JPS60187837A - Air pressure detection system of tire - Google Patents
Air pressure detection system of tireInfo
- Publication number
- JPS60187837A JPS60187837A JP4425284A JP4425284A JPS60187837A JP S60187837 A JPS60187837 A JP S60187837A JP 4425284 A JP4425284 A JP 4425284A JP 4425284 A JP4425284 A JP 4425284A JP S60187837 A JPS60187837 A JP S60187837A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- air pressure
- tire
- axle
- distance
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発す１は自動車等において走行中でも常時タイヤの空
気圧を検出できるタイヤの空気圧検出方式％式％）
従来、タイヤの空気圧を検出する手法としてはシリング
にスプリングで支えられた可動ピストンを内装してなる
空気圧検出器を用い、この検出器の口をタイヤの空気バ
ルブに当接することによりタイヤの空気一部をシリンダ
内へ導入し、タイヤの空気圧と釣り合った時のスプリン
グの長さを読み取ってタイヤの空気圧を検出するのが一
般的であった。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention is based on a tire air pressure detection method that can constantly detect tire air pressure in a car, etc. even while the vehicle is running. Using an air pressure detector with a movable piston supported by a cylinder, by bringing the mouth of this detector into contact with the tire's air valve, part of the air from the tire is introduced into the cylinder, and the air pressure is balanced with the tire's air pressure. It was common to detect tire air pressure by reading the length of the spring.
したがって、斯かる手法はタイヤの空気圧測定ごとにタ
イヤの空気が抜けてしまいタイヤの空気圧に悪影響を及
ぼす欠点がある。また、自動車等が停車中でないと測定
できず、例えばタイヤの空気圧が不適切で走行性能に大
きく影響する高速道路等の走行中に於て常時監視できな
い欠点がある。Therefore, such a method has the disadvantage that air is released from the tire each time the tire air pressure is measured, which adversely affects the tire air pressure. Further, there is a drawback that measurement cannot be performed unless the vehicle is stopped, and cannot be constantly monitored while driving on a highway or the like where, for example, tire air pressure is inappropriate and has a great effect on driving performance.
（発明の目的）
本発明は斯かる欠点を排除するもので、その目的とする
ところはタイヤの空気圧を検出するに当り、当該空気圧
には何ら影響を及ぼすことなく正確に検出でき、しかも
自動車等が停車、走行中にかかわらず常時検出して適切
な空気圧か否かを継続的に監視することにより自動車等
の走行性能の維持、さらには安全性を向上できるタイヤ
の空気圧検出方式を提供するにある。(Objective of the Invention) The present invention eliminates such drawbacks, and its purpose is to accurately detect tire air pressure without affecting the air pressure in any way, and to be able to detect the air pressure in a tire without affecting the air pressure in any way. To provide a tire air pressure detection method that can maintain the driving performance of automobiles, etc. and further improve safety by constantly detecting whether the tire is at an appropriate air pressure or not, regardless of whether the tire is stopped or running. be.
（発明の構成）
本発明は自動車等のタイヤの空気圧検出方式に係り、そ
の主要構成とするところはタイヤを支持する車軸の対地
間距離を検出するセンサと、車軸と車体間の距離又は荷
重圧力を検出するセンサを具備し、上記各センサからの
検出結果を演算することによりタイヤの空気圧を検出す
ることを特徴とする。(Structure of the Invention) The present invention relates to a tire pressure detection method for automobiles, etc., and its main components include a sensor that detects the distance between the axle supporting the tire and the ground, and the distance or load pressure between the axle and the vehicle body. The present invention is characterized in that it is equipped with a sensor that detects the air pressure of the tire, and that the air pressure of the tire is detected by calculating the detection results from each of the sensors.
（実施例）
以下には本発明をさらに具体化した好適な実施例を挙げ
図面を参照して詳述する。図面に於て、第１図は本発明
に係る空気圧検出方式に用いるセンサの配設位置を示す
自動車等のサスペンション周辺の模式的構成図、第２図
は本発明に係る空気圧検出方式を適用した空気圧検出系
の機能ブロック図である。(Example) Below, preferred examples that further embody the present invention will be described in detail with reference to the drawings. In the drawings, Fig. 1 is a schematic diagram of the surroundings of a suspension of an automobile, etc., showing the arrangement positions of sensors used in the air pressure detection method according to the present invention, and Fig. 2 is a diagram showing the arrangement of sensors used in the air pressure detection method according to the present invention. FIG. 3 is a functional block diagram of an air pressure detection system.
先ず、第１図を参照しセンサの配設位置について説明す
る。同図中（１）は測定対象となるタイヤを備える車輪
で、この車輪（１）の中央に車軸（２）が軸重されてい
る。この車軸（２）と車体（３）の間にはサスペンショ
ンユニット（４）が介設されており、以上自動車等の一
般的サスペンション周辺部分を構成する。First, the arrangement positions of the sensors will be explained with reference to FIG. In the figure, (1) is a wheel equipped with a tire to be measured, and an axle (2) is loaded at the center of this wheel (1). A suspension unit (4) is interposed between the axle (2) and the vehicle body (3), and constitutes a general suspension peripheral portion of an automobile or the like.
一方、（５）は車軸（２）と車体（３）の間に介設した
ストロークセンサでサスペンションユニー／ ト（４）
のストローク、つまり車軸（２）と車体（３）間の距１
１１１１ （Ｌｓ）を検出する。このストロークセンサ
（５）は例えばスライド抵抗器等による抵抗値変化を計
測する位置センサ等を利用できる。On the other hand, (5) is a stroke sensor installed between the axle (2) and the vehicle body (3) and the suspension unit (4).
stroke, that is, the distance 1 between the axle (2) and the vehicle body (3)
1111 (Ls) is detected. As this stroke sensor (5), for example, a position sensor that measures a change in resistance value using a slide resistor or the like can be used.
また、（６）は車軸（２）に固設した対地センサで車軸
（２）の対地間距離（Ｌｅ）を検出する。この対地セン
サ（６）は超音波の反射による距離センサ等を利用でき
る。Further, (6) detects the distance (Le) between the axle (2) and the ground using a ground sensor fixed to the axle (2). This ground sensor (6) can use a distance sensor based on reflection of ultrasonic waves.
次に第２図を参照し空気圧検出系について具体的に説明
する。Next, the air pressure detection system will be specifically explained with reference to FIG.
空気圧検出系は大別して前記ストロークセンサ（５）と
前記対地センサ（６）からなるセンサ部（７）と、この
センサ部（７）からの検出結果を演算する演算処理部（
８）と、この演算処理部（８）によって演算した、タイ
ヤの空気圧を表示する表示部（９）からなる。The air pressure detection system is roughly divided into a sensor section (7) consisting of the stroke sensor (5) and the ground sensor (6), and an arithmetic processing section (7) that computes the detection results from the sensor section (7).
8), and a display section (9) that displays the tire air pressure calculated by the arithmetic processing section (8).
今、第１図に於て、サスペンションユニット（４）にか
かる荷重圧力を（Ｗ）、サスペンションユニット（４）
の縮みを （ΔＬｓ）タイヤの空気圧を（Ｐ）とすると
Ｐ ＝ ｆ （Ｌｅ、 Ｗ）・・・・・・・・・・・・
・・・ ■Ｗ＝ｆ（ΔＬｓ ） ・・・・・・・・・・
・・・・・ ■の関係がある。ここで無荷重における車
軸（２）と中休（３）間の距離を（Ｌｏ）とするすスト
ロークセンサ（５）からの検出結果（Ｌｓ）によって縮
み（ΔＬｓ）は
ΔＬｓ＝Ｌｏ−Ｌｓ ・・・・・・・・・・・・・・・
・・・ ■と容易にめることができる。Now, in Figure 1, the load pressure applied to the suspension unit (4) is (W), and the load pressure on the suspension unit (4) is
If the contraction of is (ΔLs) and the tire air pressure is (P), then P = f (Le, W)...
・・・ ■W=f(ΔLs) ・・・・・・・・・・・・
...There is the following relationship. Here, assuming that the distance between the axle (2) and the intermediate rest (3) under no load is (Lo), the contraction (ΔLs) is calculated by the detection result (Ls) from the stroke sensor (5) as ΔLs=Lo−Ls...・・・・・・・・・・・・・・・
... ■It can be easily determined.
そこで、演算処理部（８）に於て、先ず、第１演算処理
（イ）にて上記０式及び０式の演算を行い荷重圧力（Ｗ
）を得る。また、第２演算処理（ロ）にて上記０式の演
算を行えばタイヤの空気（Ｐ）を算出することができる
。Therefore, in the arithmetic processing section (8), first, in the first arithmetic processing (a), the above equations 0 and 0 are calculated to calculate the load pressure (W
). Further, by performing the calculation of the above equation 0 in the second calculation process (b), the tire air (P) can be calculated.
そして、算出された空気圧（Ｐ）を出力回路（ハ）にて
増幅等の所要の信号処理を行い、この信号処理された空
気圧（Ｐ）情報を例えば車室内インストルメントパネル
に配設したディジタル、又はアナログ表示部（９）に供
給し、空気圧（Ｐ）の値を視覚的に表示する。Then, the calculated air pressure (P) is subjected to necessary signal processing such as amplification in the output circuit (c), and this signal-processed air pressure (P) information is transmitted to a digital device installed in the vehicle interior instrument panel, for example. Alternatively, it is supplied to the analog display section (9) to visually display the value of the air pressure (P).
なお、実施例に於てストロークセンサ（５）の代りに荷
重圧力（Ｗ）を直接検出できる圧力センサを利用すれば
第２図における第１演算処理（イ）を省略することがで
きる。また、第２図における演算処理部（８）は車載コ
ンピュータを利用し、ソフトウェア（制御プログラム）
によって演算等各種処理を行う。この演算処理部（８）
はハードウェアによる演算回路の組合せであっても勿論
よい。In the embodiment, if a pressure sensor capable of directly detecting the load pressure (W) is used instead of the stroke sensor (5), the first calculation process (a) in FIG. 2 can be omitted. In addition, the arithmetic processing unit (8) in Fig. 2 utilizes the on-vehicle computer and executes software (control program).
performs various processing such as calculations. This calculation processing unit (8)
Of course, it may be a combination of hardware arithmetic circuits.
（発明の効果）
このように本発明に係るタイヤの空気圧検出方式はタイ
ヤを支持する車軸の対地間距離を検出するセンサと、車
軸と車体間の距離又は荷重圧力を検出するセンサを具備
し、各センサからの検出結果を演算してタイヤの空気圧
を検出するようにしたためタイヤにかかる荷重及びタイ
ヤの撓みから間接的に空気圧を検出することができ、タ
イヤの空気圧には直接影響を及ぼすことなく正確に検出
することができる。(Effects of the Invention) As described above, the tire air pressure detection method according to the present invention includes a sensor that detects the distance between the axle supporting the tire and the ground, and a sensor that detects the distance or load pressure between the axle and the vehicle body, Since the tire air pressure is detected by calculating the detection results from each sensor, the air pressure can be detected indirectly from the load on the tire and tire deflection, without directly affecting the tire air pressure. Can be detected accurately.
また、タイヤとは非接触で空気圧を検出できることから
、自動車等が停車、走行中にかかわらず常時検出でき、
タイヤの空気圧が適切か否か継続的に監視することによ
り自動車等の走行性能の維持、さらには安全性を向上さ
せることができる。In addition, since air pressure can be detected without contacting the tires, it can be detected at all times regardless of whether the car is stopped or moving.
By continuously monitoring whether the tire air pressure is appropriate, it is possible to maintain the running performance of an automobile, etc. and further improve safety.
さらにまた、車軸高及び車軸にかかる荷重を常に検出し
ているため車体及び各サスペンションユニットの状態が
常時間接的に把握でき車体の高度な姿勢制御への応用も
可能となる。Furthermore, since the height of the axle and the load applied to the axle are constantly detected, the state of the vehicle body and each suspension unit can be grasped directly at all times, making it possible to apply it to advanced posture control of the vehicle body.
第１図は本発明に係る空気圧検出方式に用いるセンサの
配設位置を示す自動車等のサスペンション周辺の模式的
構成図、第２図は本発明に係る空気圧検出方式を適用し
た空気圧検出系の機能ブロック図である。
（２）・・・・・・・・・車軸
（３）・・・・・・・・・車体
（５）・・・・・・・・・ストロークセンサ（６）・・
・・・・・・・対地センサ
（７）・・・・・・・・・センサ部
（８）・・・・・・・・・演算処理部
（９）・・・・・・・・・表示部
（イ）・・・・・・・・・第１演算処理（ロ）・・・・
・・・・・第２演算処理特許出願人 沖電気工業株式会
社
代理人 弁理士 下 １） 容一部Fig. 1 is a schematic configuration diagram of the surroundings of a suspension of an automobile, showing the arrangement positions of sensors used in the air pressure detection method according to the present invention, and Fig. 2 shows the functions of the air pressure detection system to which the air pressure detection method according to the present invention is applied. It is a block diagram. (2)...Axle (3)...Car body (5)...Stroke sensor (6)...
......Ground sensor (7)...Sensor section (8)...Calculation processing section (9)... Display section (a)...First arithmetic processing (b)...
...Second arithmetic processing patent applicant Patent attorney representing Oki Electric Industry Co., Ltd. 1) Department of Contents
Claims (1)
、車軸と車体間の距離又は荷重圧力を検出するセンサを
具備し、各センサからの検出結果を演算してタイヤの空
気圧を検出することを特徴とするタイヤの空気圧検出方
式。It is equipped with a sensor that detects the distance between the axle supporting the tire and the ground, and a sensor that detects the distance or load pressure between the axle and the vehicle body, and calculates the detection results from each sensor to detect the tire air pressure. Features a tire pressure detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4425284A JPS60187837A (en) | 1984-03-07 | 1984-03-07 | Air pressure detection system of tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4425284A JPS60187837A (en) | 1984-03-07 | 1984-03-07 | Air pressure detection system of tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60187837A true JPS60187837A (en) | 1985-09-25 |
Family
ID=12686334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4425284A Pending JPS60187837A (en) | 1984-03-07 | 1984-03-07 | Air pressure detection system of tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60187837A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0241894U (en) * | 1988-09-16 | 1990-03-22 | ||
| EP0578826A1 (en) * | 1991-11-11 | 1994-01-19 | Nippondenso Co., Ltd. | Tire pneumatic pressure sensor |
| EP0743202A1 (en) * | 1995-05-15 | 1996-11-20 | General Motors Corporation | Tyre pressure monitor |
| JP2008532845A (en) * | 2005-03-14 | 2008-08-21 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | A device for recognizing the condition of a tire provided on a wheel |
| DE102009053114B4 (en) * | 2008-11-17 | 2013-09-12 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Height detection system for a vehicle suspension assembly |
| JP2020163930A (en) * | 2019-03-28 | 2020-10-08 | 日立建機株式会社 | Wheel type work vehicle |
-
1984
- 1984-03-07 JP JP4425284A patent/JPS60187837A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0241894U (en) * | 1988-09-16 | 1990-03-22 | ||
| EP0578826A1 (en) * | 1991-11-11 | 1994-01-19 | Nippondenso Co., Ltd. | Tire pneumatic pressure sensor |
| EP0783982A1 (en) * | 1991-11-11 | 1997-07-16 | Nippondenso Co., Ltd. | Tire air pressure detecting device |
| EP0743202A1 (en) * | 1995-05-15 | 1996-11-20 | General Motors Corporation | Tyre pressure monitor |
| US5604482A (en) * | 1995-05-15 | 1997-02-18 | General Motors Corporation | Tire pressure monitor |
| JP2008532845A (en) * | 2005-03-14 | 2008-08-21 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | A device for recognizing the condition of a tire provided on a wheel |
| DE102009053114B4 (en) * | 2008-11-17 | 2013-09-12 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Height detection system for a vehicle suspension assembly |
| JP2020163930A (en) * | 2019-03-28 | 2020-10-08 | 日立建機株式会社 | Wheel type work vehicle |
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