CN102183314A - Wireless body temperature monitoring device - Google Patents

Abstract

The invention discloses a wireless body temperature monitoring device, which comprises a control circuit, a thermistor probe and an antenna, and the control circuit is respectively electrically connected with the thermistor probe and the antenna, wherein the thermistor probe is used for collecting Human body temperature change information, and convert it into corresponding resistance information and send it to the control circuit, and then the control circuit processes the resistance information to obtain the corresponding monitoring results, and then the antenna sends the monitoring results . The device sends out the monitoring results through the antenna, so as to realize the wireless working mode, so that the structure of the device is simple. And the device can be pasted on the armpit of the human body to monitor the body temperature of the human body in real time. The device is simple in structure and easy to use, and is very suitable for long-term temperature monitoring of infants or patients in hospitals and families.

Description

A wireless body temperature monitoring device

technical field

The invention relates to the field of sensing technology and the field of packaging technology, in particular to a wireless body temperature monitoring device.

Background technique

There are two commonly used temperature monitoring methods. One is to use an infrared temperature detector to measure the temperature of the face of the human body. This method can only measure the surface temperature of the human body, and the cost is high. It is generally used in public places with a large flow of people, such as the entrances and exits of stations and airports. The other is to use a traditional glass thermometer and manually put the thermometer under the armpit of the user for measurement. The measurement process is cumbersome and inconvenient to use.

At present, the daily body temperature measurement in hospitals and families mainly adopts the second traditional glass thermometer. When taking care of patients or infants, if you need to observe their body temperature changes for a long time, you must take a measurement action at intervals, which is very troublesome. It not only affects the rest of patients or infants, but also consumes a lot of time and energy for caregivers , and the operation process is likely to cause the thermometer to break, causing mercury pollution.

Contents of the invention

The main technical problem to be solved by the present invention is to provide a wireless body temperature monitoring device. The wireless body temperature monitoring device of the present invention is easy to use, has accurate body temperature monitoring results, and can monitor body temperature for a long time.

In order to solve the problems of the technologies described above, the technical scheme adopted in the present invention is as follows:

A wireless body temperature detection device, comprising a thermistor probe, a control circuit and an antenna, the control circuit is electrically connected to the thermistor probe and the antenna, and the thermistor probe is used to collect body temperature changes information, and convert it into corresponding resistance value information, and then send the resistance value information to the control circuit; the control circuit is used to process the resistance value information to obtain corresponding body temperature monitoring results; the The antenna is used to send the monitoring result.

Further, the device also includes a base material for carrying the control circuit, the base material is arranged above the thermistor probe, and exposes the gap between the control circuit and the thermistor probe. connection, and the control circuit is fixed on the base material through a fixing component, and the antenna is arranged on the base material.

Wherein, the fixing component is a fixing adhesive layer.

Further, the antenna is also used to receive the high-frequency carrier wave sent by the reader-writer within the receiving range of the antenna, and send it to the control circuit, and the control circuit is used to convert the high-frequency carrier wave into a stable power supply voltage and supplies power to the control circuit.

Wherein, the control circuit includes a signal processing module and a power supply module, the power supply module is used to convert the high-frequency carrier wave received by the antenna into a stable power supply voltage, and is used to supply power to the signal processing module; the signal processing module It is used for processing the resistance value information sent by the thermistor probe, and sending out the body temperature monitoring result obtained after processing through the antenna.

Further, the power supply module includes: a rectifier and a voltage conversion sub-module, the rectifier is used to convert the high-frequency signal received by the antenna into a DC voltage and send it to the voltage conversion sub-module; the voltage conversion The sub-module is used to convert the DC voltage into a stable power supply voltage and supply power to the signal processing module.

Further, the signal processing module includes: a body temperature processing circuit, an amplification/filtering sub-module, an analog/digital converter, a digital sub-module, and a modem, and the body temperature processing circuit is used to convert the resistance value information of the thermistor into The electrical signal is sent to the amplification/filtering submodule; the amplification/filtering submodule is used to amplify and filter the electrical signal, and send the processed electrical signal to the analog/digital conversion The digital sub-module is used to send control information to the analog/digital converter; the analog/digital converter is used to convert the amplified and filtered electrical signal into a corresponding body temperature according to the control information The monitoring result is sent to a modem; the modem is used to send the body temperature monitoring result to the antenna in a reflection modulation manner.

Further, the device further includes an encapsulation filler, the encapsulation filler encloses the control circuit, and the connections between the control circuit and the thermistor probe and the antenna respectively.

Further, the packaging filling body is a ceramic packaging filling body or an epoxy resin packaging filling body.

Further, the control circuit is a chip, and the chip includes a first conductive pin and a second conductive pin, the first conductive pin is electrically connected to the antenna, and the second conductive pin is connected to the antenna. The thermistor probe is electrically connected.

The beneficial effects of the present invention are:

The invention detects the body temperature change information of the human body through a thermistor, thereby converting the body temperature change information of the human body into the corresponding resistance value information of the thermistor, and then processes the resistance value information output by the thermistor through a control circuit, thereby The body temperature monitoring result is obtained, and then the monitoring result is sent out by the antenna. Since the resistance value of the thermistor in the present invention changes with temperature, and its temperature coefficient is large, its sensitivity is high, and its response speed is fast, it is suitable for measuring small temperature changes, so the body temperature obtained by the wireless body temperature monitoring device of the present invention The monitoring results are more precise and accurate, and the wireless body temperature monitoring device of the present invention uses an antenna to send the processed monitoring results and the body temperature monitoring results, without the need for additional cables or other transmission lines to send the signals, so that the device of the present invention is How it works wirelessly. Due to the wireless transmission mode of the wireless body temperature monitoring device of the present invention, the device has a simple structure and is convenient to use. Therefore, the wireless body temperature monitoring device of the present invention not only has high monitoring accuracy, but also only needs to stick the device on the armpit to realize long-term body temperature monitoring, which is suitable for long-term body temperature monitoring of babies or patients in hospitals or homes.

Description of drawings

Fig. 1 is a sectional view of an embodiment of the wireless body temperature monitoring device of the present invention;

Fig. 2 is a functional block diagram of an embodiment of the chip of Fig. 1;

Fig. 3 is a block diagram of an embodiment of the power supply module in Fig. 2;

Fig. 4 is a block diagram of an embodiment of the signal processing circuit in Fig. 2;

Fig. 5 is a block diagram combining the power supply module and the signal processing module of Fig. 3 and Fig. 4;

FIG. 6 is a schematic diagram of the wireless body temperature monitoring device of the present invention used for body temperature monitoring.

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

Please refer to FIG. 1 , which is a cross-sectional view of an embodiment of the wireless body temperature monitoring device of the present invention. The wireless body temperature monitoring device of this embodiment includes a control circuit 1 and a thermistor probe 2, the control circuit 1 and the thermistor probe 2 are electrically connected, and also includes an antenna 4, and a device for carrying the control circuit 1 and the antenna 4 Substrate 3, wherein the substrate 3 covers the thermistor probe 2 and exposes the connection between the control circuit 1 and the thermistor probe 2, and the control circuit 1 is fixed on the substrate 3 through the fixing member 5.

In this embodiment, an antenna 4 is arranged on the substrate 3 by printing, and the two ends of the antenna 4 are respectively arranged on two sides of the control circuit 1 and are electrically connected to the control circuit 1 .

The control circuit 1 in this embodiment is a chip, including a first conductive pin 11 and a second conductive pin 12 . In this embodiment, two first conductive pins 21 are used to weld the two ends of the antenna 4 respectively, so as to realize the electrical connection between the chip and the antenna 4; Both sides are soldered to realize the electrical connection between the chip and the thermistor probe 2 .

In this embodiment, the fixing component 5 between the control circuit 1 and the substrate 3 is a fixing adhesive layer.

Please refer to Fig. 1, in order to better ensure a good electrical connection between the control circuit 1, the antenna 4 and the thermistor probe 2, the wireless body temperature monitoring device in this implementation is also provided with a packaging filling body 6, the packaging filling body 6 Coating the control circuit 1, and the connection between the control circuit 1 and the antenna 4 and the thermistor probe 2 respectively, that is, the package filling body 6 of this embodiment covers the chip and the antenna 4, and at the same time covers the chip's The junction of the first conductive pin 11 and the antenna 4, the junction of the second conductive pin 12 of the chip and the thermistor probe 2, thereby forming a rectangular package filling body 6 on the thermistor probe 2, of course the package filling The body 6 can also have other shapes.

The packaging filling body 6 in this embodiment is made of ceramics or epoxy resin.

The wireless body temperature monitoring device of this embodiment monitors the change of the body temperature by using the thermistor probe 2, thereby converting the change of the body temperature into the corresponding resistance change of the thermistor, and sending the resistance information to the control circuit 1 , the resistance value information is processed by the control circuit 1, and converted into corresponding body temperature monitoring results and sent out, thereby realizing the monitoring of human body temperature. Because the thermistor of the present invention has high sensitivity and fast response speed, it is suitable for measuring small temperature changes, thereby ensuring the accuracy and precision of body temperature monitoring results. And the wireless body temperature monitoring device of this embodiment receives the high-frequency carrier wave sent by the nearby reader-writer by setting the antenna 4, and sends it to the control circuit 1, which is converted into a stable power supply voltage by the control circuit 1, thereby providing The entire control circuit 1 is powered, therefore, the wireless body temperature monitoring device of this embodiment does not require additional battery power. In addition, in this embodiment, the body temperature monitoring results processed by the control circuit 1 are sent by the control circuit 1 to the antenna 4, and then sent out by the antenna 4, so that no additional cables or connecting wires are required to send the body temperature monitoring results, so that the present invention The wireless body temperature monitoring device of this embodiment is simple in structure, easy to manufacture, and when the body temperature needs to be monitored for a long time, it is only necessary to paste the wireless body temperature monitoring device of this embodiment on the armpit, and the temperature change information is collected in real time by the thermistor probe , and convert it into corresponding resistance value information, and then process the monitoring results by the control circuit, and send the monitoring results out in real time by the antenna, thus realizing long-term body temperature monitoring. In addition, the wireless body temperature monitoring device of this embodiment covers the control circuit 1 and its joints with the antenna 4 and the thermistor probe 2 through the packaging filling body, so that the device is shock-resistant, pressure-resistant and highly reliable.

Please refer to FIG. 2 , which is a functional block diagram of an embodiment of the control circuit 1 of the wireless body temperature monitoring device of this embodiment. The control circuit 1 of this embodiment includes a power supply module 13 and a signal processing module 14, the power supply module 13 and the signal processing module 14 jointly lead out the first conductive pin 11 of the control circuit 1 for connecting with the antenna 4, and the signal processing module 14 leads out the second conductive pin 12 of the chip 1 for connecting with the thermistor probe 2 . Among them, the power supply module 13 receives the high-frequency carrier wave transmitted by the antenna 3 through the first conductive pin 11, and converts it into a stable power supply voltage, thereby supplying power to the entire control circuit 1; The pin 12 receives the resistance information sent by the thermistor probe 2 and converts it into a corresponding body temperature monitoring result, which is then sent out through the first conductive pin 11 and the antenna 3 .

Please refer to FIG. 3 and FIG. 5 , the power supply module 13 of the control circuit 1 in this embodiment includes: a rectifier 131 and a voltage conversion sub-module 132, the rectifier 131 is electrically connected with the antenna 3 through the first conductive pin 11, and is used for receiving The high-frequency carrier wave sent by the antenna 3 is converted into a DC voltage, and then sent to the voltage conversion sub-module 132, and the voltage conversion sub-module 132 converts it into a stable power supply voltage, and supplies power to the signal processing module 14.

Please refer to Fig. 4 and Fig. 5, the signal processing module 14 of chip 1 in the present embodiment includes: body temperature processing circuit 141, amplification/filtering sub-module 142, ADC (Analog-to-Digital Converter, analog/digital converter or analog /digital converter) 143, modem 144 and digital sub-module 145, the body temperature processing circuit 141 is connected to the thermistor probe 2 through the second conduction pin 12, for receiving the resistance value information output by it, and the resistance value The information is converted into an electrical signal, and processed by the amplification/filtering sub-module 142 to obtain a corresponding body temperature signal, and then the body temperature signal is sent to an ADC (Analog-to-Digital Converter, Analog-to-Digital Converter or Analog-to-Digital Converter) 143, ADC (Analog-to-Digital Converter, analog/digital converter or analog/digital converter) 143 triggers digital sub-module 145 to match corresponding control information for it after receiving the body temperature signal, then ADC (Analog-to-Digital Converter (analog/digital converter or analog/digital converter) 143 converts the body temperature signal into a corresponding body temperature monitoring result according to the control information, and sends the body temperature monitoring result to the modem 144, then the modem 144 monitors the body temperature The result is sent out via the antenna 4 in the form of reflection modulation.

In this embodiment, after the digital sub-module 145 is triggered, it configures corresponding control information for the corresponding ADC according to different ADC interfaces, such as configuring the working mode, logic function and timing of the ADC, then the control of this embodiment The information is the corresponding working mode control information, logical function control information, or timing control information.

The wireless respiration monitoring device of this embodiment will be described in detail below in conjunction with the working principle of the wireless respiration monitoring device of the present invention.

As shown in Figure 5, the wireless body temperature monitoring device 10 of this embodiment is pasted on the armpit of the human body. The device receives the high-frequency carrier wave sent by the reader-writer 20 nearby through the antenna 4, and transmits it to the human body through the first pin 11 of the chip. A rectifier 131, the rectifier 131 converts the high-frequency carrier into a DC voltage, and then sends it to the voltage conversion sub-module 132 to obtain a stable power supply voltage, thereby supplying power to the entire chip. Wherein, the thermistor probe 2 detects the body temperature of the human body. Since the resistance value of the thermistor varies with temperature, the thermistor probe 2 sends its resistance value information to the body temperature processing circuit 141 through the second conductive pin 12. The body temperature processing circuit 141 converts the resistance value information into an electrical signal, and sends it to the amplification/filtering sub-module 142 for amplification and filtering, so as to obtain an accurate body temperature signal (that is, the amplified and filtered electrical signal), and sends it to Give ADC (Analog-to-Digital Converter, analog/digital converter or analog/digital converter) 143, then this ADC (Analog-to-Digital Converter, analog/digital converter or analog/digital converter) 143 according to digital The control information sent by the sub-module 145 converts the body temperature signal into a digital signal (ie, the body temperature monitoring result), and sends the digital signal to the modem 144, and the modem 144 sends the signal through the antenna 4 in a reflection modulation manner.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. A wireless body temperature monitoring device, characterized in that, comprising a thermistor probe, a control circuit and an antenna, the control circuit is electrically connected with the thermistor probe and the antenna respectively, and the thermistor probe It is used to collect the change information of human body temperature, convert it into corresponding resistance information, and then send the resistance information to the control circuit; the control circuit is used to process the resistance information to obtain the corresponding resistance information. body temperature monitoring results; the antenna is used to send out the monitoring results. 2. The device according to claim 1, further comprising a base material for carrying the control circuit, the base material is arranged above the thermistor probe, and exposes the control circuit and The connection between the thermistor probes, and the control circuit is fixed on the substrate through a fixing component, and the antenna is arranged on the substrate. 3. The device according to claim 2, wherein the fixing member is a fixing adhesive layer. 4. The device according to claim 2, wherein the antenna is also used to receive the high-frequency carrier wave sent by the reader-writer within the receiving range of the antenna, and send it to the control circuit, and the control circuit It is used to convert the high-frequency carrier into a stable power supply voltage and supply power to the control circuit. 5. The device according to claim 4, wherein the control circuit includes a signal processing module and a power supply module, the power supply module is used to convert the high-frequency carrier wave received by the antenna into a stable power supply voltage, and is used to Power is supplied to the signal processing module; the signal processing module is used to process the resistance information sent by the thermistor probe, and send out the body temperature monitoring result obtained after processing through the antenna. 6. The device according to claim 5, wherein the power supply module comprises: a rectifier and a voltage conversion sub-module, the rectifier is used to convert the high-frequency signal received by the antenna into a DC voltage and send For the voltage conversion sub-module; the voltage conversion sub-module is used to convert the DC voltage into a stable power supply voltage and supply power to the signal processing module. 7. The device according to claim 6, wherein the signal processing module comprises: a body temperature processing circuit, an amplification/filtering submodule, an analog/digital converter, a digital submodule and a modem, the body temperature processing circuit, It is used to convert the resistance value information of the thermistor into an electrical signal, and send it to the amplification/filtering sub-module; the amplification/filtering sub-module is used to amplify and filter the electrical signal, and send the The processed electrical signal is sent to the analog/digital converter; the digital sub-module is used to send control information to the analog/digital converter; the analog/digital converter is used to transmit control information according to the control information converting the amplified and filtered electrical signal into a corresponding body temperature monitoring result, and sending it to a modem; the modem is used to send the body temperature monitoring result to the antenna in a reflection modulation manner. 8. The device according to any one of claims 4 to 7, further comprising a package filler, the package filler wraps the control circuit, and the control circuit is connected to the thermosensitive Resistance probe and the connection of the antenna. 9 . The device according to claim 8 , wherein the packaging filling body is a ceramic packaging filling body or an epoxy resin packaging filling body. 10. The device according to claim 9, wherein the control circuit is a chip, the chip includes a first conductive pin and a second conductive pin, and the first conductive pin is electrically connected to the antenna. The second conductive pin is electrically connected to the thermistor probe. the

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