CN212391555U - Testing device of direct current electroscope - Google Patents
Testing device of direct current electroscope Download PDFInfo
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- CN212391555U CN212391555U CN202020587739.8U CN202020587739U CN212391555U CN 212391555 U CN212391555 U CN 212391555U CN 202020587739 U CN202020587739 U CN 202020587739U CN 212391555 U CN212391555 U CN 212391555U
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Abstract
The utility model relates to the technical field of direct current electroscope, in particular to a testing device of a direct current electroscope, which comprises a first testing circuit, a second testing circuit and a third testing circuit, wherein the first testing circuit is connected with an alarm circuit of the direct current electroscope and is used for testing the starting voltage and the starting current of the alarm circuit; the second test circuit is connected with the resistance rod of the direct current electroscope and used for testing the resistance value of the resistance rod; and the controller is respectively connected with the first test circuit and the second test circuit and used for outputting the starting voltage of the direct current electroscope according to the starting voltage and the starting current of the alarm circuit and the resistance value of the resistance rod so as to finish the test of the direct current electroscope. The utility model discloses a set up first, second test circuit, separately test alarm circuit's warning current, resistance of resistance pole for when alarm circuit send alarm signal, apply the voltage low at the alarm circuit both ends, and then testable alarm circuit's starting voltage and starting current, resistance pole's resistance under the low-pressure, the completion tests out direct current electroscope's starting voltage.
Description
Technical Field
The utility model relates to a technical field of direct current electroscope, in particular to testing arrangement of direct current electroscope.
Background
According to relevant regulations, the direct current electroscope has to be tested on electrified equipment or equipment with corresponding test conditions before use, and the electricity testing detection of the equipment is carried out after the fact that the acousto-optic signal of the direct current electroscope is normal and works well is confirmed, so that the accuracy of the electricity testing result of the equipment and the safety of the equipment are ensured.
The direct current electroscope is internally provided with the alarm circuit and the resistance rod which are connected in series, but because the resistance value of the resistance rod is very large, the test device for testing the direct current electroscope in the market often utilizes high voltage to test the starting voltage of the direct current electroscope. The test process comprises the steps of calculating the voltage at two ends of the alarm circuit and the voltage at two ends of the resistance rod according to the current (namely the starting current of the direct current electroscope), the resistance value of the alarm circuit and the resistance value of the resistance rod in the series circuit when the alarm circuit gives an alarm, and the test device can test the starting voltage of the direct current electroscope according to the sum of the voltages at two ends of the alarm circuit and the resistance rod. However, the process of generating high voltage has certain danger, which is not beneficial to ensuring the personal safety of the tester.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a testing arrangement of direct current electroscope, this testing arrangement need not the test that direct current electroscope can be accomplished to high voltage, safe in utilization.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a test apparatus for a dc electroscope, comprising:
the first test circuit is connected with the alarm circuit of the direct current electroscope and used for testing the starting voltage and the starting current of the alarm circuit;
the second test circuit is connected with a resistance rod of the direct current electroscope and used for testing the resistance value of the resistance rod;
and the controller is respectively connected with the first test circuit and the second test circuit and is used for outputting the starting voltage of the direct current electroscope according to the starting voltage and the starting current of the alarm circuit and the resistance value of the resistance rod so as to finish the test of the direct current electroscope.
Preferably, the method further comprises the following steps: and the voltage stabilizing circuit is respectively connected with the first test circuit and the second test circuit and is used for stabilizing the input voltage of the first test circuit and the second test circuit.
Preferably, the method further comprises the following steps: and the display is connected with the controller and used for displaying the starting voltage.
Preferably, the method further comprises the following steps: and the A/D conversion circuit is connected between the first test circuit and the controller and between the second test circuit and the controller.
Preferably, the voltage stabilizing circuit comprises: the circuit comprises a voltage stabilizing chip, a first capacitor and a second capacitor; wherein the content of the first and second substances,
the input end of the voltage stabilizing chip is connected with the positive electrode of the power supply, and the grounding end of the voltage stabilizing chip is connected with the negative electrode of the power supply;
one end of the first capacitor is connected with the input end of the voltage stabilizing chip, and the other end of the first capacitor is connected with the negative electrode of the power supply;
one end of the second capacitor is connected with the output end of the voltage stabilizing chip, and the other end of the second capacitor is connected with the negative electrode of the power supply.
Preferably, the first test circuit includes: the device comprises an adjustable resistor, a second resistor, a first voltage sensor and a second voltage sensor;
one end of the adjustable resistor is connected with the output end of the voltage stabilizing circuit, the other end of the adjustable resistor is arranged in a suspended mode, and the sliding end of the adjustable resistor is connected with the alarm circuit;
one end of the second resistor is connected with the alarm circuit, and the other end of the second resistor is connected with the negative electrode of the power supply;
the first voltage sensor is connected with the output end of the voltage stabilizing chip through the sliding end of the adjustable resistor, and the first voltage sensor is also connected with the A/D conversion circuit;
the second voltage sensor is connected with the negative electrode of the power supply through the second resistor, and the second voltage sensor is also connected with the A/D conversion circuit.
Preferably, the second test circuit includes: a third resistor, a third voltage sensor;
one end of the third resistor is connected with the resistor rod, and the other end of the third resistor is connected with the negative electrode of the power supply;
the third voltage sensor is connected with the negative electrode of the power supply through the third resistor, and the third voltage sensor is also connected with the A/D conversion circuit.
Preferably, the test device further comprises a portable box body, wherein the first test circuit, the second test circuit, the controller, the voltage stabilizing circuit and the A/D conversion circuit are arranged in the portable box body; the first test circuit is connected with the alarm circuit through a first test probe, and the second test circuit is connected with the resistance rod through a second test probe.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up first test circuit and second test circuit, separately test alarm circuit's alarm current and voltage, the resistance of resistance pole, because the inside resistance of alarm circuit is for the resistance of the series circuit of alarm circuit and resistance pole many less, make when alarm circuit sends alarm signal, the voltage of applying at the alarm circuit both ends is much less than the voltage of applying in the series circuit of alarm circuit and resistance pole, and then make starting voltage and the starting current that can test out alarm circuit under low-pressure, the resistance of resistance pole, and then test out direct current electroscope's starting voltage. Because the voltage applied to the two ends of the alarm circuit is much smaller than the high-voltage pulse, the personal safety of testers is further ensured.
Drawings
The present invention will now be further described with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a circuit diagram of the present invention.
In the figure:
1. a voltage stabilization chip; 2. an alarm circuit; 3. a resistance rod; 4. a first voltage sensor; 5. a second voltage sensor; 6. a third voltage sensor; 7. an A/D conversion chip; 8. a controller; 9. a display; 10. and a direct current electroscope.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1, the present embodiment discloses a test apparatus for a dc electroscope 10, including:
the first test circuit is connected with the alarm circuit 2 of the direct current electroscope 10 and used for testing the starting voltage and the starting current of the alarm circuit 2;
the second test circuit is connected with the resistance rod 3 of the direct current electroscope 10 and used for testing the resistance value of the resistance rod 3;
and the controller 8 is respectively connected with the first test circuit and the second test circuit and is used for outputting the starting voltage of the direct current electroscope 10 according to the starting voltage and the starting current of the alarm circuit 2 and the resistance value of the resistance rod 3 so as to finish the test of the direct current electroscope 10.
This embodiment is through setting up first test circuit and second test circuit, separately test alarm circuit 2's alarm current, resistance rod 3's resistance, because alarm circuit 2's inside resistance is for alarm circuit 2 and resistance rod 3's series circuit's resistance is little a lot, make when alarm circuit 2 sends alarm signal, the voltage of applying at alarm circuit 2 both ends is much less than the voltage of applying in alarm circuit 2 and resistance rod 3's series circuit, and then make can test alarm circuit 2's starting voltage and starting current under the low pressure, resistance rod 3's resistance, and then test out direct current electroscope 10's starting voltage. Because the voltage applied to the two ends of the alarm circuit 2 is much smaller than the high-voltage pulse, the personal safety of the testers is further ensured.
In the present embodiment, the device further comprises a voltage stabilizing circuit, an A/D conversion circuit, and a display 9,
the voltage stabilizing circuit is respectively connected with the first test circuit and the second test circuit and is used for stabilizing the input voltage of the first test circuit and the second test circuit; the A/D conversion circuit is connected between the first test circuit and the controller 8 and between the second test circuit and the controller 8; the display 9 is connected to the controller 8 for displaying the start voltage. The A/D conversion circuit is an A/D conversion chip 7.
This embodiment is through setting up display 9 for can directly show by test electrical apparatus starting voltage, and then accurate reflection electroscope performance, and ensure personal safety.
In this embodiment, the voltage regulator circuit includes: the voltage stabilizing chip 1, the first capacitor C1 and the second capacitor C2; the input end of the voltage stabilizing chip 1 is connected with the positive electrode of a power supply, and the grounding end is connected with the negative electrode of the power supply; one end of the first capacitor C1 is connected with the input end of the voltage stabilizing chip 1, and the other end is connected with the negative electrode of the power supply; one end of the second capacitor C2 is connected with the output end of the voltage stabilizing chip 1, and the other end is connected with the negative electrode of the power supply.
In this implementation, the first test circuit includes: the adjustable resistor R1, the second resistor R2, the first voltage sensor 4 and the second voltage sensor 5; one end of the adjustable resistor R1 is connected with the output end of the voltage stabilizing circuit, the other end of the adjustable resistor R1 is arranged in a hanging way, and the sliding end of the adjustable resistor R1 is connected with the alarm circuit 2; one end of the second resistor R2 is connected with the alarm circuit 2, and the other end is connected with the negative pole of the power supply; the first voltage sensor 4 is connected with the output end of the voltage stabilizing chip 1 through the sliding end of the adjustable resistor R1, and the first voltage sensor 4 is also connected with an A/D conversion circuit; the second voltage sensor 5 is connected with the negative pole of the power supply through a second resistor R2, and the second voltage sensor 5 is also connected with an A/D conversion circuit.
In this implementation, the second test circuit includes: a third resistor R3, a third voltage sensor 6; one end of the third resistor R3 is connected with the resistance rod 3, and the other end is connected with the negative pole of the power supply; the third voltage sensor 6 is connected with the negative pole of the power supply through a third resistor R3, and the second voltage sensor 5 is also connected with an A/D conversion circuit.
In the implementation, the testing device further comprises a portable box body, wherein the first testing circuit, the second testing circuit, the controller 8, the voltage stabilizing circuit and the A/D conversion circuit are arranged in the portable box body; the first test circuit is connected with the alarm circuit 2 through a first test probe, and the second test circuit is connected with the resistance rod 3 through a second test probe.
The whole appearance of the device of the embodiment adopts a portable box body structure, the inside of the box seat body can contain and seal the test circuit, the output terminal of the test circuit is reasonably arranged on the control panel, and the control panel effectively isolates the test circuit. The output of the testing device is stable and can be accurately adjusted, and the safety of equipment and electroscope test products can be ensured; and small, light in weight, can ensure personal safety, is applicable to various scene, realizes carrying out quality control to direct current electroscope 10.
In the testing process, a power switch of the device is turned on, the display screen displays the display content, the first testing circuit is respectively connected to the positive electrode and the negative electrode of the alarm circuit 2 through the first testing probe, and the second testing circuit is connected to the two ends of the resistance rod 3 through the second testing probe; rotating the adjusting knob until the electroscope gives an alarm, and stopping rotating the adjusting knob, wherein the number displayed by the display screen is the starting voltage value of the electroscope; after the data is recorded, the power supply of the device is turned off, the output test probe is removed, and the test data is compared with the standard of the electroscope to determine whether the electroscope is qualified or not so as to complete the detection of the direct current electroscope 10.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (8)
1. A test device of a direct current electroscope, comprising:
the first test circuit is connected with the alarm circuit of the direct current electroscope and used for testing the starting voltage and the starting current of the alarm circuit;
the second test circuit is connected with a resistance rod of the direct current electroscope and used for testing the resistance value of the resistance rod;
and the controller is respectively connected with the first test circuit and the second test circuit and is used for outputting the starting voltage of the direct current electroscope according to the starting voltage and the starting current of the alarm circuit and the resistance value of the resistance rod so as to finish the test of the direct current electroscope.
2. The test apparatus of a dc electroscope of claim 1, further comprising:
and the voltage stabilizing circuit is respectively connected with the first test circuit and the second test circuit and is used for stabilizing the input voltage of the first test circuit and the second test circuit.
3. The test apparatus of a dc electroscope of claim 2, further comprising:
and the A/D conversion circuit is connected between the first test circuit and the controller and between the second test circuit and the controller.
4. The test apparatus of a dc electroscope of claim 1, further comprising:
and the display is connected with the controller and used for displaying the starting voltage.
5. The testing apparatus of the dc electroscope of claim 3, wherein the voltage stabilizing circuit comprises: the circuit comprises a voltage stabilizing chip, a first capacitor and a second capacitor; wherein the content of the first and second substances,
the input end of the voltage stabilizing chip is connected with the positive electrode of the power supply, and the grounding end of the voltage stabilizing chip is connected with the negative electrode of the power supply;
one end of the first capacitor is connected with the input end of the voltage stabilizing chip, and the other end of the first capacitor is connected with the negative electrode of the power supply;
one end of the second capacitor is connected with the output end of the voltage stabilizing chip, and the other end of the second capacitor is connected with the negative electrode of the power supply.
6. The test apparatus of a direct current electroscope of claim 5, wherein the first test circuit comprises: the device comprises an adjustable resistor, a second resistor, a first voltage sensor and a second voltage sensor;
one end of the adjustable resistor is connected with the output end of the voltage stabilizing circuit, the other end of the adjustable resistor is arranged in a suspended mode, and the sliding end of the adjustable resistor is connected with the alarm circuit;
one end of the second resistor is connected with the alarm circuit, and the other end of the second resistor is connected with the negative electrode of the power supply;
the first voltage sensor is connected with the output end of the voltage stabilizing chip through the sliding end of the adjustable resistor, and the first voltage sensor is also connected with the A/D conversion circuit;
the second voltage sensor is connected with the negative electrode of the power supply through the second resistor, and the second voltage sensor is also connected with the A/D conversion circuit.
7. The test apparatus of the dc electroscope of claim 6, wherein the second test circuit comprises: a third resistor, a third voltage sensor;
one end of the third resistor is connected with the resistor rod, and the other end of the third resistor is connected with the negative electrode of the power supply;
the third voltage sensor is connected with the negative electrode of the power supply through the third resistor, and the third voltage sensor is also connected with the A/D conversion circuit.
8. The testing device of the direct current electroscope of any one of claims 1 to 7, further comprising a portable box body, wherein the first testing circuit, the second testing circuit, the controller, the voltage stabilizing circuit and the A/D conversion circuit are arranged in the portable box body; the first test circuit is connected with the alarm circuit through a first test probe, and the second test circuit is connected with the resistance rod through a second test probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587739.8U CN212391555U (en) | 2020-04-17 | 2020-04-17 | Testing device of direct current electroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587739.8U CN212391555U (en) | 2020-04-17 | 2020-04-17 | Testing device of direct current electroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212391555U true CN212391555U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020587739.8U Active CN212391555U (en) | 2020-04-17 | 2020-04-17 | Testing device of direct current electroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212391555U (en) |
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2020
- 2020-04-17 CN CN202020587739.8U patent/CN212391555U/en active Active
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