Thermal resistance temperature sensor

Abstract

The utility model relates to the technical field of sensors, in particular to a thermal resistance temperature sensor, which comprises a front shell, a front groove is arranged at the tail of the front shell, a telescopic rod is arranged in the front groove, a rear shell is arranged below the front shell, the outer diameter of the rear shell is equal to that of the front shell, and the telescopic rod is arranged in the rear shell. The top end of the rear shell is provided with a rear groove, the inner diameter of the rear groove is equal to the inner diameter of the front groove, the telescopic rod extends into the rear groove, a shock pad is arranged in the front shell, a thermistor is arranged in the shock pad, a damping spring is arranged below the shock pad, and a wire hole is formed in the telescopic rod. A battery is arranged in the tail end of the rear shell, and a single-chip microcomputer is arranged in a shell body of the rear shell. According to the utility model, the front shell is drawn out by using the telescopic rod, so that a long distance can be increased, positions which cannot be touched at ordinary times can be detected conveniently, and convenience is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a thermal resistance temperature sensor. Background Art

[0002] Existing thermal resistor temperature sensors will cause problems of varying degrees after installation: inaccurate temperature monitoring and large temperature difference; the temperature measurement position cannot be effectively fixed, which will cause falling problems; the temperature measurement equipment has severe internal wear and tear and is easily damaged; the temperature measurement point is not tightly sealed, causing temperature measurement equipment failure; the temperature sensor wiring method is simple, which is prone to circuit breaks and virtual connections; the temperature measurement equipment is not easy to maintain, and disassembly and replacement will cause equipment and sensor failures and other problems.

[0003] There are many existing technologies for thermal resistance temperature sensors, such as:

[0004] Chinese patent publication number CN105157862A discloses a thermal resistor temperature sensor, including a probe, a resistor, an insulating porcelain storage sleeve, a stainless steel storage sleeve, a junction box, a lead-out wiring port, a fixed interface a and a fixed interface, the probe has a built-in resistor, the probe is connected to a matching protective tube, the matching protective tube is composed of an insulating porcelain storage sleeve and a stainless steel storage sleeve, the matching protective tube is fixedly connected to the junction box by a fixed interface a, located on the left side of the junction box, the lead-out wire interface is located below the junction box, and is connected to the junction box by a fixed interface b, and the probe is equipped with a heat radiation shielding sleeve, which is detachable. The beneficial effects of the present invention are: reducing thermal radiation errors and reducing measurement errors caused by energy exchange.

[0005] However, as can be seen from the above, the prior art, when in use, protects the thermistor through insulating porcelain and a stainless steel storage sleeve to make the measurement more accurate. When it is necessary to measure the inside of a narrow area, the length is not enough to bring the thermistor close to the measurement position, resulting in reduced work efficiency.

[0006] In view of this, the utility model provides a novel thermal resistance temperature sensor. Utility Model Content

[0007] The purpose of the utility model is to provide a thermal resistance temperature sensor to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides a thermal resistor temperature sensor, comprising a front shell, a front groove is provided at the rear of the front shell, a telescopic rod is provided inside the front groove, the telescopic rod can slide inside the front groove, a rear shell is provided below the front shell, the outer diameter of the rear shell is equal to the outer diameter of the front shell, a rear groove is provided at the top of the rear shell, the inner diameter of the rear groove is equal to the inner diameter of the front groove, the telescopic rod extends into the interior of the rear groove, the telescopic rod can slide inside the rear groove, and the front shell and the rear shell are connected by the telescopic rod.

[0009] As a further improvement of the present technical solution, a shock-absorbing pad is provided inside the front shell, a thermistor is provided inside the shock-absorbing pad, a shock-absorbing spring is provided at the bottom of the shock-absorbing pad, the top end of the shock-absorbing spring is fixedly connected to the shock-absorbing pad, and the bottom end of the shock-absorbing spring is fixedly connected to the front shell.

[0010] As a further improvement of the present technical solution, a battery is provided inside the tail end of the rear shell, a switch button is provided on the tail end surface of the rear shell, the switch button is connected to the battery via a wire, and a single-chip microcomputer is provided inside the shell wall of the rear shell, the single-chip microcomputer is connected to the battery via a wire.

[0011] As a further improvement of the technical solution, a wire hole is provided in the middle of the telescopic rod, and the thermistor is connected to the battery and the single-chip microcomputer respectively through wires.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the thermal resistance temperature sensor, the distance between the front housing and the rear housing can be increased by the telescopic rod, so that the front housing can be extended into a narrow area for detection, thereby increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0015] Figure 1 A cross-sectional view of the overall structure of the sensor of the utility model;

[0016] Figure 2 A three-dimensional schematic diagram of the overall structure of the sensor of the present invention.

[0017] The meaning of each number in the figure is:

[0018] 10. front housing; 11. shock-absorbing pad; 12. thermistor; 13. shock-absorbing spring; 14. front groove;

[0019] 20. Telescopic rod; 21. Wire hole;

[0020] 30. Rear housing; 31. Rear groove; 32. Battery; 33. Switch button; 34. Single chip microcomputer. DETAILED DESCRIPTION

[0021] The current existing technology, when in use, uses insulating porcelain and stainless steel storage sleeves to protect the thermistor, making the measurement more accurate. When it is necessary to measure the inside of a narrow area, the length is not enough to bring the thermistor close to the measurement location, resulting in reduced work efficiency.

[0022] See also Figure 1-Figure 2 As shown, the present embodiment provides a thermal resistor temperature sensor, including a front shell 10, a front groove 14 is provided at the rear of the front shell 10, a telescopic rod 20 is provided inside the front groove 14, and its main function is to connect and fix, and the telescopic rod 20 can slide inside the front groove 14, a rear shell 30 is provided below the front shell 10, and the outer diameter of the rear shell 30 is equal to the outer diameter of the front shell 10, and a rear groove 31 is provided at the top of the rear shell 30, and the inner diameter of the rear groove 31 is equal to the inner diameter of the front groove 14, and the telescopic rod 20 extends into the interior of the rear groove 31, and the telescopic rod 20 can slide inside the rear groove 31, and the front shell 10 and the rear shell 30 are connected by the telescopic rod 20, and its main purpose is to change the distance between the front shell 10 and the rear shell 30 through the telescopic rod 20 to meet the use functions in different environments.

[0023] First, a shock-absorbing pad 11 is provided inside the front shell 10, and its main purpose is to reduce vibration and protect the internal structure. A thermistor 12 of model NTC-5D-11 is provided inside the shock-absorbing pad 11. Its resistance value changes with the change of temperature, and the temperature can be obtained according to its resistance value. A shock-absorbing spring 13 is provided at the bottom of the shock-absorbing pad 11, and its main purpose is to reduce vibration and protect the internal structure. The top end of the shock-absorbing spring 13 is fixedly connected to the shock-absorbing pad 11, and the bottom end of the shock-absorbing spring 13 is fixedly connected to the front shell 10.

[0024] Furthermore, a battery 32 is provided inside the tail end of the rear shell 30, and its main function is to provide power for the device. A switch button 33 is provided on the tail end surface of the rear shell 30, and its main function is to switch the power of the device. The switch button 33 is connected to the battery 32 through a wire. A single-chip computer 34 is provided inside the shell wall of the rear shell 30, and its model is HW-109. It can store and run programs. The main function of the stored program is to convert the resistance value of the thermistor 12 to calculate the temperature value. The single-chip computer 34 is connected to the battery 32 through a wire.

[0025] Furthermore, a wire hole 21 is provided in the middle of the telescopic rod 20, the main purpose of which is to allow the wire to pass through to connect the circuit structure of the front shell 10 and the rear shell 30, and the thermistor 12 is connected to the battery 32 and the single-chip computer 34 respectively through the wire.

[0026] The thermal resistance temperature sensor in this embodiment is used in specific situations:

[0027] Turn on the switch button 33, the battery 32 transmits power to the thermistor 12 and the single-chip microcomputer 34 through the wire, and the front shell 10 of the device is brought close to the monitoring point. When the monitoring point is in a narrow gap, pull the front shell 10, and the telescopic rod 20 begins to be pulled out, so that the distance between the front shell 10 and the rear shell 30 increases, so that the front shell 10 can smoothly approach the monitoring point. The thermistor 12 changes its resistance value due to heat, and the resistance value is transmitted to the single-chip microcomputer 34 through the wire. The single-chip microcomputer 34 runs a program to calculate the temperature based on the received information. This technology can increase work efficiency.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A thermal resistance temperature sensor, comprising a front housing (10), characterized in that: The front housing (10) is provided with a front groove (14) at the rear end, a telescopic rod (20) is provided inside the front groove (14), and the telescopic rod (20) can slide inside the front groove (14); a rear housing (30) is provided below the front housing (10), the outer diameter of the rear housing (30) is equal to the outer diameter of the front housing (10); a rear groove (31) is provided at the top end of the rear housing (30), the inner diameter of the rear groove (31) is equal to the inner diameter of the front groove (14), the telescopic rod (20) extends into the interior of the rear groove (31), and the telescopic rod (20) can slide inside the rear groove (31); the front housing (10) and the rear housing (30) are connected via the telescopic rod (20).

2. The thermal resistance temperature sensor according to claim 1, characterized in that: A shock absorbing pad (11) is provided inside the front housing (10), a thermistor (12) is provided inside the shock absorbing pad (11), a shock absorbing spring (13) is provided at the bottom of the shock absorbing pad (11), the top end of the shock absorbing spring (13) is fixedly connected to the shock absorbing pad (11), and the bottom end of the shock absorbing spring (13) is fixedly connected to the front housing (10).

3. The thermal resistance temperature sensor according to claim 2, characterized in that: A battery (32) is arranged inside the rear end of the rear shell (30), a switch button (33) is arranged on the surface of the rear end of the rear shell (30), the switch button (33) is connected to the battery (32) via a wire, and a single-chip computer (34) is arranged inside the shell wall of the rear shell (30), the single-chip computer (34) is connected to the battery (32) via a wire.

4. The thermal resistance temperature sensor according to claim 3, characterized in that: A wire hole (21) is provided in the middle of the telescopic rod (20), and the thermistor (12) is connected to the battery (32) and the single-chip computer (34) respectively through wires.

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