CN202923486U - Automobile voice prompt device based on single chip microcomputer - Google Patents
Automobile voice prompt device based on single chip microcomputer Download PDFInfo
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- CN202923486U CN202923486U CN 201220527462 CN201220527462U CN202923486U CN 202923486 U CN202923486 U CN 202923486U CN 201220527462 CN201220527462 CN 201220527462 CN 201220527462 U CN201220527462 U CN 201220527462U CN 202923486 U CN202923486 U CN 202923486U
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Abstract
The utility model discloses an automobile voice prompt device based on a single chip microcomputer. The automobile voice prompt device comprises a wireless remote controller, a wireless signal receiving module, a power source control module, a voice control module and a power amplifying module, wherein the wireless remote controller is connected with the wireless signal receiving module through wireless signals. The wireless signal receiving module is connected with the power source control module. The power source control module is respectively connected with the voice control module and the power amplifying module. The voice control module is then connected with the power amplifying module. A wireless signal receiver adopted in the automobile voice prompt device has the advantages of being high in stability and precision, and a core chip has the advantages of being fast in response, good in reliability, strong in anti-interference and anti-shock capacities and the like. Due to the fact that the fixed encoding type remote controller is adopted, the automobile voice prompt device has the advantages of being simple in operation, low in cost and the like. In addition, an open frequency range is adopted as carrier frequency of the device, and therefore range of application is broad. The automobile voice prompt device based on the single chip microcomputer is capable of solving the voice prompt problem that in special occasions, a vehicle-mounted horn is forbidden to whistle, and effectively reducing accidental traffic accidents.
Description
Technical field
The utility model relates to a kind of new automobile sound prompt device, relates in particular to a kind of SCM Based automobile speech prompt system.
Background technology
At present, the sound of blowing a whistle that general automobile sends is all a kind of single " ticking " sound, and its audio frequency is dull, and volume is grand, and ambient environment are caused serious noise pollution.Having relatively high expectations to ambient environment as hospital, school etc. and special period such as the late into the night in a lot of zones, city, carries out traffic control, no tooting.But due to " horn-blowing control ", also usually can make traffic smooth or cause traffic accident.Therefore designing one can at complex road condition and the applied sound prompt device of particular field, have essentiality and feasibility.
The vehicle-mounted voice prompt system of Current Domestic is mainly to use singlechip technology to combine with speech chip and sensor application technology, can carry out detection and the voice suggestion of the aspects such as the speed of a motor vehicle, oil mass, safety strap, reversing, but equipment cost is relatively too high and for the function that does not provide under particular surroundings the outer voice prompting of car, so it is low and can have essentiality and feasibility at the intelligent prompt device that special occasions carries out voice suggestion to design a kind of price.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is, a kind of SCM Based automobile speech suggestion device is provided.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of SCM Based automobile speech suggestion device, comprise Digiplex, reception of wireless signals module, energy supply control module, speech control module and power amplifier module, wherein Digiplex is connected with the reception of wireless signals module by wireless signal, the reception of wireless signals module is connected with energy supply control module, energy supply control module is connected with power amplifier module with speech control module respectively, and speech control module is connected with power amplifier module again.
The utility model also has following technical characterstic:
Described speech control module adopts the ISD1730 micro controller system.
Described remote controller adopts regular coding formula remote controller, and the carrier frequency that this remote controller adopts is the 315MHz open frequency range.
The utlity model has following advantage:
1, owing to being given a shock in the driving process and road shocks produce to disturb, the wireless signal receiver that the utility model adopts has stability and precision is high, acp chip have response soon, good reliability, disturbance rejection and the characteristics such as shock resistance is strong.
2, the utility model adopts regular coding formula remote controller, has the advantages such as simple, cheap are installed, and adopts open frequency range as its carrier frequency, applied range.
3, the utility model can solve the voice suggestion problem at the vehicle-mounted loudspeaker no tooting of special occasions, can effectively reduce sporadic traffic accident.
Description of drawings
Fig. 1 is annexation schematic diagram of the present utility model.
Fig. 2 is energy supply control module circuit diagram of the present utility model.
Fig. 3 is voice control module circuit figure of the present utility model.
Fig. 4 is power amplifier module circuit diagram of the present utility model.
Below in conjunction with drawings and Examples, particular content of the present utility model is described in more detail.
The specific embodiment
Below provide specific embodiment of the utility model, need to prove that the utility model is not limited to following specific embodiment, all equivalents of doing on present techniques scheme basis all fall into protection domain of the present utility model.
Defer to technique scheme, as shown in Figure 1, a kind of SCM Based automobile speech suggestion device, comprise Digiplex, reception of wireless signals module, energy supply control module, speech control module and power amplifier module, wherein Digiplex is connected with the reception of wireless signals module by wireless signal, the reception of wireless signals module is connected with energy supply control module, energy supply control module is connected with power amplifier module with speech control module respectively, and speech control module is connected with power amplifier module again.
The carrier frequency that described remote controller adopts is the 315MHz open frequency range of China's regulation.It is not very high requiring due to this device confidentiality, therefore adopt cheap fixed code encode type remote controller, this remote controller has two buttons to control respectively the folding of the two-way relay of wireless receiving module, wherein one the tunnel controls the conducting that triggers power supply, and the switching of suggestion voice is controlled on another road.If when not needing the switch prompting voice, only need the remote controller of a button can complete distant control function.
described energy supply control module circuit diagram as shown in Figure 2, wireless receiving module is always in running order after the engine starting of automobile, power amplification circuit and voice playing circuit are controlled by Digiplex, press the button on Digiplex, in 0.2s (general button press the time of upspringing be about 0.2s), the K switch 1 of wireless receiving module is connected, produce an impulse singla, the high level of pulse charges to cond, after button is upspring, K1 disconnects, cond begins slow discharge, capacitor charging/discharging, discharge time can be by determining (playing time is optionally decided).In the capacitor discharge process, two-stage Schmidt trigger 74HC14 is with capacitor voltage at both ends process shaping conversion, obtain the control signal of forward, the on off state of the relay K 2 of the high-low level signal of Schmidt trigger output in can control based on direct control chart 2, thereby the mode of operation of power ratio control amplifying circuit and voice playing circuit.
The circuit diagram of described speech control module as shown in Figure 3, the speech recording and reproducing of speech control module partly adopts is the Hua Bang new monolithic high-quality voice recording and playback ic ISD1730 that releases of company.Chip internal comprises realizes gain oscillations device and internal memory etc.Simultaneously, this chip has been broken traditional first sampling with automatic control, microphone preamplifier, loudspeaker driving circuit, A/D, synthesize again the mode of analog signal with D/A, directly store analog quantity, tonequality is good, greatly improved the storage density of information, memory contents can be cut off the power supply and be kept 100 years, can record, playback more than 100,000 times, when standard sample frequency 8KHz, can recording playback 30 seconds, reduce sampling frequency and can also further increase record length, operating voltage range is 2.4V one 5.5V, uses very extensive.In the design, employing be independent button pattern, this mode is simple, and function is very powerful, not only has recording, player function, also has F.F., wipe, volume controls, straight-through playback and the function such as reset.When the button work pattern, micro controller system can provide signal by the LED pin and point out mode of operation.Should first all digital ground wires be connected with the simulation ground wire during micro controller system actual fabrication, then connect digital ground wire and simulation ground wire by 0Q resistance.During recording, first length is recorded by the REC button, and after recording was completed, namely available remote controller was controlled.The PLAY player function triggers by falling edge, adopts capacitor charging/discharging to produce falling edge in the design and comes the controlled discharge time, reaches and controls the purpose that the falling edge time-delay arrives, and guarantees that falling edge produces after the voice playing circuit energising.
The circuit diagram of described power amplifier module as shown in Figure 4, micro controller system ISD1730 carries out prime to voice signal and amplifies, but still can only export 0.5W left and right power, for this reason, adopts TDA2030 to carry out rear class and amplifies.TDA2030 is the very good single-tone road high-fidelity power amplification circuit of performance, and its principal feature is that climbing speed is high, transient intermodulation (being called for short the TIM distortion) is little; Another characteristics are that horsepower output is large, at power line voltage ± 14V, and output 14 watts of power (degree of distortion≤0.5%) when load resistor is 4Q.If use two the electric circuit constitute BTL circuit, horsepower output can increase to 35W.Simultaneously, TDA2030 has designed the current-limiting protection function, and peripheral circuit is also very simple, is being applied to more and more widely in various style radio cassette players and clear stereo equipment.Only provide on automobile+single supply of 12v (boost or the level conversion cost too large, and cause the power-efficient low), so adopt the connection of 12V single supply, wherein capacitor C 1 and C2 are the power supply high-frequency bypass capacitor, prevent that circuit from producing self-excitation.
Press the switch on Digiplex before the utility model is in running order, power turn-on, install in running order, power amplification circuit and voice playing circuit conducting at the special occasions of no tooting, as run into the dangerous scene that needs voice suggestion, chaufeur is pressed the switch of controlling speech play on remote controller, the reception of wireless signals module receives signal, and speech control module sends phonetic order and amplifies laggard lang sound prompting through power amplifier module, reminds the pedestrian to dodge.The speech control module the inside can shift to an earlier date the suggestion voice of the different occasions of typing, can utilize the switch on Digiplex to switch, to guarantee correctness and the actual effect of voice suggestion.
Claims (3)
1. SCM Based automobile speech suggestion device, it is characterized in that, comprise Digiplex, reception of wireless signals module, energy supply control module, speech control module and power amplifier module, wherein Digiplex is connected with the reception of wireless signals module by wireless signal, the reception of wireless signals module is connected with energy supply control module, energy supply control module is connected with power amplifier module with speech control module respectively, and speech control module is connected with power amplifier module again.
2. SCM Based automobile speech suggestion device according to claim 1, is characterized in that, described speech control module adopts the ISD1730 micro controller system.
3. SCM Based automobile speech suggestion device according to claim 1, is characterized in that, described remote controller adopts regular coding formula remote controller, and the carrier frequency that this remote controller adopts is the 315MHz open frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527462 CN202923486U (en) | 2012-10-15 | 2012-10-15 | Automobile voice prompt device based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527462 CN202923486U (en) | 2012-10-15 | 2012-10-15 | Automobile voice prompt device based on single chip microcomputer |
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| Publication Number | Publication Date |
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| CN202923486U true CN202923486U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220527462 Expired - Fee Related CN202923486U (en) | 2012-10-15 | 2012-10-15 | Automobile voice prompt device based on single chip microcomputer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240446A (en) * | 2016-10-09 | 2016-12-21 | 无锡职业技术学院 | Indicator given precedence to by motor vehicles |
| CN108648737A (en) * | 2018-06-15 | 2018-10-12 | 广西职业技术学院 | A kind of electronic organ for integrated amplifier electric circuit teaching |
-
2012
- 2012-10-15 CN CN 201220527462 patent/CN202923486U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240446A (en) * | 2016-10-09 | 2016-12-21 | 无锡职业技术学院 | Indicator given precedence to by motor vehicles |
| CN106240446B (en) * | 2016-10-09 | 2018-10-16 | 无锡职业技术学院 | Motor vehicle gives precedence to indicator |
| CN108648737A (en) * | 2018-06-15 | 2018-10-12 | 广西职业技术学院 | A kind of electronic organ for integrated amplifier electric circuit teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20131015 |