Turnout diode tester with indicating lamp

Abstract

The utility model discloses a turnout diode tester with an indicating lamp, which relates to a diode testing device and comprises a storage battery and a testing circuit, and the testing circuit comprises a first access terminal, a second access terminal, a first triode and a second triode. The positive electrode of the storage battery is connected with the first access terminal, the positive electrode of the storage battery is also connected with the collector electrode of the first triode, the emitter electrode of the first triode is connected with the negative electrode of the storage battery, and a first indicating lamp group is connected between the collector electrode and the emitter electrode of the first triode; the second access terminal is connected with the base electrode of the first triode and the base electrode of the second triode at the same time, a second indicator lamp set is connected between the base electrode and the collector electrode of the second triode, and the emitter electrode of the second triode is connected with the negative electrode of the storage battery. The device is simple in structure and easy to operate, does not need commercial power, meets the requirement of on-site testing, and achieves the purpose of improving the testing efficiency.

Description

Technical Field

[0001] The utility model relates to a diode testing device, and more specifically, to a turnout diode tester with an indicator light. Background Art

[0002] In a turnout test circuit, a diode in a switch machine converts alternating current into direct current through rectification to meet the normal operation of the circuit and the stable transmission of signals. Turnout diodes are usually used in railway signal systems to ensure the accuracy and reliability of turnout conversion.

[0003] Before use, turnout diodes need to be tested in the maintenance workshop of the railway signal section. The traditional testing method is to use a multimeter or a special testing device to test the forward and reverse resistances of turnout diodes, and judge the performance of turnout diodes through the resistance values to determine whether they are usable. However, according to user feedback, in the testing of many turnout diodes, the common faults of turnout diodes are short circuit and open circuit. The resistance parameters of normal turnout diodes are basically the same, but the time required to test turnout diodes with a testing device is relatively long, and it is also necessary to connect to the mains power to test, which cannot meet the requirements of on-site random testing. Therefore, the testing device is not convenient to use. Based on this, we have improved the turnout diode testing device. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a turnout diode tester with an indicator light in view of the deficiencies of the prior art, which meets the requirements of on-site random testing and achieves the purpose of improving the testing efficiency.

[0005] A turnout diode tester with an indicator light according to the utility model includes a storage battery and a testing circuit. The testing circuit includes a first access terminal, a second access terminal, a first triode and a second triode; the positive pole of the storage battery is connected to the first access terminal, the positive pole of the storage battery is also connected to the collector of the first triode, the emitter of the first triode is connected to the negative pole of the storage battery, and a first indicator light group is connected between the collector and the emitter of the first triode; the second access terminal is simultaneously connected to the bases of the first triode and the second triode, a second indicator light group is connected between the base and the collector of the second triode, and the emitter of the second triode is connected to the negative pole of the storage battery.

[0006] As a further improvement, a self-locking switch is connected between the storage battery and the first access terminal.

[0007] As a further improvement, the first access terminal is connected with a twenty-second resistor, and one end of the twenty-second resistor is simultaneously connected to the collector of the first triode and the first indicator light group.

[0008] For further improvement, the first indicator light group consists of a twenty-first indicator light and a twenty-second indicator light connected in series.

[0009] Furthermore, both indicator lights in the first indicator light group are red LEDs.

[0010] For further improvement, the second indicator light group consists of a twelfth resistor, an eleventh indicator light, and a twelfth indicator light connected in series.

[0011] Furthermore, both indicator lights in the second indicator light group are green LEDs.

[0012] For further improvement, the base of the first triode is connected to the second access terminal through a twenty-first resistor; the base of the second triode is connected to the second access terminal through an eleventh resistor.

[0013] For further improvement, the second access terminal is connected to the negative pole of the storage battery through two resistors connected in series.

[0014] For further improvement, the turnout diode tester further includes an installation box composed of an upper cover and a lower cover; the storage battery and the test circuit are both installed in the installation box, and conductive seats are provided on both sides of the installation box, serving as the first access terminal and the second access terminal respectively; a heat dissipation hole is provided on one side of the installation box.

[0015] Advantageous Effects

[0016] The advantages of the present utility model are as follows: The test requirements for turnout diodes are met by the test circuit composed of two indicator light groups, two triodes, and a storage battery. Compared with the traditional method of testing resistance through a dedicated test device or a multimeter, the tester of the present utility model not only has a simple structure and is easy to operate, but also does not require mains power, meeting the requirements of on-site random testing and achieving the purpose of improving the test efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the test circuit of the present utility model;

[0018] Figure 2 It is a schematic top view structure diagram of the installation box of the present utility model;

[0019] Figure 3 It is based on Figure 2 The left side structure diagram of the installation box. Specific Embodiments

[0020] The present utility model will be further described below in conjunction with embodiments, but it does not constitute any limitation to the present utility model. Any person's limited modifications within the scope of the claims of the present utility model are still within the scope of the claims of the present utility model.

[0021] Referring to Figures 1-3 , a turnout diode tester with an indicator light of the present utility model includes an installation box 1, a storage battery BA, and a test circuit. The storage battery BA and the test circuit are both installed in the installation box 1. Among them, the storage battery BA uses a 9V battery; the test circuit includes a first access terminal CH1, a second access terminal CH2, a first triode G1, and a second triode G2. The positive electrode of the storage battery BA is connected to the first access terminal CH1 through a self-locking switch SW. The self-locking switch SW is used to control the on-off of the test circuit. One end of the self-locking switch SW is respectively connected to the first access terminal CH1 and the twenty-second resistor R22. One end of the twenty-second resistor R22 is simultaneously connected to the collector of the first triode G1 and the first indicator light group. A first indicator light group is connected between the collector and the emitter of the first triode G1. The emitter of the first triode G1 is connected to the negative electrode of the storage battery BA. The base of the first triode G1 is connected to the second access terminal CH2 through the twenty-first resistor R21. Thus, when the self-locking switch SW is closed and the two access terminals are open, the indicator lights in the first indicator light group are lit.

[0022] In this embodiment, the first indicator light group is composed of a twenty-first indicator light LED21 and a twenty-second indicator light LED22 connected in series. Among them, the two indicator lights in the first indicator light group are both red LEDs. That is, when the turnout diode tester lights up red, it indicates that the two access terminals are open.

[0023] The base of the second triode G2 is connected to the second access terminal CH2 through the eleventh resistor R11. A second indicator light group is connected between the base and the collector of the second triode G2. The emitter of the second triode G2 is connected to the negative electrode of the storage battery BA. Thus, when the self-locking switch SW is closed and the two access terminals are conducting, both triodes are conducting, the first indicator light group goes out, and the indicator lights in the second indicator light group are lit.

[0024] In this embodiment, the second indicator light group is composed of a twelfth resistor R12, an eleventh indicator light LED11, and a twelfth indicator light LED12 connected in series. Among them, the two indicator lights in the second indicator light group are both green LEDs. That is, when the turnout diode tester lights up green, it indicates that the two access terminals are conducting.

[0025] Preferably, the second access terminal CH2 is connected to the negative electrode of the storage battery BA through two resistors connected in series. These two resistors, namely resistor R02 and resistor R01, are in parallel with the circuit structure of the second indicator light group and the second triode G2, which can improve the load capacity at the back end of the test circuit and prevent the phenomenon that the first indicator light group is also lit when the two access terminals are turned on.

[0026] For the installation box 1, it mainly consists of an upper cover 2 and a lower cover 3. Both the upper cover 2 and the lower cover 3 are plastic parts, and the two covers are connected by screws. A plurality of through holes are opened on the upper cover 2, which are respectively used for inserting the self-locking switch SW and the indicator light, facilitating the operation of the self-locking switch SW and observing the on and off states of the indicator light. In a specific design, the through holes on the upper cover 2 for inserting the indicator light can be set to two, and a red light and a green light can be inserted respectively. Conductive seats are provided on both sides of the installation box 1, serving as the first access terminal CH1 and the second access terminal CH2 respectively. Specifically, one end of the two conductive seats is welded to the corresponding solder joints on the PCB board of the test circuit, and the other end passes through the installation box 1 and extends to the outside. During testing, only need to make the two pins of the turnout diode contact the two conductive seats one by one. The conductive seat can be a metal sheet or a connecting clip, etc. A heat dissipation hole 4 is opened on one side of the installation box 1 for dissipating heat from the test circuit and the storage battery BA.

[0027] The working principle of the present utility model is as follows: When the self-locking switch SW is pressed and the two access terminals are not connected to the turnout diode, the bases of the two triodes are not powered. At this time, the storage battery BA and the first indicator light group in the test circuit form a loop, causing the two red LEDs of the first indicator light group to be lit.

[0028] The turnout diode is connected in the forward direction to the test circuit, that is, the first access terminal CH1 is connected to the anode and the second access terminal CH2 is connected to the cathode. If the two red LEDs of the first indicator light group are still in the lit state at this time, it is determined that the turnout diode is open; if the indicator lights of the first indicator light group are extinguished and the two indicator lights of the second indicator light group are both lit at this time, it is initially determined that the turnout diode is normal. Then the turnout diode is connected in the reverse direction to the test circuit. If the two indicator lights of the second indicator light group are still lit, it is determined that there is a short-circuit fault in the turnout diode; if the two indicator lights of the second indicator light group are extinguished and the two indicator lights of the first indicator light group are lit, it indicates that the turnout diode is normal.

[0029] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A turnout diode tester with an indicator light, characterized in that: The invention comprises a storage battery (BA) and a test circuit, wherein the test circuit comprises a first access terminal (CH1), a second access terminal (CH2), a first triode (G1) and a second triode (G2); the positive electrode of the storage battery (BA) is connected to the first access terminal (CH1), the positive electrode of the storage battery (BA) is also connected to the collector of the first triode (G1), the emitter of the first triode (G1) is connected to the negative electrode of the storage battery (BA), and a first indicator light group is connected between the collector and the emitter of the first triode (G1); the second access terminal (CH2) is simultaneously connected to the base of the first triode (G1) and the second triode (G2), a second indicator light group is connected between the base and the collector of the second triode (G2), and the emitter of the second triode (G2) is connected to the negative electrode of the storage battery (BA).

2. A switch diode tester with indicator light according to claim 1, characterized in that: A self-locking switch (SW) is connected between the storage battery (BA) and the first access terminal (CH1).

3. A switch diode tester with indicator light according to claim 1, characterized in that: The first access terminal (CH1) is connected to a twenty-second resistor (R22), and one end of the twenty-second resistor (R22) is simultaneously connected to the collector of the first transistor (G1) and the first indicator light group.

4. A switch diode tester with indicator light according to claim 1, characterized in that: The first indicator light group consists of a twenty-first indicator light (LED21) and a twenty-second indicator light (LED22) connected in series.

5. A switch diode tester with indicator light according to claim 4, characterized in that: Both indicator lights of the first indicator light group are red LEDs.

6. A switch diode tester with indicator light according to claim 1, characterized in that: The second indicator light group consists of a twelfth resistor (R12), an eleventh indicator light (LED11) and a twelfth indicator light (LED12) connected in series.

7. A switch diode tester with indicator light according to claim 6, characterized in that: Both indicator lights of the second indicator light group are green LEDs.

8. A switch diode tester with indicator light according to claim 1, characterized in that: The base of the first transistor (G1) is connected to the second access terminal (CH2) through a twenty-first resistor (R21); the base of the second transistor (G2) is connected to the second access terminal (CH2) through an eleventh resistor (R11).

9. A switch diode tester with indicator light according to claim 1, characterized in that: The second access terminal (CH2) is connected to the negative electrode of the battery (BA) via two resistors connected in series.

10. A switch diode tester with indicator light according to any one of claims 1 to 9, characterized in that: The switch diode tester also includes an installation box (1) consisting of an upper cover (2) and a lower cover (3); the storage battery (BA) and the test circuit are both installed in the installation box (1); conductive seats are provided on both sides of the installation box (1), serving as a first access terminal (CH1) and a second access terminal (CH2), respectively; and a heat dissipation hole (4) is provided on one side of the installation box (1).

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