CN111609941A - Adjustment device for infrared thermometer, infrared temperature measurement system and working method - Google Patents

Abstract

The invention relates to the technical field of infrared temperature measurement, and discloses an adjustment device for an infrared thermometer, an infrared temperature measurement system and a working method. The adjustment device includes a first angle adjustment mechanism, a second angle adjustment mechanism and a control module. The first angle adjustment mechanism and the second angle adjustment mechanism are used to adjust the measurement angle of the probe from two different directions. The temperature measured by the thermometer controls the adjustment state of the first angle adjustment mechanism and/or the second angle adjustment mechanism, so as to adjust the measurement angle of the probe. The infrared temperature measurement system includes an infrared thermometer with adjustable probe angle and the adjustment device. Using the working method of the infrared temperature measurement system, the best temperature measurement position can be found according to the temperature change law, instead of manual control positioning, automatic control positioning can be realized, and the accuracy and repeatability of temperature measurement can be improved.

Description

Adjustment device for infrared thermometer, infrared temperature measurement system and working method

technical field

The invention relates to the technical field of infrared temperature measurement, in particular to an adjustment device for an infrared thermometer, an infrared temperature measurement system and a working method.

Background technique

In the process of silicon carbide crystal growth, temperature control is very critical. Since the silicon carbide crystal growth temperature range is very narrow, once a temperature change occurs, the quality of the crystal growth may be affected. Due to the need for temperature measurement, a hole is usually opened in the center of the insulation felt on the top of the crucible used, and the temperature at the top of the crucible is measured by an infrared thermometer. Different positions in the temperature measuring hole have different external radiation angles, resulting in different temperature distributions at different positions in the temperature measuring hole. There is at least a few tens of degrees of temperature deviation from the edge to the center, which will seriously affect the quality of the crystal. Therefore, the aiming of the infrared thermometer is a very important adjustment process in the crystal growth process. Since the thermal field is reloaded each time, the position will change and require multiple adjustments. In the prior art, a rotary slide that can be adjusted in two directions is generally used to manually adjust the infrared aiming position to aim as accurately as possible. However, due to the relatively large temperature change, it is difficult to find the precise aiming position; and manual adjustment is used, which is difficult to operate. High requirements for worker experience and poor repeatability.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

The purpose of the embodiment of the present invention is to provide an adjustment device, an infrared temperature measurement system and a working method for an infrared thermometer, so as to solve the difficulty in operation by manually adjusting the aiming position of the infrared thermometer in the prior art, Technical issues with poor accuracy.

(2) Technical solutions

In order to solve the above technical problems, an embodiment of the present invention provides an adjustment device for an infrared thermometer, comprising: a first angle adjustment mechanism, a second angle adjustment mechanism and a control module, the first angle adjustment mechanism and the The second angle adjustment mechanisms are respectively connected with the probes of the infrared thermometer, and are used to adjust the measurement angles of the probes from two different directions. The control module is respectively connected with the infrared thermometer, the first angle adjustment mechanism and the The second angle adjustment mechanism is electrically connected, and is used to control the adjustment state of the first angle adjustment mechanism and/or the second angle adjustment mechanism according to the temperature measured by the infrared thermometer, so as to adjust the temperature of the probe. Measure the angle.

The first angle adjustment mechanism includes a first stepping motor and a first rotating frame rotatably arranged around a first horizontal axis, and the output shaft of the first stepping motor is connected to the first end of the first rotating frame. connected, and the second end of the first rotating frame is connected with the probe through the second angle adjustment mechanism.

Wherein, the second angle adjustment mechanism includes a second stepping motor and a second rotating frame rotatably arranged around a second horizontal axis, and the second horizontal axis is perpendicular to the first horizontal axis, and the first horizontal axis is perpendicular to each other. The second end of the rotating frame is connected with the second stepping motor of the second angle adjustment mechanism, the output shaft of the second stepping motor is connected with the first end of the second rotating frame, the first The second ends of the two rotating frames are used for connecting with the probe of the infrared thermometer.

Wherein, the first rotating frame and the second rotating frame are both "L"-shaped bent plates.

Wherein, the control module includes a recorder, a comparator and a controller, and the recorder is electrically connected to the infrared thermometer for recording the measurement angle of the probe of the infrared thermometer and the position of the probe in the infrared thermometer. The corresponding temperature measured by the infrared thermometer when measuring the angle; the comparator is electrically connected to the recorder, and is used to compare the magnitude relationship of the temperature values measured by the infrared thermometer; the controller is respectively connected with The comparator, the first angle adjustment mechanism and the second angle adjustment mechanism are electrically connected, and are configured to pass the first angle according to the acquisition angle of the probe corresponding to the minimum temperature obtained by the comparison of the comparator. An angle adjustment mechanism and the second angle adjustment mechanism adjust the measurement angle of the probe.

Wherein, the recorder is respectively electrically connected with the first stepper motor of the first angle adjustment mechanism and the second stepper motor of the second angle adjustment mechanism, and is used for according to the first step The measurement angle of the probe is judged and recorded according to the pulse times of the advance motor and the second stepper motor.

Wherein, the controller is electrically connected to the first stepper motor of the first angle adjustment mechanism and the second stepper motor of the second angle adjustment mechanism, respectively, for controlling the first step The measurement angle of the probe is adjusted by the pulse times of the advance motor and the second stepper motor.

Wherein, an angle sensor is also included, the angle sensor is electrically connected with the recorder, and the measurement end of the angle sensor is connected with the probe for correcting the measurement angle of the probe recorded by the recorder.

The embodiment of the present invention also discloses an infrared temperature measurement system, comprising: an infrared thermometer with an adjustable probe angle and an adjustment device for the infrared thermometer according to the embodiment of the present invention, the infrared thermometer is used for the infrared thermometer. The adjustment device is installed on the infrared thermometer.

The embodiment of the present invention also discloses a working method using the infrared temperature measurement system according to the embodiment of the present invention, including:

S1. Place the infrared thermometer at the center of the temperature measurement hole, turn on the infrared thermometer, and measure the temperature of the temperature measurement hole;

S2. Set the first angle adjustment mechanism to standby, and adjust the measurement angle of the probe of the infrared thermometer through the second angle adjustment mechanism, and the control module adjusts the measurement angle of the probe to the infrared temperature measurement through the second angle adjustment mechanism The acquisition angle of the probe corresponding to the lowest temperature point measured by the instrument;

S3. Set the second angle adjustment mechanism to standby, and adjust the measurement angle of the probe of the infrared thermometer through the first angle adjustment mechanism, and the control module adjusts the measurement angle of the probe to the infrared temperature measurement through the first angle adjustment mechanism The acquisition angle of the probe corresponding to the lowest temperature point measured by the instrument.

(3) Beneficial effects

The adjusting device, the infrared temperature measuring system and the working method for the infrared thermometer provided by the embodiments of the present invention, during the measurement process of the infrared thermometer, the infrared thermometer is adjusted by the first angle adjustment mechanism and the second angle adjustment mechanism. The measurement angle of the probe is adjusted for one cycle, and the control module is used to determine the best measurement angle according to the temperature measured by the infrared thermometer, and control the adjustment state of the first angle adjustment mechanism and the second angle adjustment mechanism to adjust the probe. measurement angle. By adopting the adjusting device, infrared temperature measuring system and working method of the present invention, the best temperature measuring position can be found according to the law of temperature change, instead of manual control positioning, automatic control positioning can be realized, and the accuracy and repeatability of temperature measuring can be improved.

Description of drawings

FIG. 1 is a schematic structural diagram of an adjustment device for an infrared thermometer according to an embodiment of the present invention.

Reference number:

100: Infrared thermometer; 101: Probe; 201: The first stepping motor; 202: The first horizontal axis; 203: The first rotating frame; 301: The second stepping motor; 302: The second horizontal axis; 303: Second rotating frame.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIG. 1 , an embodiment of the present invention discloses an adjustment device for an infrared thermometer, including: a first angle adjustment mechanism, a second angle adjustment mechanism and a control module, the first angle adjustment mechanism and the second angle adjustment mechanism The adjustment mechanisms are respectively connected with the probes 101 of the infrared thermometer 100 for adjusting the measurement angles of the probes 101 from two different directions. The control module is electrically connected to the infrared thermometer 100, the first angle adjustment mechanism and the second angle adjustment mechanism respectively The connection is used to control the adjustment state of the first angle adjustment mechanism and/or the second angle adjustment mechanism according to the temperature measured by the infrared thermometer 100 to adjust the measurement angle of the probe 101 .

Specifically, in this embodiment, the measurement angles of the probe 101 of the infrared thermometer 100 are adjusted by the angle adjustment mechanisms in two different directions on the horizontal plane, so as to realize the adjustment of each measurement angle of the probe 101 in the horizontal plane.

Generally, the temperature at the center of the temperature measuring hole is the lowest, and the temperature gradually increases toward the edge. Ideally, the isotherm takes the center of the temperature measuring hole as the concentric circle, and the temperature gradually increases toward the edge of the temperature measuring hole. When the probe 101 of the infrared thermometer 100 moves toward the center of the temperature measuring hole, the temperature will gradually decrease, and when the probe 101 crosses the center position, the temperature will gradually increase. Therefore, the lowest value of the temperature measured by the infrared thermometer 100 should be the central position of the temperature measuring hole (under ideal conditions). The measurement angle of the probe 101 to find the precise measurement position.

The control module in this embodiment acquires the temperature measured by the infrared thermometer 100 and the angle adjusted by the first angle adjustment mechanism and the second angle adjustment mechanism. The probe 101 of the infrared thermometer 100 can be straightened vertically downward, and aim at the center of the temperature measuring hole as much as possible, and the measurement angle is specified as 0°. The corresponding angle of the probe 101 when the temperature is the lowest is screened out, and the first angle adjustment mechanism and the second angle adjustment mechanism are controlled to adjust the angle of the probe 101 according to the angle. For example, the first angle adjustment mechanism is controlled to stand by, the second angle adjustment mechanism adjusts the measurement angle of the probe 101, and the infrared thermometer 100 measures the temperature. After one measurement cycle is completed (that is, the measurement range covers the entire temperature measurement hole in this direction) ), and it is found by comparison that when the measurement angle is 10° (it may also be other values, here is only a schematic example) the temperature is the lowest, then the second angle adjustment mechanism is controlled to adjust the measurement angle of the probe 101 to 10°; The second angle adjustment mechanism is on standby, the first angle adjustment mechanism adjusts the measurement angle of the probe 101, and the infrared thermometer 100 measures the temperature. When the angle is 5° (it may be other values, this is just a schematic example), the temperature is the lowest, then the second angle adjustment mechanism is controlled to adjust the measurement angle of the probe 101 to 5°. Through the comparison of the two directions, the lowest temperature point can be automatically located. If accurate measurement is required, the above steps can be repeated to adjust the measurement angle repeatedly.

The adjusting device, the infrared temperature measuring system and the working method for the infrared thermometer 100 provided by the embodiment of the present invention, during the measurement process of the infrared thermometer 100, the infrared thermometer is measured by the first angle adjustment mechanism and the second angle adjustment mechanism. The measurement angle of the probe 101 of the thermometer 100 is adjusted for one cycle, and the control module is used to determine the optimal measurement angle according to the temperature measured by the infrared thermometer 100, and to control the adjustment of the first angle adjustment mechanism and the second angle adjustment mechanism state to adjust the measurement angle of the probe 101. By adopting the adjusting device, infrared temperature measuring system and working method of the present invention, the best temperature measuring position can be found according to the law of temperature change, instead of manual control positioning, automatic control positioning can be realized, and the accuracy and repeatability of temperature measuring can be improved.

The first angle adjustment mechanism includes a first stepping motor 201 and a first rotating frame 203 rotatably arranged around the first horizontal axis 202 , and the output shaft of the first stepping motor 201 is connected to the first end of the first rotating frame 203 , the second end of the first rotating frame 203 is connected to the probe 101 through the second angle adjustment mechanism. Specifically, the first stepping motor 201 used in this embodiment is provided with a reducer, and the function of the first stepping motor 201 is to drive the first rotating frame 203 to rotate around the first horizontal axis 202, and the first rotating frame 203 can The rotational motion of the first step motor 201 is transmitted to the second angle adjustment mechanism, and is transmitted to the probe 101 of the infrared thermometer 100 through the second angle adjustment mechanism.

Further, the second angle adjustment mechanism includes a second stepping motor 301 and a second rotating frame 303 rotatably arranged around a second horizontal axis 302, and the second horizontal axis 302 and the first horizontal axis 202 are perpendicular to each other, and the first rotating frame The second end of 203 is connected with the second stepping motor 301 of the second angle adjustment mechanism, the output shaft of the second stepping motor 301 is connected with the first end of the second rotating frame 303, and the second end of the second rotating frame 303 For connecting with the probe 101 of the infrared thermometer 100 . Specifically, the second stepping motor 301 used in this embodiment has a reducer, and the function of the second stepping motor 301 is to drive the second rotating frame 303 to rotate around the second horizontal axis 302, and the second horizontal axis 302 and The first horizontal axis 202 is in a vertical relationship, that is, if the second horizontal axis 302 is the X-axis direction of the horizontal plane, the first horizontal axis 202 is the Y-axis direction of the horizontal plane, and the probe 101 is driven by two rotating frames to swing back and forth, left and right to adjust. Measure the angle. It should be understood that the first horizontal axis 202 is coaxial with the output shaft of the first stepping motor 201 , and the second horizontal axis 302 is coaxial with the output shaft of the second stepping motor 301 . It is worth noting that the rotation directions of the dotted lines and arrows in FIG. 1 respectively represent the rotation trajectories of the first rotating frame 203 and the second rotating frame 303 around the corresponding axes.

Furthermore, the first rotating frame 203 and the second rotating frame 303 are both "L"-shaped bent plates. The "L"-shaped bent plate has two end faces, for example: the "L"-shaped bent plate of the first rotating frame 203, one of the end faces is mounted on the first stepping motor 201 and is coaxial with the output shaft of the first stepping motor 201. The shaft rotates to drive the other end face of the "L"-shaped bent plate to rotate together. The end face is installed on the second stepping motor 301 to drive the second stepping motor 301 to rotate. Similarly, one end surface of the “L”-shaped bent plate of the second rotating frame 303 is installed on the second stepping motor 301 , and the other end surface is installed on the probe 101 .

The control module includes a recorder, a comparator and a controller, and the recorder is electrically connected to the infrared thermometer 100 for recording the measurement angle of the probe 101 of the infrared thermometer 100 and the infrared temperature measurement when the probe 101 is at the measurement angle The corresponding temperature measured by the infrared thermometer 100; the comparator is electrically connected to the recorder, and is used to compare the magnitude relationship of the temperature values measured by the infrared thermometer 100; the controller is respectively connected with the comparator, the first angle adjustment mechanism and the second angle adjustment mechanism The electrical connection is used for the acquisition angle of the probe 101 corresponding to the minimum temperature obtained by the comparator comparison (the "acquisition angle" is not the actual measurement angle, it is the angle of the probe 101 obtained according to the inference corresponding to the lowest temperature point) to pass The first angle adjustment mechanism and the second angle adjustment mechanism adjust the measurement angle of the probe 101 . Specifically, in this embodiment, the recorder, comparator and controller of the control module can all be integrated into the PLC, wherein the recorder is mainly used to record the measured temperature and the corresponding measurement angle of the probe 101 , and the initial state of the probe 101 is specified as Set vertically, the recorder records the initial state as 0°. Since the temperature measurement principle of the infrared thermometer 100 is to convert the radiant energy of the infrared rays emitted by the object into electrical signals, the comparator can compare the electrical signals converted by the infrared thermometer 100 to obtain the relationship between the temperature values, or directly The magnitude relationship of the temperature values obtained by the infrared thermometer 100 is compared by a comparator. The controller acquires the acquisition angle corresponding to the probe 101 at the lowest temperature point, and adjusts the first angle adjustment mechanism and the second angle adjustment mechanism to adjust the measurement angle of the probe 101 according to the acquisition angle.

The recorder is respectively electrically connected to the first stepper motor 201 of the first angle adjustment mechanism and the second stepper motor 301 of the second angle adjustment mechanism, and is used for according to the first stepper motor 201 and the second stepper motor 301 The number of pulses to determine and record the measurement angle of the probe 101. Specifically, the first stepper motor 201 and the second stepper motor 301 use stepper motors of the same specification, and each time the pulse output shaft rotates at the same angle. After obtaining the angle of each output shaft rotation according to the specification of the stepper motor, The angle at which the first angle adjustment mechanism and/or the second angle adjustment mechanism drives the probe 101 to move can be determined by recording the number of pulses. For the convenience of calculation, the initial angle of the probe 101 is 0°, that is, it is set vertically. When the measurement angle of the probe 101 changes, it can be recorded as the corresponding angle, which is also the value of the deviation of the measurement angle of the probe 101 from the initial angle.

The controller is respectively electrically connected to the first stepper motor 201 of the first angle adjustment mechanism and the second stepper motor 301 of the second angle adjustment mechanism for controlling the first stepper motor 201 and the second stepper motor 301 the number of pulses to adjust the measurement angle of the probe 101. According to the specification of the stepping motor, the rotation angle of the rotating shaft can be known for each pulse. The controller in this embodiment only needs to control the pulse times of the first stepping motor 201 and the second stepping motor 301 to control the movement of the probe 101. If the angle of the probe 101 does not need to be adjusted, just turn off the stepper motor.

An angle sensor is also included, the angle sensor is electrically connected to the recorder, and the measurement end of the angle sensor is connected to the probe 101 for correcting the measurement angle of the probe 101 recorded by the recorder. Since the measurement angle of the probe 101 by the recorder in the above embodiment is determined by the pulse times of the first stepper motor 201 and the second stepper motor 301, the actual measurement angle of the probe 101 may deviate, and the real-time measurement angle of the probe 101 may be deviated by the angle sensor. The angle change of the probe 101 is monitored, and the value of the angle measured by the probe 101 in the recorder is corrected to ensure accurate measurement.

The embodiment of the present invention also discloses an infrared temperature measurement system, including an infrared thermometer 100 with an adjustable probe 101 angle and the adjustment device for the infrared thermometer 100 as in the above-mentioned embodiment, which is used for the infrared thermometer 100 The adjustment device is installed on the infrared thermometer 100 . It can be understood that, the infrared temperature measurement system of this embodiment can use the first angle adjustment mechanism and the second angle adjustment mechanism to adjust the measurement angle of the probe 101 of the infrared thermometer 100 in one cycle while measuring the temperature. , using the control module to determine the optimal measurement angle according to the temperature measured by the infrared thermometer 100 , and to control the adjustment states of the first angle adjustment mechanism and the second angle adjustment mechanism to adjust the measurement angle of the probe 101 .

The embodiment of the present invention also discloses the working method of the infrared temperature measurement system as described above, including:

S1, place the infrared thermometer 100 at the center of the temperature measuring hole, turn on the infrared thermometer 100, and measure the temperature of the temperature measuring hole;

S2. Set the first angle adjustment mechanism to stand by, and adjust the measurement angle of the probe 101 of the infrared thermometer 100 through the second angle adjustment mechanism, and the control module adjusts the measurement angle of the probe 101 through the second angle adjustment mechanism to The infrared thermometer 100 measures the acquisition angle of the probe 101 corresponding to the lowest temperature point;

S3. Set the second angle adjustment mechanism to standby, and adjust the measurement angle of the probe 101 of the infrared thermometer 100 through the first angle adjustment mechanism, and the control module adjusts the measurement angle of the probe 101 through the first angle adjustment mechanism to The infrared thermometer 100 measures the acquisition angle of the probe 101 corresponding to the lowest temperature point.

It should be understood that, before the control module controls the adjustment of the second angle adjustment mechanism (or the first angle adjustment mechanism) in steps S2 and S3, the second angle adjustment mechanism (or the first angle adjustment mechanism) should have completed one cycle of probe measurement Only by adjusting the angle can the acquisition angle of the probe corresponding to the lowest temperature point in the adjustment period be obtained.

It should be understood that the sequence of step S2 and step S3 can be exchanged and adjusted accordingly.

Among them, S4 is also included. Step S4 repeats step S2. In this embodiment, the measurement angle of the probe 101 is repeatedly adjusted and corrected by the second angle adjustment mechanism. According to actual calibration needs, step S3, or steps S2 and S3 may also be repeated to repeatedly calibrate the measurement angle of the probe 101, but the working method of the present invention is not limited to this.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. An adjustment device for an infrared thermometer, comprising: the device comprises a first angle adjusting mechanism, a second angle adjusting mechanism and a control module, wherein the first angle adjusting mechanism and the second angle adjusting mechanism are respectively connected with a probe of an infrared thermometer and used for adjusting the measuring angle of the probe from two different directions, and the control module is respectively electrically connected with the infrared thermometer, the first angle adjusting mechanism and the second angle adjusting mechanism and used for controlling the adjusting state of the first angle adjusting mechanism and/or the second angle adjusting mechanism according to the temperature measured by the infrared thermometer so as to adjust the measuring angle of the probe.

2. The adjusting device for an infrared thermometer according to claim 1, wherein the first angle adjusting mechanism includes a first stepping motor and a first rotating frame rotatably disposed around a first horizontal axis, an output shaft of the first stepping motor is connected to a first end of the first rotating frame, and a second end of the first rotating frame is connected to the probe through the second angle adjusting mechanism.

3. The adjusting device for the infrared thermometer according to claim 2, wherein the second angle adjusting mechanism includes a second stepping motor and a second rotating frame rotatably disposed around a second horizontal axis, the second horizontal axis is perpendicular to the first horizontal axis, a second end of the first rotating frame is connected to the second stepping motor of the second angle adjusting mechanism, an output shaft of the second stepping motor is connected to a first end of the second rotating frame, and a second end of the second rotating frame is used for being connected to a probe of the infrared thermometer.

4. The adjustment device for an infrared thermometer according to claim 3, wherein said first and second rotating frames are both L-shaped bent plates.

5. The adjusting device for the infrared thermometer according to claim 3, wherein the control module comprises a recorder, a comparator and a controller, the recorder is electrically connected with the infrared thermometer and is used for recording the measurement angle of the probe of the infrared thermometer and the corresponding temperature measured by the infrared thermometer when the probe is at the measurement angle; the comparator is electrically connected with the recorder and is used for comparing the relationship of the temperature values measured by the infrared thermometer; the controller is respectively electrically connected with the comparator, the first angle adjusting mechanism and the second angle adjusting mechanism and used for adjusting the measuring angle of the probe through the first angle adjusting mechanism and the second angle adjusting mechanism according to the obtaining angle of the probe corresponding to the temperature minimum value obtained through comparison of the comparator.

6. The adjusting device for an infrared thermometer according to claim 5, wherein the recorder is electrically connected to the first stepping motor of the first angle adjusting mechanism and the second stepping motor of the second angle adjusting mechanism, respectively, for judging and recording the measurement angle of the probe according to the number of pulses of the first stepping motor and the second stepping motor.

7. The adjustment device for an infrared thermometer according to claim 5, wherein said controller is electrically connected to said first stepping motor of said first angle adjustment mechanism and said second stepping motor of said second angle adjustment mechanism, respectively, for controlling the number of pulses of said first stepping motor and said second stepping motor to adjust the measurement angle of said probe.

8. The adjustment device for an infrared thermometer according to claim 5, further comprising an angle sensor electrically connected to the recorder, wherein a measuring end of the angle sensor is connected to the probe for correcting the measuring angle of the probe recorded by the recorder.

9. An infrared temperature measurement system, comprising: an infrared thermometer with an adjustable probe angle and an adjusting device for an infrared thermometer according to any one of claims 1 to 8, the adjusting device for an infrared thermometer being mounted to the infrared thermometer.

10. A method of operating with an infrared thermometry system according to claim 9, comprising:

s1, placing the infrared thermometer at the center of the temperature measuring hole, starting the infrared thermometer, and measuring the temperature of the temperature measuring hole;

s2, setting the first angle adjusting mechanism to be in standby, adjusting the measuring angle of the probe of the infrared thermometer through the second angle adjusting mechanism, and adjusting the measuring angle of the probe to the acquiring angle of the probe corresponding to the lowest temperature measured by the infrared thermometer through the second angle adjusting mechanism by the control module;

and S3, setting the second angle adjusting mechanism to be in standby, adjusting the measuring angle of the probe of the infrared thermometer through the first angle adjusting mechanism, and adjusting the measuring angle of the probe to the acquiring angle of the probe corresponding to the lowest temperature measured by the infrared thermometer through the first angle adjusting mechanism by the control module.

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