CN109935057A - A kind of ornaments anti-losing device - Google Patents
A kind of ornaments anti-losing device Download PDFInfo
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- CN109935057A CN109935057A CN201910319999.9A CN201910319999A CN109935057A CN 109935057 A CN109935057 A CN 109935057A CN 201910319999 A CN201910319999 A CN 201910319999A CN 109935057 A CN109935057 A CN 109935057A
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Abstract
The present invention provides a kind of ornaments anti-losing device, utilize central processing unit, ornaments part, humidity sensor, alignment sensor, distance measuring sensor, human skin side, signal processing circuit, first comparison module, second comparison module, third comparison module and OR circuit test the temperature of the part of ornaments contact human skin, ornaments are tested at a distance from human skin, the location information of ornaments is acquired, if ornaments have left human body, mobile phone alert can be passed through, whether ornaments anti-losing device of the invention leaves human body using three kinds of test method test ornaments, make to test more accurate；When temperature of the ornaments anti-losing device provided by the invention in the part to ornaments contact human skin is tested, signal amplification is successively also carried out to the temperature signal that temperature sensor acquires by signal processing circuit and signal is filtered, substantially increases the precision of temperature test.
Description
Technical field
The present invention relates to intelligence test field more particularly to a kind of ornaments anti-losing devices.
Background technique
Ornaments are generally to decorate human body, it may have the meaning of performance social status, display wealth and identity, ornaments are general
All it is more valuable article, its anti-theft anti-loss is particularly important.
In the prior art, generally the only smart electronics product such as mobile phone can just have anti-lost function, for example, mobile phone is being lost
Location information can be sent to cloud when mistake, so that cellie finds the mobile phone of loss in time.
Due to ornaments when wearing usually with the skin contact of human body, technical staff is different from regard to this of ornaments
The carrying feature of the intellectual products such as other mobile phones provides a kind of ornaments anti-losing device.
Summary of the invention
Therefore, in order to overcome the above problem, the present invention provides a kind of ornaments anti-losing device, utilizes central processing unit, decorations
Product part, humidity sensor, alignment sensor, distance measuring sensor, human skin side, signal processing circuit, the first comparison module,
Second comparison module, third comparison module and OR circuit test the temperature of the part of ornaments contact human skin,
If measuring temperature lower than preset threshold, then it is assumed that ornaments have left human body, then can be mentioned by mobile phone alert, the present invention
The ornaments anti-losing device of confession can also test ornaments at a distance from human skin, if the distance measured is higher than preset threshold,
Then think that ornaments have left human body, then can be by mobile phone alert, ornaments anti-losing device provided by the invention can also be right
The location information of ornaments is acquired, and the information of acquisition is matched with human body position, if inconsistent, then it is assumed that decorations
Product have left human body, can also pass through mobile phone alert, that is to say, that ornaments anti-losing device of the invention utilizes three kinds of surveys
Whether method for testing test ornaments leave human body, therefore test more accurate；Simultaneously as the part of ornaments contact human skin
Temperature is the key parameter tested ornaments and whether leave human body, therefore ornaments anti-losing device provided by the invention is contacted to ornaments
When the temperature of the part of human skin is tested, temperature signal that also temperature sensor is acquired by signal processing circuit according to
Secondary progress signal amplification and signal filtering processing, substantially increase the precision of temperature test, equally also improve test accuracy.
Ornaments anti-losing device provided by the invention includes central processing unit, ornaments part, humidity sensor, orientation sensing
Device, distance measuring sensor, human skin side, signal processing circuit, the first comparison module, the second comparison module, third comparison module
And OR circuit.
Wherein, ornaments part is the part that contact with human skin on ornaments, temperature sensor be set to ornaments part with
Between human skin side, temperature sensor is used to acquire the temperature signal of human skin, and alignment sensor is set to ornaments part
Between human skin side, alignment sensor is used to acquire the location informations of ornaments, distance measuring sensor be set to ornaments part and
Between human skin side, distance measuring sensor is used to acquire the distance signal of ornaments part Yu human skin side.
Wherein, the output end of temperature sensor and the input terminal of signal processing circuit connect, the output of signal processing circuit
End is connect with the input terminal of the first comparison module, and the output end of distance measuring sensor is connect with the input terminal of the second comparison module, fixed
The output end of level sensor is connect with the input terminal of third comparison module, the output end of the first comparison module, the second comparison module
Output end and the output end of third comparison module connect with the input terminal of OR circuit, the output end of OR circuit is in
Entreat the input terminal connection of processing unit, the input terminal of the output end of central processing unit and mobile phone connects, the output end of mobile phone with
The input terminal of third comparison module connects.
Preferably, temperature sensor is used to acquire the temperature signal of human skin, and the temperature signal of acquisition is transmitted
To signal processing circuit, by treated, temperature signal is transmitted to the first comparison module, the first comparison module to signal processing circuit
In be stored with preset temperature threshold, the temperature signal received is compared by the first comparison module with preset temperature threshold, if
The temperature signal that first comparison module receives is less than preset temperature threshold, then the first comparison module exports high level, if first
The temperature signal that comparison module receives is greater than or equal to preset temperature threshold, then the first comparison module exports low level；Ranging
Sensor is used to acquire the distance signal of ornaments part Yu human skin side, distance measuring sensor by the distance signal transmission of acquisition extremely
Second comparison module is stored with pre-determined distance threshold value, the distance signal that the second comparison module will receive in the second comparison module
It is compared with pre-determined distance threshold value, if the distance signal that receives of the second comparison module is greater than pre-determined distance threshold value, second
Comparison module exports high level, if the distance signal that the second comparison module receives is less than or equal to pre-determined distance threshold value, the
Two comparison modules export low level；Alignment sensor is used to acquire the location informations of ornaments, and alignment sensor is by the position of acquisition
Signal is transmitted to third comparison module, and position of human body information is stored in third comparison module, and third comparison module will receive
Location information be compared with position of human body information, if the location information that receives of third comparison module and position of human body information
Inconsistent, then third comparison module exports high level, if location information and position of human body information that third comparison module receives
Unanimously, then third comparison module exports low level.
Preferably, position of human body information is stored in third comparison module, position of human body information is that the position of mobile phone is believed
Its location information is transmitted to third comparison module as position of human body information by breath, mobile phone.
Preferably, the output end of the first comparison module, the output end of the second comparison module and third comparison module
Output end is connect with three input terminals of OR circuit, and the output end of OR circuit and the input terminal of central processing unit connect
Connect, wherein OR circuit to the signal that receives execute or operation after export.
Preferably, if it is high level signal that central processing unit, which receives, central processing unit issues the first control
Signal processed, mobile phone receive alert after first control signal；If it is low level letter that central processing unit, which receives,
Number, then central processing unit issues second control signal, and mobile phone receives after second control signal without movement.
Preferably, temperature sensor is used to acquire the temperature signal of human skin, the output end and letter of temperature sensor
The input terminal connection of number processing circuit, signal processing circuit successively carry out signal amplification and signal filter to the temperature signal received
Wave processing.
Preferably, temperature sensor is used to acquire the temperature signal of human skin, and the temperature signal of acquisition is converted to
Voltage signal V0, and voltage signal V0 is transmitted to signal processing circuit, V1 are by signal processing circuit treated voltage
Signal, signal processing circuit include signal amplification unit and signal filter unit, and the output end and signal of temperature sensor amplify
The input terminal of unit connects, and the output end of signal amplification unit is connect with the input terminal of signal filter unit, signal filter unit
Output end and central processing unit input terminal connect.
Preferably, signal amplification unit includes integrated transporting discharging A1, capacitor C1-C2, triode VT1-VT2 and resistance R1-
The pin 1 of R7, integrated transporting discharging A1 and port 5 are bias pin, and pin 2 is positive input pin, and pin 3 is that reversed input is drawn
Foot, pin 4 are grounding pin, and pin 6 is output pin, and pin 7 is to connect power pins, and pin 8 is empty pin.
Wherein, the output end of temperature sensor is connect with one end of resistance R1, the other end and integrated transporting discharging A1 of resistance R1
Pin 2 connect, the other end of resistance R1 connect with one end of resistance R4, the other end of resistance R4 and the current collection of triode VT1
Pole connection, one end ground connection of resistance R2, the other end of resistance R2 connect with the pin 3 of integrated transporting discharging A1, one end of resistance R3 and
The pin 7 of integrated transporting discharging A1 connects, another termination+15V power supply of resistance R3, hair of the one end of resistance R3 also with triode VT1
Emitter-base bandgap grading connection, one end of capacitor C1 are connect with the pin 6 of integrated transporting discharging A1, and the other end of capacitor C1 and one end of resistance R4 connect
It connects, one end of capacitor C2 is connect with one end of capacitor C1, and the other end of capacitor C2 is connect with the collector of triode VT1, resistance
One end of R5 is connect with one end of capacitor C1, and the other end of resistance R5 is connect with the collector of triode VT1, one end of resistance R6
Ground connection, the other end of resistance R6 are connect with the pin 6 of integrated transporting discharging A1, and one end of resistance R7 is connect with -15V power supply, resistance R7
The other end connect with the pin 4 of integrated transporting discharging A1, the other end of resistance R7 is also connect with the base stage of triode VT2, triode
The collector of VT2 is connect with the collector of triode VT1, and the emitter of triode VT2 is connect with -15V power supply, and capacitor C2's is another
One end is connect with signal filter unit.
Preferably, signal filter unit includes resistance R8-R18, capacitor C3-C8 and integrated transporting discharging A2-A4.
Wherein, the output end of signal amplification unit is connect with one end of capacitor C3, and the other end of capacitor C3 is with resistance R8's
One end connection, the other end of resistance R8 are connect with one end of resistance R9, the other end of resistance R9 and the output end of integrated transporting discharging A2
Connection, the other end of capacitor C3 are also connect with one end of capacitor C4, the other end of capacitor C4 and the homophase input of integrated transporting discharging A2
End connection, one end ground connection of resistance R10, the other end of resistance R10 are connect with the non-inverting input terminal of integrated transporting discharging A2, resistance R12
One end ground connection, the other end of resistance R12 connect with one end of resistance R11, and the other end of resistance R12 is also with integrated transporting discharging A2's
Inverting input terminal connection, the other end of resistance R11 are connect with the output end of integrated transporting discharging A2, the output end and electricity of integrated transporting discharging A2
One end connection of R14 is hindered, the other end of resistance R14 is connect with one end of resistance R15, the other end and integrated transporting discharging of resistance R15
The inverting input terminal of A3 connects, and the other end of resistance R15 is also connect with one end of capacitor C6, one end ground connection of capacitor C5, capacitor
One end of C5 is also connect with the non-inverting input terminal of integrated transporting discharging A3, and the other end of capacitor C5 is connect with one end of resistance R15, resistance
The other end of R14 is also connect with one end of resistance R13, and the other end of resistance R13 is connect with the output end of integrated transporting discharging A3, capacitor
The other end of C6 is connect with the output end of integrated transporting discharging A3, and the output end of integrated transporting discharging A3 is connect with one end of resistance R16, resistance
The other end of R16 is connect with one end of resistance R18, and the other end of resistance R18 is connect with the inverting input terminal of integrated transporting discharging A4, electricity
The other end of resistance R18 also connect with one end of capacitor C7, and one end of capacitor C8 is grounded, one end of capacitor C8 also with integrated transporting discharging A4
Non-inverting input terminal connection, the other end of capacitor C8 connect with one end of resistance R18, the other end of resistance R16 also with resistance R17
One end connection, the other end of resistance R17 connect with the output end of integrated transporting discharging A4, the other end and integrated transporting discharging A4 of capacitor C7
Output end connection, the output end of integrated transporting discharging A4 connect with central processing unit, and treated that voltage is believed by integrated transporting discharging A4 general
Number V1 is transmitted to central processing unit.
Preferably, if it is high level signal that central processing unit, which receives, central processing unit issues the first control
Signal processed, mobile phone receive alert after first control signal, and warning message is the vibration prompt harmony that mobile phone issues
Sound prompt.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) present invention provides a kind of ornaments anti-losing device, is passed using central processing unit, ornaments part, humidity sensor, positioning
Sensor, distance measuring sensor, human skin side, signal processing circuit, the first comparison module, the second comparison module, third compare mould
Block and OR circuit test the temperature of the part of ornaments contact human skin, if measuring temperature is lower than preset threshold,
Then think that ornaments have left human body, then can be by mobile phone alert, ornaments anti-losing device provided by the invention can also be right
Ornaments are tested at a distance from human skin, if the distance measured is higher than preset threshold, then it is assumed that ornaments have left human body, then
The location information of ornaments can also can be acquired by mobile phone alert, ornaments anti-losing device provided by the invention,
And match the information of acquisition with human body position, if inconsistent, then it is assumed that ornaments have left human body, can also pass through hand
Machine alert, that is to say, that whether ornaments anti-losing device of the invention is left using three kinds of test method test ornaments
Human body, therefore test more accurate；Simultaneously as the temperature of the part of ornaments contact human skin is whether test ornaments leave
The key parameter of human body, thus ornaments anti-losing device provided by the invention to ornaments contact human skin part temperature into
When row test, signal amplification is successively also carried out to the temperature signal that temperature sensor acquires by signal processing circuit and signal is filtered
Wave processing, substantially increases the precision of temperature test, equally also improves test accuracy.
(2) a kind of ornaments anti-losing device provided by the invention, inventive point of the invention are also resided in since temperature sensor is adopted
The signal of collection is faint voltage signal, thus signal amplification unit passes through integrated transporting discharging A1, capacitor C1-C2, triode VT1-
VT2 and resistance R1-R7 amplifies processing to the voltage V0 that temperature sensor exports, by integrated transporting discharging A1, capacitor C1-C2, three
The signal amplification unit that pole pipe VT1-VT2 and resistance R1-R7 are constituted only have offset within the drift of 0.2 μ V/ DEG C, 2 μ V,
The noise of 4.7nV in 100pA bias current and the broadband 0.1Hz to 10Hz.Wherein, signal filter unit using resistance R8-R18,
Capacitor C3-C8 and integrated transporting discharging A2-A4 carries out low-pass filtering treatment to by amplified voltage signal, to improve temperature
Spend the precision of detection.
Detailed description of the invention
Fig. 1 is the structure chart of ornaments anti-losing device of the invention；
Fig. 2 is the schematic diagram of ornaments anti-losing device of the invention；
Fig. 3 is the circuit diagram of signal processing circuit of the invention.
Appended drawing reference:
1- central processing unit；2- ornaments part；3- humidity sensor；4- alignment sensor；5- distance measuring sensor；6- human body skin
Skin side；7- signal processing circuit；The first comparison module of 8-；The second comparison module of 9-；10- third comparison module；11- or door electricity
Road；12- mobile phone.
Specific embodiment
Ornaments anti-losing device provided by the invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figs. 1-2, ornaments anti-losing device provided by the invention includes central processing unit 1, ornaments part 2, humidity
Sensor 3, alignment sensor 4, distance measuring sensor 5, human skin side 6, signal processing circuit 7, the first comparison module 8, second
Comparison module 9, third comparison module 10 and OR circuit 11.
Wherein, ornaments part 2 is the part contacted on ornaments with human skin, and temperature sensor 3 is set to ornaments part 2
Between human skin side 6, temperature sensor 3 is used to acquire the temperature signal of human skin, and alignment sensor 4 is set to ornaments
Between part 2 and human skin side 6, alignment sensor 4 is used to acquire the location information of ornaments, and distance measuring sensor 5 is set to decorations
Between product part 2 and human skin side 6, distance measuring sensor 5 is used to acquire the distance signal of ornaments part 2 Yu human skin side 6.
Wherein, the output end of temperature sensor 3 is connect with the input terminal of signal processing circuit 7, signal processing circuit 7 it is defeated
Outlet is connect with the input terminal of the first comparison module 8, and the input terminal of the output end of distance measuring sensor 5 and the second comparison module 9 connects
It connects, the output end of alignment sensor 4 is connect with the input terminal of third comparison module 10, the output end of the first comparison module 8, second
The output end of comparison module 9 and the output end of third comparison module 10 are connect with the input terminal of OR circuit 11 or door electricity
The output end on road 11 is connect with the input terminal of central processing unit 1, the output end of central processing unit 1 and the input terminal of mobile phone 12
Connection, the output end of mobile phone 12 are connect with the input terminal of third comparison module 10.
In above embodiment, using central processing unit 1, ornaments part 2, humidity sensor 3, alignment sensor 4, survey
Away from sensor 5, human skin side 6, signal processing circuit 7, the first comparison module 8, the second comparison module 9, third comparison module
10 and OR circuit 11 temperature of part of ornaments contact human skin is tested, if measuring temperature is lower than default threshold
Value, then it is assumed that ornaments have left human body, then can be by 12 alert of mobile phone, and ornaments anti-losing device provided by the invention is also
Ornaments can be tested at a distance from human skin, if the distance measured is higher than preset threshold, then it is assumed that ornaments have left people
Body, then can by 12 alert of mobile phone, ornaments anti-losing device provided by the invention can also location information to ornaments into
Row acquisition, and the information of acquisition is matched with human body position, if inconsistent, then it is assumed that ornaments have left human body,
Mobile phone alert can be passed through, that is to say, that ornaments anti-losing device of the invention tests ornaments using three kinds of test methods
Human body whether is left, therefore is tested more accurate；Simultaneously as the temperature of the part of ornaments contact human skin is test ornaments
Whether the key parameter of human body is left, therefore ornaments anti-losing device provided by the invention is in the part to ornaments contact human skin
Temperature when being tested, signal is successively also carried out to the temperature signal that temperature sensor 3 acquires by signal processing circuit 7 and is put
The filtering processing of big and signal, substantially increases the precision of temperature test, equally also improves test accuracy.
Wherein, central processing unit 1 selects low-power consumption 8-bit microprocessor Atmega128, and the chip hardware is resourceful,
Have many advantages, such as that low-power consumption, function be more, cheap and powerful, Atmega128 itself is stored with 128K bytes Flash
Device, simultaneous with the eeprom memory of 4K byte, the data of three sensors acquisition are directly deposited in eeprom memory,
The port ADC inside Atmega128 has 8 channels, and the resolution ratio in every channel is 10bit, and input voltage range is 0 ~ 5V, energy
Enough meet the needs of the touring acquisition of monitoring data, while without AD conversion device is separately added, simplifying periphery circuit design, reducing
Cost.
Specifically, temperature sensor 3 is used to acquire the temperature signal of human skin, and the temperature signal of acquisition is transmitted to
Signal processing circuit 7, by treated, temperature signal is transmitted to the first comparison module 8, the first comparison module to signal processing circuit 7
Preset temperature threshold is stored in 8, the temperature signal received is compared by the first comparison module 8 with preset temperature threshold,
If the temperature signal that the first comparison module 8 receives is less than preset temperature threshold, the first comparison module 8 exports high level, if
The temperature signal that first comparison module 8 receives is greater than or equal to preset temperature threshold, then the first comparison module 8 exports low electricity
It is flat；Distance measuring sensor 5 is used to acquire the distance signal of ornaments part 2 Yu human skin side 6, distance measuring sensor 5 by acquisition away from
It is transmitted to the second comparison module 8 from signal, pre-determined distance threshold value is stored in the second comparison module 9, the second comparison module 9 will connect
The distance signal received is compared with pre-determined distance threshold value, is preset if the distance signal that the second comparison module 9 receives is greater than
Distance threshold, then the second comparison module 9 exports high level, if the distance signal that the second comparison module 9 receives is less than or equal to
Pre-determined distance threshold value, then the second comparison module 9 exports low level；Alignment sensor 4 is used to acquire the location information of ornaments, positioning
The position signal of acquisition is transmitted to third comparison module 10 by sensor 4, and position of human body letter is stored in third comparison module 10
Breath, the location information received is compared by third comparison module 10 with position of human body information, if third comparison module 10 connects
The location information received and position of human body information are inconsistent, then third comparison module 10 exports high level, if third comparison module
10 location informations received are consistent with position of human body information, then third comparison module 10 exports low level.
In above embodiment, preset temperature threshold is the temperature value close to body temperature, for example, can be by preset temperature
Threshold value is set as 30 DEG C, and pre-determined distance threshold value is also the selection that those skilled in the art make as the case may be, for example, can
To set 0.05m for pre-determined distance threshold value.
Specifically, position of human body information is stored in third comparison module 10, position of human body information is the position of mobile phone 12
Its location information is transmitted to third comparison module 10 and is used as position of human body information by information, mobile phone 12.
Specifically, the output end and third comparison module 10 of the output end of the first comparison module 8, the second comparison module 9
Output end connect with three input terminals of OR circuit 11, the output end of OR circuit 11 is defeated with central processing unit 1
Enter end connection, wherein OR circuit 11 to the signal that receives execute or operation after export.
Specifically, if it is high level signal that central processing unit 1, which receives, central processing unit 1 issues the first control
Signal processed, mobile phone 12 receive alert after first control signal；If it is low level that central processing unit 1, which receives,
Signal, then central processing unit 1 issues second control signal, and mobile phone 12 receives after second control signal without movement.
Specifically, temperature sensor 3 is used to acquire the temperature signal of human skin, the output end and letter of temperature sensor 3
The input terminal connection of number processing circuit 7, signal processing circuit 7 successively carry out signal amplification and signal to the temperature signal received
Filtering processing.
As shown in figure 3, temperature sensor 3 is used to acquire the temperature signal of human skin, the temperature signal of acquisition is converted
For voltage signal V0, and voltage signal V0 is transmitted to signal processing circuit 7, V1 is that treated by signal processing circuit 7
Voltage signal, signal processing circuit 7 include signal amplification unit and signal filter unit, the output end and letter of temperature sensor 3
The input terminal connection of number amplifying unit, the output end of signal amplification unit are connect with the input terminal of signal filter unit, and signal is filtered
The output end of wave unit is connect with the input terminal of central processing unit 1.
Specifically, signal amplification unit includes integrated transporting discharging A1, capacitor C1-C2, triode VT1-VT2 and resistance R1-R7,
The pin 1 of integrated transporting discharging A1 and port 5 are bias pin, and pin 2 is positive input pin, and pin 3 is reversed input pin, are drawn
Foot 4 is grounding pin, and pin 6 is output pin, and pin 7 is to connect power pins, and pin 8 is empty pin.
Wherein, the output end of temperature sensor 3 is connect with one end of resistance R1, the other end and integrated transporting discharging A1 of resistance R1
Pin 2 connect, the other end of resistance R1 connect with one end of resistance R4, the other end of resistance R4 and the current collection of triode VT1
Pole connection, one end ground connection of resistance R2, the other end of resistance R2 connect with the pin 3 of integrated transporting discharging A1, one end of resistance R3 and
The pin 7 of integrated transporting discharging A1 connects, another termination+15V power supply of resistance R3, hair of the one end of resistance R3 also with triode VT1
Emitter-base bandgap grading connection, one end of capacitor C1 are connect with the pin 6 of integrated transporting discharging A1, and the other end of capacitor C1 and one end of resistance R4 connect
It connects, one end of capacitor C2 is connect with one end of capacitor C1, and the other end of capacitor C2 is connect with the collector of triode VT1, resistance
One end of R5 is connect with one end of capacitor C1, and the other end of resistance R5 is connect with the collector of triode VT1, one end of resistance R6
Ground connection, the other end of resistance R6 are connect with the pin 6 of integrated transporting discharging A1, and one end of resistance R7 is connect with -15V power supply, resistance R7
The other end connect with the pin 4 of integrated transporting discharging A1, the other end of resistance R7 is also connect with the base stage of triode VT2, triode
The collector of VT2 is connect with the collector of triode VT1, and the emitter of triode VT2 is connect with -15V power supply, and capacitor C2's is another
One end is connect with signal filter unit.
Specifically, signal filter unit includes resistance R8-R18, capacitor C3-C8 and integrated transporting discharging A2-A4.
Wherein, the output end of signal amplification unit is connect with one end of capacitor C3, and the other end of capacitor C3 is with resistance R8's
One end connection, the other end of resistance R8 are connect with one end of resistance R9, the other end of resistance R9 and the output end of integrated transporting discharging A2
Connection, the other end of capacitor C3 are also connect with one end of capacitor C4, the other end of capacitor C4 and the homophase input of integrated transporting discharging A2
End connection, one end ground connection of resistance R10, the other end of resistance R10 are connect with the non-inverting input terminal of integrated transporting discharging A2, resistance R12
One end ground connection, the other end of resistance R12 connect with one end of resistance R11, and the other end of resistance R12 is also with integrated transporting discharging A2's
Inverting input terminal connection, the other end of resistance R11 are connect with the output end of integrated transporting discharging A2, the output end and electricity of integrated transporting discharging A2
One end connection of R14 is hindered, the other end of resistance R14 is connect with one end of resistance R15, the other end and integrated transporting discharging of resistance R15
The inverting input terminal of A3 connects, and the other end of resistance R15 is also connect with one end of capacitor C6, one end ground connection of capacitor C5, capacitor
One end of C5 is also connect with the non-inverting input terminal of integrated transporting discharging A3, and the other end of capacitor C5 is connect with one end of resistance R15, resistance
The other end of R14 is also connect with one end of resistance R13, and the other end of resistance R13 is connect with the output end of integrated transporting discharging A3, capacitor
The other end of C6 is connect with the output end of integrated transporting discharging A3, and the output end of integrated transporting discharging A3 is connect with one end of resistance R16, resistance
The other end of R16 is connect with one end of resistance R18, and the other end of resistance R18 is connect with the inverting input terminal of integrated transporting discharging A4, electricity
The other end of resistance R18 also connect with one end of capacitor C7, and one end of capacitor C8 is grounded, one end of capacitor C8 also with integrated transporting discharging A4
Non-inverting input terminal connection, the other end of capacitor C8 connect with one end of resistance R18, the other end of resistance R16 also with resistance R17
One end connection, the other end of resistance R17 connect with the output end of integrated transporting discharging A4, the other end and integrated transporting discharging A4 of capacitor C7
Output end connection, the output end of integrated transporting discharging A4 connect with central processing unit 1, and treated that voltage is believed by integrated transporting discharging A4 general
Number V1 is transmitted to central processing unit 1.
In above embodiment, the noise of signal processing circuit 7 drifts about within 4.7nV as 0.2 μ V/ DEG C, integrated transporting discharging
A1 is UA741C low drifting integrated transporting discharging, and integrated transporting discharging A2-A4 is OPA827 integrated transporting discharging, since the direct current of integrated transporting discharging A1 is inclined
The overall offset that will not influence circuit with drift is moved, so that circuit has extremely low offset and drift.
In signal amplification unit, the resistance value of resistance R1 is 4.7K Ω, and the resistance value of resistance R2 is 4.7K Ω, the resistance of resistance R3
Value is 220 Ω, and resistance R4 is that resistance value is 1K Ω, and resistance R5 is that resistance value is 330 Ω, and resistance R6 is that resistance value is 47 Ω, and resistance R7 is
Resistance value is 220 Ω, and the capacitance of capacitor C1 is 1 μ F, and the capacitance of capacitor C2 is 5 μ F, the model of triode VT1-VT2
2SA524；In signal filter unit, the resistance value of resistance R8 is 2M Ω, and the resistance value of resistance R9 is 7.2M Ω, the resistance value of resistance R10
For 13.63K Ω, the resistance value of resistance R11 is 9.09K Ω, and the resistance value of resistance R12 is 16.1K Ω, and the resistance value of resistance R13 is 1.6M
The resistance value of Ω, resistance R14 are 162K Ω, and the resistance value of resistance R15 is 210K Ω, and the resistance value of resistance R16 is 825K Ω, resistance R17
Resistance value be 825K Ω, the resistance value of resistance R18 is 412K Ω, and the capacitance of capacitor C3 is 1 μ F, and the capacitance of capacitor C4 is 1 μ F,
The capacitance of capacitor C5 is 100nF, and the capacitance of capacitor C6 is 7.5nF, and the capacitance of capacitor C7 is 7.5nF, the electricity of capacitor C8
Capacitance is 100nF.
In signal amplification unit, signal amplification unit is total using the source current excitation mutual symmetry of integrated transporting discharging A1
The exportable power of emitter-base bandgap grading amplifying circuit, signal amplification unit is about 2W.The power consumption very little of integrated transporting discharging A1 itself, power consumption
It is smaller, thus efficiency is higher, when taking several milliamperes of output electric current, source current is generally close with load current.Integrated fortune
The positive and negative power end (pin 7,4) for putting A1 is connected with the base stage of triode VT1 and VT2 respectively, i.e. the power supply electricity of integrated transporting discharging A1
Stream becomes the exciting current of triode VT1 and VT2 base stage.The effect of resistance R6 is to increase three poles to increase source current
The exciting current of pipe VT1 and VT2 base stage.Resistance R5 is current-limiting resistance, plays overcurrent protection to integrated transporting discharging A1.
In signal filter unit, wherein capacitor C3-C4, resistance R8-R12 and integrated transporting discharging A2 one gain of composition are
10 high-pass filter, capacitor C5-C6, resistance R13-R15 and integrated transporting discharging A3 constitute the 10Hz low-pass filter that gain is 10,
Capacitor C7-C8, resistance R16-R18 and integrated transporting discharging A4 constitute the 10Hz low-pass filter that a gain is 1, it and capacitor C5-
C6, resistance R13-R15 are similar with the low-pass filter that integrated transporting discharging A3 is constituted, but its gain is 1.
Since the signal that temperature sensor 3 acquires is faint voltage signal, thus signal amplification unit passes through integrated fortune
It puts the voltage V0 that A1, capacitor C1-C2, triode VT1-VT2 and resistance R1-R7 export temperature sensor 3 and amplifies processing,
There was only 0.2 μ V/ DEG C by the signal amplification unit that integrated transporting discharging A1, capacitor C1-C2, triode VT1-VT2 and resistance R1-R7 are constituted
Drift, the offset within 2 μ V, in 100pA bias current and the broadband 0.1Hz to 10Hz 4.7nV noise.Wherein, signal is filtered
Wave unit carries out low pass to by amplified voltage signal using resistance R8-R18, capacitor C3-C8 and integrated transporting discharging A2-A4
Filtering processing, to improve the precision of temperature detection.
Specifically, if it is high level signal that central processing unit 1, which receives, central processing unit 1 issues the first control
Signal processed, mobile phone 12 receive alert after first control signal, and warning message is the vibration prompt that mobile phone 12 issues
And auditory tone cues.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of ornaments anti-losing device, which is characterized in that the ornaments anti-losing device includes central processing unit (1), ornaments portion
Divide (2), humidity sensor (3), alignment sensor (4), distance measuring sensor (5), human skin side (6), signal processing circuit
(7), the first comparison module (8), the second comparison module (9), third comparison module (10) and OR circuit (11)；
Wherein, the ornaments part (2) is the part contacted on ornaments with the human skin, and the temperature sensor (3) sets
It is placed between the ornaments part (2) and the human skin side (6), the temperature sensor (3) is for acquiring human skin
Temperature signal, the alignment sensor (4) is set between the ornaments part (2) and the human skin side (6), described
Alignment sensor (4) is used to acquire the location informations of ornaments, the distance measuring sensor (5) be set to the ornaments part (2) and
Between the human skin side (6), the distance measuring sensor (5) is for acquiring the ornaments part (2) and the human skin
The distance signal of side (6)；
Wherein, the output end of the temperature sensor (3) is connect with the input terminal of the signal processing circuit (7), the signal
The output end of processing circuit (7) is connect with the input terminal of first comparison module (8), the output of the distance measuring sensor (5)
End is connect with the input terminal of second comparison module (9), the output end of the alignment sensor (4) mould compared with the third
The input terminal of block (10) connects, the output end of first comparison module (8), second comparison module (9) output end with
And the output end of the third comparison module (10) is connect with the input terminal of the OR circuit (11), the OR circuit
(11) output end is connect with the input terminal of the central processing unit (1), the output end and hand of the central processing unit (1)
The input terminal of machine (12) connects, and the output end of the mobile phone (12) is connect with the input terminal of the third comparison module (10).
2. ornaments anti-losing device according to claim 1, which is characterized in that the temperature sensor (3) is for acquiring people
The temperature signal of body skin, and the temperature signal of acquisition is transmitted to the signal processing circuit (7), the signal processing circuit
(7) by treated, temperature signal is transmitted to first comparison module (8), is stored in first comparison module (8) pre-
If temperature threshold, the temperature signal received is compared by first comparison module (8) with the preset temperature threshold, if
The temperature signal that first comparison module (8) receives is less than the preset temperature threshold, then first comparison module (8)
High level is exported, if the temperature signal that first comparison module (8) receives is greater than or equal to the preset temperature threshold,
First comparison module (8) exports low level；The distance measuring sensor (5) for acquire the ornaments part (2) with it is described
The distance signal transmission of acquisition to described second is compared mould by the distance signal of human skin side (6), the distance measuring sensor (5)
Block (8), be stored with pre-determined distance threshold value in second comparison module (9), second comparison module (9) will receive away from
It is compared from signal with the pre-determined distance threshold value, if the distance signal that second comparison module (9) receives is greater than institute
State pre-determined distance threshold value, then second comparison module (9) exports high level, if what second comparison module (9) received
Distance signal is less than or equal to the pre-determined distance threshold value, then second comparison module (9) exports low level；The positioning passes
Sensor (4) is used to acquire the location information of ornaments, and the position signal of acquisition is transmitted to the third by the alignment sensor (4)
Comparison module (10), position of human body information is stored in the third comparison module (10), and the third comparison module (10) will
The location information received is compared with the position of human body information, if the position that the third comparison module (10) receives
Information and the position of human body information are inconsistent, then the third comparison module (10) exports high level, if the third compares
The location information that module (10) receives is consistent with the position of human body information, then the third comparison module (10) exports low electricity
It is flat.
3. ornaments anti-losing device according to claim 2, which is characterized in that be stored in the third comparison module (10)
Position of human body information, the position of human body information are the location information of the mobile phone (12), and the mobile phone (12) believes its position
Breath is transmitted to the third comparison module (10) and is used as the position of human body information.
4. ornaments anti-losing device according to claim 2, which is characterized in that the output end of first comparison module (8),
The output end of the output end of second comparison module (9) and the third comparison module (10) with the OR circuit
(11) three input terminals connection, the output end of the OR circuit (11) and the input terminal of the central processing unit (1) connect
Connect, wherein the OR circuit (11) to the signal that receives execute or operation after export.
5. ornaments anti-losing device according to claim 3 or 4, which is characterized in that if the central processing unit (1) receives
Arriving is high level signal, then the central processing unit (1) issues first control signal, and the mobile phone (12) receives described
Alert after first control signal；If it is low level signal that the central processing unit (1), which receives, it is described in
Processing unit (1) is entreated to issue second control signal, the mobile phone (12) receives after the second control signal without movement.
6. ornaments anti-losing device according to claim 2, which is characterized in that the temperature sensor (3) is for acquiring people
The output end of the temperature signal of body skin, the temperature sensor (3) is connect with the input terminal of the signal processing circuit (7),
The signal processing circuit (7) successively carries out signal amplification and signal filtering processing to the temperature signal received.
7. ornaments anti-losing device according to claim 6, which is characterized in that the temperature sensor (3) is for acquiring people
The temperature signal of acquisition is converted to voltage signal V0, and voltage signal V0 is transmitted to the letter by the temperature signal of body skin
Number processing circuit (7), V1 are by the signal processing circuit (7) treated voltage signal, the signal processing circuit (7)
Including signal amplification unit and signal filter unit, output end and the signal amplification unit of the temperature sensor (3)
Input terminal connection, the output end of the signal amplification unit are connect with the input terminal of the signal filter unit, the signal filter
The output end of wave unit is connect with the input terminal of the central processing unit (1).
8. ornaments anti-losing device according to claim 7, which is characterized in that the signal amplification unit includes integrated transporting discharging
A1, capacitor C1-C2, triode VT1-VT2 and resistance R1-R7, the pin 1 of integrated transporting discharging A1 and port 5 are bias pin, pin
2 be positive input pin, and pin 3 is reversed input pin, and pin 4 is grounding pin, and pin 6 is output pin, and pin 7 is to connect
Power pins, pin 8 are empty pin；
Wherein, the output end of the temperature sensor (3) is connect with one end of resistance R1, the other end and integrated transporting discharging of resistance R1
The pin 2 of A1 connects, and the other end of resistance R1 is connect with one end of resistance R4, the other end of resistance R4 and the collection of triode VT1
Electrode connection, one end ground connection of resistance R2, the other end of resistance R2 are connect with the pin 3 of integrated transporting discharging A1, one end of resistance R3
It is connect with the pin 7 of integrated transporting discharging A1, another termination+15V power supply of resistance R3, one end of resistance R3 is also with triode VT1's
Emitter connection, one end of capacitor C1 are connect with the pin 6 of integrated transporting discharging A1, and the other end of capacitor C1 and one end of resistance R4 connect
It connects, one end of capacitor C2 is connect with one end of capacitor C1, and the other end of capacitor C2 is connect with the collector of triode VT1, resistance
One end of R5 is connect with one end of capacitor C1, and the other end of resistance R5 is connect with the collector of triode VT1, one end of resistance R6
Ground connection, the other end of resistance R6 are connect with the pin 6 of integrated transporting discharging A1, and one end of resistance R7 is connect with -15V power supply, resistance R7
The other end connect with the pin 4 of integrated transporting discharging A1, the other end of resistance R7 is also connect with the base stage of triode VT2, triode
The collector of VT2 is connect with the collector of triode VT1, and the emitter of triode VT2 is connect with -15V power supply, and capacitor C2's is another
One end is connect with the signal filter unit.
9. ornaments anti-losing device according to claim 8, which is characterized in that the signal filter unit includes resistance R8-
R18, capacitor C3-C8 and integrated transporting discharging A2-A4；
Wherein, the output end of the signal amplification unit is connect with one end of capacitor C3, and the other end of capacitor C3 is with resistance R8's
One end connection, the other end of resistance R8 are connect with one end of resistance R9, the other end of resistance R9 and the output end of integrated transporting discharging A2
Connection, the other end of capacitor C3 are also connect with one end of capacitor C4, the other end of capacitor C4 and the homophase input of integrated transporting discharging A2
End connection, one end ground connection of resistance R10, the other end of resistance R10 are connect with the non-inverting input terminal of integrated transporting discharging A2, resistance R12
One end ground connection, the other end of resistance R12 connect with one end of resistance R11, and the other end of resistance R12 is also with integrated transporting discharging A2's
Inverting input terminal connection, the other end of resistance R11 are connect with the output end of integrated transporting discharging A2, the output end and electricity of integrated transporting discharging A2
One end connection of R14 is hindered, the other end of resistance R14 is connect with one end of resistance R15, the other end and integrated transporting discharging of resistance R15
The inverting input terminal of A3 connects, and the other end of resistance R15 is also connect with one end of capacitor C6, one end ground connection of capacitor C5, capacitor
One end of C5 is also connect with the non-inverting input terminal of integrated transporting discharging A3, and the other end of capacitor C5 is connect with one end of resistance R15, resistance
The other end of R14 is also connect with one end of resistance R13, and the other end of resistance R13 is connect with the output end of integrated transporting discharging A3, capacitor
The other end of C6 is connect with the output end of integrated transporting discharging A3, and the output end of integrated transporting discharging A3 is connect with one end of resistance R16, resistance
The other end of R16 is connect with one end of resistance R18, and the other end of resistance R18 is connect with the inverting input terminal of integrated transporting discharging A4, electricity
The other end of resistance R18 also connect with one end of capacitor C7, and one end of capacitor C8 is grounded, one end of capacitor C8 also with integrated transporting discharging A4
Non-inverting input terminal connection, the other end of capacitor C8 connect with one end of resistance R18, the other end of resistance R16 also with resistance R17
One end connection, the other end of resistance R17 connect with the output end of integrated transporting discharging A4, the other end and integrated transporting discharging A4 of capacitor C7
Output end connection, the output end of integrated transporting discharging A4 connect with the central processing unit (1), and treated by integrated transporting discharging A4 general
Voltage signal V1 is transmitted to the central processing unit (1).
10. ornaments anti-losing device according to claim 5, which is characterized in that if the central processing unit (1) receives
It is high level signal, then the central processing unit (1) issues first control signal, and the mobile phone (12) receives described the
Alert after one control signal, the warning message are the vibration prompt and auditory tone cues that the mobile phone (12) issue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319999.9A CN109935057A (en) | 2019-04-19 | 2019-04-19 | A kind of ornaments anti-losing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319999.9A CN109935057A (en) | 2019-04-19 | 2019-04-19 | A kind of ornaments anti-losing device |
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| CN109935057A true CN109935057A (en) | 2019-06-25 |
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| CN201910319999.9A Pending CN109935057A (en) | 2019-04-19 | 2019-04-19 | A kind of ornaments anti-losing device |
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Cited By (1)
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| WO2022052065A1 (en) * | 2020-09-11 | 2022-03-17 | 深圳市汇顶科技股份有限公司 | Living body proximity detection apparatus and method, and electronic device |
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