battery power consumption is in abnormality by the master chip internal processes in monitor 9, and by the data real time record of abnormality, stored in E2 storer;
Step 3: real-time copy reading is carried out to battery power consumption by the automatic copy reading software in host computer 14.
In present embodiment, in described step 3, can derive by host computer 14 data that multichannel battery power consumption is in abnormality.
In present embodiment, described monitor 9 adopts three-phase meter bottom case structure part.
In present embodiment, sampling resistor 3 is parallel to the current sample mouth of the computation chip in monitor 9, then by battery power consumption first positive output end 4 of the first tested table meter 6, first negative output terminal 5 is connected to an I+ end 7 and the I-end 8 of monitor 9, battery power consumption second positive output end 15 of the second tested table meter 35, second negative output terminal 16 is connected to the 2nd I+ end 25 and the 2nd I-end 26 of monitor 9, battery power consumption the 3rd positive output end 17 of the 3rd tested table meter 36, 3rd negative output terminal 18 is connected to the 3rd I+ end 27 and the 3rd I-end 28 of monitor 9, battery power consumption the 4th positive output end 19 of the 4th tested table meter 37, 4th negative output terminal 20 is connected to the 4th I+ end 29 and the 4th I-end 30 of monitor 9, battery power consumption the 5th positive output end 21 of the 5th tested table meter 38, 5th negative output terminal 22 is connected to the 5th I+ end 31 and the 5th I-end 32 of monitor 9, battery power consumption the 6th positive output end 23 of the 6th tested table meter 39, 6th negative output terminal 24 is connected to the 6th I+ end 33 and the 6th I-end 34 of monitor 9, by the 485+ port one 1 of monitor 9, 485-port one 2 is connected with host computer 14, then by ATT7053 computation chip, sampled signal is carried out to sampling resistor 3, the sampled voltage peak value of ATT7053 computation chip 2 is ± 800mv, the electric current that can accurately record is 1uA-8mA, described ATT7053 computation chip 2 is by calculating battery power consumption, and whether there is exception by the tested table meter of the master chip internal processes automatic decision in monitor 9, when tested table meter battery power consumption has abnormal, just can record automatically, the alarm lamp 13 on this road is with often bright, also the backstage by host computer 14 reads abnormal data, the abnormal time occurred also can be recorded in the lump or read, when the power consumption of tested table meter is greater than 50uA, just automatically can record data, abnormal threshold values is also by actual conditions adjustment, and namely the present invention can monitor once every 1 minute, and monitoring time is also arranged voluntarily by backstage, the present invention is also connected host computer by 485+ port one 1 with 485-port one 2, is realized the real-time monitoring of the battery power consumption to tested table meter, can derive preservation to the data of record by the automatic testing software of host computer 14, the number of days of Real-Time Monitoring also can be arranged, and as copy reading is shorter for interval time, data reading system amount can get more and more, and can derive a secondary data every 7 days.
Of the present invention simple to operate, very little with multimeter measured precision deviation, the test of battery power consumption can be competent at completely, solve the loaded down with trivial details of artificial multimeter test, achieve robotization multi-channel test and monitor abnormal data in real time, and by data upload and derivation, being convenient to developer and analyzing.
Protection scope of the present invention includes but not limited to above embodiment, and protection scope of the present invention is as the criterion with claims, and any replacement that those skilled in the art will find apparent that, distortion, improvement made this technology all falls into protection scope of the present invention.。
Claims (3)
1. an electric energy meter, it is characterized in that: comprise at least one tested table meter, sampling resistor (3), monitor (9), described tested table meter is provided with power consumption test point (1), computation chip (2) is provided with in described monitor (9), described computation chip (2) is provided with current sample mouth, the current sample mouth sampling resistor (3) in parallel of described computation chip, the current sample mouth of described computation chip (2) is also connected with the tested power consumption test point (1) showing to count; The battery power consumption positive output end of described tested table meter (6) and negative output terminal are connected to I+ end (7) and I-end (8) of monitor (9), and the 485+ port (11) of described monitor (9) is connected with host computer (14) with 485-port (12).
2. a kind of electric energy meter according to claim 1, is characterized in that: described computation chip (2) model is ATT7053.
3. a kind of electric energy meter according to claim 1, is characterized in that: described host computer (14) can derive the data that multichannel battery power consumption is in abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730512.8A CN105372485A (en) | 2015-11-02 | 2015-11-02 | Electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510730512.8A CN105372485A (en) | 2015-11-02 | 2015-11-02 | Electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105372485A true CN105372485A (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510730512.8A Pending CN105372485A (en) | 2015-11-02 | 2015-11-02 | Electric energy meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841312A (en) * | 2016-05-18 | 2016-08-10 | 四川长虹空调有限公司 | Room air conditioner and remote detecting control system |
| CN111308180A (en) * | 2020-03-17 | 2020-06-19 | 浙江正泰仪器仪表有限责任公司 | Metering instrument power consumption abnormity detection method and metering instrument |
-
2015
- 2015-11-02 CN CN201510730512.8A patent/CN105372485A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841312A (en) * | 2016-05-18 | 2016-08-10 | 四川长虹空调有限公司 | Room air conditioner and remote detecting control system |
| CN111308180A (en) * | 2020-03-17 | 2020-06-19 | 浙江正泰仪器仪表有限责任公司 | Metering instrument power consumption abnormity detection method and metering instrument |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160302 |
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| WD01 | Invention patent application deemed withdrawn after publication |