Electronic thermometer

Abstract

The invention belongs to the technical field of thermometers, and particularly relates to an electronic thermometer which mainly structurally comprises a shell, a temperature sensing metal sheet arranged outside the shell, a battery, a circuit board and a temperature sensor connected with the circuit board, the battery and the circuit board are arranged inside the shell and connected with each other, and the electronic thermometer has the functions of temperature monitoring, temperature prediction, wireless communication, automatic startup and shutdown and the like. The temperature can be continuously monitored, and the temperature value is transmitted to the handheld terminal device to be checked in a wireless communication mode, so that the use is convenient; in use, in order to prevent the electric quantity of the battery from being rapidly exhausted, the electronic thermometer can be automatically turned off after being placed in the storage box, and can be automatically turned on after being taken out of the storage box, thereby being environment-friendly; the infant body temperature monitoring device is simple in structure, exquisite, small and exquisite, convenient to carry and attractive in appearance, the contradictive emotion of infants can be effectively avoided, body temperature data can be checked in real time through the handheld terminal device, and the labor intensity of taking care of infants at night, old people and patients who cannot take care of themselves is greatly reduced.

Description

Technical Field:

[0001] The present invention belongs to the technical field of thermometers, and particularly relates to an electronic thermometer which is pasted under the armpit, can continuously monitor body temperature, and transmits the body temperature data to a handheld terminal device by means of wireless transmission. Background Art:

[0002] The electronic thermometers for human body in the prior art mainly include the mercury thermometer imitation mode and the infrared thermometer gun mode. For example, an electronic thermometer disclosed in Chinese Patent No. 202411949826.2 includes a main body and a probe. The probe is hollow, and a heating wire and a temperature sensor are arranged inside the probe. The heating wire is arranged in a spiral shape, and the temperature sensor is arranged inside the spiral cavity of the heating wire. Both the temperature sensor and the power supply module of the heating wire are electrically connected to the control module. The electronic thermometer further includes a coil holder that is cylindrical and has heat conduction performance. The heating wire is arranged in a spiral shape on the coil holder. A receiving groove is arranged at one end of the coil holder close to the main body, and the temperature sensor is located in the receiving groove. The probe has a cylindrical structure with one end closed. Ring-shaped flanges are arranged at both ends of the coil holder, and the outer diameter of the ring-shaped flange matches the inner diameter of the probe. The power supply module is arranged inside the main body. An avoidance opening is formed on the ring-shaped flange close to the main body, and the heating lead of the heating wire passes through the avoidance opening and is connected to the power supply module. The size of the avoidance opening is larger than the size of the heating lead of the heating wire. The inside of the probe is filled with epoxy resin glue. The temperature sensor is located on the axis of the spiral cavity of the heating wire, and the spiral cavity of the heating wire is coaxially arranged with the probe. The end of the probe away from the main body is provided with a rounded corner. A control module and a first battery for supplying power to the control module and the temperature sensor are arranged inside the main body. An opening and closing switch for controlling the power supply of the first battery is arranged on the control module. A through hole is arranged on the main body corresponding to the opening and closing switch, and the opening and closing switch extends out of the through hole. The power supply module includes a second battery and a control switch. The second battery is electrically connected to the heating wire through the control switch, and the control switch is electrically connected to the control module. A display screen for displaying temperature data is arranged on the control module, and a window is arranged on the main body corresponding to the position of the display screen.A miniature portable infrared thermometer disclosed in Chinese Patent No. 202411793287.8, comprising a cylindrical housing. An accommodation groove is formed on the end face of the housing, and a cover body capable of sealing the accommodation groove is arranged on the housing. A detection structure for detecting human body temperature, a digital display structure for displaying the detected human body temperature, and a power supply structure for supplying power to the detection structure and the digital display structure are arranged in the housing. The detection structure includes a first PCB board arranged in the accommodation groove and a measurement button arranged on the housing. A sensor for detecting human body temperature is arranged on one side of the first PCB board along the thickness direction. Through holes through which infrared rays can pass are formed on the outer circumferential surface of the housing. The measurement button is used to control the sensor to perform measurement. A support structure is arranged on the housing, and fixing holes are formed on the outer circumferential surface of the support structure. The support structure includes an operation board passing through the fixing holes. An operation groove is formed on the side of the operation board away from the accommodation groove. An operation block passes through the operation groove. A limiting component for restricting the movement of the operation block is arranged between the operation block and the operation board. A positioning component for restricting the movement of the operation board is arranged on the housing. A chute in the shape of a dovetail groove is formed on the inner wall of the accommodation groove, and the length of the chute is consistent with the axis of the accommodation groove. The positioning component includes a slider slidably arranged in the chute. An operation hole for inserting the slider is formed on the end face of the operation board facing the slider. A sliding hole is formed on the bottom wall of the chute. A movable rod is arranged in the sliding hole. One end of the movable rod is connected to the slider. The through hole is communicated with the chute, and the slider can block the through hole. An operation hole communicating with the operation groove is formed on the side of the operation board facing the slider. A groove is formed on the side of the operation block facing the bottom wall of the operation groove, and the groove penetrates through the operation block towards the operation hole. A guiding groove is formed on the inner wall of the operation hole away from the bottom wall of the operation groove. A rope passes through the guiding groove. One end of the rope is connected to the bottom wall of the groove, and the other end of the rope is connected to the slider. There are two groups of support structures, and the two groups of support structures are symmetrically distributed with respect to the axis of the through hole. A storage groove is formed on the end face of the slider away from the operation board, and a magnet is arranged in the storage groove. The two magnets can be magnetically attracted to each other. An installation groove is formed on the side of the operation block. The positioning component includes a clamping block and a spring arranged in the installation groove. The spring is in a compressed state. One end of the spring abuts against the bottom wall of the installation groove, and the other end of the spring abuts against the clamping block. A clamping groove for inserting the clamping block is formed on the bottom wall of the operation groove. An operating member for driving the clamping block to disengage from the clamping groove is arranged on the operation board. A jack is formed on the bottom wall of the operation groove. The operating member includes a push rod passing through the jack and a push block arranged in the operation groove. One end of the push rod is connected to the push block. A visual hole communicating with the accommodation groove is formed on the side of the outer circumferential surface of the housing away from the through hole. The digital display structure includes an LCD bracket arranged in the accommodation groove. The LCD bracket is arranged around the visual hole. A liquid crystal screen is arranged in the LCD bracket. A second PCB board is arranged on the side of the LCD bracket away from the visual hole. An installation hole is formed on the bottom wall of the housing. The power supply structure includes a battery arranged on the cover body and a switch button arranged in the installation hole. The switch button is used to control the on-off of the first PCB board and the battery.A thermometer disclosed in Chinese Patent No. 202420941604.5 includes an infrared forehead thermometer. A temperature measurement button is provided on the handle of the infrared forehead thermometer. It also includes a distance limiting mechanism. The distance limiting mechanism includes a bottom plate. The bottom plate is provided on the top surface of the infrared forehead thermometer. A rotating seat is provided on the top surface of the bottom plate. A rotating shaft is rotatably connected to the rotating seat. One end of the distance limiting rod is connected to the side of the rotating shaft. A driving structure is connected to the end of the rotating shaft. The driving structure is used to drive the rotating shaft to rotate. The bottom plate is connected to the top surface of the infrared forehead thermometer by adhesive. The driving structure includes a gear, a rack, an operating rod, an elastic member, and a fixed rod. A gear is provided at the end of the rotating shaft. A rack is engaged below the gear. The rack is horizontally slidably connected to the side wall of the bottom plate. An operating rod is provided on the rack. The bottom end of the operating rod extends downward. The operating rod is connected to the fixed rod through an elastic member. The fixed rod is connected to the bottom plate. A slide rail is provided on the side wall of the bottom plate. The rack is provided with a slide groove. The slide rail and the slide groove are horizontally slidably matched. A guide rod is provided in the middle of the operating rod. A guide hole is provided at the bottom of the fixed rod. The guide rod and the guide hole are horizontally slidably matched. The elastic member is a spring. The spring is sleeved on the guide rod. One end of the spring is connected to the operating rod. The other end of the spring is connected to the fixed rod. A stop block is provided at the end of the guide rod away from the operating rod. The fixed rod is provided between the stop block and the operating rod. One end of the spring abuts against the operating rod. The other end of the spring abuts against the fixed rod. The driving structure includes a driving motor. The chassis of the driving motor is connected to the side wall of the bottom plate. The output end of the driving motor is connected to the end of the rotating shaft. A receiving box is provided on the top surface of the bottom plate. A wiping hole is provided on the side of the receiving box close to the distance limiting rod. Disinfectant cotton is provided in the receiving box. The disinfectant cotton protrudes from the wiping hole. The end of the distance limiting rod away from the rotating shaft cooperates with the disinfectant cotton.The infrared thermometer structure for identifying a probe cover based on magnetic field changes disclosed in Chinese Patent No. 202323320646.1 includes: an infrared thermometer body; a connecting member and a temperature measuring probe, the connecting member is disposed at the upper end of the infrared thermometer body, and the temperature measuring probe is disposed on the connecting member; a probe cover, which is buckled on the temperature measuring probe; a magnetic member is provided on the inner side wall of the probe cover, a magnetic conductive member is provided inside the butt joint of the connecting member and the infrared thermometer body, a magnetic induction element is provided inside the infrared thermometer body, and the magnetic induction element is electrically connected to a control component inside the infrared thermometer body. When the probe cover is buckled on the temperature measuring probe or when the probe cover is removed from the temperature measuring probe, the magnetic induction element is configured to generate magnetic induction with the magnetic member. The magnetic member is a magnet block, the magnetic conductive member is made of iron material, a first mounting protrusion protrudes from the inside of the connecting member towards the infrared thermometer body, and a first accommodating hole is provided on the first mounting protrusion; one end of the infrared thermometer body close to the connecting member forms a mounting plate, a second mounting protrusion protrudes from the mounting plate towards the direction away from the connecting member, and a second accommodating hole is provided on the second mounting protrusion. A part of the magnetic conductive member is inserted into the first accommodating hole, and the other part is inserted into the second accommodating hole. The magnetic induction element is a magnetic reed switch or a Hall sensor. The infrared thermometer body is one of an infrared thermometer for forehead temperature measurement, an infrared thermometer for ear canal temperature measurement, or an infrared thermometer for both forehead and ear canal temperature measurement. In the infrared thermometer for both forehead and ear canal temperature measurement, when the probe cover is buckled on the temperature measuring probe or when the probe cover is removed from the temperature measuring probe, the control component is used to control the infrared thermometer to switch between the forehead temperature measurement mode and the ear canal temperature measurement mode. In the infrared thermometer for forehead temperature measurement or in the infrared thermometer for ear canal temperature measurement, when the probe cover is buckled on the temperature measuring probe or when the probe cover is removed from the temperature measuring probe, the control component is used to control the infrared thermometer to turn off or on. A spotlight is provided on the surface of the connecting member, and the spotlight is electrically connected to the control component of the infrared thermometer body; in the infrared thermometer for forehead temperature measurement or in the infrared thermometer for ear canal temperature measurement, when the probe cover is buckled on the temperature measuring probe or when the probe cover is removed from the temperature measuring probe, the control component is used to control the spotlight to turn off or on. A heating element is provided inside the temperature measuring probe, and the heating element is electrically connected to the control component of the infrared thermometer body; in the infrared thermometer for forehead temperature measurement or in the infrared thermometer for ear canal temperature measurement, when the probe cover is buckled on the temperature measuring probe or when the probe cover is removed from the temperature measuring probe, the control component is used to control the heating element to turn off or on. However, it has the following defects: First, both use an embedded display screen to display the temperature, which is not convenient for observation and monitoring; Second, both are single measurements and cannot achieve long-term continuous monitoring. For some special patients, especially infants, it is difficult to meet the need for continuous monitoring of body temperature throughout the night, and the caregiver needs to get up multiple times to measure, which is very inconvenient. Therefore, it is necessary to develop an electronic thermometer that can continuously monitor, is convenient for reading and recording. Summary of the Invention:

[0003] The object of the present invention is to overcome the drawbacks of the prior art, and develop and design an electronic thermometer, which can view the body temperature monitoring data in real time through a handheld terminal, avoiding frequent measurement and observation of body temperature.

[0004] To achieve the above object, the main structure of the electronic thermometer involved in the present invention is as Figure 1-2 shown, including a housing and a temperature-sensitive metal sheet disposed outside thereof, a battery and a circuit board connected to each other inside, and a temperature sensor connected to the circuit board;

[0005] Among them, the main structure of the housing is as Figure 3 shown, including a top cover and a bottom cover connected to each other, and an inner cover disposed therebetween. The temperature-sensitive metal sheet is disposed on the bottom cover. A battery compartment is provided at the center of the inner cover, and the battery is installed in the battery compartment. The circuit board is disposed between the bottom cover and the inner cover;

[0006] The circuit board is at least integrated with a main control chip, a Hall sensor, an LED indicator, and a positive electrode elastic sheet and a negative electrode elastic sheet that are respectively in contact with the positive and negative electrodes of the battery;

[0007] The temperature sensor is in contact with the temperature-sensitive metal sheet.

[0008] In order to ensure the stable connection between the battery and the circuit board in the present invention, a protrusion for pressing the battery is provided at the position of the top cover corresponding to the battery.

[0009] In order to quickly measure the temperature value in the present invention, a heat-conducting material and a heat-insulating material are respectively provided between the temperature sensor and the temperature-sensitive metal sheet and the battery. The heat-conducting material includes heat-conducting silicone grease, flexible heat-conducting pads and other materials with heat-conducting functions, and the heat-insulating material includes foam and other materials with heat-insulating functions.

[0010] The shape of the housing involved in the present invention includes a circular shape, an oval shape, a heart shape and other cartoon shapes that attract infants and young children;

[0011] The main control chip is used to implement basic functions including voltage monitoring, temperature monitoring, temperature prediction and wireless communication. The Hall sensor is used to implement the automatic power-on and power-off function. The LED indicator lights up and flashes when the device is powered on and a wireless connection is established, indicating the current working state. Three typical structures of the positive electrode elastic sheet and the negative electrode elastic sheet are as Figures 4-6 shown, both are elastic conductive metal sheets, which are respectively in contact with the positive and negative electrodes of the battery to supply power to the circuit board;

[0012] The temperature sensor includes a thermistor, a digital pulse temperature sensor and other types of temperature sensors.

[0013] The electronic thermometer involved in the present invention is used in combination with a storage box with an internal magnet to realize the automatic power-on and power-off function:

[0014] When the electronic thermometer is placed in the storage box, the Hall sensor is triggered under the action of the magnet, and the electronic thermometer shuts down.

[0015] When the electronic thermometer is taken out of the storage box, the Hall sensor leaves the action range of the magnet, and the electronic thermometer automatically powers on.

[0016] The electronic thermometer also has the function of automatically shutting down after a set period of static placement. The automatically shut-down electronic thermometer needs to be put back into the storage box and then taken out again to power on again.

[0017] The working principle of the electronic thermometer involved in the present invention is as follows:

[0018] The electronic thermometer is pasted under the armpit of the user through medical double-sided tape, so that the temperature-sensing metal piece contacts the skin, and the temperature sensor is in close contact with the temperature-sensing metal piece through a heat-conducting material.

[0019] The reading of the temperature sensor changes with the change of the human body temperature value conducted through the temperature-sensing metal piece. The main control chip on the circuit board reads the reading of the temperature sensor and converts it into the corresponding temperature value, and transmits it to the APP on the handheld terminal (including mobile phones, tablets, bracelets or other electronic devices supporting the corresponding wireless communication function) in a wireless communication manner (including Bluetooth, Wi-Fi, etc.) for real-time display. When the body temperature of the user changes, the temperature value changes accordingly. When the temperature exceeds the set value in the APP, the APP gives an alarm through a ringtone or vibration.

[0020] In addition, the main control chip also has a temperature prediction function: when the temperature measurement value is in the rising process, the main control chip starts the temperature prediction function, calculates the temperature compensation value by analyzing the temperature change in the rising stage, adds the temperature compensation value to the current test temperature to obtain the temperature prediction value. The temperature compensation value changes continuously during the temperature rise process and decreases to 0 until the temperature stabilizes. Among them, the time to obtain the temperature prediction value is faster than that of the thermometer in the prior art, and it can approach the human body temperature about 3 minutes after the start of the test. The error between the temperature prediction value and the stable temperature (i.e., the human body temperature at this time) is not greater than 0.2 °C. As Figure 7 shown, it can shorten the time to obtain the reference temperature value for judging whether the body temperature is normal.

[0021] Compared with the prior art, the present invention has functions such as temperature monitoring, temperature prediction, wireless communication, automatic power on and off, etc. It can continuously monitor the temperature without interruption, and transmit the temperature value to a handheld terminal device via wireless communication for viewing, which is convenient to use. When in use, to avoid rapid depletion of the battery power, the electronic thermometer will automatically turn off when placed in the storage box and automatically turn on when taken out of the storage box, which is environmentally friendly. It has a simple structure, is delicate and compact, easy to carry, has a beautiful appearance, can effectively avoid the resistance of infants, and the body temperature data can be viewed in real time through the handheld terminal device, greatly reducing the labor intensity of taking care of infants at night, as well as the elderly and patients who are unable to take care of themselves. BRIEF DESCRIPTION OF THE DRAWINGS:

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the back of the main structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the internal composition of the present invention.

[0025] Figure 4 It is a schematic diagram of a positive electrode elastic sheet related to the present invention.

[0026] Figure 5 It is a schematic diagram of another positive electrode elastic sheet related to the present invention.

[0027] Figure 6 It is a schematic diagram of a negative electrode elastic sheet related to the present invention.

[0028] Figure 7 It is a comparison diagram of the temperature prediction algorithm and the actual temperature test results related to the present invention.

[0029] Figure 8 It is a schematic diagram of the front side of the circuit board related to Embodiment 1 of the present invention.

[0030] Figure 9 It is a schematic diagram of the back side of the circuit board related to Embodiment 1 of the present invention.

[0031] Figure 10 It is a schematic diagram of the installation of the circuit board related to Embodiment 1 of the present invention.

[0032] Figure 11 It is a schematic diagram of the installation of the heat insulation material related to Embodiment 1 of the present invention.

[0033] Figure 12 It is a schematic diagram of the connection relationship between the circuit board and the sensor related to Embodiment 2 of the present invention.

[0034] Figure 13Schematic diagram of the installation of the circuit board involved in Embodiment 2 of the present invention. Specific implementation method:

[0035] The present invention will be further described below through implementation examples in conjunction with the accompanying drawings.

[0036] Embodiment 1:

[0037] The main structure of the electronic thermometer involved in this embodiment is as Figures 8-11 shown, including a housing 1, a temperature-sensitive metal sheet 2, a battery 3, a circuit board 4, a temperature sensor 5, a connecting member 6, a heat-conducting material 7, and a heat-insulating material 8; a temperature-sensitive metal sheet 2 is arranged outside the housing 1, and a battery 3 and a circuit board 4 connected to each other are arranged inside; the circuit board 4 is connected to the temperature sensor 5;

[0038] Among them, the main structure of the housing 1 includes a top cover 11 located at the upper part, a bottom cover 12 located at the lower part, and an inner cover 13 arranged between the two. The top cover 11 and the bottom cover 12 are connected in a snap-fit manner, and the inner cover 13 is fixed on the bottom cover 12; a protrusion is arranged on the inner surface of the top cover 11, corresponding to the position of the battery 3. A through hole is opened at the center of the bottom cover 12 for arranging the temperature-sensitive metal sheet 2, and a battery compartment 14 is arranged on the inner cover 13;

[0039] The circuit board 4 is at least integrated with a main control chip 41, a Hall sensor 42, an LED indicator 43, a positive electrode elastic sheet 44, and a negative electrode elastic sheet 45. The positive electrode elastic sheet 44 and the negative electrode elastic sheet 45 are welded on the circuit board 4 and are respectively in contact with the positive and negative electrodes of the battery 3 to supply power to the circuit board 4;

[0040] The temperature sensor 5 is welded and connected to the circuit board 4 through a connecting member 6 (including a wire and a flexible circuit board), is arranged in the through hole of the bottom cover 12, and is in contact with the temperature-sensitive metal sheet 2;

[0041] In addition, a heat-conducting material 7 is arranged between the temperature sensor 5 and the temperature-sensitive metal sheet 2, and a heat-insulating material 8 is arranged between the temperature sensor 5 and the battery 3.

[0042] The material of the housing 1 involved in this embodiment includes ABS plastic, and the shape is disc-shaped;

[0043] The inner side of the temperature-sensitive metal sheet 2 is lower than the inner surface of the bottom cover 12, which is convenient for placing the temperature sensor 5 in the through hole;

[0044] The battery 3 includes a button battery, is arranged in the battery compartment 14 through the positive electrode elastic sheet 44. After the top cover 11 and the bottom cover 12 are closed, the battery 3 is compacted by the protrusion arranged on the top cover 11 to ensure that the battery 3 is in close contact with the positive electrode elastic sheet 44 and the negative electrode elastic sheet 45;

[0045] The main control chip 41 is a chip with Bluetooth communication function, which can read the voltage value of the battery 3 in real time and send a prompt message when the voltage value is lower than the alarm value. The positive electrode elastic piece 44 is a U-shaped elastic piece, which has both elasticity and ease of use. It and the negative electrode elastic piece 45 are both welded on the circuit board 4 and are in contact with the positive and negative electrodes of the battery 3 respectively to supply power to the circuit board 4;

[0046] The temperature sensor 5 is a digital pulse temperature sensor, which is welded on the circuit board 4 through a flexible circuit board;

[0047] The heat-conducting material 7 is heat-conducting silicone grease, which covers the temperature sensor 5 and attaches the temperature sensor 5 to the inner side of the temperature-sensing metal sheet 2;

[0048] The heat-insulating material 8 is foam, which is pasted on the surface of the temperature sensor 5 far from the temperature-sensing metal sheet 2 to assist in fixing the temperature sensor 5 and can shorten the temperature measurement time of the temperature sensor 5.

[0049] In the process of using the electronic thermometer involved in this embodiment:

[0050] When the temperature of the external heat source to be measured changes, the output pulse of the temperature sensor 5 changes accordingly;

[0051] The main control chip 41 reads the output pulse of the temperature sensor 5, calculates the current temperature data after conversion. When the temperature measurement value is in the rising process, the main control chip 41 starts the temperature prediction function, corrects the temperature measurement value to the temperature prediction value. At the same time, the main control chip 41 can read and calculate the voltage value of the battery 3;

[0052] After the main control chip 41 packs the temperature value and the voltage value, it uploads them to the APP on the handheld terminal device connected to it through Bluetooth transmission for real-time display.

[0053] Embodiment 2:

[0054] The main body structure of the electronic thermometer involved in this embodiment is the same as that of Embodiment 1, and the differences are as Figures 12-13 shown. The temperature sensor 5 is a thermistor, which is welded on the circuit board 4 through a wire.

Claims

1. An electronic thermometer, characterized in that, The main structure includes a housing, a temperature-sensitive metal sheet disposed outside the housing, a battery and a circuit board connected to each other inside the housing, and a temperature sensor connected to the circuit board; the main structure of the housing includes a top cover and a bottom cover connected to each other, and an inner cover disposed between the two.

2. The electronic thermometer according to claim 1, wherein The temperature-sensitive metal sheet is disposed on the bottom cover. A battery compartment is provided in the center of the inner cover, and the battery is installed in the battery compartment. The circuit board is disposed between the bottom cover and the inner cover.

3. The electronic thermometer according to claim 1 or 2, characterized in that, The circuit board is at least integrated with a main control chip, a Hall sensor, an LED indicator, a positive electrode elastic sheet and a negative electrode elastic sheet that are respectively in contact with the positive and negative electrodes of the battery.

4. The electronic thermometer according to claim 1, characterized in that, The temperature-sensitive metal sheet is in contact with the temperature sensor.

5. The electronic thermometer according to claim 2, characterized in that, A protrusion for pressing the battery is provided at the position of the top cover corresponding to the battery.

6. The electronic thermometer according to claim 1, 2, 4 or 5, characterized in that, Thermal conductive materials and thermal insulation materials are respectively provided between the temperature sensor and the temperature-sensitive metal sheet and the battery.

7. The electronic thermometer according to claim 6, wherein The thermal conductive materials include thermal conductive silicone grease, flexible thermal conductive pads and other materials with thermal conductive functions, and the thermal insulation materials include foam and other materials with thermal insulation functions.

8. The electronic thermometer according to claim 6, wherein, The shape of the housing includes a circle, an ellipse, a heart shape and other cartoon shapes that attract infants and young children; the main control chip is used to implement basic functions including voltage monitoring, temperature monitoring, temperature prediction and wireless communication, and also has a temperature prediction function. The Hall sensor is used to implement the automatic power-on and power-off function. The LED indicator lights up and flashes when the device is powered on and a wireless connection is established, indicating the current working state. The positive electrode elastic sheet and the negative electrode elastic sheet are both elastic conductive metal sheets, which are respectively in contact with the positive and negative electrodes of the battery to supply power to the circuit board; the temperature sensor includes a thermistor and a digital pulse temperature sensor.

9. The electronic thermometer according to claim 6, characterized in that, It is used in conjunction with a storage box with a built-in magnet: When the electronic thermometer is placed in the storage box, the Hall sensor is triggered under the action of the magnet, and the electronic thermometer shuts down. When the electronic thermometer is taken out of the storage box, the Hall sensor leaves the range of action of the magnet, and the electronic thermometer automatically powers on. The electronic thermometer also has a function of automatically shutting down after a set period of time of standing still. The automatically shut-down electronic thermometer powers on again after being taken out and put back into the storage box.

10. The electronic thermometer according to claim 6, wherein The working principle is as follows: The electronic thermometer is pasted under the armpit, the temperature-sensitive metal sheet contacts the skin, and the temperature sensor contacts the temperature-sensitive metal sheet through the thermal conductive material. The reading of the temperature sensor changes with the change of the human body temperature value conducted through the temperature-sensitive metal sheet. The main control chip reads the reading of the temperature sensor and converts it into the corresponding temperature value, and transmits it to the APP on the handheld terminal in a wireless communication manner for real-time display. When the temperature exceeds the set value in the APP, the APP gives an alarm through a ringtone or vibration.

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