CN219266446U - Comprehensive test board for protective box - Google Patents
Comprehensive test board for protective box Download PDFInfo
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- CN219266446U CN219266446U CN202222818811.5U CN202222818811U CN219266446U CN 219266446 U CN219266446 U CN 219266446U CN 202222818811 U CN202222818811 U CN 202222818811U CN 219266446 U CN219266446 U CN 219266446U
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Abstract
The utility model discloses a comprehensive test board of a protection box, which comprises a power supply module, an interface module, a control module, a function generator, a power amplification module, an insulation voltage withstand tester, an acquisition module, a switching module and a touch module, wherein the power supply module is connected with the interface module; the control module is connected with the input end of the switching module sequentially through the function generator and the power amplification module, the input end of the switching module is also connected with an insulation voltage withstand tester, the output end of the switching module is connected with the protection box to be tested through the interface module, the protection box to be tested is also connected with the control module in a feedback way through the acquisition module, and the control module is communicated with the upper computer through the communication module, so that the comprehensive performance test of the quality factor, the capacitance reactance and the insulation voltage withstand of the protection box to be tested is realized. According to the comprehensive test board for the protective box, which is disclosed by the utility model, after the protective box to be tested is connected to the corresponding interface, the test of the quality factor and the capacitive reactance can be performed by clicking the test button on the touch screen, so that the operation is more convenient, the result is automatically output, and the reliability is higher.
Description
Technical Field
The utility model relates to the technical field of rail signal testing devices, in particular to a comprehensive test board for a protection box.
Background
At present, the protection box is mainly applied to a 25Hz phase-sensitive track circuit of a railway, is used for protecting the interference of 50Hz electrified traction current, and compensates the reactive component of 25Hz signal frequency and the phase angle of the track signal so as to ensure the normal operation of the 25Hz phase-sensitive track circuit. The protection box is used as the standard configuration of a 25Hz phase-sensitive track circuit system and is widely used in various railway offices in China.
When leaving the factory, the electrical performance (quality factor, rail voltage, capacitance reactance and insulation withstand voltage) of the protection box needs to be tested, and the current testing method generally builds a circuit according to different fields of the testing performance. This test method has the following disadvantages: 1. the quality requirement on operators is relatively high; 2. the influence of manpower on the result is large, and errors are easy to occur; 3. the workload is large and complex.
Therefore, a comprehensive test board for the protection box is urgently needed.
Disclosure of Invention
The utility model aims to provide a comprehensive test board for a protective box, which can test the quality factor and the capacitive reactance by clicking a test button on a touch screen after the protective box to be tested is connected to a corresponding interface, is more convenient to operate, automatically outputs a result and has higher reliability.
In order to achieve the above purpose, the utility model provides a comprehensive test board for a protection box, which comprises a power supply module, an interface module, a control module, a function generator, a power amplifying module, an insulation voltage withstanding tester, an acquisition module, a switching module and a touch control module;
the power supply module is used for supplying power to each module;
the interface module is used for connecting the protection box to be tested;
the control module is used for outputting a test signal, receiving a signal fed back by the acquisition module, analyzing and comparing the signal and outputting a result of whether the to-be-tested protection box is qualified or not;
the function generator is used for outputting various waveform signals under the control of the control module;
the power amplification module is used for amplifying the signal output by the function generator to enable the signal to meet the input requirement of the protection box to be tested;
the insulation voltage withstand tester is used for conducting insulation voltage withstand test on the protection box to be tested;
the acquisition module is used for acquiring the output current, the output voltage and the phase of the protection box to be detected;
the switching module is used for switching the electrical testing channel according to the model of the protection box to be tested;
the upper computer is used for controlling operation, inputting parameters and checking results;
the control module is connected with the input end of the switching module sequentially through the function generator and the power amplification module, the input end of the switching module is further connected with an insulation voltage withstand tester, the output end of the switching module is connected with the protection box to be tested through the interface module, the protection box to be tested is further connected with the control module in a feedback manner through the acquisition module, and the control module is communicated with the upper computer through the communication module, so that the comprehensive performance test of the quality factor, the capacitive reactance and the insulation voltage withstand of the protection box to be tested is realized.
Preferably, the switching module comprises a plurality of parallel test loops, and the test loops comprise photoelectric couplers and power relays which are sequentially connected in series.
Preferably, the power module includes:
a programmable variable frequency power supply for outputting 220V/50HZ voltage test signal;
the programmable railway signal power supply is used for outputting a voltage test signal of 110V/25 HZ;
the programmable variable frequency power supply and the programmable railway signal power supply are connected with the control module.
Preferably, the acquisition module comprises a UHF voltmeter for acquiring voltages at two ends of the to-be-detected protection box, a UC voltmeter for acquiring voltages at a capacitance part of the to-be-detected protection box, a UL voltmeter for acquiring voltages at an inductance part of the to-be-detected protection box, a UR voltmeter for acquiring voltages at two ends of a test resistor, an ammeter for acquiring capacitance output current of the to-be-detected protection box and a phase meter for acquiring output phase of the to-be-detected protection box.
Preferably, the utility model further comprises a storage module and a program downloading module;
the storage module is used for storing the test data so as to facilitate later retrieval and backtracking;
the program downloading module is used for downloading the program on the upper computer;
the storage module and the program downloading module are both connected with the control module, and the program downloading module is also communicated with the upper computer through the communication module.
Preferably, the utility model further comprises an indicating module connected with the control module, wherein the indicating module comprises a state indicating unit for indicating the running state and an alarm indicating unit for lighting when the protection box to be detected is unqualified.
Preferably, the type of the protective box to be tested is HF2-25, HF3-25, HF4-25 or HF4-25A.
Therefore, after the protection box comprehensive test board with the structure is adopted, the protection box to be tested can be connected to the corresponding interface, the quality factor and the capacitive reactance can be tested by clicking the test button on the touch screen, the operation is more convenient, the result is automatically output, and the reliability is higher.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a block diagram of a comprehensive test stand for a protective case according to an embodiment of the present utility model;
FIG. 2 is a schematic circuit diagram of a control module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of a power module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 4 is a schematic circuit diagram of a program download module of a comprehensive test bench for a protection box according to an embodiment of the utility model;
FIG. 5 is a schematic circuit diagram of an insulation and voltage withstand tester of a comprehensive test board of a protection box according to an embodiment of the present utility model;
FIG. 6 is a schematic circuit diagram of an indication module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 7 is a schematic circuit diagram of a memory module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 8 is a schematic circuit diagram of an interface module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 9 is a schematic circuit diagram of a communication module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 10 is a schematic circuit diagram of a switching module of a comprehensive test stand for a protection box according to an embodiment of the present utility model;
FIG. 11 is a diagram of a test channel of a comprehensive test bench for a protective case according to an embodiment of the utility model.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings, and it should be noted that, while the present embodiment provides a detailed implementation and a specific operation process on the premise of the present technical solution, the protection scope of the present utility model is not limited to the present embodiment.
FIG. 1 is a block diagram of a comprehensive test stand for a protective case according to an embodiment of the present utility model; FIG. 2 is a schematic circuit diagram of a control module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 3 is a schematic circuit diagram of a power module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 4 is a schematic circuit diagram of a program download module of a comprehensive test bench for a protection box according to an embodiment of the utility model; FIG. 5 is a schematic circuit diagram of an insulation and voltage withstand tester of a comprehensive test board of a protection box according to an embodiment of the present utility model; FIG. 6 is a schematic circuit diagram of an indication module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 7 is a schematic circuit diagram of a memory module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 8 is a schematic circuit diagram of an interface module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 9 is a schematic circuit diagram of a communication module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 10 is a schematic circuit diagram of a switching module of a comprehensive test stand for a protection box according to an embodiment of the present utility model; FIG. 11 is a diagram of a test channel of a comprehensive test board for a protection box according to an embodiment of the present utility model, as shown in FIGS. 1-11, the comprehensive test board for a protection box includes a power module, an interface module, a control module, a function generator, a power amplifying module, an insulation and voltage withstanding tester, an acquisition module, a switching module, and a touch module, where the touch module of the embodiment is disposed in an upper computer and is used for inputting parameters and checking results; the power supply module is used for supplying power to each module; the interface module is used for connecting the protection box to be tested; the control module is used for outputting a test signal, receiving a signal fed back by the acquisition module, analyzing and comparing the signal, and outputting a result of whether the protection box to be tested is qualified or not; the function generator is used for outputting various waveform signals under the control of the control module; the power amplification module is used for amplifying the signal output by the function generator to enable the signal to meet the input requirement of the protection box to be tested; the insulation voltage withstand tester is used for conducting insulation voltage withstand test on the protection box to be tested; the acquisition module is used for acquiring the output current, the output voltage and the phase of the protection box to be detected; the switching module is used for switching the electrical testing channel according to the model of the protection box to be tested; the upper computer is used for controlling operation, inputting parameters and checking results; the control module is connected with the input end of the switching module sequentially through the function generator and the power amplification module, the input end of the switching module is also connected with an insulation voltage withstand tester, the output end of the switching module is connected with the protection box to be tested through the interface module, the protection box to be tested is also connected with the control module in a feedback way through the acquisition module, and the control module is communicated with the upper computer through the communication module, so that the comprehensive performance test of the quality factor, the capacitance reactance and the insulation voltage withstand of the protection box to be tested is realized.
Preferably, the switching module comprises a plurality of parallel test loops, and the test loops comprise photoelectric couplers and power relays which are sequentially connected in series.
Preferably, the power module includes: a programmable variable frequency power supply for outputting 220V/50HZ voltage test signal; and a programmable railway signal power supply for outputting a 110V/25HZ voltage test signal; the programmable variable frequency power supply and the programmable railway signal power supply are connected with the control module.
Preferably, the acquisition module comprises a UHF voltmeter for acquiring voltages at two ends of the to-be-detected protection box, a UC voltmeter for acquiring voltages at a capacitor part of the to-be-detected protection box, a UL voltmeter for acquiring voltages at an inductor part of the to-be-detected protection box, a UR voltmeter for acquiring voltages at two ends of a test resistor, an ammeter for acquiring capacitance output current of the to-be-detected protection box and a phase meter for acquiring output phase of the to-be-detected protection box.
Preferably, the utility model further comprises a storage module and a program downloading module; the storage module is used for storing the test data so as to facilitate later retrieval and backtracking; the program downloading module is used for downloading programs on the upper computer; the storage module and the program downloading module are both connected with the control module, and the program downloading module is also communicated with the upper computer through the communication module.
Preferably, the utility model further comprises an indicating module connected with the control module, wherein the indicating module comprises a state indicating unit for indicating the running state and an alarm indicating unit for lighting when the protection box to be tested is unqualified.
Preferably, the type of the protective box to be tested is HF2-25, HF3-25, HF4-25 or HF4-25A.
The test method based on the comprehensive test board of the protection box comprises the following steps:
s1, judging the model of a protection box to be tested;
s2, connecting to different interfaces of the interface module according to the model;
s3, inputting a control command on the upper computer, and driving the switching module to switch to a corresponding test channel through the control module;
s4, after the number of the to-be-tested protection box is input on the touch screen of the upper computer, clicking a test virtual button on the touch screen to test the quality factor and the capacitive reactance of the to-be-tested protection box;
s40, the control module receives the acquisition values U of the UHF voltmeter, the UL voltmeter and the UC voltmeter HF 、U L U and U C ；
S41, performing quality factor detection under different input capacitance values
S410, calculating the quality factor Q according to the term 5.4.1 of the national railway industry Standard of the people' S republic of China with the number TB/T2026-2018:
wherein U is min ＝min(U L ，U C )；
S411, judging whether it is qualified
If the quality factor Q is more than or equal to 18, the protection box to be detected is qualified, and then step S42 is executed; otherwise, the test result is recorded to the corresponding position of the upper computer touch screen;
s42, performing capacitive reactance test under different input resistance values
S420, calculating the capacitive reactance Z according to the term of the 'national railway industry Standard of the people' S republic 'of China' 5.4.2 with the number of TB/T2026-2018 HF
Wherein R is a resistance value input on the touch screen, U R To test the voltage across the resistor;
s421, judging whether to be qualified
If Z HF If the number is within the set range, the number is qualified, and the execution is continuedS5, a step of S5; otherwise, the test result is recorded to the corresponding position of the upper computer touch screen;
s5, withstand voltage and insulation resistance test
And sending a test signal to the to-be-tested protection box through the insulation voltage withstand tester, testing the insulation resistance of the to-be-tested protection box, if the insulation resistance is within a set range and is not broken down, indicating that the to-be-tested protection box is qualified, otherwise, indicating that the to-be-tested protection box is unqualified, and recording a test result to a corresponding position of the upper computer touch screen.
Preferably, the input resistance values in step S420 are 300 Ω, 340 Ω, 480 Ω, 600 Ω, respectively;
corresponding Z HF The qualification ranges of the product are 300+/-15 omega, 340+/-17 omega, 480+/-20 omega and 600+/-24 omega.
In this embodiment, when the test object is HF4-25, the figures of merit and capacitive reactance are tested on the premise that the input capacitance is 8 μf, 10 μf, 12 μf, 14 μf, 16 μf, respectively, and the following table is a test table thereof:
table 1 is a HF4-25 test table
When the test object is HF4-25, the input capacitance is 8 μf, 10 μf, 12 μf, 14 μf, 16 μf, the figures of merit are 27.1, 25.5, 24.0, 22.7, 22.0, respectively, and the capacitance calculated results are 600+ -30Ω, 480+ -24Ω, 400+ -20Ω, 340+ -17Ω, 300+ -15Ω, respectively, which are all larger than the set values.
In this embodiment, when the test object is HF4-25A, the figures of merit and capacitive reactance are tested on the premise that the input capacitances are 8 μf, 10 μf, 12 μf, 14 μf, and 16 μf, respectively, and the following table is a test table thereof:
table 2 is a HF4-25A test table
When the test object is HF3-25, the quality factor and the capacitive reactance are respectively tested on the premise that the input capacitance is 8 mu f, 10 mu f and 12 mu f:
table 3 is a HF3-25 test table
When the test object is HF2-25, the quality factor and the capacitive reactance are required to be tested on the premise that the input capacitance is 12 mu f:
table 4 shows the HF2-25 test table
Therefore, after the protection box comprehensive test board with the structure is adopted, the protection box to be tested can be connected to the corresponding interface, the quality factor and the capacitive reactance can be tested by clicking the test button on the touch screen, the operation is more convenient, the result is automatically output, and the reliability is higher.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting it, and although the present utility model has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the utility model can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the utility model.
Claims (7)
1. The utility model provides a protection box comprehensive test platform which characterized in that: the system comprises a power supply module, an interface module, a control module, a function generator, a power amplification module, an insulation voltage withstand tester, an acquisition module, a switching module and a touch module;
the power supply module is used for supplying power to each module;
the interface module is used for connecting the protection box to be tested;
the control module is used for outputting a test signal, receiving a signal fed back by the acquisition module, analyzing and comparing the signal and outputting a result of whether the to-be-tested protection box is qualified or not;
the function generator is used for outputting various waveform signals under the control of the control module;
the power amplification module is used for amplifying the signal output by the function generator to enable the signal to meet the input requirement of the protection box to be tested;
the insulation voltage withstand tester is used for conducting insulation voltage withstand test on the protection box to be tested;
the acquisition module is used for acquiring the output current, the output voltage and the phase of the protection box to be detected;
the switching module is used for switching the electrical testing channel according to the model of the protection box to be tested;
the upper computer is used for controlling operation, inputting parameters and checking results;
the control module is connected with the input end of the switching module sequentially through the function generator and the power amplification module, the input end of the switching module is further connected with an insulation voltage withstand tester, the output end of the switching module is connected with the protection box to be tested through the interface module, the protection box to be tested is further connected with the control module in a feedback manner through the acquisition module, and the control module is communicated with the upper computer through the communication module.
2. The protective case comprehensive test stand according to claim 1, wherein: the switching module comprises a plurality of parallel test loops, and the test loops comprise photoelectric couplers and power relays which are sequentially connected in series.
3. The protective case comprehensive test stand according to claim 1, wherein: the power module includes:
a programmable variable frequency power supply for outputting 220V/50HZ voltage test signal;
the programmable railway signal power supply is used for outputting a voltage test signal of 110V/25 HZ;
the programmable variable frequency power supply and the programmable railway signal power supply are connected with the control module.
4. The protective case comprehensive test stand according to claim 1, wherein: the acquisition module comprises a UHF voltmeter for acquiring voltages at two ends of the to-be-detected protection box, a UC voltmeter for acquiring voltages at a capacitor part of the to-be-detected protection box, a UL voltmeter for acquiring voltages at an inductor part of the to-be-detected protection box, a UR voltmeter for acquiring voltages at two ends of a test resistor, an ammeter for acquiring capacitance output current of the to-be-detected protection box and a phase meter for acquiring output phase of the to-be-detected protection box.
5. The protective case comprehensive test stand according to claim 1, wherein: the system also comprises a storage module and a program downloading module;
the storage module is used for storing the test data so as to facilitate later retrieval and backtracking;
the program downloading module is used for downloading the program on the upper computer;
the storage module and the program downloading module are both connected with the control module, and the program downloading module is also communicated with the upper computer through the communication module.
6. The protective case comprehensive test stand according to claim 1, wherein: the system also comprises an indication module connected with the control module, wherein the indication module comprises a state indication unit for indicating the running state and an alarm indication unit for lighting when the protection box to be detected is unqualified.
7. The protective case comprehensive test stand according to claim 1, wherein: the type of the protective box to be tested is HF2-25, HF3-25, HF4-25 or HF4-25A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222818811.5U CN219266446U (en) | 2022-10-25 | 2022-10-25 | Comprehensive test board for protective box |
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| CN202222818811.5U CN219266446U (en) | 2022-10-25 | 2022-10-25 | Comprehensive test board for protective box |
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| CN219266446U true CN219266446U (en) | 2023-06-27 |
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| CN202222818811.5U Active CN219266446U (en) | 2022-10-25 | 2022-10-25 | Comprehensive test board for protective box |
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