Body temperature detection system

Abstract

The utility model discloses a body temperature detection system, which comprises a power supply module, a wireless module and a temperature acquisition module, the wireless module and the temperature acquisition module are connected with the power supply module, the power supply module outputs stable voltage to the wireless module and the temperature acquisition module, and the wireless module comprises a micro-control unit, an ADC acquisition unit and a wireless transmission unit. The temperature acquisition module acquires temperature and transmits the temperature to the micro-control unit through the ADC acquisition unit, and the micro-control unit outputs data to terminal equipment through the wireless transmission unit. According to the utility model, the detection precision is improved, the wireless transmission is stable, and the system has the functions of falling detection, charging management and on-line upgrading.

Description

Technical Field

[0001] The utility model relates to the technical field of body temperature monitoring, in particular to a body temperature detection system. Background Art

[0002] At present, most conventional thermometers on the market are mercury thermometers. Using them to measure temperature is not only simple and intuitive, but also can avoid the error of external remote thermometers. However, the Minamata Convention on Mercury came into effect in China on August 16, 2017, which clearly stated that "from January 1, 2026, the production of mercury-containing thermometers and mercury-containing sphygmomanometers shall be prohibited. Therefore, it is necessary to use electronic thermometers instead of mercury thermometers, but the electronic thermometers in the existing technology have relatively low data acquisition accuracy and single functions. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a body temperature detection system with improved detection accuracy, stable wireless transmission, and the functions of fall-off detection, charging management, and online upgrade.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a body temperature detection system, including a power module and a wireless module and a temperature acquisition module connected to the power module, the power module outputs a stable voltage to the wireless module and the temperature acquisition module, the wireless module includes a micro control unit, an ADC acquisition unit, and a wireless transmission unit, the temperature acquisition module collects temperature and transmits it to the micro control unit through the ADC acquisition unit, and the micro control unit outputs the data to the terminal device through the wireless transmission unit.

[0005] As a preferred solution, the power supply module includes an input power supply and a linear voltage-regulated power supply, and the input power supply outputs a stable voltage through the linear voltage-regulated power supply.

[0006] As a preferred solution, the input power source is a battery, and the battery is connected to a linear voltage-regulated power supply.

[0007] As a preferred solution, the input power supply includes a charging management unit and a battery. The charging management unit is connected to the wireless module and the battery, and the charging management unit charges the battery. The battery is connected to a linear regulated power supply.

[0008] As a preferred solution, the temperature acquisition module includes two thermistor units connected in parallel, and the two thermistor units are respectively connected to the wireless module and the linear regulated power supply.

[0009] As a preferred solution, the wireless module is also connected to a reset module, and the reset module is connected to a linear regulated power supply.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model improves the detection accuracy, the wireless transmission is stable, and has the functions of fall-off detection, charging management, and online upgrading. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a principle block diagram of the utility model;

[0012] Figure 2 It is a circuit diagram of the wireless module in the utility model;

[0013] Figure 3 It is a circuit diagram of the linear voltage-stabilized power supply in the utility model;

[0014] Figure 4 It is a circuit diagram of the storage battery in the utility model;

[0015] Figure 5 It is a circuit diagram of the charging management unit in the utility model;

[0016] Figure 6 It is a circuit diagram of the reset module in the utility model;

[0017] Figure 7 It is the circuit diagram of the temperature acquisition module in the utility model;

[0018] Figure 8 It is a circuit diagram of a serial line debugging interface in the utility model; DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] Example:

[0021] like Figure 1 As shown, a body temperature detection system includes a power module and a wireless module and a temperature acquisition module connected to the power module. The power module outputs a stable voltage to the wireless module and the temperature acquisition module. The wireless module includes a micro control unit, an ADC acquisition unit, and a wireless transmission unit. The temperature acquisition module collects temperature and transmits it to the micro control unit through the ADC acquisition unit. The micro control unit outputs the data to the terminal device through the wireless transmission unit.

[0022] Specifically, Figure 2 As shown, in this embodiment, the wireless module adopts the Bluetooth integrated chip of HJ-180IMHV1.0 model produced by Hongjia Electronics, and the Bluetooth integrated chip integrates a micro control unit, an ADC acquisition unit, and a wireless transmission unit.

[0023] More specifically, the SWDCLK pin of the wireless module leads to the SWCLK pin, the VCC_IN of the wireless module leads to the 2.5V voltage pin, the P0.05 / AIN3 pin of the wireless module leads to the AD_VBAT pin, the P0.03 / AINI pin of the wireless module leads to the NTC1_ADC pin, the P0.04 / AIN2 pin of the wireless module leads to the NTC2_ADC pin, the EXC-ANT pin of the wireless module leads to the ANT pin, the P0.21 / RESET pin of the wireless module leads to the RST pin, the SWDIO pin of the wireless module leads to the SWDIO pin, and the P0.15 pin of the wireless module leads to the ChargeFlags pin.

[0024] More specifically, the ANT pin is connected to the cloud of the terminal device through the EXC-ANT pin of the wireless module. The utility model is applied to temperature measuring devices such as thermometers or temperature stickers, and the terminal device can perform OTA online upgrades on the temperature measuring device.

[0025] Preferably, the power supply module includes an input power supply and a linear voltage-regulated power supply, and the input power supply outputs a stable voltage through the linear voltage-regulated power supply.

[0026] Specifically, Figure 3 The figure shows a circuit diagram of a linear regulated power supply, which adopts a TLV74225PDQNR chip. The input end of the linear regulated power supply leads to a VBAT pin, and the output end of the linear regulated power supply leads to a 2.5V voltage pin, wherein the 2.5V voltage pin of the linear regulated power supply is connected to the 2.5V voltage pin of the wireless module.

[0027] More preferably, the input power source is a battery, and the battery is connected to a linear voltage-regulated power supply.

[0028] Specifically, the battery outputs a DC voltage to the linear voltage-stabilized power supply. In this embodiment, the linear voltage-stabilized power supply outputs a stable voltage of 2.5V.

[0029] More specifically, Figure 4 The circuit diagram of the battery is shown, wherein the positive electrode of the battery leads to the VBAT pin, the negative electrode of the battery is grounded, and the VBAT pin of the battery is connected to the VBAT pin of the linear regulated power supply.

[0030] More preferably, the input power source includes a charging management unit and a battery. The charging management unit is connected to the wireless module and the battery, and the charging management unit charges the battery. The battery is connected to a linear regulated power supply.

[0031] Specifically, the charging management unit may adopt a wireless charging method or a wired charging method. In this embodiment, the input power source adopted is a 5V / 1A charging head, and the battery is directly charged through the charging management unit.

[0032] More specifically, Figure 5 The figure shows a circuit diagram of a charging management unit, which adopts an HP4059D6-42 chip. The VCC pin of the charging management unit leads to the VCC pin, the CHGb pin of the charging management unit leads to the ChargeFlags pin, the BAT pin of the charging management unit leads to the VBAT pin and the AD_VBAT pin, the GND pin of the charging management unit leads to the TP1 test node, and the VCC pin of the charging management unit leads to the TP2 test node, wherein the ChargeFlags pin of the charging management unit is connected to the ChargeFlags pin of the wireless module, the VBAT pin of the charging management unit is connected to the VBAT pin of the battery and the VBAT pin of the linear regulated power supply, and the AD_VBAT pin of the charging management unit is connected to the AD_VBAT pin of the wireless module.

[0033] Preferably, the wireless module is also connected to a reset module, and the reset module is connected to a linear regulated power supply.

[0034] Specifically, Figure 6 The figure shows a circuit diagram of a reset module, wherein the reset module leads to a 2.5V voltage pin and an RST pin, wherein the 2.5V voltage pin of the reset module is connected to the 2.5V voltage pin of a linear regulated power supply, and the RST pin of the reset module is connected to the RST pin of the wireless module.

[0035] Preferably, the temperature acquisition module includes two thermistor units connected in parallel, and the two thermistor units are respectively connected to the wireless module and the linear regulated power supply.

[0036] Specifically, Figure 7 The figure shows a circuit diagram of a temperature acquisition module, in which one thermistor unit leads out a 2.5V voltage pin and an NTC1_ADC pin, and the other thermistor unit leads out a 2.5V voltage pin and an NTC2_ADC pin, wherein the 2.5V voltage pins of the two thermistor units are connected to the 2.5V voltage pins of a linear regulated power supply, the NTC1_ADC pin of one thermistor unit is connected to the NTC1_ADC pin of the wireless module, and the NTC2_ADC pin of the other thermistor unit is connected to the NTC2_ADC pin of the wireless module. This embodiment uses two thermistor units for temperature acquisition, which not only improves the accuracy but also prevents falling off.

[0037] In this embodiment, if Figure 8 The circuit diagram of the serial line debugging interface is shown, including a TP3 test node, a TP4 test node, a TP5 test node, and a TP6 test node. The TP3 test node is connected to the SWCLK pin of the wireless module, the TP4 test node is connected to the SWDIO pin of the wireless module, the TP5 test node is connected to the 2.5V voltage pin, and the TP6 test node is grounded. The utility model improves detection accuracy, stabilizes wireless transmission, and has the functions of shedding detection, charging management, and online upgrade.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A body temperature detection system, characterized in that: It includes a power module, a wireless module connected to the power module, and a temperature acquisition module. The power module outputs a stable voltage to the wireless module and the temperature acquisition module. The wireless module includes a micro control unit, an ADC acquisition unit, and a wireless transmission unit. The temperature acquisition module collects temperature and transmits it to the micro control unit through the ADC acquisition unit. The micro control unit outputs the data to the terminal device through the wireless transmission unit.

2. A body temperature detection system according to claim 1, characterized in that: The power supply module includes an input power supply and a linear voltage-stabilized power supply, and the input power supply outputs a stable voltage through the linear voltage-stabilized power supply.

3. A body temperature detection system according to claim 2, characterized in that: The input power source is a battery, and the battery is connected to a linear voltage-stabilized power source.

4. A body temperature detection system according to claim 2, characterized in that: The input power source includes a charging management unit and a battery. The charging management unit is connected to the wireless module and the battery, and the charging management unit charges the battery. The battery is connected to a linear regulated power supply.

5. A body temperature detection system according to claim 2, characterized in that: The temperature acquisition module includes two thermistor units connected in parallel, and the two thermistor units are respectively connected to the wireless module and the linear regulated power supply.

6. A body temperature detection system according to claim 2, characterized in that: The wireless module is also connected to a reset module, and the reset module is connected to a linear voltage-regulated power supply.

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