CN213843371U - Grounding voltage pulse detection device based on 5G - Google Patents
Grounding voltage pulse detection device based on 5G Download PDFInfo
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- CN213843371U CN213843371U CN202022884986.7U CN202022884986U CN213843371U CN 213843371 U CN213843371 U CN 213843371U CN 202022884986 U CN202022884986 U CN 202022884986U CN 213843371 U CN213843371 U CN 213843371U
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Abstract
The utility model discloses a grounding voltage pulse detection device based on 5G realizes that two way ground pulse signal detect the function simultaneously for NE 521D's comparator based on the model. In each detection circuit, the voltage difference of signals at two input ends is compared with an internal reference voltage, the comparison result is displayed by the voltage at the output end, and the detection circuit is simple in structure and can effectively detect small-amplitude and high-frequency grounding voltage pulse signals. The external signal input end is connected with a resistor which is grounded, and the reference power supply input end adjusts the sensitivity of the circuit to external input signals by adjusting the input voltage. The two power supply input ends are respectively connected with two filter capacitors in parallel, so that the working circuit is stable in voltage and free of noise waves.
Description
Technical Field
The utility model relates to a grounding voltage detection device.
Background
The grounding device is a generic term for a grounding body and a grounding wire connected to an electrical apparatus. The grounding body is a metal conductor buried underground and directly contacted with the ground, and the grounding wire is a conductor connected with the metal shell of the electrical equipment and the grounding body. When the electrical equipment in operation has a ground fault, the ground current flows through the ground wire and the grounding body and is dispersed to the ground in a hemispherical shape. The closer to the ground, the smaller the hemisphere surface is, the higher the resistance is, and the voltage drop when the ground current flows through the hemisphere surface is also large, so that the potential is high. On the other hand, in a place away from the ground, since the hemisphere surface is large, the resistance is small, and the potential is low. The ground voltage, that is, the potential difference between the housing, ground line, ground body, etc. of the ground device and the zero potential point when the electrical device has a ground fault, is referred to as the ground voltage when the electrical device is grounded. At present, a grounding voltage detection circuit capable of detecting a small-amplitude high-frequency pulse signal does not exist.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the prior art, the grounding voltage pulse detection device based on 5G is provided, and two paths of grounding pulse signals with small amplitude and high frequency can be detected simultaneously.
The technical scheme is as follows: a ground voltage pulse detection device based on 5G comprises an NE521D comparator, resistors R1-R11, a capacitor C1, a capacitor C2, a capacitor C5, a capacitor C6, a capacitor C9, a triode Q1 and an adjustable resistor VR 1; pin 14 and pin 13 of the NE521D comparator are respectively connected with external positive and negative voltages; a pin 11 of the NE521D comparator is used for connecting an external first path pulse input signal, and a resistor R4 is connected with the pin 11 and the ground; a pin 12 of the NE521D comparator is sequentially connected with a resistor R10 and a resistor R11 in series and then connected with an emitter of a triode Q1, a collector of the triode Q1 is connected with one fixed end of an adjustable resistor VR1, a base of the triode Q1 is connected with an adjustable end of the adjustable resistor VR1 and an external positive voltage, and the other end of the triode Q1 is grounded; the capacitor C5 and the resistor R7 are respectively connected in parallel between the pin 12 of the NE521D comparator and the ground, the capacitor C1 and the resistor R3 are respectively connected in parallel between the pin 9 and the pin 12 of the NE521D comparator, and the pin 9 of the NE521D comparator is used as the output end of the first detection circuit and is connected to the 5G communication module; pin 8 of NE521D is connected to external positive voltage via resistor R1;
Further, the capacitor C3, the capacitor C4, the capacitor C7 and the capacitor C8 are included; the positive electrode of the capacitor C3 and one end of the capacitor C4 are connected with the pin 14 of the NE521D comparator, the negative electrode of the capacitor C3 and the other end of the capacitor C4 are grounded, the negative electrode of the capacitor C7 and one end of the capacitor C8 are connected with the pin 13 of the NE521D comparator, and the positive electrode of the capacitor C7 and the other end of the capacitor C8 are grounded.
Furthermore, the capacitor C9 is further included, one end of the capacitor C9 is connected with the common connection end of the resistor R10 and the resistor R11, and the other end of the capacitor C9 is grounded.
Has the advantages that: the utility model discloses a grounding voltage pulse detection device based on 5G realizes two way ground signal and detects the function simultaneously for NE 521D's comparator based on the model. The comparator consists of two comparison units with the same function, and each function unit consists of two signal input ends and a function control end. The voltage difference of the signals of the two input ends is compared with the internal reference voltage, the comparison result is displayed by the voltage of the output end, and the structure is simple, so that the small-amplitude and high-frequency grounding voltage pulse signals can be effectively detected. The external signal input end is connected with a resistor which is grounded, and the reference power supply input end adjusts the sensitivity of the circuit to external input signals by adjusting the input voltage. The two power supply input ends are respectively connected with two filter capacitors in parallel, so that the working circuit is stable in voltage and free of noise waves.
Drawings
Fig. 1 is a schematic circuit diagram of the ground voltage pulse detection device based on 5G of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in FIG. 1, the circuit forms a first detection circuit and a second detection circuit based on an NE521D comparator, and comprises an NE521D comparator, resistors R1-R11, capacitors C1-C9, a triode Q1 and an adjustable resistor VR 1. Wherein, pin 14 and pin 13 of the NE521D comparator are respectively connected with external +5V and-5V regulated power supplies; the positive electrode of the capacitor C3 and one end of the capacitor C4 are connected with the pin 14 of the NE521D comparator, and the negative electrode of the capacitor C3 and the other end of the capacitor C4 are grounded; the negative electrode of the capacitor C7 and one end of the capacitor C8 are connected with the pin 13 of the NE521D comparator, and the positive electrode of the capacitor C7 and the other end of the capacitor C8 are grounded. Pin 11 of the NE521D comparator is used for connecting an external first path pulse input signal, and a resistor R4 is connected with pin 11 and ground. The pin 12 of the NE521D comparator is connected in series with a resistor R10 and a resistor R11 in sequence and then connected with the emitter of a transistor Q1, the collector of the transistor Q1 is connected with one fixed end of an adjustable resistor VR1, the base of the transistor Q1 is connected with the adjustable end of the adjustable resistor VR1 and an external positive voltage, and the other end of the transistor Q1 is grounded. The capacitor C5 and the resistor R7 are respectively connected in parallel between the pin 12 of the NE521D comparator and the ground; the capacitor C1 and the resistor R3 are respectively connected in parallel between the pin 9 and the pin 12 of the NE521D comparator, and the pin 9 of the NE521D comparator is used as an output end of the first detection circuit and is connected to a data input end of the 5G communication module. Pin 8 of the NE521D comparator is connected to an external positive voltage via resistor R1. One end of the capacitor C9 is connected with the common connection end of the resistor R10 and the resistor R11, and the other end of the capacitor C9 is grounded.
The circuit can simultaneously realize the detection of two paths of grounding pulse signals, and each path of detection circuit respectively comprises a signal input end, an external reference voltage input end and an output end. The first path detection circuit is taken as an example to explain: positive and negative power input terminals of the comparator integrated circuit, namely, a power input terminal consisting of a pin 14, a pin 13 and capacitors C3, C4, C7 and C8; the two power supply input ends are respectively connected with two filter capacitors in parallel, so that the working circuit is stable in voltage and free of noise waves. A signal input terminal, namely an external detection signal input terminal consisting of a pin 11 and a resistor R4; an external reference voltage input end consisting of an adjustable resistor VR1, a triode Q1, resistors R7, R10, R11, capacitors C5 and C9 and a pin 12; the reference input voltage is adjusted by adjusting an external adjustable resistor, and the reference voltage input end is grounded by a capacitor to filter interference. The external signal input end is connected with a resistor which is grounded, and the reference power supply input end adjusts the sensitivity of the circuit to external input signals by adjusting the input voltage. Resistor R3, capacitor C1 and pin 9 form the output terminal. The voltage difference of signals of the two input ends is compared with the internal reference voltage, the output end is connected with the external reference voltage input end through a resistance-capacitance parallel circuit, the comparison result is displayed by the voltage of the output end, and the comparison result is the detection result of the external signal. The second path of detection circuit is similar to the first path of TEV detection circuit in structure and working principle.
The two detection circuits output signals to the 5G communication module, and detection data are sent to a remote monitoring center through the 5G communication module, so that the use scene of the device is expanded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The utility model provides a ground voltage pulse detection device based on 5G which characterized in that: the circuit comprises an NE521D comparator, resistors R1-R11, a capacitor C1, a capacitor C2, a capacitor C5, a capacitor C6, a capacitor C9, a triode Q1 and an adjustable resistor VR 1; pin 14 and pin 13 of the NE521D comparator are respectively connected with external positive and negative voltages; a pin 11 of the NE521D comparator is used for connecting an external first path pulse input signal, and a resistor R4 is connected with the pin 11 and the ground; a pin 12 of the NE521D comparator is sequentially connected with a resistor R10 and a resistor R11 in series and then connected with an emitter of a triode Q1, a collector of the triode Q1 is connected with one fixed end of an adjustable resistor VR1, a base of the triode Q1 is connected with an adjustable end of the adjustable resistor VR1 and an external positive voltage, and the other end of the triode Q1 is grounded; a capacitor C5 and a resistor R7 are respectively connected in parallel between a pin 12 of the NE521D comparator and the ground, a capacitor C1 and a resistor R3 are respectively connected in parallel between a pin 9 and a pin 12 of the NE521D comparator, and the pin 9 of the NE521D comparator is used as an output end of the first detection circuit and is connected to the 5G communication module; pin 8 of NE521D is connected to external positive voltage via resistor R1;
pin 2 of the NE521D comparator is used for connecting an external second path pulse input signal, and a resistor R6 is connected with pin 2 of the NE521D comparator and the ground; pin 1 of the NE521D comparator is connected in series with a resistor R9 and then connected to a common connection end of a resistor R10 and a resistor R11, a capacitor C6 and a resistor R8 are respectively connected in parallel between pin 1 of the NE521D comparator and the ground, a capacitor C2 and a resistor R5 are respectively connected in parallel between pin 4 and pin 1 of the NE521D comparator, and pin 4 of the NE521D comparator is used as an output end of a second detection circuit and connected to the 5G communication module; pin 5 and pin 6 of the NE521D comparator integrated circuit are connected to an external positive voltage via resistor R2.
2. The 5G-based ground voltage pulse detection device according to claim 1, characterized in that: the circuit also comprises a capacitor C3, a capacitor C4, a capacitor C7 and a capacitor C8; the positive electrode of the capacitor C3 and one end of the capacitor C4 are connected with the pin 14 of the NE521D comparator, the negative electrode of the capacitor C3 and the other end of the capacitor C4 are grounded, the negative electrode of the capacitor C7 and one end of the capacitor C8 are connected with the pin 13 of the NE521D comparator, and the positive electrode of the capacitor C7 and the other end of the capacitor C8 are grounded.
3. The 5G-based ground voltage pulse detection device according to claim 1, characterized in that: the capacitor C9 is further included, one end of the capacitor C9 is connected with the common connection end of the resistor R10 and the resistor R11, and the other end of the capacitor C9 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022884986.7U CN213843371U (en) | 2020-12-04 | 2020-12-04 | Grounding voltage pulse detection device based on 5G |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022884986.7U CN213843371U (en) | 2020-12-04 | 2020-12-04 | Grounding voltage pulse detection device based on 5G |
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| Publication Number | Publication Date |
|---|---|
| CN213843371U true CN213843371U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022884986.7U Active CN213843371U (en) | 2020-12-04 | 2020-12-04 | Grounding voltage pulse detection device based on 5G |
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| Country | Link |
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| CN (1) | CN213843371U (en) |
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- 2020-12-04 CN CN202022884986.7U patent/CN213843371U/en active Active
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