Semiconductor gas sensor temperature compensator

Abstract

The utility model discloses a semiconductor gas sensor temperature compensator which comprises a control box body, one side of the control box body is fixedly connected with a long-strip connecting seat, one side surface of the long-strip connecting seat is provided with a long-strip through groove, a sliding rod is installed in the long-strip through groove in a sliding mode, one end of the sliding rod is fixedly connected with a connecting wire, and the other end of the sliding rod is fixedly connected with the control box body. The connecting wire is slidably connected to one side of the long-strip connecting base, one end of the connecting wire is connected with a compensator through a circuit, the outer surface of the compensator is fixedly connected with a protective cylinder, the protective cylinder is fixedly connected to the surface of one end of the connecting wire in a sleeving mode, and a compensation hole is formed in the outer surface of the protective cylinder; the compensation holes are uniformly distributed in the outer surface of the protection cylinder at equal angles, the front end of the interior of the protection cylinder is provided with an insertion hole, and a detection head is fixedly attached to the surface of the inner wall of the insertion hole, so that accurate detection can be performed after sleeving installation, efficient compensation is facilitated, and the device is convenient, stable and high in adaptability.

Description

Technical Field

[0001] The utility model relates to the field of sensors, and more specifically to a temperature compensator for a semiconductor gas sensor. Background Art

[0002] During the online monitoring of gas concentration, the gas sensor will have a certain error between its measured value and the actual value due to the fluctuation of ambient temperature. In the process of high-precision and low-concentration gas monitoring, the influence of ambient temperature is particularly significant. At present, the temperature compensation methods of gas sensors mainly include two methods: temperature compensation based on hardware circuits and software temperature compensation based on neural networks. The temperature compensation method based on hardware circuits mainly uses the thermistor near the sensor to perform signal conditioning to obtain a temperature compensation circuit that is approximately consistent with the temperature drift characteristics of the sensor. The sensor output is subtracted from the output of the temperature compensation circuit to achieve hardware-based temperature compensation.

[0003] The utility model with authorization announcement number CN206649007U discloses a gas sensor temperature compensation device, including a probe module for monitoring gas concentration, sensing gas temperature changes, and monitoring ambient temperature values; a signal conditioning and data acquisition module for primary temperature compensation, temperature sensor signal conditioning, and realizing gas concentration and ambient temperature data acquisition; a computer module for secondary temperature compensation; the device is used for a gas sensor temperature compensation method, including primary temperature compensation, signal processing, and secondary temperature compensation: the utility model realizes rough temperature compensation of the gas sensor through primary temperature compensation; realizes accurate temperature compensation of the gas sensor through secondary temperature compensation by computer; utilizes the thermistor near the gas sensor to realize the acquisition of the gas sensor temperature drift change signal; this method improves the temperature compensation effect and avoids the tedious and time-consuming debugging. At the same time, the algorithm is simple and convergent, easy to implement, and avoids the cost increase caused by high complexity.

[0004] In the above disclosed structure, multiple components are connected through circuits for detection and compensation, and cannot be installed in separate combinations, which affects the connection and use. It is also inconvenient to accurately align the sensor position for detection and compensation. The accuracy and stability are poor and need to be improved. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a semiconductor gas sensor temperature compensator, which installs a long connecting seat through the control box body, so as to install the connecting wire and the compensator, which is convenient for split installation and conducive to combined alignment, and the detection head and the combination wire are installed inside the protective tube, which can be accurately detected after the installation, which is conducive to efficient compensation, convenient and stable, and highly adaptable.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A semiconductor gas sensor temperature compensator comprises a control box, one side of which is fixedly connected to a long strip connecting seat, one side surface of which is provided with a long strip through groove, a sliding rod is slidably installed inside the long strip through groove, one end of the sliding rod is fixedly connected to a connecting wire, the connecting wire is slidably connected to a side position of the long strip connecting seat, one end of the connecting wire is connected to a compensator through a circuit, the outer surface of the compensator is fixedly connected to a protective tube, the protective tube is fixedly sleeved on one end surface of the connecting wire, the outer surface of the protective tube is provided with compensation holes, the compensation holes are evenly distributed on the outer surface of the protective tube at equal angles, the inner front end of the protective tube is provided with a plug-in hole, the inner wall surface of the plug-in hole is fixedly fitted with a detection head, one end of the detection head is connected to a combination wire through a circuit, the combination wire is connected in parallel to the compensator through the circuit, and the combination wire is evenly distributed on the inner wall surface of the plug-in hole.

[0008] Furthermore, a conductive plate is fixedly connected inside the long strip connecting seat, and the conductive plate pair is located on one side of the long strip connecting groove.

[0009] Furthermore, one end of the sliding rod is fixedly connected with a conductive sheet, and the conductive sheet is slidably mounted on the surface of the conductive plate.

[0010] Furthermore, the conductive sheet is connected to one end of the connecting line through a circuit, and the conductive sheet is slidably inserted into the interior of the long connecting seat. The conductive sheet is connected through a conductive plate, and can be slidably installed for electrical connection, which is convenient for split installation for control compensation and has high adaptability.

[0011] Furthermore, a tensioning spring is fixedly mounted on one side of the conductive sheet, and the tensioning spring is located on both sides of the sliding rod.

[0012] Furthermore, one end of the tightening spring is fixedly connected to a tightening ring, and the tightening ring is tightened to the inner surface of the long strip connecting seat.

[0013] Furthermore, the tightening ring is slidably installed on one end surface of the sliding rod and is located in the internal position of the long connecting seat. The tightening ring is connected by a tightening spring and can be installed in combination to facilitate support positioning and avoid excessive looseness. At the same time, it can be slidably adjusted, which is stable and efficient.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) This solution installs a long connecting seat through the control box, so as to install the connecting wire and compensator, which is convenient for split installation and conducive to combined alignment. In addition, the detection head and combined wire are installed inside the protective tube, which can be accurately detected after installation, which is conducive to efficient compensation, convenient and stable, and highly adaptable.

[0016] (2) The conductive sheet is connected by a conductive plate, which can be slidably installed for electrical connection, which is convenient for split installation for control compensation and has high adaptability.

[0017] (3) The tightening ring is connected by a tightening spring, and can be installed in combination, which is convenient for supporting and positioning, avoiding excessive looseness, and can be slidably adjusted, which is stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the protective tube of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the protective tube of the utility model;

[0021] Figure 4 For the utility model Figure 1 Enlarged view of point A where the conductive sheet is connected.

[0022] Description of the numbers in the figure:

[0023] 1 control box, 11 long connecting seat, 12 long through slot, 13 sliding rod, 14 connecting wire, 15 compensator, 16 protective tube, 17 compensation hole, 18 plug hole, 2 combination wire, 21 detection head, 22 conductive plate, 23 conductive sheet, 24 tightening spring, 25 tightening ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 and Figure 3A semiconductor gas sensor temperature compensator includes a control box 1. A signal conditioning and data acquisition module is installed in the control box 1. The signal conditioning and data acquisition module includes a hardware temperature compensation circuit, a temperature sensor measurement circuit, a subtraction circuit, an A / D converter, a main control unit FPGA and a USB conversion circuit. The control box 1 can be detected and controlled. No further description is given. A long connecting seat 11 is fixedly connected to one side of the control box 1. A long through groove 12 is provided on one side of the long connecting seat 11. A sliding rod 13 is slidably installed inside the long through groove 12. The sliding rod 13 slides inside the long through groove 12 to adjust the connection position and spacing, avoid mutual interference and confusion, and improve safety and stability. One end of the sliding rod 13 is fixedly connected to a connecting wire 14. The connecting wire 14 is slidably connected to one side of the long connecting seat 11. One end of the connecting wire 14 is connected to a circuit. The compensator 15 can perform temperature compensation for the gas and is convenient for combined use. A protective tube 16 is fixedly connected to the outer surface of the compensator 15. The protective tube 16 is fixedly sleeved on one end surface of the connecting line 14. A compensation hole 17 is provided on the outer surface of the protective tube 16. Connection is made through the compensation hole 17 to facilitate heat conduction, improve temperature compensation efficiency, and facilitate installation and use. The compensation holes 17 are evenly distributed at equal angles on the outer surface of the protective tube 16. A plug-in hole 18 is provided at the inner front end of the protective tube 16. A detection head 21 is fixedly fitted on the inner wall surface of the plug-in hole 18, which can be positioned by plugging in the plug-in hole 18, which is conducive to fitting the detection head 21 to the sensor position, facilitating accurate detection and convenient compensation. One end of the detection head 21 is connected to the combination line 2 through a circuit. The combination line 2 is connected to the compensator 15 in parallel through a circuit. The combination line 2 is evenly distributed on the inner wall surface of the plug-in hole 18.

[0026] See also Figure 1 and Figure 3 A conductive plate 22 is fixedly connected to the inside of the long strip connecting seat 11, and the conductive plate 22 is located on one side of the long strip connecting groove 12. One end of the sliding rod 13 is fixedly connected to a conductive sheet 23. The conductive sheet 23 is slidably installed on the surface of the conductive plate 22. The conductive sheet 23 is connected to one end of the connecting line 14 through a circuit. The conductive sheet 23 is slidably inserted into the inside of the long strip connecting seat 11. The conductive sheet is connected through the conductive plate, and can be slidably installed for electrical connection, which is convenient for split installation for control compensation and has high adaptability.

[0027] See also Figure 1 and Figure 3A tightening spring 24 is fixedly installed on one side of the conductive sheet 23, and the tightening spring 24 is located on both sides of the sliding rod 13. One end of the tightening spring 24 is fixedly connected to a tightening ring 25, and the tightening ring 25 is tightly connected to the inner surface of the long strip connecting seat 11. The tightening ring 25 is slidably installed on one end surface of the sliding rod 13 and is located in the inner position of the long strip connecting seat 11. The tightening ring is connected by the tightening spring, and can be installed in combination, which is convenient for support and positioning to avoid excessive looseness. At the same time, it can be slidably adjusted, which is stable and efficient.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A semiconductor gas sensor temperature compensator, comprising a control box (1), one side of the control box (1) is fixedly connected to a long connecting seat (11), one side surface of the long connecting seat (11) is provided with a long through groove (12), characterized in that: A sliding rod (13) is slidably installed inside the long through slot (12), one end of the sliding rod (13) is fixedly connected to a connecting wire (14), the connecting wire (14) is slidably connected to a side position of the long connecting seat (11), one end of the connecting wire (14) is connected to a compensator (15) through a circuit, the outer surface of the compensator (15) is fixedly connected to a protective tube (16), the protective tube (16) is fixedly sleeved on one end surface of the connecting wire (14), and the protective tube (16) The outer surface of the protective tube (16) is provided with compensation holes (17), the compensation holes (17) are evenly distributed at equal angles on the outer surface of the protective tube (16), the inner front end of the protective tube (16) is provided with a plug hole (18), the inner wall surface of the plug hole (18) is fixedly fitted with a detection head (21), one end of the detection head (21) is connected to a combination line (2) through a circuit, the combination line (2) is connected in parallel to the compensator (15) through the circuit, and the combination line (2) is evenly distributed on the inner wall surface of the plug hole (18).

2. A semiconductor gas sensor temperature compensator according to claim 1, characterized in that: A conductive plate (22) is fixedly connected inside the long strip connecting seat (11), and the conductive plate (22) is located on one side of the long strip through slot (12).

3. The semiconductor gas sensor temperature compensator according to claim 1, characterized in that: One end of the sliding rod (13) is fixedly connected to a conductive sheet (23), and the conductive sheet (23) is slidably mounted on the surface of the conductive plate (22).

4. A semiconductor gas sensor temperature compensator according to claim 3, characterized in that: The conductive sheet (23) is connected to one end of the connecting line (14) via a circuit, and the conductive sheet (23) is slidably inserted into the interior of the long strip connecting seat (11).

5. The semiconductor gas sensor temperature compensator according to claim 3, characterized in that: A tensioning spring (24) is fixedly mounted on one side of the conductive sheet (23), and the tensioning spring (24) is located on both sides of the sliding rod (13).

6. A semiconductor gas sensor temperature compensator according to claim 5, characterized in that: One end of the tightening spring (24) is fixedly connected to a tightening ring (25), and the tightening ring (25) is tightly connected to the inner surface of the long strip connecting seat (11).

7. A semiconductor gas sensor temperature compensator according to claim 6, characterized in that: The tightening ring (25) is slidably mounted on one end surface of the sliding rod (13) and is located inside the long strip connecting seat (11).

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