CN204044242U - A kind of electric energy meter monopulse acquisition process circuit - Google Patents
A kind of electric energy meter monopulse acquisition process circuit Download PDFInfo
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- CN204044242U CN204044242U CN201420438149.3U CN201420438149U CN204044242U CN 204044242 U CN204044242 U CN 204044242U CN 201420438149 U CN201420438149 U CN 201420438149U CN 204044242 U CN204044242 U CN 204044242U
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- 238000004891 communication Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of electric energy meter monopulse acquisition process circuit, comprise current-limiting resistance R1, low-pass filter circuit, clamp diode D1, photoelectrical coupler U1 and not gate U2, one end of current-limiting resistance R1 is used for the monopulse output terminal of external electric energy meter, the other end of current-limiting resistance R1 is connected with the positive input terminal of photoelectrical coupler U1, low-pass filter circuit is connected in parallel on the junction of current-limiting resistance R1 and photoelectrical coupler U1, clamp diode D1 is just being connected in parallel on photoelectrical coupler U1, between negative input end, the input end of the output terminal Sheffer stroke gate U2 of photoelectrical coupler U1 is connected, the output terminal output pulse signal of not gate U2 is connected with the signal input part of microprocessor in device for taking data from electric meter.The utility model.The monopulse of old-fashioned electric energy meter can be exported the applicable pulse signal being converted to microprocessor in device for taking data from electric meter, not burn out I/O port, circuit is simple, easily realizes, has a good application prospect.
Description
Technical field
The utility model relates to a kind of electric energy meter monopulse acquisition process circuit, belongs to electric device maintenance technical field.
Background technology
At present, the user of a lot of newly-built community has reequiped new-type electric energy meter, the more old-fashioned electric energy meter of new-type electric energy meter has certain advantage, user power utilization amount is obtained by the mode of step-by-step counting, then electricity is pressed communication protocol remote transmission to acquisition terminal, achieve automatic meter-reading, compared with old-fashioned electric energy meter, reduce manual metering at the error rate read and in recording electrical meter data procedures, improve the efficiency of management of power department to a certain extent and decrease the expense of checking meter, also bringing conveniently to resident simultaneously.But the expense of reequiping new-type electric energy meter is relatively high, extra-pay is brought to user, in order to make full use of original old-fashioned ammeter and reach the object reducing recondition expense, there is device for taking data from electric meter, can measure old-fashioned electric energy meter, then by power consumption remote transmission to data collection station, reach the functional requirement of modern new-type ammeter, but the electric impulse signal of the output of old-fashioned electric energy meter does not mate with microprocessor in device for taking data from electric meter, traditional old-fashioned electric energy meter, the pulse signal amplitude exported as DS (T) 72 is 12V ± 5% or 24V ± 5%, pulse width initial value is 80ms ± 20%, pulse signal is not when processing, by pulse output end mouth directly with microprocessor in device for taking data from electric meter I/O mouth be connected, being bound to will
I/O port damages, and how the monopulse of old-fashioned electric energy meter is exported the applicable pulse signal being converted to microprocessor in device for taking data from electric meter, is the current problem needing to solve.
Utility model content
The purpose of this utility model overcomes the electric energy meter to traditional, reequips the problem that the expense of new-type electric energy meter is relatively high.Electric energy meter monopulse acquisition process circuit of the present utility model, the monopulse of old-fashioned electric energy meter can be exported the applicable pulse signal being converted to microprocessor in device for taking data from electric meter, do not burn out I/O port, circuit is simple, easy realization, reduce the cost changing old-fashioned electric energy meter, have a good application prospect.
In order to achieve the above object, the technical solution used in the present invention is:
A kind of electric energy meter monopulse acquisition process circuit, it is characterized in that: comprise current-limiting resistance R1, low-pass filter circuit, clamp diode D1, photoelectrical coupler U1 and not gate U2, one end of described current-limiting resistance R1 is used for the monopulse output terminal of external electric energy meter, the other end of described current-limiting resistance R1 is connected with the positive input terminal of photoelectrical coupler U1, described low-pass filter circuit is connected in parallel on the junction of current-limiting resistance R1 and photoelectrical coupler U1, described clamp diode D1 is just being connected in parallel on photoelectrical coupler U1, between negative input end, the positive pole of described clamp diode D1 is connected with the negative input end of photoelectrical coupler U1, and be jointly connected to the ground and connect, the negative pole of described clamp diode D1 is connected with the positive input terminal of photoelectrical coupler U1, the input end of the output terminal Sheffer stroke gate U2 of described photoelectrical coupler U1 is connected, the output terminal output pulse signal of described not gate U2 is connected with the signal input part of microprocessor in device for taking data from electric meter.
Aforesaid a kind of electric energy meter monopulse acquisition process circuit, is characterized in that: the output terminal Sheffer stroke gate U2 connection of described photoelectrical coupler U1 is touched and is provided with pull-up resistor R3, and described pull-up resistor R3 is connected with 5V power supply by bleeder circuit.
Aforesaid a kind of electric energy meter monopulse acquisition process circuit, it is characterized in that: described bleeder circuit comprises the 4th resistance R4, the 5th resistance R5 that are in series, described 5th resistance R5 is connected with 5V power supply, and the junction of described 4th resistance R4, the 5th resistance R5 is connected with pull-up resistor R3.
Aforesaid a kind of electric energy meter monopulse acquisition process circuit, is characterized in that: described 4th resistance R4 resistance is 18k Ω, and the 5th resistance R5 resistance is 10k Ω.
Aforesaid a kind of electric energy meter monopulse acquisition process circuit, is characterized in that: described low-pass filter circuit comprises the 3rd resistance R3, the first electric capacity C1 and the second electric capacity C2 that are in parallel.
Aforesaid a kind of electric energy meter monopulse acquisition process circuit, is characterized in that: the resistance of described current-limiting resistance R1 is 1k Ω.
The beneficial effects of the utility model are: electric energy meter monopulse acquisition process circuit of the present utility model, the monopulse of old-fashioned electric energy meter can be exported the applicable pulse signal being converted to microprocessor in device for taking data from electric meter, do not burn out I/O port, circuit is simple, easy realization, reduce the cost changing old-fashioned electric energy meter, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of electric energy meter monopulse acquisition process circuit of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, electric energy meter monopulse acquisition process circuit of the present utility model, comprise current-limiting resistance R1, low-pass filter circuit, clamp diode D1, photoelectrical coupler U1 and not gate U2, one end of current-limiting resistance R1 is used for the monopulse output terminal of external electric energy meter, the other end of current-limiting resistance R1 is connected with the positive input terminal of photoelectrical coupler U1, current-limiting resistance R1 resistance is 1k Ω, can prevent the pulse of old-fashioned electric energy meter from exporting, electric current is excessive, burn out the light emitting diode of photoelectrical coupler U1, low-pass filter circuit is connected in parallel on the junction of current-limiting resistance R1 and photoelectrical coupler U1, clamp diode D1 is just being connected in parallel on photoelectrical coupler U1, between negative input end, the positive pole of clamp diode D1 is connected with the negative input end of photoelectrical coupler U1, and be jointly connected to the ground and connect, clamp diode D1 can filter out the undesired signal of the spike class in the pulse output of old-fashioned electric energy meter, the negative pole of clamp diode D1 is connected with the positive input terminal of photoelectrical coupler U1, the input end of the output terminal Sheffer stroke gate U2 of photoelectrical coupler U1 is connected, the output terminal output pulse signal of not gate U2 is connected with the signal input part of microprocessor in device for taking data from electric meter, the applicable pulse signal of microprocessor in device for taking data from electric meter, for 3V ± 5%, pulse width initial value is 20ms ± 10%, be easy to be subject to outside interference, here the not gate U2 arranged, can be good at shielding interference, effective, improve the reliability of the pulse signal of microprocessor in input device for taking data from electric meter.
The output terminal Sheffer stroke gate U2 connection of described photoelectrical coupler U1 is touched and is provided with pull-up resistor R3, described pull-up resistor R3 is connected with 5V power supply by bleeder circuit, described bleeder circuit comprises the 4th resistance R4 be in series, 5th resistance R5, 5th resistance R5 is connected with 5V power supply, described 4th resistance R4, the junction of the 5th resistance R5 is connected with pull-up resistor R3, 4th resistance R4 resistance is 18k Ω, 5th resistance R5 resistance is 10k Ω, ensure that the voltage of pull-up resistor R3 is at 3.3V, pull-up resistor R3 plays metering function further, the electric current preventing from being input to the I/O port of microprocessor in device for taking data from electric meter is excessive, break I/O port.
Described low-pass filter circuit comprises the 3rd resistance R3, the first electric capacity C1 and the second electric capacity C2 that are in parallel, the spike class undesired signal during the pulse coordinating clamp diode D1 to remove old-fashioned electric energy meter exports and other clutters.
In sum, electric energy meter monopulse acquisition process circuit of the present utility model, the monopulse of old-fashioned electric energy meter can be exported the applicable pulse signal being converted to microprocessor in device for taking data from electric meter, do not burn out I/O port, circuit is simple, easy realization, reduces the cost changing old-fashioned electric energy meter, has a good application prospect.
More than show and describe ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. an electric energy meter monopulse acquisition process circuit, it is characterized in that: comprise current-limiting resistance R1, low-pass filter circuit, clamp diode D1, photoelectrical coupler U1 and not gate U2, one end of described current-limiting resistance R1 is used for the monopulse output terminal of external electric energy meter, the other end of described current-limiting resistance R1 is connected with the positive input terminal of photoelectrical coupler U1, described low-pass filter circuit is connected in parallel on the junction of current-limiting resistance R1 and photoelectrical coupler U1, described clamp diode D1 is just being connected in parallel on photoelectrical coupler U1, between negative input end, the positive pole of described clamp diode D1 is connected with the negative input end of photoelectrical coupler U1, and be jointly connected to the ground and connect, the negative pole of described clamp diode D1 is connected with the positive input terminal of photoelectrical coupler U1, the input end of the output terminal Sheffer stroke gate U2 of described photoelectrical coupler U1 is connected, the output terminal output pulse signal of described not gate U2 is connected with the signal input part of microprocessor in device for taking data from electric meter.
2. a kind of electric energy meter monopulse acquisition process circuit according to claim 1, is characterized in that: the output terminal Sheffer stroke gate U2 connection of described photoelectrical coupler U1 is touched and is provided with pull-up resistor R3, and described pull-up resistor R3 is connected with 5V power supply by bleeder circuit.
3. a kind of electric energy meter monopulse acquisition process circuit according to claim 2, it is characterized in that: described bleeder circuit comprises the 4th resistance R4, the 5th resistance R5 that are in series, described 5th resistance R5 is connected with 5V power supply, and the junction of described 4th resistance R4, the 5th resistance R5 is connected with pull-up resistor R3.
4. a kind of electric energy meter monopulse acquisition process circuit according to claim 3, is characterized in that: described 4th resistance R4 resistance is 18k Ω, and the 5th resistance R5 resistance is 10k Ω.
5. a kind of electric energy meter monopulse acquisition process circuit according to claim 1, is characterized in that: described low-pass filter circuit comprises the 3rd resistance R3, the first electric capacity C1 and the second electric capacity C2 that are in parallel.
6. a kind of electric energy meter monopulse acquisition process circuit according to claim 1, is characterized in that: the resistance of described current-limiting resistance R1 is 1k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438149.3U CN204044242U (en) | 2014-08-06 | 2014-08-06 | A kind of electric energy meter monopulse acquisition process circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438149.3U CN204044242U (en) | 2014-08-06 | 2014-08-06 | A kind of electric energy meter monopulse acquisition process circuit |
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| CN204044242U true CN204044242U (en) | 2014-12-24 |
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| CN201420438149.3U Expired - Fee Related CN204044242U (en) | 2014-08-06 | 2014-08-06 | A kind of electric energy meter monopulse acquisition process circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888182A (en) * | 2017-11-13 | 2018-04-06 | 广东温氏食品集团股份有限公司 | Domestic animal feeding detection circuit, detection method and detecting system |
| CN112595392A (en) * | 2020-12-21 | 2021-04-02 | 金卡智能集团股份有限公司 | Pulse signal output circuit and flowmeter |
-
2014
- 2014-08-06 CN CN201420438149.3U patent/CN204044242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888182A (en) * | 2017-11-13 | 2018-04-06 | 广东温氏食品集团股份有限公司 | Domestic animal feeding detection circuit, detection method and detecting system |
| CN112595392A (en) * | 2020-12-21 | 2021-04-02 | 金卡智能集团股份有限公司 | Pulse signal output circuit and flowmeter |
| US12529583B2 (en) * | 2020-12-21 | 2026-01-20 | Goldcard Smart Group Co., Ltd. | Pulse signal output circuit and flowmeter |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |