CN204196774U - A kind of engine noise analog system - Google Patents
A kind of engine noise analog system Download PDFInfo
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- CN204196774U CN204196774U CN201420572537.0U CN201420572537U CN204196774U CN 204196774 U CN204196774 U CN 204196774U CN 201420572537 U CN201420572537 U CN 201420572537U CN 204196774 U CN204196774 U CN 204196774U
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Abstract
A kind of engine noise analog system, comprise micro controller system, pyroelectric human body infrared sensor, car speed sensor, prompt tone memory device, gain-programmed amplifier, audio amplifier and loud speaker, the signal output part of described pyroelectric human body infrared sensor and car speed sensor connects the different input ports of micro controller system, described prompt tone memory device connects the communication interface of micro controller system, the audio signal input end of described gain-programmed amplifier and gain control signal input end connect the different output ports of micro controller system respectively, and its output signal drives loud speaker through audio amplifier.The utility model utilizes on pyroelectric human body infrared sensor probe vehicle direct of travel whether have pedestrian, only has during pedestrian and just sends alarm signal, so not only can ensure the safety of pedestrian, and greatly reduce noise pollution, avoid the waste of the energy.
Description
Technical field
The utility model relates to the engine noise analog system that one is applicable to electronlmobil (or other new-energy automobile), pedestrian can be pointed out to take care, belong to automobile technical field.
Background technology
Due to the aggravation of environmental pollution, the exploitation of electronlmobil is all being devoted in countries in the world.The noise of electronlmobil in pure electric low driving process is very low, and be difficult to the attention causing row human or animal, the traffic accident caused thus occurs again and again.
In order to solve the problem, be developed multiple for pointing out pedestrian's safety-conscious elec. vehicle sound prompting device, but known elec. vehicle sound prompting device is all generally the size regulating voice prompt according to the speed of the speed of a motor vehicle, even if when vehicle periphery does not have pedestrian, also prompt tone can be sent, not only cause the waste of energy, and cause serious noise pollution to environment, the also unnecessary advantage having slackened new-energy automobile low-noise energy-saving.
Utility model content
The purpose of this utility model is the drawback for prior art, provides a kind of engine noise analog system, under the prerequisite ensureing pedestrains safety, reduces the noise pollution of electronlmobil and the waste of the energy.
Problem described in the utility model realizes with following technical proposals:
A kind of engine noise analog system, comprise micro controller system, pyroelectric human body infrared sensor, car speed sensor, prompt tone memory device, gain-programmed amplifier, audio amplifier and loud speaker, the signal output part of described pyroelectric human body infrared sensor and car speed sensor connects the different input ports of micro controller system, described prompt tone memory device connects the communication interface of micro controller system, the audio signal input end of described gain-programmed amplifier and gain control signal input end connect the different output ports of micro controller system respectively, and its output signal drives loud speaker through audio amplifier.
Above-mentioned engine noise analog system, also comprises ignition lock gear position sensor in formation, and the mouth of described ignition lock gear position sensor connects the input port of micro controller system.
Above-mentioned engine noise analog system, for the electronlmobil having change speed gear box, also comprises traveling gears sensor in formation, and the gear signal that described traveling gears sensor exports connects the input port of micro controller system.
Above-mentioned engine noise analog system, described loud speaker is arranged in the cabin of electronlmobil, and other parts are arranged in the operator's compartment of electronlmobil.
Above-mentioned engine noise analog system, described pyroelectric human body infrared sensor setting four, they are arranged on the front left side of vehicle body, rear left side, side, front and back and rear right side respectively.
The utility model utilizes on pyroelectric human body infrared sensor probe vehicle direct of travel whether have pedestrian, only has during pedestrian and just sends alarm signal, so not only can ensure the safety of pedestrian, and greatly reduce noise pollution, avoid the waste of the energy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is electrical schematic diagram of the present utility model.
In figure, each label is: U1, micro controller system, U2, gain-programmed amplifier, H1 ~ H4, the first pyroelectric human body infrared sensor ~ the 4th pyroelectric human body infrared sensor, F, audio amplifier, TR, traveling gears sensor, IG, ignition lock gear position sensor, V, car speed sensor, M, prompt tone memory device, SP, loud speaker.
Detailed description of the invention
Referring to Fig. 1, the utility model comprises micro controller system U1, gain-programmed amplifier U2, four pyroelectric human body infrared sensor H1 ~ H4, audio amplifier F, traveling gears sensor TR, ignition lock gear position sensor IG, car speed sensor V, prompt tone memory device M and loud speaker SP.
The model of four pyroelectric human body infrared sensor H1 ~ H4 is D203S, first pyroelectric human body infrared sensor H1 and the 3rd pyroelectric human body infrared sensor H3 is arranged on the position of vehicle front bumper both sides near headlight respectively, second pyroelectric human body infrared sensor H2 and the 4th pyroelectric human body infrared sensor H4 is arranged on the position of vehicle rear bumper both sides near Reverse Sensor respectively, they are respectively used to the front of detection vehicle and whether rear has pedestrian, its detection range can reach 18 meters, because automobile is generally low speed driving there being the section of pedestrian, this detection range can meet operating needs.Traveling gears sensor TR is arranged on the change speed gear box (if having) of automobile, and the signal that it exports can help micro controller system U1 to judge the running state that automobile is current.Ignition lock gear position sensor IG is for gathering the gear signal of ignition lock, each gear due to ignition lock exports (ACC, ON, START) and is 12V voltage, can not directly introduce micro controller system U1, the Main Function of this sensor is step-down, accesses micro controller system U1 after being reduced to 5V level by the 12V voltage of ignition lock.Gain-programmed amplifier U2 is used for the size of control loudspeaker volume, the signal that the size of its gain is held by A0, A1 controls, micro controller system U1 reads the sound signal prestored from prompt tone memory device M, the input end VIN+ of gain-programmed amplifier U2 is delivered to after converting thereof into analog signal, simultaneously according to running state of the vehicle, by P3.1 and P3.2 port outputing gain control signal, realize the control to speaker volume.
The utility model adopts split-type structural, and loud speaker is placed in cabin, and other parts are all installed in operator's compartment, and this split-type structural is more convenient for increasing the configuration quantity of loud speaker.
Principle of work of the present utility model is as follows:
After native system is connected, first micro controller system U1 can receive the output signal of four pyroelectric human body infrared sensor H1 ~ H4, and four on-off signals judge whether vehicle front or rear have people accordingly, if nobody, then not output audio signal, loud speaker does not work; If someone, then according to the mode of operation of the output signal control loudspeaker of other sensor, specifically can be divided into following a few class:
1. ignition lock is in Off/Acc/ON shelves, does not get to Start shelves, and now micro controller system U1 does not receive Start signal, and system prompt sound is in closed condition;
2. vehicle launch, ignition lock gets to Start shelves, and micro controller system U1 receives Start signal, gear signal D shelves, car speed sensor V output signal, then system prompt sound is in opening, and volume rises with the speed of a motor vehicle and increases, and declines and reduce with the speed of a motor vehicle.Certainly, also can according to vehicle condition and experience, the mode of operation of sets itself volume.
At least have two kinds of sound in prompt tone memory device M, be respectively used to vehicle and advance and fall back, wherein, advance sound changes with the speed of a motor vehicle, and the sound that falls back is invariable.
The signal that each sensor in the utility model exports, all can adopt on-off signal, and the master mode of such micro controller system can very simple.
The signal that each sensor exports, when controlling, can adopt decision circuit to judge, such as "AND" logic, "or" logic.Certainly, these decisions circuit both can adopt independent logic circuit chip, the decision circuit that micro controller system also can be utilized intrinsic or program.
Claims (5)
1. an engine noise analog system, it is characterized in that, it comprises micro controller system (U1), pyroelectric human body infrared sensor, car speed sensor (V), prompt tone memory device (M), gain-programmed amplifier (U2), audio amplifier (F) and loud speaker (SP), the signal output part of described pyroelectric human body infrared sensor and car speed sensor (V) connects the different input ports of micro controller system (U1), described prompt tone memory device (M) connects the communication interface of micro controller system (U1), the audio signal input end of described gain-programmed amplifier (U2) and gain control signal input end connect the different output ports of micro controller system (U1) respectively, its output signal drives loud speaker (SP) through audio amplifier (F).
2. a kind of engine noise analog system according to claim 1, is characterized in that, also comprises ignition lock gear position sensor (IG) in formation, and the mouth of described ignition lock gear position sensor (IG) connects the input port of micro controller system (U1).
3. a kind of engine noise analog system according to claim 1 and 2, it is characterized in that, for the electronlmobil having change speed gear box, also comprise traveling gears sensor (TR) in formation, the gear signal that described traveling gears sensor (TR) exports connects the input port of micro controller system (U1).
4. a kind of engine noise analog system according to claim 3, is characterized in that, described loud speaker (SP) is arranged in the cabin of electronlmobil, and other parts are arranged in the operator's compartment of electronlmobil.
5. a kind of engine noise analog system according to claim 4, is characterized in that, described pyroelectric human body infrared sensor setting four, and they are arranged on the front left side of vehicle body, rear left side, side, front and back and rear right side respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420572537.0U CN204196774U (en) | 2013-11-28 | 2014-10-03 | A kind of engine noise analog system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762536 | 2013-11-28 | ||
| CN2013207625368 | 2013-11-28 | ||
| CN201420572537.0U CN204196774U (en) | 2013-11-28 | 2014-10-03 | A kind of engine noise analog system |
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| CN204196774U true CN204196774U (en) | 2015-03-11 |
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| CN201420572537.0U Active CN204196774U (en) | 2013-11-28 | 2014-10-03 | A kind of engine noise analog system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489063A (en) * | 2016-01-13 | 2016-04-13 | 吉林航盛电子有限公司 | New energy vehicle pedestrian sound warning device with active early warning function |
| CN107089184A (en) * | 2017-03-24 | 2017-08-25 | 北京长城华冠汽车科技股份有限公司 | The outer alarming device of car and method |
| CN107187383A (en) * | 2017-04-24 | 2017-09-22 | 北京长城华冠汽车科技股份有限公司 | Electric automobile sound-controlled apparatus and method |
-
2014
- 2014-10-03 CN CN201420572537.0U patent/CN204196774U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489063A (en) * | 2016-01-13 | 2016-04-13 | 吉林航盛电子有限公司 | New energy vehicle pedestrian sound warning device with active early warning function |
| WO2017121110A1 (en) * | 2016-01-13 | 2017-07-20 | 吉林航盛电子有限公司 | Pedestrian sound warning device having active early-warning function for use in new-energy vehicle |
| CN105489063B (en) * | 2016-01-13 | 2018-04-13 | 吉林航盛电子有限公司 | A kind of new-energy automobile pedestrian's sound alarming device with active forewarning |
| CN107089184A (en) * | 2017-03-24 | 2017-08-25 | 北京长城华冠汽车科技股份有限公司 | The outer alarming device of car and method |
| CN107187383A (en) * | 2017-04-24 | 2017-09-22 | 北京长城华冠汽车科技股份有限公司 | Electric automobile sound-controlled apparatus and method |
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