CN103776545B - From capacitation pyroelectric detector and the self-adaptive detection method according to energy storage state - Google Patents
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Abstract
The present invention is a kind of from capacitation pyroelectric detector, comprise pyroelectric sensor, Fei Nier lens, SOLAR? the Micro Energy Lose management circuit that SC4155I, energy acquisition store, single-chip microcomputer and shell structure; Luxuriant and rich with fragrance Neil lens are positioned at the top of the sensitivity unit that pyroelectric sensor has, do are the Micro Energy Lose management circuit that pyroelectric sensor and energy acquisition store and single-chip microcomputer connected, the Micro Energy Lose management circuit that energy acquisition stores and SOLAR? SC4155I and single-chip microcomputer are connected; Do are the Micro Energy Lose management circuit that single-chip microcomputer, energy acquisition store and pyroelectric sensor fixed on the inside of shell structure, SOLAR? SC4155I and Fei Nier lens are fixed on shell structure surface.The Micro Energy Lose management circuit that the present invention stores in conjunction with low light level solar panel, energy acquisition and accumulator Hot Spare technology, Efficient Collection, storage and management energy, have that energy is little from smelting, maintenance work amount, the advantage of high efficient and reliable.
Description
Technical field
The invention belongs to the technical field of security protection pyroelectric detector, relate to a kind of employing specifically from capacitation technology and carry out the pyroelectric detector of self-adaptive detection according to accumulator energy storage state.
Background technology
Along with the propelling of China's building intelligent, the New function of intelligent building continues to bring out, but safety protection function the function the most basic that to be intelligent building all the time indispensable, and one of the basic technology equipment of pyroelectric detector safety-protection system just.Therefore, business circles and academia have carried out lasting Researching and practicing extensively and profoundly to the reliability of pyroelectric detector and pyroelectric detector safety-protection system, availability and maintainability.At present, the main product of China's pyroelectric detector is wired product or battery powered nothing/wired product of wiring power supply; In view of wired product needed connects up power supply specially, have that construction is complicated, system lacks flexible defect; Battery powered nothing/wired product depends on battery, there is the potential safety hazard that maintenance work amount is large, battery altering causes not in time.In addition, no matter be wired product or wireless product, existing pyroelectric detector safety-protection system all lacks a kind of effective simple technique of characterization system real-time working condition, causes certain negative effect to the global reliability of system.Typical battery-powered wireless security product has: the (1) WL-MD-B infrared intrusion detector of Nanjing Wulian Sensing Technology Co., Ltd., a infrared invasion real-time detection based on the design of ZigBee wireless technology, panalarm, when human body enters monitored area, the infrared ray of human body just can be detected device and sense in real time, according to actual conditions, send corresponding signal, as illegal invasion, namely send alerting signal.(2) the MC-55R infrared eye of Shenzhen Mei An Science and Technology Ltd. adopts 433M/868MHz radio-frequency communication technology, and built-in high capacity cell guarantees that detector works long hours, reliable warning after detecting invasion.
Through applicant's retrieval, the main patent of this area has: (1) guard against theft and alarm system and wireless detector (CN202306740U) thereof, proposes detector to be combined with wireless communication technique, and it is reliable with true wireless guarantor's communication to adopt multiple frequency range to carry out communication.(2) based on the Radio infrared sensing system (CN203179260U) of zigbee, infrared sensing scheme based on zigbee radio sensing network is proposed, by the relay of transducing signal by air message each node in a network, send to destination node, can powered battery be adopted.Above-mentioned patent specifies the overall development thinking of pyroelectric detector security product, but still there is suitable limitation, battery powered inherent shortcoming cannot obtain basic solution within the foreseeable time, the High Availabitity of wireless pyroelectric detector and wireless pyroelectric detector safety-protection system, highly reliablely and easy-to-use safeguard aspect still existing defects, be necessary to propose on the basis of existing technology to improve.
Although be expected to the battery powered inherent shortcoming of root smelting from capacitation technology, from the usefulness of capacitation technology and external environment is closely bound up, the environmental energy collected has uncertain feature.Therefore, the collaboration support of multiple technologies is still needed from the wireless pyroelectric detector of capacitation reliable and available, such as: the energy management circuit of collection of energy and Micro Energy Lose efficiently, accumulator Hot Spare technology, according to the message self-adaptation transmission frequency technology of accumulator energy storage state and the EnOcean air message of simplifying.Must be pointed out, the reliable availability of pyroelectric detector self is not only depended on from the reliable availability of capacitation pyroelectric detector safety-protection system, also relevant with the reliable availability of the safety-protection system that pyroelectric detector forms to a great extent, effective simple technique of exploitation sign safety-protection system real-time working condition contributes to the reliable availability improving entire system undoubtedly.
Summary of the invention
Technical matters to be solved by this invention is, overcome the shortcoming of prior art, there is provided a kind of and can reduce the power consumption of pyroelectric detector from capacitation pyroelectric detector and the self-adaptive detection method according to energy storage state, improve the reliabilty and availability of pyroelectric detector.
The technical scheme that the present invention solves above technical matters is:
From capacitation pyroelectric detector, comprise pyroelectric sensor, Micro Energy Lose management circuit that Fei Nier lens, low light level solar panel, energy acquisition store, single-chip microcomputer and shell structure; Luxuriant and rich with fragrance Neil lens are positioned at the top of the sensitivity unit that pyroelectric sensor has, the Micro Energy Lose management circuit that pyroelectric sensor and energy acquisition store and single-chip microcomputer are connected, and the Micro Energy Lose management circuit that energy acquisition stores is connected with low light level solar panel and single-chip microcomputer; The Micro Energy Lose management circuit that single-chip microcomputer, energy acquisition store and pyroelectric sensor are fixed on the inside of shell structure, and low light level solar panel and Fei Nier lens are fixed on shell structure surface;
Low light level solar panel is collected ambient light energy and is converted into the Micro Energy Lose management circuit that electric energy exports energy acquisition storage to; The electric energy that the Micro Energy Lose management circuit process low light level solar panel that energy acquisition stores exports, and to the charging accumulator that the Micro Energy Lose management circuit that energy acquisition stores has; Energy acquisition store Micro Energy Lose management circuit United Dispatching under, low light level solar panel export electric energy and accumulator electric discharge electric energy form pyroelectric detector from capacitation power supply, power to single-chip microcomputer and pyroelectric sensor from capacitation power supply; Luxuriant and rich with fragrance Neil lens and pyroelectric sensor combined detection human motion, the single-chip microcomputer input signal uploaded of pyroelectric sensor and control the Micro Energy Lose management circuit that energy acquisition stores, and according to energy storage state single-chip microcomputer (built-in radio receiving transmitting module) transmission frequency of accumulator adjustable and characterize the EnOcean heartbeat message of pyroelectric detector real-time working condition; Shell structure is used for fixing above-mentioned parts.
The technical scheme that the present invention limits further is:
Aforesaid from capacitation pyroelectric detector, wherein the model of pyroelectric sensor is LHI968, and the model of single-chip microcomputer is STM300, and the model stating low light level solar panel is SOLARSC4155I.
Aforesaid from capacitation pyroelectric detector, wherein comprise SOLARSC4155I from the circuit of capacitation pyroelectric detector, tantalum electric capacity C21, Large Copacity super capacitor C22 and C23, STM300, latch 74HC573, pyroelectric sensor LHI968, field effect transistor Q21, Q22, Q23 and Q24, triode Q25, Q26, Q27 and Q28 and diode D21, D22, D23, D24 and D25;
" ﹢ " pole of SOLARSC4155I is connected with diode D21 anode and field effect transistor Q21 source electrode, "-" pole ground connection of SOLARSC4155I, and diode D21 negative electrode is connected with 3 with tantalum electric capacity C21 " ﹢ " pole and STM300 pin two; Tantalum electric capacity C21 "-" pole ground connection, the two ends of resistance R21 are connected with gate pole with the source electrode of field effect transistor Q21 respectively; Field effect transistor Q21 gate pole is connected with triode Q25 collector, triode Q25 grounded emitter, and triode Q25 base stage is connected with one end of resistance R22, and the other end of resistance R22 is connected with STM300 pin 30; Field effect transistor Q21 drain electrode is connected with diode D23 anode and field effect transistor Q23 source electrode, diode D23 negative electrode is connected with diode D22 anode, diode D22 negative electrode is connected with diode D21 negative electrode, and the two ends of resistance R25 are connected with gate pole with the source electrode of field effect transistor Q23 respectively; Field effect transistor Q23 gate pole is connected with triode Q27 collector, triode Q27 grounded emitter, and triode Q27 base stage is connected with one end of resistance R26, and the other end of resistance R26 is connected with latch 74HC573 pin one 9; Field effect transistor Q23 drain electrode is connected with diode D25 anode, diode D25 negative electrode is connected with diode D24 anode, diode D24 negative electrode is connected with diode D21 negative electrode, one end of resistance R23 is connected with STM300 pin 30, the other end of resistance R23 is connected with electric capacity C24 one end and triode Q26 base stage, and the other end of electric capacity C24 is connected with triode Q26 collector; Triode Q26 grounded emitter, triode Q26 collector is connected with field effect transistor Q22 gate pole, and the two ends of resistance R24 are connected with source electrode with the gate pole of field effect transistor Q22 respectively; Field effect transistor Q22 drain electrode is connected with diode D22 anode, field effect transistor Q22 source electrode is extremely connected with Large Copacity super capacitor C22 "+", Large Copacity super capacitor C22 "-" pole ground connection, one end of resistance R27 is connected with latch 74HC573 pin one 9, the other end of resistance R27 is connected with one end of electric capacity C25 and triode Q28 base stage, and the other end of electric capacity C25 is connected with triode Q28 collector; Triode Q28 grounded emitter, triode Q28 collector is connected with field effect transistor Q24 gate pole, and the two ends of resistance R28 are connected with source electrode with field effect transistor Q24 gate pole respectively; Field effect transistor Q24 drain electrode is connected with diode D24 anode, field effect transistor Q24 source electrode is extremely connected with Large Copacity super capacitor C23 "+", Large Copacity super capacitor C23 "-" pole ground connection, latch 74HC573 pin two 0 is connected with diode D22 anode, ground connection after latch 74HC573 pin one 0 and pin one parallel connection, the pin one 1,2 of latch 74HC573 is connected with the pin one 6,15 of STM300 respectively; The pin 9,10,1,4,32 of STM300 respectively with Large Copacity super capacitor C22 "+" pole, Large Copacity super capacitor C23 "+" pole, one end of antenna E11, resistance R11 is connected, the other end of resistance R11 is connected with STM300 pin 33; The pin 33,2 of STM300 is connected with the pin 3,2 of pyroelectric sensor LHI968 respectively, pyroelectric sensor LHI968 pin one ground connection;
The detectable signal that pyroelectric sensor LHI968 pin 3 exports is to STM300 pin 33, detectable signal can wake the STM300 of deep sleep up, STM300 pin 4 connects antenna E11, according to the EnOcean heartbeat message of the adjustable sign pyroelectric detector real-time working condition of Micro Energy Lose management circuit accumulator energy storage state transmission frequency that energy acquisition stores;
The voltage of tantalum electric capacity C21, Large Copacity super capacitor C22 and C23 is gathered by the pin two, 9,10 of STM300 respectively; When STM300 pin 30 exports high or low level, on the one hand field effect transistor Q21 conducting corresponding to triode Q25 or cut-off, Large Copacity super capacitor C22 charge circuit is corresponding opens or closes, field effect transistor Q22 conducting corresponding to triode Q26 or cut-off on the other hand, Large Copacity super capacitor C22 discharge loop is corresponding to be opened or closed, and the delay circuit that R24 and electric capacity C24 forms simultaneously makes Large Copacity super capacitor C22 discharge loop time-delay closing;
The pin one 5,16 of STM300 is connected with the pin two, 11 of latch 74HC573 respectively, and the pin one 9 of latch 74HC573 controls the charge or discharge of Large Copacity super capacitor C23; When STM300 pin one 6 high level, pin one 5 high or low level, the pin of latch 74HC573 mutually should 19 high or low level, on the one hand field effect transistor Q23 conducting corresponding to triode Q27 or cut-off, Large Copacity super capacitor C23 charge circuit open or close, and the delay circuit that field effect transistor Q24 and triode Q28 conducting or cut-off on the other hand, Large Copacity super capacitor C23 discharge loop be corresponding to be opened or closed, resistance R28 and electric capacity C25 forms simultaneously makes Large Copacity super capacitor C23 discharge loop time-delay closing;
The accumulator of the Micro Energy Lose management circuit that energy acquisition stores is made up of low capacity tantalum electric capacity C21, Large Copacity super capacitor C22 and C23; Tantalum electric capacity C21 is used for rapid charge, when tantalum electric capacity C21 voltage reaches the operating voltage of STM300, power to STM300, start pyroelectric detector, the electric energy that SOLARSC4155I produces charges to tantalum electric capacity C21, if SOLARSC4155I also has the voltage of dump energy, foundation Large Copacity super capacitor C22 and C23, or unloading is to Large Copacity super capacitor C22 or C23 or the dump energy giving up SOLARSC4155I generation; Large Copacity super capacitor C22 and C23 stores the dump energy that SOLARSC4155I collects, SOLARSC4155I electricity shortage or when not powering, and the long-term stability of being maintained pyroelectric detector by Large Copacity super capacitor C22 is run; Large Copacity super capacitor C23 is the Hot Spare of C22, when the electric energy that SOLARSC4155I and Large Copacity super capacitor C22 store cannot ensure the electrical energy demands of pyroelectric detector or when Large Copacity super capacitor C22 lost efficacy, the long-term stability of being maintained pyroelectric detector by Large Copacity super capacitor C23 is run.
Aforesaid from capacitation pyroelectric detector, the discharge and recharge flow process of the accumulator of the Micro Energy Lose management circuit of wherein energy acquisition storage is made up of initialization and accumulator voltage sample flow process, the charging flow of accumulator and the discharge flow path of accumulator;
The variable of the discharge and recharge flow process of the accumulator of the Micro Energy Lose management circuit that energy acquisition stores is as follows:
Sample_V
c21, Sample_V
c22, Sample_V
c23for the sampled value of C21, C22, C23 voltage, Rating_V
c21, Rating_V
c22, Rating_V
c23for the higher limit of C21, C22, C23 rated operational voltage, namely the higher limit of C21, C22 and C23 rated operational voltage is the higher limit 5V of STM300 rated operational voltage, 0.572*Rating_V
c21, 0.572*Rating_V
c22, 0.572*Rating_V
c23be then the lower limit of C21, C22, C23 rated operational voltage, namely the lower limit of C21, C22 and C23 rated operational voltage is 1.1 times (2.86V=0.572*5V) of STM300 rated operational voltage lower limit 2.6V; Illustrate: STM300 has wide in range operating voltage interval [2.6V, 5V], it is for improving considering of pyroelectric detector reliability that C21, C22, C23 rated operational voltage lower limit gets 1.1*2.6V;
C21 discharge variable: Discharge_C21=0,2100,2111 be respectively initial value, forbid electric discharge, allow electric discharge;
C22 charge variable: Charge_C22=0,220,221 is respectively initial value, forbids charging, allows charging;
C22 discharge variable: Discharge_C22=0,2200,2211 be respectively initial value, forbid electric discharge, allow electric discharge;
C23 charge variable: Charge_C23=0,230,231 is respectively initial value, forbids charging, allows charging;
C23 discharge variable: Discharge_C23=0,2300,2311 be respectively initial value, forbid electric discharge, allow electric discharge;
C21 discharges, the criterion of C22 and C23 charging and discharging:
Sample_V
c21<Rating_V
c21, Discharge_C21=2100, otherwise Discharge_C21=2111;
Sample_V
c22<Rating_V
c22, Charge_C22=221, otherwise Charge_C22=220;
Sample_V
c22<0.572*Rating_V
c22, Discharge_C22=2200, otherwise Discharge_C22=2211;
Sample_V
c23<Rating_V
c23, Charge_C23=231 otherwise Charge_C22=230;
Sample_V
c23<0.572*Rating_V
c23, Discharge_C23=2300, otherwise Discharge_C22=2311;
The concrete steps of charging accumulator and discharge flow path are as follows:
(1) initialization, Discharge_C21=0, Charge_C22=0, Discharge_C22=0, Charge_C23=0, Discharge_C23=0,
(2) accumulator voltage sample, Sample_V
c21, Sample_V
c22, Sample_V
c23assignment,
(3), according to C21 electric discharge, the criterion of the charging and discharging of C22 and C23, to Discharge_C21, Charge_C22, Discharge_C22, Charge_C23, Discharge_C23 assignment;
1. Discharge_C21=2100, returns;
②Discharge_C21=2111，
2.-1:Charge_C22=221, allows C22 charging, forbids that C23 charges;
2.-2:Charge_C22=220andCharge_C23=231, allows C23 charging, forbids that C22 charges;
2.-3:Charge_C22=220andCharge_C23=230, returns;
(5) the discharge flow path of accumulator:
1. Discharge_C22=2211, allows C22 electric discharge, forbids that C23 discharges;
2. Discharge_C22=2200andDischarge_C23=2311, allows C23 electric discharge, forbids that C22 discharges;
3. Discharge_C22=2200andDischarge_C23=2300, forbids C22 electric discharge, forbids C23 electric discharge, returns.
Aforesaid from capacitation pyroelectric detector, wherein follow EnOcean agreement from the human body detection air message of capacitation pyroelectric detector, human body detection air message is made up of four territories: RORG territory: the communication packet type of 1 byte, DATA territory: the wireless packet data of 1 byte, TXID territory: unique ID and STATUS & HASH territory, the whole world of 4 bytes: the network state of 2 bytes and data check; Wherein the BIT70/1 in DATA territory indicate without/have people (as Fig. 5, in DATA territory, the value of first " BIT7 " represents whether detect human body from left to right, if this value is " 0 ", then represents and does not detect human body, if this value is " 1 ", then represents and detect human body.), BIT6-BIT0 represents the number percent of stored energy or nominal energy, second from left to right in 0 expression accumulator noenergy, 127(DATA territory is the binary number of 7 to the 8th " BIT6-BIT0 ", span is 0 ~ 127, when this value of 7 is 0, then represent 0%, when this value of 7 is 127, then represent 100%) represent reached accumulator nominal energy.Human body detection air message example: RORG territory 0xD5, type of message is the air message of human body detection; DATA territory 0xF2, has people and dump energy is 89.7% of nominal electricity; TXID territory 0x00018C3A, the unique ID in the whole world of pyroelectric detector; STATUS & HASH territory 0x002D, network state and data check value.
Aforesaid from capacitation pyroelectric detector, wherein follow EnOcean agreement from the heartbeat air message of capacitation pyroelectric detector, heartbeat air message is made up of two territories: DATA territory: the wireless packet data of 1 byte and TXID territory: the unique ID in the whole world of 4 bytes, wherein the BIT70/1 in DATA territory is of equal value, all the online operating mode of expression pyroelectric detector is normal (as shown in Figure 6, " BIT7 " position in the DATA territory of heartbeat message no longer characterizes whether detect human body, therefore value is 1 or 0 equivalence.), BIT6-BIT0 represents the number percent of stored energy or nominal energy, second from left to right in 0 expression accumulator noenergy, 127(DATA territory is the binary number of 7 to the 8th " BIT6-BIT0 ", span is 0 ~ 127, when this value of 7 is 0, then represent 0%, when this value of 7 is 127, then represent 100%) represent reach nominal energy.Heartbeat air message example: DATA territory 0x72, the online operating mode of pyroelectric detector is normal and dump energy is 89.7% of nominal electricity; TXID territory 0x00018C3A, the unique ID in the whole world of pyroelectric detector.
The self-adaptive detection method according to energy storage state from capacitation pyroelectric detector of the application, comprising:
Discharge_C22=2211, when the electric energy that namely Large Copacity super capacitor C22 stores is powered, the message transmission frequency of human body detection and heartbeat is 9 heartbeat air message in 10 points, 1 human body detection air message;
Discharge_C22=2200andDischarge_C23=2311, when the electric energy that namely Large Copacity super capacitor C23 stores is powered, the electric energy of the message transmission frequency foundation C23 of human body detection and heartbeat, i.e. Sample_V
c23the adjustment of voltage sample value sends 9 heartbeat air message, 1 human body detection air message in 10 points, in 110 points, send 9 heartbeat air message, 1 human body detection air message, after maintaining degradation basic safety protection function basis on extend working time of pyroelectric detector as far as possible, program realizes adopting calculated amount minimum and the simplest form of form, super capacitor C23[5.000V, 1.1*2.6V] interval division becomes 10 minizones: [5V, 4.786V), [4.786V, 4.572V), [4.572V, 4.358V), [4.358V, 4.144V), [4.144V, 3.930V), [3.930V, 3.716V), [3.716V, 3.502V), [3.502V, 3.288V), [3.288V, 3.074V), [3.074V, 1.1*2.6V] corresponding 10 points respectively, 20 points, 30 points, 40 points, 50 points, 60 points, 70 points, 80 points, 90 points, 100 points, 110 points send 9 heartbeat air message, 1 human body detection air message.
The invention has the beneficial effects as follows: the present invention overcomes battery powered inherent shortcoming from the wireless pyroelectric detector of capacitation to have that energy is non-maintaining from smelting, easily extensible, reliably available advantage; The application that the Micro Energy Lose management circuit that energy acquisition stores, accumulator Hot Spare technology and EnOcean simplify air message reduces the power consumption of pyroelectric detector, improves the reliabilty and availability of pyroelectric detector; According to the self-adaptive detection method of accumulator energy storage state, namely base oneself upon the transmission frequency of the electric energy adjustment heartbeat air message of accumulator, further increase the reliabilty and availability of pyroelectric detector; The real-time working condition of the pyroelectric detector of composition safety-protection system can be obtained by Heart-Beat Technology, contribute to the reliable availability improving pyroelectric detector safety-protection system entirety.In addition, the present invention is wireless can make equipment exempt from wiring from capacitation, and convenient installation, is suitable for Late reformation project; Wireless frequency adopts 868MHz., and penetrability is strong, and propagation distance is far away, and in wireless channel, interference is few; International standard home control network communication protocol, interoperability is high.
Pyroelectric detector of the present invention adopts EnOcean wireless communication technology, the Micro Energy Lose management circuit stored in conjunction with low light level solar panel, energy acquisition and accumulator Hot Spare technology, Efficient Collection, storage and management energy, have from capacitation pyroelectric detector solution that energy is little from smelting, maintenance work amount, the advantage of high efficient and reliable.According to the energy storage state from capacitation pyroelectric detector accumulator, by the EnOcean heartbeat message that adaptive technique transmission frequency is adjustable, improve the availability from capacitation pyroelectric detector; The application of Heart-Beat Technology improves the reliabilty and availability from capacitation pyroelectric detector safety-protection system; The EnOcean air message of simplifying reduces the communication power consumption from capacitation pyroelectric detector.
Accompanying drawing explanation
Fig. 1 is from the structural drawing of capacitation pyroelectric detector.
Fig. 2 is from the theory diagram of capacitation pyroelectric detector.
Fig. 3 is from the circuit diagram of capacitation pyroelectric detector.
The discharge and recharge process flow diagram of Fig. 4 accumulator.
The air message structural drawing of Fig. 5 human body detection.
The air message structural drawing of Fig. 6 heartbeat.
The graph of relation of Fig. 7 human body detection and heartbeat message frequency and accumulator energy storage value.
Embodiment
embodiment 1
The present embodiment is a kind of from capacitation pyroelectric detector, as depicted in figs. 1 and 2, comprise pyroelectric sensor LHI968(4 from capacitation pyroelectric detector), Fei Nier lens (5), SOLARSC4155I(3), energy acquisition the Micro Energy Lose management circuit (2), the STM300(1 that store) and shell structure (6); Luxuriant and rich with fragrance Neil lens (5) is positioned at pyroelectric sensor LHI968(4) responsive first top, pyroelectric sensor LHI968(4) the Micro Energy Lose management circuit (2), the STM300(1 that store with energy acquisition) be connected, the Micro Energy Lose management circuit (2) that energy acquisition stores and SOLARSC4155I(3), STM300(1) be connected; STM300(1), the Micro Energy Lose management circuit (2) that stores of energy acquisition and pyroelectric sensor LHI968(4) be fixed on the inside of shell structure (6), SOLARSC4155I(3) and Fei Nier lens (5) to be fixed on shell structure (6) surperficial;
SOLARSC4155I(3) collect ambient light energy and be converted into electric energy output; Micro Energy Lose management circuit (2) the treatment S OLARSC4155I(3 that energy acquisition stores) electric energy that exports, to the charging accumulator of the Micro Energy Lose management circuit (2) that energy acquisition stores; Under Micro Energy Lose management circuit (2) United Dispatching that energy acquisition stores, SOLARSC4155I(3) electric energy exported and accumulator electric discharge electric energy form pyroelectric detector from capacitation power supply, from capacitation power supply to STM300(1) and pyroelectric sensor LHI968(4) power; Luxuriant and rich with fragrance Neil lens (5) and pyroelectric sensor LHI968(4) combined detection human motion, STM300(1) input pyroelectric sensor LHI968(4) signal uploaded, control the Micro Energy Lose management circuit (2) that energy acquisition stores, according to the energy storage state transmission frequency of accumulator adjustable, the EnOcean heartbeat message that characterizes pyroelectric detector real-time working condition; Shell structure (6) is for fixing above-mentioned parts.
As shown in Figure 3, SOLARSC4155I is comprised from the circuit of capacitation pyroelectric detector, tantalum electric capacity C21, super capacitor DCL5R5105-CC22, C23, STM300, latch 74HC573, pyroelectric sensor LHI968, field effect transistor BSS84LT1Q21, Q22, Q23, Q24, triode Q25, Q26, Q27, Q28 and diode D21, D22, D23, D24, D25;
SOLARSC4155I " ﹢ " pole is connected with D21 anode, Q21 source electrode, SOLARSC4155I "-" pole ground connection, and D21 negative electrode is connected with 3 with tantalum electric capacity C21 " ﹢ " pole, STM300 pin two; Tantalum electric capacity C21 "-" pole ground connection, the two ends of R21 are connected with the source electrode of Q21, gate pole respectively; Q21 gate pole is connected with Q25 collector, Q25 grounded emitter, and Q25 base stage is connected with one end of R22, and the other end of R22 is connected with STM300 pin 30; Q21 drain electrode is connected with D23 anode, Q23 source electrode, and D23 negative electrode is connected with D22 anode, and D22 negative electrode is connected with D21 negative electrode, and the two ends of R25 are connected with the source electrode of Q23, gate pole respectively; Q23 gate pole is connected with Q27 collector, Q27 grounded emitter, and Q27 base stage is connected with one end of R26, and the other end of R26 is connected with latch 74HC573 pin one 9; Q23 drain electrode is connected with D25 anode, and D25 negative electrode is connected with D24 anode, and D24 negative electrode is connected with D21 negative electrode, and one end of R23 is connected with STM300 pin 30, and the other end of R23 is connected with C24 one end, Q26 base stage, and the other end of C24 is connected with Q26 collector; Q26 grounded emitter, Q26 collector is connected with Q22 gate pole, and the two ends of R24 are connected with the gate pole of Q22, source electrode respectively; Q22 drain electrode is connected with D22 anode, Q22 source electrode is extremely connected with super capacitor C22 "+", C22 "-" pole ground connection, and one end of R27 is connected with latch 74HC573 pin one 9, the other end of R27 is connected with one end of C25, Q28 base stage, and the other end of C25 is connected with Q28 collector; Q28 grounded emitter, Q28 collector is connected with Q24 gate pole, and the two ends of R28 are connected with Q24 gate pole, source electrode respectively; Q24 drain electrode is connected with D24 anode, Q24 source electrode is extremely connected with super capacitor C23 "+", C23 "-" pole ground connection, latch 74HC573 pin two 0 is connected with D22 anode, ground connection after latch 74HC573 pin one 0 and pin one parallel connection, the pin one 1,2 of latch 74HC573 is connected with the pin one 6,15 of STM300 respectively; The pin 9,10,1,4,32 of STM300 respectively with C22 "+" pole, C23 "+" pole, one end of antenna E11, R11 is connected, the other end of R11 is connected with STM300 pin 33; The pin 33,2 of STM300 is connected with the pin 3,2 of pyroelectric sensor LHI968 respectively, pyroelectric sensor LHI968 pin one ground connection;
STM300, STM300 pin 4 that the detectable signal that pyroelectric sensor LHI968 pin 3 exports to STM300 pin 33, detectable signal can wake deep sleep up connects RF antenna, the Micro Energy Lose management circuit accumulator energy storage state stored according to energy acquisition, transmission frequency is adjustable, the EnOcean heartbeat message that characterizes pyroelectric detector real-time working condition;
The voltage of tantalum electric capacity C21, super capacitor C22, C23 is gathered by the pin two, 9,10 of STM300 respectively; When STM300 pin 30 exports high/low level, Q21 and Q25 conduction and cut-off, C22 charge circuit opening/closing on the one hand, Q22 and Q26 conduction and cut-off, C22 discharge loop opening/closing, the simultaneously delay circuit of R24 and C24 composition make C22 discharge loop time-delay closing on the other hand;
The pin one 5,16 of STM300 is connected with the pin two, 11 of latch 74HC573 respectively, the charge/discharge of the pin one 9 control C23 of latch 74HC573; When STM300 pin one 6 high level, pin one 5 high/low level, the high/low level of pin one 9 of latch 74HC573, Q23 and Q27 conduction and cut-off, C23 charge circuit opening/closing on the one hand, Q24 and Q28 conduction and cut-off, C23 discharge loop opening/closing, the simultaneously delay circuit of R28 and C25 composition make C23 discharge loop time-delay closing on the other hand;
The Micro Energy Lose management circuit accumulator that energy acquisition stores is made up of low capacity tantalum electric capacity C21, Large Copacity super capacitor C22 and C23; C21 is used for rapid charge, when C21 voltage reaches the operating voltage of STM300, power to STM300, start pyroelectric detector, the electric energy that SOLARSC4155I produces charges to C21, if SOLARSC4155I also has the voltage of dump energy, foundation C22 and C23, or unloading is to C22 or C23 or the dump energy giving up SOLARSC4155I generation; C22 and C23 stores the dump energy that SOLARSC4155I collects, SOLARSC4155I electricity shortage or when not powering, and the long-term stability of being maintained pyroelectric detector by C22 is run; C23 is the Hot Spare of C22, and when the electric energy that SOLARSC4155I and C22 stores cannot ensure the electrical energy demands of pyroelectric detector or when C22 lost efficacy, the long-term stability of being maintained pyroelectric detector by C23 is run;
The Micro Energy Lose management circuit that energy acquisition stores is the special circuit of μ A level power consumption, and the realization of μ A level power consumption depends on two gordian techniquies:
The first, the deep sleep technology of main flow ultra low-power microcontroller is not only had towards the STM300 chip from capacitation certain applications, even and if pin 30 high level and pin 30 high level also can be put during STM300 deep sleep can ensure that C22 electric discharge and charge circuit are opened under trigger voltage
The second, latch 74HC573 is the peripheral circuit of core, latch 74HC573 latch STM300 run time pin one 5 and 16 state, STM300 deep sleep time pin one 5 and 16 loss of state, but the output level of latch 74HC573 pin one 9 is still the logical combination of pin one 5 and 16 state when STM300 runs, the output level of pin one 9 determines that C23 electric discharge and charge circuit are opened;
In a word, during STM300 work, STM300 determines that the state of C22, C23 electric discharge and charging switches; During STM300 deep sleep, be the peripheral circuit of core by unique high level characteristic of STM300 pin 30, latch 74HC573, C22, C23 electric discharge of specifying when maintaining STM300 work and charged state; Must be pointed out, power consumption when power consumption during STM300 deep sleep works relatively is insignificant, and the working time of STM300 only has 10
-2~ 10
-3the deep sleep time of the order of magnitude.
As shown in Figure 4, the charge/discharge flow process of energy acquisition storage management circuit accumulator is made up of initialization and accumulator voltage sample flow process, the charging flow of accumulator and the discharge flow path of accumulator;
The variable of accumulator charge/discharge flow process is as follows:
Sample_V
c21, Sample_V
c22, Sample_V
c23for the sampled value of C21, C22, C23 voltage,
Rating_V
c21, Rating_V
c22, Rating_V
c23for the higher limit 5V of the higher limit of C21, C22, C23 rated operational voltage, i.e. STM300 rated operational voltage, 0.572*Rating_V
c21, 0.572*Rating_V
c22, 0.572*Rating_V
c23be then 1.1 times (2.86V=0.572*5V) of the lower limit of C21, C22, C23 rated operational voltage, i.e. STM300 rated operational voltage lower limit 2.6V,
Illustrate: STM300 has wide in range operating voltage interval [2.6V, 5V], it is for improving considering of pyroelectric detector reliability that C21, C22, C23 rated operational voltage lower limit gets 1.1*2.6V,
C21 discharge variable: Discharge_C21=0,2100,2111 for initial value, forbid electric discharge, allow electric discharge,
C22 charge variable: Charge_C22=0,220,221 is initial value, forbids charging, allows charging,
C22 discharge variable: Discharge_C22=0,2200,2211 for initial value, forbid electric discharge, allow electric discharge,
C23 charge variable: Charge_C23=0,230,231 is initial value, forbids charging, allows charging,
C23 discharge variable: Discharge_C23=0,2300,2311 for initial value, forbid electric discharge, allow electric discharge;
C21 discharges, the criterion of C22, C23 charge/discharge:
Sample_V
c21<Rating_V
c21, Discharge_C21=2100 otherwise Discharge_C21=2111;
Sample_V
c22<Rating_V
c22, Charge_C22=221 otherwise Charge_C22=220,
Sample_V
c22<0.572*Rating_V
c22, Discharge_C22=2200 otherwise Discharge_C22=2211;
Sample_V
c23<Rating_V
c23, Charge_C23=231 otherwise Charge_C22=230,
Sample_V
c23<0.572*Rating_V
c23, Discharge_C23=2300 otherwise Discharge_C22=2311;
The concrete steps of accumulator charge/discharge flow process are as follows:
Initialization and accumulator voltage sample flow process:
1. initialization, Discharge_C21=0, Charge_C22=0, Discharge_C22=0, Charge_C23=0, Discharge_C23=0,
2. accumulator voltage sample, Sample_V
c21, Sample_V
c22, Sample_V
c23assignment,
3., according to C21 electric discharge, the criterion of C22, C23 charge/discharge, to Discharge_C21, Charge_C22, Discharge_C22, Charge_C23, Discharge_C23 assignment;
The charging flow of I accumulator:
1-1.Discharge_C21=2100, returns;
1-2.Discharge_C21=2111，
1-2-1.Charge_C22=221, allows C22 charging, forbids that C23 charges;
1-2-2.Charge_C22=220andCharge_C23=231, allows C23 charging, forbids that C22 charges;
1-2-3.Charge_C22=220andCharge_C23=230, returns;
The discharge flow path of II accumulator:
2-1.Discharge_C22=2211, allows C22 electric discharge, forbids that C23 discharges;
2-2.Discharge_C22=2200andDischarge_C23=2311, allows C23 electric discharge, forbids that C22 discharges;
2-3.Discharge_C22=2200andDischarge_C23=2300, forbids C22 electric discharge, forbids C23 electric discharge, returns.
As shown in Figure 5, EnOcean agreement is followed from the human body detection air message of capacitation pyroelectric detector, human body detection air message is made up of four territories: RORG territory: the communication packet type of 1 byte, DATA territory: the wireless packet data of 1 byte, TXID territory: unique ID and STATUS & HASH territory, the whole world of 4 bytes: the network state of 2 bytes and data check; Wherein the BIT70/1 in DATA territory indicate without/have people, BIT6 ~ BIT0 represents the number percent of stored energy/nominal energy, and 0 represents that accumulator noenergy, 127 represents has reached accumulator nominal energy.Human body detection air message example: RORG territory 0xD5, type of message is the air message of human body detection; DATA territory 0xF2, has people and dump energy is 89.7% of nominal electricity; TXID territory 0x00018C3A, the unique ID in the whole world of pyroelectric detector; STATUS & HASH territory 0x002D, network state and data check value;
In conjunction with example, the term intension that super capacitor is relevant is described: if the real work voltage range [2.6 of single-chip microcomputer, 5V], then the rated operational voltage section definition of super capacitor be [1.1*2.6,5V], the difference of electric energy corresponding to rated operational voltage is called the rated power of super capacitor, if the voltage of super capacitor instructions be 5.5V, 5.5V is called the nominal voltage of super capacitor and store electrical energy during super-capacitor voltage 5.5V is defined as the nominal electric energy of super capacitor; Obviously, part electric energy is only had to can be used for pyroelectric detector in super capacitor nominal electric energy, the dump energy that it is base unit that air message is uploaded with super capacitor nominal electric energy, the convertible dump energy representation sanctified by usage in the industry of air message receiver, converts representation more directly perceived more significant to user, can supply the dump energy that the maximum power of pyroelectric detector be base unit with super capacitor to.
As shown in Figure 6, EnOcean agreement is followed from the heartbeat air message of capacitation pyroelectric detector, heartbeat air message is made up of two territories: DATA territory: the wireless packet data of 1 byte and TXID territory: the unique ID in the whole world of 4 bytes, wherein the BIT70/1 in DATA territory is of equal value, all the online operating mode of expression pyroelectric detector is normal, BIT6 ~ BIT0 represents the number percent of stored energy/nominal energy, and 0 represents that accumulator noenergy, 127 represents reaches nominal energy; .Heartbeat air message example: DATA territory 0x72, the online operating mode of pyroelectric detector is normal and dump energy is 89.7% of nominal electricity; TXID territory 0x00018C3A, the unique ID in the whole world of pyroelectric detector;
EnOcean procotol is different from the procotol based on CSMA technology current at present, is a kind of typical direct mode medium access protocol, divide into groups the similar seventies wireless broadcast technologies ALOHA of computer network, therefore there is the hidden danger of conflict, message dropping between EnOcean message; But the defect of EnOcean is under capacitation certain applications, still what is gained is more than what is lost! Because eliminate message collisions detection, its energy consumption of event during the medium access of EnOcean direct mode far below the energy consumption of CSMA network service, performance index first place is ranked for low energy consumption index for capacitation equipment; The plan of the reply of EnOcean message dropping the most simply repeats sending strategy--make message dropping be a small probability event, theoretical analysis and engineering measurement prove that EnOcean agreement is effective: pyroelectric detector heartbeat air message adopts the method repeating transmission 3 identical messages in 40ms sanctified by usage in the industry, between message, the interval in transmission time is random--the propagation delay time between first and second messages is: (n is integer to 6ms+n*1ms, 0≤n≤3), the propagation delay time between second and the 3rd message is 18ms+n*ms(0≤n≤11).
As shown in Figure 7, according to the self-adaptive detection method of accumulator energy storage state, namely base oneself upon the electric energy adjustment human body detection of accumulator and the message transmission frequency of heartbeat;
When the electric energy that Discharge_C22=2211, i.e. super capacitor C22 store is powered, the message transmission frequency of human body detection and heartbeat is 9 heartbeat air message in 10 points, 1 human body detection air message;
When the electric energy that Discharge_C22=2200andDischarge_C23=2311, i.e. super capacitor C23 store is powered, electric energy, the i.e. Sample_V of the message transmission frequency foundation C23 of human body detection and heartbeat
c23voltage sample value adjusts--in 10 points, send 9 heartbeat air message, 1 human body detection air message, in 110 points, send 9 heartbeat air message, 1 human body detection air message, after maintaining degradation basic safety protection function basis on extend working time of pyroelectric detector as far as possible, program realizes adopting calculated amount minimum, the simplest form of form, super capacitor C23[5.000V, 1.1*2.6V] interval division becomes 10 minizones: [5V, 4.786V), [4.786V, 4.572V), [4.572V, 4.358V), [4.358V, 4.144V), [4.144V, 3.930V), [3.930V, 3.716V), [3.716V, 3.502V), [3.502V, 3.288V), [3.288V, 3.074V), [3.074V, 1.1*2.6V] corresponding 10 points respectively, 20 points, 30 points, 40 points, 50 points, 60 points, 70 points, 80 points, 90 points, 100 points, 110 points send 9 heartbeat air message, 1 human body detection air message,
The traditional mechanism that pyroelectric detector safety-protection system follows pyroelectric sensor output signal when detecting human body, output signal triggers single-chip microcomputer again, there is safety-protection system and cannot grasp the real-time working condition of pyroelectric detector, comprise the shortcoming of accumulator energy state in capacitation pyroelectric detector in traditional mechanism, the strong behave overcome the deficiency is exactly Heart-Beat Technology; Heartbeat message, according to accumulator energy storage state self-adaptative adjustment transmission frequency, has been taken into account safety-protection system and has been grasped pyroelectric detector real-time working condition, from the limited double requirements of capacitation pyroelectric detector electric energy.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (6)
1. from capacitation pyroelectric detector, comprise pyroelectric sensor (4), Micro Energy Lose management circuit (2) that Fei Nier lens (5), low light level solar panel (3), energy acquisition store, single-chip microcomputer (1) and shell structure (6); Described Fei Nier lens (5) are positioned at the top of the sensitivity unit that pyroelectric sensor (4) has, the Micro Energy Lose management circuit (2) that described pyroelectric sensor (4) and energy acquisition store and single-chip microcomputer (1) are connected, and the Micro Energy Lose management circuit (2) that energy acquisition stores is connected with low light level solar panel (3) and single-chip microcomputer (1); The Micro Energy Lose management circuit (2) that single-chip microcomputer (1), energy acquisition store and pyroelectric sensor (4) are fixed on the inside of shell structure (6), and low light level solar panel (3) and Fei Nier lens (5) are fixed on shell structure (6) surface;
Described low light level solar panel (3) is collected ambient light energy and is converted into the Micro Energy Lose management circuit (2) that electric energy exports the storage of described energy acquisition to; The electric energy that the Micro Energy Lose management circuit (2) process low light level solar panel (3) that described energy acquisition stores exports, and to the charging accumulator that the Micro Energy Lose management circuit (2) that energy acquisition stores has; Under the United Dispatching of the Micro Energy Lose management circuit (2) stored at described energy acquisition, the electric energy of the electric energy that low light level solar panel (3) exports and the electric discharge of described accumulator form pyroelectric detector from capacitation power supply, power to single-chip microcomputer (1) and pyroelectric sensor (4) from capacitation power supply; Luxuriant and rich with fragrance Neil lens (5) and pyroelectric sensor (4) combined detection human motion, described single-chip microcomputer (1) inputs signal that described pyroelectric sensor (4) uploads and controls the Micro Energy Lose management circuit (2) that energy acquisition stores, and according to the energy storage state transmission frequency of described accumulator adjustable and characterize the EnOcean heartbeat message of pyroelectric detector real-time working condition; Shell structure (6) is for fixing above-mentioned parts; It is characterized in that:
The described circuit from capacitation pyroelectric detector comprises SOLARSC4155I, tantalum electric capacity C21, Large Copacity super capacitor C22 and C23, STM300, latch 74HC573, pyroelectric sensor LHI968, field effect transistor Q21, Q22, Q23 and Q24, triode Q25, Q26, Q27 and Q28 and diode D21, D22, D23, D24 and D25;
" ﹢ " pole of described SOLARSC4155I is connected with diode D21 anode and field effect transistor Q21 source electrode, "-" pole ground connection of described SOLARSC4155I, and diode D21 negative electrode is connected with 3 with tantalum electric capacity C21 " ﹢ " pole and STM300 pin two; Tantalum electric capacity C21 "-" pole ground connection, the two ends of resistance R21 are connected with gate pole with the source electrode of field effect transistor Q21 respectively; Field effect transistor Q21 gate pole is connected with triode Q25 collector, triode Q25 grounded emitter, and triode Q25 base stage is connected with one end of resistance R22, and the other end of resistance R22 is connected with STM300 pin 30; Field effect transistor Q21 drain electrode is connected with diode D23 anode and field effect transistor Q23 source electrode, diode D23 negative electrode is connected with diode D22 anode, diode D22 negative electrode is connected with diode D21 negative electrode, and the two ends of resistance R25 are connected with gate pole with the source electrode of field effect transistor Q23 respectively; Field effect transistor Q23 gate pole is connected with triode Q27 collector, triode Q27 grounded emitter, and triode Q27 base stage is connected with one end of resistance R26, and the other end of resistance R26 is connected with latch 74HC573 pin one 9; Field effect transistor Q23 drain electrode is connected with diode D25 anode, diode D25 negative electrode is connected with diode D24 anode, diode D24 negative electrode is connected with diode D21 negative electrode, one end of resistance R23 is connected with STM300 pin 30, the other end of resistance R23 is connected with electric capacity C24 one end and triode Q26 base stage, and the other end of electric capacity C24 is connected with triode Q26 collector; Triode Q26 grounded emitter, triode Q26 collector is connected with field effect transistor Q22 gate pole, and the two ends of resistance R24 are connected with source electrode with the gate pole of field effect transistor Q22 respectively; Field effect transistor Q22 drain electrode is connected with diode D22 anode, field effect transistor Q22 source electrode is extremely connected with Large Copacity super capacitor C22 "+", Large Copacity super capacitor C22 "-" pole ground connection, one end of resistance R27 is connected with latch 74HC573 pin one 9, the other end of resistance R27 is connected with one end of electric capacity C25 and triode Q28 base stage, and the other end of electric capacity C25 is connected with triode Q28 collector; Triode Q28 grounded emitter, triode Q28 collector is connected with field effect transistor Q24 gate pole, and the two ends of resistance R28 are connected with source electrode with field effect transistor Q24 gate pole respectively; Field effect transistor Q24 drain electrode is connected with diode D24 anode, field effect transistor Q24 source electrode is extremely connected with Large Copacity super capacitor C23 "+", Large Copacity super capacitor C23 "-" pole ground connection, latch 74HC573 pin two 0 is connected with diode D22 anode, ground connection after latch 74HC573 pin one 0 and pin one parallel connection, the pin one 1,2 of latch 74HC573 is connected with the pin one 6,15 of STM300 respectively; The pin 9,10,1,4,32 of STM300 respectively with Large Copacity super capacitor C22 "+" pole, Large Copacity super capacitor C23 "+" pole, one end of antenna E11, resistance R11 is connected, the other end of resistance R11 is connected with STM300 pin 33; The pin 33,2 of STM300 is connected with the pin 3,2 of pyroelectric sensor LHI968 respectively, pyroelectric sensor LHI968 pin one ground connection;
The detectable signal that pyroelectric sensor LHI968 pin 3 exports is to STM300 pin 33, detectable signal can wake the STM300 of deep sleep up, STM300 pin 4 connects antenna E11, according to the EnOcean heartbeat message of the adjustable sign pyroelectric detector real-time working condition of Micro Energy Lose management circuit accumulator energy storage state transmission frequency that energy acquisition stores;
The voltage of tantalum electric capacity C21, Large Copacity super capacitor C22 and C23 is gathered by the pin two, 9,10 of STM300 respectively; When STM300 pin 30 exports high or low level, on the one hand field effect transistor Q21 conducting corresponding to triode Q25 or cut-off, Large Copacity super capacitor C22 charge circuit is corresponding opens or closes, field effect transistor Q22 conducting corresponding to triode Q26 or cut-off on the other hand, Large Copacity super capacitor C22 discharge loop is corresponding to be opened or closed, and the delay circuit that R24 and electric capacity C24 forms simultaneously makes Large Copacity super capacitor C22 discharge loop time-delay closing;
The pin one 5,16 of STM300 is connected with the pin two, 11 of latch 74HC573 respectively, and the pin one 9 of latch 74HC573 controls the charge or discharge of Large Copacity super capacitor C23; When STM300 pin one 6 high level, pin one 5 high or low level, the pin of latch 74HC573 mutually should 19 high or low level, on the one hand field effect transistor Q23 conducting corresponding to triode Q27 or cut-off, Large Copacity super capacitor C23 charge circuit open or close, and the delay circuit that field effect transistor Q24 and triode Q28 conducting or cut-off on the other hand, Large Copacity super capacitor C23 discharge loop be corresponding to be opened or closed, resistance R28 and electric capacity C25 forms simultaneously makes Large Copacity super capacitor C23 discharge loop time-delay closing;
The accumulator of the Micro Energy Lose management circuit that energy acquisition stores is made up of low capacity tantalum electric capacity C21, Large Copacity super capacitor C22 and C23; Tantalum electric capacity C21 is used for rapid charge, when tantalum electric capacity C21 voltage reaches the operating voltage of STM300, power to STM300, start pyroelectric detector, the electric energy that SOLARSC4155I produces charges to tantalum electric capacity C21, if SOLARSC4155I also has the voltage of dump energy, foundation Large Copacity super capacitor C22 and C23, or unloading is to Large Copacity super capacitor C22 or C23 or the dump energy giving up SOLARSC4155I generation; Large Copacity super capacitor C22 and C23 stores the dump energy that SOLARSC4155I collects, SOLARSC4155I electricity shortage or when not powering, and the long-term stability of being maintained pyroelectric detector by Large Copacity super capacitor C22 is run; Large Copacity super capacitor C23 is the Hot Spare of C22, when the electric energy that SOLARSC4155I and Large Copacity super capacitor C22 store cannot ensure the electrical energy demands of pyroelectric detector or when Large Copacity super capacitor C22 lost efficacy, the long-term stability of being maintained pyroelectric detector by Large Copacity super capacitor C23 is run.
2. as claimed in claim 1 from capacitation pyroelectric detector, it is characterized in that: the model of described pyroelectric sensor (4) is LHI968, the model of described single-chip microcomputer (1) is STM300, and the model of described low light level solar panel is SOLARSC4155I.
3. as claimed in claim 1 from capacitation pyroelectric detector, it is characterized in that: the discharge and recharge flow process of the accumulator of the Micro Energy Lose management circuit that described energy acquisition stores is made up of initialization and accumulator voltage sample flow process, the charging flow of accumulator and the discharge flow path of accumulator;
The variable of the discharge and recharge flow process of the accumulator of the Micro Energy Lose management circuit that described energy acquisition stores is as follows:
Sample_V
c21, Sample_V
c22, Sample_V
c23for the sampled value of C21, C22, C23 voltage, Rating_V
c21, Rating_V
c22, Rating_V
c23for the higher limit of C21, C22, C23 rated operational voltage, namely the higher limit of C21, C22 and C23 rated operational voltage is the higher limit 5V of STM300 rated operational voltage, 0.572*Rating_V
c21, 0.572*Rating_V
c22, 0.572*Rating_V
c23be then the lower limit of C21, C22, C23 rated operational voltage, namely the lower limit of C21, C22 and C23 rated operational voltage is 1.1 times of STM300 rated operational voltage lower limit 2.6V;
C21 discharge variable: Discharge_C21=0,2100,2111 be respectively initial value, forbid electric discharge, allow electric discharge;
C22 charge variable: Charge_C22=0,220,221 is respectively initial value, forbids charging, allows charging;
C22 discharge variable: Discharge_C22=0,2200,2211 be respectively initial value, forbid electric discharge, allow electric discharge;
C23 charge variable: Charge_C23=0,230,231 is respectively initial value, forbids charging, allows charging;
C23 discharge variable: Discharge_C23=0,2300,2311 be respectively initial value, forbid electric discharge, allow electric discharge;
C21 discharges, the criterion of C22 and C23 charging and discharging:
Sample_V
c21<Rating_V
c21, Discharge_C21=2100, otherwise Discharge_C21=2111;
Sample_V
c22<Rating_V
c22, Charge_C22=221, otherwise Charge_C22=220;
Sample_V
c22<0.572*Rating_V
c22, Discharge_C22=2200, otherwise Discharge_C22=2211;
Sample_V
c23<Rating_V
c23, Charge_C23=231 otherwise Charge_C22=230;
Sample_V
c23<0.572*Rating_V
c23, Discharge_C23=2300, otherwise Discharge_C22=2311;
The concrete steps of charging accumulator and discharge flow path are as follows:
(1) initialization, Discharge_C21=0, Charge_C22=0, Discharge_C22=0, Charge_C23=0, Discharge_C23=0,
(2) accumulator voltage sample, Sample_V
c21, Sample_V
c22, Sample_V
c23assignment,
(3), according to C21 electric discharge, the criterion of the charging and discharging of C22 and C23, to Discharge_C21, Charge_C22, Discharge_C22, Charge_C23, Discharge_C23 assignment;
(4) the charging flow of accumulator:
1. Discharge_C21=2100, returns;
②Discharge_C21＝2111，
2.-1:Charge_C22=221, allows C22 charging, forbids that C23 charges;
2.-2:Charge_C22=220andCharge_C23=231, allows C23 charging, forbids that C22 charges;
2.-3:Charge_C22=220andCharge_C23=230, returns;
(5) the discharge flow path of accumulator:
1. Discharge_C22=2211, allows C22 electric discharge, forbids that C23 discharges;
2. Discharge_C22=2200andDischarge_C23=2311, allows C23 electric discharge, forbids that C22 discharges;
3. Discharge_C22=2200andDischarge_C23=2300, forbids C22 electric discharge, forbids C23 electric discharge, returns.
4. as described in claim arbitrary in claim 1-3 from capacitation pyroelectric detector, it is characterized in that: described follows EnOcean agreement from the human body detection air message of capacitation pyroelectric detector, human body detection air message is made up of four territories: RORG territory: the communication packet type of 1 byte, DATA territory: the wireless packet data of 1 byte, TXID territory: unique ID and STATUS & HASH territory, the whole world of 4 bytes: the network state of 2 bytes and data check; Wherein the BIT70/1 in DATA territory indicate without/have people, BIT6-BIT0 represents the number percent of stored energy or nominal energy, and 0 represents that accumulator noenergy, 127 represents has reached accumulator nominal energy.
5. as described in claim arbitrary in claim 1-3 from capacitation pyroelectric detector, it is characterized in that: described follows EnOcean agreement from the heartbeat air message of capacitation pyroelectric detector, heartbeat air message is made up of two territories: DATA territory: the wireless packet data of 1 byte and TXID territory: the unique ID in the whole world of 4 bytes, wherein the BIT70/1 in DATA territory is of equal value, all the online operating mode of expression pyroelectric detector is normal, BIT6-BIT0 represents the number percent of stored energy or nominal energy, and 0 represents that accumulator noenergy, 127 represents reaches nominal energy.
6. as claimed in claim 1 from capacitation pyroelectric detector, it is characterized in that:
Discharge_C22=2211, when the electric energy that namely Large Copacity super capacitor C22 stores is powered, the message transmission frequency of human body detection and heartbeat is 9 heartbeat air message in 10 points, 1 human body detection air message;
Discharge_C22=2200andDischarge_C23=2311, when the electric energy that namely Large Copacity super capacitor C23 stores is powered, the electric energy of the message transmission frequency foundation C23 of human body detection and heartbeat, i.e. Sample_V
c23the adjustment of voltage sample value sends 9 heartbeat air message, 1 human body detection air message in 10 points, in 110 points, send 9 heartbeat air message, 1 human body detection air message, after maintaining degradation basic safety protection function basis on extend working time of pyroelectric detector as far as possible, program realizes adopting calculated amount minimum and the simplest form of form, super capacitor C23 [5.000V, 1.1*2.6V] interval division becomes 10 minizones: [5V, 4.786V], [4.786V, 4.572V], [4.572V, 4.358V], [4.358V, 4.144V], [4.144V, 3.930V], [3.930V, 3.716V], [3.716V, 3.502V], [3.502V, 3.288V], [3.288V, 3.074V], [3.074V, 1.1*2.6V] corresponding 10 points respectively, 20 points, 30 points, 40 points, 50 points, 60 points, 70 points, 80 points, 90 points, 100 points, 110 points send 9 heartbeat air message, 1 human body detection air message.
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| CN102230824A (en) * | 2011-03-25 | 2011-11-02 | 刘瑜 | Novel infrared human body induction device |
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| KR102054312B1 (en) * | 2012-07-17 | 2019-12-10 | 한국전자통신연구원 | sensor for detecting infrared of human body and electric device having the same |
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