CN114719992A - Self-correcting temperature measuring device - Google Patents

Self-correcting temperature measuring device Download PDF

Info

Publication number
CN114719992A
CN114719992A CN202210369699.3A CN202210369699A CN114719992A CN 114719992 A CN114719992 A CN 114719992A CN 202210369699 A CN202210369699 A CN 202210369699A CN 114719992 A CN114719992 A CN 114719992A
Authority
CN
China
Prior art keywords
temperature
infrared
gate
temperature measuring
port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210369699.3A
Other languages
Chinese (zh)
Other versions
CN114719992B (en
Inventor
张邺允
李明宇
胡益鸣
齐文乐
张继刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Sanhong Information Technology Co ltd
Original Assignee
Shandong Sanhong Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Sanhong Information Technology Co ltd filed Critical Shandong Sanhong Information Technology Co ltd
Priority to CN202210369699.3A priority Critical patent/CN114719992B/en
Publication of CN114719992A publication Critical patent/CN114719992A/en
Application granted granted Critical
Publication of CN114719992B publication Critical patent/CN114719992B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
    • G01J5/0025—Living bodies

Abstract

The invention provides a self-correcting temperature measuring device which comprises a shell, a controller, a processor, an infrared temperature sensor and an infrared reflector, wherein the shell is provided with a first end and a second end; the shell is provided with a first temperature measuring port, a second temperature measuring port and a temperature measuring switch; the first temperature measuring port is used for measuring the body temperature of a temperature measurer; the second temperature measuring port is used for measuring the body temperature of the measured person, and the infrared reflector is used for reflecting the infrared rays transmitted by the first temperature measuring port to the infrared temperature sensor; the infrared temperature sensor is used for being in time-sharing infrared optical connection with the first temperature measuring port and the second temperature measuring port; the processor is used for calculating a first temperature measured by the first temperature measuring port and a second temperature measured by the second temperature measuring port; the controller is used for comparing the first temperature with the second temperature and controlling the display screen to display correspondingly based on the comparison result. The invention can reduce the measurement error of the temperature measuring device and improve the measurement accuracy.

Description

Self-correcting temperature measuring device
Technical Field
The invention relates to a self-correcting temperature measuring device, in particular to a temperature measuring device which uses the body temperature of a temperature measurer to correct the body temperature of the measured person.
Background
At present, the commonly used temperature measuring devices are generally infrared temperature measuring devices such as ear temperature guns, forehead temperature guns, wrist temperature guns and the like. The infrared temperature measuring device has the advantages of high measuring speed, no direct contact between the device and a measured person, no pollution to the environment and the like, but is extremely easy to influence by external factors (such as light, measuring distance, ambient temperature, external heat sources and the like) to cause inaccurate temperature measurement.
One way to solve this problem is to adopt external black body radiation calibration to solve the problem of inaccurate measurement caused by aging of the thermometer itself, such as the device and method for calibrating an infrared ear thermometer disclosed in chinese patent document CN 106414090 a. The disadvantage of this solution is that it requires calibration measures to be taken with the knowledge that they are not accurate, and that they cannot be provided automatically; but also requires a separate external verification device.
Another way to solve the problem is to use ambient temperature compensation to solve the influence caused by ambient temperature, such as the infrared ear thermometer and its temperature compensation method disclosed in chinese patent document CN 191092A. The disadvantage of this solution is that the distance measurement is affected much by the non-contact measurement, and if the ear thermometer is far from the subject, it will not provide accurate compensation.
Therefore, it is highly desirable to provide a calibration scheme capable of automatically and accurately calibrating the temperature measuring device.
Disclosure of Invention
The invention aims to provide a self-correcting temperature measuring device which can automatically and accurately correct the temperature measuring device.
The technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a self-correcting temperature measuring device which comprises a shell, and a controller, a processor, an infrared temperature sensor and an infrared reflecting mirror which are arranged in the shell, wherein the processor and the infrared temperature sensor are respectively connected with the controller; the shell comprises a head part and a handheld part, and a first temperature measuring port and a temperature measuring switch are arranged on the handheld part; the front end of the head is provided with a second temperature measuring port, the rear end of the head is provided with a display screen, and the display screen is connected with the controller; the first temperature measuring port is used for measuring the body temperature of a temperature measurer holding the temperature measuring device; the second temperature measuring port is used for measuring the body temperature of the measured person, and the infrared reflector is used for reflecting the infrared rays transmitted by the first temperature measuring port to the infrared temperature sensor; the infrared temperature sensor is used for being in time-sharing infrared optical connection with the first temperature measuring port and the second temperature measuring port based on a temperature measuring control instruction sent by the controller so as to respectively obtain first temperature data measured by the first temperature measuring port and second temperature data measured by the second temperature measuring port; the processor is also connected with the infrared temperature sensor and is used for calculating and obtaining a first temperature t1 measured by the first temperature measuring port (after correction) and a second temperature t2 measured by the second temperature measuring port according to temperature data obtained by the infrared temperature sensor based on a temperature calculation instruction sent by the controller; the controller is used for comparing the second temperature with the first temperature and controlling the display screen to display correspondingly based on the comparison result.
The self-correcting temperature measuring device provided by the embodiment of the invention is provided with two temperature measuring ports, one is used for measuring the body temperature of a temperature measurer as a reference temperature, the other is used for measuring the body temperature of the measured person, and whether the body temperature of the measured person is normal or not is judged by comparing the temperature difference value between the two, so that the inaccurate measurement caused by the temperature measuring device or external factors can be avoided.
Drawings
FIG. 1 is a side view of a self-calibrating temperature measuring device according to an embodiment of the present invention;
FIG. 2 is a front view of a self-calibrating temperature measuring device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an infrared ray propagation path of the self-correcting temperature measuring device according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a pressure sensing control circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a pressure-sensitive sensing control circuit according to another embodiment of the present invention;
fig. 6(a) to 6(c) are schematic structural diagrams of a pressure sensor and an OR gate array, respectively, according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a circuit for simultaneously measuring a first temperature and an ambient temperature according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, the self-correcting temperature measuring device provided by the embodiment of the present invention includes a housing, and a controller (not shown), a processor (not shown), an infrared temperature sensor 5 and an infrared reflector 6 which are arranged inside the housing, where the housing includes a head portion 1 and a handheld portion 2, the front end of the head portion 1 is provided with a second temperature measuring port 7, and the rear end is provided with a display screen 4; the handheld part 2 is provided with a first temperature measuring port 8 and a temperature measuring switch 3; the first temperature measuring port 8 is used for measuring the body temperature of a temperature measurer holding the temperature measuring device, the second temperature measuring port 7 is used for measuring the body temperature of the temperature measurer, and the infrared reflecting mirror 6 is used for reflecting infrared rays transmitted through the first temperature measuring port 8 to the infrared temperature sensor 5; the infrared temperature sensor 5 is in time-sharing sensing connection with the first temperature measuring port 8 and the second temperature measuring port 7, wherein when the temperature measuring switch 3 is in a closed state and the hand-held part 2 is detected to be held by the palm of a temperature measurer, the controller controls the infrared temperature sensor 5 to be in infrared optical connection with the first temperature measuring port 8 so as to acquire first temperature data measured by the first temperature measuring port 8; when the temperature measurement switch 3 is detected to be in an open state, the controller controls the infrared temperature sensor 5 to be in sensing connection with the second temperature measurement port 7 so as to acquire second temperature data measured by the second temperature measurement port 7; the infrared optical and infrared optical operation chip is connected with the infrared temperature sensor 5 and the display screen 4 and is used for calculating and obtaining a second temperature t2 measured by the second temperature measuring port 7 and a first temperature t1 measured by the first temperature measuring port 8 according to measurement data obtained by the infrared temperature sensor; the controller is used for controlling and driving the display of the display screen 4 based on the first temperature t1 and the second temperature t2 obtained by the processor.
According to the present invention, the surface reflective material of the infrared reflecting mirror 6 may be any material that reflects infrared light without substantial absorption, such as copper, etc., as is known in the art.
In the embodiment of the present invention, the processor may be an operation chip having an operation processing function, and is hereinafter referred to as an operation chip. The display screen 4 can be an LED display screen or an OLED display screen, can be of a rectangular structure, and is used for simultaneously displaying a first temperature measured when the first temperature measuring port 8 starts measuring temperature in each temperature detection time interval, namely the body temperature of a temperature measurer when the temperature measurer holds the temperature measuring device for the first time in a certain temperature detection time interval to prepare temperature measurement, and a second temperature measured in real time when the second temperature measuring port 7 measures temperature at each time. The controller may be a device having a control function, such as a single chip, wherein the display of the display screen is controlled and driven based on the first temperature t1 and the second temperature t2 obtained by the processor, and the following embodiments may be included:
the first embodiment:
comparing the first temperature t1 with a preset first temperature threshold value, if the first temperature t1 is greater than the preset temperature threshold value, for example, the temperature indicating that the fever phenomenon may occur due to the body temperature is 37 °, controlling the display screen 4 to display the first temperature t1 in a second color, for example, red, different from the normal display color (for example, the normal display color is the first color, for example, green) of the display screen 4, so as to prompt a thermometer that the measuring device may have inaccuracy.
The second embodiment:
and comparing the second temperature t2 with a preset temperature threshold, and if the second temperature t2 is greater than the preset temperature threshold, controlling the display screen to display the second temperature t2 in a second color, such as red, so as to prompt that the temperature of the tested person is possibly higher.
Third embodiment:
the controller is configured to compare the first temperature t1 with the second temperature t2, and control the display screen to perform corresponding display based on a comparison result, and may specifically include:
(1) controlling the display screen to display the first temperature t1 and the second temperature t2 in a first color, for example, green, if an absolute value | t2-t1| of a difference between the second temperature t2 and the first temperature t1 is less than or equal to a preset temperature difference threshold;
(2) and if the absolute value | t2-t1| of the difference between the second temperature t2 and the first temperature t1 is larger than a preset temperature difference threshold value, controlling the display screen to display the first temperature t1 and the second temperature t2 in a second color different from the first color, for example, red, so as to prompt that the body temperature of the temperature measurer to be measured is possibly higher.
The preset temperature difference threshold is determined according to the distribution of the biological body temperatures of a plurality of persons in a healthy state, which meet the statistical sampling requirement, and is preferably set to be 0.7-1.5 degrees according to the sampling data.
In one embodiment, the three implementations described above are performed independently. In another embodiment, the execution is performed according to the sequence of the first embodiment, the second embodiment and the third embodiment.
The self-correcting temperature measuring device provided by the embodiment of the invention is provided with two temperature measuring ports, namely the second temperature measuring port and the first temperature measuring port, wherein the second temperature measuring port is used for measuring the body temperature of a temperature measurer, the first temperature measuring port is used for measuring the body temperature of the temperature measurer, when temperature measurement is started, the first temperature measuring port is used for measuring the body temperature of the temperature measurer as a reference temperature, then the second temperature measuring port is used for measuring the body temperature of the temperature measurer, and then the temperature measured by the second temperature measuring port each time is compared with the reference temperature measured by the first temperature measuring port to judge whether the body temperature of the temperature measurer is normal or not, so that the measurement error of the temperature measuring device can be reduced, and the measurement accuracy is improved.
In the embodiment of the invention, the head part 1 and the hand-held part 2 can be integrally formed and can be made of waterproof and wear-resistant materials. The hand-held part 2 can be made into a structure suitable for being held by the palm, and preferably, an anti-slip layer can be further arranged on the hand-held part 2 to prevent unstable holding caused by the sweat of the palm.
Further, in the embodiment of the present invention, the infrared reflecting mirror 6 is closely attached to the inner wall of the handheld portion 2 close to the first temperature measuring port 8, so that the reflected light of the infrared light transmitted through the first temperature measuring port 8 is substantially parallel to the inner wall of the handheld portion 2, thereby substantially attaching the infrared light to the inside of the handheld portion 2, and solving the problem of a space for accommodating other components in the handheld portion. In the embodiment of the present invention, the propagation path of the infrared light transmitted through the second temperature measuring port 7 and the first temperature measuring port 8 is shown in fig. 3. As shown in fig. 3, the infrared light transmitted through the first temperature measuring port 8 is reflected by the infrared reflector 6, and then transmitted to the infrared temperature sensor 5 in a state of being substantially parallel to the radial line direction of the inner wall of the handheld portion 2, and the infrared light transmitted through the second temperature measuring port 7 is directly transmitted to the infrared temperature sensor 5.
In the embodiment of the present invention, the position of the temperature measuring switch 3 may be set at a position convenient for the operation of the temperature measurer, for example, at a position where the rear side of the hand-held portion 2 is connected with the head, or at the front side of the hand-held portion 2, and the structure of the temperature measuring switch 3 may be set to an existing structure suitable for the operation of the temperature measurer, and the present invention is not particularly limited.
In the embodiment of the present invention, the second temperature measuring port 7 may be disposed at the center of the front end of the head 1, and may be a circular channel or a rectangular channel; the first temperature measurement port 8 is arranged at a position which is easy to contact with the handheld palm, for example, the side part of the handheld part 2, so that the first temperature measurement port 8 can measure the palm temperature of a temperature measurer, the first temperature measurement port 8 can be a circular channel or a rectangular channel, and preferably, the first temperature measurement port 8 can be arranged to be a circular channel.
Further, in an embodiment of the present invention, the controller may generate a corresponding temperature measurement control command through a pressure sensing control circuit from the first temperature measurement port 8 to the infrared temperature sensor 5 to control the infrared temperature sensor to be in time-sharing sensing connection with the second temperature measurement port 7 and the first temperature measurement port 8.
In this embodiment, the hand-held portion 2 is provided with N pressure sensors SP1，SP2，...，SPNN is 1 or more, preferably 3 or more. Most preferably, N may be 3 or 4, i.e. may comprise 3 or 4 pressure sensors. The N pressure sensors are non-uniformly distributed on the handheld part 2Is a position where the thermometer can easily apply pressure when holding the hand-held portion. In one embodiment, the temperature measuring switch and the N pressure sensors are main components of the pressure sensing control circuit.
Specifically, as shown in fig. 4, the pressure sensing control circuit may include a temperature measurement switch (denoted by symbol B in the figure), pressure sensors, NOT gates, an OR gate array constituted by at least one OR gate, AND an AND gate, wherein the measurement switch 3 is connected to an input terminal of the AND gate (AND gate) through an inverter (NOT gate), the N pressure sensors are connected to an input terminal of the AND gate through the OR gate array, AND an output of the AND gate is a temperature measurement control signal. In this embodiment, the output signal of the measurement switch 3 can be represented by a first signal, wherein the first signal is at a high level 1 when the temperature measurement switch 3 is turned on, and the first signal is at a low level 0 when the temperature measurement switch 3 is turned off. The signal output by the pressure sensor can be represented by a second signal, when the pressure value detected by the pressure sensor is greater than the pressure threshold value P, the second signal is a high level 1, and the handheld part 2 is represented to be gripped by the palm of the temperature measurer by strength, namely the palm is tightly attached to the first temperature measuring port; otherwise, when the pressure value detected by the pressure sensor is smaller than the pressure threshold value P, the second signal is at a low level 0, which indicates that the handheld portion 2 is not gripped by the palm, and that some distance exists between the palm and the first temperature measurement port. The pressure threshold P may be determined experimentally, for example, by randomly selecting a plurality of people, for example, 100 people, meeting the statistical sampling rule, and holding the handheld portion in compliance, so as to obtain 100 groups of pressure values, and using the maximum value of the pressure values in the 100 groups as the pressure threshold P.
Thus, when the temperature measurement switch 3 is turned on, the first signal input to the input end of the NOT gate is at a high level 1, and when the temperature measurement switch 3 is turned off, the first signal input to the input end of the NOT gate is at a low level 0; when at least one of the pressure values detected by the N pressure sensors is greater than the pressure threshold value, that is, at least one second signal is at a high level, the signal input to the input end of the OR gate array is at a high level 1, and when the pressure values detected by the N pressure sensors are less than the pressure threshold value, that is, all the second signals are at a low level 0, the second signal input to the input end of the OR gate array is at a low level 0.
In this embodiment, when the temperature measurement control signal is at low level 0, the pressure sensing control circuit is in an open circuit state, and the controller generates a temperature measurement control command for controlling the infrared temperature sensor 5 to be in infrared optical connection with the second temperature measurement port 7 but not in infrared optical connection with the first temperature measurement port 8, i.e., controls the infrared temperature sensor 5 to receive infrared rays transmitted by the second temperature measurement port 7 but not receive infrared rays transmitted by the first temperature measurement port 8. When the temperature measurement control signal is at a high level 1, the pressure sensing control circuit is in an open circuit state, and the controller generates a temperature measurement control instruction for controlling the infrared temperature sensor 5 to be in infrared optical connection with the first temperature measurement port 8 but not in infrared optical connection with the second temperature measurement port 7, namely, the controller controls the infrared temperature sensor 5 to receive infrared rays transmitted by the first temperature measurement port 8 but not to receive infrared rays transmitted by the second temperature measurement port 7.
Specifically, when the temperature measurement switch 3 is turned on, that is, the first signal is at the high level 1, AND the output signal is at the low level 0 after being processed by the inverter, so that the temperature measurement control signal output by the AND gate is at the low level 0 no matter the output signal of the OR gate array is at the high level 1 OR at the low level 0, AND the first temperature measurement port 8 is not in sensing connection with the infrared temperature sensor 5, so that the temperature measurement device is not affected by the state of the first temperature measurement port 8, AND the infrared temperature sensor 5 can be controlled to be in sensing connection with the second temperature measurement port 7 only to receive the second temperature t 2. That is, as long as the temperature measurement switch 3 is turned on, the temperature measured by the second temperature measurement port is obtained, and the temperature measured by the first temperature measurement port is not obtained.
When the temperature measuring switch 3 is turned off, that is, the first signal is at a low level 0, the output signal is at a high level 1 after being processed by the inverter, so that when the palm of the thermometer holds the hand-held part:
case 1: the handheld part 2 is held by a thermometer with force, namely, a palm is tightly attached to the first temperature measuring port 8, at the moment, at least one second signal is high level 1, and the output of the OR gate array is high level 1;
case 2: the hand-held part 2 is not held by the thermometer with force, that is, the palm is not tightly attached to the first temperature measuring port 8, at this time, all the second signals are low level 0, and the output of the OR gate array is low level 0.
In case 1, both input terminals of the AND gate are at high level 1 (high level 1 output by the NOT gate AND high level 1 output by the OR gate array), so that the output of the AND gate, i.e., the temperature measurement control signal, is at high level 1, so that the infrared temperature sensor 5 is in infrared optical connection with the first temperature measurement port 7. One application scenario of this situation is that when the temperature measurer holds the hand-held part with force, the temperature measuring device automatically measures the palm temperature of the temperature measurer to obtain the first temperature, and when the temperature measurer presses the temperature measuring switch, the body temperature of the person to be measured is measured to obtain the second temperature.
In case 2, one input end of the AND gate is high level 1 (high level 1 output by the NOT gate), AND one input end is low level 0 (low level 0 output by the OR gate array), so that the output of the AND gate, i.e. the temperature measurement control signal, is low level 0, so that the infrared temperature sensor 5 is NOT in sensing connection with the first temperature measurement port 7, AND at this time, because the temperature measurement switch is closed, the infrared temperature sensor is NOT in infrared optical connection with the first temperature measurement port 8.
That is, when the temperature measurement switch 3 is in the off state, only when the temperature measurer grips the hand-held portion, that is, when any one of the pressure values detected by the N pressure sensors is detected to be greater than the pressure threshold value, the infrared temperature sensor 5 is controlled to be in infrared optical connection with the first temperature measurement port 7, so that the measurement of the first temperature t1 is more accurate.
The connection method of the N pressure sensors and the OR array in the present embodiment can be as shown in fig. 6(a) to (c). Fig. 6(a) shows a schematic diagram of 4 pressure sensors connected to the OR array, and fig. 6(b) and 6(c) show a schematic diagram of 3 pressure sensors connected to the OR array. As shown in fig. 6(a), the first pressure sensor SP1 AND the second pressure sensor SP2 are connected to an input terminal of a first OR gate, the third pressure sensor SP AND the fourth pressure sensor SP4 are connected to an input terminal of a second OR gate, output terminals of the first OR gate AND the second OR gate are connected to an input terminal of a third OR gate, respectively, AND an output terminal of the third OR gate is connected to an input terminal of an AND gate. As shown in fig. 6(b), the first pressure sensor SP1 AND the second pressure sensor SP2 are connected to an input terminal of a first OR gate, the third pressure sensor SP3 AND the fixed low level 0 are connected to an input terminal of a second OR gate, output terminals of the first OR gate AND the second OR gate are connected to an input terminal of a third OR gate, respectively, AND an output terminal of the third OR gate is connected to an input terminal of an AND gate. As shown in fig. 6(c), the first pressure sensor SP1 AND the second pressure sensor SP2 are connected to an input terminal of a first OR gate, the third pressure sensor SP3 is connected to an input terminal of a second OR gate, an output terminal of the first OR gate is connected to an input terminal of the second OR gate, AND an output terminal of the second OR gate is connected to an input terminal of the AND gate.
In this embodiment, through set up pressure sensor on handheld portion and constitute pressure sensing control circuit with the temperature measurement switch, infrared temperature sensor and second temperature measurement mouth and the infrared optical connection of first temperature measurement mouth timesharing are controlled through pressure sensing control circuit's output signal, wherein, when the temperature measurement switch is opened, can acquire the second temperature automatically, when the temperature measurement switch closes, only when handheld portion is held tightly hard, just acquire the first temperature, thereby can realize automatic, timesharing and accurately acquire second temperature and first temperature.
Further, in another embodiment of the present invention, the controller may generate a corresponding temperature measurement control command through the pressure-sensitive sensing control circuit from the first temperature measurement port 8 to the infrared temperature sensor 5 to control the infrared temperature sensor to be connected with the second temperature measurement port 7 and the first temperature measurement port 8 in a time-sharing sensing manner, and generate a corresponding warning prompt command to remind that the temperature measurement is inaccurate.
In this embodiment, compared with the previous embodiments, the handheld portion is further provided with a photosensitive sensor SL and a reminder. The photosensitive sensor SL may be disposed at a peripheral position of the first temperature measurement port 8, and is configured to determine whether the hand-held portion 2 is held by a palm of a thermometer based on whether light is sensed, where when the thermometer holds the hand-held portion, the photosensitive sensor SL does not sense light, that is, does not detect light, and the output signal is at a low level of 0, and when the thermometer does not hold the hand-held portion, the photosensitive sensor SL does not sense light, that is, does detect light, and the output signal is at a high level of 0. The reminding device is connected with the controller and used for outputting corresponding reminding information based on the early warning control instruction sent by the controller. The reminder device may be an audible and visual indicator element that may be disposed on the hand-held portion 2 in a location that is readily visible to the thermometer, for example, on the bottom of the hand-held portion 2. The reminding information can be carried out by voice prompt and/or light flashing. The controller generates a corresponding temperature measurement control instruction and an early warning control instruction based on the working state of the temperature measurement switch, the pressure value acquired by the pressure sensor and the light intensity detected by the photosensitive sensor,
specifically, in this embodiment, as shown in fig. 5, the pressure-sensitive sensing control circuit includes a temperature measurement switch, a photosensor, a pressure sensor, a first inverter (first NOT gate), a second inverter (second NOT gate), an OR gate array constituted by at least one OR gate, a first AND gate, a second AND gate, AND a nand gate, the measuring switch 3 is connected with the input end of the first OR gate through a first NOT gate, the N pressure sensors are connected with the input end of the second AND gate AND the input end of the NAND gate (NAND gate) through an OR gate array, the photosensitive sensor SL is respectively connected with the input end of the second AND gate AND the input end of the NAND gate through a second NOT gate, the output end of the second AND gate is connected with the input end of the first AND gate, the output of the first AND gate is a temperature measurement control signal, the output of the second AND gate is a second signal, AND the output of the NAND gate is a fault early warning signal.
In this embodiment, the output signal of the measurement switch 3 can be represented by a first signal, wherein the first signal is at a high level 1 when the temperature measurement switch 3 is turned on, and the first signal is at a low level 0 when the temperature measurement switch 3 is turned off. The signal output by the pressure sensor can be represented by a second signal, when the pressure value detected by the pressure sensor is greater than the pressure threshold value, the second signal is a high level 1, and the handheld part 2 is represented to be gripped by the palm of the temperature measurer by strength, namely the palm is tightly attached to the first temperature measuring port; otherwise, when the pressure value detected by the pressure sensor is smaller than the pressure threshold value, the second signal is at a low level of 0, which indicates that the handheld part 2 is not held by the palm, and a certain distance exists between the palm and the first temperature measuring port. The pressure threshold may be determined experimentally (described later). Thus, when the temperature measurement switch 3 is turned on, the first signal input to the input end of the NOT gate is at a high level 1, and when the temperature measurement switch 3 is turned off, the first signal input to the input end of the NOT gate is at a low level 0; when at least one of the pressure values detected by the N pressure sensors is greater than the pressure threshold value, that is, at least one second signal is at a high level, the signal input to the input end of the OR gate array is at a high level 1, and when the pressure values detected by the N pressure sensors are less than the pressure threshold value, that is, all the second signals are at a low level 0, the second signal input to the input end of the OR gate array is at a low level 0. The output signal of the light sensor SL may be represented by a third signal, which is low 0 when the light sensor SL does not detect light, and 1 otherwise. Thus, (1) when the temperature measurement switch 3 is turned on, the first signal input to the input end of the NOT gate is at a high level 1, and when the temperature measurement switch 3 is turned off, the first signal input to the input end of the NOT gate is at a low level 0. (2) When any one of the pressure values detected by the N pressure sensors is greater than the pressure threshold, the signal input to the input terminal of the OR gate array is at a high level 1, that is, at least one second signal is at a high level 1, AND at this time, the output of the OR gate array, that is, the signal input to the input terminal of the second AND gate is at a high level 1; otherwise, when the pressure values detected by the N pressure sensors are all smaller than the pressure threshold, the signal input to the input end of the OR gate array is at the low level 0, that is, all the second signals are at the low level 0, AND at this time, the output of the OR gate array, that is, the signal input to the input end of the second AND gate is at the low level 0. (3) When the light sensor SL detects light, i.e., the third signal is 1, the signal input to the input terminals of the second AND gate AND the nand gate after passing through the second NOT gate is at a low level of 0, otherwise, the third signal input to the input terminals of the second AND gate AND the nand gate is at a high level of 1.
In this embodiment, when the temperature measurement control signal is at high level 1, the pressure sensitive sensing control circuit is in an open circuit state, and the controller generates a temperature measurement control command for controlling the infrared temperature sensor 5 to be in infrared optical connection with the first temperature measurement port 8 but not in infrared optical connection with the second temperature measurement port, i.e. controls the infrared temperature sensor 5 to receive infrared rays transmitted by the first temperature measurement port 8 but not to receive infrared rays transmitted by the second temperature measurement port 7; when the temperature measurement control signal is low level 0 and the pressure-sensitive sensing control circuit is in an open circuit state, the controller generates a temperature measurement control instruction for controlling the infrared temperature sensor to be optically connected with the second temperature measurement port in the infrared mode but not be optically connected with the first temperature measurement port in the infrared mode, namely, the infrared temperature sensor 5 is controlled to receive infrared rays transmitted by the second temperature measurement port 7 but not receive infrared rays transmitted by the first temperature measurement port 8; when the fault early warning signal received by the controller is high level 1, generating an early warning control instruction for controlling the reminding device to output an early warning signal; and when the fault early warning signal received by the controller is low level 0, the early warning control instruction is not generated, and early warning is not performed.
Specifically, when the temperature measurement switch 3 is turned on, that is, the first signal is at a high level 1, AND after being processed by the first NOT gate, the output signal is at a low level 0, that is, the signal input to the input terminal of the first AND gate is at a low level 0; at this time, if the hand-held portion 2 is held by the thermometer:
in the first case: the handheld part 2 is held by a temperature measurer with force and is not light-tight, namely, a palm is tightly attached to the first temperature measuring port 8, at the moment, at least one second signal is high level 1, the output of the OR gate array is high level 1, and the third signal is low level 0;
in the second case: the handheld part 2 is firmly held by a temperature measurer but leaks light, at the moment, at least one second signal is high level 1, the output of the OR gate array is high level 1, and a third signal is high level 1;
in the third case: the hand-held part 2 is not held by the thermometer with force but is not light-tight, that is, the palm is not in close contact with the first temperature measuring port 8 but is not light-tight, at this time, all the second signals are low level 0, the output of the OR gate array is low level 0, and the third signal is low level 0.
In a fourth case: the hand-held portion 2 is not held by the thermometer with force and leaks light, that is, the palm is not closely attached to the first temperature measurement port 8 and does not leak light, at this time, all the second signals are low level 0, the output of the OR gate array is low level 0, and the third signal is high level 1.
In the first case, both input terminals of the second AND gate are at high level 1 (high level 1 output by the OR gate array AND high level 1 output by the second NOT gate), so that the output of the second AND gate is at high level 1, AND thus, one input terminal of the first AND gate is at high level 1 (high level 1 output by the second AND gate) AND one input terminal thereof is at low level 0 (low level 0 output by the first NOT gate), so that the output of the first AND gate is at low level 0, that is, the temperature measurement control signal is at 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, but in sensing connection with the second temperature measurement port 7. Meanwhile, two input ends of the nand gate are both high level 1 (high level 1 output by the OR gate array and high level 1 output by the second NOT gate), so that the output of the nand gate, namely the fault early warning signal, is 0, and early warning is NOT performed.
In the second case, the two input terminals of the second AND gate are one at high level 1 (high level 1 output by the OR gate array) AND one at low level 0 (low level 0 output by the second NOT gate), so that the output of the second AND gate is also at low level 0, AND thus, the two input terminals of the first AND gate are both at low level 0, so that the output of the first AND gate is at low level 0, that is, the temperature measurement control signal is 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, but in sensing connection with the first temperature measurement port 7. Meanwhile, one of two input ends of the NAND gate is high level 1 (high level 1 output by the OR gate array) and the other is low level 0 (low level 0 output by the second NOT gate), so that the output of the NAND gate, namely, a fault early warning signal is 1, early warning is carried out, and a possible fault of the pressure sensor OR the photosensitive sensor is prompted.
In the third case, one of the two input terminals of the second AND gate is at low level 0 (low level 0 output by the OR gate array) AND the other is at high level 1 (high level 1 output by the second NOT gate), so that the output of the second AND gate is also at low level 0, AND thus, both the two input terminals of the first AND gate are at low level 0, so that the output of the first AND gate is at low level 0, that is, the temperature measurement control signal is at 0, so that the second temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, but in sensing connection with the first temperature measurement port 7. Meanwhile, one of two input ends of the NAND gate is low level 0 (low level 0 output by the OR gate array) and the other is high level 1 (high level 1 output by the second NOT gate), so that the output of the NAND gate, namely the fault early warning signal is 1, the early warning is carried out, and a thermometer is prompted NOT to hold the handheld part tightly.
In the fourth case, both input terminals of the second AND gate are at low level 0 (low level 0 output by the OR gate array AND low level 0 output by the second NOT gate), so that the output of the second AND gate is also at low level 0, AND thus both input terminals of the first AND gate are at low level 0, so that the output of the first AND gate is at low level 0, that is, the temperature measurement control signal is 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, but in sensing connection with the second temperature measurement port 7. Meanwhile, two input ends of the NAND gate are both low level 0 (low level 0 output by the OR gate array and low level 0 output by the second NOT gate), so that the output of the NAND gate, namely the fault early warning signal, is 1, the early warning is carried out, and a thermometer is prompted NOT to hold the handheld part tightly.
That is to say, when temperature measurement switch 3 was in the by the on state, temperature measuring device can not receive the state influence of first temperature measurement mouth 8, can control infrared temperature sensor 5 and only be connected with second temperature measurement mouth 7 sensing, normally receives second temperature t2, as long as temperature measurement switch 3 is opened promptly, will acquire the temperature that second temperature measurement mouth measured, and does not acquire the temperature that first temperature measurement mouth measured. Meanwhile, when the handheld part 2 is not tightly held, the thermometer can be reminded.
When the temperature measurement switch 3 is turned off, that is, the first signal is at a low level 0, the output signal is at a high level 1 after being processed by the inverter, that is, the signal input to the input terminal of the first AND gate is at a high level 1; at this time, if the hand-held portion 2 is held by the thermometer:
case 1: the handheld part 2 is held by a temperature measurer with force and is not light-tight, namely, a palm is tightly attached to the first temperature measuring port 8, at the moment, at least one second signal is high level 1, the output of the OR gate array is high level 1, and the third signal is low level 0;
case 2: the handheld part 2 is firmly held by a temperature measurer but leaks light, at the moment, at least one second signal is high level 1, the output of the OR gate array is high level 1, and a third signal is high level 1;
case 3: the hand-held part 2 is not held by the thermometer with force but is light-tight, i.e. the palm is not closely attached to the first temperature measuring port 8 but is light-tight, at this time, all the second signals are low level 0, the output of the OR gate array is low level 0, and the third signal is low level 0.
Case 4: the hand-held portion 2 is not held by the thermometer with force and leaks light, that is, the palm is not closely attached to the first temperature measurement port 8 and does not leak light, at this time, all the second signals are low level 0, the output of the OR gate array is low level 0, and the third signal is high level 1.
In case 1, both input terminals of the second AND gate are at high level 1 (high level 1 output from the OR gate array AND high level 1 output from the second NOT gate), so that the output of the second AND gate is at high level 1, AND thus both input terminals of the first AND gate are at high level 1 (high level 1 output from the first NOT gate AND high level 1 output from the second AND gate), so that the output of the first AND gate is at high level 1, i.e., the temperature measurement control signal is 1, so that the second temperature measurement port 7 is NOT in sensing connection with the infrared temperature sensor 5, but in sensing connection with the first temperature measurement port 8. Meanwhile, two input ends of the nand gate are both high level 1 (high level 1 output by the OR gate array and high level 1 output by the second NOT gate), so that the output of the nand gate, namely the fault early warning signal, is 0, and early warning is NOT performed.
In case 2, one of the two input terminals of the second AND gate is high level 1 (high level 1 output by the OR gate array), AND the other is low level 0 (low level 0 output by the second NOT gate), so that the output of the second AND gate is also low level 0, AND thus, one input terminal of the first AND gate is high level 1 (high level 1 output by the first NOT gate), AND the other input terminal is low level 0 (low level 0 output by the second AND gate), so that the output of the first AND is low level 0, that is, the temperature measurement control signal is 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, AND at this time, because the temperature measurement switch is closed, it is NOT in sensing connection with the first temperature port 7. Meanwhile, one of two input ends of the NAND gate is high level 1 (high level 1 output by the OR gate array) and the other is low level 0 (low level 0 output by the second NOT gate), so that the output of the NAND gate, namely, a fault early warning signal is 1, early warning is carried out, and a possible fault of the pressure sensor OR the photosensitive sensor is prompted.
In case 3, one of the two input terminals of the second AND gate is at low level 0 (low level 0 output by the OR gate array), AND the other is at high level 1 (high level 1 output by the second NOT gate), so that the output of the second AND gate is at low level 0, thus, one input terminal of the first AND gate is at high level 1 (high level 1 output by the first NOT gate), AND the other input terminal is at low level 0 (low level 0 output by the second AND gate), so that the output of the first AND is at low level 0, that is, the temperature measurement control signal is 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, AND at this time, since the temperature measurement switch is turned off, it is NOT in sensing connection with the first temperature port 7. Meanwhile, one of two input ends of the NAND gate is low level 0 (low level 0 output by the OR gate array) and the other is high level 1 (high level 1 output by the second NOT gate), so that the output of the NAND gate, namely the fault early warning signal is 1, the early warning is carried out, and a thermometer is prompted NOT to hold the handheld part tightly.
In the case of the 4 th, both input terminals of the second AND gate are at the low level 0 (the low level 0 output by the OR gate array AND the low level 0 output by the second NOT gate), so that the output of the second AND gate is also at the low level 0, AND thus, one input terminal of the first AND gate is at the high level 1 (the high level 1 output by the first NOT gate), AND the other input terminal thereof is at the low level 0 (the low level 0 output by the second AND gate), so that the output of the first AND is at the low level 0, that is, the temperature measurement control signal is 0, so that the first temperature measurement port 8 is NOT in sensing connection with the infrared temperature sensor 5, AND at this time, because the temperature measurement switch is closed, it is NOT in sensing connection with the first temperature port 7. Meanwhile, two input ends of the NAND gate are both low level 0 (low level 0 output by the OR gate array and low level 0 output by the second NOT gate), so that the output of the NAND gate, namely the fault early warning signal, is 1, and the early warning is carried out to prompt a thermometer NOT to hold the handheld part tightly.
That is to say, when the temperature measurement switch 3 is turned off, only when it is detected that the handheld portion 2 is not tightly held by the palm of the temperature measurer and is not leak, the infrared temperature sensor 5 is controlled to be in sensing connection with the first temperature measurement port 8, so as to obtain the first temperature, and therefore the measurement of the first temperature t1 is more accurate. In addition, when detecting that the temperature measurer does not hold the handheld part, the early warning reminding can be carried out.
The connection method of the N pressure sensors and the OR array in this embodiment may be the same as that in the previous embodiment, and thus, the detailed description thereof is omitted for avoiding redundancy.
In this embodiment, through set up pressure sensor and photosensitive sensor on handheld portion and constitute pressure sensitive sensing control circuit with the temperature measurement switch, infrared optical connection when infrared temperature sensor and second temperature measurement mouth and first temperature measurement mouth time-sharing is controlled through pressure sensitive sensing control circuit's output signal, wherein, when the temperature measurement switch is opened, can acquire the second temperature automatically, when the temperature measurement switch closes, only when handheld portion is held tightly hard and not leak light, just acquire the first temperature, and can remind when handheld portion is not held tightly, thereby can realize automatic, the time-sharing and accurately acquire second temperature and first temperature.
According to the invention, the infrared temperature sensor 5 is controlled to receive the infrared rays transmitted by the first temperature measuring port and the second temperature measuring port, and any scheme in the prior art can be adopted. However, in the present invention, it is preferable that a first optical path (an optical path between the first temperature measurement port and the infrared temperature sensor) and a second optical path (an optical path between the second temperature measurement port and the infrared temperature sensor) for transmitting infrared rays are respectively provided with a first baffle and a first driving mechanism capable of absorbing infrared rays and a second baffle and a second driving mechanism, and the first driving mechanism and the second driving mechanism are respectively connected to the controller.
Under the condition that a temperature measurement control instruction is generated by a pressure sensing control circuit or a pressure-sensitive sensing control circuit to control the infrared temperature sensor to be in time-sharing infrared optical connection with the first temperature measurement port and the second temperature measurement port, when a temperature measurement control signal received by the controller is at a high level 1, the controller controls the first driving mechanism to drive the first baffle to leave the first light path, and controls the second driving mechanism to drive the second baffle to block the second circuit, so that the infrared temperature sensor is in infrared optical connection with the first temperature measurement port 8 but not in infrared optical connection with the second temperature measurement port 7. When the temperature measurement control signal received by the controller is low level 0, the first driving mechanism is controlled to drive the first baffle to block the first light path, and the second driving mechanism is controlled to drive the second baffle to leave the second circuit, so that the infrared temperature sensor is in infrared optical connection with the second temperature measurement port 7 but not in infrared optical connection with the first temperature measurement port 8.
Further, in an embodiment of the present invention, the controller is further configured to control the processor to correct the first temperature based on the pressure values collected by the pressure sensors, that is, to correct the first temperature t1 according to the pressure values collected by the N pressure sensors SP1-SPN, and the correction can be implemented by processing the first temperature t1 through a computer program executed by an arithmetic chip. Thus, the corrected first temperature can be more accurate, and the judgment of the measured second temperature is more accurate. When the computing chip executes the computer program, the first temperature t1 is corrected according to f (Pi), where Pi is a pressure value collected by the pressure sensor SPi, and the method may include the following steps:
s100, obtaining a maximum value Pmax in all pressure values Pi collected by a pressure sensor;
s110, comparing the maximum value Pmax with a first pressure threshold value P1, and if the Pmax is smaller than the first pressure threshold value P1, indicating that the pressure sensor is in a disconnected state and not performing subsequent processing; otherwise, Pmax > P1, go to step S120.
S120, the maximum value Pmax is compared with the second pressure threshold P2, and if Pmax > the second pressure threshold P2 shows that the hand-held part is completely gripped by the palm of the temperature measurer, namely the palm is closely attached to the first temperature measuring port 8, the first temperature is not corrected. Otherwise, i.e. P1< Xmax < P2, indicating that there is a possibility of a virtual grip, there is some distance between the palm and the first temperature measuring port 8, step S130 is executed.
S130, correcting the first temperature t1 by using the following formula (1):
Figure BDA0003587661810000151
wherein t 1' is the corrected first temperature, t1 is the actually measured temperature of the first temperature measuring port, and Pavg1 is the average value of all pressure values Pi, that is
Figure BDA0003587661810000152
Is the average of all pressure values Pi lower than the first pressure threshold value P1, i.e. the pressure value
Figure BDA0003587661810000153
Pj is the pressure value of Pi lower than the first pressure threshold value P1, and m is the number of pressures of Pi lower than the first pressure threshold value P1. T0, T1 and T2 are reference temperatures measured under the same environment at the time when the mean value of pressure values Pi is 0, P1 and P2, respectively. The reference temperatures T0, T1, and T2 may be obtained according to a test button provided on the temperature measuring device or a commissioning mode started when the temperature measuring device is shipped from the factory. The first pressure threshold P1 and the second pressure threshold P2 may be obtained experimentally. For example, P1 is determined by randomly selecting a number of individuals who meet the statistical sampling criteria, and holding the hand-held portion randomly, respectively, while testing Pmax from 100 sets of SPi. In determining the second pressure threshold P2, the compliant holding hand is tested at Pmax in set 100 SPi, thereby determining P2.
In this embodiment, the controller compares the corrected first temperature with the second temperature, and controls the display screen to display the corrected first temperature and the second temperature based on the comparison result. That is to say, in this embodiment, before the body temperature of the subject is measured, the body temperature of the temperature measurer, that is, the first temperature, may be corrected by using the pressure value acquired by the pressure sensor, so that it is more accurate when determining whether the body temperature of the subject has a fever phenomenon, that is, the temperature measured by the temperature measuring device is more accurate.
Further, in an embodiment of the present invention, it is further determined whether the infrared temperature sensor of the temperature measuring device measures accurately by using the ambient temperature. In this embodiment, the thermometric apparatus further comprises a biometric identification module for distinguishing different thermometer IDs, and the thermometric operation is performed by identifying the thermometer ID by the biometric identification module each time the temperature is measured, and the thermometer ID may correspond to the unique character string of the fingerprint. The biometric module may be disposed on the handheld portion 2, and may be, for example, a fingerprint lock disposed on the housing, and when the temperature measurer does not use the temperature measurer for more than a predetermined time, the temperature measurer may be in a standby state, and the biometric module may be used to identify the ID of the temperature measurer to perform a temperature measuring operation, for example, to re-open the fingerprint lock. The temperature measuring device can also comprise an ambient temperature acquiring device used for acquiring ambient temperature data of the temperature measuring device. The ambient temperature acquisition means may be arranged inside the head 1 and may be, for example, an ambient thermometer, i.e. may be, for example, a resistance thermometer, or an ambient acquisition module. The ambient temperature acquisition module can be used for obtaining the current ambient temperature through communication, for example, in buildings such as office buildings, the ambient temperature acquisition module is in communication connection with the related fixed thermometer, and then the ambient temperature measured by the fixed thermometer is acquired. The environment temperature acquiring device can comprise an environment temperature sensing resistor such as a temperature sensitive resistor, and the acquired temperature data can be sent to the operation chip and processed by the operation chip to obtain the corresponding environment temperature.
In the embodiment of the invention, the temperature measuring device synchronously acquires the ambient temperature t0, the time Z and the thermometer ID when acquiring the first temperature t 1. The controller is used for judging the accuracy of the temperature measuring device based on the environment temperature acquired by the environment acquisition device and the first temperature, and controlling the reminding device to output corresponding reminding information to correct the temperature measuring device when the temperature measuring device is judged to be inaccurate.
Further, in the embodiment of the present invention, the thermometric apparatus further includes a memory for storing the plurality of first temperatures t1 and the corresponding plurality of ambient temperatures and the thermometer ID, i.e. for storing the plurality of acquired t2, t0 and the acquisition time Z.
In this embodiment, the controller may determine the accuracy of the temperature measuring device based on the first temperature and the ambient temperature, and control the reminding device to output corresponding reminding information when determining that the temperature measuring device is inaccurate, which may be implemented by the following first embodiment and second embodiment.
[ first embodiment ] A method for manufacturing a semiconductor device
In this embodiment, the computing chip executes the embedded program to implement the following determination steps:
s200, obtaining Z0To Z0K (t 1) stored in the memory during the + deltaZ period corresponding to the current thermometer ID0，t00)，(t11，t01)(t12，t02)......(t1K，t0K)。Z0For the time when the temperature measurement operation, such as opening of a fingerprint lock, is started using the biometric identification module at the time of the current temperature measurement (t 1)0，t00)，(t11，t01)(t12，t02)......(t1K，t0K) Are respectively represented at Z0To Z0Each of the + deltaZ time periods is a predetermined dynamic time period, preferably, for example, 30 minutes, for thermometry operations using the biometric module, such as the first temperature measured when the fingerprint lock is unlocked and the ambient temperature.
S210, comparing K with a preset time threshold value K0, if K is less than K0, judging not, executing step S220, and if K is more than or equal to K0, indicating that enough temperature is measured in deltaZ time and the sample size is enough, executing step S230; k0 is a preset time threshold value and can be set according to actual conditions.
S220, dynamically updating deltaZ for the use of the next judgment execution process; dynamic update to increase deltaZ, for example, to 45 minutes, but not to exceed an upper limit, for example, 1.5 hours.
S230, sorting the difference values of the K first temperatures and the corresponding environment temperatures, namely t1-t0 from big to small to obtain a temperature difference value group: t10i1，t10i2，....，t10iK. If the ratio of the first difference to the last difference of the set of temperature differences is
Figure BDA0003587661810000171
Within a preset threshold value, judging Z0To Z0K temperature measurement values measured in the deltaZ time period have no noise point, the measurement is accurate, and prompt is not needed. The preset threshold is determined according to the variation range of the body temperature of the human body in the health state within the deltaZ time and the basal body temperature, preferably, the preset threshold is presetThe value of the threshold is within 1.3%. Otherwise, i.e.
Figure BDA0003587661810000172
If the value is larger than the preset threshold, S240 is executed.
S240, if the difference between two adjacent differences in the temperature difference value group is t10ij-t10ij+1Are all at α (t 10)i1-t10iK) Within the range of/K, if no larger jumping point exists, the measured K temperature values are judged to have no noise point, the measurement is accurate, no prompt is needed, alpha is a preset coefficient, and j is more than or equal to 1 and less than or equal to K-1. Otherwise, at least one of the differences between two adjacent differences in the set of temperature differences is greater than α · (t 10)i1-t10iK) and/K, executing S250.
S250, judging that noise points exist in the K measured temperature values and temperature values which are possibly inaccurate to measure exist, and controlling a reminding device to output corresponding reminding information to prompt a temperature measurer.
Further, the temperature measuring device will t1i1，t1i2，....，t1iKTemporarily storing the data in a bidirectional linked list; parallel processing is started from the head to the tail of the linked list and from the tail to the head of the linked list respectively, so that the processing speed can be improved.
[ second embodiment ]
In this embodiment, the computing chip executes the embedded program, and implements the following determination steps:
s300, obtaining Z0To Z0K (t 1) stored in the memory during the + deltaZ period corresponding to the current thermometer ID0，t00)，(t11，t01)(t12，t02)......(t1K，t0K)。Z0For the time when the temperature measurement operation, such as opening of a fingerprint lock, is started using the biometric identification module at the time of the current temperature measurement (t 1)0，t00)，(t11，t01)(t12，t02)......(t1K，t0K) Are respectively shown at Z0To Z0First temperature measured when temperature measurement operation, such as opening of fingerprint lock, is started using biometric identification module for each time period of + deltaZDegree and ambient temperature deltaZ is a preset dynamic period of time, preferably, for example, 30 minutes.
S310, if K < K0, then no judgment is made, deltaZ is dynamically updated, for example, the time is increased to 45 minutes, but the upper limit is not exceeded, for example, 1.5 hours; k0 is a preset time threshold value and can be set according to actual conditions.
S320, if K is larger than or equal to K0, the situation that enough temperature is measured in deltaZ time and the sample size is enough is shown, and S330 is executed.
S330, respectively fitting to obtain two straight lines according to K t1 and time Z and K t0 and time Z, specifically shown in steps S331 and S332. S340 is performed.
S331, obtaining a first line y-K1 x + b1 according to the K t1 and the time Z fitting, so that the sum of K t1 points from the first line is minimum, that is, the sum is
Figure BDA0003587661810000181
Z0，Z1…ZKRepresents K times Z;
and S332, fitting K t0 and time Z to obtain a second straight line y-K2 x + b2, and minimizing the sum of K t0 points from the second straight line, namely
Figure BDA0003587661810000191
Z0，Z1…ZKK times Z are indicated.
S340, if k1/k2 is within the preset threshold (e.g. 3%), i.e. the first straight line and the second straight line are basically parallel lines, consider Z0To Z0And if the temperature measurement value in the deltaZ time period is accurate, otherwise, the measurement may be inaccurate, and the reminding device is controlled to output corresponding reminding information so as to prompt a temperature measurer.
In this embodiment, whether the temperature measurement of the infrared temperature sensor is accurate is judged through the ambient temperature, and the accuracy of the temperature measuring device can be further improved.
In this embodiment, the synchronous acquisition of the first temperature t1 and the ambient temperature t0 can be realized by FIG. 7The synchronization implementation shown is a circuit implementation. As shown in FIG. 7, the synchronization circuit may include a transistor, an ambient temperature sensing resistor (temperature sensitive resistor) and a fixed resistor R0Wherein, the base b of the triode is connected with the temperature measurement control signal output by the pressure sensing control circuit or the pressure sensitive sensing control circuit, the collector c of the triode is connected with the power voltage Vcc, and the emitter e of the triode is connected with the environment temperature sensing resistor and the fixed resistor R0Connected in series and then grounded, an ambient temperature sensing resistor and a fixed resistor R0Connected with the input pin of the operation chip through a wire and outputting the voltage to the input pin of the operation chip
Figure BDA0003587661810000192
When the temperature measurement control signal is 0, the triode is not conducted and has no VRThe output is that when the temperature measurement control signal is 1, the triode is conducted and has VRAnd (6) outputting.
It should be noted that, for the sake of simplicity, some well-known structures, such as a battery, are omitted from the temperature measuring device according to the embodiment of the present invention.
In summary, the automatic correction temperature measuring device provided by the embodiment of the invention is provided with two temperature measuring ports, one is used for measuring the body temperature of the temperature measurer as the reference temperature, and the other is used for measuring the body temperature of the measured person, and whether the body temperature of the measured person is normal or not is judged by comparing the temperature difference between the two, so that the inaccurate measurement caused by the temperature measuring device itself or external factors can be avoided. In addition, through set up pressure sensor or set up pressure sensor and photosensitive sensor simultaneously on handheld portion, can be when measurement switch is in the state of closing, through detecting whether handheld portion is held the acquireing of coming the automatic control thermoscope body temperature by force to can make the measured thermoscope body temperature more accurate, and then make the body temperature judgement to the person of being measured more accurate. And moreover, the acquired temperature of the temperature measurer is corrected by the pressure value acquired by the pressure sensor, and the accuracy of the temperature measuring device is judged by the ambient temperature and the temperature of the temperature measurer, so that the measuring accuracy can be further improved.
The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A self-correcting temperature measuring device is characterized by comprising a shell, and a controller, a processor, an infrared temperature sensor and an infrared reflecting mirror which are arranged in the shell, wherein the processor and the infrared temperature sensor are respectively connected with the controller; the shell comprises a head part and a handheld part, and a first temperature measuring port and a temperature measuring switch are arranged on the handheld part; the front end of the head is provided with a second temperature measuring port, the rear end of the head is provided with a display screen, and the display screen is connected with the controller; the first temperature measuring port is used for measuring the body temperature of a temperature measurer holding the temperature measuring device; the second temperature measuring port is used for measuring the body temperature of a measured person, and the infrared reflector is used for reflecting infrared rays transmitted by the first temperature measuring port to the infrared temperature sensor;
the infrared temperature sensor is used for being in time-sharing infrared optical connection with the first temperature measuring port and the second temperature measuring port based on a temperature measuring control instruction sent by the controller so as to respectively obtain first temperature data measured by the first temperature measuring port and second temperature data measured by the second temperature measuring port;
the processor is also connected with the infrared temperature sensor and is used for calculating and obtaining a first temperature t1 measured by the first temperature measuring port (after correction) and a second temperature t2 measured by the second temperature measuring port according to temperature data obtained by the infrared temperature sensor based on a temperature calculation instruction sent by the controller;
the controller is used for comparing the second temperature with the first temperature and controlling the display screen to display correspondingly based on the comparison result.
2. The self-correcting temperature measuring device according to claim 1, wherein the comparing the second temperature with the first temperature and controlling the display screen to display correspondingly based on the comparison result comprises:
if the absolute value of the difference between the second temperature t2 and the first temperature t1 is less than or equal to a preset temperature difference threshold value, controlling the display screen to display in a first color;
controlling the display screen to display in a second color different from the first color if an absolute value of a difference between the second temperature t2 and the first temperature t1 is greater than a preset temperature difference threshold.
3. The self-correcting thermometry device of claim 2, wherein the controller is further configured to:
comparing the first temperature t1 with a preset temperature threshold, and controlling the display screen to display in a second color if the first temperature t1 is greater than the preset temperature threshold.
4. The self-correcting thermometry device of claim 2, wherein the controller is further configured to:
and comparing the second temperature t2 with a preset temperature threshold, and controlling the display screen to display in a second color if the second temperature t2 is greater than the preset temperature threshold.
5. The self-correcting temperature measuring device according to claim 1, wherein a first light path is formed between the first temperature measuring port and the infrared temperature sensor, and a second light path is formed between the second temperature measuring port and the infrared temperature sensor;
the temperature measuring device further comprises:
a first baffle and a first drive mechanism disposed on the first optical path, an
A second shutter and a second driving mechanism provided on the second optical path,
the first driving mechanism and the second driving mechanism are respectively connected with the controller.
6. The self-correcting temperature measuring device of claim 1, wherein the hand-held portion is further provided with at least one pressure sensor; the controller generates the temperature measurement control instruction based on a pressure sensing control circuit, wherein the pressure sensing control circuit comprises a temperature measurement switch, the pressure sensor, a NOT gate, an OR gate array formed by at least one OR gate AND an AND gate, the temperature measurement switch is connected with the input end of the NOT gate, AND the output end of the NOT gate is connected with one input end of the AND gate; the pressure sensor is connected with an input end of the OR gate array, AND an output end of the OR gate array is connected with the other input end of the AND gate; the output end of the AND gate is connected with the controller AND used for outputting a temperature measurement control signal;
when the temperature measurement control signal received by the controller is high level 1, generating a temperature measurement control instruction for controlling the infrared temperature sensor to be in infrared optical connection with the first temperature measurement port but not in infrared optical connection with the second temperature measurement port; and when the temperature measurement control signal received by the controller is low level 0, generating a temperature measurement control instruction for controlling the infrared temperature sensor to be in infrared optical connection with the second temperature measurement port but not in infrared optical connection with the first temperature measurement port.
7. The self-correcting temperature measuring device according to claim 1, wherein the controller controls the first driving mechanism to drive the first baffle to leave the first optical path and controls the second driving mechanism to drive the second baffle to block the second circuit when the temperature measuring control signal received by the controller is at a high level 1, so that the infrared temperature sensor is optically connected to the first temperature measuring port and not optically connected to the second temperature measuring port;
when the received temperature measurement control signal is low level 0, the controller controls the first driving mechanism to drive the first baffle to block the first light path, and controls the second driving mechanism to drive the second baffle to leave the second circuit, so that the infrared temperature sensor is optically connected with the second temperature measurement infrared light, but not optically connected with the first temperature measurement infrared light.
8. The self-correcting temperature measuring device of claim 6 or 7, wherein three pressure sensors are arranged on the hand-held part.
9. The self-correcting temperature measuring device of claim 6 or 7, wherein four pressure sensors are arranged on the hand-held part.
CN202210369699.3A 2022-04-08 2022-04-08 Self-correcting temperature measuring device Active CN114719992B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210369699.3A CN114719992B (en) 2022-04-08 2022-04-08 Self-correcting temperature measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210369699.3A CN114719992B (en) 2022-04-08 2022-04-08 Self-correcting temperature measuring device

Publications (2)

Publication Number Publication Date
CN114719992A true CN114719992A (en) 2022-07-08
CN114719992B CN114719992B (en) 2022-09-30

Family

ID=82242506

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210369699.3A Active CN114719992B (en) 2022-04-08 2022-04-08 Self-correcting temperature measuring device

Country Status (1)

Country Link
CN (1) CN114719992B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62297727A (en) * 1986-06-17 1987-12-24 Omron Tateisi Electronics Co Electronic thermometer
US20130223472A1 (en) * 2012-02-27 2013-08-29 Cvg Management Corporation Infrared temperature sensor calibration system and method
CN105125181A (en) * 2015-09-23 2015-12-09 广东小天才科技有限公司 Method and device for measuring use's body temperature
CN105232008A (en) * 2015-10-23 2016-01-13 卢振和 Medical auxiliary examination method, device and apparatus by medical infrared thermography for human bodies
CN108088567A (en) * 2017-09-14 2018-05-29 吕旭升 Human body infrared thermal imagery processing method and system
CN110013230A (en) * 2018-01-08 2019-07-16 曹亮 A kind of temperature measuring equipment and method using multiple infrared sensors
CN112504461A (en) * 2020-09-21 2021-03-16 江苏超数信息科技有限公司 Intelligent temperature measurement system and temperature measurement method
CN112834078A (en) * 2020-12-30 2021-05-25 深圳市联影高端医疗装备创新研究院 Body temperature measuring device and method
CN214225943U (en) * 2021-02-09 2021-09-17 山东骏风电子有限公司 Face identification temperature measuring device based on ambient temperature calibration

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62297727A (en) * 1986-06-17 1987-12-24 Omron Tateisi Electronics Co Electronic thermometer
US20130223472A1 (en) * 2012-02-27 2013-08-29 Cvg Management Corporation Infrared temperature sensor calibration system and method
CN105125181A (en) * 2015-09-23 2015-12-09 广东小天才科技有限公司 Method and device for measuring use's body temperature
CN105232008A (en) * 2015-10-23 2016-01-13 卢振和 Medical auxiliary examination method, device and apparatus by medical infrared thermography for human bodies
CN108088567A (en) * 2017-09-14 2018-05-29 吕旭升 Human body infrared thermal imagery processing method and system
CN110013230A (en) * 2018-01-08 2019-07-16 曹亮 A kind of temperature measuring equipment and method using multiple infrared sensors
CN112504461A (en) * 2020-09-21 2021-03-16 江苏超数信息科技有限公司 Intelligent temperature measurement system and temperature measurement method
CN112834078A (en) * 2020-12-30 2021-05-25 深圳市联影高端医疗装备创新研究院 Body temperature measuring device and method
CN214225943U (en) * 2021-02-09 2021-09-17 山东骏风电子有限公司 Face identification temperature measuring device based on ambient temperature calibration

Also Published As

Publication number Publication date
CN114719992B (en) 2022-09-30

Similar Documents

Publication Publication Date Title
US6179785B1 (en) Ambient sensing feature for thermometer recalibration system
EP1857797B1 (en) Radiation thermometer calibration
US6821016B2 (en) Infrared clinical thermometer and temperature state estimation method, information notification method, and measurement operation method thereof
EP0777114B1 (en) Radiation clinical thermometer
CN102203574B (en) Infrared temperature measurement of strip
TWI417528B (en) Method and apparatus for storing vacuum gauge calibration parameters and measurement data on a vacuum gauge structure
US6832989B2 (en) Infrared clinical thermometer
CN217059067U (en) Self-correcting temperature measuring device
JP2012512391A (en) Method and apparatus for calibrating a fall detector
MX2007006004A (en) Thermometer calibration by immersion in non-electrically conductive liquid.
CN111609939B (en) Individual body temperature abnormity screening method, device and equipment
EP1857796A1 (en) Portable test apparatus for radiation-sensing thermometer
CN114719992B (en) Self-correcting temperature measuring device
CN114719990B (en) Temperature measuring device based on pressure correction
CN217059066U (en) Temperature measuring device based on pressure control temperature measurement operation
CN114719991B (en) Temperature measuring device based on ambient temperature correction
CN103090899A (en) Test device and test method for sensor
US11761819B2 (en) Temperature calibration method for ear thermometer with probe cover
KR20110082282A (en) Apparatus and method for detecting core temperature in infrared rays thermometer
KR101098433B1 (en) Apparatus and method for detecting surface temperature in infrared rays thermometer
JP2671946B2 (en) Eardrum temperature measuring device
CN112880838A (en) Infrared body temperature detection method, storage medium and infrared body temperature detection device
US20200278310A1 (en) Method for operating a gas sensor device and gas sensor device
WO2021203466A1 (en) Infrared thermometer and forehead temperature correction and measurement method
KR101945623B1 (en) Physical condition measuring method using healthcare mirror

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant