CN101078770A - Reversing radar capable of detecting obstacle azimuth and profile - Google Patents
Reversing radar capable of detecting obstacle azimuth and profile Download PDFInfo
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- CN101078770A CN101078770A CN 200610078451 CN200610078451A CN101078770A CN 101078770 A CN101078770 A CN 101078770A CN 200610078451 CN200610078451 CN 200610078451 CN 200610078451 A CN200610078451 A CN 200610078451A CN 101078770 A CN101078770 A CN 101078770A
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Abstract
The invention relates to a back-a-car radar, which can detect barrier orientation and shape. It mainly comprises a central processing unit, an ultrasonic emitting/receiving module, a signal amplifying module, a memory unit and a visual warning module. Detecting range of ultrasonic sensor is divided into several minimal detecting regions; and they are stored in corresponding addresses in the memory unit; and again stats of minimal detecting regions can be displayed by all displaying region on the display unit correspondingly. In this way not only actual position of barrier can be detected but also barrier size and shape can be detected.
Description
Technical field
The present invention relates to a kind of radar for backing car, particularly relate to a kind of radar for backing car that detects barrier orientation and external form.
Background technology
In science and technology more and more flourishing today, several basic outfits that become automobile of radar for backing car, general radar for backing car is in tailstock place installing ultrasound sensors, when entering backward gear, start radar for backing car, by the emission ultrasonic, after making ultrasonic run into barrier turning back, receive by this sensor again, pass on the barrier message to give the driver with auditory tone cues and assist the process of finishing parking smoothly.
General preferable astern radar device, common relative position of further pointing out driver's barrier and vehicle, for example:
1. after utilizing ultrasonic to run into barrier to turn back, calculate the relative position of barrier and vehicle, on a display, show again.
2. after utilizing a video camera to take the rear image, show by display again.
Only in the said apparatus,, but can't know the size and the external form that show barrier, therefore for helping the driver to judge that rear obstacle still has blind spot by receiving the relative position that the ultrasonic union goes out barrier and vehicle; Though and the utilization video camera is taken size and the external form that the rear view of vehicle image can show barrier truly, it is higher only the required cost of video camera to be installed, and therefore, waits to seek a preferable improvement project.
This shows that above-mentioned existing radar for backing car obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel the detected barrier orientation and the radar for backing car of external form, just becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing radar for backing car exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of novel the detected barrier orientation and the radar for backing car of external form, can improve general existing radar for backing car, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing radar for backing car exists, and provide a kind of novel the detected barrier orientation and the radar for backing car of external form, technical matters to be solved is to make it need not utilize video camera to take the rear view of vehicle image, can detect the orientation and the external form of barrier, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to the detected barrier orientation of the present invention's proposition and the radar for backing car of external form, it mainly comprises: a CPU (central processing unit) is a processing enter of the present invention; One ultrasonic transmit/receive module, in order to emission and reception ultrasonic, it comprises a plurality of sensor drive driving circuits and a plurality of ultrasound sensors, wherein each ultrasound sensors is to see through sensor drive driving circuit respectively to connect aforementioned CPU (central processing unit), drives ultrasound sensors by central processing unit controls and sends ultrasonic; One signal amplification module, be to be connected between aforementioned CPU (central processing unit) and the ultrasonic transmit/receive module, amplify in order to the signal that ultrasound sensors is received, send into CPU (central processing unit) again, after CPU (central processing unit) receives signal, can send and receive the distance that the supersonic time interval calculates barrier by ultrasound sensors; One mnemon is to connect aforementioned CPU (central processing unit), and dividing in it has a plurality of addresses, by CPU (central processing unit) the sensing range of all ultrasound sensors is divided into a plurality of small sensing areas after, in each address, store the state of a small sensing area; One visual alarm module, be to comprise a display switch circuit and a display unit, wherein this display unit is that the transmission display on-off circuit connects aforementioned CPU (central processing unit), and described display unit being divided into a plurality of viewing areas by CPU (central processing unit), each viewing area is the corresponding small sensing area state that shows the aforementioned memory cell internal memory.
The present invention is divided into several small sensing areas by the sensing range with ultrasound sensors, and be stored in place, corresponding address in the mnemon, be the corresponding small sensing area state that shows by each viewing area on the display unit again, demonstrate the plane external form of barrier with emulation.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The aforesaid radar for backing car that detects barrier orientation and external form, wherein said ultrasonic transmit/receive module further comprises a multiplexer, be to connect this CPU (central processing unit), sensor drive driving circuit and signal amplification module, select to send into the signal that the signal amplification module amplifies by the switching of described multiplexer.
The aforesaid radar for backing car that detects barrier orientation and external form, wherein said mnemon can in be built in the CPU (central processing unit), this CPU (central processing unit) can be the microprocessor that a model is ATMega8.
The aforesaid radar for backing car that detects barrier orientation and external form, it further comprises a sound alarm module, and it comprises a voice drive circuit and a hummer, and this hummer sees through voice drive circuit and connects this CPU (central processing unit).
The present invention compared with prior art has tangible advantage and beneficial effect.Via as can be known above-mentioned, a kind of radar for backing car that detects barrier orientation and external form of the present invention, it mainly comprises a CPU (central processing unit), a ultrasonic transmit/receive module, a signal amplification module, a mnemon and a visual alarm module, be divided into several small sensing areas by sensing range with ultrasound sensors, and be stored in place, corresponding address in the mnemon, again by the small sensing area state of the corresponding demonstration in each viewing area on the display unit, not only can detect the physical location of barrier thus, also can detect the size and the external form of barrier.
By technique scheme, the radar for backing car that the present invention can detect barrier orientation and external form has following advantage at least: radar for backing car of the present invention can carry out accurate in locating for detected barrier, and then the positioning result correspondence is stored in the mnemon, demonstrate positioning result by the display unit correspondence again, therefore radar for backing car of the present invention not only can detect the physical location of barrier, also can detect the size and the external form of barrier.
In sum, the radar for backing car of the detected barrier of novelty of the present invention orientation and external form need not utilize video camera to take the rear view of vehicle image, can detect the orientation and the external form of barrier.The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing radar for backing car has the effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the calcspar of astern radar device of the present invention.
Fig. 2 is the circuit diagram of astern radar device of the present invention.
Fig. 3 is the synoptic diagram that the present invention is divided into the ultrasound sensors sensing range a plurality of small sensing areas.
Fig. 4 is that display unit of the present invention shows the barrier synoptic diagram.
10: CPU (central processing unit) 20: the ultrasonic transmit/receive module
21: sensor drive driving circuit 221,222: ultrasound sensors
223,224: ultrasound sensors 225: sensing range
226: small sensing area 23: multiplexer
30: signal amplification module 40: mnemon
50: visual alarm module 51: the display switch circuit
52: display unit 60: the sound alarm module
61: voice drive circuit 62: hummer
70: barrier
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the detected barrier orientation that foundation the present invention is proposed and its embodiment of radar for backing car, structure, feature and the effect thereof of external form, describe in detail as after.
See also Fig. 1, shown in Figure 2, be about a preferred embodiment of the present invention, radar for backing car of the present invention comprises a CPU (central processing unit) 10, a ultrasonic transmit/receive module 20, a signal amplification module 30, a mnemon 40, a visual alarm module 50 and a sound alarm module 60.
This CPU (central processing unit) 10 is processing enters of the present invention, is that employing one model is the microprocessor (as shown in Figure 2) of ATMega8 in the present embodiment, and it contains the internal memory of 1kb.
This ultrasonic transmit/receive module 20 be in order to emission with receive ultrasonic, it comprises four sensor drive driving circuits 21, four ultrasound sensors 221,222,223,224 and multiplexers 23 in the present embodiment, see also shown in Figure 2, wherein:
These sensor drive driving circuits 21 mainly are to comprise a transistor Q1～Q4 and a transformer T1～T4 respectively, wherein the base stage of transistor Q1～Q4 is the 13rd～16 pin that connects the ATMega8 microprocessor respectively, after sending the pulse wave signal by CPU (central processing unit) 10, amplify through transistor Q1～Q4 and transformer T1～T4 again;
These ultrasound sensors the 221,222,223, the 224th see through a sensor drive driving circuit 21 respectively and connect aforementioned CPU (central processing unit) 10, send ultrasonic by the pulse wave signal controlling and driving ultrasound sensors 221,222,223,224 after transistor Q1～Q4 and transformer T1～T4 amplification;
This multiplexer 23 is the 9th and 10 pins and the sensor drive driving circuits 21 that connect this ATMega8 microprocessor.
This signal amplification module 30 is to connect the 24th pin of aforementioned ATMega8 microprocessor and the multiplexer 23 of ultrasonic transmit/receive module 20, switching by aforementioned multiplexer 23 is selected, with ultrasound sensors 221,222,223,224 signals that receive are sent into described signal amplification module 30 and are amplified, sending into CPU (central processing unit) 10 again handles, in the present embodiment, see also shown in Figure 2, mainly be by three OP amplifier U1C, U1D and U1A constitute, by amplifier U1C with ultrasound sensors 221,222,223, after 224 signals that receive amplify, after delivering to the bandpass filter filtering noise of forming by amplifier U1D and resistance R 5 and capacitor C 8, by amplifier U1A signal is amplified once more again, after diode D3 rectification, send in the CPU (central processing unit) 10, after CPU (central processing unit) 10 receives signal, can be by ultrasound sensors 221,222,223,224 send and receive the supersonic time interval calculates barrier and ultrasound sensors 221,222,223,224 distance.
This mnemon 40 connects aforementioned CPU (central processing unit) 10, divide in it a plurality of addresses are arranged, by CPU (central processing unit) 10 sensing range 225 of all ultrasound sensors 221,222,223,224 is divided into a plurality of small sensing areas 226 backs (as shown in Figure 3), in each address, store the state of a small sensing area 226, in the present embodiment, described mnemon 40 is the internal memory that the ATMega8 microprocessor includes.
This visual alarm module 50 is to comprise a display switch circuit 51 and a display unit 52, wherein:
Described visual alarm module 50 has two display switch circuit 51 in the present embodiment, is main the composition by transistor Q7 and Q18 respectively, connects the 31st (data signals) and 30 (frenquency signal) pin of ATMega8 microprocessor;
This display unit 52 is a LCD (Liquid CrystalDisplay in the present embodiment, LCD), transmission display on-off circuit 51 connects aforementioned CPU (central processing unit) 10, and described LCD is divided into a plurality of viewing areas by CPU (central processing unit) 10, each viewing area is corresponding small sensing area 226 states that show aforementioned memory cell 40 internal memories, thereby can demonstrate position, size and the external form (as shown in Figure 4) of barrier generally.
This sound alarm module 60 is to comprise a voice drive circuit 61 and a hummer 62 in the present embodiment, and this hummer 62 sees through the 1st and 12 pins that voice drive circuit 61 connects the ATMega8 microprocessor.
The present invention detects the method for the distance of barrier in addition, see also shown in Figure 3 again, one barrier 70 can be sensed by two ultrasound sensors 221,222 wherein, and be L1 and L2 by the distance that CPU (central processing unit) 10 calculates barrier and ultrasound sensors 221,222, add that the distance between the ultrasound sensors 221,222 is known (being assumed to be X), therefore can utilize the air line distance Y after triangulo operation approximately calculates the obstacle distance car, thereby be shown in (as shown in Figure 4) on the display unit 52.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (5)
1, a kind of radar for backing car that detects barrier orientation and external form is characterized in that it mainly comprises:
One CPU (central processing unit);
One ultrasonic transmit/receive module, it comprises a plurality of sensor drive driving circuits and a plurality of ultrasound sensors, wherein each ultrasound sensors is to see through sensor drive driving circuit respectively to connect aforementioned CPU (central processing unit), drives ultrasound sensors by central processing unit controls and sends ultrasonic;
One signal amplification module is to be connected between aforementioned CPU (central processing unit) and the ultrasonic transmit/receive module, amplifies in order to the signal that ultrasound sensors is received, and sends into CPU (central processing unit) again;
One mnemon is to connect aforementioned CPU (central processing unit), and dividing in it has a plurality of addresses, by CPU (central processing unit) the sensing range of all ultrasound sensors is divided into a plurality of small sensing areas after, in each address, store the state of a small sensing area;
One visual alarm module, be to comprise a display switch circuit and a display unit, wherein this display unit is that the transmission display on-off circuit connects aforementioned CPU (central processing unit), and by CPU (central processing unit) described display unit is divided into a plurality of viewing areas, the corresponding small sensing area state that shows the aforementioned memory cell internal memory in each viewing area.
2, the radar for backing car that detects barrier orientation and external form according to claim 1, it is characterized in that wherein said this ultrasonic transmit/receive module further comprises a multiplexer, be to connect this CPU (central processing unit), sensor drive driving circuit and signal amplification module, select to send into the signal that the signal amplification module amplifies by the switching of described multiplexer.
3, the radar for backing car that detects barrier orientation and external form according to claim 1, it is characterized in that it further comprises a sound alarm module, it comprises a voice drive circuit and a hummer, and this hummer sees through voice drive circuit and connects this CPU (central processing unit).
4,, it is characterized in that being built in the CPU (central processing unit) in wherein said this mnemon according to the described radar for backing car that detects barrier orientation and external form of arbitrary claim in the claim 1 to 3.
5, the radar for backing car that detects barrier orientation and external form according to claim 4 is characterized in that wherein said this CPU (central processing unit) is that a model is the microprocessor of ATMega8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610078451 CN101078770A (en) | 2006-05-26 | 2006-05-26 | Reversing radar capable of detecting obstacle azimuth and profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610078451 CN101078770A (en) | 2006-05-26 | 2006-05-26 | Reversing radar capable of detecting obstacle azimuth and profile |
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| CN101078770A true CN101078770A (en) | 2007-11-28 |
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| CN 200610078451 Pending CN101078770A (en) | 2006-05-26 | 2006-05-26 | Reversing radar capable of detecting obstacle azimuth and profile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900814A (en) * | 2010-07-09 | 2010-12-01 | 深圳市豪恩电子科技股份有限公司 | Reversing radar system and detection method |
| CN102765409A (en) * | 2012-07-31 | 2012-11-07 | 上海中科高等研究院 | Train collision avoidance system based on acoustic echo detection and collision avoidance method thereof |
| CN103048661A (en) * | 2011-10-14 | 2013-04-17 | 现代自动车株式会社 | Parking area detection system and method thereof using mesh space analysis |
| TWI621868B (en) * | 2017-06-21 | 2018-04-21 | Univ Kun Shan | System and method for guiding brain waves to blind people |
| CN110909573A (en) * | 2018-09-17 | 2020-03-24 | 阿里巴巴集团控股有限公司 | Information processing method and device, and method for identifying distance between person and shelf |
-
2006
- 2006-05-26 CN CN 200610078451 patent/CN101078770A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900814A (en) * | 2010-07-09 | 2010-12-01 | 深圳市豪恩电子科技股份有限公司 | Reversing radar system and detection method |
| CN101900814B (en) * | 2010-07-09 | 2012-09-05 | 深圳市豪恩电子科技股份有限公司 | Reversing radar system and detection method |
| CN103048661A (en) * | 2011-10-14 | 2013-04-17 | 现代自动车株式会社 | Parking area detection system and method thereof using mesh space analysis |
| CN103048661B (en) * | 2011-10-14 | 2016-12-14 | 现代自动车株式会社 | Use dock area detection system and the method for mesh space analysis |
| CN102765409A (en) * | 2012-07-31 | 2012-11-07 | 上海中科高等研究院 | Train collision avoidance system based on acoustic echo detection and collision avoidance method thereof |
| TWI621868B (en) * | 2017-06-21 | 2018-04-21 | Univ Kun Shan | System and method for guiding brain waves to blind people |
| CN110909573A (en) * | 2018-09-17 | 2020-03-24 | 阿里巴巴集团控股有限公司 | Information processing method and device, and method for identifying distance between person and shelf |
| CN110909573B (en) * | 2018-09-17 | 2023-05-02 | 阿里巴巴集团控股有限公司 | Information processing method and device and method for identifying distance between person and goods shelf |
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