CN202916320U - Electric energy meter pulse counter - Google Patents
Electric energy meter pulse counter Download PDFInfo
- Publication number
- CN202916320U CN202916320U CN 201220535241 CN201220535241U CN202916320U CN 202916320 U CN202916320 U CN 202916320U CN 201220535241 CN201220535241 CN 201220535241 CN 201220535241 U CN201220535241 U CN 201220535241U CN 202916320 U CN202916320 U CN 202916320U
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- China
- Prior art keywords
- electric energy
- energy meter
- microprocessor
- pulse
- meter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an electric energy meter pulse counter, which comprises a photoelectric sampler, a microprocessor and an LED digital display connected sequentially in series, wherein the photoelectric sampler is arranged at the pulse indicating lamp of the electric energy meter or at a turntable of a mechanical electric meter, converts the flashing signals of the pulse indicating lamp or cycle numbers of the turntable into TTL pulse signals with the same frequency, and is connected onto the microprocessor; TTL pulse signals outputted by an electric energy meter pulse output terminal are directly outputted to the microprocessor; and one of the three above pulse accumulation numbers recorded by the microprocessor are outputted to the LED digital display. The electric energy meter pulse counter has the advantages and the beneficial effects that as three sampling ways are adopted, the electric energy measuring resolution under a small load can be significantly improved, the workload of measuring staff is simultaneously greatly reduced, and the measurement results of the electric energy meter are improved.
Description
Technical field
The utility model relates to measuring apparatus, particularly a kind of electric energy meter impulse meter.
Background technology
Intelligent electric energy meter is the nerve endings of intelligent grid, is the tie of contact electricity consumption client and power supply enterprise.The metering of power supply enterprise and electric-examination personnel often need to carry out scene and indoor detection to electric energy meter.When detecting little load, need observation umber of pulse that electric energy meter is sent out.During Site Detection, if the load that detects is too small, for example mobile phone fills the electric energy of an electric consumption, traditional metering testing tool can't detect little load electric energy table institute quantity calculation at short notice, therefore also can't test out the error of electric energy meter, need the umber of pulse of artificial observation electric energy meter or the institute number of turn-taking to calculate, the resolution of electric energy metrical is low, workload is large, the metering weak effect.
The utility model content
The purpose of this utility model is exactly the defects that will overcome prior art, a kind of multiple sample mode that has is provided, can significantly improve the resolution of electric energy metrical under the little load, reduce gage work personnel workload, improve the electric energy meter impulse meter of metering effect.
For achieving the above object, the electric energy meter impulse meter that the utility model provides, comprise power supply, also comprise the successively photoelectric sampler of series winding, microprocessor and LED nixie display, described photoelectric sampler is installed in the pulse pilot lamp place of electric energy meter, perhaps be installed in the rotating disk place of mechanical electricity meter, described photoelectric sampler converts the flash signal of pulse pilot lamp or rotating disk several signals of turn-taking the TTL pulse signal of same frequency to, the output signal of described photoelectric sampler is connected to described microprocessor, simultaneously, the TTL pulse signal of electric energy meter pulse output end output directly exports described microprocessor to, and one of above-mentioned three kinds of pulse accumulative totals of described microprocessor records export described LED nixie display to.
The utility model electric energy meter impulse meter, wherein said microprocessor is provided with reset button.
The utility model electric energy meter impulse meter, it is the chip of STCF11F02E that wherein said microprocessor adopts model, it is the chip of 5641AH that described LED nixie display adopts model.
The utility model electric energy meter impulse meter, wherein said power supply are the batteries of 7V-24V or are the power supply adaptor that the three terminal integrated voltage stabilizer chip of LM78L05 consists of by model.
Advantage and the good effect of the utility model electric energy meter impulse meter are: owing to having adopted several three kinds of sample modes that comprise that electric energy meter pulse terminal, pulse pilot lamp signal and the mechanical electricity meter rotating disk is turn-taked, significantly improved the resolution of electric energy metrical under the little load, greatly reduce simultaneously gage work personnel's workload, improved the metering effect of electric energy meter.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is the structured flowchart of the utility model electric energy meter impulse meter;
Fig. 2 is the circuit theory diagrams of the utility model electric energy meter impulse meter;
Fig. 3 is the circuit theory diagrams of power supply.
Embodiment
Describe the embodiment of the utility model electric energy meter impulse meter in detail below in conjunction with accompanying drawing.
With reference to Fig. 1, the electric energy meter impulse meter that the utility model provides comprises power supply U1, successively photoelectric sampler A, microprocessor IC1 and the LED nixie display U2 of series winding.Photoelectric sampler A is installed in the pulse pilot lamp place of electric energy meter, perhaps is installed in the rotating disk place of mechanical electricity meter.Photoelectric sampler A converts the flash signal of pulse pilot lamp or rotating disk several signals of turn-taking the TTL pulse signal of same frequency to.The output signal of photoelectric sampler A is connected to microprocessor IC1 by DB9 attachment plug, simultaneously, the TTL pulse signal of electric energy meter pulse output end output directly exports microprocessor IC1 to, and the mode that sampled signal is connected to microprocessor IC1 pulse signal input terminal is identical, all is DB9 connectors.Microprocessor IC1 uses I/O mouth input pulse signal, begins counting with the negative edge of pulse square wave, and one of above-mentioned three kinds of pulse accumulative totals of microprocessor IC1 record export LED nixie display U2 to and show.
Referring to Fig. 2, it is the chip of STCF11F02E that microprocessor IC1 adopts model.It is the chip of 5641AH that LED nixie display U2 adopts model.The 12nd pin of microprocessor IC1,13 pin, 14 pin, 15 pin, 16 pin, 17 pin, 18 pin and 19 pin select signal to be connected to successively respectively the 1st pin, 2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin and 8 pin of LED nixie display U2 as section, and the 7th pin of microprocessor IC1,8 pin, 9 pin and 11 pin select signal to be connected to successively respectively the 9th pin, 10 pin, 11 pin and 12 pin of nixie display U2 as the position.6 pin of microprocessor IC1 are connected to the anode of diode D1 by pull-up resistor R3, the negative electrode of diode D1 is the input end of pulse signal.1 pin of microprocessor IC1,2 pin, resistance R 2 and reset button CLR KEY1 form reset circuit.
Power supply U1 is battery or the power supply adaptor of 7V-24V.With reference to Fig. 3, in the embodiment of the utility model electric energy meter impulse meter, it is the three terminal integrated voltage stabilizer chip formation of LM78L05 that power supply U1 adopts model.Vin is power supply U1R input end, and input range is DC7-24V, and the direct current 5V power supply by stable output behind the three end integrated voltage-stabilized chip LM78L05 is as the working power of electric energy meter impulse meter.
The following describes the course of work of the utility model electric energy meter impulse meter.
The electric energy meter metering process is exactly the process of umber of pulse that electric energy meter is sent out accumulative total, and according to this principle, the utility model electric energy meter impulse meter measures electric energy by gathering umber of pulse that electric energy meter is sent out.For example: the meter constant of certain electric energy meter is 1600imp/kWh, and when electric energy meter accumulative total was sent 1600 pulses, the expression ammeter had measured the electric energy of 1kWh, and 160 pulses represent 0.1kWh, by that analogy.
After connecting working power, the 6 pin P3.2 of microprocessor IC1 are connected to 5V by pull-up resistor R3, and when not having the signal input, 6 pin keep high level.During when the negative electrode that pulse signal input diode D1 is arranged and for high level, diode D1 both sides all are noble potential, not conducting; When pulse skips to low level from high level, diode D1 conducting, 6 pin are pulled to low level, at this moment numeral of microprocessor IC1 meter also shows numeral " 1 " by LED nixie display U2, when input signal skips to high level, and diode D1 cut-off, when skipping to low level by high level again, microprocessor IC1 counts a numeral again, and the numeral of at this moment LED nixie display U2 demonstration is " 2 ", by that analogy.Counting region is 0-9999, and when pressing reset button CLR KEY1,1 pin of microprocessor IC1 and 2 pin are low level simultaneously, and LED nixie display U2 resets, by 0 beginning again counting.
The utility model electric energy meter impulse meter is applied to electric energy meter field and indoor little load detects, and has obtained positive effect.Usually, electric energy meter is under peak load, and the pulse signal frequency of its output is 15.84kHz, so adopt the crystal oscillator of microprocessor IC1 inside to work.
Embodiment recited above is described preferred implementation of the present utility model, is not that design of the present utility model and scope are limited.Under the prerequisite that does not break away from the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (4)
1. electric energy meter impulse meter, comprise power supply (U1), it is characterized in that: also comprise the successively photoelectric sampler (A) of series winding, microprocessor (IC1) and LED nixie display (U2), described photoelectric sampler (A) is installed in the pulse pilot lamp place of electric energy meter, perhaps be installed in the rotating disk place of mechanical electricity meter, described photoelectric sampler (A) converts the flash signal of pulse pilot lamp or rotating disk several signals of turn-taking the TTL pulse signal of same frequency to, the output signal of described photoelectric sampler (A) is connected to described microprocessor (IC1), simultaneously, the TTL pulse signal of electric energy meter pulse output end output directly exports described microprocessor (IC1) to, and one of above-mentioned three kinds of pulse accumulative totals of described microprocessor (IC1) record export described LED nixie display (U2) to.
2. electric energy meter impulse meter according to claim 1, it is characterized in that: wherein said microprocessor (IC1) is provided with reset button.
3. electric energy meter impulse meter according to claim 1 and 2 is characterized in that: it is the chip of STCF11F02E that wherein said microprocessor (IC1) adopts model, and it is the chip of 5641AH that described LED nixie display (U2) adopts model.
4. electric energy meter impulse meter according to claim 3 is characterized in that: wherein said power supply (U1) is the battery of 7V-24V or is the power supply adaptor that the three terminal integrated voltage stabilizer chip of LM78L05 consists of by model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535241 CN202916320U (en) | 2012-10-18 | 2012-10-18 | Electric energy meter pulse counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220535241 CN202916320U (en) | 2012-10-18 | 2012-10-18 | Electric energy meter pulse counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916320U true CN202916320U (en) | 2013-05-01 |
Family
ID=48164623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220535241 Expired - Fee Related CN202916320U (en) | 2012-10-18 | 2012-10-18 | Electric energy meter pulse counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068066A (en) * | 2020-08-14 | 2020-12-11 | 江苏斯菲尔电气股份有限公司 | Electric energy pulse precision detection method |
-
2012
- 2012-10-18 CN CN 201220535241 patent/CN202916320U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068066A (en) * | 2020-08-14 | 2020-12-11 | 江苏斯菲尔电气股份有限公司 | Electric energy pulse precision detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20201018 |