CN102663897B - Motorcycle early-warning circuit - Google Patents
Motorcycle early-warning circuit Download PDFInfo
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- CN102663897B CN102663897B CN2012101435389A CN201210143538A CN102663897B CN 102663897 B CN102663897 B CN 102663897B CN 2012101435389 A CN2012101435389 A CN 2012101435389A CN 201210143538 A CN201210143538 A CN 201210143538A CN 102663897 B CN102663897 B CN 102663897B
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Abstract
The invention relates to a motorcycle early-warning circuit, which mainly comprises a signal detector, a band-pass filter, an analog-to-digital (A/D) converter, a data processor, a driving amplifier and an executor. The signal detector is connected with the band-pass filter through analog signals. The band-pass filter is connected with the analog input end of the A/D converter through analog signals. The digital output end of the A/D converter is connected with the data line of the data processor through digital signals. The data processor is connected with a built-in memory thereof in an internal control way through digital and control signal. The control line of the data processor is connected with the control signal input end of the driving amplifier through signals through a coupling circuit. The power output end of the driving amplifier is connected with the input end of the executor through analog signals. A system synchronously compares the acquired sound shaking signals with the stored motorcycle sound approaching process signals, inverses and amplifies difference signals, and finally drives sound, light and mechanical devices to give out sound, flashing light and vibration alarms in a certain form of output signals.
Description
Technical field
The present invention relates to a kind of early warning circuit, specifically the attention motorcycle such as a kind of pedestrian of prompting rushes near alarming device Circuits System.
Background technology
Pedestrian on road,, as disadvantaged group, often meet with the motorcycle that goes at express speed and come and collide, harass, and then cause injures and deaths.The public service ads in the many cities of erect image is described: " 70 percent traffic hazard is relevant with motorcycle ".Although various control measures such as " taboo is rubbed ", " limit is rubbed " have been taked in some city, yet due to too large recoverable amount radix, the huge difficulty that rides colony's inertia, initiatively law enforcement, electronic police nonintervention motorcycle etc. reason, the pushing way by shoving or bumping of motorcycle, reverse driving, to ignore the phenomenon such as red light still of common occurrence, and the motorcycle accident is hurted sb.'s feelings, driving is grabbed phenomenon and still occurred repeatedly.This just forces the measures such as people have to take passively to dodge, avoidance, in the hope of safety.But in most walking along the street situations, only depend on people's self sensory function to judge motorcycle and position thereof, speed, travel direction etc., often arrange not as good as preventing, being caught unprepared.The sensation deficit colony such as blind, deaf particularly, this crisis is particularly outstanding.If a kind of device of carrying is arranged, loyal, detect motorcycle by noise far away and near reliably, perception also judges its position, speed, travel direction etc., again at once with designed form warning carrier, carry the pedestrian of this device so that the measures such as the companion just can in time take to dodge, avoidance of going together, to guarantee walking along the street safety.Given this, we develop a kind of motorcycle early warning circuit, threaten the blank of caution to fill up motorcycle.
Summary of the invention
For reminding the attention motorcycles such as pedestrian to rush near threat, in time take to dodge, the measure such as avoidance,, with assurance walking along the street safety, the invention provides a kind of motorcycle early warning circuit.It mainly consists of signal detector, bandpass filter, A/D converter, data processor, driving amplifier and actuator.Signal detector is that simulating signal is connected with bandpass filter, and bandpass filter is that simulating signal is connected with the analog input end of A/D converter; The digital output end of A/D converter is that digital signal is connected with the data processor data line, data processor is connected with the internal control of its internal memory for numeral, control signal, the control line of data processor is connected for the signal by coupled circuit with the control signal input end of driving amplifier, and the power take-off of driving amplifier is that simulating signal is connected with the input end of actuator.The sound dither signal that system will collect is carried out synchronization relatively with a motorcycle noise of depositing near process signal, its difference signal is anti-phase and amplify again, finally with certain output signal type driving sound, light, machine spare sound, flash of light, vibration alarming.
The technical solution adopted for the present invention to solve the technical problems is:
Motorcycle early warning circuit system mainly consists of signal detector, bandpass filter, A/D converter, data processor, driving amplifier and actuator.Signal detector is that simulating signal is connected with bandpass filter, and bandpass filter is that simulating signal is connected with the analog input end of A/D converter; The digital output end of A/D converter is that digital signal is connected with the data processor data line, the data processor internal memory also forms with it digital signal and is connected internal control with control signal and connects, the control line of data processor is connected for the signal by coupled circuit with the control signal input end of driving amplifier, and the power take-off of driving amplifier is that simulating signal is connected with the input end of actuator.
The signal detector of Detection of Weak Signals link utilizes high sensitivity microphone collected sound signal on a large scale, by pre-amplification circuit, amplifies and intensity (amplitude) screening, obtains the voice signal of shaking in 10～60Hz scope; The bandpass filter utilization of voiced band pass filter link has, passive bandwidth-limited circuit, obtains the 100～1000Hz sound signal with jitter feature; The A/D converter of A/D conversion links will carry out analog-to-digital conversion process with the voice signal of jitter feature, obtain shaking the voice signal sequence data; Simultaneously match calculates link and utilizes data processor with shake sample sound model data in the motorcycle 10～60Hz scope in internal memory, the shake voice signal sequence data that obtains with collection, filtering carries out the capable coupling of synchronization well, comparison, calculating, control, gating, obtains the recognition result data temporary; Direction speed is differentiated Doppler's model of link maintenance data processor, and temporary recognition result data are calculated, and judgement sound source motion state, direction of motion, movement velocity, filter oppositely and the sound dither signal data of microinching; If differentiating link, direction speed obtained the dither signal data of motion simultaneously and rapidly, synchronously relatively calculate the dither signal data that link is moved this more simultaneously and rapidly, synchronize and compare, calculate with the motorcycle 100～1000Hz noise tone color signal data of depositing in storer through data processor, obtain synchronization discrepancy value signal data, if these synchronization discrepancy value signal data are less than set-point, export given gating pulse, open to drive the driving amplifier of warning link, produce and amplify warning driving signal to definite form; Drive the warning link when obtaining open command (gating pulse), with output signals such as the given form audio of driving amplifier output, flicker, buffetings, give actuator, be the performers such as hummer, LED, Vib., make its to the carrier sound, glisten, the alerting signal of the form such as vibration.
The function of data processor and internal memory thereof is mainly by being realized by 89S53 type singlechip chip and peripheral circuit institute composition data treatment circuit thereof.The pin 8,7,6,5,4,3 of singlechip chip, 2 is connected with being connected with the pin 11,12,13,14,15,16,17 of A/D converter chip respectively with being connected, the pin 31 of singlechip chip is connected with working power positive terminal E, and the pin 39 of singlechip chip is connected with an end of output repeating resistance; The other end of output repeating resistance is as the gating pulse output terminal.The pin 19 and 18 of singlechip chip jumps to the two ends of quartz crystal, and respectively with an end of the first decoupling capacitor be connected an end of decoupling capacitor and be connected; The equal ground connection of the other end of the other end of the first decoupling capacitor and the second decoupling capacitor.The two ends of little tactile switch jump to positive terminal and the negative pole end of the buffer capacitor that resets, wherein with the tie point of the buffer capacitor positive terminal that resets, with working power positive terminal E, be connected, be connected with an end of the buffer resistance that resets with the tie point of the buffer capacitor negative pole end that resets, and be connected to the pin 9 of singlechip chip; The other end ground connection of buffer resistance resets.
The invention has the beneficial effects as follows: Circuits System can be assembled into the pocket device of carrying; Can be loyal, detect motorcycle by noise far away and near reliably, perception also judges its position, speed, travel direction etc., in time with designed form warning device carrier and colleague companion take to dodge, the measures such as avoidance, to guarantee walking along the street safety.Especially for sensation deficit and the lower limb obstacle colony such as blind, deaf, but sort circuit device powerful guarantee safety.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the motorcycle early warning circuit system chart of the embodiment of the present invention.
Fig. 2 is the workflow diagram of this motorcycle early warning circuit system.
Fig. 3 is input and the bandwidth-limited circuit structural drawing of the embodiment of the present invention.
Fig. 4 is A/D conversion and the data processing circuit structural drawing of the embodiment of the present invention.
Fig. 5 is drive amplification and the executive circuit structural drawing of the embodiment of the present invention.
In Fig. 1: SM is signal detector, and BF is bandpass filter, and AD is A/D converter, and DP is data processor, and M is storer, and DR is driving amplifier, and AR is actuator.
In Fig. 3,4: R
iFor biasing resistance, M
icFor Electret condenser microphone, C
iFor coupling capacitance, R
fFor feedback resistance, M
osFor field effect transistor, R
cFor pull-up resistor, R
s1Be the first low pass resistance, R
s2Be the second low pass resistance, R
s3Be the 3rd low pass resistance, R
s4Be the 4th low pass resistance, C
s1Be the first high pass electric capacity, C
s2Be the second high pass electric capacity, C
s3For the third high energising is held, C
s4Be the 4th high pass electric capacity, E is the working power terminals, and s is audio signal output terminal.
In Fig. 4,5: U1 is singlechip chip, and U2 is the A/D converter chip; R1 is the input repeating resistance, and R2 is the first divider resistance, and R3 is the second divider resistance, and R4 is buffer resistance, and R5 is for resetting buffer resistance, and R6 is the output repeating resistance; C1 is buffer capacitor, and C2 is the first decoupling capacitor, and C3 is the second decoupling capacitor, and C4 is the buffer capacitor that resets; Y is quartz crystal; S1 is little tactile switch; Cp is the gating pulse output terminal.
In Fig. 5: S
CRFor controllable silicon, B
uzFor hummer, U3 is alarm sound chip, V
ibFor Vib., V
DFor the LED device, T is transistor, and K is toggle switch, C
elFor battery.
Embodiment
In embodiment work system block diagram shown in Figure 1: motorcycle early warning circuit system mainly consists of signal detector SM, bandpass filter BF, A/D converter AD, data processor DP, driving amplifier DR and actuator AR.Signal detector SM is that simulating signal is connected with bandpass filter BF, and bandpass filter BF is that simulating signal is connected with the analog input end of A/D converter AD; The digital output end of A/D converter AD is that digital signal is connected with data processor DP data line, data processor DP internal memory M also forms with it digital signal and is connected internal control with control signal and connects, the control line of data processor DP is connected for the signal by coupled circuit with the control signal input end of driving amplifier DR, and the power take-off of driving amplifier DR is that simulating signal is connected with the input end of actuator AR.
In embodiment work system block diagram shown in Figure 1 and working-flow figure shown in Figure 2: the signal detector SM of Detection of Weak Signals link utilizes high sensitivity microphone collected sound signal on a large scale, amplify and intensity (amplitude) screening by pre-amplification circuit, obtain the voice signal of shaking in 10～60Hz scope; The bandpass filter BF of voiced band pass filter link utilizes to be had, passive bandwidth-limited circuit, obtains the 100～1000Hz sound signal with jitter feature; The A/D converter AD of A/D conversion links will carry out analog-to-digital conversion process with the voice signal of jitter feature, obtain shaking the voice signal sequence data; Simultaneously match calculates link and utilizes data processor DP with shake sample sound model data in the motorcycle 10～60Hz scope in its internal memory M, the shake voice signal sequence data that obtains with collection, filtering carries out the capable coupling of synchronization well, comparison, calculating, control, gating, obtains the recognition result data temporary; Direction speed is differentiated Doppler's model of link maintenance data processor DP, and temporary recognition result data are calculated, and judgement sound source motion state, direction of motion, movement velocity, filter oppositely and the sound dither signal data of microinching; If differentiating link, direction speed obtained the dither signal data of motion simultaneously and rapidly, synchronously relatively calculate the dither signal data that link is moved this more simultaneously and rapidly, synchronize and compare, calculate with the motorcycle 100～1000Hz noise tone color signal data of depositing in storer M through data processor DP, obtain synchronization discrepancy value signal data, if these synchronization discrepancy value signal data are less than set-point, export given gating pulse, open to drive the driving amplifier DR of warning link, produce and amplify warning driving signal to definite form; Drive the warning link when obtaining open command (gating pulse), with output signals such as the given form audio of driving amplifier DR output, flicker, buffetings, give actuator AR, be the performers such as hummer, LED, Vib., make its to the carrier sound, glisten, the alerting signal of the form such as vibration.
In embodiment work system block diagram shown in Figure 1 and input and bandwidth-limited circuit structure principle chart shown in Figure 3:
Biasing resistance R
i, coupling capacitance C
i, Electret condenser microphone M
ic, feedback resistance R
f, field effect transistor M
osWith pull-up resistor R
cForm signal detector SM.Biasing resistance R
iAn end be connected with working power positive terminal E, the other end and Electret condenser microphone M
icDrain terminal connect; Coupling capacitance C
iPositive terminal and Electret condenser microphone M
icDrain terminal connect, negative pole end with field effect transistor M
osGrid connect; Electret condenser microphone M
icSource terminal and the equal ground connection of gauze screen terminals.Feedback resistance R
fAn end and field effect transistor M
osGrid connect, the other end and pull-up resistor R
cAn end and field effect transistor M
osDrain electrode connect simultaneously; Pull-up resistor R
cThe other end be connected with working power positive terminal E; Field effect transistor M
osSource ground.
The first low pass resistance R
s1, the second low pass resistance R
s2, the 3rd low pass resistance R
s3, the 4th low pass resistance R
s4, the first high pass capacitor C
s1, the second high pass capacitor C
s2, third high energising holds C
s3With the 4th high pass capacitor C
s4Form Audio Band Pass Filter BF.The first low pass resistance R wherein
s1, the second low pass resistance R
s2, the first high pass capacitor C
s1With the second high pass capacitor C
s2Form the high pass unit, the 3rd low pass resistance R
s3, the 4th low pass resistance R
s4, third high energising holds C
s3With the 4th high pass capacitor C
s4Form the low pass unit.The first low pass resistance R
s1An end and field effect transistor M
osDrain electrode connect, the first low pass resistance R
s1The other end and the second low pass resistance R
s2An end connect; The first low pass resistance R
s1With the second low pass resistance R
s2Tie point and the first high pass capacitor C
s1An end connect, the first high pass capacitor C
s1Other end ground connection; The second low pass resistance R
s2The other end and the second high pass capacitor C
s2An end connect, the second high pass capacitor C
s2Other end ground connection.The second low pass resistance R
s2With the second high pass capacitor C
s2Tie point and third high energising hold C
s3An end connect, C is held in the third high energising
s3The other end and the 4th high pass capacitor C
s4An end connect; C is held in the third high energising
s3With the 4th high pass capacitor C
s4Tie point and the 3rd low pass resistance R
s3An end connect, the 3rd low pass resistance R
s3Other end ground connection; The 4th high pass capacitor C
s4The other end and the 4th low pass resistance R
s4An end connect, the 4th low pass resistance R
s4Other end ground connection.The 4th high pass capacitor C
s4With the 4th low pass resistance R
s4Tie point as audio signal output terminal s.
In embodiment work system block diagram shown in Figure 1 and A/D shown in Figure 4 conversion and data processing circuit structural drawing:
89S53 type singlechip chip U1 and peripheral circuit composition data treatment circuit thereof, realize the function of data processor DP and internal memory M.The pin 8,7,6,5,4,3 of singlechip chip U1,2 is connected with being connected with the pin 11,12,13,14,15,16,17 of A/D converter chip U2 respectively with being connected, the pin 31 of singlechip chip U1 is connected with working power positive terminal E, and the pin 39 of singlechip chip U1 is connected with the end of output repeating resistance R6; The other end of output repeating resistance R6 is as gating pulse output terminal cp.The pin 19 and 18 of singlechip chip U1 jumps to the two ends of quartz crystal Y, and respectively with the end of the first decoupling capacitor C2 be connected the end of decoupling capacitor C3 and be connected; The equal ground connection of the other end of the other end of the first decoupling capacitor C2 and the second decoupling capacitor C3.The two ends of little tactile switch S 1 jump to positive terminal and the negative pole end of the buffer capacitor C4 that resets, wherein with the tie point of the buffer capacitor C4 positive terminal that resets, with working power positive terminal E, be connected, be connected with the end of the buffer resistance R5 that resets with the tie point of the buffer capacitor C4 negative pole end that resets, and be connected to the pin 9 of singlechip chip U1; The other end ground connection of buffer resistance R5 resets.
ADC0804 type A/D converter chip U2 and peripheral circuit thereof form A/D converter.The end of input repeating resistance R1 is connected with audio signal output terminal s, and the other end of input repeating resistance R1 is connected with the pin 6 of A/D converter chip U2; The end of the first divider resistance R2 is connected with working power positive terminal E, and the end of the first divider resistance R2 is connected with the end of the second divider resistance R3, the other end ground connection of the second divider resistance R3; The first divider resistance R2 is connected with the pin 9 of A/D converter chip U2 with the tie point of the second divider resistance R3; The end of buffer resistance R4 is connected with the end of buffer capacitor C1, and the other end of buffer resistance R4 is connected with the pin 19 of A/D converter chip U2; The other end ground connection of buffer capacitor C1; Buffer resistance R4 is connected with the pin 4 of A/D converter chip U2 with the tie point of buffer capacitor C1.The pin 11,12,13,14,15,16 of A/D converter chip U2,17 is connected with being connected with the pin 8,7,6,5,4,3,2 of singlechip chip U1 respectively with being connected; The pin 20 of A/D converter chip U2 is connected with working power positive terminal E, the pin 7 of A/D converter chip U2,8 and 10 equal ground connection, and all the other pins of A/D converter chip U2 are unsettled.
In embodiment work system block diagram shown in Figure 1 and drive amplification and executive circuit structural drawing shown in Figure 5: controllable silicon S
CR, HY-100 type alarm sound chip U3, transistor T form driving amplifier DR; HTD27A-1 type hummer B
uz, platypelloid type mobile phone Vib. V
ib, LED device V
D, miniature slide switch K, lithium ion battery of mobile phone C
elForm actuator AR.Controllable silicon S
CRAnode be connected with working power positive terminal E, its negative electrode is connected with the pin 2 of alarm sound chip U3, its gate pole is connected with gating pulse output terminal cp; Hummer B
uzTwo terminals be connected across between the pin 3,4 of alarm sound chip U3; U3 is alarm sound chip, Vib. V
ibTwo ends be connected across between the pin 5 of working power positive terminal E and alarm sound chip U3; LED device V
DAnode be connected with working power positive terminal E, its negative electrode is connected with the collector of transistor T; The base stage of transistor T is connected with the pin 3 of alarm sound chip U3, its grounded emitter; The side terminal of toggle switch K and conversion terminals are connected with working power positive terminal E simultaneously, its opposite side terminals and battery C
elPositive pole connect; C
elNegative pole and with the pin 6 of alarm sound chip U3 ground connection simultaneously.
Claims (5)
1. motorcycle early warning circuit, Circuits System mainly consists of signal detector, bandpass filter, A/D converter, data processor, driving amplifier and actuator; Signal detector is that simulating signal is connected with bandpass filter, and bandpass filter is that simulating signal is connected with the analog input end of A/D converter; The digital output end of A/D converter is that digital signal is connected with the data processor data line; It is characterized in that:
The data processor internal memory also forms with it digital signal and is connected internal control with control signal and connects, the control line of data processor is connected for the signal by coupled circuit with the control signal input end of driving amplifier, and the power take-off of driving amplifier is that simulating signal is connected with the input end of actuator;
The function of data processor and internal memory thereof is mainly by being realized by 89S53 type singlechip chip and peripheral circuit institute composition data treatment circuit thereof; The pin 8,7,6,5,4,3 of singlechip chip, 2 is connected with being connected with the pin 11,12,13,14,15,16,17 of A/D converter chip respectively with being connected, the pin 31 of singlechip chip is connected with working power positive terminal E, and the pin 39 of singlechip chip is connected with an end of output repeating resistance; The other end of output repeating resistance is as the gating pulse output terminal; The pin 19 and 18 of singlechip chip jumps to the two ends of quartz crystal, and respectively with an end of the first decoupling capacitor be connected an end of decoupling capacitor and be connected; The equal ground connection of the other end of the other end of the first decoupling capacitor and the second decoupling capacitor; The two ends of little tactile switch jump to positive terminal and the negative pole end of the buffer capacitor that resets, wherein with the tie point of the buffer capacitor positive terminal that resets, with working power positive terminal E, be connected, be connected with an end of the buffer resistance that resets with the tie point of the buffer capacitor negative pole end that resets, and be connected to the pin 9 of singlechip chip; The other end ground connection of buffer resistance resets.
2. motorcycle early warning circuit according to claim 1, it is characterized in that: signal detector SM is by biasing resistance R
i, coupling capacitance C
i, Electret condenser microphone M
ic, feedback resistance R
f, field effect transistor M
osWith pull-up resistor R
cForm;
Biasing resistance R
iAn end be connected with working power positive terminal E, the other end and Electret condenser microphone M
icDrain terminal connect; Coupling capacitance C
iPositive terminal and Electret condenser microphone M
icDrain terminal connect, negative pole end and field effect transistor M
osGrid connect; Electret condenser microphone M
icSource terminal and the equal ground connection of gauze screen terminals; Feedback resistance R
fAn end and field effect transistor M
osGrid connect, the other end and pull-up resistor R
cAn end and field effect transistor M
osDrain electrode connect simultaneously; Pull-up resistor R
cThe other end be connected with working power positive terminal E; Field effect transistor M
osSource ground.
3. motorcycle early warning circuit according to claim 1, it is characterized in that: bandpass filter BF is by the first low pass resistance R
s1, the second low pass resistance R
s2, the 3rd low pass resistance R
s3, the 4th low pass resistance R
s4, the first high pass capacitor C
s1, the second high pass capacitor C
s2, third high energising holds C
s3With the 4th high pass capacitor C
s4Form; The first low pass resistance R wherein
s1, the second low pass resistance R
s2, the first high pass capacitor C
s1With the second high pass capacitor C
s2Form the high pass unit, the 3rd low pass resistance R
s3, the 4th low pass resistance R
s4, third high energising holds C
s3With the 4th high pass capacitor C
s4Form the low pass unit;
The first low pass resistance R
s1An end and field effect transistor M
osDrain electrode connect, the first low pass resistance R
s1The other end and the second low pass resistance R
s2An end connect; The first low pass resistance R
s1With the second low pass resistance R
s2Tie point and the first high pass capacitor C
s1An end connect, the first high pass capacitor C
s1Other end ground connection; The second low pass resistance R
s2The other end and the second high pass capacitor C
s2An end connect, the second high pass capacitor C
s2Other end ground connection; The second low pass resistance R
s2With the second high pass capacitor C
s2Tie point and third high energising hold C
s3An end connect, C is held in the third high energising
s3The other end and the 4th high pass capacitor C
s4An end connect; C is held in the third high energising
s3With the 4th high pass capacitor C
s4Tie point and the 3rd low pass resistance R
s3An end connect, the 3rd low pass resistance R
s3Other end ground connection; The 4th high pass capacitor C
s4The other end and the 4th low pass resistance R
s4An end connect, the 4th low pass resistance R
s4Other end ground connection; The 4th high pass capacitor C
s4With the 4th low pass resistance R
s4Tie point as audio signal output terminal s.
4. motorcycle early warning circuit according to claim 1, it is characterized in that: A/D converter consists of ADC0804 type A/D converter chip U2 and peripheral circuit thereof;
The end of input repeating resistance R1 is connected with audio signal output terminal s, and the other end of input repeating resistance R1 is connected with the pin 6 of A/D converter chip U2; The end of the first divider resistance R2 is connected with working power positive terminal E, and the other end of the first divider resistance R2 is connected with the end of the second divider resistance R3, the other end ground connection of the second divider resistance R3; The first divider resistance R2 is connected with the pin 9 of A/D converter chip U2 with the tie point of the second divider resistance R3; The end of buffer resistance R4 is connected with the end of buffer capacitor C1, and the other end of buffer resistance R4 is connected with the pin 19 of A/D converter chip U2; The other end ground connection of buffer capacitor C1; Buffer resistance R4 is connected with the pin 4 of A/D converter chip U2 with the tie point of buffer capacitor C1; The pin 11,12,13,14,15,16 of A/D converter chip U2,17 is connected with being connected with the pin 8,7,6,5,4,3,2 of singlechip chip U1 respectively with being connected; The pin 20 of A/D converter chip U2 is connected with working power positive terminal E, the pin 7 of A/D converter chip U2,8 and 10 equal ground connection, and all the other pins of A/D converter chip U2 are unsettled.
5. motorcycle early warning circuit according to claim 1, it is characterized in that: driving amplifier DR is by controllable silicon S
CR, HY-100 type alarm sound chip U3 and transistor T form; Actuator AR is by HTD27A-1 type hummer B
uz, platypelloid type mobile phone Vib. V
ib, LED device V
D, miniature slide switch K and lithium ion battery of mobile phone C
elForm;
Controllable silicon S
CRAnode be connected with working power positive terminal E, its negative electrode is connected with the pin 2 of alarm sound chip U3, its gate pole is connected with gating pulse output terminal cp; Two terminals of hummer Buz are connected across between the pin 3,4 of alarm sound chip U3; U3 is alarm sound chip, Vib. V
ibTwo ends be connected across between the pin 5 of working power positive terminal E and alarm sound chip U3; LED device V
DAnode be connected with working power positive terminal E, its negative electrode is connected with the collector of transistor T; The base stage of transistor T is connected with the pin 3 of alarm sound chip U3, its grounded emitter; The side terminal of toggle switch K and conversion terminals are connected with working power positive terminal E simultaneously, its opposite side terminals and battery C
elPositive pole connect; C
elNegative pole and with the pin 6 of alarm sound chip U3 ground connection simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101435389A CN102663897B (en) | 2012-05-10 | 2012-05-10 | Motorcycle early-warning circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101435389A CN102663897B (en) | 2012-05-10 | 2012-05-10 | Motorcycle early-warning circuit |
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| CN102663897B true CN102663897B (en) | 2013-11-13 |
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| CN104734215A (en) * | 2013-12-19 | 2015-06-24 | 张昊轩 | Production workshop safety alarm system automatically charged by solar energy |
| CN110716179A (en) * | 2019-09-29 | 2020-01-21 | 浙江海洋大学 | Bird positioning system and method based on sound |
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| JP2002008189A (en) * | 2000-06-22 | 2002-01-11 | Matsushita Electric Ind Co Ltd | Vehicle detector and vehicle detection method |
| JP4024285B1 (en) * | 2007-01-11 | 2007-12-19 | 有 小山 | Alarm display system |
| DE102007034029A1 (en) * | 2007-07-20 | 2009-01-22 | Robert Bosch Gmbh | A method of informing an observer of an on-duty emergency vehicle and arrangement therefor |
| JP4310371B2 (en) * | 2007-09-11 | 2009-08-05 | パナソニック株式会社 | Sound determination device, sound detection device, and sound determination method |
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