CN211262532U - Temperature field measuring and balancing device for electronic thermometer verification - Google Patents

Abstract

The utility model discloses an electronic clinical thermometer examines and determine and measures and balancing unit with warm field. The utility model comprises a constant temperature water tank, an objective table, a thermometer oblique inserting device, an L-shaped cylindrical scale bar, a liquid level detection switch and a temperature measurement balancing device, wherein the objective table is arranged above the constant temperature water tank, three thermometer oblique inserting devices are respectively and symmetrically arranged at the front side and the rear side of the objective table, and the liquid level detection switch is fixed on the objective table through an inverted L-shaped support frame; the linear module is installed on the objective table, and it links to each other with the linear module to carry thing square top surface through the connecting rod, and wherein one side of objective table is fixed with L type glass cylinder scale stick through falling L type support frame, and L type glass cylinder scale stick tail end passes through the silicone tube and links to each other with constant temperature water tank bottom delivery port. The utility model discloses can guarantee that electrothermometer and thermometer are in same examination position and height, solve the liquid level decline problem that the water yield evaporation leads to, improve the temperature measurement accuracy of examining and determine the electrothermometer in-process thermometer.

Description

A temperature field measurement and balance device for electronic thermometer verification

technical field

The utility model relates to a temperature field measurement and balance device, in particular to a temperature field measurement and balance device for electronic thermometer verification.

Background technique

In the process of verifying the electronic thermometer, a constant temperature water tank is required to provide the ambient temperature for verifying the electronic thermometer. The quality of its performance directly affects the accuracy of the measurement results. To verify the electronic thermometer in the constant temperature water tank, the thermometer needs to provide the standard temperature and the difference between the electronic thermometer display screen. readings for comparison.

At present, the method of inserting the thermometer into the constant temperature environment is basically vertical insertion. This method cannot make the thermometer and the electronic thermometer adapt to the verification height and position in the constant temperature water tank, and at the same time, it does not satisfy the shortest insertion length and insertion height of the thermometer itself and the electronic thermometer. According to the verification requirements of the same level, the measured temperature results have a certain deviation from the real standard temperature. During the verification process, part of the water in the constant temperature water tank will be taken away by the moving electronic thermometer, and will evaporate due to the working temperature and ambient temperature, so the insertion length of the thermometer will be affected by the liquid level of the constant temperature water tank. The relationship between the measured temperature shows that the two are in a proportional relationship, so the accuracy of the temperature measurement of the thermometer cannot be guaranteed when the water level drops.

In the process of verifying electronic thermometers at this stage, the method of measuring the temperature field of the constant temperature tank is to use a thermometer fixed in the central area of the constant temperature tank to measure the temperature. However, when a large number of electronic thermometers enter the temperature field, it will cause certain interference to the temperature field. The temperature value measured by a single temperature point cannot accurately represent the temperature distribution of the entire temperature field under disturbance conditions.

Utility model content

In order to solve the problems in the background technology, the utility model provides a temperature field measurement and balance device for the verification of an electronic thermometer, which solves the problem that the liquid level of the constant temperature water tank drops in the process of verifying the electronic thermometer, and ensures that the electronic thermometer and the thermometer are at the same verification height, The temperature measurement accuracy of the thermometer in the process of verifying the electronic thermometer is improved.

The technical scheme adopted by the utility model is as follows:

The utility model comprises a constant temperature water tank, a stage, an oblique insertion device of a thermometer, an L-shaped cylindrical scale rod, a liquid level detection switch and a temperature measurement balance device. A stage is arranged above the constant temperature water tank. Three thermometer oblique insertion devices are symmetrically arranged on the sides respectively, and the three thermometer oblique insertion devices on the same side are arranged at equal intervals along the edge of the stage.

There are small U-shaped grooves and large U-shaped grooves on the front side of the stage. The bottom of the liquid level detection switch passes through the small U-shaped groove from top to bottom and is immersed under the liquid level of the constant temperature water tank. The top of the liquid level detection switch passes through the inverted L-shaped support frame. Fixed on the stage; the liquid level balancing device includes a linear module and a load-carrying grid, the linear module is installed on the stage through the mounting seat, and the top surface of the load-carrying grid is connected with the linear module through a connecting rod, and the load The bottom of the object square passes through the large U-shaped tank from top to bottom and is in contact with the liquid surface of the constant temperature water tank.

One of the left and right sides of the stage is fixed with an L-shaped glass cylindrical scale rod through an inverted L-shaped support frame. One end of the L-shaped glass cylindrical scale rod is connected to the water outlet at the bottom of the constant temperature water tank through a silicone tube, and the other end of the L-shaped glass cylindrical scale rod is connected. It is embedded in the semicircular card slot opened on the top surface of the inverted L-shaped support frame.

Since the L-shaped glass cylindrical scale rod is connected to the constant temperature water tank, according to the principle of equal pressure at the same height, the liquid level in the L-shaped glass cylindrical scale rod is equal to the liquid level of the constant temperature water tank. The L-shaped glass cylindrical scale rod is convenient to observe the constant temperature water tank. The height of the inner liquid level.

Each of the thermometer oblique insertion devices is mainly composed of a connecting column, a supporting rod, a clamping groove and a bracket. The connecting column is provided with a cylindrical groove, and a supporting rod is sleeved in the cylindrical groove through a bearing, and the supporting rod can be inserted into the column. It rotates in the groove, the top of the connecting column is fixed with a card slot by a support rod, the bottom of the bracket is connected with the upper end of the card slot by hinges, the thermometer is placed in the strip slot opened in the bracket, and a rubber sleeve is embedded in the strip slot; Adjust the rotation angle of the bracket to adjust the height and depth of the thermometer inserted into the liquid level of the constant temperature water tank; the verification position of the electronic thermometer is the same as the position of the thermometer; and according to the phenomenon that the longer the insertion length of the thermometer is, the more accurate the temperature is measured, the oblique insertion device of the thermometer is designed. It is used to ensure that the verification positions of the thermometer and the thermometer are consistent throughout the verification process and the accuracy of temperature measurement.

Among the three thermometer oblique insertion devices on the same side, the first and second thermometer oblique insertion devices are located at both ends of the stage, respectively, and the third thermometer oblique insertion device is located on the first and second thermometer oblique insertion devices the middle position.

The opening of the front end of the small U-shaped tank is equipped with a square baffle extending below the liquid level of the constant temperature water tank. The square baffle isolates the liquid level detection switch from the verification path of the electronic thermometer. When the liquid level of the verification path is not stable The square baffle keeps the monitoring liquid level of the liquid level detection switch 5 stable, and realizes the accurate detection of the liquid level height of the constant temperature water tank 1 .

The linear module includes a mounting seat, a line rail slideway, a ball screw, a line rail slider and a motor. The mounting seat is mainly composed of an upper bottom plate, a lower bottom plate and a vertical plate connecting the upper and lower bottom plates, and the mounting seat is fixed by the lower bottom plate. On the stage, the lower end of the ball screw is installed in the through hole opened in the lower base plate, the upper end of the ball screw is connected to the motor output shaft through the through hole opened in the upper base plate, and bearing sheets are embedded in the through holes of the upper and lower base plates. ;The side of the vertical plate close to the ball screw is provided with a line rail slideway, the ball screw rod is set with a line rail slider and the line rail slide block is slidably connected with the line rail slideway, and the line rail slide block is connected to the load box through the connecting rod. Connected to each other, a foam board of a certain volume is placed in the cargo-carrying square 8; the linear rail slider moves up and down along the linear rail slideway driven by the motor, and simultaneously drives the cargo-carrying square to move up and down.

The thermostatic water tank is located between two electronic thermometer transmission devices. The electronic thermometer transmission device drives the electronic thermometer to move into the thermostatic water tank from one side, and moves out of the thermostatic water tank from the other side. An industrial camera is installed through the support frame at the position where the electronic thermometer moves out of the thermostatic water tank. and photoelectric sensors.

The thermometer is connected with the multi-channel inspection instrument, the multi-channel inspection instrument is connected to the computer through the multi-channel thermometer, and the thermometer indication is transmitted to the computer through the multi-channel inspection instrument and the multi-channel thermometer.

The beneficial effects of the present utility model are:

1) The thermometer of the utility model enters the constant temperature water tank in an oblique insertion mode, which ensures that the thermometer and the electronic thermometer are at the same verification height, and satisfies the standard detection requirement that the insertion length of the thermometer is not less than 2/3 of its own length, and improves the temperature detection accuracy.

2) Using multiple thermometers to measure the temperature of the constant temperature tank temperature field, avoiding errors caused by changes in the constant temperature field environment, and improving the temperature measurement accuracy of the thermometer in the process of verifying the electronic thermometer.

3) The temperature measurement balance device of the utility model keeps the liquid level height in the constant temperature tank stable, keeps the liquid level height of the constant temperature tank at the set value, and improves the temperature measurement accuracy of the thermometer.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model device;

Figure 2 is a schematic diagram of a liquid level detection device composed of a liquid level detection switch, a square baffle, and an inverted L-shaped support frame;

Fig. 3 is the structural representation of the temperature measurement balance device;

Fig. 4 is the structural representation of the oblique insertion device of the thermometer;

Fig. 5 is the structural representation of L-shaped glass cylindrical scale rod;

6 is a top view of the utility model device;

7 is a schematic diagram of the verification route of the electronic thermometer;

FIG. 8 is a working flow chart of the device of the present invention.

In the picture: 1. Constant temperature water tank; 2. Object stage; 3. Thermometer oblique insertion device; 4. Square baffle; 5. Liquid level detection switch; 6. Inverted L-shaped support frame; 7. Linear module; 8. Load square; 9. L-shaped glass cylindrical scale bar; 10. Mounting seat; 11. Motor; 12. Bearing sheet; 13. Linear rail slideway; 14. Ball screw; 15. Linear rail slider; 16. Connecting column; 17. Support rod; 18. Card slot; 19. Bracket; 20. Thermometer; 21. Silicone tube; 22. PLC logic controller; 23. Computer; 24. Multi-channel inspection instrument; 25. Multi-channel Thermometer; 26. Industrial camera; 27. Photoelectric sensor.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail:

As shown in Figure 1, the utility model includes a constant temperature water tank 1, a stage 2, a linear module 7, a liquid level detection switch 5, a thermometer oblique insertion device 3, an L-shaped cylindrical scale bar 9, and the stage 2 is installed in a constant temperature Above the water tank 1, the linear module 7 is installed on the stage 2, and a thermometer oblique insertion device 3 is installed on the front and rear sides of the stage 2 at a total of six points on the left, middle, and right. The inverted L-shaped support frame 6 of the level detection switch 5, a square baffle 4 surrounding the liquid level detection switch 5 is installed on the stage 2, the bottom of the square baffle 4 is connected with the liquid level of the constant temperature water tank 1, and the L-shaped glass cylinder The upper part of the scale rod 9 is fixed by the inverted L-shaped support frame 6, and the bottom end of the L-shaped glass cylindrical scale rod 9 is connected with the water outlet of the constant temperature water tank 1 through the silicone tube 21, and the thermometer 20 enters the constant temperature water tank 1 in an oblique insertion manner, which satisfies the insertion of the thermometer 20. The shortest length of the water area of the constant temperature water tank 1 is to measure the temperature field distribution of the constant temperature water tank 1 in real time. The liquid level detection switch 5 controls the linear module 7 to work through the PLC programmable logic controller 22 .

As shown in Figure 2, the liquid level measuring device is composed of a liquid level detection switch 5, a square baffle 4, and an inverted L-shaped support frame 6. The upper end surface of the inverted L-shaped support frame 6 is provided with a semicircular slot, and the liquid level detection switch 5. The upper part is clamped in the semicircular slot of the suspension fixture 6, the bottom of the inverted L-shaped support frame 6 has screw holes, and it is fixed on the stage 2 by screws. The liquid level detection switch 5 is surrounded by a square baffle of a certain length. Inside 4, the bottom of the square baffle 4 is connected with the liquid level of the constant temperature water tank 1. During the verification process of the electronic thermometer, the water surface in the constant temperature water tank 1 will be unstable. The square baffle 4 can effectively keep the liquid level detection switch 5 at rest. The water surface environment can accurately detect the liquid level of the current constant temperature water tank 1.

As shown in Figure 3, the temperature measurement balance device is composed of a linear module 7 and a load box 8, wherein the linear module 7 is composed of a mounting seat 10, a linear rail slideway 13, a ball screw 14, and a linear rail slider 15. , motor 11, the bottom of the mounting seat 10 is connected with the stage 2 by screws, the right side of the mounting seat 10 is provided with a linear slide 13, the upper and lower ends of the mounting seat 10 are respectively opened with a through hole, and the bearing sheet is embedded in the through hole 12. The linear slide block 15 is sleeved on the ball screw 14. The linear slide block 15 is connected to the load box 8 through a connecting rod. A ball screw 14 is installed between the upper and lower ends of the mounting seat 10. The ball screw 14 The upper end is connected to the motor 11 . The liquid level detection switch 5 sends a signal to the PLC logic controller 22 by detecting the liquid level height of the current constant temperature water tank 1. The PLC logic controller 22 controls the rotation of the motor 11, and then the motor 11 controls the movement of the ball screw 14, through the ball screw 14 The characteristic of converting the rotary motion into linear motion, the ball screw 14 drives the linear rail slider 15 and the load-carrying grid 8 to move in two directions up and down, and a certain volume of foam board is placed in the load-carrying grid 8, thereby When the water level of the constant temperature water tank 1 drops, the temperature measurement balance device can raise the water level in the constant temperature water tank 1 to the original liquid level in time, and the length of the thermometer 20 immersed in the constant temperature water tank 1 can meet the requirements.

As shown in Figures 4 and 6, the thermometer oblique insertion device 3 is composed of a connecting column 16, a support rod 17, a slot 18, a bracket 19, and a bolt. Welded under the slot 18, the support rod 17 is rotatable in the hollow cylindrical connecting column 16 and fixed with bolts, the bottom of the bracket 19 and the upper end of the slot 18 are hingedly connected by bolts, the bracket 19 is embedded with a rubber sleeve, and the thermometer 20 Placed in bracket 19. In the process of verifying the electronic thermometer, the electronic thermometer will have a certain impact on the temperature field of the constant temperature water tank 1 from the moment it enters the constant temperature water tank 1 to the moment when it leaves the constant temperature water tank 1. Place the thermometer oblique insertion device 3 on the left, middle and right sides of the stage 2. At six o'clock, it can reflect the ambient temperature of the electronic thermometer in three states: entering the constant temperature water tank 1, in the constant temperature water tank 1, and leaving the constant temperature water tank 1.

As shown in FIG. 7 , the thermometer oblique insertion device 3 is placed at six o’clock on the left, middle and right on both sides of the stage 2, and the thermometer 20 is immersed in the water area of the constant temperature water tank 1 by oblique insertion at these six points, and is immersed in the water area of the constant temperature water tank 1 according to the electronic thermometer. Adjust the relative position of the thermometer 20 and the bracket 19 accordingly, so that the thermometer 20 and the electronic thermometer are at the same position and height, so that the temperature measured by the thermometer 20 can accurately represent the electronic thermometer at the same position and height as the thermometer 20 The ambient temperature of the height .

As shown in Figure 5, the left side of the stage 2 is fixed with an L-shaped glass cylindrical scale rod 9 through an inverted L-shaped support frame 6, and one end of the L-shaped glass cylindrical scale rod 9 is connected to the water outlet at the bottom of the constant temperature water tank 1 through a silicone tube 21, The other end of the L-shaped glass cylindrical scale bar 9 is embedded in the semi-circular slot opened on the top surface of the inverted L-shaped support frame 6; In principle, the height of the water in the L-shaped cylindrical scale bar 9 is equal to the height of the liquid level in the constant temperature water tank 1, which facilitates the observation of the liquid level in the constant temperature water tank 1.

As shown in Figure 8, the specific implementation process of the present utility model is as follows:

1) Selection of temperature measurement points

The verification path of the electronic thermometer is on both sides of the constant temperature water tank 1 , and three thermometer oblique insertion devices 3 are installed on the front and rear sides of the stage 2 . Step 1, the three thermometers 20 simultaneously collect the temperature of the temperature field. In step 2, the set collection temperature interval is consistent with the movement time sequence interval in the standard measurement method of the electronic thermometer. Step 3: Record the time when the electronic thermometer moves from the first measurement point to the second measurement point to the third measurement point and leaves the temperature field, and takes it as the standard temperature time for the end of the verification of an electronic thermometer. Step 4: In the temperature acquisition system, the measured values of the three temperature points are extracted and calculated according to the time sequence of the electronic thermometer passing through the three temperature points. .

Selection of temperature measurement points: six temperature measurement points are selected on the front and rear sides of constant temperature water tank 1, and a total of three temperature measurement points on each side are selected at the center of the electronic thermometer entering and leaving the temperature field and the center of the verification path. Install the thermometers 20 on the thermometer oblique insertion devices 3 on both sides of the thermostatic water tank 1 respectively, and adjust the angle and height so that the position and height of the thermometer 20 and the electronic thermometer immersed in the water of the thermostatic water tank 1 are consistent. The length of the thermometer 20 immersed in the water area of the constant temperature water tank 1 directly affects the accuracy of the temperature measurement. The longer the immersion length is, the closer the measured temperature is to the true value.

The following table reflects the influence of the immersion length of the thermometer on the accuracy of temperature measurement. When the immersion length of the thermometer 20 is less than 2/3 of its own length, the difference between the industrial platinum resistance and the standard platinum resistance is greater than 0.01℃, which does not meet the requirements of 1226-2009 Medical Electronics The thermometer calibration specification stipulates the uniformity of the temperature field of the constant temperature bath, so it is necessary to ensure that the length of the platinum resistance thermometer inserted is always greater than or equal to 2/3 of its own length to ensure the accuracy of the measurement.

Table 1: Experiment on the relationship between immersion length and measurement temperature of industrial platinum resistance thermometers

2) Verification of electronic thermometers

The set temperature of the constant temperature water tank 1 is 37 degrees Celsius, and the fluctuation is ±0.01 °C/10min, and the constant temperature water tank 1 is filled with water. The electronic thermometer is placed in the thermometer fixture, and the thermometer fixture enters the constant temperature water tank 1 along with the two transmission devices. At this time, the electronic thermometer begins to be verified. The thermometer 25 is finally uploaded to the computer 23, and the real-time temperature of the constant temperature water tank 1 is compared with the temperature field specification specified in the verification requirements. If the requirements are not met, the verification of the electronic thermometer will be stopped; if the requirements are met, the verification will continue.

With the operation of the transmission device, the thermometer fixture leaves the constant temperature water tank 1, and a photoelectric sensor 27 is installed at the position where the thermometer fixture leaves the constant temperature water tank 1. When the thermometer fixture is detected, a signal is sent to the PLC logic controller 22, and the PLC logic controller 22 controls the industrial The camera 26 takes a picture of the electronic thermometer and transmits it to the computer 23. The computer 23 obtains the electronic thermometer indication through OCR optical character recognition on the photo, and compares the electronic thermometer indication with the standard temperature of the thermometer. It indicates that the verified electronic thermometer is unqualified; if it meets the requirements of the verification regulations, it indicates that the verified electronic thermometer is qualified.

3) Keep the temperature measurement balance in the verification process

In the process of verifying the electronic thermometer, the liquid level in the constant temperature water tank 1 will be affected by two factors: First, in the verification environment of 37 degrees Celsius, the water in the constant temperature water tank 1 will evaporate. The second is the amount of water taken away when the electronic thermometer leaves the constant temperature water tank 1. When the liquid level in the constant temperature water tank 1 drops to a specified height, the pressurized water device composed of the linear module 7, the liquid level detection switch 5 and the load box 8 starts to work, and the liquid level detection switch 5 sends a signal to the PLC logic control. The controller 22, the PLC logic controller 22 controls the rotation of the motor 11, and then the motor 11 controls the motion of the ball screw 14, and the rotary motion is converted into a linear motion through the ball screw 14, and the ball screw 14 drives the linear rail slider 15 and the load The object square 8 moves in two directions up and down, and a certain volume of foam board is placed in the object-carrying square 8, so that when the water level of the constant temperature water tank 1 drops, the water pressure device can timely raise the water level in the constant temperature water tank 1 to The original liquid level height and the length of the thermometer 20 immersed in the constant temperature water tank 1 can meet the requirements, and at the same time ensure the accuracy of the standard temperature used for calibrating the electronic thermometer.

Claims (6)

1. A temperature field measuring and balancing device for electronic thermometer verification is characterized in that: comprising a constant temperature water tank (1), a stage (2), a thermometer oblique insertion device (3), an L-shaped cylindrical scale bar (9), A liquid level detection switch (5) and a temperature measurement balance device, a stage (2) is arranged above the constant temperature water tank (1), and three thermometer oblique insertion devices are symmetrically arranged on the front and rear sides along the axis direction of the stage (2). (3), the three thermometer oblique insertion devices (3) on the same side are arranged at equal intervals along the edge of the stage (2); The front side of the stage (2) is provided with a small U-shaped groove and a large U-shaped groove. The bottom of the liquid level detection switch (5) passes through the small U-shaped groove from top to bottom and is immersed under the liquid level of the constant temperature water tank (1). The top of the detection switch (5) is fixed on the object platform (2) through an inverted L-shaped support frame (6); the temperature measurement balance device includes a linear module (7) and an object-carrying square (8), and the linear module (7) ) is installed on the loading platform (2) through the mounting seat (10), the top surface of the loading box (8) is connected with the linear module (7) through the connecting rod, and the bottom of the loading box (8) is from top to bottom Pass through the large U-shaped groove and contact the liquid level of the constant temperature water tank (1); One of the left and right sides of the stage (2) is fixed with an L-shaped glass cylindrical scale rod (9) through an inverted L-shaped support frame (6). The water outlet at the bottom of the constant temperature water tank (1) is connected, and the other end of the L-shaped glass cylindrical scale rod (9) is embedded in a semicircular slot opened on the top surface of the inverted L-shaped support frame (6). 2. A temperature field measurement and balance device for electronic thermometer verification according to claim 1, characterized in that: each described thermometer oblique insertion device (3) is mainly composed of a connecting column (16), a support rod (17) ), a card slot (18) and a bracket (19), a cylindrical groove is formed inside the connecting column (16), a support rod (17) is sleeved in the cylindrical groove through a bearing, and a support rod is connected above the connecting column (16). A card slot (18) is fixed, the bottom of the bracket (19) and the upper end of the card slot (18) are hingedly connected, and the thermometer (20) is placed in the strip slot opened in the bracket (19); by adjusting the bracket (19) ) to adjust the height and depth of the thermometer (20) inserted into the liquid level of the constant temperature water tank (1); the verification position of the electronic thermometer is the same as that of the thermometer. 3. The temperature field measuring and balancing device for verification of an electronic thermometer according to claim 1, characterized in that: a square shape extending into the bottom of the liquid level of the constant temperature water tank (1) is installed at the front end opening of the small U-shaped groove. The baffle (4) and the square baffle (4) isolate the liquid level detection switch (5) from the verification path of the electronic thermometer. When the liquid level of the verification path is unstable, the square baffle (4) makes the liquid level detection switch (5). 5) The monitoring liquid level remains stable. 4. A temperature field measurement and balance device for electronic thermometer verification according to claim 1, characterized in that: the linear module (7) comprises a mounting seat (10), a linear rail slideway (13), a ball The screw (14), the line rail slider (15) and the motor (11), the mounting seat (10) is mainly composed of an upper bottom plate, a lower bottom plate and a vertical plate connecting the upper and lower bottom plates, and the mounting seat (10) is fixed by the lower bottom plate On the stage (2), the lower end of the ball screw (14) is installed in the through hole opened in the lower base plate, and the upper end of the ball screw (14) passes through the through hole opened in the upper base plate and the output shaft of the motor (11) Connected; a line rail slideway (13) is provided on the side of the vertical plate close to the ball screw (14), a line rail slider (15) is set on the ball screw (14), and the line rail slide block (15) and the line rail slide The rail (13) is slidably connected, and the rail slider (15) is connected to the load-carrying square (8) through a connecting rod; the rail slider (15) moves up and down along the rail slide (13) driven by the motor (11). At the same time, it drives the load box (8) to move up and down. 5. A kind of electronic thermometer verification temperature field measurement and balance device according to claim 1, is characterized in that: constant temperature water tank (1) is located between two electronic thermometer transmission devices, and the electronic thermometer transmission device drives the electronic thermometer from a Move into the constant temperature water tank (1) from one side, move out of the constant temperature water tank (1) from the other side, and install an industrial camera (26) and a photoelectric sensor (27) through a support frame at the position where the electronic thermometer moves out of the constant temperature water tank (1). 6. A temperature field measuring and balancing device for electronic thermometer verification according to claim 1, characterized in that: the thermometer (20) is connected with a multi-channel inspection instrument (24), and the multi-channel inspection instrument (24) ) is connected to the computer (23) through the multi-channel thermometer (25), and the readings of the thermometer (20) are transmitted to the computer (23) through the multi-channel inspection instrument (24) and the multi-channel thermometer (25).

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