WO2017185352A1

WO2017185352A1 - Body temperature measurement device

Info

Publication number: WO2017185352A1
Application number: PCT/CN2016/080760
Authority: WO
Inventors: 司合帅; 杨和辉; 杨楠
Original assignee: 华为技术有限公司
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2017-11-02
Also published as: CN109414172A

Abstract

Provided is a temperature measurement device comprising a printed circuit (110), a temperature sensor (140), a wireless communication module (120), and a flexible battery (130). The flexible battery (130) is electrically connected to the temperature sensor (140). The output end of the temperature sensor (140) is coupled to the input end of the wireless communication module (120). The temperature sensor (140) and the wireless communication module (120) are mounted on the printed circuit (110), and the printed circuit (110), the temperature sensor (140) and the flexible battery (130) are enclosed in an encapsulating material (150, 160). According to the temperature measurement device, body temperature can better measured and health data is easily to be stored and detected.

Description

Body temperature measuring device

Technical field

The present invention relates to the field of electronic technology, and in particular to a body temperature measuring device.

Background technique

Existing human body temperature measuring devices, such as mercury thermometers, electronic thermometers, infrared thermometers, etc., need to be visually read and manually recorded, which is not conducive to the preservation of health data and the diagnosis and monitoring of diseases. The specific comparison can be seen in the following table:

Some existing smart devices, such as smart watches and wristbands, also have the function of measuring body temperature. However, these devices are bulky, and medically, the temperature measured at the wrist does not correctly reflect the human body temperature, and these The device is not suitable for use by children, especially babies.

Summary of the invention

One embodiment of the present invention provides a body temperature measuring device for better measurement of body temperature and for saving and detecting health data.

The body temperature measuring device includes: a printed circuit (110), a temperature sensor (140), a wireless communication module (120), a flexible battery (130), and the flexible battery (130) is electrically connected to the temperature sensor (140), An output of the temperature sensor (140) is coupled to an input of the wireless communication module (120), and the temperature sensor (140) and the wireless communication module (120) are mounted On the printed circuit (110), the printed circuit (110), the temperature sensor, and the flexible battery are packaged in an encapsulating material (150, 160).

Optionally, the flexible battery (130) is a printed battery, the printed battery is elongated, and the electrodes (1301, 1302) of the printed battery are located at both ends of the long side of the printed battery.

Optionally, the printed battery (130) includes a first sub-cell (1305) and a second sub-cell (1306), the first sub-cell (1306) is provided with one end of the positive pole and the second sub-cell (1306) Providing one end of the negative electrode adjacently disposed, and an intermediate printed one electrode (1303) electrically connecting the positive electrode of the first sub-cell and the negative electrode of the second sub-cell;

The negative electrode of the first sub-cell (1305) is the negative electrode of the printed battery, and the positive electrode of the second sub-cell (1306) is the positive electrode of the printed battery.

Optionally, the electrode is made by printing a conductive silver paste.

Optionally, the wireless communication module (120) includes a Bluetooth module.

Optionally, the Bluetooth module includes:

a radio frequency transceiver for modulating data to be transmitted and demodulating the received data;

The baseband controller is configured to encode the baseband data to generate the data to be sent;

A microcontroller for executing instructions.

Optionally, the body temperature measuring device further includes an antenna (125), a matching circuit, a signal output end of the Bluetooth module is coupled to the matching circuit, and the matching circuit is coupled to the antenna (125).

Optionally, the body temperature measuring device further includes a switch (115), the switch includes a conductive adhesive (1151), and the switch (115) communicates or disconnects the flexible battery (130) through the conductive adhesive (1151) And a loop between the load of the flexible battery (130).

Optionally, when the conductive paste is removed, a loop between the flexible battery (130) and the load is in communication.

Optionally, the switch (115) further includes a resistor (1152) and an N-type field effect transistor (1153);

One end of the resistor (1152) and the positive electrode of the flexible battery (130) and the current of the load Connected to the inflow terminal, the other end of the resistor (1152) is connected to the gate of the N-type field effect transistor (1153);

One end of the conductive paste (1151) is connected to the gate of the N-type field effect transistor (1153), the other end of the conductive paste is opposite to the negative electrode of the flexible battery (130) and the N-type field effect transistor Source connection of (1153);

The drain of the N-type field effect transistor (1153) is connected to the current outflow terminal of the load.

Optionally, the switch (115) further includes a resistor (1152) and a P-type field effect transistor (1154);

One end of the conductive paste (1151) is connected to a positive electrode of the flexible battery (130) and a source of the P-type field effect transistor (1154), and the other end of the conductive paste (1151) and the P-type a gate connection of a field effect transistor (1154);

One end of the resistor (1152) is connected to the gate of the P-type field effect transistor (1154), and the other end of the resistor (1152) and the negative electrode of the flexible battery (130) and the current of the load flow out End connection

The drain of the P-type field effect transistor (1154) is connected to the current inflow terminal of the load.

Optionally, the switch (115) further includes a resistor (1152) and a PNP type transistor (1155);

One end of the conductive paste (1151) is connected to the anode of the flexible battery (130) and the emitter of the PNP type transistor (1155), and the other end of the conductive paste (1151) and the PNP type transistor ( Base connection of 1155);

One end of the resistor (1152) is connected to the base of the PNP type transistor (1155), and the other end of the resistor (1152) is connected to the negative pole of the flexible battery (130) and the current outflow end of the load. ;

The collector of the PNP type transistor (1155) is connected to the current inflow end of the load.

Optionally, the switch (115) further includes a resistor (1152) and an NPN type transistor (1156);

One end of the resistor (1152) is connected to the anode of the flexible battery (130) and the current input end of the load, and the other end of the resistor (1152) is connected to the base of the NPN transistor (1156). ;

One end of the conductive paste (1151) is connected to the base of the NPN type transistor (1156), and the other end of the conductive paste (1151) is opposite to the negative electrode of the flexible battery (130) and the NPN type transistor ( 1156) emitter connection;

The collector of the NPN type transistor (1156) is connected to the current outflow end of the load.

Optionally, the conductive paste (1151) is adhered to the printed circuit (110).

Optionally, the switch (115) further includes a film, the film is attached to the conductive adhesive (1151), and the bonding ability between the film and the conductive adhesive (1151) is stronger than the conductive The adhesion of the glue (1151) to the printed circuit (110).

Optionally, the printed circuit (110) is a flexible circuit board.

Optionally, the printed circuit (110), the wireless communication module (120), and the temperature sensor (140) are packaged in a package (310), the package (310) and the flexible battery ( 130) may be separated from each other, and when the package (310) is connected to the flexible battery (130), the package (310) is electrically connected to the flexible battery (130).

Optionally, the package body (310) is connected to the flexible battery (130) through a columnar protrusion, wherein the columnar protrusion is provided with a conductor, and the conductor in the columnar protrusion and the flexible battery (130) The electrode is electrically connected; the flexible battery (130) is provided with a hole into which the columnar protrusion can be inserted and withdrawn from the hole.

The body temperature measuring device provided by the embodiment of the invention has the advantages of light shape, small occupied space, low power consumption, convenient fitting to the human body to directly measure body temperature, and can be connected to an electronic device such as a mobile phone to monitor the body temperature in real time.

DRAWINGS

1 is a perspective view of a body temperature measuring device according to an embodiment of the present invention;

2a is a schematic diagram showing the circuit structure of the body temperature measuring device;

Figure 2b is an exploded view of the body temperature measuring device;

3 is a perspective view of a body temperature measuring device according to another embodiment of the present invention;

4a is a device layout diagram on a flexible circuit board in the body temperature measuring device in one embodiment. intention;

4b is a schematic diagram of a device layout on a flexible circuit board in the body temperature measuring device in another embodiment;

Figure 5 is a circuit diagram of a booster circuit in the body temperature measuring device in one embodiment;

Figure 6a is a schematic structural view of a printed battery in an embodiment;

6b is a schematic view of an effective discharge area of a different electrode arrangement of a printed battery, the dimensions of which are in millimeters, and the dimensions in the figures are merely examples, and the embodiment of the present invention is not limited to the dimensions in the drawings;

6c is a schematic structural view of a printed battery in which two printed sub-cells are connected in series;

7 is a flow chart of a method performed by the body temperature measuring device after the power is turned on in an embodiment;

Figure 8 is a view showing the appearance of a film of the switch of the temperature measuring device in one embodiment;

Figure 9 is a view showing the appearance of a film of the switch of the temperature measuring device in another embodiment;

10-14 are circuit diagrams of the switches of several embodiments of the present invention.

detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a perspective view of a body temperature measuring device according to an embodiment of the present invention. The circuit structure is as shown in FIG. 2a, and includes a flexible battery 130, a temperature sensor 140, a wireless communication module 120, and optionally, a switch 115.

Figure 2b is an exploded view of the body temperature measuring device. As shown in Figure 2b, the present invention provides a body temperature measuring device comprising:

a flexible printed circuit (FPC) 110, a temperature sensor 140, a wireless communication module 120, and a flexible battery 130. The flexible battery 130 is electrically connected to the temperature sensor 140, and an output end of the temperature sensor 140 is An input end of the wireless communication module 120 is coupled, the temperature sensor 140 and the wireless communication module 120 are disposed on the FPC 110, and the FPC 110 and the flexible battery are packaged in an encapsulation material (150, 160) in.

The FPC is a printed circuit carrier formed by printing a wire on a substrate using a soft material such as polyimide or the like as a substrate. Since the substrate is a soft material, the FPC can be bent. Various components are disposed on the FPC 110, including a temperature sensor 140, a wireless communication module 120, and may also include a crystal oscillator, an amplifier, a switch 115, an antenna, etc. 125. In order to ensure the flexibility of the temperature measuring device, the devices on the FPC 110 can be arranged in a uniform arrangement, i.e., the devices are arranged at substantially equal intervals. The FPC 110 can take a variety of shapes, as shown in Figures 4a, 4b, and can be elongate parallel to the long sides of the flexible battery 130, or rectangular parallel to the short sides of the flexible battery 130.

The encapsulating material (150, 160) may be a material such as foam, non-woven fabric or the like. In one embodiment, the encapsulation material specifically includes a first barrier layer 150 and a second barrier layer 160, and the first barrier layer 150 and the second barrier layer 160 may be foam, non-woven fabric, etc. The flexible printed circuit (FPC) 110, the temperature sensor 140, the wireless communication module 120, and the flexible battery 130 are all located between the first barrier layer 150 and the second barrier layer 160. In one embodiment, the outer side of the second barrier layer 160 (ie, the side opposite to the side where the FPC 110 and the like are located) is further affixed with a release paper 180, the second barrier layer 160 The outer side can be attached with adhesive for adhering to the skin, and the release paper 180 can protect the adhesive from preventing the adhesive from weakening in the exposed air. Optionally, a label layer 170 is attached to an outer side of the first shielding layer (ie, a side opposite to a side where the FPC 110 and the like are located), and the label layer 170 may be paper or cloth. For printing product labels.

The temperature sensor 140 can be any existing temperature sensor, such as a temperature sensitive resistor, thermocouple, or the like. In one embodiment, a temperature sensitive resistor is used as the temperature sensor 140. Because the temperature sensitive resistor has low power consumption and small volume, it is suitable for use in the body temperature measuring device provided by the embodiments of the present invention. Of course, other temperature sensors can also be used, which are not limited in the embodiment of the present invention. The temperature sensor may measure the temperature by the heat conducted by the encapsulating material, or may connect a probe that directly contacts the human body through the encapsulating material.

The wireless communication module is configured to transmit a wireless signal, and the input end thereof and the temperature sensor are transmitted The output is coupled to the external temperature, and the temperature data output by the temperature sensor can be transmitted to other devices through a wireless channel, such as a mobile phone, a tablet computer, a wearable device, and the like. The wireless communication module may be a Bluetooth, a near field communication (NFC), a cellular network, a wireless fidelity (WiFi), or a communication module using other wireless communication technologies, which is not limited in this embodiment of the present invention. . In one embodiment, the wireless communication module is a Bluetooth module. Since the Bluetooth technology has the characteristics of low power consumption and long transmission distance, it is very suitable for the solution of the embodiment of the present invention. In another embodiment, the wireless communication module is an NFC communication module. The NFC communication module consumes very little power, but NFC has a shorter transmission distance than Bluetooth technology.

In one embodiment, the Bluetooth module is specifically a Bluetooth chip including a radio frequency transmitter, a micro control unit (MCU), and a baseband controller, such as a DA of Dialog Semiconductor, USA. 14580 chip. The radio frequency transceiver is configured to modulate data to be transmitted and demodulate the received data. The baseband controller is configured to encode baseband data. The MCU can execute instructions to run a simple program. Take DA 14580 as an example. The MCU is ARM architecture and can run at up to 32MHz. The Bluetooth chip can also include a memory for storing data and instructions for execution by the MCU.

The signal output of the Bluetooth module is coupled to a matching circuit that is coupled to the antenna 125. The antenna is configured to radiate a signal output by the Bluetooth module through electromagnetic waves and receive electromagnetic waves from the outside. The matching circuit is used to match the impedance of the antenna radiation. Generally, the impedance needs to be controlled at 50 Ω. The matching circuit can include a resistor, a capacitor, an inductor, or any combination thereof, or can be implemented by a microstrip line. The antenna may be a variety of antennas, preferably a printed antenna. The printed antenna is a conductive pattern printed on a Printed Circuit Board (PCB) or FPC. It has a small footprint and low cost, and is suitable for small and micro electronic devices. The printed antenna has a plurality of structures, such as a PIFA antenna, an inverted F antenna, a dipole antenna, a microstrip antenna, etc., which are not limited in this embodiment of the present invention.

A flexible battery refers to a battery that has good flexibility and can remain curved after bending. Rebound, no rebound tendency and residual force, with a good user experience. There are many types of flexible batteries, and several flexible batteries are described below.

Flexible lithium-ion batteries work in the same way as existing lithium-ion batteries. The flexible lithium-ion battery produced by Taiwan Huineng Company has been able to achieve a battery capacity of 20 mAh. Its positive electrode material generally uses lithium cobaltate and the negative electrode uses graphite. Unlike traditional lithium-ion batteries, this flexible lithium-ion battery uses Lithium-Ceramic as the electrolyte, thus avoiding the leakage of conventional lithium-ion batteries.

Another representative of flexible lithium-ion battery is the flexible thin-film battery produced by Front Edge Technology of the United States. It is made by PVD method. The positive electrode uses 5-50um LiCoO2, the negative electrode uses metallic lithium, and the electrolyte is LiPON. It is an all solid lithium battery. The battery also features ultra-thin (thin to 0.12mm) and is capable of operating at high temperatures (120°C).

Another type of flexible battery is a flexible printed battery. A printed battery is a battery prepared by a printing technique. The characteristics of printed batteries are: soft, lightweight, meager and more environmentally friendly.

At present, the printed battery is mainly a Zn-MnO2 system battery, which can be screen printed on paper, plastic (such as polyethylene terephthalate) by various materials (including carbon paste, zinc, MnO2, ZnCl2 electrolyte, etc.). Obtained on a substrate such as ester, English abbreviation PET), which is a primary battery and is environmentally friendly. Since traditional zinc-manganese batteries are already very mature, the core technology for printing Zn-MnO2 batteries is in the ink portion of the battery material. The voltage of a single Zn-MnO2 battery is 1.5V. The disadvantage is that the energy density is not high (1~3mAh/cm2). The instantaneous current of the printed zinc-manganese battery can be small, and the long-term current is less than 2mA.

In one embodiment of the invention, the aforementioned printed battery is modified. If the wireless communication module uses a Bluetooth communication module or a module that consumes more power, the power supply capability of the battery will be a bottleneck.

In one embodiment, as shown in Figure 6c, the ears (positive and negative electrodes) 1301, 1302 of the printed battery are placed at both ends of the long side of the battery. As shown in Figure 6b, the shaded part of the figure is battery inefficiency. In the discharge part, when the shape of the battery is long, as the battery is narrowed, the electrode is located at one end of the battery, which reduces the effective effective area of the battery, causing a large drop in electrical performance; and the electrodes are located at both ends of the battery to make the battery The effective use area is maximized to ensure the electrical performance of the battery.

In one embodiment, the use of silver paste (positive electrode is an oxidation resistant silver paste) or a metal sheet as an electrode can sufficiently cause a large current to flow out, reduce contact resistance, and facilitate subsequent interconnection with the PCB.

According to the Bluetooth standard, when the Bluetooth module is working, the voltage supplied to the Bluetooth module should reach 3V, whereas a typical printed battery can only provide 1.5V. As shown in FIG. 6a, in one embodiment of the present invention, the printed battery 130 includes a first sub-cell 1305 and a second sub-cell 1306, and the first sub-cell 1306 is provided with one end of the positive pole and the second sub-cell. The battery 1306 is disposed adjacent to one end of the negative electrode, and the intermediate printed one electrode 1303 is electrically connected to the positive electrode of the first sub-cell and the negative electrode of the second sub-cell; the negative electrode of the first sub-cell 1305 is the printed battery The negative electrode, the positive electrode of the second sub-cell 1306 is the positive electrode of the printed battery. Of course, the above two sub-cells are also made using printed battery technology.

In another embodiment, the 3V voltage required by the Bluetooth standard can be implemented by a boost circuit. As shown in FIG. 5, an inductor is connected in series with a positive electrode of the printed battery, one end of the inductor is coupled to a collector of a triode, and an emitter of the triode is coupled to a negative pole of the printed battery, the triode being The emitter is grounded. The collector of the triode is coupled to the anode of the diode, the cathode of the diode is connected in series with a capacitor, one end of the capacitor is grounded, and both ends of the capacitor are output voltage terminals to supply power to the Bluetooth module. In some embodiments, the boost circuit is integrated in the Bluetooth module.

The switching circuit of the temperature measuring device provided by the embodiment of the present invention may adopt a conventional mechanical switch such as a switch of a pot type, or an electronic switch.

In one embodiment, as shown in FIG. 10, the switch 115 may include only the conductive paste 1151, and may also include the conductive paste 1151 and other electronic devices. When the switch 115 only includes the conductive adhesive 1151, the loop between the flexible battery and the circuit system of the flexible battery 130 can be directly connected or disconnected through the conductive adhesive 1151. Specifically, when the conductive adhesive 1151 is completely removed, the flexible battery 130 and the same Load The loop between the circuits (i.e., the circuits powered by the flexible battery 130) is broken, and when the conductive paste 1151 is re-adhered, the loop between the flexible battery 130 and the load is communicated.

In one embodiment of the present invention, the user can implement the on/off of the body temperature measuring device by removing the conductive adhesive 1151 in the switch 115 or pasting the conductive adhesive 31151. Optionally, the body temperature measuring device further includes a film, the film is attached to the conductive adhesive 1151, and the bonding ability between the film and the conductive adhesive 1151 is stronger than the conductive adhesive 1151 and the The bonding ability of the circuit board, so that the user can tear off the conductive film and tear the conductive adhesive, and the size of the film is larger than the size of the conductive adhesive 1151, so that the user removes the conductive adhesive 1151 through the film. Figures 8 and 9 show two different film formats.

Optionally, when the conductive adhesive 1151 is removed, the loop between the flexible battery 130 and the load is connected, which is more in line with the usage habits of most users.

In addition, the switch 115 may include other electronic devices in addition to the conductive paste 1151. In this case, the switch 115115 may have a different structure, as long as the conductive paste 1151 is removed, the circuit between the flexible battery 130 and the load is connected. When the conductive paste 1151 is pasted, the loop between the flexible battery 130 and the load may be disconnected.

In an achievable manner, as shown in FIG. 11, the switch 115 further includes a resistor 1152 and an N-type field effect transistor 1153;

One end of the resistor 1152 is connected to the positive pole of the flexible battery 130 and the current inflow end of the load, and the other end of the resistor 1152 is connected to the gate of the N-type field effect transistor 1153;

One end of the conductive paste 1151 is connected to the gate of the N-type field effect transistor 1153, and the other end of the conductive paste 1151 is connected to the negative electrode of the flexible battery 130 and the source of the N-type field effect transistor 1153. ;

The drain of the N-type field effect transistor 1153 is connected to the current outflow terminal of the load.

In this case, when the user tears the mucous membrane on the surface of the conductive adhesive 1151, the conductive adhesive 1151 is torn off together, and the flexible battery 130 passes through the resistor 1152 to the gate and source of the N-type field effect transistor 1153. The pole charge, when the voltage between the gate and the source of the N-type field effect transistor 1153 is greater than the turn-on voltage of the N-type field effect transistor 1153, the drain and the source of the N-type field effect transistor 1153 are turned on, thereby communicating A loop between the flexible battery 310 and the load.

When the user re-sticks the conductive paste 1151, the conductive paste 1151 connects the negative electrode of the flexible battery 130 and the gate of the N-type field effect transistor 1153 such that the voltage between the gate and the source of the N-type field effect transistor 1153 is less than The off voltage of the N-type field effect transistor 1153, the drain and source of the N-type field effect transistor 1153 are turned off, thereby breaking the loop of the flexible battery 130 and the load.

In an achievable manner, as shown in FIG. 12, the switch interaction device 302 further includes a resistor 1152 and a P-type field effect transistor 1154;

One end of the conductive paste 1151 is connected to the anode of the flexible battery 130 and the source of the P-type field effect transistor 1154, and the other end of the conductive paste 1151 is connected to the gate of the P-type field effect transistor 1154. ;

One end of the resistor 1152 is connected to the gate of the P-type field effect transistor 1154, and the other end of the resistor 1152 is connected to the negative pole of the flexible battery 130 and the current outflow end of the load;

The drain of the P-type field effect transistor 1154 is connected to the current outflow terminal of the load.

In this case, when the user tears the film on the surface of the conductive adhesive 1151, the conductive paste 1151 is torn off together, and the gate of the P-type field effect transistor 1154 is discharged through the resistor 1152, when the gate and source of the P-type field effect transistor 1154. When the voltage between the poles is less than the turn-on voltage, the drain and source of the P-type field effect transistor 1154 are turned on, thereby connecting the loop between the flexible battery 130 and the current output of the load.

When the user re-sticks the conductive paste 1151, the conductive paste 1151 connects the anode of the flexible battery 130 and the gate of the P-type field effect transistor 1154, and the flexible battery 130 charges the gate and the source of the P-type field effect transistor 1154, thereby The voltage between the gate and the source of the P-type field effect transistor 1154 is made larger than the off voltage of the P-type field effect transistor 1154, and the P-type field effect transistor 1154 is made. The drain and source are disconnected, thereby breaking the loop of the flexible battery 130 and the load.

In another achievable manner, as shown in FIG. 13, the switch 115 further includes a resistor 1152 and a PNP type transistor 1155;

One end of the conductive paste 1151 is connected to the anode of the flexible battery 130 and the emitter of the PNP transistor 1155, and the other end of the conductive paste 1151 is connected to the base of the PNP transistor 1155;

One end of the resistor 1152 is connected to the base of the PNP transistor 1155, and the other end of the resistor 1152 is connected to the negative pole of the flexible battery 130 and the current outflow end of the load;

The collector of the PNP type transistor 1155 is connected to the current inflow end of the load.

In this case, when the user tears the film on the surface of the conductive adhesive 1151, the conductive adhesive 1151 is torn off together, and the base of the PNP transistor 1155 is discharged through the resistor 1152 when the base and the emitter of the PNP transistor 1155 are When the voltage is less than the on-voltage, the emitter and collector of the PNP-type transistor 1155 are turned on, thereby connecting the loop between the flexible battery 110 and the load.

When the user re-sticks the conductive adhesive 1151, the conductive paste 1151 connects the positive electrode of the flexible battery 130 and the base of the PNP-type transistor 1155, and the flexible battery 130 charges the base and the emitter of the PNP-type transistor 1155, thereby making the PNP-type triode The voltage between the base and the emitter of 1155 is greater than the cutoff voltage of the PNP type transistor 1155, and the emitter and collector of the PNP type transistor 1155 are disconnected, thereby breaking the loop of the flexible battery 130 and the load.

In another achievable manner, as shown in FIG. 14, the switch 115 further includes a resistor 1152 and an NPN type transistor 1156;

One end of the resistor 1152 is connected to the positive pole of the flexible battery 130 and the current inflow end of the load, and the other end of the resistor 1152 is connected to the base of the NPN transistor 1156;

One end of the conductive paste 1151 is connected to the base of the NPN transistor 1156, and the other end of the conductive paste 1151 is connected to the anode of the flexible battery 130 and the emitter of the NPN transistor 1156;

The collector of the NPN transistor 1156 is connected to the current outflow terminal of the load.

In this case, when the user tears the mu of the surface of the conductive adhesive 1151, the conductive adhesive 1151 is torn off together, and the flexible battery 130 charges the base and the emitter of the NPN transistor 1156 through the resistor 1152, when the base of the NPN transistor 1156 is charged. When the voltage between the pole and the emitter is greater than the turn-on voltage of the NPN transistor 1156, the emitter and collector of the NPN transistor 1156 are turned on, thereby connecting the loop between the flexible battery 130 and the load.

When the user re-sticks the conductive adhesive 1151, the conductive adhesive 1151 connects the negative electrode of the flexible battery 130 and the base of the NPN transistor 1156, so that the voltage between the base and the emitter of the NPN transistor 1156 is smaller than that of the NPN transistor 1156. The cutoff voltage, the collector and emitter of the NPN transistor 1156 are broken, thereby breaking the loop between the flexible battery 130 and the load.

In the above various implementation manners, since the cost of the triode is high relative to the cost of the field effect transistor, the power consumption of the field effect transistor is lower than that of the triode. Therefore, in the switching device interaction apparatus provided by the embodiment of the present invention, Field effect transistor.

The temperature measuring device provided by the embodiment of the invention may be used once, that is, it may be discarded after use, or may be designed to be reusable. Since the flexible battery 130 is generally a disposable battery, the flexible circuit board 110, the wireless communication module 120, the temperature sensor 140, and the like in the temperature measuring device can be separated from the flexible battery 130, as shown in the figure. As shown in FIG. 3, the printed circuit 110, the wireless communication module 120, the temperature sensor 140, and the like are packaged in a package 310. Illustratively, the package 310 may be a button shape as shown in FIG. The outer casing, of course, the package form is just an example, and other package forms can also be used. The package body 310 and the flexible battery 130 may be separated from each other. When the package body 310 is connected to the flexible battery 130, the package body 310 is electrically connected to the flexible battery 130.

As an example, the package body 310 is connected to the flexible battery 130 by a columnar protrusion in which a conductor is disposed, and a conductor in the columnar protrusion is electrically connected to an electrode of the flexible battery 130. As described above, the two electrodes of the flexible battery 130 may be located at both ends thereof, and in order to be electrically connected to the columnar protrusions, the wires and the wires may be drawn from the two electrodes. The columnar protrusions are electrically connected.

The columnar protrusion may be detached from the flexible battery 130. For example, the flexible battery may be provided with a corresponding hole, and the column protrusion may be inserted into the hole and extracted from the hole to implement the package. Connection and separation of the body from the flexible battery.

The above package and the flexible battery can be separated, so that the temperature sensor, the wireless communication module and the like can be reused, which saves the user's use cost.

In the above embodiments of the temperature measuring device, the flexible circuit board 110 can also be replaced by a common printed circuit board (PCB).

For a better understanding of the present invention, an embodiment of the present invention exemplarily shows a wearable device. As shown in FIG. 9, the wearable device includes a non-woven fabric, a paper battery, a circuit system, an FPC, and a switch-operating device. The switch-on interaction device specifically includes an N-type field effect transistor, a conductive paste, a resistor, and a film (not shown, attached to the upper surface of the switching device). The non-woven fabric is placed at the bottom of the device, is the side that is in contact with the user's body, and is used to package the electronic device in the wearable device. The paper battery on the non-woven fabric is used to supply power to the circuit system. The switch-on interaction device with the circuit system is used to control whether the circuit between the paper battery and the circuit system is connected, and the circuit system and the switch machine interaction device are all located on the FPC, and the circuit system and the switch machine interaction device besides the conductive glue The electronics within and between the switchgear interaction devices can be connected by wires within the FPC.

It should be noted that the arrows on the wires for connecting the respective devices or modules in FIGS. 10 to 14 described in the above embodiments represent the directions of the currents when the flexible battery 110 and the load are connected, and none of the figures The circuit board and the film are shown.

In the wearable device provided by the embodiment of the present invention, the switch machine interaction device connects or disconnects the loop between the flexible battery and the load through the conductive glue, and the human eye can actively observe whether the conductive adhesive is removed as a feedback and judge. Whether the device is activated or not, compared with the prior art, the softness of the conductive adhesive can improve the softness of the wearable device and improve the comfort of the wearable device.

The temperature measuring device provided by the embodiment of the invention can establish a wireless connection with other electronic devices such as mobile phones after the power is turned on. Taking the wireless communication module as a specific example of a Bluetooth module, all Bluetooth modules have a globally unique Bluetooth address, and other Bluetooth devices can identify the Bluetooth module through this address. Since the temperature measuring device has a relatively simple structure, it is difficult to set too many buttons or other input devices. In order to avoid erroneous connection of electronic devices such as mobile phones, in one embodiment, the test is printed on the package of the temperature measuring device. The two-dimensional code or bar code of the Bluetooth address of the device, the electronic device such as a mobile phone can obtain the Bluetooth address by scanning the two-dimensional code or the barcode to connect.

As described above, the wireless communication module 120 of the temperature measuring device may include a micro control unit that can execute instructions. As shown in FIG. 7, the temperature measuring device provided by the embodiment of the present invention performs the following process after the power is turned on:

700, the temperature measuring device establishes a Bluetooth connection with the electronic device;

The specific process of the Bluetooth connection is described in detail in the Bluetooth protocol, and will not be described here.

710, the temperature measuring device enters sleep;

In order to save power, the temperature measuring device does not need to perform data transmission and reception operations at all times, and can enter a sleep state according to the Bluetooth protocol. In order to prevent the sleep time of the temperature measuring device from being out of synchronization with the sleep time of the electronic device, the two parties cannot communicate in time, and the sleep time can be negotiated according to the Bluetooth protocol. The related process is detailed in the Bluetooth protocol. Narration.

720: Send temperature measurement data to the electronic device.

The temperature measuring device packages and transmits the measured body temperature data to the electronic device. The temperature measuring device may automatically send the temperature measurement data to the electronic device, or send the temperature measurement data according to the instruction of the electronic device, that is, only send the temperature measurement data when receiving the temperature measurement instruction of the electronic device. .

730, the temperature measuring device determines whether it receives the termination instruction;

The termination instruction is an instruction to terminate the temperature measurement device to execute a process of transmitting data. The termination instruction may be from the electronic device, for example, the mobile phone sends an instruction to the temperature measuring device to terminate the transmission of body temperature data; or may be input from a user to the temperature measuring device, for example, one of the temperature measuring devices may be set Pressing the button, the user presses the button to issue the termination command to the temperature measuring device.

If the temperature measuring device does not receive the termination command, the temperature measuring device continues to sleep, waiting for the next wake-up to send data.

In addition, the respective technologies, systems, apparatuses, methods, and technical features respectively described in the above embodiments may be combined to form other modules and methods without departing from the spirit and principles of the present invention. The devices, the methods, the devices, the systems and the techniques described in the embodiments of the present invention are all within the scope of the present invention.

It will be apparent to those skilled in the art that the various units or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented in program code executable by a computing device such that they may be stored in a storage device for execution by the computing device. Alternatively, they may be fabricated into individual circuit modules, or a plurality of units or steps thereof may be fabricated into a single circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A body temperature measuring device comprising:

a printed circuit (110), a temperature sensor (140), a wireless communication module (120), a flexible battery (130), the flexible battery (130) is electrically connected to the temperature sensor (140), the temperature sensor (140) An output is coupled to an input of the wireless communication module (120), the temperature sensor (140) and the wireless communication module (120) are mounted on the printed circuit (110), the printed circuit (110) The temperature sensor and the flexible battery are packaged in an encapsulating material (150, 160).
The body temperature measuring device according to claim 1, wherein said flexible battery (130) is a printed battery, said printed battery is elongated, and electrodes (1301, 1302) of said printed battery are located in said printing Both ends of the long side of the battery.
A body temperature measuring device according to claim 2, wherein:

The printed battery (130) includes a first sub-cell (1305) and a second sub-cell (1306), the first sub-cell (1306) is provided with one end of the positive electrode and the second sub-cell (1306) is provided with a negative electrode One end is adjacently disposed, and one electrode (1303) is printed in the middle to electrically connect the positive electrode of the first sub-cell and the negative electrode of the second sub-cell;

The negative electrode of the first sub-cell (1305) is the negative electrode of the printed battery, and the positive electrode of the second sub-cell (1306) is the positive electrode of the printed battery.
The body temperature measuring device according to any one of claims 1 to 3, wherein the electrode is made by printing a conductive silver paste.
The body temperature measuring device according to any one of claims 1 to 4, wherein the wireless communication module (120) comprises a Bluetooth module.
The body temperature measuring device according to claim 5, wherein the Bluetooth module comprises:

a radio frequency transceiver for modulating data to be transmitted and demodulating the received data;

The baseband controller is configured to encode the baseband data to generate the data to be sent;

A microcontroller for executing instructions.
The body temperature measuring device according to claim 5 or 6, further comprising an antenna (125) and a matching circuit, wherein a signal output end of the Bluetooth module is coupled to the matching circuit, the matching circuit and the The antenna (125) is coupled.
The body temperature measuring device according to any one of claims 1 to 7, further comprising a switch (115), the switch includes a conductive paste (1151), and the switch (115) communicates or disconnects the load of the flexible battery (130) and the flexible battery (130) through the conductive adhesive (1151) The loop between.
The body temperature measuring device according to claim 8, wherein a loop between the flexible battery (130) and the load is communicated when the conductive paste is removed.
The body temperature measuring device according to claim 9, wherein said switch (115) further comprises a resistor (1152) and an N-type field effect transistor (1153);

One end of the resistor (1152) is connected to the anode of the flexible battery (130) and the current inflow end of the load, and the other end of the resistor (1152) is connected to the gate of the N-type field effect transistor (1153). ;

One end of the conductive paste (1151) is connected to the gate of the N-type field effect transistor (1153), the other end of the conductive paste is opposite to the negative electrode of the flexible battery (130) and the N-type field effect transistor Source connection of (1153);

The drain of the N-type field effect transistor (1153) is connected to the current outflow terminal of the load.
The body temperature measuring device according to claim 9, wherein said switch (115) further comprises a resistor (1152) and a P-type field effect transistor (1154);

One end of the conductive paste (1151) is connected to a positive electrode of the flexible battery (130) and a source of the P-type field effect transistor (1154), and the other end of the conductive paste (1151) and the P-type a gate connection of a field effect transistor (1154);

One end of the resistor (1152) is connected to the gate of the P-type field effect transistor (1154), and the other end of the resistor (1152) and the negative electrode of the flexible battery (130) and the current of the load flow out End connection

The drain of the P-type field effect transistor (1154) is connected to the current inflow terminal of the load.
The body temperature measuring device according to claim 9, wherein said switch (115) further comprises a resistor (1152) and a PNP type transistor (1155);

One end of the conductive paste (1151) is connected to the anode of the flexible battery (130) and the emitter of the PNP type transistor (1155), and the other end of the conductive paste (1151) and the PNP type transistor ( Base connection of 1155);

One end of the resistor (1152) is connected to a base of the PNP type transistor (1155), The other end of the resistor (1152) is connected to a negative pole of the flexible battery (130) and a current outflow end of the load;

The collector of the PNP type transistor (1155) is connected to the current inflow end of the load.
The body temperature measuring device according to claim 9, wherein said switch (115) further comprises a resistor (1152) and an NPN type transistor (1156);

One end of the resistor (1152) is connected to the anode of the flexible battery (130) and the current input end of the load, and the other end of the resistor (1152) is connected to the base of the NPN transistor (1156). ;

One end of the conductive paste (1151) is connected to the base of the NPN type transistor (1156), and the other end of the conductive paste (1151) is opposite to the negative electrode of the flexible battery (130) and the NPN type transistor ( 1156) emitter connection;

The collector of the NPN type transistor (1156) is connected to the current outflow end of the load.
The flexible temperature measuring device according to any one of claims 8 to 13, characterized in that the conductive paste (1151) is adhered to the printed circuit (110).
The body temperature measuring device according to claim 14, wherein the switch (115) further comprises a film, the film is attached to the conductive paste (1151), and the film and the conductive paste (1151) The bonding ability between them is stronger than the adhesion of the conductive paste (1151) to the printed circuit (110).
The body temperature measuring device according to any one of claims 1 to 15, wherein the printed circuit (110) is a flexible circuit board.
The body temperature measuring device according to any one of claims 1 to 16, wherein the printed circuit (110), the wireless communication module (120), and the temperature sensor (140) are packaged in a package (310). The package (310) and the flexible battery (130) may be separated from each other, and when the package (310) is connected to the flexible battery (130), the package (310) and the package The flexible battery (130) is electrically connected.
The body temperature measuring device according to claim 17, wherein the package body (310) is connected to the flexible battery (130) by a columnar protrusion, and the columnar protrusion is provided with a conductor, and the columnar protrusion is The conductor is electrically connected to the electrode of the flexible battery (130); the flexible battery (130) is provided with a hole into which the columnar protrusion can be inserted and withdrawn from the hole.