CN201638312U

CN201638312U - Adjustable intelligent sound pressure warner device

Info

Publication number: CN201638312U
Application number: CN2010201097035U
Authority: CN
Inventors: 陈小东; 程久生; 李红元
Original assignee: BESTAR ELECTRONICS INDUSTRY Co Ltd
Current assignee: BESTAR ELECTRONICS INDUSTRY Co Ltd
Priority date: 2010-02-01
Filing date: 2010-02-01
Publication date: 2010-11-17
Anticipated expiration: 2020-02-01

Abstract

The utility model belongs to the field of warning devices, particularly to an adjustable intelligent sound pressure warner device during the truck reversing process, which comprises a horn, a signal generation module, a power amplifying circuit, an even level signal induction amplifying circuit and an even level signal feedback amplifying circuit, wherein the signal generation module is controlled by a singlechip, the power amplifying circuit is connected with one signal output terminal of the singlechip, the even level signal induction amplifying circuit and the capacitor bank in the power amplifying circuit are connected in a coupling manner, the even level signal induction amplifying circuit is connected with a signal receiving terminal of the singlechip, the other signal output terminal of the singlechip is connected with the even level signal feedback amplifying circuit, and the power amplifying circuit and the even level signal feedback amplifying circuit are connected with the horn. The utility model has the following benefits: the warner can adjust the level of the sent warning sound according to the level of the outside noise, thereby realizing the complete intelligence, avoiding the accidents caused during the automobile reversing process, and having no noise contamination to the environment.

Description

The adjustable intelligent acoustic pressure warner device

Technical field

The utility model belongs to the warning device field, especially for the adjustable intelligent acoustic pressure warner device of truck reversing.

Background technology

Alarm is applied to every field now, and fire alarm, cipher alarm, burglar alarm, backup buzzer or the like are arranged, and wherein backup buzzer is applied on the various vehicles.The backup buzzer that uses is generally physical construction at present, the sound height that sends is the same at any time, this alarm can't be regulated the size of alarm sound automatically with the size of brouhaha, in the time of noisy, people on every side understands the warning of imperceptible alarm, thus untimely dodging, cause the generation of accident, in the time of quietly, the sound of alarm still is constant, causes quiet environment is on every side caused sound pollution.

Summary of the invention

The purpose of this utility model provides a kind of digital integrated circuit and sensing device is realized the alarm that acoustic pressure transforms, this alarm can be regulated the size of sending alarm sound automatically along with the change of outside noise, in noisy environment, can send the alarm sound bigger than noisy sound, prevent the generation of accident, quietly sending less alarm sound in the environment, can not cause sound pollution to environment.

Realize that the utility model purpose technical scheme is as follows:

The adjustable intelligent acoustic pressure warner device, this alarm comprises loudspeaker, this alarm also has signal generating module, power amplification circuit, even level induction of signal amplifying circuit, even level signal feedback amplifying circuit, signal generating module is by Single-chip Controlling, power amplification circuit connects a signal output part of single-chip microcomputer, capacitance group in even level induction of signal amplifying circuit and the power amplification circuit is of coupled connections, even level induction of signal amplifying circuit is connected with a signal receiving end of single-chip microcomputer, another signal output part of single-chip microcomputer is connected power amplification circuit with even level signal feedback amplifying circuit, even level signal feedback amplifying circuit is connected with loudspeaker.

Have first filter capacitor and first electric capacity in the described capacitance group, power amplification circuit is connected with first electric capacity by first filter capacitor.

Described signal generating module is powered by feed circuit, is provided with input control circuit between feed circuit and the signal generating module.

Described even level signal feedback amplifying circuit is connected with single-chip microcomputer by feedback resistance, second electric capacity in the signal generating module.

Described even level induction of signal amplifying circuit is a two-stage signal induction amplifying circuit, has two amplifiers in this circuit.

The big circuit of described even level signal feedback is a two-stage signal induction amplifying circuit, has two amplifiers in this circuit.

The signal of described signal generating module output is a square wave signal.

Described feed circuit have voltage stabilizer and peripheral electric capacity.

Have the diode and second filter capacitor in the described input control circuit.

Adopt such scheme, induction threshold values and processing that signal generating module generation signal, received signal, setting need, power amplification circuit is with the signal amplification that gains, capacitance group is carried out filtering and induction, even level induction of signal amplifying circuit can be responded to power amplification circuit output earth signal by capacitance group and carries out processing and amplifying and pass to signal generating module, and the big circuit of even level signal feedback can carry out passing to loudspeaker after the processing and amplifying to the signal of signal generating module feedback.

Export small-signal by program setting one output terminal on the single-chip microcomputer in the signal generating module, single-chip microcomputer output small-signal square wave, this small-signal square wave is amplified to the signal of the intensity of setting by power amplification circuit, power amplification circuit and even level induction of signal amplifying circuit are of coupled connections by capacitance group, power amplification circuit is connected with loudspeaker, has first filter capacitor and first electric capacity in the capacitance group, single-chip microcomputer passes through the induction of signal threshold values of a program setting even level induction of signal amplifying circuit again, this threshold values is slightly larger than the signal of above-mentioned intensity, this moment, even level induction of signal amplifying circuit can't pass through the signal of the intensity of first capacitive sensing setting, the signal of the signal of the output of power amplification circuit is directly passed to loudspeaker like this, loudspeaker send a little than high " dripping; drip; the drip " alarm sound put of input signal strength, when there is noise in the external world, loudspeaker are vibrated by noise contributions, the loudspeaker interior loop is also vibrated, the magnetic line of force of cutting loudspeaker upper magnet produces electric current during the coil vibration, this electric current with power amplification circuit in the electric current stack signal that makes power amplification circuit produce surpass the signal of the intensity of setting, this moment, even level induction of signal amplifying circuit can be by the signal of capacitive sensing to the intensity that is better than setting, even level induction of signal amplifying circuit amplifies this signal from the signal input part of single-chip microcomputer by even level to be imported, when single-chip microcomputer receives this signal, programmed control outputs to even level signal feedback amplifying circuit to this signal from another output terminal of single-chip microcomputer, even level by even level signal feedback amplifying circuit is imported loudspeaker after amplifying when becoming bigger sound, emit stronger " dripping; drip; drip " alarm sound from loudspeaker, external sound is strong more like this, horn coil vibration cutting magnetic line is strong more, the electric current that produces in the coil is strong more, the signal of that even level induction of signal amplifying circuit induction is strong more, advancing even level induction of signal amplifying circuit amplifies again through the single-chip microcomputer processing, the sound that produces when several grades of signal feedback amplifying circuits amplify the input loudspeaker is big more, when opposite outside noise reduces, the electric current that produces in the coil also reduces, the chimes of doom that loudspeaker send also reduces, when the external world is quiet environment, horn coil does not vibrate, no current in the coil, the signal that this moment, power amplification circuit sent remains the signal of the intensity of setting, this signal directly enters loudspeaker, wherein be provided with first filter capacitor in the capacitance group, prevent that other undesired signals from causing power amplification circuit induced currents instability, input control circuit is by the diode and second filter capacitor, when preventing input voltage for negative voltage, calculates by diode bad circuit, second filter capacitor plays the effect of steady current, the signal of signal generating module output is a square wave signal, alarm can send the chimes of doom that interruption " is dripped; drip; drip " like this, and the feedback resistance in the signal generating module and second electric capacity are given even level signal feedback amplifying circuit with the signal feedback of another output terminal output of single-chip microcomputer.Useful benefit of the present utility model is alarm to be changed along with the height of outside noise regulate the size of sending chimes of doom, realize full intellectualized, send high chimes of doom at the high environment of noise, generation accident when preventing reversing automobile, when the little quiet environment of noise, send low chimes of doom, environment is not produced sound pollution.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is the physical circuit figure of enforcement example of the present utility model;

Wherein, 1, signal generating module, 2, input control circuit, 3, feed circuit, 4, two-stage signal induction amplifying circuit, 5, power amplification circuit, 6, the two-stage signal feedback amplifier, 7, loudspeaker, 8, capacitance group, U1, single-chip microcomputer, CD4, first filter capacitor, C5, first electric capacity, CD2, second filter capacitor, C1, second electric capacity, R9, feedback resistance, D2, diode, V1, voltage stabilizer, C3 and CD3, peripheral electric capacity, Z1A and Z1B and Z1C and Z1D, amplifier.

Embodiment

As Fig. 1; shown in Figure 2; the adjustable intelligent acoustic pressure warner device; this alarm comprises loudspeaker 7; this alarm also has signal generating module 1; power amplification circuit 5; even level induction of signal amplifying circuit; even level signal feedback amplifying circuit; input control circuit 2 and feed circuit 3; input circuit has the second filter capacitor CD2 and diode D2 for 2 li; diode D2 shields to entire circuit; have voltage stabilizer V1 and peripheral capacitor C 3 in the feed circuit 3; CD3; prevent that voltage from causing damage when being negative; the second filter capacitor CD2 steady current; signal generating module 1 is controlled by single-chip microcomputer U1; single-chip microcomputer U1 exports square-wave signal; power amplification circuit 5 connects signal output part T0 and the INT1 of single-chip microcomputer U1; power amplification circuit 5 is responsible for square-wave signal is amplified; even level induction of signal amplifying circuit is a two-stage signal induction amplifying circuit 4; two-stage signal induction amplifying circuit 4 is responsible for the signals of power amplification circuit 5 outputs are responded to and imported single-chip microcomputer U1; the signal of power amplification circuit 5 output is responded to by first capacitor C 5 by two-stage signal induction amplifying circuit 4 after through the first filter capacitor CD4 Filtering Processing; if sense signal then be input to the P1.3 interface of single-chip microcomputer U1 after amplifying by amplifier Z1A and Z1D two-stage; even level signal feedback amplifying circuit is a two-stage signal feedback amplifier 6; two-stage signal feedback amplifier 6 is connected with single-chip microcomputer U1; the signal that single-chip microcomputer U1 receives after treatment; by interface P1.5 and P1.6S output by feedback resistance R9 and second capacitor C 1 to 6 li of two-stage signal feedback amplifiers; carry out the two-stage amplification through amplifier Z1C and Z1B then, again signal is imported loudspeaker 7.

This adjustable intelligent acoustic pressure warner device is installed on the automobile, making the induction threshold values of two-stage signal induction amplifying circuit 4 by it for single-chip microcomputer U1 setting program is 83 decibels, wherein the signal of signal generating module 1 output is a square wave signal, frequency is 1HZ, dutycycle is about 50%, this square wave signal is input to power amplification circuit 5 by the output terminal of single-chip microcomputer U1, adjusting power amplification circuit 5 output signals is 60 decibels, when the quiet noiseless in the external world, this moment, loudspeaker 7 interior loop can not vibrated, respond to 60 decibels the signal that amplifying circuit 4 can't be responded to amplifying circuit 5 outputs this moment, amplifying circuit 5 is just directly imported loudspeaker 7 with signal, loudspeaker 7 produce the chimes of doom of about 80 decibels " dripping; drip; drip ", when there is noise in the external world, loudspeaker 7 interior loop are subjected to the magnetic line of force of induction vibration cutting loudspeaker 7 internal magnets of noise, produce the electric current stack in electric current and the power amplification circuit 5 in the coil, power amplification circuit 5 output earth signals reach 4 threshold values that can respond to of two-stage signal induction amplifying circuit like this, two-stage signal induction amplifying circuit 4 passes to single-chip microcomputer U1 by the secondary amplification with signal after receiving induced signal, single-chip microcomputer U1 handles after receiving this signal, give two-stage signal feedback amplifier 6 with this signal feedback, be amplified in by secondary and pass to loudspeaker 7, loudspeaker 7 send " drip; drip; drip " chimes of doom stronger than noise, outside noise is strong more, the chimes of doom that loudspeaker 7 send is strong more, and chimes of doom is along with the size of external sound changes at any time during reversing.

Above-mentioned embodiment is an application of the present utility model; be not the utility model will be limited in this to implement example, can use in other respects yet, such as fire alarm; so long as, all belong to the scope that the utility model is protected based on the technology of carrying out on the utility model basis.

Claims

1. adjustable intelligent acoustic pressure warner device, this alarm comprises loudspeaker, it is characterized in that: this alarm also has signal generating module, power amplification circuit, even level induction of signal amplifying circuit, even level signal feedback amplifying circuit, signal generating module is by Single-chip Controlling, power amplification circuit connects a signal output part of single-chip microcomputer, capacitance group in even level induction of signal amplifying circuit and the power amplification circuit is of coupled connections, even level induction of signal amplifying circuit is connected with a signal receiving end of single-chip microcomputer, another signal output part of single-chip microcomputer is connected power amplification circuit with even level signal feedback amplifying circuit, even level signal feedback amplifying circuit is connected with loudspeaker.

2. adjustable intelligent acoustic pressure warner device according to claim 1 is characterized in that: have first filter capacitor and first electric capacity in the described capacitance group, power amplification circuit is connected with first electric capacity by first filter capacitor.

3. adjustable intelligent acoustic pressure warner device according to claim 1 is characterized in that: described signal generating module is powered by feed circuit, is provided with input control circuit between feed circuit and the signal generating module.

4. adjustable intelligent acoustic pressure warner device according to claim 1 is characterized in that: described even level signal feedback amplifying circuit is connected with single-chip microcomputer by feedback resistance, second electric capacity in the signal generating module.

5. adjustable intelligent acoustic pressure warner device according to claim 1 is characterized in that: described even level induction of signal amplifying circuit is a two-stage signal induction amplifying circuit, has two amplifiers in this circuit.

6. adjustable intelligent acoustic pressure warner device according to claim 1 is characterized in that: the big circuit of described even level signal feedback is a two-stage signal induction amplifying circuit, has two amplifiers in this circuit.

7. adjustable 1 intelligent acoustic pressure warner device according to claim 1 is characterized in that: the signal of described signal generating module output is a square wave signal.

8. adjustable intelligent acoustic pressure warner device according to claim 3 is characterized in that: described feed circuit have voltage stabilizer and peripheral electric capacity.

9. adjustable intelligent acoustic pressure warner device according to claim 3 is characterized in that: have the diode and second filter capacitor in the described input control circuit.