JPS6122802B2 - - Google Patents
Info
- Publication number
- JPS6122802B2 JPS6122802B2 JP6150979A JP6150979A JPS6122802B2 JP S6122802 B2 JPS6122802 B2 JP S6122802B2 JP 6150979 A JP6150979 A JP 6150979A JP 6150979 A JP6150979 A JP 6150979A JP S6122802 B2 JPS6122802 B2 JP S6122802B2
- Authority
- JP
- Japan
- Prior art keywords
- reset
- power supply
- circuit
- control
- output
- 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
Links
- 238000009429 electrical wiring Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Safety Devices In Control Systems (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】
本発明は内燃機関の電子制御装置に関し、特に
電気配線の短絡による誤動作防止装置を有する電
子制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic control device for an internal combustion engine, and more particularly to an electronic control device having a malfunction prevention device due to a short circuit in electrical wiring.
通常の内燃機関の電子制御装置は、複数のセン
サからの電気的入力を受け、制御装置の演算制御
回路網が内燃機関の運転状態を演算して複数のア
クチユエータに出力信号を供給して所要の運転状
態に制御するようになつている。センサと演算制
御回路網との間及びアクチユエータと演算制御回
路網との間には夫々複数の導線から成る電気配線
によつて結合されている。 A typical electronic control unit for an internal combustion engine receives electrical input from multiple sensors, and the control unit's arithmetic control circuitry calculates the operating status of the internal combustion engine and supplies output signals to multiple actuators to control the required output. It is designed to control the operating state. The sensor and the arithmetic and control circuitry are coupled together, and the actuator and the arithmetic and control circuitry are coupled by electrical wiring each consisting of a plurality of conductive wires.
このような型式の電子制御装置においては、何
れかの配線が短絡した場合には、演算制御回路網
の内部電位が異常になり誤作動を生じてアクチユ
エータへの制御信号が不適切となる。又はセンサ
からの入力信号が正確でなくなる、又はアクチユ
エータが誤作動を行う等の下具合が生ずることが
ある。制御の異常のため、機関の損傷又は事故の
危険も生ずる。 In this type of electronic control device, if any of the wiring is short-circuited, the internal potential of the arithmetic and control circuitry becomes abnormal, causing malfunction and making the control signal to the actuator inappropriate. Alternatively, conditions such as the input signal from the sensor becoming inaccurate or the actuator malfunctioning may occur. There is also a risk of engine damage or accidents due to control abnormalities.
本発明の目的は、短絡時の影響の大きい特定の
電気配線の短絡を自動的に検出して機関の運転を
停止させる電子制御装置を提供する。 SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic control device that automatically detects a short circuit in a specific electrical wiring that has a large effect when a short circuit occurs, and stops the operation of an engine.
上述の目的を達するための本発明による電子制
御装置は、一以上のセンサと一以上のアクチユエ
ータとが電気的制御回路網、電源及び電気配線に
よつて結合され、該電気的制御回路網をリセツト
装置の零レベル信号でリセツトするよう構成し、
さらに上記電源とリセツト装置との間にダイオー
ドを設けることにより、電源の電気配線が短絡し
た時に上記リセツト装置の出力信号を０レベルと
し、上記電気的制御回路網をリセツト状態にした
ものである。 To achieve the above-mentioned object, an electronic control device according to the present invention includes one or more sensors and one or more actuators coupled by an electrical control network, a power source and an electrical wiring, the electrical control network being reset. configured to be reset by the zero level signal of the device,
Further, by providing a diode between the power supply and the reset device, when the electrical wiring of the power supply is short-circuited, the output signal of the reset device is set to 0 level, and the electrical control circuit network is reset.
本発明の装置は、確実に自動的に作動して機関
を停止させるものであり、従つて、電源短絡に附
随する不具合は全く生じない。 The device of the present invention operates reliably and automatically to stop the engine, so that there are no problems associated with power short circuits.
本発明を例示とした実施例並びに図面について
説明する。 Embodiments and drawings illustrating the present invention will be described.
第１図は本発明による内燃機関の電子制御装置
を示し、制御装置１６は電源１９から正負の導線
２６，２７を介して電源電圧を供給される。図に
１組のみを示した複数のセンサ１７は正負の導線
２１，２２を介して制御装置１６から8V直流電
圧が供給され、機関の運転状態を検出し該運転状
態を電圧信号に変換し、導線２０を経て上記電圧
信号を制御装置１６に供給するものである。図に
１組のみを示した複数のアクチユエータ１８は正
負の導線２４，２５を介して電源電圧が供給され
る。制御装置１６からの作動指令信号は導線２３
を経てアクチユエータ１８に供給されて所要の作
動を行わせる。 FIG. 1 shows an electronic control device for an internal combustion engine according to the present invention, in which the control device 16 is supplied with power supply voltage from a power source 19 via positive and negative conductors 26, 27. A plurality of sensors 17, only one set of which is shown in the figure, are supplied with 8V DC voltage from the control device 16 via positive and negative conductors 21 and 22, detect the operating state of the engine, convert the operating state into a voltage signal, The voltage signal is supplied to the control device 16 via a conductor 20. A plurality of actuators 18, only one set of which is shown in the figure, are supplied with a power supply voltage through positive and negative conducting wires 24 and 25. The operation command signal from the control device 16 is transmitted through the conductor 23
The signal is supplied to the actuator 18 through the circuit 18 to perform the required operation.
次に制御装置１６の構成を説明する。制御装置
１６には後に詳述する制御回路網２８と、内部電
源回路２９と、リセツト回路３０とを有する。内
部電源回路２９は電源１９の電圧を受けて5V及
び8Vの定電圧を発生して所要のセンサ１７及び
制御回路網２８に供給する。リセツト回路３０は
スイツチ３２によつて電源１９がオンとなつた後
に一定時間遅れて制御回路網２８にリセツト信号
を供給する。 Next, the configuration of the control device 16 will be explained. The control device 16 includes a control circuit network 28, an internal power supply circuit 29, and a reset circuit 30, which will be described in detail later. The internal power supply circuit 29 receives the voltage from the power supply 19, generates constant voltages of 5V and 8V, and supplies them to the required sensors 17 and control circuitry 28. The reset circuit 30 supplies a reset signal to the control circuitry 28 with a certain time delay after the power supply 19 is turned on by the switch 32.
制御回路網２８はセンサ１７の入力を受けて最
適の制御信号を演算してアクチユエータを作動さ
せる回路網であり、第２図に示す通り、CPU３
３，RAM３４，ROM３５，入出力用LSi３６，
入力インターフエース３７，出力インターフエー
ス３８を有する。ROM３５，RAM３４は夫々複
数個とする場合が多い。各素子は内部電源回路２
９からの5V電源によつて作動するが、入出力LSi
はＡ／Ｄ変換器を内蔵するため別に電源回路２９
からの8V電源を必要とする。リセツト回路３０
からのリセツト信号はCPU３３，入出力LSi３６
のリセツトを行う。ここでリセツト信号が零レベ
ルを保つ時にリセツトされ、すべての出力動作を
停止するよう構成する。 The control circuit network 28 is a circuit network that receives input from the sensor 17 and calculates an optimal control signal to operate the actuator.As shown in FIG.
3, RAM34, ROM35, LSi36 for input/output,
It has an input interface 37 and an output interface 38. In many cases, there are a plurality of each of the ROM 35 and RAM 34. Each element has an internal power supply circuit 2
It is operated by 5V power supply from 9, but the input/output LSi
has a built-in A/D converter, so a separate power supply circuit 29 is required.
Requires 8V power from Reset circuit 30
The reset signal from the CPU33, input/output LSi36
Perform a reset. Here, when the reset signal remains at zero level, it is reset and all output operations are stopped.
本発明は、リセツト回路３０の出力回路と内部
電源回路２９の正の出力回路２１との間にダイオ
ード３１を介挿したものである。通常はダイオー
ド３１の陰極側は8Vであり、陽極側5Vとする。
もし導線２１が短絡して0Vとなつた時はダイオ
ード３１の陰極側が0Vとなり、ダイオード３１
は順方向となる。従つて制御回路網２８に入るリ
セツト回路出力は０レベルに保たれ、制御回路網
２８はリセツト状態を保ち、制御回路網２８内の
入出力LSi等のすべての出力は停止される。 In the present invention, a diode 31 is inserted between the output circuit of the reset circuit 30 and the positive output circuit 21 of the internal power supply circuit 29. Normally, the voltage on the cathode side of the diode 31 is 8V, and the voltage on the anode side is 5V.
If the conductor 21 is short-circuited and becomes 0V, the cathode side of the diode 31 becomes 0V, and the diode 31
is in the forward direction. Therefore, the reset circuit output entering the control circuitry 28 is held at a 0 level, the control circuitry 28 remains in the reset state, and all outputs such as input/output LSi within the control circuitry 28 are stopped.
以上説明したごとく、本発明によれば、電源か
らの配線が短絡した場合には、簡単な回路によつ
てリセツト信号を零レベルに保つことにより、全
出力を停止させることが出来るので、異常制御や
装置の暴走等の異常事態が発生するのを有効に防
止することが出来るという効果がある。 As explained above, according to the present invention, if the wiring from the power supply is short-circuited, all output can be stopped by keeping the reset signal at zero level using a simple circuit, so abnormal control can be performed. This has the effect of effectively preventing the occurrence of abnormal situations such as runaway of the device or runaway of the device.
第１図は本発明制御装置のシステム図、第２図
は第１図の制御回路網のブロツク図である。
１６……制御装置、１７……センサ、１８……
アクチユエータ、１９……電源、２８……制御回
路網、２９……内部電源回路、３０……リセツト
回路、３１……ダイオード、３３……CPU、３
４……RAM、３５……ROM、３６……入出力
LSi。
FIG. 1 is a system diagram of the control device of the present invention, and FIG. 2 is a block diagram of the control circuitry shown in FIG. 16...control device, 17...sensor, 18...
Actuator, 19...Power supply, 28...Control circuit network, 29...Internal power supply circuit, 30...Reset circuit, 31...Diode, 33...CPU, 3
4...RAM, 35...ROM, 36...input/output
LSi.
Claims (1)
と、電気的制御回路網と、上記センサ又はアクチ
ユエータの少なくとも一部に電力を供給する第１
電源と、上記電気的制御回路網の少なくとも一部
に電力を供給する第２電源とが電気配線で接続さ
れた内燃機関の電子制御装置において、上記電気
的制御回路網をリセツト装置の零レベル信号でリ
セツトするように構成し、かつ上記第１電源の出
力端と上記リセツト装置の出力端との間に、正常
時は逆バイアス、上記第１電源の上記出力端の短
絡時は順バイアスとなる向きにダイオードを接続
し、第１電源とセンサ又はアクチユエータを接続
する電気配線が短絡したときにリセツト装置の出
力端を零レベルにして電気的制御回路網をリセツ
ト状態にすることを特徴とする内燃機関の電子制
御装置。1 one or more sensors, one or more actuators, electrical control circuitry, and a first
In an electronic control device for an internal combustion engine, in which a power source and a second power source that supplies power to at least a part of the electrical control circuit are connected by electrical wiring, a zero level signal of a device for resetting the electrical control circuit is provided. and a reverse bias is applied between the output terminal of the first power supply and the output terminal of the reset device during normal operation, and a forward bias is applied when the output terminal of the first power supply is short-circuited. The internal combustion apparatus is characterized in that the output end of the reset device is set to zero level and the electrical control circuit is reset when the electrical wiring connecting the first power source and the sensor or actuator is short-circuited. Engine electronic control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6150979A JPS55154601A (en) | 1979-05-21 | 1979-05-21 | Electronic control unit for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6150979A JPS55154601A (en) | 1979-05-21 | 1979-05-21 | Electronic control unit for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55154601A JPS55154601A (en) | 1980-12-02 |
| JPS6122802B2 true JPS6122802B2 (en) | 1986-06-03 |
Family
ID=13173123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6150979A Granted JPS55154601A (en) | 1979-05-21 | 1979-05-21 | Electronic control unit for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55154601A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566675U (en) * | 1979-06-29 | 1981-01-21 | ||
| JPS59212386A (en) * | 1983-05-12 | 1984-12-01 | 新明和工業株式会社 | Controller for operation of boom loaded car |
| JPH0386401U (en) * | 1989-12-25 | 1991-09-02 | ||
| DE102009053129A1 (en) | 2009-11-13 | 2011-05-19 | Sms Siemag Ag | Sliding block for a joint spindle |
-
1979
- 1979-05-21 JP JP6150979A patent/JPS55154601A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55154601A (en) | 1980-12-02 |
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