A mobile temperature sensor detection device

Abstract

The utility model relates to a mobile temperature sensor detection device relates to temperature sensor detection technical field, including casing and install in casing's power supply unit, PLC, solid -state relay, heat dissipation fan, heating copper wire and standard temperature sensor, the bottom of casing is equipped with for moving walking wheel, power output of power supply unit is connected with PLC and solid -state relay electricity respectively, the control output of PLC is connected with heat dissipation fan and solid -state relay electricity respectively, power output of solid -state relay is connected with heating copper wire electricity, heating copper wire is equipped with standard temperature sensor, and standard temperature sensor's output is connected with PLC electricity, and the device can improve temperature sensor detection efficiency, and also and detect accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature sensor detection technical field, concretely relates to a mobile temperature sensor detection device. BACKGROUND

[0002] There is a temperature detection system in the railway passenger car, the system is to set up independent temperature sensor outside the air conditioner and battery pack box, for real -time detection air conditioner and battery pack box temperature variation, but because temperature sensor all need long -term operation, therefore need to detect the sensitivity of temperature sensor regularly, the traditional general first temperature sensor is taken off, uses temperature control box and detects the sensitivity of temperature sensor in proper order again, and a plurality of temperature sensors are installed back, but this mode has the following problems:

[0003] 1, the temperature sensor in different positions of passenger car detects different equipment, so its temperature sensing interval is different, thereby cannot be used mutually, and a plurality of temperature sensors are taken off and detected simultaneously, and are installed back in the original position, possibly position is installed wrong, thereby influence temperature detection system's accuracy, and a plurality of temperature sensors are taken off and detected in proper order, will influence the efficiency of temperature detection system whole detection;

[0004] 2, the traditional temperature control box generally uses the heating of heating resistance wire to heat, as temperature simulation point, lets temperature sensor detect whether temperature simulation point's temperature is accurate, to judge the sensitivity of temperature sensor is normal, but the conventional heating resistance wire due to its material and power supply mode, and lead to the slow speed of temperature rise, also influence the detection efficiency of temperature sensor.

[0005] Thus, we propose a device that can improve the detection efficiency and accuracy of temperature sensors. Utility model content

[0006] The utility model discloses a mobile temperature sensor detection device, which can improve the detection efficiency and accuracy of temperature sensors.

[0007] The utility model discloses the following technical scheme realizes:

[0008] A mobile temperature sensor detection device, comprising a shell, a power supply unit, a PLC, a solid-state relay, a cooling fan, a heating copper wire and a standard temperature sensor installed in the shell, the bottom of the shell is provided with walking wheels for movement, the power output end of the power supply unit is electrically connected with the PLC and the solid-state relay respectively, the control output end of the PLC is electrically connected with the cooling fan and the solid-state relay respectively, the power output end of the solid-state relay is electrically connected with the heating copper wire, the heating copper wire is provided with a standard temperature sensor, and the output end of the standard temperature sensor is electrically connected with the PLC.

[0009] Further, the power supply unit comprises a storage battery and an inverter, and the power output end of the storage battery is electrically connected with the PLC and the solid state relay through the inverter.

[0010] Further, the shell is externally fixedly provided with a display screen, and the signal input end of the display screen is electrically connected with the PLC.

[0011] Further, the PLC adopts a DVP14SS211 R model.

[0012] Further, the number of the standard temperature sensors is 3.

[0013] Further, the standard temperature sensor adopts a pasting type thermocouple.

[0014] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0015] The utility model discloses a mobile temperature sensor detection device, through walking wheel, can make this device have mobile walking ability, thereby can move to any temperature sensor to be measured place, then detect, effectively avoid the problem of wrong temperature sensor to be measured,

[0016] In addition, the heating copper wire has a fast heating speed due to the material characteristics, thereby improving the detection efficiency of the temperature sensor to be measured, and the cooling fan can cool the shell to ensure that the detection environment of each temperature sensor to be measured is the same and improve the detection accuracy of the temperature sensor to be measured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model.

[0018] Signs: 1, power supply unit;11, storage battery;12, inverter;2, solid state relay;3, PLC;4, heating copper wire;5 cooling fan;6, standard temperature sensor;7, display screen; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely in combination with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the utility model embodiment described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] As attached Figure 1 The mobile temperature sensor detection device shown includes a housing, and a power supply unit 1, a PLC 3, a solid-state relay 2, a cooling fan 5, a heating copper wire 4, and a standard temperature sensor 6 installed inside the housing. The bottom of the housing is equipped with wheels for movement, which enables the device to move to any temperature sensor for detection, effectively avoiding the problem of incorrect temperature sensor installation. It should be noted that the housing only needs to be equipped with wheels, and the movement can be achieved by manual pushing, without the need for a motor to achieve automatic movement, thereby reducing the power consumption of the power supply unit 1 and increasing the detection time of the device.

[0026] In addition, a handle for controlling the movement of the shell is arranged outside the shell, and the overall structure adopts light aluminum alloy material, the overall weight is not more than 100 kg, the static size is not more than 600 mm (length) x 600 mm (width) x 1100 mm (height), the device adopts 8-inch wheels, and has a damping and mute function;

[0027] The power output end of the power supply unit 1 is electrically connected with the PLC 3 and the solid-state relay 2, that is, the power supply unit 1 supplies power to the PLC 3 and the solid-state relay 2;

[0028] In addition, the power supply unit 1 includes a storage battery 11 and an inverter 12, the power output end of the storage battery 11 is electrically connected with the PLC 3 and the solid-state relay 2 through the inverter 12; wherein the output of the storage battery 11 is direct current, and the inverter 12 is used for converting the output of the direct current storage battery 11 into 220V alternating current, so as to supply to the PLC 3 and the solid-state relay 2;

[0029] The power output end of the solid-state relay 2 is electrically connected with the heating copper wire 4; wherein the heating copper wire 4 adopts pure copper material, the length is not more than 100 mm, the inner diameter is φ8 mm, the outer diameter is φ20 mm, the heating power is not more than 70W, the temperature rise is not less than 50℃ / min, the temperature resolution is ±0.1℃, in addition, the heating copper wire 4 can be bent into a coil structure or a continuous U-shaped structure, for making the heating of the heating copper wire 4 more concentrated, so as to improve the temperature rising speed;

[0030] The control output end of the PLC 3 is electrically connected with the heat dissipation fan 5 and the solid-state relay 2, the heating copper wire 4 is provided with a standard temperature sensor 6, and the output end of the standard temperature sensor 6 is electrically connected with the PLC 3, wherein the standard temperature sensor 6 detects the temperature change of the heating copper wire 4, in addition, the data input end of the PLC 3 is also electrically connected with the output end of the to-be-measured temperature sensor, for detecting the temperature change of the standard temperature sensor 6 and the to-be-measured temperature sensor, so as to complete the subsequent sensitivity analysis of the to-be-measured temperature sensor, in particular, the number of standard temperature sensors 6 is 3, which can ensure that the overall temperature of the heating copper wire 4 can be detected, and then the overall temperature of the heating copper wire 4 is kept uniform through the control of the PLC 3 on the inverter 12, and the temperature regulation range of the heating copper wire 4 is room temperature to +150℃, in addition, the standard temperature sensor 6 adopts a pasting type thermocouple, which can be directly installed on the heating copper wire 4, so as to ensure that the detection result of the standard temperature sensor 6 is more accurate;

[0031] And the overall automatic control can be realized through the PLC 3, wherein the solid-state relay 2 is used for controlling the heating time and the highest temperature of the heating copper wire 4, so that the automatic control process of the PLC 3 is as follows:

[0032] When the PLC 3 receives the detection start signal, the PLC 3 controls the solid-state relay 2 to be turned on, so that the power supply unit 1, the solid-state relay 2 and the heating copper wire 4 are in conduction, and the heating copper wire 4 is powered to be heated; when the device completes the detection on the temperature sensor to be detected, the PLC 3 controls the solid-state relay 2 to be turned off, and simultaneously starts the cooling fan 5, so that the solid-state relay 2, the power supply unit 1 and the heating copper wire 4 are in open circuit, the heating copper wire 4 is powered off to gradually return to normal temperature, and the cooling fan 5 works to cool the inside of the shell.

[0033] In particular, the PLC 3 adopts a DVP14SS211R model, the PLC 3 of which has a small size, is suitable for being installed in a control cabinet with limited space or directly on a machine, and is built-in with an RS-485 port, supports a MODBUS RTU protocol, is convenient for communicating with other devices such as the display screen 7, and can realize more communication options through an expansion module; in addition, the PLC 3 of this model directly integrates 2 analog input channels, which can be used to connect the temperature sensor to be detected and the standard temperature sensor 6, simplifies the system architecture, and reduces the requirement for additional hardware.

[0034] Embodiment 2

[0035] The display screen 7 is fixedly arranged outside the shell, and a signal input end of the display screen 7 is electrically connected with the PLC 3; through the connection with the PLC 3, the display screen 7 can display the temperature change value of the temperature sensor to be detected recorded and output by the PLC 3 in the detection process, and can also display the working and closing states of the solid-state relay 2 and the heating copper wire 4.

[0036] When the mobile temperature sensor detection device is implemented, first, the device is moved to the temperature sensor to be detected, then the temperature sensor to be detected is disassembled and placed at the heating copper wire 4, then the PLC 3 controls the solid-state relay 2 to be turned on to make the heating copper wire 4 be powered to be heated, and simultaneously the PLC 3 records the temperature changes of the standard temperature sensor 6 and the temperature sensor to be detected, so as to judge whether the sensitivity of the temperature sensor to be detected is normal; after the detection is completed, the PLC 3 controls the solid-state relay 2 to be turned off to turn off the heating copper wire 4, and then the PLC 3 starts the cooling fan 5 to rapidly cool the environment in the shell and the heating copper wire 4; meanwhile, the device is moved to the next temperature sensor to be detected.

[0037] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mobile temperature sensor detection apparatus, characterized by: It includes a shell, and a power supply unit (1), a PLC (3), a solid state relay (2), a cooling fan (5), a heating copper wire (4) and a standard temperature sensor (6) installed in the shell; the bottom of the shell is provided with walking wheels for movement; the power output ends of the power supply unit (1) are electrically connected with the PLC (3) and the solid state relay (2) respectively, the control output ends of the PLC (3) are electrically connected with the cooling fan (5) and the solid state relay (2) respectively; the power output end of the solid state relay (2) is electrically connected with the heating copper wire (4); the heating copper wire (4) is provided with the standard temperature sensor (6), and the output end of the standard temperature sensor (6) is electrically connected with the PLC (3).

2. The mobile temperature sensor detection apparatus of claim 1, wherein: The power supply unit (1) includes a storage battery (11) and an inverter (12), and the power output end of the storage battery (11) is electrically connected with the PLC (3) and the solid state relay (2) through the inverter (12) respectively.

3. The mobile temperature sensor detection apparatus of claim 1, wherein: A display screen (7) is fixedly arranged outside the shell, and the signal input end of the display screen (7) is electrically connected with the PLC (3).

4. The mobile temperature sensor detection apparatus of claim 1, wherein: The PLC (3) adopts a DVP14SS211 R model.

5. The mobile temperature sensor detection apparatus of claim 1, wherein: The number of the standard temperature sensors (6) is three.

6. The mobile temperature sensor detection apparatus of claim 1, wherein: The standard temperature sensor (6) adopts a pasting type thermocouple.

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