JPS6239903B2 - - Google Patents
Info
- Publication number
- JPS6239903B2 JPS6239903B2 JP56014712A JP1471281A JPS6239903B2 JP S6239903 B2 JPS6239903 B2 JP S6239903B2 JP 56014712 A JP56014712 A JP 56014712A JP 1471281 A JP1471281 A JP 1471281A JP S6239903 B2 JPS6239903 B2 JP S6239903B2
- Authority
- JP
- Japan
- Prior art keywords
- distance
- vehicle
- display
- obstacle
- bar graph
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 description 2
- 229920006353 Acrylite® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
【発明の詳細な説明】
本発明は、自動車の後方障害物までの距離を検
出して表示する自動車用後方障害物表示装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rear obstacle display device for an automobile that detects and displays the distance to an obstacle behind the automobile.
従来、この種の装置に於ける表示は、後方障害
物までの距離が設定値以下になつた時にランプを
点灯するとか、または後方障害物までの距離に応
じてバーグラフを点灯するというようなものが有
つたが、これらの表示では自動車とその後方障害
物との位置関係を明確に表示できず、また後方障
害物の接近にともなう危険度合を十分に運転者に
認知させることが困難であつた。 Conventionally, the display on this type of device was to turn on a lamp when the distance to the rear obstacle became less than a set value, or to turn on a bar graph depending on the distance to the rear obstacle. However, these displays do not clearly indicate the positional relationship between the vehicle and obstacles behind it, and it is difficult to make the driver fully aware of the degree of danger associated with approaching obstacles behind the vehicle. Ta.
そこで、本発明は上記問題に鑑みたもので、表
示部に自動車の絵表示と該絵表示の自動車の後方
に位置し自動車と後方障害物との距離が近づくに
従つてその長さが大きくなる複数のバーグラフを
設けると共に、警報表示記号を設け、後方障害物
との距離に応じてバーグラフを点灯し、さらに前
記距離が所定値以下になつたとき前記警報表示記
号を点灯することにより、自動車とその後方障害
物との位置関係を明確に表示することができ、さ
らに後方障害物に対する危険度合を十分に強く運
転者に認知させることができる自動車用後方障害
物表示装置を提供することを目的とするものであ
る。 Therefore, the present invention has been made in view of the above-mentioned problem, and the display section includes a pictorial display of a car, and the pictorial display is located behind the car, and the length of the pictorial display increases as the distance between the car and the rear obstacle approaches. By providing a plurality of bar graphs and a warning display symbol, lighting the bar graph according to the distance to the rear obstacle, and further lighting the warning display symbol when the distance becomes a predetermined value or less, It is an object of the present invention to provide a rear obstacle display device for a vehicle that can clearly display the positional relationship between a vehicle and an obstacle behind it, and can also make a driver sufficiently aware of the degree of danger to the rear obstacle. This is the purpose.
以下本発明を図示の実施例について説明する。 The present invention will be described below with reference to the illustrated embodiments.
第１図に示す本発明の一実施例において、装置
は超音波の送受信を行う超音波振動子を用いた送
受波器１と、この超音波送受波器１を励振する励
振回路２ａ、および超音波送受波器１の受信信号
を処理演算し、障害物迄の距離を検出する演算装
置２ｂを含む距離検出ユニツト２と、この距離検
出ユニツト２の出力信号に応じて距離表示を行う
表示器３と、トランスミツシヨンと連動しギヤ位
置が後退時、閉成されるスイツチ４と、給電線５
ａ，５ｂ，５ｃを含む給電回路とから成る。そし
て、超音波送受波器１および距離検出ユニツト２
にて距離検出手段を構成している。また、給電回
路において、給電線５ａはキースイツチ６を介し
て車載バツテリ７に接続され、線５ｂは線５ａよ
り距離検出ユニツト２に接続され、線５ｃは線５
ａ並びにギヤスイツチ４を介して表示器３に給電
するように接続されている。なお、線５ｃは自動
車の後退を報知するバツクランプの電源線を共用
することによりスイツチ４を特別に設ける必要が
なくなる。また、超音波振動子としては松下電器
産業(株)製EFR−R40KZを用いている。 In one embodiment of the present invention shown in FIG. 1, the device includes a transducer 1 using an ultrasonic transducer that transmits and receives ultrasonic waves, an excitation circuit 2a that excites the ultrasonic transducer 1, and an ultrasonic A distance detection unit 2 including a calculation device 2b that processes and calculates the received signal of the sound wave transducer 1 and detects the distance to an obstacle, and a display 3 that displays the distance according to the output signal of the distance detection unit 2. , a switch 4 that is linked to the transmission and is closed when the gear position is reversed, and a power supply line 5.
It consists of a power supply circuit including a, 5b, and 5c. Then, the ultrasonic transducer 1 and the distance detection unit 2
constitutes a distance detection means. In the power supply circuit, the power supply line 5a is connected to the vehicle battery 7 via the key switch 6, the line 5b is connected to the distance detection unit 2 via the line 5a, and the line 5c is connected to the distance detection unit 2 via the key switch 6.
a and a gear switch 4 to supply power to the display 3. Note that the line 5c can be used as the power line for the back lamp that notifies the vehicle of moving backward, thereby eliminating the need for a special switch 4. Furthermore, EFR-R40KZ manufactured by Matsushita Electric Industrial Co., Ltd. is used as the ultrasonic transducer.
第２図ａ，ｂは本発明の前提となる基本的な表
示器３の正面図、一部破断側面図である。この第
２図ａ，ｂにおいて、３２は表示器３のケース、
３１は表示パネルで透光性の材料（例えば三菱製
アクリライト（登録商標名））を用いてこの表面
に自動車の側面図３１１とバーグラフの仕切線３
１２が黒色印刷してあり、表示パネル３１の自動
車の側面図３１１の裏面には光源用ランプ３３の
光源が半透過するように白色塗装してある。ま
た、バーグラフの仕切線３１２の線間の後方には
バーグラフ表示用発光ダイオード３４１，３４
２，３４３，３４４，…が10個配置してある。そ
して、発光ダイオード３４１，３４２の２個は赤
色、３４３，３４４…と続く６個の発光ダイオー
ドは橙色、さらに続く２個の発光ダイオードは緑
色となつている。今、自動車のギヤを後退にする
と、ランプ３３が点灯し、後部障害物が250cm以
上離れている場合は第２図ｂの一番右側の発光ダ
イオードが点灯し、225cmから250cm未満の距離で
はその左隣りの発光ダイオードが点灯する。以下
25cm近づく毎に第２図ｂの左側に向つて連続する
発光ダイオードが順次点灯する。そして、50cm未
満では発光ダイオード３４１が点灯する。 FIGS. 2a and 2b are a front view and a partially cutaway side view of the basic display device 3 that is the premise of the present invention. In FIGS. 2a and 2b, 32 is the case of the display 3;
31 is a display panel made of a translucent material (for example, Mitsubishi's Acrylite (registered trademark)), on which a side view of the car 311 and a bar graph partition line 3 are displayed.
12 is printed in black, and the back side of the side view 311 of the automobile on the display panel 31 is painted white so that the light source of the light source lamp 33 is semi-transparent. In addition, light emitting diodes 341 and 34 for bar graph display are provided behind the partition lines 312 of the bar graph.
Ten pieces of 2,343,344,... are arranged. The two light emitting diodes 341 and 342 are red, the next six light emitting diodes 343, 344, etc. are orange, and the next two light emitting diodes are green. Now, when the gear of the car is set to reverse, the lamp 33 lights up, and if the rear obstacle is more than 250 cm away, the rightmost light emitting diode in Figure 2 b lights up, and if the distance is less than 250 cm from 225 cm, the light emitting diode on the right side lights up. The light emitting diode on the left lights up. below
Every time the object approaches 25 cm, a series of light emitting diodes light up in sequence toward the left side of Figure 2b. When the distance is less than 50 cm, the light emitting diode 341 lights up.
第３図は本発明の表示器３の一実施例の正面図
で、例えば螢光表示管にて製作されており、自動
車の側面図３２０と、13個のバーグラフ３２１，
３２２，３２３，３２４，３２５，３２６，３２
７，３２８，３２９，３２１０，３２１１，３２
１２，３２１３と、単位スケール３２０１と、警
告文字STOP３２００とにより構成されている。
そして、その作動は、自動車のギヤを後退にする
と、自動車の側面図３２０及び単位スケール３２
０１が発光する。この時、普通乗用車では第３図
ｂの如く、またバス、ワゴン車では第３図Ｃの如
く自動車の側面図３２０が発光場所を変えること
により、同一場所に描き出され発光する。そし
て、13個のバーグラフのうち３２１，３２２，３
２３の３個は赤色、３２４〜３２１０の７個は黄
色、３２１１，３２１２，３２１３の３個は緑色
の発光をする。そして、点灯モードは、後方障害
物との距離が２ｍ40cm以上の時は３２１３のバー
グラフ、２ｍ20cm以上２ｍ40cm未満は３２１２の
バーグラフというように20cm毎にバーグラフが３
２４まで順次１個ずつ点灯し、40cm以上60cm未満
では３２３のバーグラフ、20cm以上40cm未満では
３２３と３２２のバーグラフ、20cm未満では３２
３，３２２，３２１のバーグラフが同時に点灯し
危険をより一層分るように表示する。また、60cm
未満では警告文字STOP３２００が赤色で点灯し
運転者に注意を喚起する。また、この実施例では
後方障害物との距離が近づくに従つてバーグラフ
の大きさも大きくなるようにしているから、上記
色の変化および警告文字STOP３２００の点灯に
加え、自動車と後方障害物との位置関係をより強
調して示唆することができる。 FIG. 3 is a front view of one embodiment of the display 3 of the present invention, which is made of, for example, a fluorescent display tube, and includes a side view 320 of a car, 13 bar graphs 321,
322, 323, 324, 325, 326, 32
7,328,329,3210,3211,32
12,3213, a unit scale 3201, and a warning character STOP3200.
The operation is performed when the gear of the car is set to reverse, the side view 320 of the car and the unit scale 32 are shown.
01 emits light. At this time, the side view 320 of the vehicle is drawn at the same location and emitted light by changing the light emitting location, as shown in FIG. 3B for an ordinary passenger car, and as shown in FIG. 3C for a bus or wagon. And out of 13 bar graphs, 321, 322, 3
Three of them 23 emit red, seven of 324 to 3210 emit yellow, and three of 3211, 3212, and 3213 emit green. In the lighting mode, when the distance to the rear obstacle is 2 m 40 cm or more, the bar graph is 3213, and when the distance to the rear obstacle is 2 m 20 cm or more and less than 2 m 40 cm, the bar graph is 3212, and so on, 3 bar graphs are displayed every 20 cm.
The bar graphs will light up one by one up to 24, 323 bar graph for 40 cm or more and less than 60 cm, 323 and 322 bar graphs for 20 cm or more and less than 40 cm, 32 for less than 20 cm.
Bar graphs 3, 322, and 321 light up at the same time to make the danger even more obvious. Also, 60cm
If it is less than 1, the warning character STOP3200 lights up in red to alert the driver. In addition, in this embodiment, the size of the bar graph increases as the distance to the rear obstacle approaches, so in addition to the above-mentioned color change and lighting of warning letters STOP 3200, the distance between the vehicle and the rear obstacle increases. Positional relationships can be emphasized and suggested.
なお、上記実施例では、超音波を用いて後方障
害物を検出するものを示したが、光、電波、接触
子等を用いて検出してもよい。また、バーグラフ
の太さ、あるいは検知表示間隔は均一でなくても
例えば距離に応じて変化したものでもよい。さら
に、表示器３における自動車の絵表示を、第２図
ａの側面図３１１あるいは第３図ａに示す普通乗
用車とバスの後方部の側面図３２０として示した
が、普通乗用車、バス、トラツク、ダンプカー等
その車両に良く合つた絵で一部でなくても全体側
面図でも良い。 In the above embodiment, the rear obstacle is detected using ultrasonic waves, but it may also be detected using light, radio waves, contacts, etc. Further, the thickness of the bar graph or the detection display interval may not be uniform, but may vary depending on the distance, for example. Furthermore, although the pictorial representation of a car on the display 3 is shown as a side view 311 in FIG. 2a or a rear side view 320 of an ordinary passenger car and a bus shown in FIG. A picture that fits well with the vehicle, such as a dump truck, may be an entire side view, even if it is not just a part of it.
以上述べたように本発明では、自動車の後方障
害物までの距離を検出する距離検出手段の検出結
果を表示する表示器を備え、該表示器の表示部に
自動車の絵表示と該絵表示の自動車の後方に位置
し自動車と後方障害物との距離が近づくに従つて
その長さが大きくなる複数のバーグラフを設ける
と共に、警報表示記号を設け、前記距離検出手段
からの信号に応じて該バーグラフを点灯表示し、
該バーグラフの点灯状態と前記自動車の絵表示と
の相対関係により自動車の後方障害物までの距離
を表示すると共に、前記距離が所定値以下となつ
たとき前記警報表示記号を点灯表示するようにし
ているから、自動車とその後方障害物との位置関
係を自動車の絵表示と距離に応じて長さの変化す
るバーグラフ表示にて明確に表示することがで
き、さらに後方障害物に対する危険度合を運転操
作に気を取られやすい運転者に十分に強く認知さ
せることができるという優れた効果がある。 As described above, the present invention includes a display device that displays the detection result of the distance detection means for detecting the distance to an obstacle behind the vehicle, and a pictorial display of the vehicle and a pictorial display of the vehicle on the display section of the display device. A plurality of bar graphs are provided at the rear of the vehicle and increase in length as the distance between the vehicle and the rear obstacle approaches, and a warning display symbol is provided, and a warning display symbol is provided in response to a signal from the distance detecting means. The bar graph is lit and displayed.
The distance to the obstacle behind the vehicle is displayed based on the relative relationship between the lighting state of the bar graph and the pictorial display of the vehicle, and the warning display symbol is displayed by lighting when the distance becomes less than a predetermined value. Because of this, the positional relationship between the vehicle and the obstacles behind it can be clearly displayed using a pictorial display of the vehicle and a bar graph display whose length changes depending on the distance. This has the excellent effect of making drivers who are easily distracted by driving operations sufficiently aware of this.
第１図は本発明の一実施例を示すブロツク図、
第２図ａ，ｂは本発明の前提となる表示器の正面
図、一部破断側面図、第３図ａ，ｂ，ｃは本発明
における表示器の一実施例の各状態の正面図であ
る。
１，２……距離検出手段を構成する超音波送受
波器、距離検出ユニツト、３……表示器。
FIG. 1 is a block diagram showing one embodiment of the present invention;
Figures 2a and b are front views and partially cutaway side views of the display device that is the premise of the present invention, and Figures 3a, b, and c are front views of each state of an embodiment of the display device according to the present invention. be. 1, 2... An ultrasonic transducer and a distance detection unit constituting distance detection means, 3... Display device.
Claims (1)
離検出手段と、この距離検出手段の検出結果を表
示する表示器とを備え、該表示器の表示部に自動
車の絵表示と該絵表示の自動車の後方に位置し自
動車と後方障害物との距離が近づくに従つて長さ
が大きくなる複数のバーグラフを設けると共に、
警報表示記号を設け、前記距離検出手段からの信
号に応じて該バーグラフを点灯表示し、該バーグ
ラフの点灯状態と前記自動車の絵表示との相対関
係により自動車の後方障害物までの距離を表示す
ると共に、前記距離が所定値以下になつたとき前
記警報表示記号を点灯表示するようにしたことを
特徴とする自動車後方障害物表示装置。1.Equipped with a distance detection means for detecting the distance to an obstacle behind the vehicle, and a display device for displaying the detection result of the distance detection means, the display section of the display device includes a pictorial representation of a vehicle and a vehicle indicated by the pictorial representation. A plurality of bar graphs are provided behind the vehicle and increase in length as the distance between the vehicle and the rear obstacle approaches;
A warning display symbol is provided, the bar graph is lit in response to a signal from the distance detecting means, and the distance to the obstacle behind the automobile is determined based on the relative relationship between the lit state of the bar graph and the pictorial display of the automobile. What is claimed is: 1. A rear obstacle display device for a motor vehicle, characterized in that the warning display symbol is displayed by lighting when the distance becomes equal to or less than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56014712A JPS57128868A (en) | 1981-02-03 | 1981-02-03 | Display device for obstacle at back for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56014712A JPS57128868A (en) | 1981-02-03 | 1981-02-03 | Display device for obstacle at back for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57128868A JPS57128868A (en) | 1982-08-10 |
| JPS6239903B2 true JPS6239903B2 (en) | 1987-08-25 |
Family
ID=11868759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56014712A Granted JPS57128868A (en) | 1981-02-03 | 1981-02-03 | Display device for obstacle at back for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57128868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0423206U (en) * | 1990-06-20 | 1992-02-26 | ||
| JPH0624805U (en) * | 1992-08-26 | 1994-04-05 | 大沢精工株式会社 | Drilling tool |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57175442A (en) * | 1981-04-21 | 1982-10-28 | Nippon Denso Co Ltd | Obstacle indicator for vehicle |
| JPS59116874U (en) * | 1983-01-28 | 1984-08-07 | 矢崎総業株式会社 | Optical vehicle obstacle detection device |
| JP2000168476A (en) | 1998-09-29 | 2000-06-20 | Denso Corp | Composite device for vehicle |
-
1981
- 1981-02-03 JP JP56014712A patent/JPS57128868A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0423206U (en) * | 1990-06-20 | 1992-02-26 | ||
| JPH0624805U (en) * | 1992-08-26 | 1994-04-05 | 大沢精工株式会社 | Drilling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57128868A (en) | 1982-08-10 |
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