JPH028926B2 - - Google Patents
Info
- Publication number
- JPH028926B2 JPH028926B2 JP55123977A JP12397780A JPH028926B2 JP H028926 B2 JPH028926 B2 JP H028926B2 JP 55123977 A JP55123977 A JP 55123977A JP 12397780 A JP12397780 A JP 12397780A JP H028926 B2 JPH028926 B2 JP H028926B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- switch
- operated
- output
- gate
- 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
Links
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000006870 function Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/06—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure
- B60K31/10—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means
- B60K31/102—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator
- B60K31/105—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of a pressure which is fed into the controlling means where at least one electrical quantity is set by the vehicle operator in a memory, e.g. a capacitor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0605—Throttle position
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Controls For Constant Speed Travelling (AREA)
Description
【発明の詳細な説明】 本発明は自動車用の定速走行装置に関する。[Detailed description of the invention] The present invention relates to a constant speed traveling device for a motor vehicle.
セツトスイツチを操作した際の自動車の走行車
速を記憶しておき、それ以降の車速変化をその記
憶した車速（維持車速）と比較してスロツトル弁
開度を自動的に調整することにより、運転者がア
クセルペダルを踏まなくても走行車速を所望の
値、即ち上述の場合維持車速に保つようにした定
速走行装置は周知である。この種の定速走行装置
に、インクリーススイツチを設け、そのインクリ
ーススイツチの操作時間に応じて維持車速を連続
的に増大させることのできる連続増速機能を設け
た場合、もしそのインクリーススイツチが操作状
態のままで故障してしまうと維持車速が無制限に
増大してしまう。このような場合、ブレーキペダ
ル等を踏み込んでキヤンセルスイツチを作動させ
れば定速走行制御を停止させることができるが、
この状態で再びセツトスイツチを誤つて操作する
と、この直前まで維持車速が高速に設定されてい
るため、操作した瞬間車速が急激にその高い値に
制御され、非常に危険である。 By memorizing the vehicle speed at which the vehicle was operating the set switch and automatically adjusting the throttle valve opening by comparing subsequent changes in vehicle speed with the memorized vehicle speed (maintenance vehicle speed), the driver A constant-speed traveling system is well known that maintains the traveling vehicle speed at a desired value, that is, the maintained vehicle speed in the case described above, even without pressing the accelerator pedal. If this type of constant speed traveling device is equipped with an increase switch and a continuous speed increase function that can continuously increase the maintained vehicle speed according to the operating time of the increase switch, if the increase switch is If the system fails while the system is still in operation, the maintained vehicle speed will increase indefinitely. In such a case, constant speed driving control can be stopped by depressing the brake pedal etc. and activating the cancel switch.
If the set switch is operated by mistake again in this state, the vehicle speed will be suddenly controlled to that high value at the moment of operation, which is extremely dangerous, since the maintained vehicle speed has been set at a high speed until just before the switch is operated.
従つて、本発明は従来技術の上述の問題を解決
することを目的としている。本発明によれば、イ
ンクリーススイツチが故障等によつて操作状態の
ままとなつてしまつた場合には、セツトスイツチ
を再び操作しても定速走行制御を開始できないよ
うにしたフエールセーフ機能を有する定速走行装
置を提供できる。 The present invention therefore aims to solve the above-mentioned problems of the prior art. According to the present invention, if the increase switch remains in the operating state due to a malfunction or the like, it has a fail-safe function that prevents constant speed cruise control from being started even if the set switch is operated again. A constant speed traveling device can be provided.
上記の目的を達成する本発明の特徴とするとこ
ろは、インクリーススイツチが操作状態にある場
合はセツトスイツチを操作しても自己保持回路が
作動状態とならないようにする禁止手段を設けた
ことになる。 A feature of the present invention that achieves the above object is that, when the increase switch is in the operating state, a prohibition means is provided to prevent the self-holding circuit from becoming activated even if the set switch is operated. .
以下図面を用いて本発明を詳細に説明する。 The present invention will be explained in detail below using the drawings.
図は本発明の一実施例のブロツク図である。同
図において、１０は自動車の走行車速検出用のリ
ードスイツチであり、１２はスピードメータケー
ブルによつて回転駆動せしめられる永久磁石であ
る。リードスイツチ１０は車速を検知し該検知し
た車速を表わす信号を発生する手段であり、永久
磁石１２の回転に伴つてオン・オフ動作を行い、
斯くして車速に比例した周波数を有するパルス信
号を発生する。このパルス信号は、周波数−電圧
変換回路（Ｆ／Ｖ変換回路）１４において、車速
に比例したレベルを有する直流電圧に変換され
る。Ｆ／Ｖ変換回路１４の出力電圧は、アナログ
スイツチ１６がオンの場合に維持車速の設定を行
う手段である記憶回路１８に送り込まれ、そのア
ナログスイツチ１６がオフとなる直前の値が維持
車速に対応する設定電圧として記憶回路１８に保
持される。この記憶回路１８は通常、コンデンサ
によつて構成され、このコンデンサに保持される
設定電圧は、車速信号と設定された維持車速を表
わす信号との大小を比較する手段である比較回路
２０において、Ｆ／Ｖ変換回路１４の出力電圧、
即ち、走行車速に対応した車速対応電圧と比較さ
れる。この比較結果が、オアゲート２２、アンド
ゲート２４、及び駆動回路２６を介して比較手段
の出力に応じてスロツトル弁を開方向もしくは閉
方向に付勢し車速が前記維持車速に一致するよう
に制御する手段であるアクチユエータ２８に送り
込まれることにより、そのアクチユエータ２８の
制御弁２８ａが駆動される。 The figure is a block diagram of one embodiment of the present invention. In the figure, 10 is a reed switch for detecting the speed of an automobile, and 12 is a permanent magnet rotated by a speedometer cable. The reed switch 10 is a means for detecting the vehicle speed and generating a signal representing the detected vehicle speed, and performs an on/off operation as the permanent magnet 12 rotates.
In this way, a pulse signal having a frequency proportional to the vehicle speed is generated. This pulse signal is converted into a DC voltage having a level proportional to the vehicle speed in a frequency-voltage conversion circuit (F/V conversion circuit) 14. The output voltage of the F/V conversion circuit 14 is sent to a memory circuit 18 which is a means for setting the maintained vehicle speed when the analog switch 16 is on, and the value immediately before the analog switch 16 is turned off is set as the maintained vehicle speed. It is held in the memory circuit 18 as a corresponding set voltage. This memory circuit 18 is usually constituted by a capacitor, and the set voltage held in this capacitor is F in a comparison circuit 20 which is means for comparing the magnitude of the vehicle speed signal and a signal representing the set maintenance vehicle speed. /V conversion circuit 14 output voltage,
That is, it is compared with a vehicle speed corresponding voltage corresponding to the traveling vehicle speed. This comparison result biases the throttle valve in the opening or closing direction via the OR gate 22, AND gate 24, and drive circuit 26 according to the output of the comparison means, and controls the vehicle speed so that it matches the maintained vehicle speed. The control valve 28a of the actuator 28 is driven by being fed into the actuator 28, which is a means.
比較回路２０は、設定電圧より車速対応電圧の
方が高い場合は制御弁２８ａへの通電時間が短か
くなり、その逆の場合は通電時間が長くなるよう
にデユーテイ比制御された“１”、“０”のパルス
の出力を発生する。オアゲート２２には、この比
較回路２０の出力の他に第２の指示スイツチであ
るインクリーススイツチ３０の出力がインバータ
３２において反転されて印加される。インクリー
ススイツチ３０は、運転者によつて操作された際
に論理“０”のレベルの出力を発生し、離した際
に論理“１”の出力を発生する。従つてインクリ
ーススイツチ３０を操作すると、オアゲート２２
には論理“１”の出力が送り込まれる。 The comparator circuit 20 has a duty ratio of "1" which is controlled such that when the vehicle speed corresponding voltage is higher than the set voltage, the energization time to the control valve 28a is shortened, and in the opposite case, the energization time is longer. Generates a “0” pulse output. In addition to the output of the comparator circuit 20, the output of an increase switch 30, which is a second instruction switch, is inverted and applied to the OR gate 22 by an inverter 32. The increase switch 30 produces an output at a logic "0" level when operated by the driver, and produces an output at a logic "1" level when released. Therefore, when the increase switch 30 is operated, the or gate 22
A logic "1" output is sent to the output.
アンドゲート２４は自己保持回路３４の出力が
“１”のレベルの間のみ開成し、オアゲート２２
からの出力を駆動回路２６に伝える。 The AND gate 24 is opened only while the output of the self-holding circuit 34 is at the "1" level, and the OR gate 22
The output from the drive circuit 26 is transmitted to the drive circuit 26.
アクチユエータ２８は、制御弁２８ａと解除弁
２８ｂとを備えている。制御弁２８ａは駆動回路
２６及びアンドゲート２４を介するオアゲート２
２の出力により開閉制御される。即ち、通電され
るとポート２８ｃからの大気圧をしや断してポー
ト２８ｂからの吸気管負圧を室２８ｅに導入し、
通電が断たれるとポート２８ｄからの負圧をしや
断してポート２８ｃから大気圧を室２８ｅに導入
する。解除弁２８ｂは駆動回路３６を介する自己
保持回路３４の出力により開閉制御される。即
ち、通電されるとポート２８ｆからの大気圧をし
や断し、通電が断たれるとこの大気圧を室２８ｅ
に導入する。上述の如く、室２８ｅ内の圧力が制
御されることにより、ダイアフラム２８ｇが移動
し、これにより、図示しないアクセルレータ・リ
ンクに連結されるロツド２８ｈがその軸方向に移
動せしめられ、その結果スロツトル弁の開度が制
御される。 The actuator 28 includes a control valve 28a and a release valve 28b. The control valve 28a is connected to the OR gate 2 via the drive circuit 26 and the AND gate 24.
The opening/closing is controlled by the output of 2. That is, when energized, the atmospheric pressure from the port 28c is cut off, and the intake pipe negative pressure from the port 28b is introduced into the chamber 28e.
When the current supply is cut off, the negative pressure from the port 28d is suddenly cut off, and atmospheric pressure is introduced into the chamber 28e from the port 28c. The release valve 28b is controlled to open and close by the output of the self-holding circuit 34 via the drive circuit 36. That is, when energized, the atmospheric pressure from port 28f is cut off, and when energized, this atmospheric pressure is transferred to chamber 28e.
to be introduced. As described above, by controlling the pressure within the chamber 28e, the diaphragm 28g moves, which causes the rod 28h connected to the accelerator link (not shown) to move in its axial direction, and as a result, the throttle valve The opening degree is controlled.
第１の指示スイツチであるセツトスイツチ３８
は、インクリーススイツチ３０と同様に、運転者
によつて操作された際に論理“０”のレベルの出
力を発生し、離した際に論理“１”の出力を発生
する。このセツトスイツチ３８の出力はインバー
タ４０を介してオアゲート４２及びアンドゲート
４３に印加される。また、このオアゲート４２に
はインクリーススイツチ３０の出力がインバータ
３２を介して印加される。オアゲート４２の出力
はアナログスイツチ１６に印加される。従つてア
ナログスイツチ１６は、セツトスイツチ３８もし
くはインクリーススイツチ３０が操作されるとオ
ンとなり、操作が終了するとオフとなる。 Set switch 38 which is the first instruction switch
Similar to the increase switch 30, the switch generates a logic "0" level output when operated by the driver, and produces a logic "1" level output when released. The output of the set switch 38 is applied to an OR gate 42 and an AND gate 43 via an inverter 40. Further, the output of the increase switch 30 is applied to the OR gate 42 via the inverter 32. The output of OR gate 42 is applied to analog switch 16. Therefore, the analog switch 16 is turned on when the set switch 38 or increase switch 30 is operated, and is turned off when the operation is completed.
オアゲート４３には、さらに、インクリースス
イツチ３０の出力がインバータ３２及び３３を介
して印加され、そのアンドゲート４３の出力は自
己保持回路３４に印加される。従つてこの自己保
持回路３４は、インクリーススイツチ３０の出力
が論理“１”のレベルの時、即ち、インクリース
スイツチ３０が操作状態にない時、セツトスイツ
チ３８が操作されることによつてセツトされ、そ
の他の場合にはセツトされない。 The output of the increase switch 30 is further applied to the OR gate 43 via inverters 32 and 33, and the output of the AND gate 43 is applied to the self-holding circuit 34. Therefore, this self-holding circuit 34 is set by operating the set switch 38 when the output of the increase switch 30 is at the logic "1" level, that is, when the increase switch 30 is not in the operating state. , otherwise it is not set.
以上のように、この実施例では自己保持回路３
４が第１の指示スイツチが操作されると作動状態
となつて車速制御の実行を許可し、後述する第３
の指示スイツチが操作されると非作動状態となつ
て車速制御を停止せしめる車速制御手段に相当
し、アンドゲート４３が前記第２の指示スイツチ
（インクリーススイツチ３０）が操作状態にある
場合は、前記第１の指示スイツチ（セツトスイツ
チ３８）を操作しても自己保持回路３４が作動状
態とならないようにする禁止手段に相当する。 As described above, in this embodiment, the self-holding circuit 3
4 is activated when the first instruction switch is operated and permits execution of vehicle speed control, and the third instruction switch described later is activated.
When the second instruction switch (increase switch 30) is operated, the AND gate 43 corresponds to a vehicle speed control means that becomes inactive and stops vehicle speed control, and when the second instruction switch (increase switch 30) is operated, This corresponds to prohibition means for preventing the self-holding circuit 34 from being activated even if the first instruction switch (set switch 38) is operated.
自己保持回路３４は、例えばフリツプフロツプ
から成つており、上述の如く、セツト操作が行わ
れたことを自己保持し、その間、解除弁２８ｂを
付勢し、またアンドゲート２４を開く機能と、第
３の指示スイツチとして、ブレーキペダルを踏ん
だ際にオンとなるストツプランプスイツチ４４、
パーキングブレーキを作動させた時オンとなるパ
ーキングブレーキスイツチ４６、クラツチを踏ん
だ際もしくはオートマチツク変速機のシフト位置
がニユートラルになつた際オンとなるクラツチス
イツチもしくはニユートラルスタートスイツチ４
８のうちのいずれかがオンとなつた場合にリセツ
トされ、解除弁２８ｂを消勢し、また、アンドゲ
ート２４を閉じる機能とを有している。 The self-holding circuit 34 is composed of, for example, a flip-flop, and has the functions of self-maintaining that the set operation has been performed as described above, energizing the release valve 28b, opening the AND gate 24, and the third function. A stop lamp switch 44, which is turned on when the brake pedal is pressed, serves as an instruction switch for
A parking brake switch 46 that is turned on when the parking brake is activated, and a clutch switch or neutral start switch 4 that is turned on when the clutch is depressed or when the shift position of the automatic transmission becomes neutral.
8 is turned on, it has the function of deenergizing the release valve 28b and closing the AND gate 24.
次に本実施例の動作を説明する。 Next, the operation of this embodiment will be explained.
セツトスイツチ３８を押圧（操作）すると、自
己保持回路３４がセツトされ解除弁２８ｂが通電
されて大気導入ポート２８ｆが閉じられる。同時
にアナログスイツチ１６がオンとなり、車速対応
電圧が記憶回路１８に印加される。セツトスイツ
チ３８を離すと、アナログスイツチ１６はオフと
なるが、そのオフとなる直前の車速対応電圧が記
憶回路１８に設定電圧として記憶される。自己保
持回路３４がセツトされているためアンドゲート
２４が開くから、以後、アクチユエータ２８の制
御弁２８ａは比較回路２０の出力により制御さ
れ、これにより、走行車速が維持車速に等しくな
るようにスロツトル弁の開度が自動的に制御され
て定速走行制御が達成される。 When the set switch 38 is pressed (operated), the self-holding circuit 34 is set, the release valve 28b is energized, and the atmosphere introduction port 28f is closed. At the same time, the analog switch 16 is turned on, and a voltage corresponding to the vehicle speed is applied to the memory circuit 18. When the set switch 38 is released, the analog switch 16 is turned off, and the voltage corresponding to the vehicle speed immediately before the analog switch 16 is turned off is stored in the storage circuit 18 as the set voltage. Since the self-holding circuit 34 is set and the AND gate 24 is opened, the control valve 28a of the actuator 28 is thereafter controlled by the output of the comparator circuit 20, and thereby the throttle valve is adjusted so that the traveling vehicle speed becomes equal to the maintained vehicle speed. The opening degree is automatically controlled to achieve constant speed running control.
定速走行制御が行なわれている間にインクリー
ススイツチ３０を押圧すると、アナログスイツチ
１６がオンとなり、車速対応電圧が記憶回路１８
に送り込まれる。さらにこの場合、オアゲート２
２を介して論理“１”の出力が駆動回路２６に印
加される。このため、制御弁２８ａは、インクリ
ーススイツチ３０を押圧している間通電されたま
まとなり、その結果、このアクチユエータ２８の
ロツド２８ｈが矢印５０方向に移動し、スロツト
ル弁が開方向に駆動されて、車速が連続的に増速
せしめられる。インクリーススイツチ３０を離す
と、アナログスイツチ１６がオフとなり、そのオ
フとなる直前の車速対応電圧が設定電圧として記
憶回路１８に記憶せしめられ、以後この設定電圧
により定車速制御が行われる。 When the increase switch 30 is pressed while constant speed driving control is being performed, the analog switch 16 is turned on and the voltage corresponding to the vehicle speed is stored in the memory circuit 18.
sent to. Furthermore, in this case, or gate 2
A logic "1" output is applied to the drive circuit 26 via the input terminal 2. Therefore, the control valve 28a remains energized while the increase switch 30 is pressed, and as a result, the rod 28h of the actuator 28 moves in the direction of the arrow 50, and the throttle valve is driven in the opening direction. , the vehicle speed is continuously increased. When the increase switch 30 is released, the analog switch 16 is turned off, and the voltage corresponding to the vehicle speed immediately before turning off is stored in the storage circuit 18 as a set voltage, and thereafter constant vehicle speed control is performed using this set voltage.
故障、短絡等により、インクリーススイツチ３
０が操作状態にロツクされてしまつた場合、運転
者がブレーキペダル、クラツチペダル等を踏んで
ストツプランプスイツチ４４、パーキングブレー
キブレーキスイツチ４６、クラツチスイツチ４８
等をオンとすれば、自己保持回路３４がリセツト
されるため、定速走行制御が停止して通常の運転
状態に戻る。そしてこの場合、アンドゲート４３
が閉じていることから、セツトスイツチ３８を操
作しても自己保持回路３４はセツトされない。さ
らに、インクリーススイツチ３４が操作状態にあ
る場合、アナログスイツチ１６がオンとなつてい
るから、記憶回路１８に記憶されている設定電圧
がその時の車速に追従して常時変化し、維持車速
の設定をインクリーススイツチが非操作状態に回
復するまで禁止させることができる。 Increase switch 3 due to failure, short circuit, etc.
0 is locked in the operating state, the driver depresses the brake pedal, clutch pedal, etc. to release the stop lamp switch 44, parking brake brake switch 46, and clutch switch 48.
When the self-holding circuit 34 is turned on, the constant speed running control is stopped and the normal driving state is returned. And in this case, and gate 43
Since the self-holding circuit 34 is closed, the self-holding circuit 34 is not set even if the set switch 38 is operated. Further, when the increase switch 34 is in the operating state, the analog switch 16 is turned on, so the set voltage stored in the memory circuit 18 constantly changes to follow the vehicle speed at that time, and the maintained vehicle speed is set. can be inhibited until the increase switch returns to its non-operating state.
以上詳細に説明したように、本発明によれば、
インクリーススイツチが操作状態にある場合はセ
ツトスイツチを操作しても自己保持回路が作動状
態とならないようにする禁止手段が設けられてい
るため、インクリーススイツチが故障、短絡等に
よつて操作状態にロツクされてしまつた場合に一
度自己保持回路をリセツトすれば、セツトスイツ
チを誤つて操作しても自己保持回路はセツトされ
ず定速走行制御が開始されることはない。従つて
非常に有効なフエールセーフ機能を得ることがで
きる。 As explained in detail above, according to the present invention,
When the increase switch is in the operating state, there is a prohibition means that prevents the self-holding circuit from becoming activated even if the set switch is operated. If the self-holding circuit is reset once the vehicle is locked, even if the set switch is operated by mistake, the self-holding circuit will not be set and constant speed running control will not be started. Therefore, a very effective fail-safe function can be obtained.
図は本発明の一実施例のブロツク図である。
１０……リードスイツチ、１２……永久磁石、
１４……Ｆ／Ｖ変換回路、１６……アナログスイ
ツチ、１８……記憶回路、２０……比較回路、２
２，４２……オアゲート、２４，４３………アン
ドゲート、２６，３６……駆動回路、２８……ア
クチユエータ、２８ａ……制御弁、２８ｂ……解
除弁、３０……インクリーススイツチ、３４……
自己保持回路、３８……セツトスイツチ。
The figure is a block diagram of one embodiment of the present invention. 10...Reed switch, 12...Permanent magnet,
14...F/V conversion circuit, 16...analog switch, 18...memory circuit, 20...comparison circuit, 2
2, 42... OR gate, 24, 43...... AND gate, 26, 36... Drive circuit, 28... Actuator, 28a... Control valve, 28b... Release valve, 30... Increase switch, 34... …
Self-holding circuit, 38...Set switch.
Claims (1)
発生する手段と、 該車速信号と設定された維持車速を表わす信号
との大小を比較する手段と、 該比較手段の出力に応じてスロツトル弁を開方
向もしくは閉方向に付勢し車速が前記維持車速に
一致するように制御する手段と、 第１の指示スイツチと、 該第１の指示スイツチが操作されている間前記
維持車速の設定を行う手段と、 第２の指示スイツチと、 該第２の指示スイツチが操作されている間前記
維持車速の設定を行うと共にその間前記スロツト
ル弁を開方向に継続的に付勢する手段と、 第３の指示スイツチと、 前記第１の指示スイツチが操作されると作動状
態となつて前記車速制御の実行を許可し、前記第
３の指示スイツチが操作されると非作動状態とな
つて車速制御を停止せしめる車速制御手段と、 前記第２の指示スイツチが操作状態にある場合
は、前記第１の指示スイツチを操作しても前記車
速制御手段が作動状態とならないようにする禁止
手段と、 を備えたことを特徴とする定速走行装置。[Claims] 1. Means for detecting vehicle speed and generating a signal representing the detected vehicle speed; Means for comparing the magnitude of the vehicle speed signal with a signal representing a set maintenance vehicle speed; and an output of the comparing means. means for biasing the throttle valve in the opening direction or the closing direction in response to the vehicle speed so that the vehicle speed matches the maintenance vehicle speed; a first indicating switch; means for setting a maintained vehicle speed; a second indicating switch; while the second indicating switch is operated, the maintaining vehicle speed is set and the throttle valve is continuously biased in the opening direction during that time; means; a third instruction switch; when the first instruction switch is operated, the switch is activated to permit execution of the vehicle speed control; when the third instruction switch is operated, the switch is activated; and when the third instruction switch is operated, the switch is activated; a vehicle speed control means for stopping the vehicle speed control when the vehicle speed control is stopped; and a prohibition for preventing the vehicle speed control means from being activated even if the first instruction switch is operated when the second instruction switch is in the operating state. A constant speed traveling device characterized by comprising means and.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12397780A JPS5752916A (en) | 1980-09-09 | 1980-09-09 | Constant-speed running device |
| US06/294,155 US4470478A (en) | 1980-09-09 | 1981-08-19 | Vehicle speed control apparatus with set increase |
| US06/605,666 US4606425A (en) | 1980-09-09 | 1984-04-30 | Vehicle speed control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12397780A JPS5752916A (en) | 1980-09-09 | 1980-09-09 | Constant-speed running device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5752916A JPS5752916A (en) | 1982-03-29 |
| JPH028926B2 true JPH028926B2 (en) | 1990-02-27 |
Family
ID=14873984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12397780A Granted JPS5752916A (en) | 1980-09-09 | 1980-09-09 | Constant-speed running device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5752916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9040159B2 (en) | 2007-12-12 | 2015-05-26 | Tsinghua University | Electronic element having carbon nanotubes |
| US9077793B2 (en) | 2009-06-12 | 2015-07-07 | Tsinghua University | Carbon nanotube based flexible mobile phone |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128435A (en) * | 1982-01-25 | 1983-08-01 | Toyota Motor Corp | Method of controlling speed of vehicle |
| GB2162341B (en) * | 1984-07-27 | 1988-02-03 | Ae Plc | Automatic vehicle speed control system |
| JPS62157830A (en) * | 1985-12-28 | 1987-07-13 | Aisin Seiki Co Ltd | Constant speed travel device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238195A (en) * | 1975-09-20 | 1977-03-24 | Matsushita Electric Works Ltd | Wiring duct |
| US4138723A (en) * | 1977-08-12 | 1979-02-06 | General Motors Corporation | Motor vehicle speed control system |
| JPS5488525A (en) * | 1977-12-12 | 1979-07-13 | Vdo Schindling | Speed controller for automobile |
| JPS56101037A (en) * | 1980-01-18 | 1981-08-13 | Nissan Motor Co Ltd | System for operating vehicle at constant speed |
-
1980
- 1980-09-09 JP JP12397780A patent/JPS5752916A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238195A (en) * | 1975-09-20 | 1977-03-24 | Matsushita Electric Works Ltd | Wiring duct |
| US4138723A (en) * | 1977-08-12 | 1979-02-06 | General Motors Corporation | Motor vehicle speed control system |
| JPS5488525A (en) * | 1977-12-12 | 1979-07-13 | Vdo Schindling | Speed controller for automobile |
| JPS56101037A (en) * | 1980-01-18 | 1981-08-13 | Nissan Motor Co Ltd | System for operating vehicle at constant speed |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9040159B2 (en) | 2007-12-12 | 2015-05-26 | Tsinghua University | Electronic element having carbon nanotubes |
| US9077793B2 (en) | 2009-06-12 | 2015-07-07 | Tsinghua University | Carbon nanotube based flexible mobile phone |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5752916A (en) | 1982-03-29 |
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