CN205679763U - Detecting distance alarm device - Google Patents
Detecting distance alarm device Download PDFInfo
- Publication number
- CN205679763U CN205679763U CN201620282771.9U CN201620282771U CN205679763U CN 205679763 U CN205679763 U CN 205679763U CN 201620282771 U CN201620282771 U CN 201620282771U CN 205679763 U CN205679763 U CN 205679763U
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- mcu
- resistance
- ground wire
- power supply
- electric capacity
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Abstract
A kind of detecting distance alarm device, belongs to electronic device field.The purpose of this utility model be to provide a kind of can be according to the detecting distance alarm device of sound size disturbance in judgement thing far and near distance.This utility model is to be made up of signal processing circuit, signal receiving processing circuit, MCU minimum system, buzzer control circuit and power supply processing module.This utility model simple in construction, easy to use, control buzzer sound size and sound effect according to the distance of vehicle front distance barrier.
Description
Technical field
This utility model belongs to electronic device field.
Background technology
Along with the development of society, buzzer warning function or the emphasis of automotive field, but sound control still compares
Single it is not changed in.Obstacle distance is only the most all a kind of auditory tone cues, is that driver cannot determine barrier
Far and near.
Summary of the invention
The purpose of this utility model be to provide a kind of can according to the detection of sound size disturbance in judgement thing far and near distance away from
From alarm device.
This utility model is by signal processing circuit, signal receiving processing circuit, MCU minimum system, buzzer control
Circuit processed and power supply processing module are constituted；
Signal processing circuit: MCU_Output1 connects the MCU_1PIN base through resistance R1, R2 connecting triode Q1
Pole, the grounded emitter of Q1, the colelctor electrode of Q1 is received on inductance L1, and the other end of inductance is received on power supply VCC and by electricity
Hold C1 ground connection；
Signal receiving processing circuit: Send Out signal passes back through receiving transducer reception through barrier and is transferred to chip
CX20106A 1PIN, 2PIN connect resistance R3 and connect electric capacity C3 to ground wire, 4PIN ground connection through electric capacity C2 to ground wire, 3PIN
Line, 5PIN is connected on power supply VCC through resistance R4, and 6PIN is connected to ground wire through electric capacity C4, and 7PIN passes through MCU_Intput1
Being connected to MCU_2PIN carry out signal processing and calculate obstacle distance and on power supply VCC on resistance R5,8PIN is even
Receive on power supply VCC and be connected to ground wire by filter capacitor C5；
MCU minimum system: MCU_3PIN connects MCU_Output2 output frequency signal and controls audion Q2, MCU_4PIN
Connection MCU_Output3 output switch amount signal control audion Q3 shutoff controls audion Q4 switch thus controls buzzer
Power supply BATTERY, MCU_9PIN connect the RESET of power supply chip TLE4275 for chip reset, MCU_18PIN connects crystalline substance
Shake one end of Y1 receive ground wire by electric capacity C15, and MCU_19PIN is connected the other end of crystal oscillator Y1 and received by electric capacity C16
Ground wire, MCU_20PIN is connected to ground wire, MCU_31PIN and MCU_40PIN is connected on power supply VCC；
Buzzer control circuit: MCU_Output2 connect single-chip microcomputer MCU_3PIN output frequency signal through resistance R6,
R7 is connected to the base stage of audion Q2 and receives ground wire by electric capacity C6, and the emitter stage of Q2 connects ground wire, and Q2 colelctor electrode is connected to
The negative terminal of buzzer, diode D1 is the most in parallel with FMQ, and FMQ positive pole is connected to audion Q4 colelctor electrode by resistance R8, Q4's
Emitter stage is connected on power supply BATTREY, and the base stage of Q4 is connected on the colelctor electrode of audion Q3 through resistance R10 and passes through resistance
R9 is connected on power supply BATTERY, the grounded emitter line of audion Q3, and base stage is connected by resistance R11 to MCU_Output3
The MCU_4PIN of single-chip microcomputer also receives ground wire by resistance R12 or C8；
Power supply processing module: igniting, accumulator are connected to chip TLE4275_1PIN by diode D2, D3 and are led to respectively
Crossing electric capacity C9 and C10 and receive ground wire, TLE4275_2PIN is connected to MCU_9PIN reset terminal through resistance R14, and through resistance
R13 is upper on power supply VCC, and TLE4275_3PIN is connected to ground wire, and TLE4275_4PIN is connected to ground wire through electric capacity C11,
TLE4275_5PIN output VCC is also connected to ground wire through electric capacity C12 and C13.
This utility model simple in construction, easy to use, control buzzer according to the distance of vehicle front distance barrier
Sound size and sound effect.
Accompanying drawing explanation
Fig. 1 is this utility model overall circuit schematic diagram；
Fig. 2 is this utility model signal processing circuit figure；
Fig. 3 is this utility model signal receiving processing circuit figure；
Fig. 4 is this utility model MCU minimum system circuit diagram；
Fig. 5 is this utility model buzzer control circuit figure；
Fig. 6 is this utility model power supply processing module circuit diagram.
Detailed description of the invention
This utility model is by signal processing circuit, signal receiving processing circuit, MCU minimum system, buzzer control
Circuit processed and power supply processing module are constituted；
Signal processing circuit: connect as in figure 2 it is shown, MCU_Output1 connects MCU_1PIN(P1.0/T2) through electricity
The base stage of resistance R1, R2 connecting triode Q1, the grounded emitter of Q1, the colelctor electrode of Q1 is received on inductance L1, the other end of inductance
Receive on power supply VCC and by electric capacity C1 ground connection.
Signal receiving processing circuit: connect as it is shown on figure 3, Send Out signal passes back through receiving transducer through barrier
Reception is transferred to chip CX20106A 1PIN, 2PIN connection resistance R3 and arrives through electric capacity C2 to ground wire, 3PIN connection electric capacity C3
Ground wire, 4PIN earth lead, 5PIN is connected on power supply VCC through resistance R4, and 6PIN is connected to ground wire through electric capacity C4, and 7PIN leads to
Cross MCU_Intput1 to be connected to MCU_2PIN (P1.1/T2 EX) and carry out signal processing and calculate obstacle distance and through resistance
R5 is upper on power supply VCC, and 8PIN is connected to be connected to ground wire on power supply VCC and by filter capacitor C5.
MCU minimum system: connect as shown in Figure 4, MCU_1PIN(P1.0/T2) connect MCU_Output1 output frequency be
The square wave of 40HZ, MCU_2PIN (P1.1/T2 EX) receives signal after being processed by CX20106A and carries out computed range, MCU_3PIN
(P1.2) MCU_Output2 output frequency signal control audion Q2, MCU_4PIN (P1.3) connection MCU_Output3 is connected defeated
Go out on-off model control audion Q3 turn off control audion Q4 switch thus control the power supply BATTERY of buzzer,
MCU_9PIN (RST) connects the RESET of power supply chip TLE4275 and is used for chip reset, and MCU_18PIN (XTAL2) connects crystal oscillator
Ground wire is also received by electric capacity C15 in one end of Y1, and MCU_19PIN (XTAL1) connects the other end of crystal oscillator Y1 and passes through electric capacity C16
Receiving ground wire, MCU_20PIN (GED) is connected to ground wire, MCU_31PIN (EA/VPP) and MCU_40PIN (VCC) and is connected to power supply
On VCC.
Buzzer control circuit: connect as it is shown in figure 5, the MCU_3PIN (P1.2) of MCU_Output2 connection single-chip microcomputer is defeated
Going out frequency signal be connected to the base stage of audion Q2 through resistance R6, R7 and receive ground wire by electric capacity C6, the emitter stage of Q2 is even
Earth lead, Q2 colelctor electrode is connected to the negative terminal of buzzer, and diode D1 is the most in parallel with FMQ, and FMQ positive pole is connected by resistance R8
To audion Q4 colelctor electrode, the emitter stage of Q4 is connected on power supply BATTREY, and the base stage of Q4 is connected to audion through resistance R10
Being connected on power supply BATTERY on the colelctor electrode of Q3 and by resistance R9, the grounded emitter line of audion Q3, base stage is by electricity
(P1.3 also receives ground wire by resistance R12 or C8 to the MCU_4PIN of resistance R11 to MCU_Output3 connection single-chip microcomputer.
Power supply processing module: connect as shown in Figure 6, igniting, accumulator are respectively by diode D2, and D3 is connected to chip
TLE4275_1PIN also receives ground wire by electric capacity C9 and C10, and it is multiple that TLE4275_2PIN is connected to MCU_9PIN through resistance R14
Position end, and on power supply VCC on resistance R13, TLE4275_3PIN is connected to ground wire, and TLE4275_4PIN is through electric capacity
C11 is connected to ground wire, and TLE4275_5PIN output VCC is also connected to ground wire through electric capacity C12 and C13.
Shown in Fig. 1, detecting distance is reported to the police by signal amplification module such as Fig. 2, signal receiving processing module such as Fig. 3, list
Sheet machine MCU module such as Fig. 4, buzzer voice control module such as Fig. 5, power supply output module such as Fig. 6
Fig. 2 is carried out dividing potential drop Current limited Control audion Q1 by the square wave of MCU_P1.0 pin output 40HZ through resistance R1, R2
Thus control inductance L1 charging and be amplified voltage signal activating probe transmission ultrasound wave, C1 is to be filtered power supply VCC.
Fig. 3 is filtered by the chip CX20106A docking collection of letters number, is transferred to MCU after Shape correction, and 1 foot is ultrasound wave letter
Number input, resistance R3 negative feedback resistor, change its resistance and can change gain and the frequency characteristic of preamplifier, electric capacity C2
Value can change frequency characteristic；Electric capacity C3 is detection electric capacity, and its capacitance size affects the susceptiveness of detection output pulse；Resistance R4
It is used for arranging the mid frequency of band filter；The capacitance of electric capacity C4 can change the distance of detection range；7 feet are signal output
End is used for transmitting signal to MCU_P1.1, and this foot is open collector output, so resistance R5 plays effect；Electric capacity C5 is
Power filtering capacitor.
Fig. 4 be MCU(can be freescale series, 51 series etc.), below as a example by AT89S52 single-chip microcomputer, P1 mouth is
Having 8 two-way I/O mouths of resistance on inside, P1 output buffer can drive 4 TTL logic levels.To P1 port one writing
Time, on inside, resistance port is drawn high, and now can use as input port.When using as input, by drawing that outside drags down
Foot, due to internal resistance, will export electric current.
Fig. 5 receives according to time difference t sending signal with receive signal after signal as MCU_P1.1, according to light in atmosphere
Spread speed v, s=vt/2 calculates the distance of car and barrier, by MCU_P1.2, MCU_P1.3, buzzer is carried out sound
Sound control system.
Electric capacity C6 is the filter capacitor of signal, and resistance R6, R7 are that current limliting divider resistance controls audion Q2；Electric capacity C8 is letter
Number filter capacitor, resistance R11, R12 be current limliting divider resistance control audion Q3；D1 is fly-wheel diode, and protection is because of buzzing
Device two ends produce peak voltage and damage audion Q2,；Electric capacity C7 is filter capacitor, filters the buzzer electric current shadow to other parts
Ring and the AC impedance of change power supply makes voltage constant not suddenly change；Resistance R8 plays metering function, controls electric capacity C7 discharge time
Length；Q4 is the input controlling power supply BATTERY, and resistance R9 is to provide base current, and resistance R10 plays metering function.
Buzzer operation principle: resistance R6 end input frequency signal, resistance R11 end input switch signal, work as switching signal
The when of shutoff, frequency signal also in output, is powered generation lingering sound to buzzer by electric capacity C7, by frequency signal and switch
The output cooperation of signal controls the music that buzzer output is interesting to listen to.
Fig. 6 is power supply module, and IGN is automotive ignition, and BATTERY is automobile storage battery, D2, D3 for prevent igniting and
Accumulator interferes, and is filtered process by electric capacity C9, C10 and sends chip TLE4275 to and carry out VCC power supply output, electricity
On resistance R13, VCC is that TLE4275 is in high level duty all the time, and resistance R14 carries out chip TLE4275 for software and enters
Horizontal reset processes, and electric capacity C12, C13 carry out process to output voltage makes output voltage stabilization export.
Claims (1)
1. a detecting distance alarm device, it is characterised in that: be by signal processing circuit, signal receiving processing circuit,
MCU minimum system, buzzer control circuit and power supply processing module are constituted；
Signal processing circuit: MCU_Output1 connects the MCU_1PIN base stage through resistance R1, R2 connecting triode Q1,
The grounded emitter of Q1, the colelctor electrode of Q1 is received on inductance L1, and the other end of inductance is received on power supply VCC and by electric capacity C1
Ground connection；
Signal receiving processing circuit: Send Out signal passes back through receiving transducer reception through barrier and is transferred to chip
CX20106A 1PIN, 2PIN connect resistance R3 and connect electric capacity C3 to ground wire, 4PIN ground connection through electric capacity C2 to ground wire, 3PIN
Line, 5PIN is connected on power supply VCC through resistance R4, and 6PIN is connected to ground wire through electric capacity C4, and 7PIN passes through MCU_Intput1
Being connected to MCU_2PIN carry out signal processing and calculate obstacle distance and be pulled upward on power supply VCC through resistance R5,8PIN is even
Receive on power supply VCC and be connected to ground wire by filter capacitor C5；
MCU minimum system: MCU_3PIN connects MCU_Output2 output frequency signal and controls audion Q2, MCU_4PIN connection
The control audion Q3 shutoff of MCU_Output3 output switch amount signal controls audion Q4 switch thus controls the electricity of buzzer
Source BATTERY, MCU_9PIN connect the RESET of power supply chip TLE4275 and are used for chip reset, and MCU_18PIN connects crystal oscillator Y1
One end and receive ground wire by electric capacity C15, MCU_19PIN connects the other end of crystal oscillator Y1 and receives ground wire by electric capacity C16,
MCU_20PIN is connected to ground wire, MCU_31PIN and MCU_40PIN is connected on power supply VCC；
Buzzer control circuit: MCU_Output2 connects the MCU_3PIN output frequency signal of single-chip microcomputer through resistance R6, R7 even
Receiving the base stage of audion Q2 and receive ground wire by electric capacity C6, the emitter stage of Q2 connects ground wire, and Q2 colelctor electrode is connected to buzzing
The negative terminal of device, diode D1 is the most in parallel with FMQ, and FMQ positive pole is connected to audion Q4 colelctor electrode, the transmitting of Q4 by resistance R8
Pole is connected on power supply BATTREY, and the base stage of Q4 is connected on the colelctor electrode of audion Q3 through resistance R10 and is connected by resistance R9
Receiving on power supply BATTERY, the grounded emitter line of audion Q3, base stage connects monolithic by resistance R11 to MCU_Output3
The MCU_4PIN of machine also receives ground wire by resistance R12 or C8；
Power supply processing module: igniting, accumulator are connected to chip TLE4275_1PIN and by electricity by diode D2, D3 respectively
Holding C9 and C10 and receive ground wire, TLE4275_2PIN is connected to MCU_9PIN reset terminal through resistance R14, and on resistance R13
Moving on power supply VCC, TLE4275_3PIN is connected to ground wire, and TLE4275_4PIN is connected to ground wire through electric capacity C11,
TLE4275_5PIN output VCC is also connected to ground wire through electric capacity C12 and C13；
Wherein MCU uses freescale series or 51 series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282771.9U CN205679763U (en) | 2016-04-07 | 2016-04-07 | Detecting distance alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282771.9U CN205679763U (en) | 2016-04-07 | 2016-04-07 | Detecting distance alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205679763U true CN205679763U (en) | 2016-11-09 |
Family
ID=57439118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620282771.9U Expired - Fee Related CN205679763U (en) | 2016-04-07 | 2016-04-07 | Detecting distance alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205679763U (en) |
-
2016
- 2016-04-07 CN CN201620282771.9U patent/CN205679763U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20180407 |