CN111968260A - Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement - Google Patents
Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement Download PDFInfo
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- CN111968260A CN111968260A CN202010498118.7A CN202010498118A CN111968260A CN 111968260 A CN111968260 A CN 111968260A CN 202010498118 A CN202010498118 A CN 202010498118A CN 111968260 A CN111968260 A CN 111968260A
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- 238000001931 thermography Methods 0.000 title claims abstract description 42
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 29
- 230000001815 facial effect Effects 0.000 title claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000006870 function Effects 0.000 claims abstract description 21
- 238000004861 thermometry Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000036760 body temperature Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000036541 health Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005541 medical transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010005908 Body temperature conditions Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses an Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement, which comprises a machine body, and a microprocessor and a power supply module which are arranged in the machine body, wherein the front surface of the machine body is provided with a display screen, a function key module, a face recognition module and an infrared thermal imaging rapid thermometer; the power module comprises a power supply, a relay, a first diode, a first resistor, a second resistor, a third resistor, a NOT gate, a first unidirectional thyristor, a first triode, a first capacitor, a second unidirectional thyristor, a fourth resistor, a second diode, a fifth resistor, a third diode, a second triode and a second capacitor. The invention has the functions of face recognition and face thermal imaging temperature measurement, and has the advantages of simpler circuit structure, lower cost, convenient maintenance and higher safety and reliability of the circuit.
Description
Technical Field
The invention relates to the field of attendance management, in particular to an Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement.
Background
The conventional attendance checking sign-in device seen in the market has only a single attendance checking function; the conventional thermometer only has a single body temperature measuring function, is long in use time, and can measure the temperature only by contacting with a body during the measurement process, so that the probability of disease transmission is greatly increased, and the risk of disease transmission is increased. Therefore, a fast and accurate instrument which is free from contact and has the functions of checking attendance and measuring body temperature is urgently needed to make up for the problem. Some attendance machines are also available, which can record the attendance situation of the checked-in person in a short time of checking the attendance, measure the body temperature of the checked-in person by using an infrared instrument under the condition of not contacting the body, automatically generate an attendance report and a body temperature report about the body temperature after the measurement, and enable a manager to quickly know the attendance situation and the body temperature situation of the checked-in person through the attendance report and the body temperature report, and find the attendance situation and control the attendance and the body temperature situation as soon as possible.
Fig. 1 is a schematic circuit diagram of a power supply part of a conventional attendance machine, and it can be seen from fig. 1 that the power supply part of the conventional attendance machine uses a large number of components and parts, and has a complex circuit structure, high hardware cost and inconvenient maintenance. In addition, because the power supply part of the traditional attendance machine lacks corresponding circuit protection functions, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement, which has the functions of face recognition and facial thermal imaging temperature measurement, is simple in circuit structure, low in cost, convenient to maintain, and high in circuit safety and reliability.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method comprises the steps of constructing an Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement, and comprising a machine body, a microprocessor and a power module, wherein the microprocessor and the power module are arranged in the machine body, the front side of the machine body is provided with a display screen, a function key module, a face recognition module and an infrared thermal imaging rapid thermometer, the face recognition module and the infrared thermal imaging rapid thermometer are arranged at the bottom of the machine body, the machine body is provided with an alarm module, a memory is also arranged in the machine body, the memory is connected with a USB interface arranged on the side wall of the machine body, and the microprocessor is respectively connected with the power module, the display screen, the function key module, the face recognition module, the infrared thermal imaging rapid thermometer, the alarm module, the memory and the;
the power module comprises a power supply, a relay, a first diode, a first resistor, a second resistor, a third resistor, a NOT gate, a first unidirectional thyristor, a first triode, a first capacitor, a second unidirectional thyristor, a fourth resistor, a second diode, a fifth resistor, a third diode, a second triode and a second capacitor, wherein the power supply is connected with the cathode of the first diode and one end of the second resistor through contacts of the relay respectively, the anode of the first diode is connected with one end of the third resistor, the input end of the NOT gate and one end of the first resistor respectively, the output end of the NOT gate is connected with the control electrode of the first unidirectional thyristor, the other end of the third resistor is connected with the base electrode of the first triode, and the other end of the second resistor is connected with the anode of the first unidirectional thyristor, the collector electrode of the first triode, the output end of the NOT gate and the second capacitor respectively, One end of the fourth resistor, one end of the fifth resistor, the anode of the third diode and one end of the second capacitor are connected, the emitter of the first triode is connected with the control electrode of the second unidirectional thyristor through the first capacitor, the other end of the first resistor is respectively connected with the cathode of the first unidirectional thyristor and the cathode of the second unidirectional thyristor, the other end of the fourth resistor is connected with the anode of the second diode, the other end of the fifth resistor is respectively connected with the base electrode of the second triode and one end of the load, the emitter of the second triode is connected with the cathode of the third diode, the collector of the second triode is connected with one end of the coil of the relay, and the anode of the second unidirectional thyristor is respectively connected with the cathode of the second diode, the other end of the load and the other end of the second capacitor.
In the Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement, the type of the third diode is S-183T.
In the IOT attendance management terminal based on face recognition and facial thermal imaging temperature measurement, the power module further comprises a sixth resistor, one end of the sixth resistor is connected with the other end of the second resistor, and the other end of the sixth resistor is connected with the collector electrode of the first triode
In the attendance management terminal based on the internet of things and based on the face recognition and the facial thermal imaging temperature measurement, the resistance value of the sixth resistor is 36k omega.
In the attendance management terminal based on the internet of things and based on the face recognition and the facial thermal imaging temperature measurement, the first triode is an NPN type triode.
In the attendance management terminal based on the internet of things and based on the face recognition and the facial thermal imaging temperature measurement, the second triode is a PNP type triode.
The Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement has the following beneficial effects: the power module has less components compared with the power supply part of the traditional attendance machine, and can reduce the hardware cost due to saving some components, in addition, the third diode is used for current limiting protection, so the invention has the functions of face identification and face thermal imaging temperature measurement, and has simpler circuit structure, The cost is lower, convenient maintenance, the security and the reliability of circuit are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a power supply part of a conventional attendance machine;
fig. 2 is a schematic structural diagram of an embodiment of an internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement;
fig. 3 is a structural block diagram of the attendance management terminal of the internet of things based on face recognition and facial thermal imaging temperature measurement in the embodiment;
fig. 4 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement, the structural schematic diagram of the internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement is shown in fig. 2. Fig. 3 is a block diagram of the structure of the internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement in the embodiment. As shown in fig. 2 and 3, the internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement comprises a machine body 1, and a microprocessor 2 and a power module 3 which are arranged in the machine body 1, wherein a display screen 4 is arranged on the front surface of the machine body 1, a function key module 5, a face recognition module 6 and an infrared thermal imaging rapid thermometer 7 are arranged on the bottom of the machine body 1, the machine body 1 is provided with an alarm module 8, a memory 9 is further arranged in the machine body 1, the memory 9 is connected with a USB interface 10 arranged on the side wall of the machine body, the microprocessor 2 is respectively connected with the power module 3, the display screen 4, the function key module 5, the face recognition module 6, the infrared thermal imaging rapid thermometer 7, the alarm module 8, the memory 9 and the USB interface 10.
The microprocessor 2 generates attendance and body temperature forms which can be transmitted to the management center, and an administrator can rapidly and effectively monitor the attendance and body temperature conditions of the checked personnel, so that the health problems of the checked personnel can be conveniently checked in the first time. The alarm module 8 includes a speaker and a flash lamp. The function key module 5 is used when the function is selected and set, such as inputting the information of the checked-in personnel; the result when display screen 4 shows discernment people's face, like by attendance personnel's name and body temperature, display screen 4 can show the name of measurationing, whether the punctuation arrives, whether the body temperature is normal, and the body temperature is then the temperature measurement is passed through smoothly in normal range, if the body temperature is not in normal range, and is on the high side or on the low side, then alarm module 8 has the flash light scintillation and accompanies with the prompt tone.
The data information of the human face temperature measured by the infrared thermal imaging rapid temperature measuring instrument 7 is transmitted to the microprocessor 2, and the microprocessor 2 carries out qualitative and quantitative analysis and processing on the measured temperature data information and compares and matches with health standard temperature data or disease information corresponding to the temperature data in illness built in the microprocessor 2; because the microprocessor 2 is preset with the health standard temperature data and each part of the face of the human body, under the condition that the health standard temperature data is exceeded or is lower than the health standard temperature data, the temperature of different parts of the face is measured by the disease information corresponding to the temperature value of each part, and the diagnosis result is displayed on the display screen 4. Because the human face recognition module 6 and the infrared thermal imaging rapid temperature measuring instrument 7 are arranged, the human face recognition and thermal imaging temperature measuring device has the functions of human face recognition and facial thermal imaging temperature measurement.
Fig. 4 is a schematic circuit diagram of a power module in this embodiment, in fig. 4, the power module 3 includes a power source VCC, a relay, a first diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a not-gate F1, a first unidirectional thyristor U1, a first triode Q1, a first capacitor C1, a second unidirectional thyristor U2, a fourth resistor R4, a second diode D2, a fifth resistor R5, a third diode D3, a second triode Q2, and a second capacitor C2, the power source VCC is connected to a cathode of the first diode D1 and one end of the second resistor R2 through a contact K-1 of the relay, an anode of the first diode D1 is connected to one end of the third resistor R3, an input end of the not-gate F1, and one end of the first resistor R1, an output end of the not-gate F1 is connected to a control terminal of the first unidirectional thyristor U1, and a base of the first resistor R1, the other end of the second resistor R2 is connected to the anode of the first unidirectional thyristor U1, the collector of the first triode Q1, one end of the fourth resistor R4, one end of the fifth resistor R5, the anode of the third diode D3 and one end of the second capacitor C2, the emitter of the first triode Q1 is connected to the control electrode of the second unidirectional thyristor through the first capacitor C1, the other end of the first resistor R1 is connected to the cathode of the first unidirectional thyristor U1 and the cathode of the second unidirectional thyristor U2, the other end of the fourth resistor R4 is connected to the anode of the second diode D2, the other end of the fifth resistor R5 is connected to the base of the second triode Q2 and one end of the load P, the emitter of the second triode Q2 is connected to the cathode of the third diode D3, the collector of the second triode Q2 is connected to one end of the coil K of the relay, and the anode of the second unidirectional thyristor Q2 is connected to the cathode of the second diode D2D 2, The other terminal of the load P is connected to the other terminal of the second capacitor C2.
Compared with the power supply part of the traditional attendance machine in fig. 1, the power supply module 3 has the advantages of fewer used components, simpler circuit structure and convenient maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the third diode D3 is a current limiting diode for current limiting protection of the emitter current of the second transistor Q2. The current limiting protection principle is as follows: when the emitter current of the second triode Q2 is large, the third diode D3 can reduce the emitter current of the second triode Q2 to keep the second triode Q2 in a normal working state, and the elements in the circuit are not burnt out due to too large current, so that the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the model number of the third diode D3 is S-183T. Of course, in practical applications, the third diode D3 may also be another type of diode with the same function.
The working principle of the power module 3 is as follows: because the relay is a normally closed contact relay, the contact K-1 of the relay is normally closed, when the end voltage of the power supply VCC is above a rated value, the first diode D1 is broken down and conducted, so that the first triode Q1 is conducted, the high level output by the emitter of the first triode Q1 provides a trigger level for the control electrode of the second unidirectional thyristor U2 through the first capacitor C1, so that the second unidirectional thyristor U2 is conducted, the input end of the NOT gate F1 is at a high level at the moment, the output end of the NOT gate F1 is at a low level, so that the first unidirectional thyristor U1 is not conducted, and the electric loop between the power supply VCC and the load P is conducted. At this time, the second diode D2 lights up.
When the terminal voltage of the battery E is reduced to be below a rated value, the first diode D1 is cut off, the first triode Q1 is reversely biased to be cut off, the input end of the NOT gate F1 is converted into high level, the first unidirectional thyristor U1 is conducted, the second unidirectional thyristor U2 is cut off due to the fact that reverse voltage is instantly applied to the cathode, and a power supply path between the power supply VCC and the load P is cut off. At the same time, the second diode D1 is extinguished, and the first diode D1 is lit, indicating that the voltage of the input power VCC is insufficient.
When the load P is normal, because the base voltage of the second triode Q2 is high, according to the conduction principle, the second triode Q2 is not conducted at the moment, the relay is not powered on, when the load P is in a short-circuit condition, because the base of the second triode Q2 is short-circuited, the voltage of the second triode Q2 is reduced, the second triode Q2 is accordingly conducted, the relay is powered on, the contact K-1 of the relay is disconnected, the purpose of short-circuit protection is achieved, and the charge and discharge function of the second capacitor C2 can prevent the relay from repeatedly acting.
In this embodiment, the first transistor Q1 is an NPN transistor, and the second transistor Q2 is a PNP transistor. Certainly, in practical applications, the first transistor Q1 may also be a PNP transistor, and the second transistor Q2 may also be an NPN transistor, but the structure of the circuit is also changed accordingly.
The power module 3 further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the other end of the second resistor R2, and the other end of the sixth resistor R6 is connected to the collector of the first transistor Q1. The sixth resistor R6 is a current limiting resistor, and is used for current limiting protection of the collector current of the first transistor Q1. The current limiting protection principle is as follows: when the collector current of the first triode Q1 is large, the sixth resistor R6 can reduce the collector current of the first triode Q1 to keep the first triode Q1 in a normal operating state, so that the device in the circuit is not burned out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 36k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be increased or decreased according to specific situations.
In short, in the embodiment, because the face recognition module 6 and the infrared thermal imaging rapid temperature measuring instrument 7 are arranged, the attendance checking machine has the functions of face recognition and face thermal imaging temperature measurement, compared with a power supply part of a traditional attendance checking machine, the power supply module 3 has fewer used components, a simpler circuit structure and convenience in maintenance, and because some components are saved, the hardware cost can be reduced. In addition, the power module 3 is provided with a current-limiting diode, so that the safety and the reliability of the circuit are high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement is characterized by comprising a machine body, a microprocessor and a power module, wherein the microprocessor and the power module are arranged in the machine body, a display screen, a function key module, a face recognition module and an infrared thermal imaging rapid thermometer are arranged on the front side of the machine body, the face recognition module and the infrared thermal imaging rapid thermometer are arranged at the bottom of the machine body, an alarm module is arranged on the machine body, a memory is also arranged in the machine body, the memory is connected with a USB interface arranged on the side wall of the machine body, and the microprocessor is respectively connected with the power module, the display screen, the function key module, the face recognition module, the infrared thermal imaging rapid thermometer, the alarm module, the memory and the USB interface;
the power module comprises a power supply, a relay, a first diode, a first resistor, a second resistor, a third resistor, a NOT gate, a first unidirectional thyristor, a first triode, a first capacitor, a second unidirectional thyristor, a fourth resistor, a second diode, a fifth resistor, a third diode, a second triode and a second capacitor, wherein the power supply is connected with the cathode of the first diode and one end of the second resistor through contacts of the relay respectively, the anode of the first diode is connected with one end of the third resistor, the input end of the NOT gate and one end of the first resistor respectively, the output end of the NOT gate is connected with the control electrode of the first unidirectional thyristor, the other end of the third resistor is connected with the base electrode of the first triode, and the other end of the second resistor is connected with the anode of the first unidirectional thyristor, the collector electrode of the first triode, the output end of the NOT gate and the second capacitor respectively, One end of the fourth resistor, one end of the fifth resistor, the anode of the third diode and one end of the second capacitor are connected, the emitter of the first triode is connected with the control electrode of the second unidirectional thyristor through the first capacitor, the other end of the first resistor is respectively connected with the cathode of the first unidirectional thyristor and the cathode of the second unidirectional thyristor, the other end of the fourth resistor is connected with the anode of the second diode, the other end of the fifth resistor is respectively connected with the base electrode of the second triode and one end of the load, the emitter of the second triode is connected with the cathode of the third diode, the collector of the second triode is connected with one end of the coil of the relay, and the anode of the second unidirectional thyristor is respectively connected with the cathode of the second diode, the other end of the load and the other end of the second capacitor.
2. The Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement as claimed in claim 1, wherein the type of the third diode is S-183T.
3. The Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement as claimed in claim 2, wherein the power module further comprises a sixth resistor, one end of the sixth resistor is connected with the other end of the second resistor, and the other end of the sixth resistor is connected with a collector of the first triode.
4. The Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement as claimed in claim 3, wherein the resistance of the sixth resistor is 36k Ω.
5. The IOT attendance management terminal based on face recognition and facial thermal imaging thermometry according to any one of claims 1 to 4, wherein the first triode is an NPN type triode.
6. The Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement as claimed in any one of claims 1 to 4, wherein the second triode is a PNP type triode.
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CN202010498118.7A CN111968260A (en) | 2020-06-04 | 2020-06-04 | Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement |
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CN202010498118.7A CN111968260A (en) | 2020-06-04 | 2020-06-04 | Internet of things attendance management terminal based on face recognition and facial thermal imaging temperature measurement |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113517070A (en) * | 2021-08-13 | 2021-10-19 | 广州尚衡信息科技有限公司 | Personnel health record management system |
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CN107147071A (en) * | 2017-04-24 | 2017-09-08 | 宁波敏实汽车零部件技术研发有限公司 | A kind of power supply on vehicle short-circuit protection circuit |
CN208352960U (en) * | 2018-03-22 | 2019-01-08 | 国家电网公司 | A kind of power supply circuit with multiple protection functions |
CN109767508A (en) * | 2017-11-09 | 2019-05-17 | 高刚 | School attendance recorder based on recognition of face tool temperature detecting function |
CN109782801A (en) * | 2019-01-29 | 2019-05-21 | 安徽智训机器人技术有限公司 | Unmanned aerial vehicle control system |
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2020
- 2020-06-04 CN CN202010498118.7A patent/CN111968260A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107147071A (en) * | 2017-04-24 | 2017-09-08 | 宁波敏实汽车零部件技术研发有限公司 | A kind of power supply on vehicle short-circuit protection circuit |
CN109767508A (en) * | 2017-11-09 | 2019-05-17 | 高刚 | School attendance recorder based on recognition of face tool temperature detecting function |
CN208352960U (en) * | 2018-03-22 | 2019-01-08 | 国家电网公司 | A kind of power supply circuit with multiple protection functions |
CN109782801A (en) * | 2019-01-29 | 2019-05-21 | 安徽智训机器人技术有限公司 | Unmanned aerial vehicle control system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113517070A (en) * | 2021-08-13 | 2021-10-19 | 广州尚衡信息科技有限公司 | Personnel health record management system |
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