Electronic thermometer calibration box

Abstract

The application discloses an electronic thermometer calibration box, which comprises a back plate, a circuit board and a waterproof shell. The inner side of the back plate is provided with heat dissipation fins, the circuit board is provided with a plurality of connecting ports, the waterproof shell is provided with an OUT waterproof output interface, an IN waterproof input interface and a PC waterproof interface, the interfaces on the waterproof shell are connected with the ports on the circuit board, the PC waterproof interface is connected with a computer to realize communication between the computer and the circuit board, and the electronic thermometer calibration process is automatically controlled. In the calibration process, the electronic thermometer does not directly contact with water, and can be cascaded. The cascading process is simple, and the electronic thermometer can be calibrated in batches in a short time. The operation is simple, and the calibration efficiency is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of temperature calibration devices for electronic thermometers, and specifically relates to an electronic thermometer calibration box. BACKGROUND

[0002] Electronic thermometers need to be calibrated before being put into the market, and in the calibration process, the electronic thermometers are generally put into a plug-in board in batches, and then are immersed in a constant-temperature water tank for calibration. Although this method is a batch immersion in the water tank for temperature calibration, the calibration process needs to be manually connected one by one to communicate, and one-to-one calibration or operation is time-consuming and laborious, and the efficiency is low. The calibration process takes a long time, and meanwhile, the electronic thermometer is not isolated from water, which easily leads to the electronic thermometer falling into the water tank and causing water to enter the electronic thermometer. In addition, waterproof treatment of the electronic thermometer leads to high cost of the electronic thermometer. SUMMARY

[0003] The application needs to solve the technical problems of manual operation, long calibration process time and low calibration efficiency during calibration of the electronic thermometer, and provides an electronic thermometer calibration box which can reduce manual operation, shorten the batch calibration process time and improve the calibration efficiency.

[0004] To achieve the above-mentioned purposes, the technical scheme of the application is as follows:

[0005] The electronic thermometer calibration box comprises a back plate, a waterproof shell and a circuit board, and the specific positions and connection relationships are as follows: the inner side of the back plate is provided with heat dissipation fins, the circuit board is provided with a plurality of connection ports, the connection ports on the circuit board face the heat dissipation fins, the waterproof shell is provided with an OUT output waterproof interface, an IN waterproof input interface and a PC waterproof interface, the PC waterproof interface is connected to the PC port on the circuit board, the interfaces on the waterproof shell are connected to the connection ports on the circuit board, and the circuit board is arranged in the sealed space formed by the back plate and the waterproof shell.

[0006] The back plate and the waterproof shell are detachably connected.

[0007] The back plate is made of aluminum alloy.

[0008] The circuit board mainly comprises a HUB concentrator chip, a microprocessor, a download chip and an analog switch, the PC port is connected to the HUB concentrator chip, the HUB concentrator 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 connected to the connection port, and the control end of the analog switch is connected to the microprocessor.

[0009] The HUB hub chip is a SL2.1A chip of CoreChipe (and Xirlink).

[0010] The download chip is a CP2102-GMR chip of SILICON LABS (Chip Science).

[0011] The analog switch is a TS5A3159 chip of TI (Texas Instruments).

[0012] The microprocessor is an ESP32-D0WD chip of ESPRESSIF (Lew Xin).

[0013] The waterproof shell is provided with a handle, and the handle and the PC waterproof interface are located on the same side of the waterproof shell.

[0014] The calibration method of the electronic thermometer calibration box comprises the following steps:

[0015] (1) Insert the electronic thermometer into the connection port of the circuit board: insert the electronic thermometer into the connection port of the circuit board, then connect the IN port and the OUT port of the adjacent circuit board using a connecting line for cascading, connect the IN port of the first circuit board after cascading to the PC waterproof interface of the electronic thermometer calibration box, connect the OUT port of the last circuit board to the OUT output waterproof interface of the waterproof shell, after connection, waterproof treatment is performed, and then the back plate is fixed to the waterproof shell;

[0016] (2) Cascade the electronic thermometer calibration box: connect the electronic thermometer calibration box in sequence using a connecting line, connect the PC waterproof interface of the first electronic thermometer calibration box to the PC end, connect the IN waterproof input interface of the second electronic thermometer calibration box to the OUT waterproof output interface of the first electronic thermometer calibration box, and connect the IN waterproof input interface of the Nth electronic thermometer calibration box to the OUT waterproof output interface of the N-1 electronic thermometer calibration box;

[0017] (3) Immersing the connected electronic thermometer calibration box into a constant-temperature water tank to make the heat dissipation fins fully conduct heat;

[0018] (4) The PC end sends a command to disconnect all analog switches, and the microprocessor disconnects all connections between the PC end and the electronic thermometer.

[0019] (5) PC end sends a command to connect to the first connection port, the corresponding microprocessor opens the analog switch corresponding to the first connection port, so that the PC end is connected to the electronic thermometer corresponding to the first connection port, and then the microprocessor returns the PC end ready, and then the PC end sends a start calibration command to the corresponding electronic thermometer, and the corresponding electronic thermometer starts calibration after receiving the start calibration command. After the calibration of the electronic thermometer corresponding to the first connection port is completed, a calibration completion signal is returned, the PC end receives the calibration completion, sends a turn-off signal to the corresponding microprocessor, and the microprocessor turns off the analog switch corresponding to the first connection port, and the indicator lamp corresponding to the first connection port indicates that the calibration is completed. The PC end sends an instruction to open the second analog switch to the microprocessor corresponding to the second connection port, and then the PC end sends a start calibration command to the second electronic thermometer. After the calibration of the second electronic thermometer is completed, a calibration completion signal is returned, and the PC end receives the calibration completion and sends a turn-off signal to the corresponding microprocessor. The microprocessor turns off the analog switch corresponding to the second connection port, and the indicator lamp corresponding to the second connection port indicates that the calibration is completed. Calibration is performed one by one until all the electronic thermometers are calibrated.

[0020] The application has the following beneficial effects:

[0021] 1. The electronic thermometer calibration box can realize manual saving, convenient use, reduce personnel participation, and realize flexible production capacity adaptation according to production capacity demand.

[0022] 2. The electronic thermometer calibration box can be flexibly cascaded or split according to the production capacity, so as to flexibly adapt to products with different production capacity demands. The circuit boards in the electronic thermometer calibration box can be split, or the electronic thermometer calibration boxes can be directly cascaded or split. Workers only need to install the equipment to be calibrated according to the production capacity demand once, cover the back plate, connect the computer and the cascaded electronic thermometer calibration box with wire, and then put the electronic thermometer calibration box into water for corresponding calibration test, and wait for the test to be completed.

[0023] 3. The manpower on the assembly line is saved, the cumbersome operation steps are reduced, and the production efficiency is improved.

[0024] 4. The connection line from the control line to the electronic thermometer is less, only one connection line is needed to realize the connection of all the electronic thermometers, the connection time is reduced, the connection and disconnection process is simple, and the convenience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an overall explosion schematic view of the electronic thermometer calibration box.

[0026] Figure 2 The schematic diagram of the circuit board of the electronic thermometer calibration box of the present application.

[0027] Figure 3 The work flow chart of the circuit board of the electronic thermometer calibration box of the present application.

[0028] Figure 4 The work flow chart of the electronic thermometer calibration box of the present application.

[0029] Figure 5 The circuit structure schematic diagram of the circuit board of the electronic thermometer calibration box of the present application.

[0030] Figure 6 The circuit structure schematic diagram of the assembly cascade of the electronic thermometer calibration box of the present application.

[0031] Figure 7 The assembly cascade schematic diagram of the electronic thermometer calibration box of the present application.

[0032] In the figure, the mark is waterproof shell 1, circuit board 2, back plate 3, handle 4, OUT output waterproof interface 5, IN waterproof input interface 6, PC waterproof interface 7, heat dissipation fin 8, IN port 9, OUT port 10, PC port 11, connection port 12, indicator light 13. DETAILED DESCRIPTION

[0033] The present application will be described below in conjunction with the drawings.

[0034] Example 1

[0035] As shown in the figure, the present embodiment is an example of the electronic thermometer calibration box of the present application. Figure 1

[0036] The electronic thermometer calibration box is composed of back plate 3, waterproof shell 1, circuit board 2 and handle 4. The handle 4 is arranged on one side of the waterproof shell 1, the back plate 3 is buckled on the waterproof shell 1, the back plate 3 can be removed from the waterproof shell 1, and the back plate 3 needs to be waterproofed when buckled on the waterproof shell 1. The circuit board 2 is arranged in the cavity formed by the waterproof shell 1 and the back plate 3.

[0037] The handle 4 side of the waterproof shell 1 is provided with three waterproof interfaces, which are PC waterproof interface 7 connected with computer, IN waterproof input interface 6 connected with line input, and OUT waterproof interface 5 connected with line output. These interfaces are used for convenient wiring for cascade use.

[0038] ​The back plate 3 is made of aluminum alloy material, and the side of the back plate 3 facing the waterproof shell 1 is provided with heat dissipation fins 8. Each heat dissipation fin 8 corresponds to a connecting port 12 of the circuit board. When the electronic clinical thermometer is inserted into the connecting port, the heat dissipation fin 8 can be attached to the temperature probe of the electronic clinical thermometer to be tested, so that the temperature inside the electronic clinical thermometer calibration box can be quickly and stably consistent with the temperature of the constant temperature water tank. Since the electronic clinical thermometer calibration box is immersed in water, the specific heat capacity of water is large, and the temperature fluctuation of the liquid is relatively small, so that the temperature introduced by the aluminum alloy back plate is stable, and the calibration of the equipment is facilitated. The back plate 3 and the waterproof shell 1 are sealed to form an internal waterproof space, so that the electronic clinical thermometer will not come into contact with water. The handle is used to facilitate the movement of the electronic clinical thermometer calibration box.

[0039] The circuit board is provided with an IN port 9, an OUT port 10 and a PC port 11. The IN port 9, the OUT port 10 and the PC port 11 of the circuit board are connected with the IN waterproof input interface 6, the OUT waterproof output interface 5 and the PC waterproof interface 7 respectively. The electronic clinical thermometer calibration box can also be provided with more than one circuit board. The circuit boards can be connected in series by connecting the OUT port 10 of one circuit board with the IN port 9 of the next circuit board. The PC port 11 of the first circuit board is connected with the PC waterproof interface 7 of the waterproof shell, the IN port 9 is connected with the IN waterproof input interface 6 of the waterproof shell, and the OUT port 10 of the last circuit board is connected with the OUT port 5 of the waterproof shell. The connection between the circuit boards in the electronic clinical thermometer calibration box is called cascade connection of the circuit boards. The circuit board is provided with a connecting port 12, and an indicator light 13 is arranged beside each connecting port 12. The calibration state of the electronic clinical thermometer corresponding to the connecting port can be clearly known through the indicator light 13.

[0040] The circuit structure of the circuit board is as shown in Figure 5As shown, the PC port 11 is connected to the HUB chip, the HUB chip is connected to the microprocessor, the microprocessor controls the on-off of the analog switch and the indicator light after receiving the instruction. The HUB chip is also connected to the download chip, the download chip is connected to the IN port and the OUT port, and the download chip is connected to each connection port through the analog switch. When the PC port 11 is connected to the PC waterproof interface 7 and connected to the PC end, the HUB chip receives the instruction of the PC end, the microprocessor opens the corresponding analog switch according to the instruction, so that the electronic clinical thermometer on the connection port 12 is connected to the PC end, and then the PC end connects the download chip through the HUB chip and connects to the electronic clinical thermometer. Then the PC end sends an instruction to the electronic clinical thermometer on the connection port 12, and the electronic clinical thermometer can start temperature calibration. After the electronic clinical thermometer is calibrated, a calibration completion signal is returned to the PC end, and the PC end sends an instruction to the microprocessor according to the calibration completion signal, and the microprocessor controls the indicator light of the connection port 12 corresponding to the instruction, so that the indicator light indicates that the calibration is completed, and the analog switch is turned off. The temperature calibration process of the electronic clinical thermometer connected by the next connection port is carried out, and the calibration is carried out one by one until all the electronic clinical thermometers are calibrated.

[0041] Embodiment 2

[0042] The embodiment is an embodiment of the calibration method of the electronic clinical thermometer calibration box according to the application, comprising the following steps:

[0043] (1) inserting the electronic clinical thermometer into the connection port of the circuit board: inserting the electronic clinical thermometer into the connection port 12 of the circuit board 2, then connecting the IN port 9 and the OUT port 10 of the adjacent circuit board 2 in cascade by using the connecting line, connecting the IN port 9 of the first circuit board after cascade to the PC waterproof interface 7 of the electronic clinical thermometer calibration box, connecting the OUT port 10 of the last circuit board to the OUT output waterproof interface 5 of the waterproof shell, after connecting, carrying out waterproof treatment, and then fixing the back plate 3 to the waterproof shell 1;

[0044] (2) cascading the electronic clinical thermometer calibration box: connecting the adjacent electronic clinical thermometer calibration boxes in turn by using the connecting line, connecting the PC waterproof interface 7 of the first electronic clinical thermometer calibration box to the PC end, connecting the IN waterproof input interface 6 of the second electronic clinical thermometer calibration box to the OUT waterproof interface 5 of the first electronic clinical thermometer calibration box, and connecting the IN waterproof input interface 6 of the Nth electronic clinical thermometer calibration box to the OUT waterproof interface 5 of the N-1 electronic clinical thermometer calibration box;

[0045] (3) The connected electronic thermometer calibration box is immersed in the constant temperature water tank, so that the heat dissipation fins 8 are fully heat-conducting; the heat dissipation fins 8 can be fully heat-conducting in the form of lengthening the soaking time, or a thermometer can be arranged on the heat dissipation fins 8, and the reading of the thermometer is used for judgment. The best way is to insert the calibrated electronic thermometer into the connection port, and compare the value of the calibrated electronic thermometer with the temperature of the constant temperature water tank to judge. In this embodiment, YS-ST-AX01 of Guangxi Yingsai Digital Technology Co., Ltd. is used to read the temperature of the heat dissipation fins 8.

[0046] (4) The PC end sends an instruction to disconnect all analog switches, and the microprocessor disconnects all connections between the PC end and the electronic thermometers.

[0047] (5) The PC end sends an instruction to connect to the first connection port, the corresponding microprocessor opens the analog switch corresponding to the first connection port, so that the PC end is connected to the electronic thermometer corresponding to the first connection port, and then the microprocessor returns to the PC end ready, and then the PC end sends a start calibration instruction to the corresponding electronic thermometer, and the corresponding electronic thermometer starts calibration after receiving the start calibration instruction. After the calibration of the electronic thermometer corresponding to the first connection port is completed, a calibration completion signal is returned, and the PC end receives the calibration completion and sends a shutdown signal to the corresponding microprocessor, and the microprocessor shuts down the analog switch corresponding to the first connection port, and the indicator lamp corresponding to the first connection port indicates that the calibration is completed. The PC end sends an instruction to the microprocessor corresponding to the second connection port to open the second analog switch, and then the PC end sends a start calibration instruction to the second electronic thermometer, and the second electronic thermometer returns a calibration completion signal after the calibration is completed. After the PC end receives the calibration completion, the corresponding microprocessor is sent to shut down the analog switch corresponding to the second connection port, and the indicator lamp corresponding to the second connection port indicates that the calibration is completed. Calibration is carried out one by one until all the electronic thermometers are calibrated.

[0048] When the PC end repeatedly receives no calibration completion signal for 10 times, the PC end sends an instruction to the corresponding microprocessor, the corresponding microprocessor disconnects the corresponding analog switch, and the indicator lamp indicates that the calibration is not completed.

[0049] The specific working process is shown in Figure 3 、 Figure 4 .

[0050] The working principle is as follows:

[0051] When the circuit board is cascaded, the instruction from the PC end is received by the IN port, the microprocessor receives the instruction from the PC end, opens the corresponding analog switch, connects the electronic thermometer on the corresponding connection port with the PC end, sends the start temperature calibration instruction from the PC end, returns a calibration completion signal to the PC end after the electronic thermometer calibration is completed, sends the instruction to the microprocessor according to the calibration completion signal, controls the corresponding indicator lamp of the connection port 12 by the microprocessor, makes the indicator lamp indicate the calibration completion, and turns off the analog switch, calibrates the electronic thermometer connected by the next connection port, and calibrates one by one until all the electronic thermometers are calibrated.

[0052] The cascade working principle between the electronic thermometer calibration boxes is similar to the cascade of the circuit board, as long as the IN waterproof input interface 6 of the electronic thermometer calibration box is connected to the OUT waterproof output interface 5 of another electronic thermometer calibration box, the cascade between the electronic thermometer calibration boxes can be realized. The structure principle is shown in Figure 6 The connected electronic thermometer calibration box is shown in Figure 7 .

[0053] The main components on the circuit board adopt the manufacturers and specifications shown in Table 1.

[0054] Table 1

[0055]

[0056]

Claims

1. A calibration method of an electronic thermometer calibration box, characterized by, The electronic thermometer calibration box comprises a back plate, a waterproof shell and a circuit board, and the specific position and connection relationship are as follows: the inner side of the back plate is provided with a heat dissipation fin, a plurality of connection ports are arranged on the circuit board, the connection ports on the circuit board face the heat dissipation fin, the waterproof shell is provided with an OUT output waterproof interface, an IN waterproof input interface and a PC waterproof interface, the PC waterproof interface is connected with the PC port on the circuit board, the OUT output waterproof interface is connected with the OUT port on the circuit board, and the IN waterproof input interface is connected with the IN port on the circuit board; and the circuit board is arranged in the closed space formed by the back plate and the waterproof shell. The circuit board comprises a HUB hub chip, a microprocessor, a download chip and an analog switch, the PC port is connected to the HUB hub chip, the HUB hub chip is connected with 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 connected with the connection port, and the control end of the analog switch is connected to the microprocessor. The calibration method is as follows: (1) inserting the electronic thermometer into the connection port of the circuit board: inserting the electronic thermometer into the connection port of the circuit board, then connecting the IN port and the OUT port of the adjacent circuit boards by using the connecting line for cascade connection, connecting the IN port of the first circuit board after cascade connection to the PC waterproof interface of the electronic thermometer calibration box, connecting the OUT port of the last circuit board to the OUT output waterproof interface of the waterproof shell, carrying out waterproof treatment after the connection is completed, and then fixing the back plate to the waterproof shell; (2) cascading the electronic thermometer calibration box: connecting the electronic thermometer calibration boxes in sequence by using the connecting line, connecting the PC waterproof interface of the first electronic thermometer calibration box to the PC end, connecting the IN waterproof input interface of the second electronic thermometer calibration box to the OUT output waterproof interface of the first electronic thermometer calibration box, and connecting the IN waterproof input interface of the Nth electronic thermometer calibration box to the OUT output waterproof interface of the N-1th electronic thermometer calibration box; (3) immersing the connected electronic thermometer calibration box into the constant-temperature water tank to make the heat dissipation fin fully dissipate heat; (4) the PC end sends a command to disconnect all the analog switches, and the microprocessor disconnects all the connections between the PC end and the electronic thermometer. (5) PC end sends a command to connect to the first connection port, the corresponding microprocessor opens the analog switch corresponding to the first connection port, so that the PC end is connected to the electronic thermometer corresponding to the first connection port, and then the microprocessor returns the PC end ready, and then the PC end sends a start calibration command to the corresponding electronic thermometer, the corresponding electronic thermometer starts calibration after receiving the start calibration command, the electronic thermometer corresponding to the first connection port returns a calibration completion signal after calibration, the PC end sends a shutdown signal to the corresponding microprocessor after receiving the calibration completion, and the microprocessor turns off the analog switch corresponding to the first connection port, and the indicator lamp corresponding to the first connection port indicates that the calibration is completed; the PC end sends an instruction to open the second analog switch to the microprocessor corresponding to the second connection port, and then the PC end sends a start calibration command to the second electronic thermometer, the second electronic thermometer returns a calibration completion signal after calibration, and the PC end sends a shutdown signal to the corresponding microprocessor after receiving the calibration completion, and the microprocessor turns off the analog switch corresponding to the second connection port, and the indicator lamp corresponding to the second connection port indicates that the calibration is completed; calibration is performed one by one until all the electronic thermometers are calibrated.

2. The calibration method of the electronic thermometer calibration box according to claim 1, characterized in that, The back plate is detachably connected with the waterproof shell.

3. The calibration method of the calibration box for the electronic thermometer according to claim 1, wherein, The back plate is made of aluminum alloy.

4. The calibration method of the calibration box for the electronic thermometer according to claim 1, wherein, The HUB concentrator chip is a SL2.1A chip of CoreChipe.

5. The calibration method of the calibration box for the electronic thermometer according to claim 1, wherein, The download chip is a CP2102-GMR chip of SILICONLABS.

6. The calibration method of the electronic thermometer calibration box according to claim 1, wherein, The analog switch is a TS5A3159 chip of TI.

7. The calibration method of the calibration box for the electronic thermometer according to claim 1, wherein, The microprocessor is an ESP32-D0WD of ESPRESSIF.

8. The calibration method of the calibration box for the electronic thermometer according to claim 1, wherein, A handle is arranged on the waterproof shell, and the handle and the PC waterproof interface are located on the same side of the waterproof shell.

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