CN103021051B - Photovoltaic triggering circuit, optical signal receive control equipment and decoding method thereof - Google Patents
Photovoltaic triggering circuit, optical signal receive control equipment and decoding method thereof Download PDFInfo
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Abstract
The invention discloses a photovoltaic triggering circuit which comprises a photoelectric conversion unit, an isolator and an output end, wherein the photoelectric conversion unit is used for converting optical pulse into an electric pulse signal, the isolator is used for generating potential difference through the electric pulse signal so as to release an electrical signal, and the output end is used for triggering a power supply unit of optical signal receive control equipment to be electrified according to the electrical signal. The invention also discloses the optical signal receive control equipment additionally provided with the photovoltaic triggering circuit, the power supply unit of the optical signal receive control equipment can be electrified so as to start when an optical pulse signal is received, the power supply unit is in a dormant state with low power consumption when the optical pulse signal is not available, and the optical signal receive control equipment with the photovoltaic triggering circuit is energy-saving and environment-friendly; and in addition, the invention also discloses a decoding method of the optical signal receive control equipment, and the decoding method can notably improve the safety performance of the optical signal receive control equipment.
Description
Technical field
The present invention relates to optical communication field, relate to particularly the coding/decoding method of a kind of optical trigger and light signal receiving control apparatus, light signal receiving control apparatus.
Background technology
Wireless light communication technology claims again visible ray communication, and its high-frequency by LED light source glimmers to communicate, and has light to represent 1, unglazedly represents 0, and its transfer rate is up to gigabit per second.Wireless light communication technology is because its data are difficult for disturbed and catch, and optical communication equipment is made simple and should not be damaged or demagnetization, can be used for making wireless optical encryption key pair.Compared with microwave technology, wireless light communication has quite abundant frequency spectrum resource, and this is that general microwave communication and radio communication are incomparable; Visible light communication can be suitable for any communication protocol, be applicable to any environment simultaneously; Aspect security, it compares traditional magnetic material, without worrying demagnetization problem, more needn't worry that Content of Communication stolen by people; The equipment of wireless light communication sets up convenient flexibly, and with low cost, is applicable to extensive popularization and application.
Gate control system is exactly the system of exit and entrance being carried out to control, and it is to develop on traditional door lock basis.Traditional mechanical door lock is only simple mechanical hook-up, and no matter how reasonable structural design is, and how firm material is, and people can open it by various means.Pretty troublesome at a lot of passage of discrepancy personnel (office block, hotel guest room) key management, key loss or personnel change and lock & key will be changed together.For addressing these problems, just there is electronic magnetic card lock, electronic password lock, the problem of electronic magnetic card lock is that information is easily replicated, and between card and card-reading machine, greatly, failure rate is high in wearing and tearing, and safety coefficient is low; The problem of electronic password lock is that password is easily revealed, and has no way of again having looked into, and safety coefficient is very low.Meanwhile, the product in this period is arranged on outdoors owing to mostly adopting Card Reader part (Password Input) and control section to be combined, and is easy to by people at the outdoor lock of opening.In recent years along with the development of contactless card technology, biological identification technology, there is the system of the various technology such as induction cassette gate control system, fingerprint entrance guard system, but induction cassette gate control system complex operation, fingerprint entrance guard system has fingerprint and is easily stolen, the shortcomings such as client is easily damaged, and discrimination is low.
For addressing the above problem, photon gate control system is arisen at the historic moment, photon gate control system generally includes optical signal launcher and light signal receiving control apparatus, optical signal launcher is for launching the light signal that contains unlocking cipher information, light signal receiving control apparatus is resolved light signal after receiving light signal, if light signal contains unlocking cipher, controls door lock and opens, otherwise, close.Light signal receiving control apparatus is used dry cell power supply, power consumption is larger, need often to change battery, to using, bring inconvenience, excessive use dry cell is also to environment, therefore, how light signal receiving control apparatus is carried out to Design of power saving, become photon gate control system and need badly the problem of solution.
What initial optical signal launcher coding adopted is to represent signal with the number of high level, and each high level lasting time is about 2ms left and right, every group of maximum four high level, and every group of level number represents 2bit signal.For example, when high level number is 1 in one group of signal, represent 00; When high level number is 2, representation signal 01, when high level number is 3 interval scale signals 10; When high level number is 4, representation signal 11.Between every group of signal, with low level delay, distinguish, be about 30ms low level time delay.
High level and low level all have certain time delay, and therefore, light signal receiving control apparatus is receiving during signal and can decode to the received signal time delay by the high level and the low level that detect on the I/O pin of its control module.Using electrical level rising along the beginning as a high level, when rising edge being detected, start timing, when high level lasting time is greater than 1.5us, think effective signal, record high level number, using negative edge as a low level beginning, when detecting negative edge, I/O pin starts timing, when being greater than 20ms, low duration thinks the end of one group of signal, when being greater than 75ms, I/O pin low duration thinks that signal receives or signal receive interruption, restarts detection signal.
The high level number that the coding/decoding method corresponding with above-mentioned existing coding method need be exported and detect is more, causes signal very unstable, and signal entirety transmitting time and time of reception longer, data rate is slow.
Summary of the invention
The technical matters that the present invention solves is, to in light signal receiving control apparatus, add optical trigger, make light signal receiving control apparatus power supply unit electrifying startup when receiving light pulse signal, while there is no light pulse signal in dormant state, needn't consume electric power, with the light signal receiving control apparatus energy-saving and environmental protection of optical trigger, in addition, light signal receiving control apparatus coding/decoding method of the present invention, can improve the signal decoding time, improve the security performance of light signal receiving control apparatus.
The technical solution adopted for the present invention to solve the technical problems is: a kind of optical trigger is provided, for the power supply unit that triggers electric lock, powers on,
A kind of optical trigger, comprising:
Photoelectric conversion unit, for being converted to electric impulse signal by light pulse;
Isolator, for producing potential difference (PD) by electric impulse signal, discharges electric signal;
Output terminal, powers on for triggering according to described electric signal the power supply unit being connected with described output terminal;
Signal amplification circuit, connect described isolator and described output terminal, comprise the first triode and the second triode being connected with described the first triode, wherein, described photoelectric conversion unit is connected with one end of described isolator, the other end of described isolator is connected with the base stage of described the first triode, the emitter of described the first triode is connected with the base stage of described the second triode, the equal ground connection of emitter of the emitter of described the first triode and described the second triode, the collector of described the second triode is connected with described output terminal.
Further, isolator is connected between described photoelectric conversion unit and described output terminal.
Further, photoelectric conversion unit is photodiode.
Further, isolator is capacitance.
Further, output terminal is wire.
Further, light pulse is greater than or equal to 100Lux in illumination, and the duration triggers described power supply unit while being greater than or equal to 1ms and powers on.
The present invention also provides a kind of light signal receiving control apparatus, the control module that comprises light signal receiving element, be connected with light signal receiving element, the power supply unit being connected with control module, also comprise and be connected to the optical trigger powering on for triggering the power supply unit of light signal receiving control apparatus between control module and power supply unit, described optical trigger, comprising:
Photoelectric conversion unit, for being converted to electric impulse signal by light pulse;
Isolator, for producing potential difference (PD) by electric impulse signal, discharges electric signal;
Output terminal, powers on for trigger described light signal receiving control apparatus power supply unit according to described electric signal;
Signal amplification circuit, connect described isolator and described output terminal, comprise the first triode and the second triode being connected with described the first triode, wherein, described photoelectric conversion unit is connected with one end of described isolator, the other end of described isolator is connected with the base stage of described the first triode, the emitter of described the first triode is connected with the base stage of described the second triode, the equal ground connection of emitter of the emitter of described the first triode and described the second triode, the collector of described the second triode is connected with described output terminal.
Further, isolator is connected between described photoelectric conversion unit and described output terminal.
Further, photoelectric conversion unit is photodiode.
Further, isolator is capacitance.
Further, output terminal is wire.
Further, light pulse is equal to, or greater than 100Lux in illumination, and the duration triggers described power supply unit while being equal to, or greater than 1ms and powers on.
Further, power supply unit comprises feed circuit and battery.
Further, battery comprises ickel-cadmium cell or Ni-MH battery or lithium ion battery.
Further, photoelectric conversion unit is photodiode.
Further, light signal receiving element is photodiode.
Further, also comprise for by the demodulating unit of visible light signal demodulation.
Further, demodulating unit is demodulator circuit.
Further, light signal receiving control apparatus is light smart lock, electric lock, commercial unit, locker or office equipment.
The present invention also provides a kind of light signal receiving control apparatus coding/decoding method, for above-mentioned light signal receiving control apparatus, comprises the following steps:
M1. the start-up portion using signal rising edge as high level, the control module of light signal receiving control apparatus starts timing after rising edge being detected, and when described high level lasting time is greater than the first default duration, described control module records high level number;
M2. using signal negative edge as low level start-up portion, the control module of light signal receiving control apparatus starts timing while negative edge being detected, when described low duration is greater than the second default duration, described control module is one group of signal ended of record automatically;
M3. the control module of light signal receiving control apparatus calculates the cycle of every group of signal by synchronous clock, according to the cycle identification low level signal of described every group of signal.
Further, when there is high level signal after one group of signal ended in the first Preset Time section, described light signal receiving control apparatus is revised clock according to the time of described high level signal and is automatically recorded described high level signal to next group signal.
Further, when there is not high level signal after one group of signal ended in the second Preset Time section, described light signal receiving control apparatus determines that the signal receiving is the low level signal of next group signal.
Further, described coding/decoding method is applicable to the stroboscopic visible light signal decoding that optical signal launcher or mobile phone send.
Further, the high and low level number of every group of signal that the visible light signal coded system sending according to optical signal launcher defines described light signal receiving control apparatus record represents implication.
Further, when the described low level signal duration is greater than the 3rd default duration, signal receives or signal receive interruption, and the control module of light signal receiving control apparatus restarts detection signal.
Beneficial effect of the present invention is, a kind of optical trigger is provided, to in light signal receiving control apparatus, add optical trigger, make power supply unit electrifying startup when receiving light pulse signal of light signal receiving control apparatus, while there is no light pulse signal in dormant state, power consumption is lower, light signal receiving control apparatus with optical trigger is energy-conservation, environmental protection, the present invention also provides a kind of light signal receiving control apparatus coding/decoding method in addition, after being encrypted, deciphers by the method optical signal launcher, can improve the signal decoding time and improve the security performance of light signal receiving control apparatus.
Accompanying drawing explanation
Fig. 1 is optical trigger schematic diagram of the present invention.
Fig. 2 is light signal receiving control apparatus schematic diagram of the present invention.
Fig. 3 is light signal receiving control apparatus coding/decoding method flow chart of steps of the present invention.
Fig. 4 is first preferred embodiment of the invention signal schematic representation.
Fig. 5 is second preferred embodiment of the invention signal schematic representation.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
Refer to Fig. 1 optical trigger preferred embodiment structural representation, comprise photoelectric conversion unit 41 for light signal being converted to electric signal, for hindering the isolator 42 of DC current and for exporting the output terminal 44 of control signal, photoelectric conversion unit 41 receives light pulse signal and light pulse is converted to electric impulse signal, electric impulse signal makes isolator 42 two ends appearance potentials poor, isolator 42 discharges, and the power supply unit that output terminal 44 output signals trigger light signal receiving control apparatus powers on.
Optical trigger of the present invention also comprises signal amplification circuit 43, and signal amplification circuit 43 is amplification circuit of electrical signal, comprises the first triode and the second triode.One embodiment preferably according to the present invention, photoelectric conversion unit is connected with one end of isolator 42, the other end of isolator 42 is connected with the base stage of the first triode, the emitter of the first triode is connected with the base stage of the second triode, the equal ground connection of emitter of the emitter of the first triode and the second triode, the collector of the second triode is connected with output terminal, and output terminal is connected with power supply unit, certainly, signal amplification circuit 43 can also adopt the form of other amplification circuit of electrical signal.
Need to know, photoelectric conversion unit 41 is photodiode, or other can convert visible light signal to the device of electric signal.
The principle of work of optical trigger is: photoelectric conversion unit 41 receives light pulse signal and light pulse is converted to electric impulse signal, electric impulse signal makes isolator 42 two ends appearance potentials poor, isolator 42 discharges, electric signal isolator 42 being discharged by signal amplification circuit 43 amplifies, and the power supply unit that the signal after output terminal 44 outputs are amplified triggers light signal receiving control apparatus powers on.Photon lock power supply unit of the present invention is that low level triggers, therefore, signal amplification circuit 43 output low levels that adopt, output terminal 44 output signals are low level, can trigger above-mentioned power supply unit and start, should be appreciated that if power supply unit is high level and trigger, also can adopt the signal amplification circuit of output high level signal, output high level triggers power supply unit and powers on.
What need to know is, light pulse is greater than or equal to 100Lux in illumination, and the duration of above-mentioned light pulse is while being greater than or equal to 1ms, photoelectric conversion unit 41 receives this light pulse signal and converts thereof into electric impulse signal, electric impulse signal makes isolator 42 two ends appearance potentials poor, isolator 42 discharges, electric signal isolator 42 being discharged by signal amplification circuit 43 amplifies, the power supply unit that signal after output terminal 44 outputs are amplified triggers light signal receiving control apparatus powers on, and power supply unit starts.
In the preferred embodiment of the present invention, light pulse is 110Lux, duration is that 1.5ms or light pulse illumination are 120Lux, duration is 2ms or light pulse is while 130Lux and duration being 2.5ms or light pulse illumination is 140Lux in illumination, duration is that 3ms or light pulse illumination are 150Lux, and the duration is that power supply unit that 3.5ms triggers light signal receiving control apparatus powers on and all can produce good effect.
Referring to Fig. 2 light signal receiving control apparatus schematic diagram, the present invention also provides a kind of light signal receiving control apparatus, in one of the present invention preferably in embodiment, light signal receiving control apparatus comprises the light signal receiving element 1 receiving for light signal, the control module 2 of encrypting for the electric signal that light signal receiving element 1 is changed, for the power supply unit 3 of powering and trigger the optical trigger 4 that power supply unit 3 powers on.Light signal receiving control apparatus can be light smart lock, electric lock, commercial unit, locker or office equipment.
Optical trigger 4 comprises: photoelectric conversion unit 41, for converting light signal to electric signal; Isolator 41, for hindering DC current; Output terminal 44, for exporting control signal.Wherein, photoelectric conversion unit receives light pulse signal and light pulse is converted to electric impulse signal, and electric impulse signal makes isolator two ends appearance potential poor, isolator electric discharge, and output terminal 44 output signals trigger light signal receiving control apparatus power supply unit and power on.
Should be appreciated that light signal receiving element 1 is for photodiode, or other can receive the device of visible ray.Control module 2 is single-chip microcomputer, and power supply unit 3 comprises feed circuit and battery, and battery can be selected lithium battery, ickel-cadmium cell or Ni-MH battery.
Existing photoswitch start-up technique is carried out switch based on light intensity mostly, opens during light intensity, when light is weak, closes.But wider in outdoor or indoor light intensity variation range while using due to door lock, while needing only light intensity, circuit just starts automatically, expends electric weight higher.The present invention will add optical trigger in light signal receiving control apparatus, make light signal receiving control apparatus power supply unit electrifying startup when receiving light pulse signal, even while there is no light pulse signal light intensity compared with high light signal receiving control apparatus also in dormant state, dormant state power consumption is very low, therefore with the light signal receiving control apparatus energy-saving and environmental protection of optical trigger.
The coding method of a kind of light signal receiving control apparatus, the stroboscopic visible ray coding that the stroboscopic visible ray that mobile phone flashlight can be sent and optical signal launcher send, by the number of high level, represent the signal of 2 bits, the signal of 2 bits has 4 types: 00, 01, 10, 11, high level is 0 namely during low level, also can represent the signal of 2 bits, during coding, the signal of high level number and 2 bits is one to one, the signal of 2 bits is divided by group, byte of signal indication of four group of 2 bit, the cycle of every group of signal transmission is identical, adopt the method for fixed cycle to send different signals, the transmitting time of signal is not because the difference of transmitted signal changes, and then reduce low level time delay in every group of signal, signal is sent more stable, speed is faster.
The cycle of every group of signal transmission is preferably 57-63ms, in every group of signal, between low level time delay, every group of signal, low level time delay and sum time delay of every group of signal high level equal cycle of every group of signal transmission, high level time delay is for being greater than 1ms, preferably 5ms, 3ms.
In every group of signal, be not more than the half of time delay of low level between every group of signal low level time delay, according to low level between every group of signal, can distinguish two groups of different signals time delay.
When mobile phone flashlight or optical signal launcher send the visible light frequency of stroboscopic and be greater than 1ms, this stroboscopic visible ray is encoded in available above-mentioned coding method, preferably 5ms, 10ms.
The invention provides a kind of photon receiving end coding/decoding method of light signal receiving control apparatus coding/decoding method, for above-mentioned coding method, by Fig. 3 light signal receiving control apparatus of the present invention coding/decoding method flow chart of steps, comprise the following steps:
M1. the start-up portion using signal rising edge as high level, the control module of light signal receiving control apparatus starts timing after rising edge being detected, and when described high level lasting time is greater than 1ms, described control module records high level number;
M2. using signal negative edge as low level start-up portion, the control module of light signal receiving control apparatus starts timing while negative edge being detected, and when described low duration is greater than 20ms, described control module is one group of signal ended of record automatically;
M3. the control module of light signal receiving control apparatus calculates the cycle of every group of signal by synchronous clock, according to the cycle identification low level signal of described every group of signal.
Should be appreciated that when the low level signal duration is greater than 75ms, signal receives or signal receive interruption, and the control module of light smart lock restarts detection signal, preferably 80ms.
When there is high level signal in 40ms after one group of signal ended, photon receiving end is revised clock according to the time of high level signal and is automatically recorded high level signal to next group signal.
When there is not high level signal in 60ms after one group of signal ended, photon receiving end determines that the signal receiving is the low level signal of next group signal.
Coding/decoding method of the present invention is applicable to the stroboscopic visible light signal decoding that optical signal launcher or mobile phone send.
According to the high and low level number of every group of signal of light signal receiving control apparatus visible light signal coded system definition photon receiving end record, represent implication.
Embodiment 1
If low level represents 00, 1 high level represents 01, 2 high level represent 10, 3 high level represent 11, the signal transmission cycle is fixed as 59ms, be 5ms the time delay of high level, the signal schematic representation sending by this coding method is referring to Fig. 4, first preferred embodiment of the invention signal schematic representation, by low level, represent the signal of 2 bits, reduced the number of high level, make signal more stable, simultaneously, the total transmitting time of signal can not change because transmitted signal is different, the signal that the present embodiment light signal receiving control apparatus sends is 01110010, light signal receiving control apparatus is decoded to this signal:
M1. the start-up portion using rising edge as high level, light signal receiving control apparatus starts timing after rising edge being detected, when high level lasting time is 1.5ms, the high level number of light signal receiving control apparatus tracer signal is respectively 1,3,0,2;
M2. using negative edge as low level start-up portion, light signal receiving control apparatus starts timing while negative edge being detected, when low duration is 25ms, light signal receiving control apparatus is one group of signal ended of record automatically, four groups of signal low durations of the present embodiment all exceed 20ms, therefore photon receiving end can record one group of signal ended automatically, when there is not high level signal in 60ms after one group of signal ended, light signal receiving control apparatus determines that the signal receiving is the low level signal 00 of next group signal;
M3. light signal receiving control apparatus calculates the cycle of every group of signal by synchronous clock, and one signal period of the preferred embodiment of the present invention is fixed as 59ms, and therefore the signal of decoding is 01110010.
Embodiment 2
If 1 high level represents that 00,2 high level represents that 10,3 high level represent that 01,4 high level represents 11, the signal transmission cycle is fixed as 63ms, be 3ms the time delay of high level, the signal schematic representation sending by this coding method is referring to Fig. 5, second preferred embodiment of the invention signal schematic representation, the signal that the present embodiment sends is 00100111, and light signal receiving control apparatus is decoded to this signal:
M1. the start-up portion using rising edge as high level, light signal receiving control apparatus starts timing after rising edge being detected, when high level lasting time is 1ms, the high level number of light signal receiving control apparatus tracer signal is respectively 1,2,3,4, when there is high level signal in 40ms after one group of signal ended, light signal receiving control apparatus is revised clock according to the time of high level signal and is automatically recorded high level signal to next group signal.
M2. using negative edge as low level start-up portion, light signal receiving control apparatus starts timing while negative edge being detected, when low duration is 22ms, photon receiving end is one group of signal ended of record automatically, four groups of signal low durations of the present embodiment all exceed 20ms, and therefore light signal receiving control apparatus can record one group of signal ended automatically;
M3. light signal receiving control apparatus calculates the cycle of every group of signal by synchronous clock, and the preferred embodiment of the present invention binary signal cycle is fixed as 63ms, and therefore the signal of decoding is 00100111.
Above embodiment is only schematic, during coding, 1 high level also can represent 10 or 01,2 high level also can represent 00 or 11, the one-to-one relationship that is to say high level number and 2 bit signals can need to arrange according to user, and therefore light signal receiving control apparatus coding/decoding method of the present invention can adjust according to the variation of coded system.
Above the embodiment of the present invention is described in detail, has applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (25)
1. an optical trigger, is characterized in that, comprising:
Photoelectric conversion unit, for being converted to electric impulse signal by light pulse;
Isolator, for producing potential difference (PD) by electric impulse signal, discharges electric signal;
Output terminal, powers on for triggering according to described electric signal the power supply unit being connected with described output terminal;
Signal amplification circuit, connect described isolator and described output terminal, comprise the first triode and the second triode being connected with described the first triode, wherein, described photoelectric conversion unit is connected with one end of described isolator, the other end of described isolator is connected with the base stage of described the first triode, the emitter of described the first triode is connected with the base stage of described the second triode, the equal ground connection of emitter of the emitter of described the first triode and described the second triode, the collector of described the second triode is connected with described output terminal.
2. optical trigger according to claim 1, is characterized in that, described isolator is connected between described photoelectric conversion unit and described output terminal.
3. optical trigger according to claim 1, is characterized in that, described photoelectric conversion unit is photodiode.
4. optical trigger according to claim 1, is characterized in that, described isolator is capacitance.
5. optical trigger according to claim 1, is characterized in that, described output terminal is wire.
6. optical trigger according to claim 1, is characterized in that, described light pulse is greater than or equal to 100Lux in illumination, and the duration triggers described power supply unit while being greater than or equal to 1ms and powers on.
7. a light signal receiving control apparatus, the control module that comprises light signal receiving element, be connected with described light signal receiving element, the power supply unit being connected with described control module, it is characterized in that, also comprise and be connected to the optical trigger powering on for triggering the described power supply unit of light signal receiving control apparatus between described control module and described power supply unit, described optical trigger, comprising:
Photoelectric conversion unit, for being converted to electric impulse signal by light pulse;
Isolator, for producing potential difference (PD) by electric impulse signal, discharges electric signal;
Output terminal, powers on for trigger described light signal receiving control apparatus power supply unit according to described electric signal;
Signal amplification circuit, connect described isolator and described output terminal, comprise the first triode and the second triode being connected with described the first triode, wherein, described photoelectric conversion unit is connected with one end of described isolator, the other end of described isolator is connected with the base stage of described the first triode, the emitter of described the first triode is connected with the base stage of described the second triode, the equal ground connection of emitter of the emitter of described the first triode and described the second triode, the collector of described the second triode is connected with described output terminal.
8. light signal receiving control apparatus according to claim 7, is characterized in that, described isolator is connected between described photoelectric conversion unit and described output terminal.
9. light signal receiving control apparatus according to claim 7, is characterized in that, described photoelectric conversion unit is photodiode.
10. light signal receiving control apparatus according to claim 7, is characterized in that, described isolator is capacitance.
11. light signal receiving control apparatus according to claim 7, is characterized in that, described output terminal is wire.
12. light signal receiving control apparatus according to claim 7, is characterized in that, described light pulse is equal to, or greater than 100Lux in illumination, and the duration triggers described power supply unit while being equal to, or greater than 1ms and powers on.
13. light signal receiving control apparatus according to claim 7, is characterized in that, described power supply unit comprises feed circuit and battery.
14. light signal receiving control apparatus according to claim 13, is characterized in that, described battery comprises ickel-cadmium cell or Ni-MH battery or lithium ion battery.
15. light signal receiving control apparatus according to claim 7, is characterized in that, described photoelectric conversion unit is photodiode.
16. light signal receiving control apparatus according to claim 7, is characterized in that, described light signal receiving element is photodiode.
17. light signal receiving control apparatus according to claim 7, is characterized in that, also comprise for by the demodulating unit of visible light signal demodulation.
18. light signal receiving control apparatus according to claim 17, is characterized in that, described demodulating unit is demodulator circuit.
19. according to the light signal receiving control apparatus described in claim 7 to 18 any one, it is characterized in that, described light signal receiving control apparatus is light smart lock, electric lock, commercial unit, locker or office equipment.
20. 1 kinds of light signal receiving control apparatus coding/decoding methods, for the light signal receiving control apparatus described in claim 7-19 any one, is characterized in that, comprise the following steps:
M1. the start-up portion using signal rising edge as high level, the control module of light signal receiving control apparatus starts timing after rising edge being detected, and when described high level lasting time is greater than the first default duration, described control module records high level number;
M2. using signal negative edge as low level start-up portion, the control module of light signal receiving control apparatus starts timing while negative edge being detected, when described low duration is greater than the second default duration, described control module is one group of signal ended of record automatically;
M3. the control module of light signal receiving control apparatus calculates the cycle of every group of signal by synchronous clock, according to the cycle identification low level signal of described every group of signal.
21. light signal receiving control apparatus coding/decoding methods according to claim 20, it is characterized in that, when there is high level signal after one group of signal ended in the first Preset Time section, described light signal receiving control apparatus is revised clock according to the time of described high level signal and is automatically recorded described high level signal to next group signal.
22. light signal receiving control apparatus coding/decoding methods according to claim 20, it is characterized in that, when there is not high level signal after one group of signal ended in the second Preset Time section, described light signal receiving control apparatus determines that the signal receiving is the low level signal of next group signal.
23. light signal receiving control apparatus coding/decoding methods according to claim 20, is characterized in that, described coding/decoding method is applicable to the stroboscopic visible light signal decoding that optical signal launcher or mobile phone send.
24. light signal receiving control apparatus coding/decoding methods according to claim 20, it is characterized in that, the high and low level number of every group of signal that the visible light signal coded system sending according to optical signal launcher defines described light signal receiving control apparatus record represents implication.
25. light signal receiving control apparatus coding/decoding methods according to claim 20, it is characterized in that, when the described low level signal duration is greater than the 3rd default duration, signal receives or signal receive interruption, and the control module of described light signal receiving control apparatus restarts detection signal.
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| CN201210468070.0A CN103021051B (en) | 2012-11-19 | 2012-11-19 | Photovoltaic triggering circuit, optical signal receive control equipment and decoding method thereof |
| KR1020157006496A KR101738792B1 (en) | 2012-08-13 | 2013-08-13 | Optical signal processing apparatus and decoding method for optical signal reception control device |
| PCT/CN2013/081414 WO2014026601A1 (en) | 2012-08-13 | 2013-08-13 | Optical signal processing apparatus and decoding method for optical signal reception control device |
| US14/621,402 US9755747B2 (en) | 2012-08-13 | 2015-02-13 | Optical signal processing apparatus and decoding method for optical signal reception control device |
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| CN201210468070.0A CN103021051B (en) | 2012-11-19 | 2012-11-19 | Photovoltaic triggering circuit, optical signal receive control equipment and decoding method thereof |
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| WO2014026601A1 (en) | 2012-08-13 | 2014-02-20 | 深圳光启创新技术有限公司 | Optical signal processing apparatus and decoding method for optical signal reception control device |
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Effective date of registration: 20150911 Address after: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Patentee after: Shenzhen Guang Qi intelligent photonic Technology Co., Ltd. Address before: 518034 A international business center, No. 1061, Xiang Mei Road, Guangdong, Shenzhen, Futian District, China 18B Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |