Intelligent lightning arrester monitoring circuit

Abstract

The utility model discloses an intelligent lightning arrester monitoring circuit, which is applied to a lightning arrester monitoring system and comprises a current acquisition circuit, a master control circuit and a first sampling circuit, and the current acquisition circuit is used for acquiring leakage current of a lightning arrester and outputting analog signals; the main control circuit is connected with the current acquisition circuit, and the main control circuit is provided with a multi-core chip and is used for receiving the analog signal to output a monitoring signal; the first sampling circuit is connected with the main control circuit, and is used for collecting the power supply voltage of the lightning arrester monitoring system and outputting the power supply voltage to the main control circuit. According to the utility model, the coupling of external devices can be reduced, the power consumption of the system is reduced, the power supply battery can work for a long time, the service life is prolonged, and the maintenance cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to an intelligent lightning arrester monitoring circuit. Background Art

[0002] A lightning arrester is an electrical appliance mainly used to protect electrical equipment from high transient overvoltage hazards and limit the follow-on time and often also limit the follow-on amplitude. In the related technology, the existing lightning arrester monitoring circuit adopts traditional monitoring technology, which leads to large battery loss, complex circuit and high cost. The large battery loss is because the traditional solution cannot reduce the power consumption of the system, and the operation requires a lot of energy, resulting in the battery being unable to work for a long time or the battery life is short, the equipment is frequently replaced, and the maintenance cost is high. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose an intelligent lightning arrester monitoring circuit, which is applied to a lightning arrester monitoring system, comprising:

[0004] A current collection circuit is used to collect the leakage current of the arrester and output an analog signal;

[0005] A main control circuit, the main control circuit is connected to the current acquisition circuit, the main control circuit has a multi-core chip, and is used to receive the analog signal to output a monitoring signal;

[0006] A first sampling circuit, wherein the first sampling circuit is connected to the main control circuit and is used for collecting the power supply voltage of the arrester monitoring system and outputting it to the main control circuit.

[0007] Preferably, the current collection circuit comprises an induction coil and a transistor U1 , the input end of the induction coil is connected to the lightning arrester, and the output end of the induction coil is connected to the transistor U1 .

[0008] Preferably, the current collection circuit has an indication module, and the indication module is connected to the induction coil, so that the indication module outputs an indication signal when collecting the leakage current of the lightning arrester.

[0009] Preferably, the main control circuit comprises a wireless transceiver module, the wireless transceiver module is communicatively connected to the current acquisition circuit, and an output end of the wireless transceiver module is connected to the multi-core chip.

[0010] Preferably, the wireless transceiver module comprises an antenna, a capacitor C3, an inductor L2, an inductor L6 and an inductor L7, and the antenna, the capacitor C3, the inductor L2, the inductor L6 and the inductor L7 are connected in series.

[0011] Preferably, the wireless transceiver module further includes a resistor R8 and a capacitor C6, and the resistor R8 and the capacitor C6 are connected in parallel with the inductor L7.

[0012] Preferably, a reference circuit is further included, and the reference circuit is respectively connected to the main control circuit and the current acquisition circuit to output a constant voltage to the main control circuit and the current acquisition circuit.

[0013] Preferably, it further comprises a second sampling circuit, which is connected to the main control circuit and is used for collecting the operating temperature of the arrester monitoring system and outputting it to the main control circuit.

[0014] The above solution of the utility model includes at least the following beneficial effects:

[0015] The intelligent lightning arrester monitoring circuit provided by the utility model is applied to the lightning arrester monitoring system. When the lightning arrester monitoring system is working, the leakage current of the lightning arrester can be collected by the current collection circuit and the analog signal can be output to the main control circuit, so that the main control circuit can receive the analog signal to realize signal reception and processing and output corresponding monitoring data, and the power supply voltage of the lightning arrester monitoring system can be collected by the first sampling circuit to determine the power supply status of the lightning arrester monitoring system. The multi-core chip can reduce the coupling of external devices, reduce the power consumption of the system, enable the power supply battery to work for a long time, extend the service life, and reduce the maintenance cost.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the intelligent lightning arrester monitoring circuit provided in the embodiment of the utility model;

[0019] Figure 2 is a circuit diagram of a current acquisition circuit provided in an embodiment of the utility model;

[0020] Figure 3 It is a circuit diagram of a main control circuit provided in an embodiment of the utility model;

[0021] Figure 4is a circuit diagram of a first sampling circuit provided in an embodiment of the utility model;

[0022] Figure 5 is a circuit diagram of a reference circuit provided in an embodiment of the utility model;

[0023] Figure 6 is a circuit diagram of a second sampling circuit provided in an embodiment of the utility model;

[0024] Figure 7 It is a circuit diagram of the indication module provided in the embodiment of the utility model;

[0025] Description of Figure Numbers:

[0026] 10. Current acquisition circuit; 11. Indication module; 20. Main control circuit; 21. Wireless transceiver module; 30. First sampling circuit; 40. Reference circuit; 50. Second sampling circuit.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The intelligent lightning arrester monitoring circuit of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0034] Reference Figures 1 to 7 As shown, the intelligent arrester monitoring circuit provided in the embodiment of the utility model is applied to the arrester monitoring system, including a current acquisition circuit 10, a main control circuit 20 and a first sampling circuit 30, the current acquisition circuit 10 is used to collect the leakage current of the arrester and output an analog signal; the main control circuit 20 is connected to the current acquisition circuit 10, and the main control circuit 20 has a multi-core chip for receiving the analog signal to output the monitoring signal; the first sampling circuit 30 is connected to the main control circuit 20, and is used to collect the arrester monitoring signal.

[0035] Among them, the multi-core chip can adopt the wireless chip UM2080 with M0 core, which simplifies the MCU processing and wireless transceiver circuit design, reduces the cost of equipment, and improves the reliability of data interaction. The lightning arrester monitoring system can be powered by a power supply battery. The first sampling circuit 30 is mainly used to sample the voltage of the power supply battery to determine the voltage condition of the power supply battery; the main control circuit 20 is mainly used for data reception and transmission and processing, so that when the current acquisition circuit 10 collects the leakage current of the lightning arrester, the analog signal can be processed through the main control circuit 20 to output the corresponding monitoring data.

[0036] The intelligent lightning arrester monitoring circuit provided by the utility model is applied to the lightning arrester monitoring system. When the lightning arrester monitoring system is working, the leakage current of the lightning arrester can be collected by the current collection circuit 10 and the analog signal can be output to the main control circuit 20, so that the main control circuit 20 can receive the analog signal to realize signal reception and processing and output the corresponding monitoring data, and the power supply voltage of the lightning arrester monitoring system can be collected by the first sampling circuit 30 to determine the power supply status of the lightning arrester monitoring system. The multi-core chip can reduce the coupling of external devices, reduce the power consumption of the system, enable the power supply battery to work for a long time, extend the service life, and reduce the maintenance cost.

[0037] Specifically, the current acquisition circuit 10 includes an induction coil and a transistor U1, wherein the input end of the induction coil is connected to the arrester, and the output end of the induction coil is connected to the transistor U1. The arrester is sensed and monitored by the induction coil, and when leakage current occurs in the arrester, the corresponding current can be acquired by the induction coil, and an analog signal can be output to the main control circuit 20 for processing. It can be understood that the analog signal can be amplified by the transistor U1, thereby improving the acquisition accuracy of the leakage current.

[0038] As an optional embodiment, the current acquisition circuit 10 has an indication module 11, which is connected to the induction coil so that the indication module 11 outputs an indication signal when the leakage current of the arrester is collected. The indication module 11 has an indicator light, and when the induction coil collects the leakage current of the arrester, the indication module 11 can control the indicator light to be powered on and illuminated, so that the user can know the status of the arrester in time.

[0039] Specifically, the main control circuit 20 includes a wireless transceiver module 21, which is communicatively connected to the current acquisition circuit 10, and the output end of the wireless transceiver module 21 is connected to the multi-core chip; further, the wireless transceiver module 21 includes an antenna, a capacitor C3, an inductor L2, an inductor L6 and an inductor L7, and the antenna, capacitor C3, inductor L2, inductor L6 and inductor L7 are connected in series with each other; wherein, the wireless transceiver module 21 also includes a resistor R8 and a capacitor C6, and the resistor R8 and the capacitor C6 are connected in parallel with the inductor L7.

[0040] In this embodiment, the main control circuit 20 can achieve communication connection with the current acquisition circuit 10 through the wireless transceiver module 21, so that when the leakage current is transmitted to the current acquisition circuit 10, the current acquisition circuit 10 can transmit the analog signal to the multi-core chip through the wireless transceiver module 21 for processing, and then output the corresponding monitoring data to inform the user.

[0041] Specifically, it also includes a reference circuit 40, which is connected to the main control circuit 20 and the current acquisition circuit 10 respectively to output a constant voltage to the main control circuit 20 and the current acquisition circuit 10. The reference circuit 40 is used to provide a voltage reference benchmark to the main control circuit 20 and the current acquisition circuit 10 to provide a stable voltage to the main control circuit 20 and the current acquisition circuit 10.

[0042] Furthermore, a second sampling circuit 50 is included, which is connected to the main control circuit 20 and is used to collect the operating temperature of the arrester monitoring system and output it to the main control circuit 20. The second sampling circuit 50 is used to collect the temperature inside the arrester monitoring system so that the user can know the operating temperature of the arrester monitoring system in time, and then the main control circuit 20 processes and outputs the corresponding temperature data.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An intelligent lightning arrester monitoring circuit, applied to a lightning arrester monitoring system, characterized in that: include: A current collection circuit is used to collect the leakage current of the arrester and output an analog signal; A main control circuit, the main control circuit is connected to the current acquisition circuit, the main control circuit has a multi-core chip, and is used to receive the analog signal to output a monitoring signal; A first sampling circuit, wherein the first sampling circuit is connected to the main control circuit and is used for collecting the power supply voltage of the arrester monitoring system and outputting it to the main control circuit.

2. The intelligent lightning arrester monitoring circuit according to claim 1, characterized in that: The current collection circuit includes an induction coil and a transistor U1 , the input end of the induction coil is connected to the lightning arrester, and the output end of the induction coil is connected to the transistor U1 .

3. The intelligent lightning arrester monitoring circuit according to claim 2, characterized in that: The current collection circuit has an indication module, and the indication module is connected to the induction coil so that the indication module outputs an indication signal when collecting the leakage current of the lightning arrester.

4. The intelligent lightning arrester monitoring circuit according to claim 1, characterized in that: The main control circuit includes a wireless transceiver module, the wireless transceiver module is communicatively connected to the current acquisition circuit, and an output end of the wireless transceiver module is connected to the multi-core chip.

5. The intelligent lightning arrester monitoring circuit according to claim 4, characterized in that: The wireless transceiver module includes an antenna, a capacitor C3, an inductor L2, an inductor L6 and an inductor L7. The antenna, the capacitor C3, the inductor L2, the inductor L6 and the inductor L7 are connected in series.

6. The intelligent lightning arrester monitoring circuit according to claim 5, characterized in that: The wireless transceiver module further includes a resistor R8 and a capacitor C6, and the resistor R8 and the capacitor C6 are connected in parallel with the inductor L7.

7. The intelligent lightning arrester monitoring circuit according to claim 1, characterized in that: It also includes a reference circuit, which is connected to the main control circuit and the current collection circuit respectively to output a constant voltage to the main control circuit and the current collection circuit.

8. The intelligent lightning arrester monitoring circuit according to claim 1, characterized in that: It also includes a second sampling circuit, which is connected to the main control circuit and is used to collect the operating temperature of the lightning arrester monitoring system and output it to the main control circuit.

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