Temperature controller detection device of window glass heating system

Abstract

A window glass heating system temperature controller detection device relates to the technical field of railway locomotives. The window glass heating system temperature controller detection device is used for being connected with a temperature controller to be measured so as to detect the temperature controller to be measured. The temperature controller to be measured comprises a temperature control unit and a heating unit; a thermistor is arranged at the control end of the temperature control unit and used for obtaining the temperature of window glass; the heating unit is used for outputting heating voltage at the output end according to a return signal of the temperature control unit; the detection device comprises a control test module which comprises a potentiometer and is used for being connected with the control end of a temperature control unit; and the load indication module is used for being connected with the output end of the heating unit. In an exemplary embodiment of the invention, the detection device further comprises a power supply module which is used for being connected with the input end of the temperature controller to be measured so as to supply power to the temperature controller to be measured. The detection device disclosed by the invention can perform wiring method inspection and function detection on the temperature controller of the window glass heating system.

Description

Technical Field

[0001] The present disclosure relates to the technical field of railway locomotives, and more particularly, to a temperature controller detection device for a window glass heating system. Background Art

[0002] A heating resistor is provided inside the front window glass of the locomotive for heating the front window glass to achieve the purpose of defogging and defrosting. The heating resistor of the front window is usually controlled by a temperature controller.

[0003] The temperature controller for heating the front window glass of the locomotive is bonded to the front window glass of the locomotive. During the locomotive maintenance process, it is necessary to disassemble and separate the temperature controller and then restore the wiring. The separated temperature controller cannot be tested separately, and due to the inconsistent wiring methods of various types of temperature controllers, there are often malfunction problems after assembly, making it difficult to achieve the temperature control function. Summary of the Invention

[0004] The present disclosure provides a temperature controller detection device for a window glass heating system, which can check the wiring method and perform functional detection on the temperature controller of the window glass heating system.

[0005] According to one aspect of the present disclosure, there is provided a temperature controller detection device for a window glass heating system, which is used to be connected to a temperature controller to be measured for detecting the temperature controller to be measured;

[0006] The temperature controller to be measured includes a temperature control unit and a heating unit; a thermistor is provided at the control end of the temperature control unit for obtaining the temperature of the window glass; the heating unit is used to output a heating voltage at the output end according to the return signal of the temperature control unit.

[0007] The detection device includes:

[0008] A control test module, including a potentiometer, for connecting to the control end of the temperature control unit;

[0009] A load indication module, for connecting to the output end of the heating unit.

[0010] In an exemplary embodiment of the present disclosure, the detection device further includes a power supply module, which is used to be connected to the input end of the temperature controller to be measured to supply power to the temperature controller to be measured.

[0011] In an exemplary embodiment of the present disclosure, the power supply module includes a first power supply interface; the first power supply interface is used to be connected to a 220V AC power supply to provide 220V AC power for the temperature controller to be measured.

[0012] In an exemplary embodiment of the present disclosure, the power supply module includes an auxiliary power supply module. The auxiliary power supply module includes a battery pack, an inverter, and a second power supply interface. The inverter is configured to convert the direct current of the battery pack into 220V alternating current to supply power to the temperature-controlled device to be measured through the second power supply interface.

[0013] In an exemplary embodiment of the present disclosure, the control test module includes at least two potentiometers. Wiring terminals are respectively led out from both ends of the potentiometers; a wiring switch is provided between the potentiometers, and the wiring switch is used to change the series-parallel relationship of the potentiometers; wherein, the control terminal of the temperature control unit is used to be connected to the wiring terminals.

[0014] In an exemplary embodiment of the present disclosure, the control test module includes a first potentiometer and a second potentiometer. A first wiring terminal and a second wiring terminal are respectively led out from both ends of the first potentiometer, and a third wiring terminal and a fourth wiring terminal are respectively led out from both ends of the second potentiometer. A fourth switch is provided between the second wiring terminal and the third wiring terminal. The control terminal of the temperature control unit is used to be connected to at least two of the first wiring terminal, the second wiring terminal, the third wiring terminal, and the fourth wiring terminal.

[0015] In an exemplary embodiment of the present disclosure, the power supply module has a first input terminal and a second input terminal, which are used to be connected to the input terminal of the temperature-controlled device to be measured; a first indicator light and a first voltmeter are connected in series between the first input terminal and the second input terminal.

[0016] In an exemplary embodiment of the present disclosure, third input terminal and a fourth input terminal are respectively led out from both ends of the load indication module, which are used to be connected to the output terminal of the heating unit.

[0017] In an exemplary embodiment of the present disclosure, a second indicator light and a second voltmeter are connected in series between the third input terminal and the fourth input terminal.

[0018] In an exemplary embodiment of the present disclosure, the detection device includes a test box. The control test module and the load indication module are arranged in the test box; the test box has a test panel, and the contacts of the wiring terminals are arranged on the test panel; the test panel is provided with an adjustment knob for adjusting the resistance value of the potentiometer.

[0019] The thermostat detection device for the window glass heating system of the present disclosure can utilize the resistance change of the potentiometer in the control test module to simulate the resistance change of the thermistor in the temperature control unit of the temperature controller, that is, it can simulate the low-temperature environment of the window glass. By changing the resistance value of the potentiometer, the temperature control range can be measured and adjusted. The load indication module is connected to the output end of the heating unit. When the heating unit normally outputs the heating voltage, the load indication module can give an indication. Thus, the thermostat detection device of the present disclosure can conduct test detection on a separate thermostat separated from the locomotive front window glass, which can reduce the maintenance and detection time and cost of the locomotive glass.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic circuit diagram of an exemplary embodiment of the thermostat detection device for the window glass heating system of the present disclosure.

[0023] Figure 2 It is a schematic diagram of the test box in an exemplary embodiment of the thermostat detection device for the window glass heating system of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0025] Unless otherwise specified or stated, the technical terms or scientific terms used in this disclosure shall have the ordinary meanings understood by those with ordinary skills in the field to which this disclosure pertains. The terms "a", "one", "the", "said" and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the existence of additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second" are only used as labels and do not limit the quantity, importance or order of their objects.

[0026] As used in this disclosure, the connection of "Terminal A and Terminal B" can be a direct connection between Terminal A and Terminal B, or an indirect connection through an intermediate medium.

[0027] In the subsequent description, suffixes such as "module" or "unit" used to represent components are only for the convenience of the description of this application, and they have no specific meaning in themselves. Therefore, "module", "unit", etc. can be used interchangeably.

[0028] In the field of railway locomotives, the front window observation glass of a locomotive cab usually has an electric heating function. The front window glass is heated through a window glass heating system to remove frost, snow, ice, etc. on the front window glass, ensuring the observation effect of locomotive crew members in low-temperature weather and guaranteeing the safety of train operation. In the related art, the window glass heating system usually includes a temperature controller (hereinafter referred to as a thermostat) and heating resistors provided inside the glass. The heating effect can be achieved by energizing the heating resistors.

[0029] In the related art, the temperature controller can include a power management unit, a temperature control unit and a heating unit. The power management unit is used to connect to an external power supply for power supply and convert the external power supply into the power supply required by the system; the temperature control unit can include a thermistor for obtaining the temperature of the window glass; the heating unit is used to output a heating voltage according to the temperature of the window glass.

[0030] However, the locomotive glass heating thermostat is usually adhered to the front window glass of the locomotive. During the maintenance process, the thermostat needs to be disassembled and separated, and then the wiring needs to be restored. The separated thermostat cannot be tested and detected separately, and because the thermostat may belong to multiple suppliers and the wiring methods of each supplier are not unified, during maintenance, the wiring method of the junction box is unknown, resulting in possible failures after wiring assembly and making it difficult to achieve the temperature control function.

[0031] In view of the above problems, this disclosure provides a thermostat detection device for a window glass heating system, which is used to be connected to the thermostat to be measured for detecting the thermostat to be measured.

[0032] Reference Figure 1As shown, the temperature controller detection device for the window glass heating system includes a control test module 10 and a load indication module 20; the control test module 10 includes a potentiometer for connecting to the control terminal of the temperature control unit; the load indication module 20 is used to connect to the output terminal of the heating unit.

[0033] The temperature controller detection device for the window glass heating system of the present disclosure can utilize the resistance change of the potentiometer in the control test module 10 to simulate the resistance change of the thermistor of the temperature control unit in the temperature controller, that is, it can simulate the low-temperature environment of the window glass. By changing the resistance value of the potentiometer, the temperature control range can be measured and adjusted. The load indication module 20 is connected to the output terminal of the heating unit. When the heating unit normally outputs the heating voltage, the load indication module 20 can give an indication. Thus, the temperature controller detection device of the present disclosure can test and detect a separate temperature controller separated from the locomotive front window glass, which can reduce the maintenance and detection time and cost of the locomotive glass.

[0034] In an exemplary embodiment of the present disclosure, the detection device further includes a power supply module 30, and the power supply module 30 is used to connect to the input terminal of the temperature controller to be measured to supply power to the temperature controller to be measured. The detection device of this exemplary embodiment can directly supply power to the temperature controller to be measured, so that the detection of the temperature controller does not depend on the temperature controller itself being powered by an external power supply, making the detection more convenient.

[0035] For example, referring to Figure 1 As shown, the power supply module 30 includes a first power supply interface; the first power supply interface is used to connect to a 220V AC power supply to provide 220V AC power for the temperature controller to be measured. The first power supply interface can be suitably used during detection at a fixed work station.

[0036] Referring to Figure 1 As shown, the power supply module 30 can also include an auxiliary power supply module. The auxiliary power supply module includes a battery pack, an inverter 31 and a second power supply interface. The inverter 31 is used to convert the direct current of the battery pack into 220V AC power to supply power to the temperature controller to be measured through the second power supply interface. The rated voltage of the battery pack can be 12V. When power supply is inconvenient outdoors or on-site, the auxiliary power supply module can convert the 12V battery pack into 220V AC power through the inverter 31 and optimize the power output through a shunt reactor L to meet the working power requirements.

[0037] In an exemplary embodiment, a quantum module 32 is connected in parallel at both ends of the battery pack. The quantum module 32 can include a battery capacity display meter so that the remaining power of the battery pack can be checked at any time when detecting the temperature controller to be measured.

[0038] Referring to Figure 1As shown, the power supply module 30 may further include a second switch SA2. When using the temperature controller detection device of the present disclosure, it is possible to select between an externally connected 220V AC power supply and the auxiliary power supply module to accommodate use under multiple working conditions. The power supply module 30 may further include a first switch SA1, and the first switch SA1 may be connected in series with the inverter 31.

[0039] In an exemplary embodiment of the present disclosure, the power supply module 30 has a first input terminal and a second input terminal for connecting to the input terminal of the temperature controller to be measured; a first indicator light HG1 and a first voltmeter V1 are connected in series between the first input terminal and the second input terminal.

[0040] In an exemplary embodiment of the present disclosure, refer to Figure 1 As shown, the control test module 10 includes at least two potentiometers, and wiring terminals are respectively led out from both ends of the potentiometers; a wiring switch is provided between the potentiometers, and the wiring switch is used to change the series-parallel relationship of the potentiometers; wherein, the control terminal of the temperature control unit is used to connect to the wiring terminals.

[0041] Specifically, the potentiometer is used to simulate the resistance value change of the thermistor of the temperature control unit in the temperature controller. The number of potentiometers provided can be set according to the number of thermistors in the temperature control unit. Refer to Figure 1 As shown, taking the control test module 10 including a first potentiometer RP1 and a second potentiometer RP2 as an example, a first wiring terminal and a second wiring terminal are respectively led out from both ends of the first potentiometer RP1; a third wiring terminal and a fourth wiring terminal are respectively led out from both ends of the second potentiometer RP2. A fourth switch SA4 is provided between the second wiring terminal and the third wiring terminal, and the control terminal of the temperature control unit is used to connect to at least two of the first wiring terminal, the second wiring terminal, the third wiring terminal, and the fourth wiring terminal.

[0042] Exemplarily, refer to Figure 1 As shown, the control test module 10 further includes a third switch SA3. One end of the third switch SA3 is connected to one end of the output terminal of the power supply module 30; the other end of the third switch SA3 is connected to one end of the input terminal of the load indication module 20.

[0043] By opening and closing the fourth switch SA4, the series-parallel relationship between the first potentiometer RP1 and the second potentiometer RP2 can be changed, thereby changing the series-parallel relationship of the simulated thermistors.

[0044] In an exemplary embodiment of the present disclosure, third and fourth input terminals are respectively led out from both ends of the load indication module 20 for connecting to the output terminal of the heating unit. Refer to Figure 1As shown, a second indicator light HG2 and / or a second voltmeter V2 can be serially arranged between the third input terminal and the fourth input terminal. The second indicator light and the second voltmeter can indicate the output voltage of the output terminal, which is used to judge the operation condition of the heating unit, and further realize the function detection test of the temperature controller to be measured.

[0045] In particular, the indicator lights described in the present disclosure, such as the first indicator light HG1 and the second indicator light HG2, can adopt various forms. For example, they can be lamp beads or display screens, etc., as long as they can indicate the circuit state.

[0046] In particular, the detection device provided in the present exemplary embodiment can also be used to determine the wiring method of the temperature controller to be measured. The temperature control unit of the temperature controller uses different numbers of thermocouples and different wiring methods. The control test module 10 at least includes a first potentiometer RP1 and a second potentiometer RP2. The resistance value ranges of the first potentiometer RP1 and the second potentiometer RP2 are relatively large. The wiring method is adjusted using wiring leads, and the control end of the temperature control unit is connected to the wiring terminals (such as the first wiring terminal, the second wiring terminal, the third wiring terminal, and the fourth wiring terminal) led out by the first potentiometer RP1 and the second potentiometer RP2. When the temperature controller functions normally, an effective thermocouple wiring method can be determined.

[0047] By converting the resistance value corresponding to the potentiometer in the detection device into a temperature value according to the temperature-resistance relationship of the thermistor, the temperature range controlled by the temperature controller to be measured can be obtained. By adjusting the internal potentiometer of the temperature controller to be measured, the control temperature range can be adjusted, and the detection device is used for test verification, so that the control temperature range can be quantitatively controlled.

[0048] Exemplarily, a process of detecting a temperature controller to be measured by using the temperature controller detection device of the window glass heating system provided in the present disclosure includes:

[0049] Connect the power supply module 30 to the input terminal of the temperature controller to be measured. Specifically, a 220V AC power supply can be connected to the AC input terminal of the temperature controller to be measured through the first power supply interface, and the second switch SA2 is closed to conduct the 220V AC power supply and the input terminal of the temperature controller to be measured, and the first indicator light HG1 lights up.

[0050] Set the potentiometer resistance of the control test module 10 to the maximum value to simulate the low-temperature environment of the front window glass. Connect the control end lead of the temperature control unit to the wiring terminals (such as the first wiring terminal, the second wiring terminal, the third wiring terminal, and the fourth wiring terminal) led out by the first potentiometer RP1 and the second potentiometer RP2. When the power is turned on and the second indicator light HG2 lights up, it indicates that the temperature controller to be measured can normally control the heating start in this low-temperature state.

[0051] Adjust the resistance value of the potentiometer of the control test module 10 to gradually decrease, simulating the gradual increase in the temperature of the front window glass. When the resistance value reaches a certain critical point, the second indicator light HG2 goes out. Through the thermocouple comparison table, the resistance value corresponding to the potentiometer in the detection device at this time is converted into a temperature value according to the temperature-resistance relationship of the thermistor, so as to obtain the temperature value at which the current temperature controller to be measured controls the heating to turn off.

[0052] In an exemplary embodiment of the present disclosure, as shown in Figure 2 The detection device includes a test box, and the relevant components of the control test module 10 and the load indication module 20 are all arranged in the test box. The test box has a test panel, and the contacts of the above-mentioned wiring terminals are arranged on the test panel; the test panel is provided with an adjustment knob, which can be used to adjust the resistance value of the potentiometer, such as the resistance values of the first potentiometer RP1 and the second potentiometer RP2.

[0053] Exemplarily, the detection device uses leads and terminals with good insulation performance, and can be conveniently and effectively connected to the leads and terminals of the temperature controller to be measured.

[0054] When the overhaul locomotive enters the factory, the manufacturer of the front window glass is clear, but the temperature controllers of the front window glass may belong to multiple manufacturers. The control principles and wiring methods of each manufacturer are diverse, and the temperature controller is usually potted and encapsulated inside and does not come with a schematic diagram. For the overhaul manufacturer, the internal wiring method and control principle of the temperature controller are often unknown. The detection device of the present disclosure can simulate the power supply through the power supply module 30, simulate the temperature control conditions through the resistance change of the potentiometer in the control test module 10, and simulate the output result through the load indication module 20 to conduct a function test on the temperature controller of the window glass heating system.

[0055] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A window glass heating system thermostat detection device, characterized in that: Used to be connected to a temperature controller to be tested so as to detect the temperature controller to be tested; The temperature controller to be tested includes a temperature control unit and a heating unit; a thermistor is provided at the control end of the temperature control unit for obtaining the temperature of the window glass; The heating unit is used to output a heating voltage at an output end according to a return signal from the temperature control unit; The detection device comprises: A control test module, including a potentiometer, used to be connected to a control terminal of the temperature control unit; The load indicating module is used to be connected to the output end of the heating unit.

2. The window glass heating system thermostat detection device according to claim 1, characterized in that: The detection device also includes a power supply module, which is used to be connected to the input end of the temperature controller to be tested to supply power to the temperature controller to be tested.

3. The window glass heating system thermostat according to claim 2, characterized in that: The power supply module includes a first power supply interface; the first power supply interface is used to connect to a 220V AC power supply to provide 220V AC power to the temperature controller to be tested.

4. The window glass heating system thermostat according to claim 2, characterized in that: The power module includes an auxiliary power supply module, which includes a battery pack, an inverter and a second power supply interface. The inverter is used to convert the direct current of the battery pack into 220V alternating current to power the temperature controller to be tested through the second power supply interface.

5. The window glass heating system thermostat detection device according to claim 1, characterized in that: The control test module includes at least two potentiometers, and wiring terminals are respectively led out from both ends of the potentiometers; a wiring switch is provided between each of the potentiometers, and the wiring switch is used to change the series-parallel relationship of the potentiometers; wherein the control end of the temperature control unit is used to be connected to the wiring terminal.

6. The window glass heating system thermostat detection device according to claim 5, characterized in that: The control test module includes a first potentiometer and a second potentiometer, the two ends of the first potentiometer lead out a first terminal and a second terminal respectively, the two ends of the second potentiometer lead out a third terminal and a fourth terminal respectively, a fourth switch is provided between the second terminal and the third terminal, and the control end of the temperature control unit is used to connect to at least two of the first terminal, the second terminal, the third terminal and the fourth terminal.

7. The window glass heating system thermostat detection device according to claim 2, characterized in that: The power supply module has a first input terminal and a second input terminal, which are used to be connected to the input terminal of the temperature controller to be tested; a first indicator light and a first voltmeter are connected in series between the first input terminal and the second input terminal.

8. The window glass heating system thermostat detection device according to claim 2, characterized in that: The two ends of the load indicating module lead out a third input end and a fourth input end respectively, which are used to be connected to the output end of the heating unit.

9. The window glass heating system thermostat detection device according to claim 8, characterized in that: A second indicator light and a second voltmeter are connected in series between the third input terminal and the fourth input terminal.

10. The window glass heating system thermostat detection device according to claim 5, characterized in that: The detection device comprises a test box, wherein the control test module and the load indication module are arranged in the test box; the test box has a test panel, and the contact points of the wiring terminals are arranged on the test panel; the test panel is provided with an adjustment knob for adjusting the resistance value of the potentiometer.

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