CN212320916U - Mobile phone with built-in infrared thermometer function - Google Patents
Mobile phone with built-in infrared thermometer function Download PDFInfo
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- CN212320916U CN212320916U CN202021143215.6U CN202021143215U CN212320916U CN 212320916 U CN212320916 U CN 212320916U CN 202021143215 U CN202021143215 U CN 202021143215U CN 212320916 U CN212320916 U CN 212320916U
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Abstract
The utility model discloses a mobile phone of built-in infrared clinical thermometer function, including thermopile sensor, low pass filter, operational amplifier and cell-phone treater, the thermopile sensor includes thermistor and thermopile, and thermistor's one end connecting resistance R, electric capacity C and cell-phone treater's port ADC1, thermistor's other end ground connection, low pass filter's input port 1 is connected to the one end of thermopile, and low pass filter's input port 2 and reference voltage source A are connected to the other end of thermopile, the utility model discloses with thermopile infrared sensor, accurate operational amplifier built-in to the mobile phone shell to utilize the battery of cell-phone, apart from inductor, CPU, ADC, display screen, memory, wireless data, cell-phone APP, realize more accurate ground temperature measurement, body temperature record and relevant data processing.
Description
Technical Field
The utility model relates to a temperature detection technical field specifically is a mobile phone of built-in infrared clinical thermometer function.
Background
The human forehead thermometer and ear thermometer which are composed of a thermopile infrared sensor, a precise operational amplifier, a CPU acquisition and display unit, a battery, a shell and the like are non-contact body temperature measuring methods, the measuring precision can reach plus or minus 0.1 ℃ generally within a certain range, but most of the human forehead thermometers and the ear thermometers exist in independent thermometers, a few thermometers can be connected with a pen computer or a mobile phone through Bluetooth and USB wires, but no device with a temperature detecting function can be implanted in the phone at present, so that the temperature of the current mobile phone cannot be detected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mobile phone of built-in infrared clinical thermometer function to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a mobile phone of built-in infrared clinical thermometer function, includes thermopile sensor, low pass filter, operational amplifier and cell-phone treater, the thermopile sensor includes thermistor and thermopile, thermistor's one end connecting resistance R, electric capacity C and cell-phone treater's port ADC1, thermistor's the other end ground connection, low pass filter's input port 1 is connected to the one end of thermopile, low pass filter's input port 2 and reference voltage source A are connected to the other end of thermopile, reference voltage source B is connected to the other end of resistance R, operational amplifier's input is connected to low pass filter's output, cell-phone treater's port ADC2 is connected to operational amplifier's output.
As a further technical solution of the present invention: the thermistor adopts an NTC thermistor.
As a further technical solution of the present invention: the thermopile is a mobile phone battery.
As a further technical solution of the present invention: and a metal cup is arranged on the thermopile.
As a further technical solution of the present invention: and a lens is arranged at the position of the mobile phone shell corresponding to the thermopile sensor.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses with thermopile infrared sensor, accurate operational amplifier built-in to the mobile phone shell in to utilize battery, distance inductor, CPU, ADC, display screen, memory, wireless data, cell-phone APP of cell-phone, realize more accurate ground temperature measurement, body temperature record and relevant data processing. The utility model is particularly suitable for medical care personnel and people who often pay attention to body temperature changes, such as basal body temperature measurement and automatic ovulation chart drawing; and for example, the body temperature is frequently retested during illness, and the use is very convenient.
Drawings
Fig. 1 is a schematic view of the position of a lens.
Fig. 2 is a schematic view of the position of the metal cup.
Fig. 3 is an overall schematic diagram of the present invention.
Fig. 4 is a schematic diagram of embodiment 2 of the present invention.
Fig. 5 is a flowchart of the present invention.
In the figure: 1-lens, 2-thermopile, 3-metal cup.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, embodiment 1: the utility model provides a mobile phone of built-in infrared clinical thermometer function, includes thermopile sensor, low pass filter, operational amplifier and cell-phone treater, the thermopile sensor includes thermistor and thermopile, thermistor's one end connecting resistance R, electric capacity C and cell-phone treater's port ADC1, thermistor's the other end ground connection, low pass filter's input port 1 is connected to the one end of thermopile, low pass filter's input port 2 and reference voltage source A are connected to the other end of thermopile, reference voltage source B is connected to the other end of resistance R, operational amplifier's input is connected to low pass filter's output, cell-phone treater's port ADC2 is connected to operational amplifier's output. The thermistor adopts an NTC thermistor. The thermopile is a mobile phone battery. The NTC thermistor in the thermopile sensor is used for detecting the ambient temperature of the thermopile, the signal is connected to the mobile phone processor ADC1, and the NTC resistance value can be obtained by calculating the divided voltage, so that the ambient temperature is obtained; the internal thermopile is used for detecting body temperature, is connected with an operational amplifier after low-pass filtering, and the output of the operational amplifier is connected with the ADC2 of the mobile phone processor. When the body temperature is higher than the environment temperature, the thermopile outputs a positive voltage, when the body temperature is lower than the environment temperature, the thermopile outputs a negative voltage, and when the body temperature is the same as the environment temperature, the thermopile outputs a zero voltage; when measuring the body temperature, the mobile phone processor firstly measures the NTC digital ADC1 to obtain the ambient temperature, then obtains the voltage ADC2 after the thermopile signal is amplified, and obtains the body temperature value through calculation, and the whole working process is as shown in fig. 5.
As shown in fig. 2, a metal cup 3 with a large specific heat capacity is mounted on the thermopile 2, and is used for keeping the temperature of the cold end of the thermopile consistent with the ambient temperature air or the temperature of the mobile phone, even if the test is performed by facing a human body or other heat sources, the temperature of the cold end of the thermopile cannot change suddenly due to the existence of the cup in a short time, and only the test stability and precision are increased; another common use of metal cups is to use physical opening angles so that the thermopile has a directivity, for example, pointing to a portion of the area on the forehead of a human body.
As shown in fig. 1, the thermopile 2 is provided with a lens 1 corresponding to the position of the mobile phone shell, which is similar to the lens of the camera of the mobile phone. Because dust exists in the use environment of the mobile phone, and more dust falls on the detection window of the thermopile sensor to influence the measurement accuracy, a lens is necessary to be arranged, the lens can easily penetrate through infrared light waves with the length of 4-14um, and the lens can be glass, glass + coated film or a Fresnel lens.
Example 2 on the basis of example 1, as shown in fig. 4, the thermopile may also be a digital quantity sensor, such as MLX90614 family manufactured by Melexis Microelectronic Integrated Systems. The digital interface can be UART, IIC, serial port, SPI, PWM type, also can be other type digital interface. Because the temperature signal is processed in the digital quantity sensor, the mobile phone CPU only needs to read the value in the sensor to obtain the required environment temperature and body temperature. The power supply to the thermopile is controllable and is only allowed to be energized during use so as not to affect the standby time of the handset.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A mobile phone with built-in infrared thermometer function comprises a thermopile sensor, a low-pass filter, an operational amplifier and a mobile phone processor and is characterized in that the thermopile sensor comprises a thermistor and a thermopile, one end of the thermistor is connected with a resistor R, a capacitor C and a port ADC1 of the mobile phone processor, the other end of the thermistor is grounded, one end of the thermopile is connected with an input port 1 of the low-pass filter, the other end of the thermopile is connected with an input port 2 of the low-pass filter and a reference voltage source A, the other end of the resistor R is connected with a reference voltage source B, the output end of the low-pass filter is connected with the input end of the operational amplifier, and the output end of the operational amplifier is connected with.
2. The mobile phone with built-in infrared thermometer function as claimed in claim 1, wherein said thermistor is an NTC thermistor.
3. The mobile phone with built-in infrared thermometer function as claimed in claim 1, wherein said thermopile provides power for the mobile phone battery.
4. The mobile phone with built-in infrared thermometer function as claimed in claim 1, wherein the thermopile is mounted with a metal cup.
5. A mobile phone with built-in infrared thermometer function as claimed in any one of claims 1-4, wherein the thermopile sensor is provided with a lens at the position corresponding to the mobile phone case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021143215.6U CN212320916U (en) | 2020-06-19 | 2020-06-19 | Mobile phone with built-in infrared thermometer function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021143215.6U CN212320916U (en) | 2020-06-19 | 2020-06-19 | Mobile phone with built-in infrared thermometer function |
Publications (1)
| Publication Number | Publication Date |
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| CN212320916U true CN212320916U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021143215.6U Active CN212320916U (en) | 2020-06-19 | 2020-06-19 | Mobile phone with built-in infrared thermometer function |
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| CN (1) | CN212320916U (en) |
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2020
- 2020-06-19 CN CN202021143215.6U patent/CN212320916U/en active Active
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