CN203837725U - Module for adjusting acquired signal in monitoring system of electric transmission line - Google Patents
Module for adjusting acquired signal in monitoring system of electric transmission line Download PDFInfo
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- CN203837725U CN203837725U CN201420258821.0U CN201420258821U CN203837725U CN 203837725 U CN203837725 U CN 203837725U CN 201420258821 U CN201420258821 U CN 201420258821U CN 203837725 U CN203837725 U CN 203837725U
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- resistance
- circuit
- comparer
- diode
- transmission line
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Abstract
The utility model discloses a module for adjusting an acquired signal in a monitoring system of an electric transmission line. The module comprises a primary isolation circuit, a voltage limiting circuit, a filtering circuit, a first comparator and a photoelectric isolation circuit; and the primary isolation circuit comprises a first capacitor and a first resistor, and two ends of the first resistor are respectively connected with an input end of the filtering circuit and the first capacitor. The voltage limiting circuit comprises a first diode and a second diode, a cathode of the first diode and an anode of the second diode are both connected to a circuit between the first resistor and the input end of the filtering circuit, and an anode of the first diode and a cathode of the second diode are both grounded. An output end of the filtering circuit is connected with an inverting input end of the first capacitor, and the photoelectric isolation circuit is connected with an output end of the first comparator. Interference signals in the acquired signal can be eliminated when the module is applied, and thus the interference signals can be prevented from influencing monitoring accuracy of the monitoring system of the electric transmission line.
Description
Technical field
The utility model relates to Maintenance of Electric Transmission Line field, specifically for regulating the module of power transmission line monitoring system collection signal.
Background technology
Along with the modernization development of scientific-technical progress and industrial or agricultural, living standards of the people improve constantly, and power consumption significantly rises, and mains supply security, reliability have been proposed to more and more higher requirement.Transmission line of electricity is the artery of electric system, and its running status directly determines safety and the benefit of electric system.
For the ease of the running status to transmission line of electricity, monitor, existing transmission line of electricity is generally equipped with monitoring system.Wherein, the monitoring system of existing transmission line of electricity generally comprises monitoring center and a plurality of monitoring terminal, monitoring center and monitoring terminal utilize GPRS communication network as information transmission network, monitoring terminal adopts obliquity sensor to carry out shaft tower inclination measurement, adopt Temperature Humidity Sensor to carry out temperature, moisture measurement, adopt wind speed, wind transducer is to wind speed, wind direction is measured, adopt again microprocessor to sensor measurement to signal collection by GPRS, communicate by letter and reach monitoring center and carry out analyzing and processing after arranging, so that transmission line of electricity is carried out remote monitoring and is safeguarded in time.Yet, there are a large amount of undesired signals in the signal that in the monitoring terminal of existing power transmission line monitoring system, sensor reaches microprocessor, monitoring center receives the collection signal with a large amount of undesired signals can be affected it and carry out normal analyzing and processing, and then can affect normally carrying out of transmission line of electricity monitoring.
Utility model content
The purpose of this utility model is to overcome power transmission line monitoring system in prior art because existing a large amount of undesired signals to affect the deficiency of monitoring accuracy, provide a kind of for regulating the module of power transmission line monitoring system collection signal, it is applied between the sensor and microprocessor of monitoring terminal in power transmission line monitoring system, undesired signal can be effectively eliminated, and then the accuracy of effect of signals monitoring can be avoided interference.
The utility model solves the problems of the technologies described above and is achieved through the following technical solutions: for regulating the module of power transmission line monitoring system collection signal, comprise elementary buffer circuit, pressure limiting circuit, filtering circuit, the first comparer and photoelectric isolating circuit, described elementary buffer circuit comprises the first electric capacity and the first resistance, and described the first resistance two ends are connected with the first electric capacity with filtering circuit input end respectively; Described pressure limiting circuit comprises the first diode and the second diode, and the first diode cathode and the second diode cathode are all connected on the circuit between the first resistance and filtering circuit input end, the first diode cathode and the equal ground connection of the second diode cathode; Described filtering circuit output terminal is connected with the inverting input of the first comparer, and described photoelectric isolating circuit is connected with the output terminal of the first comparer.During the utility model application, the first electric capacity signal that the other end receiving sensor of connection the first resistance terminal detects relatively, the external microprocessor of photoelectric isolating circuit.
Further, described filtering circuit comprises the second resistance and the second electric capacity, described the second resistance two ends are connected with the first comparer inverting input with the first resistance respectively, and second electric capacity one end is connected on the circuit between the second resistance and the first comparer inverting input, its other end ground connection.Filtering circuit of the present utility model adopts simple RC circuit to carry out filtering, is convenient to realize.
Further, for regulating the module of power transmission line monitoring system collection signal, also comprise the 3rd electric capacity, described the first comparer is connected with power supply, and described the 3rd electric capacity one end is connected on the circuit between the first comparer and power supply, its other end ground connection.
Further, described photoelectric isolating circuit comprises photoelectrical coupler, the 3rd resistance, the 5th resistance and the 8th resistance, described the 3rd resistance two ends connect respectively the 4th pin and power supply of photoelectrical coupler, the 5th resistance two ends are connected with the second pin of the first comparator output terminal and photoelectrical coupler respectively, the 8th resistance two ends connect respectively the first pin and the power supply of photoelectrical coupler, the three-prong ground connection of described photoelectrical coupler.The utility model is when concrete application, and photoelectric isolating circuit is specifically by the external microprocessor of the 4th pin of photoelectrical coupler.
Further, for regulating the module of power transmission line monitoring system collection signal, also comprise the 4th resistance, the 6th resistance and the 7th resistance, described the 4th resistance two ends are connected with output terminal with the in-phase input end of the first comparer respectively, the 6th resistance one end is connected on the first comparator output terminal, its other end external power supply, the 7th resistance one end is connected on the circuit between the first comparer in-phase input end and the 4th resistance, its other end ground connection.
In sum, the utlity model has following beneficial effect: (1) the utility model comprises elementary buffer circuit, filtering circuit, the first comparer and photoelectric isolating circuit, during the utility model application, pass through the first Capacitor apart direct current signal of elementary buffer circuit, AC signal is inputted the first comparer after circuit filtering after filtering, the first comparer pulse signals carries out inputting photoelectric isolating circuit after shaping, the in the situation that photoelectric isolating circuit being isolated at electricity, take light as medium transmission signal, input and output circuit is isolated, noise in effective Inhibitory signal transmitting procedure, eliminate the interference of ground loop, so, during the utility model application, can avoid the microprocessor of monitoring terminal in power transmission line monitoring system to monitoring center's transmission undesired signal, to affect the accuracy of monitoring, guarantee normally carrying out of transmission line of electricity monitoring.
(2) the utility model also comprises pressure limiting circuit, wherein, pressure limiting circuit comprises the first diode and the second diode, the first diode cathode and the second diode cathode are all connected on the circuit between the first resistance and filtering circuit input end, the first diode cathode and the equal ground connection of the second diode cathode, during the utility model application, can carry out low-voltage restriction by the first diode and the second diode pair input signal, play the effect of raising signal level, can further reduce interference.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a specific embodiment of the utility model.
In accompanying drawing, the corresponding name of Reference numeral is called: C1, the first electric capacity, C2, the second electric capacity, C3, the 3rd electric capacity, VCC, power supply, R1, the first resistance, R2, the first resistance, R3, the 3rd resistance, R4, the 4th resistance, R5, the 5th resistance, R6, the 6th resistance, R7, the 7th resistance, R8, the 8th resistance, D1, the first diode, D2, the second diode, A1, the first comparer, OC1, photoelectrical coupler.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done to detailed description further, but embodiment of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1, for regulating the module of power transmission line monitoring system collection signal, comprise elementary buffer circuit, pressure limiting circuit, filtering circuit, the first comparer A1 and photoelectric isolating circuit, wherein, in the present embodiment, the model of the first comparer A1 is LM2903, the power pin that it is provided with the ground pin of ground connection and meets power supply VCC.Elementary buffer circuit comprises that the first capacitor C 1 and the first resistance R 1, the first resistance R 1 two ends are connected with the first capacitor C 1 with filtering circuit input end respectively.In the present embodiment, the capacitance of the first capacitor C 1 is 0.1uF, and the resistance of the first resistance R 1 is 10K Ω.The pressure limiting circuit of the present embodiment comprises the first diode D1 and the second diode D2, the first diode D1 negative pole and the second diode D2 positive pole are all connected on the circuit between the first resistance R 1 and filtering circuit input end, the first diode D1 positive pole and equal ground connection of the second diode D2 negative pole.The filtering circuit output terminal of the present embodiment is connected with the inverting input of the first comparer A1, and photoelectric isolating circuit is connected with the output terminal of the first comparer A1.The present embodiment also comprises that the capacitance of the 3rd capacitor C 3, the three capacitor C 3 is 0.1uF, and the 3rd capacitor C 3 one end are connected on the circuit between the first comparer A1 and power supply VCC, its other end ground connection.
The filtering circuit of the present embodiment comprises the second resistance R 2 and the second capacitor C 2, wherein, the resistance of the second resistance R 2 is 10K Ω, the capacitance of the second capacitor C 2 is 0.001 uF, the second resistance R 2 two ends are respectively as the input and output side of filtering circuit, the second resistance R 2 two ends are connected with the first comparer A1 inverting input with the first resistance R 1 respectively, and second capacitor C 2 one end are connected on the circuit between the second resistance R 2 and the first comparer A1 inverting input, its other end ground connection.
The present embodiment also comprises the 4th resistance R 4, the 6th resistance R 6 and the 7th resistance R 7, and wherein, the resistance of the 4th resistance R 4 is 4 K Ω, and the 6th resistance R 6 and both resistances of the 7th resistance R 7 are 3.3 K Ω.The 4th resistance R 4 two ends are connected with output terminal with the in-phase input end of the first comparer A1 respectively, the 6th resistance R 6 one end are connected on the first comparer A1 output terminal, its other end external power supply VCC, the 7th resistance R 7 one end are connected on the circuit between the first comparer A1 in-phase input end and the 4th resistance R 4, its other end ground connection.
The photoelectric isolating circuit of the present embodiment comprises photoelectrical coupler OC1, the 3rd resistance R 3, the 5th resistance R 5 and the 8th resistance R 8, wherein, in the present embodiment, the model of photoelectrical coupler OC1 is PS2501-1, it is provided with four pins, the resistance of the 5th resistance R 5 is 4 K Ω, and the 8th resistance R 8 and both resistances of the 3rd resistance R 3 are 1 K Ω.Photoelectric isolating circuit is connected with the first comparer A1 output terminal by the 5th resistance R 5, the other end that the 5th resistance R 5 connects the first comparer A1 end is relatively connected with the second pin of photoelectrical coupler OC1, the 3rd resistance R 3 two ends connect respectively the 4th pin and the power supply VCC of photoelectrical coupler OC1, the 8th resistance R 8 two ends connect respectively the first pin and the power supply VCC of photoelectrical coupler OC1, the three-prong ground connection of photoelectrical coupler OC1.In the present embodiment, the 3rd resistance R 3 the 6th resistance R 6, the 8th resistance R 8 and the first comparer A1 are powered by same power supply VCC.
During the present embodiment application, the first capacitor C 1 connects the other end external sensor of the first resistance R 1 end relatively, the microprocessor of monitoring terminal in the external power transmission line monitoring system of the 4th pin of photoelectrical coupler OC1, the signal that sensor gathers is handed over every straight-through through the first capacitor C 1, pressure limiting circuit through the first diode D1 and the second diode D2 formation carries out low voltage limit again, then through the first comparer A1 shaping and photoelectrical coupler OC1, carry out signal isolation, last input microprocessor successively.
As mentioned above, can realize preferably the utility model.
Claims (5)
1. for regulating the module of power transmission line monitoring system collection signal, it is characterized in that, comprise elementary buffer circuit, pressure limiting circuit, filtering circuit, the first comparer (A1) and photoelectric isolating circuit, described elementary buffer circuit comprises the first electric capacity (C1) and the first resistance (R1), and described the first resistance (R1) two ends are connected with the first electric capacity (C1) with filtering circuit input end respectively; Described pressure limiting circuit comprises the first diode (D1) and the second diode (D2), the first diode (D1) negative pole and the second diode (D2) positive pole are all connected on the circuit between the first resistance (R1) and filtering circuit input end, the first diode (D1) positive pole and the equal ground connection of the second diode (D2) negative pole; Described filtering circuit output terminal is connected with the inverting input of the first comparer (A1), and described photoelectric isolating circuit is connected with the output terminal of the first comparer (A1).
2. according to claim 1 for regulating the module of power transmission line monitoring system collection signal, it is characterized in that, described filtering circuit comprises the second resistance (R2) and the second electric capacity (C2), described the second resistance (R2) two ends are connected with the first comparer (A1) inverting input with the first resistance (R1) respectively, the second electric capacity (C2) one end is connected on the circuit between the second resistance (R2) and the first comparer (A1) inverting input, its other end ground connection.
3. according to claim 1 for regulating the module of power transmission line monitoring system collection signal, it is characterized in that, also comprise the 3rd electric capacity (C3), described the first comparer (A1) is connected with power supply (VCC), described the 3rd electric capacity (C3) one end is connected on the circuit between the first comparer (A1) and power supply (VCC), its other end ground connection.
4. according to claim 3 for regulating the module of power transmission line monitoring system collection signal, it is characterized in that, described photoelectric isolating circuit comprises photoelectrical coupler (OC1), the 3rd resistance (R3), the 5th resistance (R5) and the 8th resistance (R8), described the 3rd resistance (R3) two ends connect respectively the 4th pin and the power supply (VCC) of photoelectrical coupler (OC1), the 5th resistance (R5) two ends are connected with the second pin of photoelectrical coupler (OC1) with the first comparer (A1) output terminal respectively, the 8th resistance (R8) two ends connect respectively the first pin and the power supply (VCC) of photoelectrical coupler (OC1), the three-prong ground connection of described photoelectrical coupler (OC1).
According to described in any one in claim 1～4 for regulating the module of power transmission line monitoring system collection signal, it is characterized in that, also comprise the 4th resistance (R4), the 6th resistance (R6) and the 7th resistance (R7), described the 4th resistance (R4) two ends are connected with output terminal with the in-phase input end of the first comparer (A1) respectively, the 6th resistance (R6) one end is connected on the first comparer (A1) output terminal, its other end external power supply (VCC), the 7th resistance (R7) one end is connected on the circuit between the first comparer (A1) in-phase input end and the 4th resistance (R4), its other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258821.0U CN203837725U (en) | 2014-05-21 | 2014-05-21 | Module for adjusting acquired signal in monitoring system of electric transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258821.0U CN203837725U (en) | 2014-05-21 | 2014-05-21 | Module for adjusting acquired signal in monitoring system of electric transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837725U true CN203837725U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420258821.0U Expired - Fee Related CN203837725U (en) | 2014-05-21 | 2014-05-21 | Module for adjusting acquired signal in monitoring system of electric transmission line |
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| CN (1) | CN203837725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100806A (en) * | 2016-08-09 | 2016-11-09 | 珠海凌达压缩机有限公司 | Anti-jamming circuit and data acquisition equipment |
-
2014
- 2014-05-21 CN CN201420258821.0U patent/CN203837725U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100806A (en) * | 2016-08-09 | 2016-11-09 | 珠海凌达压缩机有限公司 | Anti-jamming circuit and data acquisition equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |