A batch calibration device for electronic thermometers

Abstract

This invention discloses a batch calibration device for electronic thermometers. A robotic arm drives a box-grabbing mechanism to grasp a basket and place the thermometer sealing test chamber into a constant-temperature water bath. Then, a computer communicates with the thermometer sealing test chamber to send control signals to the electronic thermometers inside, thereby achieving calibration control. By setting up several constant-temperature water baths, calibration at different temperatures does not require waiting for the temperature adjustment process of the water baths, resulting in a high degree of automation and fast calibration speed. A single connection cable enables control of a batch of electronic thermometers to the control terminal, and switching between different electronic thermometers is quick. No manual supervision is required, reducing labor intensity and making it suitable for batch calibration of electronic thermometers.

Description

Technical Field

[0001] This invention belongs to the technical field of batch testing equipment for thermometer calibration, and in particular relates to a batch calibration device for electronic thermometers. Background Technology

[0002] Electronic thermometers require calibration during production. Current technology involves inserting a batch of thermometers into a frame, immersing the probes in a constant-temperature water bath, and obtaining calibration data by measuring the difference between the thermometer's displayed temperature and the actual temperature of the water bath. Each thermometer is then connected to a computer via a separate plug-and-play cable, and the data is written to its corresponding device. While this method calibrates the thermometers, it suffers from low efficiency due to the need for repeated plugging and unplugging of cables, and the elongated shape of the thermometers limits its application. If each thermometer is connected to the computer separately, the wiring becomes tangled, making it difficult to locate and identify thermometers with calibrated faults. Summary of the Invention

[0003] The present invention addresses the problems of low calibration efficiency due to the need for repeated plugging and unplugging of connecting cables during the calibration process of electronic thermometers, and the limitation of electronic thermometers to a long and narrow shape. It provides a batch calibration device for electronic thermometers to improve calibration efficiency and adapt to the calibration of different electronic thermometers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The present invention discloses a batch calibration device for electronic thermometers, comprising a robotic arm, a box-grabbing mechanism, a basket, a constant temperature water bath, a computer, and a thermometer sealing test chamber. The robotic arm is mounted on a fixed frame, and the end of the robotic arm is equipped with a box-grabbing mechanism. The basket is detachably connected to the box-grabbing mechanism. The constant temperature water bath is located below the robotic arm, the computer is located above the basket, and the thermometer sealing test chamber is located below the basket and connected to the computer. An RFID tag is mounted on the constant temperature water bath, and an RFID reader is mounted on the basket and connected to the computer.

[0006] The thermometer sealing test chamber includes a back plate, a waterproof shell, and a circuit board, with the specific positions and connections as follows: the back plate and the waterproof shell are detachably connected, and the circuit board is located within the sealed space formed by the back plate and the waterproof shell; the back plate is provided with heat dissipation fins facing the circuit board; the circuit board is provided with several connection ports facing the heat dissipation fins; the waterproof shell is provided with a PC waterproof interface, which connects to the PC port on the circuit board; the circuit board mainly includes a HUB chip, a microprocessor, a download chip, and an analog switch; the PC port connects to the HUB chip, the HUB chip connects to the microprocessor and the download chip, the download chip connects to the IN port and the OUT port, the download chip connects to the analog switch and then to the connection port, and the control terminal of the analog switch connects to the microprocessor.

[0007] The HUB chip is CoreChipe's SL2.1A chip, the download chip is SILICONLABS' CP2102-GMR chip, the analog switch is TI's TS5A3159 chip, and the microprocessor is ESPRESSIF's ESP32-D0WD.

[0008] The box-grabbing mechanism includes a double-axis cylinder that can extend and retract at both ends and a gripper. The double-axis cylinder that can extend and retract at both ends is mounted on the box-grabbing frame. The two ends of the cylinder are respectively connected to the gripper. A linear slide rail is mounted on the box-grabbing frame, and the gripper is mounted on the linear slide rail and movably connected to the linear slide rail.

[0009] The suspended basket has handles on both sides and is open on all four sides.

[0010] Several hanging baskets are provided.

[0011] A portable power source is also installed on the suspended platform.

[0012] Several constant temperature water baths are provided.

[0013] The robotic arm is an XYZ axis linear module.

[0014] The calibration method for the batch calibration device of the electronic thermometer includes the following steps:

[0015] (1) Preparation: Insert the electronic thermometer to be calibrated and the high-precision electronic thermometer into the connection port on the circuit board of the thermometer sealing test box, record the position of the connection port into which the high-precision electronic thermometer is inserted, and input the position into the computer; cover the back plate, seal the thermometer sealing test box firmly, and place it in the basket. Use the connecting cable to connect the PC waterproof interface of the thermometer sealing test box to the computer; the robotic arm moves and grabs the basket and places it into the first constant temperature water tank;

[0016] (2) Temperature adjustment of constant temperature water baths: Adjust the temperature of each constant temperature water bath to the temperature to be calibrated and keep it stable;

[0017] (3) Read the RFID tag to obtain the current calibration temperature value: By reading the RFID tag, the current calibration temperature value is obtained based on the relationship between the RFID tag information and the set calibration temperature;

[0018] (4) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence;

[0019] (5) Determine whether the current connection port is a high-precision electronic thermometer: Based on the position of the high-precision electronic thermometer inserted into the connection port recorded in step (1), and combined with the information of the current connection port, determine whether it is a high-precision electronic thermometer; if it is not a high-precision electronic thermometer, continue to determine the next connection port in turn; if the current connection port is a high-precision electronic thermometer, proceed to the next step.

[0020] (6) Determine if the high-precision electronic thermometer has reached the calibration temperature: The computer reads the actual temperature inside the thermometer sealed test chamber by connecting to the current high-precision electronic thermometer, and determines whether the actual temperature is consistent with the current calibration temperature value. If the actual temperature has not reached the calibration temperature value, return to step (4); if the temperature measured by the current high-precision electronic thermometer is consistent with the current calibration temperature value, proceed to the next step.

[0021] (7) Determine whether all high-precision electronic thermometers have reached the calibration temperature value: By recording the number of connection ports to which the high-precision electronic thermometers are plugged in in step (1), determine whether all high-precision electronic thermometers have reached the calibration temperature value; if all high-precision electronic thermometers have reached the calibration temperature value, proceed to the next step; otherwise, return to step (4).

[0022] (8) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence;

[0023] (9) Determine if the current connection port is the electronic thermometer to be calibrated: Determine if the current connection port is the electronic thermometer to be calibrated by comparing the current connection port location information with the recorded connection port location information of the high-precision electronic thermometer; if the current connection port is not the electronic thermometer to be calibrated, then determine the next connection port until the current connection port is the electronic thermometer to be calibrated, and then proceed to the next step.

[0024] (10) Calibration: The computer sends a calibration command to the electronic thermometer to be calibrated on the current connection port. The electronic thermometer to be calibrated begins calibration after receiving the calibration command.

[0025] (11) Determine if calibration is successful: When the electronic thermometer to be calibrated is completed, it returns a calibration completion signal. If the computer does not receive the calibration completion signal within a certain period of time, the computer sends a signal to the microprocessor, which controls the corresponding indicator light to indicate calibration failure.

[0026] (12) Determine if all electronic thermometer calibrations are complete: Determine if the current connection port is the last connection port? If it is not the last connection port, return to step (8); if it is the last connection port, the robotic arm grabs the basket, moves to the next constant temperature water tank, and returns to step (3);

[0027] (13) Determine whether all specified temperature values ​​have been calibrated: If not all specified temperature values ​​have been calibrated, return to step (3); The calibration process is complete when all electronic thermometers have completed all specified temperature values.

[0028] The beneficial effects obtained by this invention are:

[0029] 1. By using several constant temperature water baths, calibration can be performed at different temperatures without waiting for the heating process, resulting in short calibration time and suitability for batch calibration.

[0030] 2. Control commands are issued via computer, which avoids the need for manual plugging and unplugging of connecting cables during the calibration process. The computer controls the switching speed of different electronic thermometers, which can greatly shorten the calibration time.

[0031] 3. The sealed test chamber for thermometers effectively transfers the temperature of the constant temperature water bath to the temperature probe of the electronic thermometer, while preventing water from entering the electronic thermometer and causing damage.

[0032] 4. The thermometer sealed test chamber is suitable for the calibration of split-type thermometers, so that the shape of electronic thermometers is no longer limited to a long strip.

[0033] 5. The robotic arm can perform the transfer after the electronic thermometer inside the basket has been calibrated, resulting in a fast response time, reduced manual intervention, and lower labor intensity.

[0034] 6. The computer is mounted on the suspended platform. When the platform is submerged in the constant-temperature water bath, the computer remains above the water surface, preventing water ingress. This also reduces the wiring distance between the computer and the sealed thermometer test chamber, resulting in a more compact structure. One platform is controlled by one computer, and several platforms can be calibrated simultaneously, allowing for more thermometers to be calibrated per unit time, thus facilitating batch calibration of electronic thermometers.

[0035] 7. The computer and the thermometer sealing test chamber are connected by a connecting cable. The thermometer sealing test chamber is then connected to the electronic thermometer to be calibrated via a branch line. The connection between the computer and the thermometer sealing test chamber is simple and the connection preparation time is short.

[0036] 8. When calibration is abnormal, the indicator light can point out the electronic thermometer that has not been calibrated. Compared with the existing technology, the indicator light is simple and clear, and there is no need to search for the electronic thermometer that has not been calibrated from the complicated connection wires. The troubleshooting time is short and fast. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the XYX module structure of the present invention.

[0039] Figure 3 This is a schematic diagram of the Z-axis linear module and the box-grabbing mechanism of the present invention.

[0040] Figure 4 This is a partial enlarged view of the box-grabbing mechanism of the present invention.

[0041] Figure 5 This is a schematic diagram of the suspended basket structure of the present invention.

[0042] Figure 6 This is a schematic diagram of the layout of the constant temperature water tank of the present invention.

[0043] Figure 7 This is a schematic diagram of the thermometer sealing test chamber of the present invention placed in a constant temperature water bath.

[0044] Figure 8 This is a schematic diagram of the structure of the thermometer sealing test chamber of the present invention.

[0045] Figure 9 This is a schematic diagram of the circuit board of the thermometer sealing test box of the present invention.

[0046] Figure 10 This is a schematic diagram of the circuit structure of the thermometer sealing test chamber of the present invention.

[0047] Figure 11This is a flowchart illustrating the process of calibrating an electronic thermometer using the device of the present invention.

[0048] The diagram is labeled as follows: XYZ linear module 1, Z-axis linear module 2, gripping mechanism 3, power bank 4, computer 5, thermometer sealed test chamber 6, hanging basket 7, constant temperature water bath 8, dual-axis cylinder with telescopic extension at both ends 9, linear slide rail 10, gripper 11, positioning pin 12, proximity sensor 13, waterproof housing 601, circuit board 602, back plate 603, handle 604, OUT output waterproof interface 605, IN waterproof input interface 606, PC waterproof interface 607, heat sink 608, IN port 609, OUT port 610, PC port 611, connection port 612, indicator light 613. Detailed Implementation

[0049] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] Example 1

[0051] This embodiment is a structural example of a batch calibration device for electronic thermometers according to the present invention.

[0052] like Figures 1 to 9 As shown, the batch calibration device for electronic thermometers according to the present invention includes a robotic arm, a box-grabbing mechanism 3, a basket 7, a constant-temperature water bath 8, a computer 5, and a thermometer sealing test chamber 6. The robotic arm adopts an XYZ linear module 1, which is mounted on a fixed frame. The box-grabbing mechanism 3 is fixed at the Z-axis end, allowing for easy grabbing and releasing of the basket 7. The constant-temperature water bath 8 is located below the robotic arm, and the computer 5 is located above the basket 7. A mobile power supply 4 is also located above the basket 7, connected to the computer 5 and providing power. The thermometer sealing test chamber 6 is installed inside the basket 7 and connected to the computer 5 via a connecting cable. There are eight constant-temperature water baths 8.

[0053] The box-grabbing mechanism 3 includes a retractable dual-axis cylinder 9 and grippers 11. The retractable dual-axis cylinder 9 is mounted on the box-grabbing frame, and a linear slide rail 10 is mounted on the box-grabbing frame. The grippers 11 are connected to both ends of the retractable dual-axis cylinder 9, and the grippers 11 slide on the linear slide rail 10. The extension and retraction of the retractable dual-axis cylinder 9 causes the grippers 11 to open and close. The suspended basket 7 has handle positions that match the box-grabbing mechanism 3. The XYZ linear module 1 drives the box-grabbing mechanism 3 to the vicinity of the handle positions on the suspended basket 7. The opening and closing action of the grippers 11 enables the grabbing / releasing of the suspended basket 7. In conjunction with the movement of the XYZ linear module 1, the suspended basket 7 moves sequentially through eight constant-temperature water tanks.

[0054] The thermometer sealed test chamber 6 includes a back plate 603, a waterproof shell 601, and a circuit board 602. The specific positions and connections are as follows: The waterproof shell 601 is made of transparent material. The back plate 603 and the waterproof shell 601 are detachably connected. The circuit board 602 is located within the sealed space formed by the back plate 603 and the waterproof shell 601. The back plate 603 has heat dissipation fins 608 facing the circuit board 602. The circuit board 602 has several connection ports 612 facing the heat dissipation fins 608. After the back plate 603 and the waterproof shell 601 are fixed together, the heat dissipation fins 608 are in close contact with the temperature probes of the electronic thermometers corresponding to the connection ports 612. The waterproof shell 601 has a PC waterproof interface 607, which connects to a PC port 611 on the circuit board 602.

[0055] Circuit board 602 mainly includes a HUB chip, a microprocessor, a download chip, and an analog switch. The specific location and connection relationships are as follows: PC port 611 connects to the HUB chip; the HUB chip connects to the microprocessor and the download chip; the download chip connects to the IN and OUT ports; the download chip connects to the analog switch and then to the connection port; the control terminal of the analog switch connects to the microprocessor. An indicator light is located next to each connection port 612, controlled by the microprocessor, to indicate the calibration status. Understandably, by recording the locations where calibration is incomplete on the computer, it is possible to quickly identify electronic thermometers with calibrated errors.

[0056] The hub uses CoreChipe's SL2.1A chip, the microprocessor uses Espressif's ESP32-D0WD, the download chip uses SILICONLABS' CP2102-GMR, and the analog switch uses TI's TS5A3159.

[0057] Furthermore, the suspended platforms are all equipped with portable power banks; portable power banks can reduce the number of cables connecting the mains power from the robotic arm to the computer and the thermometer sealed test chamber, making the wiring simpler.

[0058] Furthermore, to ensure accurate gripping by the container-grabbing mechanism, a positioning pin and a proximity switch are provided. The positioning pin is located on the constant-temperature water tank, and a positioning hole is provided on the basket corresponding to the positioning pin. The positioning pin is a truncated cone, wider at the bottom than the top. The positioning pin, in conjunction with the positioning hole, allows the basket to be accurately placed in the designated position for precise gripping by the container-grabbing mechanism. The proximity switch is located on the side wall of the constant-temperature water tank. When the basket is placed in the tank, the proximity switch senses the placement and signals the presence of material.

[0059] Example 2

[0060] This embodiment is a method embodiment for calibration using the batch calibration device for electronic thermometers described in this invention. The high-precision electronic thermometer used in this embodiment is the YS-ST-AX01 from Guangxi Yingsai Digital Technology Co., Ltd. The calibration method includes the following steps:

[0061] (1) Preparation: Insert the electronic thermometer to be calibrated and the high-precision electronic thermometer into the connection port on the circuit board of the thermometer sealing test box, record the position of the connection port into which the high-precision electronic thermometer is inserted, and input the position into the computer; cover the back plate, seal the thermometer sealing test box firmly, and place it in the basket. Use the connecting cable to connect the PC waterproof interface of the thermometer sealing test box to the computer; the robotic arm moves and grabs the basket and places it into the first constant temperature water tank;

[0062] (2) Temperature adjustment of constant temperature water baths: Adjust the temperature of each constant temperature water bath to the temperature to be calibrated and keep it stable;

[0063] (3) Read the RFID tag to obtain the current calibration temperature value: By reading the RFID tag, the current calibration temperature value is obtained based on the relationship between the RFID tag information and the set calibration temperature;

[0064] (4) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence;

[0065] (5) Determine whether the current connection port is a high-precision electronic thermometer: Based on the position of the high-precision electronic thermometer inserted into the connection port recorded in step (1), and combined with the information of the current connection port, determine whether it is a high-precision electronic thermometer; if it is not a high-precision electronic thermometer, continue to determine the next connection port in turn; if the current connection port is a high-precision electronic thermometer, proceed to the next step.

[0066] (6) Determine if the high-precision electronic thermometer has reached the calibration temperature: The computer reads the actual temperature inside the thermometer sealed test chamber by connecting to the current high-precision electronic thermometer, and determines whether the actual temperature is consistent with the current calibration temperature value. If the actual temperature has not reached the calibration temperature value, return to step (4); if the temperature measured by the current high-precision electronic thermometer is consistent with the current calibration temperature value, proceed to the next step.

[0067] (7) Determine whether all high-precision electronic thermometers have reached the calibration temperature value: By recording the number of connection ports to which the high-precision electronic thermometers are plugged in in step (1), determine whether all high-precision electronic thermometers have reached the calibration temperature value; if all high-precision electronic thermometers have reached the calibration temperature value, proceed to the next step; otherwise, return to step (4).

[0068] (8) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence;

[0069] (9) Determine if the current connection port is the electronic thermometer to be calibrated: Determine if the current connection port is the electronic thermometer to be calibrated by comparing the current connection port location information with the recorded connection port location information of the high-precision electronic thermometer; if the current connection port is not the electronic thermometer to be calibrated, then determine the next connection port until the current connection port is the electronic thermometer to be calibrated, and then proceed to the next step.

[0070] (10) Calibration: The computer sends a calibration command to the electronic thermometer to be calibrated on the current connection port. The electronic thermometer to be calibrated begins calibration after receiving the calibration command.

[0071] (11) Determine if calibration is successful: When the electronic thermometer to be calibrated is completed, it returns a calibration completion signal. If the computer does not receive the calibration completion signal within 100ms, the computer sends a signal to the microprocessor, which controls the corresponding indicator light to indicate calibration failure.

[0072] (12) Determine if all electronic thermometer calibrations are complete: Determine if the current connection port is the last connection port? If it is not the last connection port, return to step (8); if it is the last connection port, the robotic arm grabs the basket, moves to the next constant temperature water tank, and returns to step (3);

[0073] (13) Determine whether all specified temperature values ​​have been calibrated: If not all specified temperature values ​​have been calibrated, return to step (3); The calibration process is complete when all electronic thermometers have completed all specified temperature values.

[0074] It should be noted that a single constant temperature water bath can also be used to complete the batch calibration process, but each time the temperature needs to be raised before temperature calibration can be performed, and the heating process takes a relatively long time.

[0075] It is worth noting that the present invention obtains the actual temperature inside the thermometer sealed test chamber directly by inserting a high-precision electronic thermometer into the connection port, or by setting up an independent circuit to read the temperature of the high-precision electronic thermometer; or by immersing the thermometer sealed test chamber in a constant temperature water bath for a certain period of time to make the temperature inside the thermometer sealed test chamber consistent with the temperature of the constant temperature water bath before calibration. These improvements should all be regarded as replacing conventional methods.

[0076] The working principle is as follows:

[0077] This invention discloses a batch calibration device for electronic thermometers. A robotic arm drives a box-grabbing mechanism to grasp a basket, placing the sealed test chambers of electronic thermometers into a constant-temperature water bath. Then, a computer communicates with the sealed test chambers, sending control signals to the electronic thermometers inside, thereby achieving calibration control. The robotic arm transfers the sealed test chambers between constant-temperature water baths at different temperatures, allowing calibration to be completed at different temperatures in a single heating process, minimizing waiting time. The connection between the computer and each electronic thermometer requires only a single cable as a bus, with the computer controlling the calibration and switching between different thermometers, resulting in a fast switching process.

Claims

1. A batch calibration device for electronic thermometers, characterized in that, The system includes a robotic arm, a box-grabbing mechanism, a suspended basket, a constant-temperature water bath, a computer, and a thermometer sealing test chamber. The robotic arm is mounted on a fixed frame, and the end of the robotic arm is equipped with a box-grabbing mechanism. The suspended basket is detachably connected to the box-grabbing mechanism. The constant-temperature water bath is located below the robotic arm, the computer is located above the suspended basket, and the thermometer sealing test chamber is located below the suspended basket and is connected to the computer. An RFID tag is installed on the constant-temperature water bath, and an RFID reader is installed on the suspended basket and is connected to the computer. The thermometer sealing test chamber includes a back plate, a waterproof shell, and a circuit board, with the specific positions and connections as follows: the back plate and the waterproof shell are detachably connected, and the circuit board is placed within the sealed space formed by the back plate and the waterproof shell; the back plate is provided with heat dissipation fins facing the circuit board; the circuit board is provided with several connection ports facing the heat dissipation fins; the waterproof shell is provided with a PC waterproof interface, which is connected to the PC port on the circuit board; the circuit board mainly includes a HUB chip, a microprocessor, a download chip, and an analog switch; the PC port is connected to the HUB chip, the HUB chip is connected to the microprocessor and the download chip, the download chip is connected to the IN port and the OUT port, the download chip is connected to the analog switch and then connected to the connection port, and the control terminal of the analog switch is connected to the microprocessor; The box-grabbing mechanism includes a double-axis cylinder that can extend and retract at both ends and a gripper. The double-axis cylinder that can extend and retract at both ends is mounted on the box-grabbing frame. The two ends of the cylinder are respectively connected to the gripper. A linear slide rail is mounted on the box-grabbing frame, and the gripper is mounted on the linear slide rail and movably connected to the linear slide rail.

2. The batch calibration device for electronic thermometers according to claim 1, characterized in that, The hub chip is CoreChipe's SL2.1A chip, the download chip is SILICON LABS's CP2102-GMR chip, the analog switch is TI's TS5A3159 chip, and the microprocessor is ESPRESSIF's ESP32-D0WD.

3. The batch calibration device for electronic thermometers according to claim 1, characterized in that, The suspended basket has handles on both sides and is open on all four sides.

4. The batch calibration device for electronic thermometers according to claim 1, characterized in that, Several hanging baskets are provided.

5. The batch calibration device for electronic thermometers according to claim 1, characterized in that, A portable power source is also installed on the suspended platform.

6. The batch calibration device for electronic thermometers according to claim 1, characterized in that, Several constant temperature water baths are provided.

7. The batch calibration device for electronic thermometers according to claim 1, characterized in that, The robotic arm is an XYZ axis linear module.

8. A calibration method for a batch calibration device for an electronic thermometer as described in claim 1, characterized in that, Includes the following steps: (1) Preparation: Insert the electronic thermometer to be calibrated and the high-precision electronic thermometer into the connection port on the circuit board of the thermometer sealing test box, record the position of the high-precision electronic thermometer in the connection port, and input the position into the computer; cover the back plate, seal the thermometer sealing test box firmly, put it into the basket, and use the connecting cable to connect the PC waterproof interface of the thermometer sealing test box to the computer; the robotic arm moves and grabs the basket and puts it into the first constant temperature water tank; (2) Temperature adjustment of constant temperature water baths: Adjust the temperature of each constant temperature water bath to the temperature to be calibrated and keep it stable; (3) Read the RFID tag to obtain the current calibration temperature value: By reading the RFID tag, the current calibration temperature value is obtained according to the relationship between the RFID tag information and the set calibration temperature; (4) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence; (5) Determine whether the current connection port is a high-precision electronic thermometer: Based on the position of the high-precision electronic thermometer inserted into the connection port recorded in step (1), and combined with the information of the current connection port, determine whether it is a high-precision electronic thermometer; If the current connection port is not a high-precision electronic thermometer, continue to check the next connection port in sequence; if the current connection port is a high-precision electronic thermometer, proceed to the next step. (6) Determine whether the high-precision electronic thermometer has reached the calibration temperature: The computer reads the actual temperature inside the thermometer sealed test chamber by connecting to the current high-precision electronic thermometer, and determines whether the actual temperature is consistent with the current calibration temperature value. If the actual temperature has not reached the calibration temperature value, return to step (4); if the temperature measured by the current high-precision electronic thermometer is consistent with the current calibration temperature value, proceed to the next step. (7) Determine whether all high-precision electronic thermometers have reached the calibration temperature value: Record the number of connection ports to which the high-precision electronic thermometers are plugged in in step (1) to determine whether all high-precision electronic thermometers have reached the calibration temperature value; when all high-precision electronic thermometers have reached the calibration temperature value, proceed to the next step. Otherwise, return to step (4); (8) Poll all connection ports: Obtain the electronic thermometer information on the connection port by turning on the analog switch corresponding to each connection port in sequence; (9) Determine if the current connection port is the electronic thermometer to be calibrated: Determine if the current connection port is the electronic thermometer to be calibrated by comparing the current connection port location information with the recorded connection port location information of the high-precision electronic thermometer; if the current connection port is not the electronic thermometer to be calibrated, then determine the next connection port until the current connection port is the electronic thermometer to be calibrated, and then proceed to the next step. (10) Calibration: The computer sends a calibration command to the electronic thermometer to be calibrated on the current connection port. The electronic thermometer to be calibrated starts calibration after receiving the calibration command. (11) Determine if calibration is successful: When the electronic thermometer to be calibrated is completed, it returns a calibration completion signal. If the computer does not receive the calibration completion signal within a certain period of time, the computer sends a signal to the microprocessor, which controls the corresponding indicator light to indicate calibration failure. (12) Determine whether all electronic thermometer calibrations have been completed: Determine whether the current connection port is the last connection port. If it is not the last connection port, return to step (8); if it is the last connection port, the robotic arm grabs the basket, moves to the next constant temperature water tank, and returns to step (3). (13) Determine whether all specified temperature values ​​have been calibrated: If not all specified temperature values ​​have been calibrated, return to step (3); The calibration process is complete when all electronic thermometers have completed all specified temperature values.

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