JPS62241756A - Speed diagnostic processing system for antiskid device - Google Patents

Speed diagnostic processing system for antiskid device

Info

Publication number
JPS62241756A
JPS62241756A JP8308686A JP8308686A JPS62241756A JP S62241756 A JPS62241756 A JP S62241756A JP 8308686 A JP8308686 A JP 8308686A JP 8308686 A JP8308686 A JP 8308686A JP S62241756 A JPS62241756 A JP S62241756A
Authority
JP
Japan
Prior art keywords
speed
wheel
speed difference
wheel speed
trouble
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.)
Pending
Application number
JP8308686A
Other languages
Japanese (ja)
Inventor
Akira Hoashi
帆足　章
Hideo Akima
秋間　秀夫
Isao Yamaki
功 八巻
Yuji Matsubara
裕二 松原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akebono Brake Industry Co Ltd
Fujitsu Ltd
Original Assignee
Akebono Brake Industry Co Ltd
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Akebono Brake Industry Co Ltd, Fujitsu Ltd filed Critical Akebono Brake Industry Co Ltd
Priority to JP8308686A priority Critical patent/JPS62241756A/en
Publication of JPS62241756A publication Critical patent/JPS62241756A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/416—Wheel speed sensor failure

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE:To perform a certain diagnosis of trouble, by calculating a speed difference in each wheel, and discriminating such one that is larger in this speed difference than the specified value as the trouble one, while discriminating any of sensor systems being gets out of order on the basis of the combination discriminated as the trouble. CONSTITUTION:Wheel speed sensors 1-1-1-N detects each revolving speed of axles A1-AN as a period of each pulse signal. And, pulse period counting circuits 2-1-2-N measures each speed of wheels W1-WN from these pulse signals. In addition, a wheel speed difference calculating device 3 calculates each speed difference in these wheels W1-WN. And, a trouble discriminating device 4 discriminates such one that is more than the specified value in the calculated wheel speed difference, while it discriminates that the speed measured by any of these pulse period counting circuits 2-1-2-N is trouble from the combination of those troubled ones discriminated. With this constitution, a fact that any of sensor systems gets out of order is diagnosed.

Description

【発明の詳細な説明】 〔概要〕 各重輪の速度を計測してこれらの間の速度差を夫々算出
し、この算出した夫々の速度差から異常な車輪速センサ
を検出して診断している。[Detailed Description of the Invention] [Summary] The speed of each heavy wheel is measured, the speed difference between them is calculated, and an abnormal wheel speed sensor is detected and diagnosed from the calculated speed difference. There is.

〔産業上の利用分野〕[Industrial application field]

本発明は、アンチスキッド装置の制御を行う際に、車輪
速センサの異常を診断するアンチスキッド装置の車速診
断処理方式に関するものである。The present invention relates to a vehicle speed diagnostic processing method for an anti-skid device that diagnoses an abnormality in a wheel speed sensor when controlling the anti-skid device.

〔従来の技術〕[Conventional technology]

従来、車輪の回転速度に対応した周期のパルス（３号を
発生させ、この発生させたパルス信号の周期を計数して
速度を測定することが行われている。Conventionally, the speed has been measured by generating a pulse (No. 3) with a period corresponding to the rotational speed of the wheel and counting the period of the generated pulse signal.

この車輪の速度を測定するセンサシステムの異常を検出
する方式として、自動車の４車輪の各車輪速度を夫々測
定し、この測定した車輪速度のうち最大の速度あるいは
第２番目の速度と、最小の速度との差を算出し、この差
が所定値以上ある場合に、センサ異常として診断してい
た。As a method for detecting abnormalities in the sensor system that measures wheel speeds, the speeds of each of the four wheels of a car are measured individually, and the maximum or second speed of the measured wheel speeds and the minimum speed are measured. The difference from the speed was calculated, and if this difference was greater than a predetermined value, it was diagnosed as a sensor abnormality.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

このように、従来は、測定した各車輪の速度差の最大の
ものあるいは第２番目のものと、最小のものとなどの如
く、特定の速度のものとのみ比較し、これらの速度差を
算出してセンサシステムの異常診断を行っていたため、
いずれの車輪に取り付けたセンサが異常であるかを判別
し難いという問題があった。In this way, in the past, the speed differences between the wheels were compared only with specific speeds, such as the largest or second speed difference and the smallest speed difference, and these speed differences were calculated. Because we were diagnosing abnormalities in the sensor system,
There was a problem in that it was difficult to determine which of the wheels had an abnormal sensor attached to it.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、前記問題点を解決するために、各車輪の速度
を計測してこれらの間の速度差を夫々算出し、この算出
した夫々の速度差が所定値よりも大きいものを異常とし
て判別すると共に、この異常と判別された組み合わせに
基づいていずれの車輪に取り付けたセンサンステムが異
常であるかを判別する構成を採用することにより、セン
サシステムの異常およびいずれのセンサシステムが異常
であるかを診断するようにしている。In order to solve the above-mentioned problems, the present invention measures the speed of each wheel, calculates the speed difference between them, and determines as abnormal if the calculated speed difference is larger than a predetermined value. At the same time, by adopting a configuration that determines which sensor stem attached to the wheel is abnormal based on the combination determined to be abnormal, it is possible to determine whether the sensor system is abnormal or which sensor system is abnormal. I am trying to diagnose.

第１図に示す本発明の１実施例構成図を用いて問題点を
解決するための手段を説明する。Means for solving the problems will be explained using the configuration diagram of one embodiment of the present invention shown in FIG.

第１図において、車輪速センサｌ−１ないしｌ−Ｎは、
車軸Ａ＋ないしＡ工の回転速度を、パルス信号の周期と
して検出するものである。In FIG. 1, wheel speed sensors l-1 to l-N are
The rotational speed of the axle A+ or A is detected as the period of the pulse signal.

パルス周期計数回路２−１ないし２−Ｎは、車輪速セン
サ１−１ないしｌ−Ｎによって検出されたパルス１３号
の周期から、車軸ＷＩないしＷＮの速度を測定するもの
である。The pulse period counting circuits 2-1 to 2-N measure the speeds of the axles WI to WN based on the period of pulse No. 13 detected by the wheel speed sensors 1-1 to 1-N.

車輪速度差算出手段３は、パルス周期計数回路２−１な
いし２−Ｎによって測定された各車輪の速度の差を夫々
算出するものである。The wheel speed difference calculating means 3 calculates the difference in speed of each wheel measured by the pulse period counting circuits 2-1 to 2-N.

異常判別手段４は、車輪速度差算出手段３によって算出
された各車輪の速度差が所定値以上のものを異常のもの
として判別すると共に、この判別された異常のものの組
み合わせからいずれのパルス周期計数回路２−１ないし
２−Ｎによって測定された速度が異常（故障）であるか
を判別するものである。The abnormality determining means 4 determines as abnormal when the speed difference of each wheel calculated by the wheel speed difference calculating means 3 is more than a predetermined value, and determines which pulse period count from the combination of the determined abnormalities. It is determined whether the speed measured by the circuits 2-1 to 2-N is abnormal (failure).

制御部５は、各種制御を実行するものである。The control unit 5 executes various controls.

〔作用〕[Effect]

第１図を用いて説明した構成を採用し、車輪速センサ１
−１ないし１−Ｎによって発生させたパルス信号の周期
を、パルス周期計数回路２−１ないし２−Ｎを用いて測
定して速度を算出する。この算出した速度は、逐次、制
御部５を介して車輪速度差算出手段３に通知され、各車
輪の速度差が夫々算出される。この算出された速度差は
、異常判別手段４に通知され、速度差が所定値以上のも
のを異常のものとして判別した後、この異常の速度差の
ものの組み合わせからいずれのパルス周期計数回路２−
１ないし２−Ｈによって測定された速度が異常であるか
が判別される。The configuration explained using FIG. 1 is adopted, and the wheel speed sensor 1
The speed is calculated by measuring the period of the pulse signal generated by -1 to 1-N using pulse period counting circuits 2-1 to 2-N. This calculated speed is sequentially notified to the wheel speed difference calculation means 3 via the control unit 5, and the speed difference of each wheel is calculated. This calculated speed difference is notified to the abnormality determining means 4, and after determining a speed difference greater than a predetermined value as abnormal, which pulse period counting circuit 2-
1 to 2-H, it is determined whether the measured speed is abnormal.

以上説明したように、各車輪速度の差を夫々算出し、こ
の算出した速度差が所定値以上のものの組み合わせから
異常（故障）のセンサシステムを診断することができる
。As explained above, the difference between the respective wheel speeds is calculated, and an abnormal (failure) sensor system can be diagnosed from the combination of the calculated speed differences being greater than or equal to a predetermined value.

〔実施例〕〔Example〕

第１図は本発明の１実施例構成図、第２図は本発明の詳
細な説明するフローチャートを示す。FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a flowchart for explaining the present invention in detail.

第１図において、既述したように、車軸ＡＩないしＡＮ
の回転速度は、車輪速センサ１−１ないし１−Ｎによっ
てパルス信号の周期として検出される。このパルス信号
の周期は、パルス周期計数回路２−１ないし２−Ｎによ
って測定され、車輪の速度が求められる。この求められ
た車輪の速度は、制御部５を介して車輪速度差算出手段
３に通知される。以下車輪速度算出手段３および異常判
別手段４の動作を第２図図示フローチャートを用いて詳
細に説明する。In FIG. 1, as mentioned above, the axle AI or AN
The rotational speed of is detected as the period of the pulse signal by the wheel speed sensors 1-1 to 1-N. The period of this pulse signal is measured by pulse period counting circuits 2-1 to 2-N, and the speed of the wheel is determined. This determined wheel speed is notified to the wheel speed difference calculation means 3 via the control section 5. The operations of the wheel speed calculating means 3 and the abnormality determining means 4 will be explained in detail below using the flowchart shown in FIG.

尚、アンチスキッドブレーキ制御部７−１ないし？−Ｎ
は、制御部５から通知された制御信号に対応するアンチ
スキッド制動を行うものである。Incidentally, the anti-skid brake control section 7-1? -N
is for performing anti-skid braking corresponding to the control signal notified from the control unit 5.

第２図の■は、４車輪の各速度差を検出する状態を示す
。これは、第１図の車輪速センサｌ−１ないしｉＮ、お
よびパルス周期計数回路２−１ないし２−Ｎを用いて各
車輪の速度を測定することを意味している。本実施例の
場合には、Ｎの値が４の場合である。2 in FIG. 2 indicates a state in which the speed differences between the four wheels are detected. This means that the speed of each wheel is measured using wheel speed sensors l-1 to iN and pulse period counting circuits 2-1 to 2-N shown in FIG. In this embodiment, the value of N is 4.

図の■は、速度差がΔ■１以上のものがあるか否かを判
別する状態を示す。これは、車輪速度差算出手段３を用
いて算出した４個の車輪の間の速度差の組み合わせ６＆
１）のうち、所定の速度差ΔＶ１Ｖ２Ｏ６のがあるか否
かを判別することを意味している。■ in the figure indicates a state in which it is determined whether there is a speed difference greater than or equal to Δ■1. This is the combination 6& of the speed differences between the four wheels calculated using the wheel speed difference calculation means 3.
1) means determining whether or not there is a predetermined speed difference ΔV1V2O6.

図の■は、該当する速度差が３組あるか否かを判別する
状態を示す。これは、該当する速度差のものが３組ある
場合には、いずれの車輪のセンサシステムが異常（故障
）であるか否かが判別し得る可能性があるから、当該状
態を判別するものである。ＹＥＳの場合には９図の■を
実行する。ＮＯの場合には９図中■を実行する。■ in the figure indicates a state in which it is determined whether there are three sets of applicable speed differences. This is because if there are three sets of wheels with corresponding speed differences, it may be possible to determine which wheel's sensor system is abnormal (faulty). be. In the case of YES, execute ■ in Figure 9. In the case of NO, execute ■ in Figure 9.

図の■は、３ｍに共通な車輪があるか否かを判別する状
態を示す。ＹＥＳの場合には２図の■を実行する。Ｎｏ
の場合には５図の■を実行する。■ in the figure indicates a state in which it is determined whether or not there is a common wheel for 3 m. In the case of YES, execute ■ in Figure 2. No
In this case, execute ■ in Figure 5.

図の■は、Ｔ１時間継続して図の■ＹＥＳ、図の■ＹＥ
Ｓ、および図の■ＹＥＳの状態に保持されているか否か
を判別する状態を示す。ＹＥＳの場合には１図の■を実
行する。ＮＯの場合には。■ in the figure continues for T1 time, ■YES in the figure, ■YE in the figure
S, and ① in the figure shows a state in which it is determined whether or not the YES state is maintained. In the case of YES, execute ■ in Figure 1. In case of NO.

終了する。finish.

図の■は、該当する車輪センサが異常であると診断する
状態を示す。これは５図の■ＹＥＳ、図の■ＹＥＳ、図
の■ＹＥＳ、および図の■ＹＥＳの状態であったので、
該当する車輪センサを故障　　゛と診断したものである
。尚、センサ異常判定がなされた後に、正常な速度差が
所定時間検知された場合には２図の■以下の処理を再度
実行させることにより、トラクションによる誤判定を避
けることができる。■ in the figure indicates a state in which the corresponding wheel sensor is diagnosed as being abnormal. This was the state of ■YES in figure 5, ■YES in figure, ■YES in figure, and ■YES in figure.
The relevant wheel sensor has been diagnosed as having failed. Incidentally, if a normal speed difference is detected for a predetermined period of time after a sensor abnormality determination is made, erroneous determination due to traction can be avoided by re-executing the process shown in FIG.

図の■は、Ｔ１時間ａｍして図の■のＹＥＳと図の■の
Ｎｏの状態、あるいは図の■のＹＥＳ。■ in the figure is a state of YES in ■ in the figure and No in ■ in the figure after T1 time am, or YES in ■ in the figure.

図の■のＹＥＳと図の■のＮＯの状態が保持されている
か否かを判別する状態を示す。ＹＥＳの場合には３図の
■でセンサ異常と診断され、終了する。ＮＯの場合には
、終了する。This shows a state in which it is determined whether or not the YES state in the figure and the NO state in the figure are maintained. In the case of YES, a sensor abnormality is diagnosed as shown in (■) in Figure 3, and the process ends. If NO, the process ends.

以上説明した手順に従えば、速度差が所定以上の組み合
わせのものに対して少なくとも異常センサ情報として診
断することができると共に５異常センサとして診断され
る組によって特定の車輪センサが判別される場合には、
この判別されたセンサを異常（故障）であると診断する
ことができる。According to the procedure explained above, it is possible to diagnose as abnormal sensor information at least a combination of speed differences greater than a predetermined value, and when a specific wheel sensor is determined by a set of 5 abnormal sensors. teeth,
The determined sensor can be diagnosed as being abnormal (faulty).

〔発明の効果〕〔Effect of the invention〕

以上説明したように１本発明によれば、各車輪の速度を
計測してこれらの間の速度差を夫々算出し、この算出し
た夫々の速度差が所定値よりも大きいものを異常として
判別すると共に、この異常と判別された組み合わせに基
づいていずれの車輪に取り付けたセンサシステムが異常
であるかを判別する構成を採用しているため、センサシ
ステムの異常およびいずれのセンサシステムが異常であ
るかを診断することができる。特に、全ての組み合わせ
について速度差を算出し、この算出した速度差に基づい
て、いずれのセンサシステムが異常であるかを判別して
いるため、確実に異常を診断することができる。As explained above, according to the present invention, the speed of each wheel is measured, the speed difference between them is calculated, and if the calculated speed difference is larger than a predetermined value, it is determined as abnormal. In addition, the system uses a configuration that determines which sensor system attached to the wheel is abnormal based on the combination determined to be abnormal, so it is possible to determine whether the sensor system is abnormal or which sensor system is abnormal. can be diagnosed. In particular, since speed differences are calculated for all combinations and it is determined which sensor system is abnormal based on the calculated speed differences, abnormality can be reliably diagnosed.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の１実施例構成図、第２図は本発明の詳
細な説明するフローチャー１・を表す。 図中、１−１ないしｌ−Ｎは車輪速センサ、２−１ない
し２−Ｎはパルス周期計数回路、３は車輪速度差算出手
段、４は異常判別手段、５は制御部、６は処理部２７−
１ないし７−Ｎはアンチスキッドブレーキ制御部を表す
。 特許出願人　　富士通株式会社（外１名）代理人弁理士
　長谷用　文廣（外１名）＋−情５ＢＰｌ　の　１　プ
（ネを　４５つ　手−Ｌｌｌ＄　１　図 本を明η動イγとｉｔ明オろフロー手ヤード第　　　２
［ＺｌFIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 shows a flowchart 1 for explaining the present invention in detail. In the figure, 1-1 to 1-N are wheel speed sensors, 2-1 to 2-N are pulse period counting circuits, 3 is wheel speed difference calculation means, 4 is abnormality determination means, 5 is a control unit, and 6 is a process Part 27-
1 to 7-N represent anti-skid brake control units. Patent Applicant: Fujitsu Limited (1 other person) Representative Patent Attorney: Fumihiro Hase (1 other person) It Akira Flow Hand Yard No. 2
[Zl

Claims (1)

【特許請求の範囲】 各車輪の速度を検出する車輪速センサの異常を診断する
アンチスキッド装置の車速診断処理方式において、 各車輪の速度に対応した周期を持つパルス信号を夫々発
生させる車輪速センサ（１）と、 この車輪速センサ（１）によって発生させたパルス信号
の周期を測定するパルス周期計数回路（２）と、このパ
ルス周期計数回路（２）によって測定された各車輪の速
度の差を算出する車輪速度差算出手段（３）と、 この車輪速度差算出手段（３）によって算出された夫々
の速度差に基づいて車輪速センサ（１）の異常なものを
判別する異常判別手段（４）とを備え、この異常判別手
段（４）によって異常な車輪速センサ（１）を検出して
診断するよう構成したことを特徴とするアンチスキッド
装置の車速診断処理方式。[Claims] In a vehicle speed diagnostic processing method for an anti-skid device that diagnoses an abnormality in a wheel speed sensor that detects the speed of each wheel, the wheel speed sensor generates a pulse signal having a period corresponding to the speed of each wheel. (1), a pulse period counting circuit (2) that measures the period of the pulse signal generated by this wheel speed sensor (1), and the difference in speed of each wheel measured by this pulse period counting circuit (2). wheel speed difference calculation means (3) for calculating the wheel speed difference calculation means (3); and abnormality determination means (for determining whether the wheel speed sensor (1) is abnormal based on the respective speed differences calculated by the wheel speed difference calculation means (3)). 4), and is configured to detect and diagnose an abnormal wheel speed sensor (1) by the abnormality determining means (4).
JP8308686A 1986-04-10 1986-04-10 Speed diagnostic processing system for antiskid device Pending JPS62241756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8308686A JPS62241756A (en) 1986-04-10 1986-04-10 Speed diagnostic processing system for antiskid device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8308686A JPS62241756A (en) 1986-04-10 1986-04-10 Speed diagnostic processing system for antiskid device

Publications (1)

Publication Number Publication Date
JPS62241756A true JPS62241756A (en) 1987-10-22

Family

ID=13792368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8308686A Pending JPS62241756A (en) 1986-04-10 1986-04-10 Speed diagnostic processing system for antiskid device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03500635A (en) * 1988-05-10 1991-02-14 ルーカス・インダストリーズ・パブリック・リミテッド・カンパニー How to monitor the functionality of the rotation speed sensor
US5200897A (en) * 1989-05-26 1993-04-06 Nippondenso Co., Ltd. Vehicle control system
JP2007064659A (en) * 2005-08-29 2007-03-15 Advics:Kk Wheel speed sensor abnormality detection device
JP2018052149A (en) * 2016-09-26 2018-04-05 本田技研工業株式会社 Saddle riding type vehicle
WO2019082266A1 (en) * 2017-10-24 2019-05-02 本田技研工業株式会社 Saddle ride-type vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03500635A (en) * 1988-05-10 1991-02-14 ルーカス・インダストリーズ・パブリック・リミテッド・カンパニー How to monitor the functionality of the rotation speed sensor
US5200897A (en) * 1989-05-26 1993-04-06 Nippondenso Co., Ltd. Vehicle control system
JP2007064659A (en) * 2005-08-29 2007-03-15 Advics:Kk Wheel speed sensor abnormality detection device
JP2018052149A (en) * 2016-09-26 2018-04-05 本田技研工業株式会社 Saddle riding type vehicle
WO2019082266A1 (en) * 2017-10-24 2019-05-02 本田技研工業株式会社 Saddle ride-type vehicle

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