CN104833416B - The Students ' Learning illuminance of a kind of head of a family supervision tests wireless alarmer - Google Patents
The Students ' Learning illuminance of a kind of head of a family supervision tests wireless alarmer Download PDFInfo
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- CN104833416B CN104833416B CN201510260029.8A CN201510260029A CN104833416B CN 104833416 B CN104833416 B CN 104833416B CN 201510260029 A CN201510260029 A CN 201510260029A CN 104833416 B CN104833416 B CN 104833416B
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Abstract
The present invention discloses the Students ' Learning illuminance of a kind of head of a family supervision and tests wireless alarmer, is made up of illuminance detector and illuminance alarm；Illuminance detector is detected power circuit, illuminance testing circuit, illuminance detection microcontroller circuit, illuminance detection radio transmitter composition by illuminance；Illuminance alarm is reported to the police power circuit by illuminance, and illuminance alarming wireless receives circuit, illuminance warning microcontroller circuit, and illuminance alarm voice produces circuit, and illuminance alert audio power amplifier forms；If illuminance is less than 300 luxs during Students ' Learning, illuminance detector is by wireless transmission warning message to illuminance alarm, and illuminance alarm sends " present light is too dark, woulds you please remind child to turn on light; prevent myopia " voice message, and the warning head of a family supervises Students ' Learning illuminance.
Description
Technical field
The present invention relates to the electronic technology field of the Students ' Learning illuminance test wireless alarmer of a kind of head of a family supervision.
Background technology
Illumination deficiency is myopia of student main cause, standard for lighting design of buildings GB_50034-2004 specifies, the illumination of general office cannot be less than 300 luxs, could meet the Vision Health needs to substantial light photograph, if illumination is less than 300 luxs, the needs of Students ' Learning cannot be met.
But student is in during study, often have ignored the illuminance of academic environment, or cannot judge whether current light degree meets the requirement of Vision Health, cause intensity of illumination during Students ' Learning inadequate, deteriorated vision, therefore being badly in need of a kind of the head of a family to be facilitated to supervise, Students ' Learning illuminance tests alarm device.
Summary of the invention
The technical problem to be solved in the present invention is to provide the Students ' Learning illuminance of a kind of head of a family supervision and tests wireless alarmer, including illuminance detector and two parts of illuminance alarm；Placing illuminance detector on the desk of Students ' Learning, the head of a family wears illuminance alarm；When the illuminance in Students ' Learning place is less than 300 luxs; illuminance detector will send the illuminance alarm that radio alarming information is worn to the head of a family; illuminance alarm will send the voice message of " present light is the darkest; would you please remind child to turn on light; prevent myopia "; the warning head of a family to improve illuminance during Students ' Learning at once, notes protecting vision.
The technical scheme is that the Students ' Learning illuminance that a kind of head of a family supervises tests wireless alarmer, be made up of illuminance detector and illuminance alarm；Illuminance detector is detected power circuit, illuminance testing circuit, illuminance detection microcontroller circuit, illuminance detection radio transmitter composition by illuminance；Illuminance alarm is reported to the police power circuit by illuminance, and illuminance alarming wireless receives circuit, illuminance warning microcontroller circuit, and illuminance alarm voice produces circuit, and illuminance alert audio power amplifier forms；When Students ' Learning, if illuminance testing circuit detects that illuminance is not less than 300 luxs, device does not carry out any prompting；If illuminance testing circuit detects that illuminance is less than 300 luxs; illuminance detection microcontroller circuit detects radio transmitter by illuminance; send wireless alarm signal and receive circuit to illuminance alarming wireless; being reported to the police microcontroller circuit by illuminance, trigger illuminance alarm voice and produce circuit, send the voice message of " present light is the darkest; would you please remind child to turn on light; prevent myopia ", the warning head of a family to improve illuminance during Students ' Learning at once, notes protection vision.
Described illuminance detection power circuit is made up of the first set of cells and the first switch；First battery anode connects the first switch, and the first switch other end exports the first DC power anode；The negative pole of the first set of cells is the negative pole of the first DC source；First DC source provides working power to illuminance testing circuit, illuminance detection microcontroller circuit, illuminance detection radio transmitter.
Described illuminance testing circuit is made up of photoconductive resistance and the first resistance；Photoconductive resistance, the first resistant series, be connected between the first DC power anode and negative pole；The other end of photoconductive resistance simultaneously connects input 9 foot of the first microcontroller.
Described illuminance detection microcontroller circuit is made up of the first microcontroller, the first crystal oscillator, the first electric capacity, the second electric capacity；4 feet of the first microcontroller and 5 feet are connected by the first crystal oscillator, and 4 feet of the first microcontroller connect the negative pole of the first DC source by the first electric capacity, and 5 feet of the first microcontroller connect the negative pole of the first DC source by the second electric capacity.
Described illuminance detection radio transmitter is made up of wireless transmit chip, the second crystal oscillator, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the 3rd inductance, the 4th inductance, first antenna；First microcontroller uses SPI mode to be connected with wireless transmit chip, 1st foot data input pin of wireless transmit chip, the 2nd foot clock input pin, the 3rd foot chip select input foot, the 14th foot data output pin, connect the 19 of the first microcontroller respectively, 18,17,15 feet, the first microcontroller uses simulation SPI mode to communicate；16th foot wireless-modulated data input pin of wireless transmit chip, connects 16 feet of the first microcontroller；3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the 3rd inductance, the 4th inductance composition first antenna impedance matching network, first antenna impedance matching network input connects wireless transmit chip wireless power and amplifies N output pin 12 foot and wireless power amplification P output pin 13 foot, first antenna impedance matching network outfan connects first antenna, it is achieved first antenna and the impedance matching of wireless transmit chip radio frequency outfan；The wireless power of wireless transmit chip amplifies N output pin 12 foot, by the first inductance, second inductance connection the first DC power anode；The wireless power of wireless transmit chip amplifies N output pin 12 foot, connects first antenna by the 3rd electric capacity；The wireless power of wireless transmit chip amplifies P output pin 13 foot, connects the first DC power cathode by the 5th electric capacity；The wireless power of wireless transmit chip amplifies P output pin 13 foot, by the 4th inductance connection first antenna；The wireless power of wireless transmit chip amplifies P output pin 13 foot, connects the first DC power cathode by the 3rd inductance, the 4th electric capacity；First inductance, the second inductance, the 3rd inductance, the 4th electric capacity link together.9 feet of wireless transmit chip and the second crystal oscillator connect, and the second crystal oscillator provides wireless transmit chip local oscillation signal.
Told illuminance warning power circuit is made up of the second set of cells and second switch；Second battery anode connects second switch, and the second switch other end exports the second DC power anode；The negative pole of the second set of cells is the negative pole of the second DC source；Second DC source provides working power to receive circuit, illuminance warning microcontroller circuit, illuminance alarm voice generation circuit, illuminance alert audio power amplifier to illuminance alarming wireless.
Described illuminance warning microcontroller circuit is made up of the second microcontroller, the 4th crystal oscillator, the 8th electric capacity, the 9th electric capacity；Connecting the 4th crystal oscillator between 4 feet and 5 feet of the second microcontroller, 4 feet of the second microcontroller connect the negative pole of the second DC source by the 8th electric capacity, and 5 feet of the second microcontroller connect the negative pole of the second DC source by the 9th electric capacity.
Told illuminance alarming wireless receives circuit and is made up of wireless receiving chip, the 3rd crystal oscillator, the 6th electric capacity, the 7th electric capacity, the 5th inductance, the second antenna；Second microcontroller uses SPI mode to be connected with wireless receiving chip, 1st foot data input pin of wireless receiving chip, the 2nd foot clock input pin, the 3rd foot chip select input foot, the 14th foot data output pin, connect the 19 of the second microcontroller respectively, 18,17,16 feet, the second microcontroller uses simulation SPI mode to communicate；5th foot interrupt output foot of wireless receiving chip, connects 7 foot external interrupt feet of the second microcontroller；6th electric capacity, the 7th electric capacity, the second Antenna Impedance Matching network of the 5th inductance composition wireless receiving chip, second Antenna Impedance Matching network input connects the second antenna, second Antenna Impedance Matching network output connect wireless receiving chip be wirelessly input to foot 13 foot and 12 feet, it is achieved the second antenna and the impedance matching of wireless receiving chip wireless input；Wireless receiving chip be wirelessly input between foot 13 foot and 12 feet connect the 5th inductance, 13 feet of wireless receiving chip connect the second antenna by the 6th electric capacity, and 12 feet of wireless receiving chip connect the second DC power cathode by the 7th electric capacity；9 feet of wireless receiving chip connect the 3rd crystal oscillator, and the 3rd crystal oscillator provides the local oscillation signal of wireless receiving chip.
Told illuminance alarm voice produces circuit and is made up of speech chip, the 3rd resistance, the 4th resistance, the tenth electric capacity；Speech chip recorded " present light is too dark, woulds you please remind child to turn on light, prevents myopia " voice signal, and the voice output of speech chip controls foot 7 foot and connects output pin 11 foot of the second microcontroller, by the output pin 11 foot control voice broadcast of the second microcontroller；Voice output foot 7 foot of speech chip connects the tenth electric capacity, exports voice signal, and the tenth electric capacity is AC coupled effect；Meanwhile, speech chip voice output foot 7 foot is connected to the second DC power cathode by the 4th resistance, is direct current biasing resistance；RC oscillator input pin 8 foot of speech chip, connects the second DC power anode by the 3rd resistance, and the 3rd resistance forms RC oscillating circuit with speech chip internal circuit.
Told illuminance alert audio power amplifier is made up of audio frequency power amplifier chip, the 5th resistance, the 6th resistance, the 7th resistance, the 11st electric capacity, the 12nd electric capacity, the 13rd electric capacity, the 14th electric capacity, potentiometer, speaker；By the 5th resistance, potentiometer, the 6th resistant series, 3 feet of potentiometer connect audio frequency input pin 7 foot of audio frequency power amplifier chip, can regulate the size of input audio frequency in set point；5th resistance connects the tenth electric capacity, is illuminance alert audio power amplifier audio input end；11st electric capacity connects audio frequency input pin 7 foot of audio frequency power amplifier chip, plays input filter effect；Power amplifier output pin 1 foot of audio frequency power amplifier chip, connects speaker by coupling electric capacity the 13rd electric capacity；14th electric capacity and the 7th resistant series, connect power amplifier output pin 1 foot of audio frequency power amplifier chip, be high-frequency impulse absorbing circuit, it is to avoid high-frequency self-excitation.
The invention has the beneficial effects as follows, student detects illuminance with illuminance detector, and the head of a family monitors with illuminance alarm；When Students ' Learning, if illuminance testing circuit detects that illuminance is less than 300 luxs, illuminance detection microcontroller circuit detects radio transmitter by illuminance, transmit wireless signals to illuminance alarming wireless and receive circuit, reported to the police microcontroller circuit by illuminance, trigger illuminance alarm voice and produce circuit, by illuminance alert audio power amplifier and illuminance alarm speaker, send to the head of a family that " present light is the darkest, would you please remind child to turn on light, prevent myopia " voice message, warning the head of a family it is noted that supervision Students ' Learning time illuminance, note protecting vision.
Accompanying drawing explanation
Fig. 1 is the system structure block diagram of the Students ' Learning illuminance test wireless alarmer of a kind of head of a family supervision.
Fig. 2 is that illuminance detects power circuit, illuminance testing circuit, illuminance detection microcontroller circuit, and the schematic diagram of illuminance detection radio transmitter.
Fig. 3 is illuminance warning power circuit, and illuminance alarming wireless receives circuit, the schematic diagram of illuminance warning microcontroller circuit.
Fig. 4 is that illuminance alarm voice produces circuit, the schematic diagram of illuminance alert audio power amplifier.
Detailed description of the invention
In conjunction with accompanying drawing and example, the present invention is further described as follows.
As it is shown in figure 1, the Students ' Learning illuminance of a kind of head of a family supervision tests wireless alarmer, it is made up of illuminance detector and illuminance alarm；Illuminance detector is detected power circuit 100, illuminance testing circuit 200, illuminance detection microcontroller circuit 300 by illuminance, and illuminance detection radio transmitter 400 forms；Illuminance alarm is by illuminance warning power circuit 500, and illuminance alarming wireless receives circuit 600, illuminance warning microcontroller circuit 700, and illuminance alarm voice produces circuit 800, and illuminance alert audio power amplifier 900 forms；When Students ' Learning, if illuminance testing circuit 200 detects that illuminance is not less than 300 luxs, device does not carry out any prompting；If illuminance testing circuit 200 detects that illuminance is less than 300 luxs; illuminance detection microcontroller circuit 300 detects radio transmitter 400 by illuminance; send wireless alarm signal and receive circuit 600 to illuminance alarming wireless; by illuminance warning microcontroller circuit 700; trigger illuminance alarm voice and produce circuit 800; send the voice message of " present light is the darkest; would you please remind child to turn on light; prevent myopia "; the warning head of a family to improve illuminance during Students ' Learning at once, notes protecting vision.
As in figure 2 it is shown, illuminance detection power circuit 100 is made up of the first set of cells 101 and the first switch 102；First set of cells 101 positive pole connects the first switch 102, and first switch 102 other ends export the first DC power anode；The negative pole of the first set of cells 101 is the negative pole of the first DC source；First DC source provides working power to illuminance testing circuit 200, illuminance detection microcontroller circuit 300, illuminance detection radio transmitter 400.
Illuminance testing circuit 200 is made up of photoconductive resistance 201 and the first resistance 202；Photoconductive resistance the 201, first resistance 202 is connected, and is connected between the first DC power anode and negative pole；The other end of photoconductive resistance simultaneously 201 connects 9 feet of the first microcontroller 301, photoconductive resistance 201 detects Students ' Learning intensity of illumination, the voltage signal of exporting change gives input 9 foot of the first microcontroller 301, and the first microcontroller 301 is AD converted, it is possible to calculate current light intensity.
Illuminance detection microcontroller circuit 300 is made up of first microcontroller the 301, first crystal oscillator the 303, first electric capacity the 302, second electric capacity 304；4 feet of the first microcontroller 301 and 5 feet are connected by the first crystal oscillator 303,4 feet of the first microcontroller 301 connect the negative pole of the first DC source by the first electric capacity 302, and 5 feet of the first microcontroller 301 connect the negative pole of the first DC source by the second electric capacity 304.
Illuminance detection radio transmitter 400 is made up of wireless transmit chip the 401, second crystal oscillator the 402, the 3rd electric capacity the 403, the 4th electric capacity the 408, the 5th electric capacity the 410, first inductance the 405, second inductance the 406, the 3rd inductance the 407, the 4th inductance 409, first antenna 404；First microcontroller 301 uses SPI mode to be connected with wireless transmit chip 401,1st foot data input pin of wireless transmit chip 401, the 2nd foot clock input pin, the 3rd foot chip select input foot, the 14th foot data output pin, connecting 19,18,17,15 feet of the first microcontroller 301 respectively, the first microcontroller 301 uses simulation SPI mode to communicate；16th foot wireless-modulated data input pin of wireless transmit chip 401, connects 16 feet of the first microcontroller 301；3rd electric capacity the 403, the 4th electric capacity the 408, the 5th electric capacity the 410, first inductance the 405, second inductance the 406, the 3rd inductance the 407, the 4th inductance 409 forms first antenna 404 impedance matching network, first antenna 404 impedance matching network input connects the wireless power of wireless transmit chip 401 and amplifies N output pin 12 foot and wireless power amplification P output pin 13 foot, first antenna 404 impedance matching network outfan connects first antenna 404, it is achieved first antenna 404 and the impedance matching of wireless transmit chip 401 RF output end；The wireless power of wireless transmit chip 401 amplifies N output pin 12 foot, connects the first DC power anode by first inductance the 405, second inductance 406；The wireless power of wireless transmit chip 401 amplifies N output pin 12 foot, connects first antenna 404 by the 3rd electric capacity 403；The wireless power of wireless transmit chip 401 amplifies P output pin 13 foot, connects the first DC power cathode by the 5th electric capacity 410；The wireless power of wireless transmit chip 401 amplifies P output pin 13 foot, connects first antenna 404 by the 4th inductance 409；The wireless power of wireless transmit chip 401 amplifies P output pin 13 foot, connects the first DC power cathode by the 3rd inductance the 407, the 4th electric capacity 408；First inductance the 405, second inductance the 406, the 3rd inductance the 407, the 4th electric capacity 408 links together.9 feet and second crystal oscillator 402 of wireless transmit chip 401 connect, and the second crystal oscillator 402 provides wireless transmit chip 401 local oscillation signal；When the first microcontroller 301 detects that intensity of illumination is less than 300 lux, the first microcontroller 301, by first antenna 404 impedance matching network and first antenna 404, sends wireless alarm signal and receives circuit 600 to illuminance alarming wireless.
As it is shown on figure 3, illuminance warning power circuit 500 is made up of the second set of cells 501 and second switch 502；Second set of cells 501 positive pole connects second switch 502, and second switch 502 other end exports the second DC power anode；The negative pole of the second set of cells 501 is the negative pole of the second DC source；Second DC source provides working power to receive circuit 600, illuminance warning microcontroller circuit 700, illuminance alarm voice generation circuit 800, illuminance alert audio power amplifier 900 to illuminance alarming wireless.
Illuminance warning microcontroller circuit 700 is made up of the second microcontroller the 701, the 4th crystal oscillator the 703, the 8th electric capacity the 702, the 9th electric capacity 704；The 4th crystal oscillator 703 is connected between 4 feet and 5 feet of the second microcontroller 701,4 feet of the second microcontroller 701 connect the negative pole of the second DC source by the 8th electric capacity 702, and 5 feet of the second microcontroller 701 connect the negative pole of the second DC source by the 9th electric capacity 704.
Illuminance alarming wireless receives circuit 600 and is made up of wireless receiving chip the 601, the 3rd crystal oscillator the 602, the 6th electric capacity the 604, the 7th electric capacity the 606, the 5th inductance the 605, second antenna 603；Second microcontroller 701 uses SPI mode to be connected with wireless receiving chip 601,1st foot data input pin of wireless receiving chip 601, the 2nd foot clock input pin, the 3rd foot chip select input foot, the 14th foot data output pin, connecting 19,18,17,16 feet of the second microcontroller 701 respectively, the second microcontroller 701 uses simulation SPI mode to communicate；5th foot interrupt output foot of wireless receiving chip 601, connects 7 foot external interrupt feet of the second microcontroller 701；6th electric capacity the 604, the 7th electric capacity the 606, the 5th inductance 605 forms the second antenna 603 impedance matching network of wireless receiving chip 601, second antenna 603 impedance matching network input connects the second antenna 603, second antenna 603 impedance matching network outfan connect wireless receiving chip 601 be wirelessly input to foot 13 foot and 12 feet, it is achieved the second antenna 603 and the impedance matching of wireless receiving chip 601 wireless input；Wireless receiving chip 601 be wirelessly input between foot 13 foot and 12 feet connect the 5th inductance 605,13 feet of wireless receiving chip 601 connect the second antenna 603 by the 6th electric capacity 604, and 12 feet of wireless receiving chip 601 connect the second DC power cathode by the 7th electric capacity 606；9 feet of wireless receiving chip 601 connect the 3rd crystal oscillator 602, and the 3rd crystal oscillator 602 provides the local oscillation signal of wireless receiving chip 601；When wireless alarm signal is by the second antenna 603 and the second antenna 603 impedance matching network, it is input to wireless receiving chip 601, after wireless receiving chip 601 is decoded, is sent to the second microcontroller 701 by SPI, after data analysis, carries out audio alert.
As shown in Figure 4, illuminance alarm voice generation circuit 800 is made up of speech chip the 801, the 3rd resistance the 802, the 4th resistance the 803, the tenth electric capacity 804；Speech chip 801 recorded " present light is too dark, woulds you please remind child to turn on light, prevents myopia " voice signal, and the voice output of speech chip 801 controls foot 7 foot and connects 11 feet of the second microcontroller 701, by 11 foot control voice broadcasts of the second microcontroller 701；Voice output foot 7 foot of speech chip 801 connects the tenth electric capacity 804, exports voice signal, and the tenth electric capacity 804 is AC coupled effect；Meanwhile, speech chip 8017 foot is connected to the second DC power cathode by the 4th resistance 803, is direct current biasing resistance；RC oscillator input pin 8 foot of speech chip 801, connects the second DC power anode by the 3rd resistance 802, and the 3rd resistance 802 forms RC oscillating circuit with speech chip 801 internal circuit.
Illuminance alert audio power amplifier 900 is made up of audio frequency power amplifier chip the 901, the 5th resistance the 902, the 6th resistance the 904, the 7th resistance the 909, the 11st electric capacity the 905, the 12nd electric capacity the 906, the 13rd electric capacity the 907, the 14th electric capacity 908, potentiometer 903, speaker 910；Being connected by the 5th resistance 902, potentiometer the 903, the 6th resistance 904,3 feet of potentiometer 903 connect audio frequency input pin 7 foot of audio frequency power amplifier chip 901, can regulate the size of input audio frequency in set point；5th resistance 902 connects the tenth electric capacity 804, is illuminance alert audio power amplifier 900 audio input end；11st electric capacity 905 connects audio frequency input pin 7 foot of audio frequency power amplifier chip 901, plays input filter effect；Power amplifier output pin 1 foot of audio frequency power amplifier chip 901, connects speaker 910 by coupling electric capacity the 13rd electric capacity 907；14th electric capacity 908 is connected with the 7th resistance 909, connects power amplifier output pin 1 foot of audio frequency power amplifier chip 901, is high-frequency impulse absorbing circuit, it is to avoid high-frequency self-excitation.
The Students ' Learning illuminance of a kind of head of a family supervision tests wireless alarmer, when illuminance is higher than 300 lux, the photoconductive resistance 201 of illuminance detector is low resistance state, and the first microcontroller 301 detects that illuminance is higher than 300 luxs, and device does not carry out alarm.
When illuminance is less than 300 luxs, the photoconductive resistance 201 of illuminance detector is high value state, first microcontroller 301 detects that illuminance is less than 300 luxs, and the first microcontroller 301, by wireless transmit chip 401, sends the wireless messages reported to the police to illuminance alarm.
The wireless receiving chip 601 of illuminance alarm receives, by the second antenna 603, the alarming wireless information that illuminance detector sends, wireless receiving chip 601 exports alert data signal to the second microcontroller 701, second microcontroller 701 triggers speech chip 801 and sends the voice signal of " present light is the darkest; would you please remind child to turn on light; prevent myopia ", voice signal, after audio frequency power amplifier chip 901 carries out power amplification, sends voice message by speaker 910.
Should be understood that; for the present invention through absolutely proving; can also have the embodiment of multiple conversion and modification; it is not limited to the instantiation of above-mentioned embodiment; examples detailed above is as just the explanation of the present invention; rather than limit, in a word, protection scope of the present invention includes which obviously converts to those skilled in the art or substitutes and remodeling.
Claims (1)
1. the Students ' Learning illuminance of head of a family's supervision tests wireless alarmer, power circuit is detected including illuminance, illuminance testing circuit, illuminance detection microcontroller circuit, illuminance detection radio transmitter, illuminance warning power circuit, illuminance alarming wireless receives circuit, illuminance warning microcontroller circuit, illuminance alarm voice produces circuit, illuminance alert audio power amplifier, it is characterised in that described illuminance testing circuit is made up of photoconductive resistance and the first resistance；Photoconductive resistance, the first resistant series connect, and the other end of photoconductive resistance connects the input of the first microcontroller；Described illuminance detection radio transmitter is made up of wireless transmit chip, the second crystal oscillator, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the 3rd inductance, the 4th inductance, first antenna；First microcontroller uses SPI mode to be connected with wireless transmit chip, and the first microcontroller uses simulation SPI mode to communicate；3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the 3rd inductance, the 4th inductance composition first antenna impedance matching network, first antenna impedance matching network input connects wireless transmit chip wireless power and amplifies N output pin and wireless power amplification P output pin, first antenna impedance matching network outfan connects first antenna, it is achieved first antenna and the impedance matching of wireless transmit chip radio frequency outfan；Told illuminance alarming wireless receives circuit and is made up of wireless receiving chip, the 3rd crystal oscillator, the 6th electric capacity, the 7th electric capacity, the 5th inductance, the second antenna；Second microcontroller uses SPI mode to be connected with wireless receiving chip, and the second microcontroller uses simulation SPI mode to communicate；The interrupt output foot of wireless receiving chip, connects the external interrupt foot of the second microcontroller；6th electric capacity, the 7th electric capacity, the second Antenna Impedance Matching network of the 5th inductance composition wireless receiving chip, second Antenna Impedance Matching network input connects the second antenna, second Antenna Impedance Matching network output connect wireless receiving chip be wirelessly input to foot, it is achieved the second antenna and the impedance matching of wireless receiving chip wireless input；Told illuminance alarm voice produces circuit and is made up of speech chip, the 3rd resistance, the 4th resistance, the tenth electric capacity；The voice output of speech chip controls foot and connects the output pin of the second microcontroller, by the second microprocessor controls voice broadcast；Voice output foot 7 foot of speech chip connects the tenth electric capacity, exports voice signal；Speech chip voice output foot is connected to the second DC power cathode by the 4th resistance；The RC oscillator input pin of speech chip, connects the second DC power anode by the 3rd resistance, and the 3rd resistance forms RC oscillating circuit with speech chip internal circuit；Told illuminance alert audio power amplifier is made up of audio frequency power amplifier chip, the 5th resistance, the 6th resistance, the 7th resistance, the 11st electric capacity, the 12nd electric capacity, the 13rd electric capacity, the 14th electric capacity, potentiometer, speaker；5th resistance, potentiometer, the 6th resistant series, 3 feet of potentiometer connect the audio frequency input pin of audio frequency power amplifier chip, can regulate the size of input audio frequency in set point；5th resistance connects the tenth electric capacity, is illuminance alert audio power amplifier audio input end；The power amplifier output pin of audio frequency power amplifier chip, connects speaker by coupling electric capacity the 13rd electric capacity；14th electric capacity and the 7th resistant series, connect the power amplifier output pin of audio frequency power amplifier chip, be high-frequency impulse absorbing circuit, it is to avoid high-frequency self-excitation.
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