CN218601454U

CN218601454U - Sensing circuit and binding post based on electric field induction is got electricity

Info

Publication number: CN218601454U
Application number: CN202223043996.3U
Authority: CN
Inventors: 张骁谋; 叶锦宏
Original assignee: Chengdu Xingshengde Electric Engineering Co ltd
Current assignee: Chengdu Xingshengde Electric Engineering Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-10
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a sensing circuit and a connecting terminal based on electric field induction electricity taking, which comprises a connecting terminal, wherein a groove for placing a circuit board is arranged on the connecting terminal; elbow connectors are further arranged on the two sides of the wiring terminal; the elbow connector comprises an outer semi-conductive layer and an inner semi-conductive layer; the circuit board is a sensor circuit carrier and comprises a rectifying circuit, a protection circuit, a DC-DC converter, an SOR sensor, a conditioning circuit and a wireless communication circuit. An object of the utility model is to provide a sensing circuit based on electric field induction is got electricity realizes responding to survey electricity through setting up the elbow type connector in the binding post outside, has both avoided contact failure's emergence, has also improved measuring accuracy. Meanwhile, when the output of the rectifying circuit is utilized, if the equivalent impedance of the sensor is infinite, the direct-current output voltage of the rectifying circuit can be adjusted by adjusting the sizes of the series compensation capacitor and the parallel compensation capacitor.

Description

Sensing circuit and binding post based on electric field induction is got electricity

Technical Field

The utility model relates to a distribution network detects technical field, concretely relates to sensing circuit and binding post based on electric field induction is got electricity.

Background

The digital sensor of the power distribution network is used for detecting the operation condition of the power distribution network, discovering potential safety hazards in advance and providing data support for the safe operation protection of the power distribution network. The cable terminal joint of the power distribution network is a high fault occurrence point of the power distribution network. The existing intelligent sensor aiming at the terminal joint of the power distribution network mainly has two types: a rear blanking cover sensor of the separable connector and a cable terminal wiring terminal sensor. The rear blocking cover sensor of the separable connector is far away from the measured object, so that the measurement is inaccurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sensing circuit and binding post based on electric field induction is got electricity realizes responding to survey electricity through setting up the elbow type connector in the binding post outside, has both avoided contact fault's emergence, has also improved measuring accuracy.

The utility model discloses a following technical scheme realizes:

a sensing circuit based on electric field induction power taking comprises:

the device comprises a rectification circuit, a protection circuit, a DC-DC converter, an SOR sensor, a conditioning circuit and a wireless communication circuit; the rectification circuit, the protection circuit, the DC-DC converter, the SOR sensor, the conditioning circuit and the wireless communication circuit are sequentially connected in series.

As an alternative to this embodiment, the rectifying circuit comprises an AC-DC converter V _R And an external electrical component; external electric component and AC-DC converter V _R Are connected.

As an optional manner of this embodiment, the protection circuit includes a dc filter capacitor C _D And a voltage stabilizing diode D _Z D.c. filter capacitor C _D And a voltage regulator diode D _Z And the parallel connection is used for connecting the rectifying circuit and the DC-DC converter.

As an alternative of this embodiment, the DC-DC converter is connected in series with the wireless communication circuit, and the other end of the wireless communication circuit is further connected to an antenna ANT.

As an optional manner of this embodiment, the wireless communication circuit includes an MCU chip and a radio frequency circuit, and is used to implement radio communication with the antenna ANT.

As an optional manner of this embodiment, the SOR sensor is disposed on a path from the DC-DC converter to the MCU chip, and is connected to the MCU chip through the conditioning circuit.

On the other hand, this embodiment still provides a binding post, is equipped with the circuit board on its casing, is equipped with foretell a sensing single pass based on electric field induction gets electricity on the circuit board, still includes:

the elbow connectors are arranged on two sides of the wiring terminal; the elbow connector includes an outer semiconductive layer and an inner semiconductive layer.

As an optional mode of this embodiment, the housing of the connection terminal is further provided with a groove for placing the circuit board; the elbow connectors are symmetrically arranged on both sides of the terminal, which respectively bring the side with the inner semi-conducting layer close to the terminal.

As an optional way of this embodiment, the elbow connector is further provided with an insulating layer and a capacitor plate, and the capacitor plate, the outer semi-conducting layer and the inner semi-conducting layer together form an induction capacitor; the capacitor plate is connected with the power input end of the circuit board.

As an optional manner of this embodiment, the surface of the capacitor plate is further coated with an insulating material with a withstand voltage greater than 25V.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the elbow type connector is arranged on the outer side of the wiring terminal to achieve induction electricity detection, so that contact faults are avoided, and the accuracy of measurement is improved. Meanwhile, when the output of the rectifying circuit is utilized, if the equivalent impedance of the sensor is infinite, the series compensation capacitor C can be adjusted _S And a parallel compensation capacitor C _P The direct current output voltage of the rectifying circuit is adjusted according to the magnitude of the voltage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

fig. 1 is a schematic structural view of a connection terminal provided in an embodiment of the present invention;

fig. 2 is a schematic view of a fitting structure of a connection terminal and an elbow connector according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a circuit board circuit structure provided by an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-connecting terminal, 2-groove, 3-circuit board, 41-outer semi-conducting layer, 42-insulating layer, 43-inner semi-conducting layer and 5-capacitor plate.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given for further details of the present invention with reference to the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention, and are not intended to limit the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present embodiment provides a sensing circuit and a connection terminal based on electric field induction power taking, including a connection terminal 1, where the connection terminal 1 is a copper standard component, and a groove 2 for placing a circuit board 3 is formed on an outer shell thereof; elbow connectors are further arranged on the two sides of the wiring terminal 1; the elbow connector comprises an outer semiconducting layer 41 and an inner semiconducting layer 43.

Wherein, recess 2 is used for placing circuit board 3, avoids circuit board 3 protrusion, causes the increase of line nose external diameter, influences the installation. Can be obtained by crimping with wire nose crimping pliers. The groove 2 is not necessary, and the groove 2 is added only when the number of squares of the wire nose is large and the installation space is limited. In this embodiment, referring again to fig. 1, the elbow connector is symmetrically disposed on both sides of the terminal 1, and the side having the inner semi-conductive layer 43 is adjacent to the terminal 1. The elbow connector has an outer semiconducting layer 41 for connection to the earth of the distribution network, and is further provided with an insulating layer 42 and a capacitor plate 5, the insulating layer 42 serving to isolate the outer semiconducting layer 41 from an inner semiconducting layer 43. The outer surface of the capacitor plate 5 is coated with an insulating material, and the withstand voltage of the capacitor plate can be more than 25V. Together with the elbow connector inner and outer

semi-conducting layers

43, 41 form an inductive capacitance. The capacitor plate 5 is connected to the power input of the circuit board 3.

The circuit board 3 is a sensor circuit carrier and comprises a rectifying circuit, a protection circuit, a DC-DC converter, an SOR sensor, a conditioning circuit and a wireless communication circuit. The wireless communication circuit comprises an MCU chip and a radio frequency circuit and is used for realizing wireless communication by matching with an antenna ANT. The wireless communication circuit may also be an active RFID unit communication circuit, and the embodiment is not limited. The rectifier circuit is used for converting alternating current into direct current, and the protection circuit is used for preventing the output of the rectifier circuit from overvoltage; the DC-DC converter is used for converting the input direct current into a power supply required by a post-stage system; the SOR sensor is used for collecting required data, and the sensing comprises but is not limited to a temperature sensor, a partial discharge sensor, a video sensor, a noise sensor, a light sensor, a voltage and current sensor and the like; the conditioning circuit is used for converting the output signal of the sensor into an electric signal which can be processed by the microcontroller, and the conversion process comprises but is not limited to filtering, amplitude conversion, phase shift conversion, bias, frequency mixing, orthogonal conversion and the like; the MCU chip is used for processing sensor data, and comprises tasks such as but not limited to data preprocessing, feature extraction, data identification, data compression and the like; radio frequency circuits are used for radio communication.

In this embodiment, the rectifying circuit includes an AC-DC converter VR, a capacitor plate 5 and a terminal; the capacitor plate 5 and the connecting terminal are respectively connected with the AC-DC converter VR. The protection circuit comprises a direct current filter capacitor CD and a voltage stabilizing diode DZ, wherein the direct current filter capacitor CD and the voltage stabilizing diode DZ are connected in parallel and used for connecting the rectifying circuit and the DC-DC converter. The DC-DC converter is connected in series with the wireless communication circuit, and the other end of the wireless communication circuit is also connected with an antenna ANT. The SOR sensor is arranged on a path from the DC-DC converter to the MCU chip and is connected with the MCU chip through the conditioning circuit. The conditioning circuit in this embodiment is a signal conditioning circuit ADJ. In this embodiment, when the output of the rectifying circuit is utilized, if the equivalent impedance of the sensor is infinite, the dc output voltage of the rectifying circuit can be adjusted by adjusting the magnitudes of the series compensation capacitor CS and the parallel compensation capacitor CP.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A sensing circuit based on electric field induction power taking is characterized by comprising:

2. The electric field induction power-based sensing circuit according to claim 1, wherein the rectifying circuit comprises an AC-DC converter V _R And an external electrical component; the external electrical component and an AC-DC converter V _R Are connected.

3. The electric field induction electricity taking-based sensing circuit as claimed in claim 2, wherein the protection circuit comprises a DC filter capacitor C _D And a voltage regulator diode D _Z D.C. filter capacitor C _D And a voltage regulator diode D _Z And the parallel connection is used for connecting the rectifying circuit and the DC-DC converter.

4. The electric field induction power taking-based sensing circuit as claimed in claim 3, wherein the DC-DC converter is connected in series with the wireless communication circuit, and an antenna ANT is further connected to the other end of the wireless communication circuit.

5. The electric field induction electricity taking-based sensing circuit as claimed in claim 4, wherein the wireless communication circuit comprises an MCU chip and a radio frequency circuit, and is used for realizing radio communication by matching with an antenna ANT.

6. The electric field induction power-based sensing circuit according to claim 5, wherein an SOR sensor is arranged on a path from the DC-DC converter to the MCU chip and is connected with the MCU chip through the conditioning circuit.

7. A connection terminal, a circuit board is arranged on a shell of the connection terminal, and a sensing single circuit based on electric field induction power taking according to claims 1 to 6 is arranged on the circuit board, and the connection terminal further comprises:

elbow connectors disposed on both sides of the connection terminal; the elbow connector includes an outer semiconductive layer and an inner semiconductive layer.

8. The connecting terminal according to claim 7, wherein a groove for placing a circuit board is further formed on the housing of the connecting terminal; the elbow connectors are symmetrically arranged on two sides of the connecting terminal, and one side of each elbow connector, which is provided with the inner semi-conducting layer, is close to the connecting terminal.

9. The connecting terminal according to claim 7, wherein the elbow connector is further provided with an insulating layer and a capacitor plate, and the capacitor plate, the outer semi-conductive layer and the inner semi-conductive layer together form an induction capacitor; the capacitor plate is connected with the power input end of the circuit board.

10. A terminal according to claim 9, wherein the capacitor plates are further coated with an insulating material having a withstand voltage of greater than 25 volts.