JPH04507143A - Monitoring device for digital frequency measuring devices - Google Patents

Monitoring device for digital frequency measuring devices

Info

Publication number
JPH04507143A
JPH04507143A JP3506786A JP50678691A JPH04507143A JP H04507143 A JPH04507143 A JP H04507143A JP 3506786 A JP3506786 A JP 3506786A JP 50678691 A JP50678691 A JP 50678691A JP H04507143 A JPH04507143 A JP H04507143A
Authority
JP
Japan
Prior art keywords
digital
monitoring device
frequency measuring
frequency
pulses
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
JP3506786A
Other languages
Japanese (ja)
Inventor
ヴェルナー，ディーター
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPH04507143A publication Critical patent/JPH04507143A/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
    • B60T2270/413—Plausibility monitoring, cross check, redundancy

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ディジタル式周波数測定装置のための監視装置従来の技術 冗長構成の理由でチャネルごとに２つのマイクロプロセッサが用いられているＡ ＢＳ／ＡＳＲシステムの場合、通常は、両方のディジタル式周波数測定装置の周 波数測定結果を互いに比較して、偏差がある場合にはエラーを表示するか、ない しは遮断信号を発生させる。このような周波数測定装置は、例えば回転数センサ のパルスの間隔Ｔを計数してめ、式１／Ｔを形成する構成に基づくものである。[Detailed description of the invention] Monitoring device conventional technology for digital frequency measuring devices A where two microprocessors are used per channel for redundancy reasons. For BS/ASR systems, the frequency of both digital frequency measurement devices is typically Compare wave number measurement results with each other and display errors if there are deviations or not. Otherwise, a cutoff signal will be generated. Such a frequency measuring device is, for example, a rotational speed sensor. This is based on a configuration in which the equation 1/T is formed by counting the pulse interval T of .

発明の利点 本発明による装置により、第２のマイクロプロセッサを、ないし既に設けられて いるマイクロプロセッサの相応の拡張を省略することができる。Advantages of invention The device according to the invention allows a second microprocessor to be installed or already provided. A corresponding expansion of the existing microprocessor can be omitted.

図面の説明 図面には本発明の実施例が示されている。図中、参照番号１により車輪速度を表 わす信号を送出するセンサｌが示されており、このセンサの信号はブロック２に おいて方形波信号へ変形される。これらの信号はマイクロプロセッサ３のディジ タル入力側へ供給される。Drawing description An exemplary embodiment of the invention is shown in the drawing. In the diagram, wheel speed is indicated by reference number 1. A sensor l is shown which sends out a signal, and the signal of this sensor is sent to block 2. is transformed into a square wave signal. These signals are digitally processed by microprocessor 3. Supplied to the tal input side.

このマイクロプロセッサの内部には、本発明との関連で必要なブロックだけしか 示されていない。Inside this microprocessor, only the blocks necessary in connection with the present invention are included. Not shown.

本発明がＡＢＳおよび／またはＡＳＲに用いられる場合、車輪速度信号からスリ ップ信号および加速／減速信号さらにはブレーキ圧制御信号を発生させる目的で 、当該マイクロプロセッサは付加的なブロックを有する。When the present invention is used for ABS and/or ASR, the wheel speed signal for the purpose of generating boost signals and acceleration/deceleration signals as well as brake pressure control signals. , the microprocessor has additional blocks.

ブロック３１において、新来するパルスを計数し逆数を形成することによって、 周波数つまり車輪の回転数がディジタル値で得られる。In block 31, by counting the new pulses and forming the reciprocal, The frequency, or the number of rotations of the wheel, can be obtained as a digital value.

このディジタル値をその正確さに関して検査すべきであるが、これに対してはブ ロック３１に相応する第２の構成素子を用いるのではなく、アナログ形式の全く 異なる周波数測定方式が適用される。この目的でブロック２の出力パルスは、ブ ロック４において一定の幅と高さのパルスに変換される。これらのパルスの幅は 、処理されるべき周波数が最大のときでもそれぞれ隣り合うパルス間になお所定 の間隔が存在するように、選定されている。次にこれらのパルスは低域通過フィ ルタ５へ導かれ、このフィルタはその出力側に入力信号の平均値を送出する。こ の平均値は入力周波数に比例している。このアナログ信号はマイクロプロセッサ 特表平４−５０７１４３　（２） のアナログ入力側を介してアナログ／ディジタル変換器３２へ供給され、この変 換器の出力値は比較器３３において、ブロック３１で算出されたディジタル値と 比較される。それらの値が互いに異なる場合、線路３４を介して警報信号、およ び／または制御を遮断するためのスイッチング信号が送出される。This digital value should be checked for accuracy; Rather than using a second component corresponding to the lock 31, an entirely analog type Different frequency measurement methods are applied. For this purpose the output pulse of block 2 is At lock 4, it is converted into a pulse of constant width and height. The width of these pulses is , even when the frequency to be processed is maximum, there is still a certain distance between each adjacent pulse. are selected so that there is an interval of These pulses are then passed through a low pass filter. 5, which delivers at its output the average value of the input signal. child The average value of is proportional to the input frequency. This analog signal is sent to the microprocessor Special table Hei 4-507143 (2) is supplied to the analog/digital converter 32 via the analog input side of the The output value of the converter is combined with the digital value calculated in block 31 in comparator 33. be compared. If their values differ from each other, an alarm signal and A switching signal is sent out to interrupt the control and/or control.

国際調査報告 一一情抛−＾−−−嚇　ＰＣＴ／ＥＰ　９１１００５４６international search report 11 emotion - ^--- Threat PCT/EP 91100546

Claims (2)

【特許請求の範囲】[Claims] １．ディジタル式周波数測定装置のための監視装置であって、当該監視装置には センサから送出されたパルスが導かれるようにし、該パルスの間隔は被測定周波 数に反比例するものであり、さらに当該監視装置にはディジタル形式の測定結果 が供給されるようにし、算出された周波数は比較によりその正確さに関して監視 されて、所定の大きさ以上の偏差であればエラーを示すようにした、ディジタル 式周波数測定装置のための監視装置において、 センサから送出されたパルスは付加的に、等しい幅と高さのパルスに変換される ようにし、変換された前記パルスは低域通過フィルタを介して導かれるようにし 、 前記低域通過フィルタの出力信号はディジタル信号に変換されるようにし、 さらにそれぞれ異なる手法で算出された、ディジタル形式の周波数の両測定結果 が互いに比較されるようにしたことを特徴とする、ディジタル式周波数測定装置 のための監視装置。1. A monitoring device for a digital frequency measuring device, the monitoring device including: The pulses sent out from the sensor are guided, and the interval between the pulses is determined by the frequency to be measured. In addition, the monitoring device has measurement results in digital form. is supplied and the calculated frequency is monitored for accuracy by comparison. The digital In a monitoring device for a type frequency measuring device, The pulses emitted by the sensor are additionally converted into pulses of equal width and height and the converted pulse is guided through a low-pass filter. , the output signal of the low-pass filter is converted into a digital signal; Furthermore, both measurement results of frequency in digital format are calculated using different methods. A digital frequency measuring device characterized in that the frequencies are compared with each other. Monitoring equipment for. ２．ＡＢＳ／ＡＳＲシステムにおいて当該監視装置を用いることにより、ただ１ つのディジタル式周波数測定装置だけが設けられるようにした請求項１記載の監 視装置。2. By using this monitoring device in ABS/ASR system, only one The monitoring system according to claim 1, wherein only one digital frequency measuring device is provided. Visual device.
JP3506786A 1990-05-04 1991-03-21 Monitoring device for digital frequency measuring devices Pending JPH04507143A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014315.5 1990-05-04
DE19904014315 DE4014315A1 (en) 1990-05-04 1990-05-04 Frequency counter surveillance for vehicle braking system

Publications (1)

Publication Number Publication Date
JPH04507143A true JPH04507143A (en) 1992-12-10

Family

ID=6405701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3506786A Pending JPH04507143A (en) 1990-05-04 1991-03-21 Monitoring device for digital frequency measuring devices

Country Status (5)

Country Link
EP (1) EP0481026A1 (en)
JP (1) JPH04507143A (en)
BR (1) BR9105739A (en)
DE (1) DE4014315A1 (en)
WO (1) WO1991017072A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401692B (en) * 1993-02-02 1996-11-25 Vaillant Gmbh METHOD FOR CONTROLLING A CONSUMER
DE19503271A1 (en) * 1995-02-02 1996-08-08 Bosch Gmbh Robert Anti-lock control system
DE19522135A1 (en) * 1995-06-19 1997-01-02 Bosch Gmbh Robert Anti-lock control system
DE102011084069A1 (en) * 2011-10-06 2013-04-11 Continental Teves Ag & Co. Ohg Method for determining a model form by means of a mathematical model in an electronically controlled motor vehicle brake system
US10145860B2 (en) 2016-03-11 2018-12-04 Epro Gmbh Speed detection using multiple processing paths

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340575C3 (en) * 1973-08-10 1981-04-16 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Anti-lock control system
US4092853A (en) * 1975-10-25 1978-06-06 Robert Bosch Gmbh Testing rotary movement-electrical signal transducer system, particularly for vehicle wheel anti-block transducer systems
DE2644646C2 (en) * 1976-10-02 1983-04-07 Robert Bosch Gmbh, 7000 Stuttgart Device for detecting one or more missing pulses in an otherwise regular pulse train
US4428224A (en) * 1979-03-23 1984-01-31 Sun Electric Corporation Apparatus and method for testing of a rotary movement-electrical signal transducer system
DD226708B1 (en) * 1984-09-03 1989-07-05 Medizin Labortechnik Veb K CIRCUIT ARRANGEMENT FOR THE RELIABILITY MONITORING OF SPEED PULSES
DE3437149A1 (en) * 1984-10-10 1986-04-17 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR TESTING CONTROL UNITS IN MOTOR VEHICLES
JPH077002B2 (en) * 1987-06-02 1995-01-30 トヨタ自動車株式会社 Rotation speed sensor abnormality detection device
DE3901776A1 (en) * 1989-01-21 1990-07-26 Wabco Westinghouse Fahrzeug SECURITY CIRCUIT

Also Published As

Publication number Publication date
BR9105739A (en) 1992-08-04
WO1991017072A1 (en) 1991-11-14
EP0481026A1 (en) 1992-04-22
DE4014315A1 (en) 1991-11-07

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