CN220381221U - Explosion-proof equipment with resistance tester - Google Patents
Explosion-proof equipment with resistance tester Download PDFInfo
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- CN220381221U CN220381221U CN202321482240.0U CN202321482240U CN220381221U CN 220381221 U CN220381221 U CN 220381221U CN 202321482240 U CN202321482240 U CN 202321482240U CN 220381221 U CN220381221 U CN 220381221U
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- explosion
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- resistance
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- 238000012360 testing method Methods 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000003750 conditioning effect Effects 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 8
- 239000003999 initiator Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Abstract
The utility model relates to an explosion-proof device with a resistance tester, which comprises: the device comprises a resistance tester, a test cable, at least one adapter and an electric detonator explosion-proof box; the resistance tester is used for testing the resistance values of the standard resistor and the resistor to be tested; the test cable is used for connecting the electric detonator to be measured with the resistance tester; the adapter is used for connecting the test cable with the electric detonator to be measured; the electric detonator explosion-proof box is used for detecting whether the resistance of the electric detonator is a normal value or not; the resistance tester, the testing cable and the adapter are arranged in the explosion-proof box of the electric detonator. The device resistance tester collects voltages and currents at two ends of a standard resistor and a resistor to be tested through the first signal collecting unit and the second signal collecting unit, further conducts signal conditioning amplification and filtering through the signal conditioning circuit, and transmits the signals to the main control unit after A/D conversion.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to an explosion-proof device with a resistance tester.
Background
In order to ensure the safety of the helicopter, fire extinguishing devices are arranged in an engine room, one of main equipment of the fire extinguishing devices is a fire extinguishing bottle, and a control component electric detonator is arranged on the fire extinguishing bottle, so that after a pilot receives a fire alarm signal, the fire extinguishing system can be automatically or manually operated to send out detonating current to start the electric detonator, and the electric detonator breaks a rupture membrane on the fire extinguishing bottle, so that the fire extinguishing agent is released to play a role in extinguishing fire, and the flight safety of the helicopter is ensured. While the fire-extinguishing bottle belongs to class III important parts, the electric detonator is a precondition and foundation for ensuring the normal operation of the fire-extinguishing bottle, and is directly related to the flight safety of the helicopter. The electric detonator is good or bad, mainly depends on the resistance value of the electric detonator, whether the electric detonator can detonate according to the set requirement is determined by the normal or abnormal state of the resistance value, and the existing resistance tester is easily influenced by the resistance of the tested cable lead and the contact resistance, so that the resistance measurement precision of the electric detonator is reduced, and whether the electric detonator can be correctly used cannot be correctly judged.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, it is an object of the present utility model to provide an explosion-proof device with a resistance tester, which solves one or more of the problems of the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an explosion-proof device having a resistance tester, the device comprising: the device comprises a resistance tester, a test cable, at least one adapter and an electric detonator explosion-proof box; the resistance tester, the testing cable and the adapter are all arranged in the explosion-proof box of the electric detonator;
the resistance tester is used for testing the resistance values of the standard resistor and the resistor to be tested;
the test cable is used for connecting the electric detonator to be measured with the resistance tester;
the adapter is used for connecting the test cable with the electric detonator to be measured;
the electric detonator explosion-proof box is used for detecting whether the resistance of the electric detonator is a normal value or not.
The resistance tester includes:
the first signal acquisition unit is used for carrying out signal acquisition and signal conversion on the voltage and the current at two ends of the standard resistor;
the second signal acquisition unit is used for carrying out signal acquisition and signal conversion on the voltage and the current at two ends of the resistor to be detected;
the main control unit is provided with a first input end which is connected with the first signal acquisition unit and a second input end which is connected with the second signal acquisition unit, so that the main control unit is used for carrying out internal calculation on the resistance value of the signal input by the first signal acquisition unit or the second signal acquisition unit;
and the display unit is connected with the output end of the main control unit and used for displaying the calculated resistance value.
The first signal acquisition unit includes:
the standard resistor is used for collecting the voltage and the current at two ends of the standard resistor;
the first signal conditioner is used for conditioning, amplifying and filtering the signal output by the standard resistor;
the first converter is used for carrying out A/D conversion on the signal output by the first signal conditioner;
the output end of the standard resistor is connected with the input end of the first signal conditioner in series, and the output end of the first signal conditioner is connected with the input end of the first converter in series;
the second signal acquisition unit includes:
the resistor to be measured is used for collecting the voltage and the current at two ends of the resistor to be measured;
the second signal conditioner is used for conditioning, amplifying and filtering the signal output by the resistor to be tested;
the second converter is used for carrying out A/D conversion on the signal output by the second signal conditioner;
the output end of the resistor to be tested is connected with the input end of the second signal conditioner in series, and the output end of the second signal conditioner is connected with the input end of the second converter in series.
The resistance tester also comprises a power supply, a constant current source, a DC-DC power supply and a starting circuit; the starting circuit is connected with the input end of the main control unit, the input end of the constant current source is connected with the main control unit, the output end of the constant current source is connected with the input end of the standard resistor and the input end of the resistor to be tested, the output end of the power supply is connected with the input end of the DC-DC power supply, and the output end of the DC-DC power supply is connected with the main control unit.
The resistance tester also comprises a power socket, a power switch, an over-range indicator lamp, a test socket and a zero clearing knob; the power socket is used for being plugged into a power supply; the power switch is used for controlling the connection and disconnection of a power supply; the over-range indicator lamp is used for reminding that the resistor to be tested is out of range; the test socket is used for connecting a test wire; the zero clearing knob is used for automatically clearing software.
The adapter is provided with a first magnetic piece.
The end part of the test cable is provided with a second magnetic piece, and the second magnetic piece is magnetically connected with the first magnetic piece.
The first magnetic piece occupies the whole surface of the adapter.
The first magnetic piece occupies a part of the surface of the adapter, and the part occupies 1/3-2/3 of the surface area of the adapter.
Compared with the prior art, the utility model has the following beneficial technical effects:
the method comprises the steps of (a) setting a first signal acquisition unit and a second signal acquisition unit, acquiring voltages and currents at two ends of a standard resistor and a resistor to be tested, further carrying out signal conditioning amplification and filtering through a signal conditioning circuit, carrying out A/D conversion, transmitting to a main control unit, carrying out internal calculation through the main control unit to obtain calculation results of the standard resistor and the resistor to be tested, displaying through a display unit, and comparing with the calculation results of the standard resistor to judge whether the resistance is normal or not, so that whether the electric detonator can be normally used is further judged, and flight safety of a helicopter is guaranteed.
And (II) further, by adding the software automatic zero setting function, the influence of the lead resistance and the contact resistance of the test cable is effectively eliminated, and the resistance measurement precision of the electric detonator is improved.
Drawings
FIG. 1 shows a block diagram of an explosion-proof apparatus with a resistance tester according to an embodiment of the present utility model;
FIG. 2 is a schematic view showing that a first magnetic member occupies the entire surface of an adapter in an explosion-proof device with a resistance tester according to an embodiment of the present utility model;
FIG. 3 is a schematic view showing a first magnetic member occupying part of the surface of an adapter in an explosion-proof apparatus with a resistance tester according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram showing the connection between a first magnetic member and a second magnetic member in an explosion-proof device with a resistance tester according to an embodiment of the present utility model;
fig. 5 shows a system block diagram of an explosion-proof apparatus with a resistance tester according to an embodiment of the present utility model.
Reference numerals: 1. a resistance tester; 2. a test cable; 3. an adapter; 4. an explosion-proof box; 101. a power socket; 102. a power switch; 103. an over-range indicator light; 104. a test socket; 105. zero clearing a knob; 106. a left loop; 107. a right loop; 5. a first signal acquisition unit; 500. a standard resistor; 501. a first signal conditioner; 502. a first converter; 6. a second signal acquisition unit; 600. a resistor to be measured; 601. a second signal conditioner; 602. a second converter; 7. a first magnetic member; 8. a second magnetic member; 9. a display unit; 10. a main control unit; 11. a DC-DC power supply.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following describes in further detail an explosion-proof device with a resistance tester according to the present utility model with reference to the accompanying drawings and detailed description. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.
Referring to fig. 1, the utility model provides an explosion-proof device with a resistance tester, the device comprises: the electric resistance tester 1, a test cable 2, at least one adapter 3 and an electric detonator explosion-proof box 4.
The resistance tester 1, the test cable 2 and the adapter 3 are all arranged in the explosion-proof box 4 of the electric detonator. The resistance tester 1 is used for testing the resistance values of the standard resistor 500 and the resistor 600 to be tested.
The test cable 2 is used for connecting the electric detonator to be measured with the resistance tester 1. The adapter 3 is used for connecting the test cable 2 with an electric initiator to be measured. The electric detonator explosion proof box 4 is used for detecting whether the resistance of the electric detonator is normal or not.
Referring to fig. 5, the resistance tester 1 includes a first signal acquisition unit 5 for performing signal acquisition and conversion processing on voltages and currents at two ends of a standard resistor 500. The second signal acquisition unit 6 is used for performing signal acquisition and conversion processing on the voltage and the current at two ends of the resistor 600 to be tested. The main control unit 10 is configured to perform internal calculation of a resistance value on a signal input by the acquisition circuit, and specifically perform calculation by using a single chip microcomputer cpu. And a display unit 9 for displaying the calculated resistance value. Preferably, the display unit 9 may be a resistance meter in this embodiment.
Further, please continue to refer to fig. 5, the first signal acquisition unit 5 includes:
the standard resistor 500 is used for collecting the voltage and the current at two ends of the standard resistor 500.
The first signal conditioner 501 is configured to condition, amplify and filter the signal output by the standard resistor 500. Preferably, the first signal conditioner 501 may employ a filter in the present embodiment.
The first converter 502 is configured to perform AD conversion on the signal output from the first signal conditioner 501. Preferably, the first signal conditioner 501 may employ an a/D converter in this embodiment.
The output end of the standard resistor 500 is connected in series with the input end of the first signal conditioner 501, and the output end of the first signal conditioner 501 is connected in series with the input end of the first converter 502.
Further, please continue to refer to fig. 5, the second signal acquisition unit 6 includes:
and the resistor 600 to be measured is used for collecting the voltage and the current at two ends of the resistor 600 to be measured.
The second signal conditioner 601 is configured to condition, amplify and filter the signal output by the resistor 600 to be tested.
A second converter 602 for AD-converting the signal output from the second signal conditioner 601.
The output end of the resistor 600 to be measured is connected in series with the input end of the second signal conditioner 601, and the output end of the second signal conditioner 601 is connected in series with the input end of the second converter 602.
Still further, with continued reference to fig. 5, the resistance tester 1 further includes a power supply, a constant current source, a DC-DC power supply 11, and a start circuit. The starting circuit is connected with the input end of the main control unit 10, the input end of the constant current source is connected with the main control unit 10, the output end of the constant current source is connected with the input end of the standard resistor 500 and the input end of the resistor 600 to be tested, the output end of the power supply is connected with the input end of the DC-DC power supply 11, and the output end of the DC-DC power supply 11 is connected with the main control unit 10.
Further, referring to fig. 1, the resistance tester 1 further includes a power socket 101, a power switch 102, an over-range indicator 103, a test socket 104, and a clear knob 105. The power socket 101 is used for plugging in a power supply and accessing to 220V power supply. The power switch 102 is used to control the power on/off, the power on is pressed down, and the power off is popped up. The over-range indicator lamp 103 is used for reminding the to-be-measured resistor 600 of exceeding the range, and is turned on when the open circuit and the to-be-measured resistor exceed the range. The test socket 104 is used to connect test lines. The zero clearing knob 105 is used for automatically clearing software, specifically, after a short-circuit plug is inserted, a loop change-over switch is shifted to any path, after the number is stable, the zero clearing button switch software is pressed to automatically clear, and meanwhile, a check plug is connected when the instrument clears zero.
Referring to fig. 2, 3 and 4, the adaptor 3 has a first magnetic member 7, the end of the test cable has a second magnetic member 8, and the second magnetic member 8 is magnetically connected with the first magnetic member 7.
Preferably, in the explosion-proof device with a resistance tester according to the embodiment of the present utility model, the first magnetic member 7 occupies the whole surface of the adapter 3.
Further, please refer to fig. 3, of course, in other embodiments of the present utility model, the first magnetic member 7 occupies a portion of the surface of the adapter 3, and the portion occupies 1/3-2/3 of the surface area of the adapter 3. Further, when the first magnetic member 7 occupies a part of the surface of the adapter 3, the first magnetic member 7 may be not only a single one, but also more than one, which is not limited in this respect, as long as the adapter 3 and the test cable 2 can be magnetically connected by the first magnetic member 7 and the second magnetic member 8.
Specifically, please refer to fig. 4, a first magnetic part 7 is disposed on the surface of the adaptor 3, a second magnetic part 8 is disposed at the end of the test cable, the adaptor 3 and the end of the test cable 2 are connected together in a manner of converting the original plug connection manner into a magnet adsorption manner, meanwhile, a jack corresponding to the end of the test cable 2 is not required to be disposed inside the adaptor 3, and a user does not need to screw in the jack when connecting the test cable 2 and the adaptor 3, but automatically connects through magnetic attraction, so that the time used in the test process is further shortened, the test speed is improved, the problem that the circuit short circuit is easily caused by the jack is further avoided, and the safety in the test process is improved.
Furthermore, the resistance tester 1 is specially used for testing the resistance of an electric initiator of a fire extinguishing system, and the specific working principle is as follows: the resistance tester 1 collects voltages and currents at two ends of a standard resistor 500 and a resistor 600 to be tested by arranging a first signal collecting unit 5 and a second signal collecting unit 6, further carries out signal conditioning amplification and filtering on the collected standard resistor 500 signal by a first signal conditioner 501, and then carries out A/D conversion by a first converter 502, and then transmits the signal to a main control unit 10, and the signal is internally calculated by the main control unit 10 so as to obtain a calculation result of the standard resistor 500.
Meanwhile, the second signal conditioner 601 performs signal conditioning amplification and filtering on the acquired signal of the resistor 600 to be tested, and the signal is transmitted to the main control unit 10 after being subjected to A/D conversion by the second converter 602, and is internally calculated by the main control unit 10, so that a calculation result of the resistor 600 to be tested is obtained.
Finally, the two results are displayed through the display unit 9, and the calculated result of the resistor 600 to be tested is compared with the calculated result of the standard resistor 500, so that whether the resistance is normal or not is judged, whether the electric detonator can be used normally or not is further judged, and the flight safety of the helicopter is ensured. Meanwhile, the influence of the equivalent resistance of the test cable is considered, the automatic zero setting function of software is added in the resistance tester, and the influence of the lead resistance and the contact resistance of the test cable is effectively eliminated, so that the resistance measurement precision of the electric detonator is improved.
Referring to fig. 1, 2, 3 and 4, the following describes the specific measurement steps of an electric initiator in an explosion-proof device with a resistance tester according to an embodiment of the present utility model:
step S1, preparing work before measurement, specifically: and (3) inserting a power line, preheating for 3 minutes after starting up, and pulling the loop change-over switch to the central position.
Step S2, performing resistance clearing through the clearing knob 105, specifically: selecting a test cable 2, connecting one end of the test cable 2 with a test socket 104 after the test cable 2 is connected through an adapter 3, inserting a check plug at the other end, sequentially dialing a change-over switch to a left loop 106 or a right loop 107, after the numerical value on a display unit 9 is stable, respectively resetting by using a reset knob 105 after waiting for 30S, dialing the change-over switch to the center position of the loop switch after finishing, and accumulating left and right display values after resetting to be not more than 0.004 omega.
Step S3, installing an electric initiator to be measured, which specifically comprises the following steps: the explosion-proof box 4 is taken out and placed at a position 1.5 meters away from the tester, the electric detonator to be measured is screwed into the explosion-proof box 4, the test cable 2 is connected with the electric detonator, and the change-over switch is required to be positioned at the center switch position of the loop before connection.
Step S4, starting measurement operation, specifically: the change-over switch is sequentially moved to the left loop 106 and the right loop 107, and two groups of data are recorded.
Step S5, detaching the electric detonator after the measurement is finished, wherein the method specifically comprises the following steps: and (3) pulling the change-over switch to the position of the central switch of the loop, and replacing the electric detonator to be tested.
And S6, carrying out resetting operation before replacing the test cable 2 each time so as to eliminate the influence of the lead resistance and the contact resistance of the test cable, thereby improving the resistance measurement precision of the electric detonator.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. An explosion-proof equipment with resistance tester, characterized by: the device comprises: the device comprises a resistance tester, a test cable, at least one adapter and an electric detonator explosion-proof box; the resistance tester, the testing cable and the adapter are all arranged in the explosion-proof box of the electric detonator;
the resistance tester is used for testing the resistance values of the standard resistor and the resistor to be tested;
the test cable is used for connecting the electric detonator to be measured with the resistance tester;
the adapter is used for connecting the test cable with the electric detonator to be measured;
the electric detonator explosion-proof box is used for detecting whether the resistance of the electric detonator is a normal value or not.
2. An explosion-proof apparatus with a resistance tester as claimed in claim 1, wherein:
the resistance tester includes:
the first signal acquisition unit is used for carrying out signal acquisition and signal conversion on the voltage and the current at two ends of the standard resistor;
the second signal acquisition unit is used for carrying out signal acquisition and signal conversion on the voltage and the current at two ends of the resistor to be detected;
the main control unit is provided with a first input end which is connected with the first signal acquisition unit and a second input end which is connected with the second signal acquisition unit, so that the main control unit is used for carrying out internal calculation on the resistance value of the signal input by the first signal acquisition unit or the second signal acquisition unit;
and the display unit is connected with the output end of the main control unit and used for displaying the calculated resistance value.
3. An explosion-proof apparatus with resistance tester as claimed in claim 2, wherein:
the first signal acquisition unit includes:
the standard resistor is used for collecting the voltage and the current at two ends of the standard resistor;
the first signal conditioner is used for conditioning, amplifying and filtering the signal output by the standard resistor;
the first converter is used for carrying out A/D conversion on the signal output by the first signal conditioner;
the output end of the standard resistor is connected with the input end of the first signal conditioner in series, and the output end of the first signal conditioner is connected with the input end of the first converter in series;
the second signal acquisition unit includes:
the resistor to be measured is used for collecting the voltage and the current at two ends of the resistor to be measured;
the second signal conditioner is used for conditioning, amplifying and filtering the signal output by the resistor to be tested;
the second converter is used for carrying out A/D conversion on the signal output by the second signal conditioner;
the output end of the resistor to be tested is connected with the input end of the second signal conditioner in series, and the output end of the second signal conditioner is connected with the input end of the second converter in series.
4. An explosion-proof apparatus with resistance tester as claimed in claim 3, wherein: the resistance tester also comprises a power supply, a constant current source, a DC-DC power supply and a starting circuit; the starting circuit is connected with the input end of the main control unit, the input end of the constant current source is connected with the main control unit, the output end of the constant current source is connected with the input end of the standard resistor and the input end of the resistor to be tested, the output end of the power supply is connected with the input end of the DC-DC power supply, and the output end of the DC-DC power supply is connected with the main control unit.
5. An explosion-proof apparatus with resistance tester as claimed in claim 4, wherein: the resistance tester also comprises a power socket, a power switch, an over-range indicator lamp, a test socket and a zero clearing knob; the power socket is used for being plugged into a power supply; the power switch is used for controlling the connection and disconnection of a power supply; the over-range indicator lamp is used for reminding that the resistor to be tested is out of range; the test socket is used for connecting a test wire; the zero clearing knob is used for automatically clearing software.
6. An explosion-proof apparatus with a resistance tester as claimed in claim 1, wherein: the adapter is provided with a first magnetic piece.
7. An explosion-proof apparatus with resistance tester as defined in claim 6, wherein: the end part of the test cable is provided with a second magnetic piece, and the second magnetic piece is magnetically connected with the first magnetic piece.
8. An explosion-proof apparatus with resistance tester as claimed in claim 7, wherein: the first magnetic piece occupies the whole surface of the adapter.
9. An explosion-proof apparatus with resistance tester as claimed in claim 7, wherein: the first magnetic piece occupies a part of the surface of the adapter, and the part occupies 1/3-2/3 of the surface area of the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482240.0U CN220381221U (en) | 2023-06-12 | 2023-06-12 | Explosion-proof equipment with resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321482240.0U CN220381221U (en) | 2023-06-12 | 2023-06-12 | Explosion-proof equipment with resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220381221U true CN220381221U (en) | 2024-01-23 |
Family
ID=89567239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321482240.0U Active CN220381221U (en) | 2023-06-12 | 2023-06-12 | Explosion-proof equipment with resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220381221U (en) |
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2023
- 2023-06-12 CN CN202321482240.0U patent/CN220381221U/en active Active
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