Signal lamp box tester

Abstract

The utility model discloses a signal lamp box tester, which belongs to the technical field of signal lamp box detection, and comprises a tester body and a panel arranged at the front end of the tester body, and the panel comprises a power supply voltage adjusting assembly which comprises a working voltage adjusting knob and a power supply control switch; the danger level lamp box test assembly comprises a first wave band selection switch and a wave band signal indicating lamp; the central signal lamp box test assembly comprises a dimming knob, a second wave band selection switch and a gear selection switch; the illumination brightness control box test assembly comprises a channel brightness control voltage adjusting knob and an illumination signal lamp; and the voltage and current monitoring assembly comprises a voltmeter and an ammeter. According to the utility model, different signals and different voltage values are controlled, adjusted and output through different switches and knobs, different input signals and working voltages are provided for the signal lamp box to be tested, and the signal lamp box to be tested is tested according to the signal indicating lamps on the tester panel.

Description

Technical Field

[0001] This utility model relates to the field of signal light box testing technology, and in particular to a signal light box tester. Background Technology

[0002] Signal lights are one of the most important safety devices on aircraft. The signal light control box conveys various information to personnel by controlling the on / off state of the signal lights, helping them make correct operations and decisions. As the driving device that controls the on / off state of the signal lights, the signal light control box is an important component of the aircraft lighting system. A comprehensive inspection is required when testing and maintaining the signal light control box.

[0003] When testing and repairing signal light control boxes, it is necessary to input various different signals into the product to determine whether the signal light is functioning correctly. It is also necessary to test the various signals output by the product during operation to determine if the output signals are correct. Existing testing methods involve manual wiring, which is cumbersome and prone to errors, thus reducing the accuracy of the test results.

[0004] Therefore, there is an urgent need for a signal light box tester that can simplify the operation process, provide different input signals for various signal light boxes to conduct experiments, and display the output signals of the light boxes. Utility Model Content

[0005] In view of this, it is necessary to provide a signal light box tester that can simplify the operation process, provide different input signals for various signal light boxes to conduct experiments, and display the output signals of the light boxes.

[0006] To achieve the above objectives, on the one hand, this utility model provides a signal light box tester, including a tester body and a panel disposed at the front end of the tester body, the panel including:

[0007] The power supply voltage regulation assembly includes a working voltage adjustment knob and a power control switch;

[0008] Hazardous light box test assembly, including first band selection switch and band signal indicator;

[0009] The central signal light box test assembly includes a dimming knob, a second band selection switch, and a gear selection switch;

[0010] The lighting brightness control box test assembly includes a channel brightness control voltage adjustment knob and lighting indicator lights;

[0011] Voltage and current monitoring components, including voltmeters and ammeters;

[0012] The input terminals of the hazardous level light box test assembly, the central signal light box test assembly, and the lighting brightness control box test assembly are all connected to the power supply voltage regulation assembly, and each output terminal is connected to the voltage and current monitoring assembly. The power supply voltage regulation assembly is also connected to the voltage and current monitoring assembly.

[0013] In one possible implementation, the first band selection switch includes one input pin at its input terminal and eight output pins at its output terminal.

[0014] The input pin of the first band selection switch is connected to the power supply voltage regulation component, and the eight output pins are respectively connected to the input terminals of the eight corresponding signal paths of the signal lamp box under test.

[0015] In one possible implementation, the band signal indicator includes eight band signal indicator lights, from the first band signal indicator light to the eighth band signal indicator light, which are respectively connected to the output terminals of eight corresponding signal paths of the signal light box under test.

[0016] The eight band signal indicator lights are used to display the output signal information of the signal light box under the corresponding band signal.

[0017] In one possible implementation, the central signal light box test assembly further includes a light guide plate control switch for controlling the power supply connection mode of the light box under test; the connection mode includes a connection mode connected to the output terminal of the dimming knob and a connection mode directly connected to the power supply voltage adjustment assembly.

[0018] In one possible implementation, the input terminal of the second band selection switch includes one input pin, and the output terminal of the second band selection switch includes eight pins, from signal 1 output pin to signal 8 output pin.

[0019] The gear selector switch has one input pin at its input terminal and eight output pins, from output pin J4 to output pin J11.

[0020] The input pin of the second band selection switch is connected to the power supply voltage regulation component, and the output pins of signal 1 to signal 8 are respectively connected to one or more of the output pins of J4 to J11;

[0021] The input pin of the gear selection switch is connected to the output terminal of the power supply voltage regulation component, and the output pins J4 to J11 are connected to the signal path input terminals of the external test signal light box of the relay.

[0022] In one possible implementation, the lighting brightness control box test assembly further includes a channel selection switch for controlling the connection method between the output terminal of the lighting brightness control box test assembly and the left and right channels of the signal light box under test.

[0023] In one possible implementation, the input terminal of the tester body is connected to an external AC power source via a fuse.

[0024] In one possible implementation, the power control switch includes a 28V power control switch and a 220V power control switch.

[0025] In one possible implementation, the panel further includes a primary self-test switch, a secondary self-test switch, a tertiary self-test switch, and corresponding indicator lights;

[0026] One end of each of the first-level self-test switch, the second-level self-test switch, and the third-level self-test switch is connected to the output terminal of the power supply voltage regulation component, and the other end is connected to the input terminal of the signal light box under test via a relay, which is used to control the connection mode of the working power supply of the signal light box under test.

[0027] In one possible implementation, the panel further includes a constantly flashing switch for controlling the illumination mode of the self-test indicator light.

[0028] The beneficial effects of this utility model are as follows: The power supply voltage adjustment component includes a working voltage adjustment knob and a power control switch; by adjusting the working voltage adjustment knob and the power control switch, the power supply voltage output by the tester is adjusted, providing different power supply voltage ranges for the signal light box under test; the hazardous level light box testing component includes a first band selection switch and a band signal indicator light; by selecting different bands through the first band selection switch, different band signals are provided to the signal light box under test, and the results are displayed on the corresponding band signal indicator light according to the output signal of the signal light box under test; the central signal light box testing component includes a dimming knob, a second band selection switch, and... The system includes a range selection switch; a dimming knob adjusts the DC voltage output by the tester, controlling the brightness of the light guide plate and the indicator light on the dimming knob in the signal light box under test; a band selection switch and a range selection switch provide input signals of different bands and corresponding ranges to the signal light box under test; an illumination brightness control box test component, including a channel brightness control voltage adjustment knob and an illumination indicator light; the channel brightness control voltage adjustment knob adjusts the DC voltage output by the tester, and the illumination indicator light indicates the channel type connected to the tester; and a voltage and current monitoring component, including a voltmeter and an ammeter, displays the current operating voltage and current of the tester, as well as the output voltage. This invention improves the efficiency and accuracy of signal light box testing by controlling and adjusting different signals and voltage values ​​through different switches and knobs to provide different input signals and operating voltages to the signal light box under test, and performs testing based on the indicator lights on the tester panel. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the signal light box tester panel structure provided by this utility model;

[0031] Figure 2 The present invention provides a circuit schematic diagram of the entire working part of the tester;

[0032] Figure 3 Partial circuit diagram of the central signal light box test assembly provided by this utility model;

[0033] Figure 4 The schematic diagram shows the self-testing circuit and the constantly lit flashing switch provided by this utility model. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] In the description of the embodiments of this utility model, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0036] The terms "first," "second," etc., used in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] This utility model provides a signal light box tester, which will be described in detail below.

[0039] In some embodiments of this utility model, such as Figure 1 As shown, Figure 1 The schematic diagram of the signal light box tester panel provided by this utility model shows that the panel includes: a power voltage adjustment component 1, which includes a working voltage adjustment knob 6 and a power control switch 7.

[0040] Hazardous light box test assembly 2 includes a first band selection switch B1 and a band signal indicator 8;

[0041] The central signal light box test component 3 includes a dimming knob 9, a second band selection switch B2, and a gear selection switch B3;

[0042] The lighting brightness control box test assembly 4 includes channel brightness control voltage adjustment knobs VR2 and VR3 and lighting signal lamps 10;

[0043] Voltage and current monitoring component 5 includes a voltmeter and an ammeter;

[0044] The input terminals of the hazardous light box test assembly 2, the central signal light box test assembly 3, and the lighting brightness control box test assembly 4 are all connected to the power supply voltage regulation assembly 1, and each output terminal is connected to the voltage and current monitoring assembly 5. The power supply voltage regulation assembly 1 is also connected to the voltage and current monitoring assembly 5.

[0045] Specifically, the power supply voltage regulation component 1 converts 220V AC power to DC power. The power control switch 7 includes a 220V power control switch K0 and a 28V power control switch K1, used to adjust different DC voltage ranges. The working voltage adjustment knob 6 precisely adjusts each DC voltage range. The hazard level lamp box testing component 2 provides different band signals to the signal lamp box under test via the band selection switch B1, tests the hazard level lamps in the signal lamp box under test corresponding to the band signal, and returns the test results to the corresponding indicator light on the tester. The central signal lamp box testing component 3 further adjusts the DC output voltage value of the tester via the dimming knob 9. Adjusting the dimming knob 9 controls the brightness changes of the light guide plate and the dimming knob indicator light on the signal lamp box under test. The second band selection switch B2 and the gear selection switch B3 control the tester to provide different band signals to the signal lamp box under test. Different signal levels are used to test the central signal light on the signal light box under test. The lighting brightness control box test component 4 adjusts the DC voltage values ​​of the left and right channels respectively through the channel brightness control voltage adjustment knobs VR2 and VR3. The lighting signal light 10 is used to display the current test channel. In this embodiment, the voltage and current monitoring component 5 includes a working voltmeter, a working ammeter, an output voltmeter, and a brightness control output voltmeter. The working voltmeter and working ammeter are connected to the output terminals of the power supply voltage adjustment component 1 to display the current working voltage and current of the tester. The output voltmeters are all connected to the output terminals of the hazardous light box test component 2, the central signal light box test component 3, and the lighting brightness control box test component 4 to display the output voltage value of the tester. The brightness control output voltmeter is connected to the output terminal of the lighting brightness control box test component 4 to display the current lighting control output voltage value.

[0046] In this embodiment, the power supply voltage output by the tester is adjusted using the working voltage adjustment knob 6 and the power control switch 7, providing different power supply voltage ranges for the tester. Different bands are selected using the first band selection switch B1 to provide different band signals to the signal light box under test, and the results are displayed on the corresponding band signal indicator 8 based on the output signal of the signal light box under test. The DC voltage output by the tester is adjusted using the dimming knob 9, controlling the brightness changes of the light guide plate and the dimming knob indicator in the signal light box under test. Different bands and corresponding band levels of input signals are provided to the signal light box under test using the band selection switch B2 and the level selection switch B3. The DC voltage output by the tester is adjusted using the channel brightness control voltage adjustment knobs VR2 and VR3, and the illumination indicator 10 is used to display the channel type connected to the tester. The voltage and current monitoring component 5 displays the current working voltage and current of the tester as well as its output voltage. This embodiment uses different switches and knobs to control and adjust the output signals and voltage values, providing different input signals and operating voltages to the signal light box under test. The test box is then tested according to the signal indicator lights on the tester panel. This improves the efficiency and accuracy of signal light box testing.

[0047] This embodiment uses different switches and knobs to control and adjust the output signals and voltage values, providing different input signals and operating voltages to the signal light box under test. The test box is then tested according to the signal indicator lights on the tester panel. This improves the efficiency and accuracy of signal light box testing.

[0048] In some embodiments of this utility model, the input terminal of the first band selection switch B1 includes one input pin B1-11, and the output terminal includes eight output pins.

[0049] The input pin B1-11 of the first band selection switch B1 is connected to the power supply voltage regulation component, and the eight output pins are respectively connected to the input terminals of the eight corresponding signal paths of the signal lamp box under test.

[0050] Specifically, such as Figure 2 As shown, Figure 3This utility model provides a partial circuit diagram of the hazardous level lamp box testing component. Input pins B1-11 are connected to the power supply voltage regulation component 1 via a relay. The output pins also include a neutral position pin B1-0, two unused pins B1-9 and B1-10. Output pin B1-0 corresponds to position 0 in the band selection switch B1, output pin B1-1 corresponds to the fire alarm position in the band selection switch B1, output pin B1-2 corresponds to the critical angle of attack position in the band selection switch B1, and output pin B1-3 corresponds to the position in the band selection switch B1... The icing position, output pins B1-4 correspond to the fuel level 15 position in band selection switch B1, output pins B1-5 correspond to the engine position in band selection switch B1, output pins B1-6 correspond to the power position in band selection switch B1, output pins B1-7 correspond to the bleed air leakage position in band selection switch B1, and output pins B1-8 correspond to the high danger position in band selection switch B1; the eight output pins B1-1 to B1-8 are connected to the input terminal of the corresponding signal light in the test signal light box via signal path 21, providing the corresponding band for the corresponding signal light in the test signal light box.

[0051] In this embodiment, the first band selection switch B1 provides different band signals to each hazard level lamp in the signal light box under test.

[0052] In some embodiments of this utility model, the band signal indicator 8 includes eight band signal indicator lights, from the first band signal indicator light to the eighth band signal indicator light, which are respectively connected to the output terminals of the eight corresponding signal paths of the signal light box under test;

[0053] The eight band signal indicator lights 8 are used to display the output signal information of the signal light box under the corresponding band signal.

[0054] Specifically, such as Figure 1 As shown, the eight signal indicator lights are for the fire alarm reset button, critical angle of attack reset button, icing reset button, remaining fuel 15 reset button, engine reset button, power reset button, bleed air leak reset button, and high-risk reset button. Based on the signal output from the test indicator box, when the corresponding signal button is activated, the corresponding signal indicator light illuminates.

[0055] Furthermore, such as Figure 2 As shown, all eight band signal indicator lights are connected to the power supply voltage regulation component. At the same time, they receive signals from the corresponding signal lights of the signal light box under test through signal path 22, and display the signals output by the signal light box under test through the corresponding band signal indicator lights.

[0056] This embodiment displays the signal output by the signal light box under test through eight signal bands, which can accurately verify whether the hazard level light corresponding to the signal light box under test is normal.

[0057] In some embodiments of this utility model, the central signal light box test assembly further includes a light guide plate control switch K6, used to control the power supply connection mode of the light box under test; the connection mode includes a connection mode connected to the output terminal of the dimming knob and a connection mode directly connected to the power supply voltage adjustment assembly.

[0058] Specifically, when the light guide plate control switch K6 is turned on, the dimming knob 9 is connected to the power supply voltage adjustment component 1, and the DC voltage output of the central signal light box test component is adjusted by the dimming knob 9. When the light guide plate control switch K6 is turned off, the dimming knob 9 is not connected, and the power supply voltage adjustment component 1 directly provides DC power to the light box under test.

[0059] Furthermore, when the light guide plate control switch K6 is turned on, the light guide plate control switch is connected to the dimming knob 9, and outputs power supplies with various different signals through the dimming power supply line and the dimming feedback line, thereby adjusting the DC voltage output by the central signal light box test component.

[0060] In this embodiment, the power supply mode of the lamp box under test is controlled by the light guide plate control switch K6, thereby controlling the input voltage range of the central signal lamp on the lamp box under test.

[0061] In some embodiments of this utility model, the input terminal of the second band selection switch B2 includes one input pin, and the output terminal of the second band selection switch B2 includes eight pins from signal 1 output pin to signal 8 output pin;

[0062] The input terminal of the gear selection switch has one input pin, and the output terminal of the gear selection switch B3 includes eight pins from output pin J4 to output pin J11.

[0063] The input pin of the second band selection switch B2 is connected to the output terminal of the power supply voltage regulation component, and the output pins of signal 1 to signal 8 are respectively connected to one or more of the output pins of J4 to J11.

[0064] The input pin of the gear selection switch B3 is connected to the output terminal of the power supply voltage regulation component, and the output pins J4 to J11 are connected to the signal path input terminals of the test signal light box outside the relay.

[0065] Specifically, each signal in the second band selection switch B2 can be connected to the input pins of up to eight range selection switches as needed. In this embodiment, for example... Figure 3 As shown, Figure 3This is a partial circuit diagram of the central signal light box test component provided by this utility model. It should be noted that the second band selection switch B2 has a total of eight signal output pins, but only four are shown in the diagram. The gear selection switch B3 has a total of eight gear selections, but only four are shown for reference. Each signal output pin can be connected to the required gear according to specific needs or signal information. As shown in the diagram, signal 1 output pin has eight gears, meaning that all eight gear selection input pins of the second band selection switch B2 are connected to the eight gear selection input pins of the gear selection switch B3 via relays. Signal 2 and signal 3 output pins have three gear selections, meaning that both signal 2 and signal 3 output pins of the second band selection switch B2 are connected to the gear 1, gear 2, and gear 3 input pins of the gear selection switch B3 via relays. Signal 4 output pin has one gear, meaning that the signal 4 output pin of the second band selection switch B2 is connected to the gear 1 input pin of the gear selection switch B3 via a relay. Figure 3 It can be seen that the eight output pins of the second band selection switch B2 and the eight gear selection positions of the gear selection switch B3 can be combined to produce up to 64 different gears and different bands of output signals, and at least 8 different gears and different bands of output signals, depending on specific needs.

[0066] In this embodiment, the eight band signal selections of the second band selection switch B2 and the eight gear selections of the gear selection switch B3 are used to form output pins for various different band signals, providing various different band signals and different gear band signals to the signal light box under test for testing the central signal light.

[0067] In some embodiments of this utility model, the lighting brightness control box test component 4 further includes a channel selection switch K7, which is used to control the connection mode between the output terminal of the lighting brightness control box test component 4 and the left and right channels of the signal light box under test.

[0068] Specifically, the channel selection switch K7 is a three-position switch with a neutral position. When the channel selection switch K7 is in the right position, the output terminal of the tester is connected to the input terminal of the right channel of the signal light box under test. The output voltage of the lighting brightness control box test component is adjusted by adjusting knob VR3. When the channel selection switch K7 is in the left position, the output terminal of the tester is connected to the input terminal of the left channel of the signal light box under test. The output voltage of the lighting brightness control box test component is adjusted by adjusting knob VR2. At the same time, adjusting knobs VR2 and VR3 are connected to the voltage and current monitoring component to display the current output voltage and output control voltage.

[0069] In this embodiment, the left and right channel signal lights of the signal light box under test are tested using the channel selection switch K7.

[0070] In some embodiments of this invention, the input terminal of the tester body is connected to an external AC power supply via a fuse.

[0071] In some embodiments of this utility model, the power control switch includes a 28V power control switch and a 220V power control switch.

[0072] In some embodiments of this utility model, the panel also includes a primary self-test switch K3, a secondary self-test switch K4, a tertiary self-test switch K5, and their corresponding self-test indicator lights;

[0073] One end of each of the first-level self-test switch K3, the second-level self-test switch K4, and the third-level self-test switch K5 is connected to the output terminal of the power supply voltage regulation component, and the other end is connected to the input terminal of the signal light box under test via a relay, which is used to control the connection mode of the working power supply of the signal light box under test.

[0074] Specifically, such as Figure 4 As shown, Figure 4 The diagram shows the self-testing circuit and the constant-on and flashing switch sections provided by this utility model. The first-level self-testing switch K3, the second-level self-testing switch K4, and the third-level self-testing switch K5 control relays J1, J2, and 3, respectively. After the switches of relays J1, J2, and 3 are turned on, the power supply of the tester can be directly connected to the input terminal of the signal light box under test to detect whether each signal light in the signal light box under test is lit normally.

[0075] In this embodiment, the tester itself is tested by a self-testing switch to determine whether the tester is working properly.

[0076] In some embodiments of this utility model, the panel also includes a constantly flashing switch K2, used to control the lighting mode of the self-test indicator light.

[0077] Specifically, such as Figure 4As shown, the first relay circuit is formed by the series-connected resistor JS2 and relay JS1-1, and the second relay circuit is formed by the series-connected resistor JS1 and relay JS2-1. The first and second relay circuits are connected in parallel. Relay JS1-1 is a normally open switch, and relay JS2-1 is a normally closed switch. When the flashing normally lit switch K2 is turned on, the second relay circuit containing resistor JS1 and relay JS2-1 is first turned on. Because resistor JS1 is energized, relay JS1-1 is closed, which energizes the first relay circuit. At this time, because resistor JS2 is energized, relay JS2-1 is turned off, resistor JS1 is de-energized, and then relay JS1-1 is turned off, resistor JS2 is de-energized, and the second relay circuit containing resistor JS1 and relay JS2-1 is re-energized, realizing the energization and de-energization cycle of resistor JS1. Resistor JS1 controls the switch relay JS1-2 to turn on and off in a cyclical manner, thereby realizing the flashing function of the band signal indicator light. When the constantly lit flashing switch K2 is open, resistor JS1 is de-energized, and the switch relay JS1-2 controlled by resistor JS1 is normally closed, thereby controlling the band signal indicator light to remain on.

[0078] In this embodiment, the illumination mode of the band signal indicator is controlled by the constantly flashing switch K2.

[0079] The signal light box tester provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A signal light box tester, comprising a tester body and a panel disposed at the front end of the tester body, characterized in that, The panel includes: The power supply voltage regulation assembly includes a working voltage adjustment knob and a power control switch; Hazardous light box test assembly, including first band selection switch and band signal indicator; The central signal light box test assembly includes a dimming knob, a second band selection switch, and a gear selection switch; The lighting brightness control box test assembly includes a channel brightness control voltage adjustment knob and lighting indicator lights; Voltage and current monitoring components, including voltmeters and ammeters; The input terminals of the hazardous level light box test assembly, the central signal light box test assembly, and the lighting brightness control box test assembly are all connected to the power supply voltage regulation assembly, and each output terminal is connected to the voltage and current monitoring assembly. The power supply voltage regulation assembly is also connected to the voltage and current monitoring assembly.

2. The signal light box tester according to claim 1, characterized in that, The first band selection switch has one input pin and eight output pins. The input pin of the first band selection switch is connected to the power supply voltage regulation component, and the eight output pins are respectively connected to the input terminals of the eight corresponding signal paths of the signal lamp box under test.

3. A signal light box tester according to claim 2, characterized in that, The band signal indicator includes eight band signal indicator lights, from the first band signal indicator light to the eighth band signal indicator light, which are respectively connected to the output terminals of the eight corresponding signal paths of the signal light box under test; The eight band signal indicator lights are used to display the output signal information of the signal light box under the corresponding band signal.

4. A signal light box tester according to claim 1, characterized in that, The central signal light box test assembly also includes a light guide plate control switch, used to control the power supply connection mode of the light box under test; the connection mode includes a connection mode connected to the output terminal of the dimming knob and a connection mode directly connected to the power supply voltage adjustment assembly.

5. A signal light box tester according to claim 4, characterized in that, The input terminal of the second band selection switch includes one input pin, and the output terminal of the second band selection switch includes eight pins from signal 1 output pin to signal 8 output pin; The gear selector switch has one input pin at its input terminal and eight output pins, from output pin J4 to output pin J11. The input pin of the second band selection switch is connected to the power supply voltage regulation component, and the output pins of signal 1 to signal 8 are respectively connected to one or more of the output pins of J4 to J11; The input pin of the gear selection switch is connected to the output terminal of the power supply voltage regulation component, and the output pins J4 to J11 are connected to the signal path input terminals of the external test signal light box of the relay.

6. A signal light box tester according to claim 1, characterized in that, The lighting brightness control box test assembly also includes a channel selection switch, used to control the connection method between the output terminal of the lighting brightness control box test assembly and the left and right channels of the signal light box under test.

7. A signal light box tester according to claim 1, characterized in that, The input terminal of the tester body is connected to an external AC power source via a fuse.

8. A signal light box tester according to claim 1, characterized in that, The power control switch includes a 28V power control switch and a 220V power control switch.

9. A signal light box tester according to claim 1, characterized in that, The panel also includes a primary self-test switch, a secondary self-test switch, a tertiary self-test switch, and their corresponding self-test indicator lights; One end of each of the first-level self-test switch, the second-level self-test switch, and the third-level self-test switch is connected to the output terminal of the power supply voltage regulation component, and the other end is connected to the input terminal of the signal light box under test via a relay, which is used to control the connection mode of the working power supply of the signal light box under test.

10. A signal light box tester according to claim 9, characterized in that, The panel also includes a constantly flashing switch for controlling the lighting mode of the self-test indicator light.

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