JP3140863B2 - Automotive ultrasonic detector - Google Patents
Automotive ultrasonic detectorInfo
- Publication number
- JP3140863B2 JP3140863B2 JP04288231A JP28823192A JP3140863B2 JP 3140863 B2 JP3140863 B2 JP 3140863B2 JP 04288231 A JP04288231 A JP 04288231A JP 28823192 A JP28823192 A JP 28823192A JP 3140863 B2 JP3140863 B2 JP 3140863B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- wave
- gate
- vehicle
- waves
- 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 - Lifetime
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば自動車等車両に
搭載して接近する障害物を超音波で検知する車載用超音
波検知器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle ultrasonic detector mounted on a vehicle such as an automobile for detecting an approaching obstacle by ultrasonic waves.
【０００２】[0002]
【従来の技術】従来の車載用超音波検知器は、電源を投
入してから或る一定期間経過後に送波及び受波の処理を
行い、異常状態及び障害物を検知したとき、これを報知
する動作を行うものである。2. Description of the Related Art A conventional on-vehicle ultrasonic detector performs transmission and reception processing after a certain period of time has passed since the power was turned on, and when an abnormal state and an obstacle are detected, this is notified. Is performed.
【０００３】[0003]
【発明が解決しようとする課題】前記した従来の車載用
超音波検知器の機構で、電源を投入してから或る一定期
間経過後に送波及び受波の処理を行うことは、異常状態
及び障害物検知の動作から通常の動作に復帰するまでに
かなりの処理期間を要することがあり、また車両の走行
中に電源を投入すると、走行中の風切りの音などにより
機器が誤動作してしまうなどの問題点がある。In the above-described conventional on-vehicle ultrasonic detector mechanism, the processing of transmitting and receiving waves after a certain period of time has elapsed since the power was turned on is an abnormal state and an abnormal state. It may take a considerable processing time to return to normal operation from the operation of obstacle detection, and if the power is turned on while the vehicle is running, the equipment may malfunction due to the sound of wind breaking while driving etc. There is a problem.
【０００４】本発明はこのような問題点に鑑み、電源を
投入してから或る一定期間経過後に送波及び受波の処理
を行うに際して、異常状態及び障害物検知の動作から通
常の動作に復帰するまでの処理を迅速に、しかも確実に
行うとともに、車両の走行中に電源を投入しても、車両
走行中の風切りの音などにより機器が誤動作することを
防止することを目的としている。The present invention has been made in view of such a problem, and when transmitting and receiving waves after a certain period of time after turning on the power, the operation of detecting an abnormal state and an obstacle is changed from a normal operation to a normal operation. It is an object of the present invention to quickly and surely perform a process until returning to a normal state, and to prevent a device from malfunctioning due to a wind noise or the like while the vehicle is running even if the power is turned on while the vehicle is running.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
めに、請求項１の発明は車両に搭載され車両の周囲に超
音波を間欠的に繰り返し送波する超音波送波器と、車両
に搭載され少なくとも超音波送波器から送波した超音波
の障害物による反射波を受波可能な超音波受波器と、超
音波送波器からの超音波の送波後に設定した検知ゲート
内に超音波受波器が超音波を受波したときに障害物の存
在を報知する障害物報知手段と、超音波送波器からの超
音波の送波後に検知ゲートが設定されるよりも短い期間
内に設定した検知器異常チェックゲートに超音波受波器
が超音波を受波しない状態が超音波の複数回の送波に対
して連続したときに超音波送波器または超音波受波器の
異常として報知する異常報知手段と、電源投入後の一定
期間は超音波送波器からの超音波の送波の繰り返し間隔
を常時よりも短くするとともに検知ゲートを設定せずに
検知器異常チェックゲートのみを設定して異常報知手段
のみ動作させる手段とを備えるものである。In order to achieve the above-mentioned object, the invention according to claim 1 is mounted on a vehicle and installed around a vehicle.
Ultrasonic transmitters that intermittently transmit sound waves, and vehicles
Ultrasonic waves transmitted from at least the ultrasonic transmitter mounted on the
Ultrasonic receiver capable of receiving reflected waves from obstacles
Detection gate set after transmission of ultrasonic wave from ultrasonic transmitter
When an ultrasonic receiver receives ultrasonic waves inside the
Obstacle notifying means for notifying the presence and supersonic wave from the ultrasonic transmitter
Shorter than the detection gate is set after the sound wave is transmitted
Ultrasonic receiver on detector abnormality check gate set in
Is not receiving ultrasonic waves when multiple transmissions of ultrasonic waves occur.
The ultrasonic transmitter or ultrasonic receiver
Abnormality notification means for reporting as abnormal, and constant after power-on
The period is the repetition interval of the transmission of the ultrasonic wave from the ultrasonic transmitter
Shorter than usual and without setting the detection gate
Abnormality notification means by setting only the detector abnormality check gate
And means for operating only .
【０００６】請求項２の発明は、車両に搭載され車両の
周囲に超音波を間欠的に繰り返し送波する超音波送波器
と、車両に搭載され少なくとも超音波送波器から送波し
た超音波の障害物による反射波を受波可能な超音波受波
器と、超音波送波器からの超音波の送波後に設定した検
知ゲート内に超音波受波器が超音波を受波したときに障
害物の存在を報知する障害物報知手段と、超音波送波器
からの超音波の送波後に検知ゲートが設定されるよりも
短い期間内に設定した検知器異常チェックゲートに超音
波受波器が超音波を受波しない状態が超音波の複数回の
送波に対して連続したときに超音波送波器または超音波
受波器の異常として報知する異常報知手段と、電源投入
後の一定期間は異常報知手段のみ動作させる手段とを備
えるものである。 請求項３の発明は、請求項２の発明に
おいて、前記検知ゲートの終了後から超音波の次の送波
までの間の期間に雑音監視ゲートを設定し、検知ゲート
と雑音監視ゲートとの少なくとも一方の全期間に超音波
を受波し続けている状態と等価な状態が生じるとき、送
波器及び受波器の異常と判定する手段を備えるものであ
る。 請求項４の発明は、請求項２の発明において、前記
検知ゲートの終了後から超音波の次の送波までの間の期
間に雑音監視ゲートを設定し、検知ゲートと雑音監視ゲ
ートとの少なくとも一方において超音波を不規則に受波
する状態と等価な状態が生じるとき、車両が走行中であ
ると判定する手段を備えるものである。 [0006] The invention of claim 2 is mounted on a vehicle and mounted on the vehicle.
Ultrasonic transmitter that transmits ultrasonic waves intermittently and repeatedly around
And transmitted from at least the ultrasonic transmitter mounted on the vehicle
Ultrasonic receiver capable of receiving reflected waves due to obstacles of ultrasonic waves
And the detector set after the transmission of ultrasonic waves from the ultrasonic transmitter.
When the ultrasonic receiver receives ultrasonic waves in the knowledge gate,
Obstacle notifying means for notifying the presence of harmful substances, and ultrasonic transmitter
Than the detection gate is set after the transmission of the ultrasonic wave from
Ultra sound on detector abnormality check gate set within a short period
The condition that the wave receiver does not receive the ultrasonic wave
Ultrasonic transmitter or ultrasonic when continuous with the transmission
Abnormality notification means for notifying the receiver of abnormality, and power-on
Means for operating only the abnormality notification means for a certain period after that.
It is something. The invention of claim 3 is the invention of claim 2
The next transmission of the ultrasonic wave after the end of the detection gate
Set a noise monitoring gate in the period between
Ultrasound during the entire period of at least one of
When a state equivalent to the state of continuing to receive
A means for determining that the transducer and the receiver are abnormal.
You. The invention according to claim 4 is the invention according to claim 2, wherein
The period between the end of the detection gate and the next transmission of the ultrasonic wave
Set the noise monitoring gate between the detection gate and the noise monitoring gate.
Irregularly receive ultrasonic waves in at least one of the
When the vehicle is traveling when a condition equivalent to
Is provided.
【０００７】[0007]
【作用】次に本発明の車載用超音波検知器の作用につい
て述べる。制御部から出力された送波信号が送波信号増
幅器に送られてその送波信号増幅器により増幅される。
増幅された信号は残響吸収回路を介してマイクロホンに
印加されることになり、マイクロホンに印加された電気
的信号は、機械的信号に変換されて音波として空中に発
射される。Next, the operation of the on-vehicle ultrasonic detector according to the present invention will be described. The transmission signal output from the control unit is sent to the transmission signal amplifier and amplified by the transmission signal amplifier.
The amplified signal is applied to the microphone via the reverberation absorption circuit, and the electrical signal applied to the microphone is converted into a mechanical signal and emitted into the air as a sound wave.
【０００８】このとき音波が異常状態の発生及び障害物
の存在を検知すると、これに反射されて音波は再びマイ
クロホンに戻ってきて電気信号に変換される。この電気
信号は受波信号増幅器により増幅され、さらに波形整形
回路を介して波形整形されて制御部に入力される。そし
て検知器スイッチがオン状態にあると、電源回路で安定
した電源が作成され制御部に入力されて、検知器動作が
開始する。At this time, when the sound wave detects the occurrence of an abnormal state and the presence of an obstacle, the sound wave is reflected by the sound wave and returns to the microphone again to be converted into an electric signal. This electric signal is amplified by the received signal amplifier, is further input to the control unit are Sei Namikata form via the Sei Namikata form circuits. When the detector switch is in the ON state, a stable power supply is generated by the power supply circuit and input to the control unit, and the detector operation starts.
【０００９】[0009]
【実施例】以下、図面を参照しながら本発明の車載用超
音波検知器の実施例を具体的に説明する。図１は本発明
の車載用超音波検知器の回路ブロック図である。この図
について説明する。制御部１から出力された送波信号
は、送波信号増幅器２により増幅される。その増幅され
た信号は、残響吸収回路３を介して残響音が吸収されて
マイクロホン４に印加される。マイクロホン４に印加さ
れた電気的信号は、機械的信号に変換されて音波として
空中に発射される。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a vehicle-mounted ultrasonic detector according to the present invention. FIG. 1 is a circuit block diagram of a vehicle-mounted ultrasonic detector according to the present invention. This figure will be described. The transmission signal output from the control unit 1 is amplified by the transmission signal amplifier 2. The amplified signal absorbs the reverberation through the reverberation absorbing circuit 3 and is applied to the microphone 4. The electrical signal applied to the microphone 4 is converted into a mechanical signal and emitted into the air as a sound wave.
【００１０】このとき音波が異常状態の発生及び障害物
に当たると、この状態および存在を検知して音波は反射
されることになり、その音波は再びマイクロホン４に戻
ってきて電気信号に変換される。この電気信号は受波信
号増幅器５により増幅され、その増幅された信号はさら
に波形整形回路６を介して波形整形され、制御部１に入
力されるのである。そして検知器スイッチ８がオン状態
にあると、電源回路７で安定した電源が作成され制御部
１に入力されて、検知器動作が開始することになる。す
なわち、本実施例では、マイクロホン４が超音波送波器
と超音波受波器とに兼用された検知器となっている。 At this time, if the sound wave hits an obstacle or an abnormal condition, the sound wave is reflected by detecting the condition and the presence of the sound, and the sound wave returns to the microphone 4 and is converted into an electric signal again. . This electric signal is amplified by the reception signal amplifier 5, and the amplified signal is further subjected to waveform shaping via the waveform shaping circuit 6 and input to the control unit 1. When the detector switch 8 is in the ON state, a stable power supply is generated by the power supply circuit 7 and input to the control unit 1 to start the detector operation. You
That is, in this embodiment, the microphone 4 is an ultrasonic transmitter.
This is a detector that is also used as an ultrasonic receiver.
【００１１】図２は本発明の車載用超音波検知器の動作
特性図であって、（イ）は制御部の一連の動作特性図、
（ロ）は検知器が正常に動作しているときの波形図、
（ハ）は検知器が例えば断線事故のような異常状態の発
生を検知したときの波形図、（ニ）は検知器が障害物の
存在を検知したときの波形図、（ホ）は検知器が雑音を
検知したときの波形図を示している。なお、雑音を検知
するときには、送波以降の処理動作は行われない。FIG. 2 is a diagram showing operating characteristics of the ultrasonic detector for vehicle use according to the present invention. FIG. 2A shows a series of operating characteristics of the control unit.
(B) Waveform diagram when the detector is operating normally,
(C) is a waveform diagram when the detector detects the occurrence of an abnormal state such as a disconnection accident, (d) is a waveform diagram when the detector detects the presence of an obstacle, and (e) is a detector. FIG. 5 shows a waveform diagram when noise is detected. When detecting noise, processing operations after transmission are not performed.
【００１２】図２において、送波信号期間ａ内に制御部
１から送波信号増幅器２に送波信号が出力され、検知器
異常チェックゲートｂの間に信号が現れない場合には、
制御部１により異常状態として判定して異常検知を行う
のである。そして検知ゲートｃの間に信号が現れた場合
には制御部１により障害物が近くに存在していることを
検知するのである。雑音監視ゲートｄの間に信号が現れ
た場合には、制御部１により検知器の周辺に雑音が多い
状態であると判定して、一連の処理を中断して誤動作す
ることを防止するのである。なお、Ａは一連の処理期間
を示しており、処理期間Ａ，Ａ1 と同様の処理期間Ａを
反復して繰り返すのである。要するに、超音波が間欠的
に繰り返し送波され、通常の処理動作では、各送波毎に
検知器異常チェックゲートｂ、検知ゲートｃ、雑音監視
ゲートｄが繰り返されるのである。また、制御部１は、
検知ゲートｃ内に検知器が超音波を受波したときに障害
物の存在を報知する障害物報知手段と、検知器異常チェ
ックゲートｂに検知器が超音波を受波しない状態が超音
波の複数回の送波に対して連続したときに検知器の異常
として報知する異常報知手段としても機能する。 In FIG. 2, when a transmission signal is output from the control unit 1 to the transmission signal amplifier 2 within the transmission signal period a and no signal appears between the detector abnormality check gates b,
The control unit 1 determines an abnormal state and performs abnormality detection. When a signal appears between the detection gates c, the control unit 1 detects that an obstacle is present nearby. When a signal appears between the noise monitoring gates d, the control unit 1 determines that there is a lot of noise around the detector and interrupts a series of processing to prevent malfunction. . Incidentally, A shows a series of processing period, processing period A, it is repeated by repeating the same processing period A and A 1. In short, ultrasound is intermittent
Is transmitted repeatedly in normal processing operation.
Detector abnormality check gate b, detection gate c, noise monitoring
Gate d is repeated. Also, the control unit 1
Obstruction when the detector receives ultrasonic waves in the detection gate c
Obstacle notifying means for notifying the presence of an object, and detector abnormality check
The state where the detector does not receive the ultrasonic wave at the lock gate b is the super sound
Detector malfunction when continuous for multiple transmissions of a wave
It also functions as abnormality notifying means for notifying as.
【００１３】次に、図２、図３を参照して動作について
説明する。検知器スイッチ８をオンとすると、制御部１
は異常状態の発生及び障害物の存在を検知して図３に示
す送波処理ａ2 、検知器異常チェックゲートｂ2 だけを
設けて通常処理よりも短時間で送波処理を繰り返す。誤
報防止のために複数回の同様の処理Ｂ，Ｂ1 を行った
後、通常の処理期間Ａ，Ａ1 に移行する。つまり、検知
器スイッチ８をオンにしてから一定期間は処理Ｂ，Ｂ 1
を繰り返す。 [0013] Next, as shown in FIG. 2, with reference to FIG. 3 describes the operation. When the detector switch 8 is turned on, the controller 1
Detects the occurrence of an abnormal state and the presence of an obstacle, and provides only the wave transmission process a 2 and the detector abnormality check gate b 2 shown in FIG . After several times of the same processing B, and B 1 for preventing an erroneous report, the normal processing period A, the process proceeds to A 1. In other words, detection
Process B, B 1 for a certain period after turning on the switch 8
repeat.
【００１４】上述の例では検知器異常チェックゲートｂ
および検知ゲートｃを設けて雑音監視ゲートｄを設けな
い処理Ｂ，Ｂ 1 を行う例を示したが、上述した一連の処
理期間Ａ，Ａ 1 ，……の動作を行いながらも検知器の異
常などの判定を行うようにしてもよい。つまり、検知器
スイッチ８をオンとすると、制御部１は一連の処理期間
Ａ，Ａ1 ，……の動作を行うのであるが、図４に示され
た或る一定期間Ｃにおいては、検知器異常チェックゲー
トｂの情報だけを取り入れて、一定期間Ｃの終了後に通
常の処理動作に復帰するのである。あるいはまた、一定
期間Ｃにおいて、検知ゲートｃまたは雑音監視ゲートｄ
で図２（ヘ）のように全期間にわたって「信号あり」
（検知器で超音波を受波している状態と等価な状態）と
読み取れたときに、検知器の発振異常と判定することに
よりその旨を報知する機能を制御部１に設けてもよい。 In the above example, the detector abnormality check gate b
And a detection gate c and no noise monitoring gate d.
There process B, and shows an example in which the B 1, a series of processing described above
During the operation in the control periods A, A 1 ,.
It may be determined to be always. That is, when to turn on the detector switch 8, the control unit 1 a series of processing periods A, A 1, but of performing the operation of ..., in certain period C shown in Figure 4, the detector Only the information of the abnormality check gate b is taken in, and after the fixed period C, the process returns to the normal processing operation. Alternatively, in one periodical between C, detection gate c or noise monitoring gates d
As shown in Fig. 2 (f), there is a "signal" over the entire period
The control unit 1 may be provided with a function of determining that the detector is abnormally oscillated when it is read as (a state equivalent to a state in which the detector is receiving ultrasonic waves) .
【００１５】さらにまた、一定期間Ｃにおいて、検知ゲ
ートｃまたは雑音監視ゲートｄで図２（ホ）の「β」の
ような信号が不規則に読み取れたときに、車両走行中と
判定して処理期間Ａ2 ，Ａ3 と続く一連の処理を中断
し、誤動作を防止する機能を制御部１に設けてもよい。 [0015] Furthermore, in one regular inter C, and when a signal such as "β" in FIG. 2 by the detection gate c or noise monitoring gate d (e) has read the erratically, it is determined that the vehicle is running The control unit 1 may be provided with a function of interrupting a series of processes following the processing periods A 2 and A 3 to prevent a malfunction .
【００１６】[0016]
【発明の効果】本発明の車載用超音波検知器は前記のよ
うに構成されているので、以下のような効果を奏する。
請求項１の発明では、電源投入後の一定期間において短
時間で異常状態のチェックを行うことにより障害物の存
在を監視する状態に迅速に移行することができ、また異
常情報だけが現れるから車両の走行中に電源を投入して
も誤動作することがない。 請求項２の発明では、異常情
報だけが現れるから車両の走行中に電源を投入しても誤
動作することがない。 Since the vehicle-mounted ultrasonic detector according to the present invention is configured as described above, the following effects can be obtained.
According to the first aspect of the present invention, it is possible to quickly shift to a state in which the presence of an obstacle is monitored by checking an abnormal state in a short period of time after turning on the power supply. There is no malfunction even if the power is turned on during running . According to the second aspect of the present invention,
Since only information appears, it is incorrect to turn on the power while the vehicle is running.
Will not work.
【図１】本発明の車載用超音波検知器の回路ブロック
図。FIG. 1 is a circuit block diagram of a vehicle-mounted ultrasonic detector according to the present invention.
【図２】本発明の車載用超音波検知器の動作特性図。 FIG. 2 is an operational characteristic diagram of the vehicle-mounted ultrasonic detector according to the present invention .
【図３】本発明の動作状態図。FIG. 3 is an operation state diagram of the present invention .
【図４】本発明の動作状態図。FIG. 4 is an operation state diagram of the present invention .
１ 制御部 ２ 送波信号増幅器 ３ 残響吸収回路 ４ マイクロホン ５ 受波信号増幅器 ６ 波形整形回路 ７ 検知器スイッチ ８ 電源回路 DESCRIPTION OF SYMBOLS 1 Control part 2 Transmission signal amplifier 3 Reverberation absorption circuit 4 Microphone 5 Received signal amplifier 6 Waveform shaping circuit 7 Detector switch 8 Power supply circuit
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−238383（ＪＰ，Ａ) 特開 昭61−51584（ＪＰ，Ａ) 特開 平４−250389（ＪＰ，Ａ) 特開 平４−250387（ＪＰ，Ａ) 特開 昭63−158483（ＪＰ，Ａ) 特開 平１−101488（ＪＰ，Ａ) 特開 平６−3437（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01S 7/52 G01S 15/00 - 15/95 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-238383 (JP, A) JP-A-61-51584 (JP, A) JP-A-4-250389 (JP, A) JP-A-4-250 250387 (JP, A) JP-A-63-158483 (JP, A) JP-A-1-101488 (JP, A) JP-A-6-3437 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G01S 7/52 G01S 15/00-15/95
Claims (4)
欠的に繰り返し送波する超音波送波器と、車両に搭載さ
れ少なくとも超音波送波器から送波した超音波の障害物
による反射波を受波可能な超音波受波器と、超音波送波
器からの超音波の送波後に設定した検知ゲート内に超音
波受波器が超音波を受波したときに障害物の存在を報知
する障害物報知手段と、超音波送波器からの超音波の送
波後に検知ゲートが設定されるよりも短い期間内に設定
した検知器異常チェックゲートに超音波受波器が超音波
を受波しない状態が超音波の複数回の送波に対して連続
したときに超音波送波器または超音波受波器の異常とし
て報知する異常報知手段と、電源投入後の一定期間は超
音波送波器からの超音波の送波の繰り返し間隔を常時よ
りも短くするとともに検知ゲートを設定せずに検知器異
常チェックゲートのみを設定して異常報知手段のみ動作
させる手段とを備えることを特徴とする車載用超音波検
知器。An ultrasonic wave is mounted around a vehicle and mounted around the vehicle.
An ultrasonic transmitter that intermittently transmits waves and a vehicle
Obstacles of ultrasonic waves transmitted from at least the ultrasonic transmitter
Ultrasonic receiver that can receive reflected waves from
After the ultrasonic wave is sent from the detector, the ultrasonic
Notifies the presence of obstacles when the wave receiver receives ultrasonic waves
For notifying obstacles to be transmitted and transmission of ultrasonic waves from the ultrasonic transmitter
Set within a shorter period than the detection gate is set after the wave
Ultrasonic wave receiver detects ultrasonic wave
Is not received continuously for multiple transmissions of ultrasonic waves
Of the ultrasonic transmitter or ultrasonic receiver
Error notification means to notify
Always keep the repetition interval of the ultrasonic wave transmission from the ultrasonic
Shorter and the detector gate is not set without setting the detection gate.
Always set only the check gate and operate only the abnormality notification means
And a means for causing the ultrasonic detector to be mounted on a vehicle.
欠的に繰り返し送波する超音波送波器と、車両に搭載さ
れ少なくとも超音波送波器から送波した超音波の障害物
による反射波を受波可能な超音波受波器と、超音波送波
器からの超音波の送波後に設定した検知ゲート内に超音
波受波器が超音波を受波したときに障害物の存在を報知
する障害物報知手段と、超音波送波器からの超音波の送
波後に検知ゲートが設定されるよりも短い期間内に設定
した検知器異常チェックゲートに超音波受波器が超音波
を受波しない状態が超音波の複数回の送波に対して連続
したときに超音波送波器または超音波受波器の異常とし
て報知する異常報知手段と、電源投入後の一定期間は異
常報知手段のみ動作させる手段とを備えることを特徴と
する車載用超音波検知器。2. An ultrasonic wave mounted on a vehicle and surrounding the vehicle.
An ultrasonic transmitter that intermittently transmits waves and a vehicle
Obstacles of ultrasonic waves transmitted from at least the ultrasonic transmitter
Ultrasonic receiver that can receive reflected waves from
After the ultrasonic wave is sent from the detector, the ultrasonic
Notifies the presence of obstacles when the wave receiver receives ultrasonic waves
For notifying obstacles to be transmitted and transmission of ultrasonic waves from the ultrasonic transmitter
Set within a shorter period than the detection gate is set after the wave
Ultrasonic wave receiver detects ultrasonic wave
Is not received continuously for multiple transmissions of ultrasonic waves
Of the ultrasonic transmitter or ultrasonic receiver
Is different from the abnormality notification means that
Means for operating only the normal notification means.
Ultrasonic detector for placing the car to be.
の送波までの間の期間に雑音監視ゲートを設定し、検知
ゲートと雑音監視ゲートとの少なくとも一方の全期間に
超音波を受波し続けている状態と等価な状態が生じると
き、送波器及び受波器の異常と判定する手段を備えるこ
とを特徴とする請求項２記載の車載用超音波検知器。3. The method according to claim 1, further comprising the step of:
Set a noise monitoring gate during the period until transmission
Gate and / or noise monitoring gate during the entire period
When a state equivalent to the state of continuously receiving ultrasonic waves occurs
Means for determining that the transmitter and receiver are abnormal
The vehicle-mounted ultrasonic detector according to claim 2, wherein:
の送波までの間の期 間に雑音監視ゲートを設定し、検知
ゲートと雑音監視ゲートとの少なくとも一方において超
音波を不規則に受波する状態と等価な状態が生じると
き、車両が走行中であると判定する手段を備えることを
特徴とする請求項２記載の車載用超音波検知器。 4. After the end of the detection gate, the next ultrasonic wave
Set the noise monitoring gate to the period between the previous transmit, detection
At least one of the gate and the noise monitoring gate
When a state equivalent to the state where the sound wave is received irregularly occurs
And means for determining that the vehicle is running.
Automotive ultrasonic detector according to claim 2, wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04288231A JP3140863B2 (en) | 1992-10-27 | 1992-10-27 | Automotive ultrasonic detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04288231A JP3140863B2 (en) | 1992-10-27 | 1992-10-27 | Automotive ultrasonic detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06138225A JPH06138225A (en) | 1994-05-20 |
| JP3140863B2 true JP3140863B2 (en) | 2001-03-05 |
Family
ID=17727538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04288231A Expired - Lifetime JP3140863B2 (en) | 1992-10-27 | 1992-10-27 | Automotive ultrasonic detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3140863B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101868569B1 (en) | 2015-12-03 | 2018-06-25 | (주)케이씨글로비즈 | Functional shoe with easy putting on and taking off |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004286762A (en) * | 2004-07-12 | 2004-10-14 | Matsushita Electric Ind Co Ltd | Flow rate measuring device |
| JP4346521B2 (en) | 2004-07-28 | 2009-10-21 | 株式会社デンソー | Obstacle detection device |
| JP6430778B2 (en) * | 2014-10-22 | 2018-11-28 | 株式会社デンソー | Object detection device |
| JP6442225B2 (en) | 2014-10-22 | 2018-12-19 | 株式会社デンソー | Object detection device |
| JP6484000B2 (en) | 2014-10-22 | 2019-03-13 | 株式会社デンソー | Object detection device |
| JP6462308B2 (en) | 2014-10-22 | 2019-01-30 | 株式会社デンソー | Object detection device |
| JP2016080641A (en) | 2014-10-22 | 2016-05-16 | 株式会社デンソー | Object detector |
| JP6404679B2 (en) | 2014-10-22 | 2018-10-10 | 株式会社デンソー | Object detection device |
| JP6430777B2 (en) | 2014-10-22 | 2018-11-28 | 株式会社デンソー | Object detection device |
| JP6474228B2 (en) | 2014-10-22 | 2019-02-27 | 株式会社デンソー | Object detection device |
-
1992
- 1992-10-27 JP JP04288231A patent/JP3140863B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101868569B1 (en) | 2015-12-03 | 2018-06-25 | (주)케이씨글로비즈 | Functional shoe with easy putting on and taking off |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06138225A (en) | 1994-05-20 |
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