KR930008397B1 - Vehicle driving condition detecting apparatus - Google Patents

Vehicle driving condition detecting apparatus Download PDF

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KR930008397B1
KR930008397B1 KR1019900008175A KR900008175A KR930008397B1 KR 930008397 B1 KR930008397 B1 KR 930008397B1 KR 1019900008175 A KR1019900008175 A KR 1019900008175A KR 900008175 A KR900008175 A KR 900008175A KR 930008397 B1 KR930008397 B1 KR 930008397B1
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voltage
output
converted
water temperature
temperature
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KR1019900008175A
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KR910001368A (en
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도시로 하라
마사히꼬 사야마
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미쯔비시 덴끼 가부시끼 가이샤
시끼 모리야
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G01K7/25—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

내용 없음.No content.

Description

차량의 운전상태 검출장치Driving state detection device of vehicle

제 1 도 및 제 2 도는 본 발명 장치의 제 1 및 제 2 의 실시예에 의한 구성도.1 and 2 are schematic diagrams according to the first and second embodiments of the apparatus of the present invention.

제 3 도는 본 발명 장치의 제 1 의 실시예에 의한 동작을 도시하는 플로우챠트도.3 is a flowchart showing the operation according to the first embodiment of the apparatus of the present invention.

제 4 도 및 제 5 도는 A/D변환값을 온도 데이타로 변환하기 위한 데이타 맵.4 and 5 are data maps for converting A / D conversion values into temperature data.

제 6 도는 더미스터의 특성도.6 is a characteristic diagram of a dummyster.

제 7 도는 본 발명에 의한 더미스터 주위 온도와 A/D변환기의 입력 전압과의 관계도.7 is a relationship between the dummyster ambient temperature and the input voltage of the A / D converter according to the present invention.

제 8 도 및 제 9 도는 종래 장치의 구성도.8 and 9 are schematic diagrams of a conventional apparatus.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 수온 감지기 R1내지 R4: 저항1: water temperature detector R 1 to R 4 : resistance

Q1, Q2: 트랜지스터 2a : 마이크로 컴퓨터Q 1 , Q 2 : Transistor 2a: Microcomputer

2b : A/D변환기2b: A / D converter

본 발명은 차량의 운전상태 검출 장치에 관한 것이다.The present invention relates to an apparatus for detecting a driving state of a vehicle.

제 8 도는 종래 장치의 구성을 도시하며, (1)은 엔진의 냉각 수온을 검출하는 수온 감지기이며, 더미스터로 구성되어 있다. 더미스터는 제 6 도에 도시하듯이 주위온도에 따라서 저항이 변화한다. 수온 감지기(1)의 출력은 제어부(2)로 입력되며, 우선 저항 R1, R2로 제 7 도의 파선으로 도시하는 전압으로 변환되며, 다음에 A/D변환기(26)에 의해서 디지틀 신호로 변환되며, 다시 마이크로 컴퓨터(2a)에 수온 정보로서 입력된다. 마이크로 컴퓨터(2a)는 상기 수온 정보를 기준으로 해서 각종의 차량 특성 제어를 행한다.8 shows the configuration of a conventional apparatus, where (1) is a water temperature sensor for detecting cooling water temperature of an engine, and is composed of a dummyster. As shown in Fig. 6, the dummyster changes in resistance in accordance with the ambient temperature. The output of the water temperature detector 1 is input to the control unit 2, first of which is converted into a voltage shown by dashed lines in FIG. 7 by the resistors R 1 and R 2 , and then converted into a digital signal by the A / D converter 26. It is converted and input again as water temperature information to the microcomputer 2a. The microcomputer 2a performs various vehicle characteristic control on the basis of the water temperature information.

그러나, 제 8 도에 도시한 종래 장치에선, 제 7 도에 도시하듯이 저온측에서의 검출 정밀도를 향상시키듯이 R1, R2를 정하면, 고온측에선 온도 변화에 따라서 전압이 그다지 변화하지 않으며, 고온측에서의 검출정밀도는 저하되었다.However, in the conventional apparatus shown in FIG. 8, when R 1 and R 2 are determined to improve the detection accuracy on the low temperature side as shown in FIG. 7, on the high temperature side, the voltage does not change very much in response to the temperature change. The detection accuracy was lowered.

그래서, 제 9 도에 도시하듯이 저온측 검출용의 수온 감지기(1a)와 고온측 검출용의 수온 감지기(1b)를 설치하고, 이것들에 각각 전압 변환수단(R1), (R2) 및 (R1a), (R2a)를 접속하고, 각각의 출력을 A/D변환기(2b)를 거쳐서 마이크로 컴퓨터(2a)에 입력토록하고 있으며, 이것은 저온시에는 수온 감지기(1a)측으로부터의 입력에 의해서 수온 정보를 얻으며, 고온시에는 수은 감지기(1b)측부터의 입력에 의해서 수온 정보를 얻는 것이다.Thus, as shown in FIG. 9, the low temperature side water temperature detector 1a and the high temperature side detection water temperature detector 1b are provided, and these are respectively provided with voltage converting means R 1 , R 2 , and (R 1a ) and (R 2a ) are connected, and each output is inputted to the microcomputer 2a via the A / D converter 2b, which is input from the water temperature sensor 1a side at low temperature. The water temperature information is obtained by the above, and at the high temperature, the water temperature information is obtained by the input from the mercury detector 1b side.

제 9 도에 도시한 종래 장치에선 넓은 온도 범위에서 높은 검출 정밀도가 얻어지는데, 수온 감지기나 전압 변환 수단이 2개씩 필요하게 되며, 고가로 된다는 과제가 있었다.In the conventional apparatus shown in FIG. 9, high detection accuracy can be obtained over a wide temperature range, but two water temperature sensors and two voltage converting means are required, resulting in a high cost.

본 발명은 상기와 같은 과제를 해결하기 위해 이뤄진 것이며, 넓은 범위에서 높은 검출 정밀도가 얻어짐과 더불어 값싼 차량의 운전상태 검출 장치를 얻은 것을 목적으로 한다.The present invention has been made to solve the above problems, and an object of the present invention is to obtain a low-driving vehicle state detection device while obtaining high detection accuracy in a wide range.

본 발명에 관계하는 차량의 운전 상태 검출 장치는 운전 상태 검출 수단의 출력에 대응한 전압을 발생하는 전압 변환 수단과, 전압 변환 수단의 출력을 디지틀 변환하는 A/D변환 수단과, A/D변환 수단의 출력에 따라서 전압 변환 수단의 출력 특성을 절환하는 특성 절환수단을 구비한 것이다.The driving state detection apparatus for a vehicle according to the present invention includes voltage conversion means for generating a voltage corresponding to the output of the driving state detection means, A / D conversion means for digitally converting the output of the voltage conversion means, and A / D conversion. And a characteristic switching means for switching the output characteristic of the voltage converting means in accordance with the output of the means.

본 발명에 있어선 운전 상태 검출 수단의 출력은 전압으로 변환되며, 다시 A/D변환되고, 상기 A/D변환값이 소정값보다 큰지 아닌지에 의해서 전압 변환 특성이 절환된다.In the present invention, the output of the driving state detecting means is converted into a voltage, A / D converted again, and the voltage conversion characteristic is switched by whether or not the A / D converted value is larger than a predetermined value.

이하, 본 발명의 실시예를 도면과 더불어 설명한다. 제 1 도는 본 발명의 제 1 실시예에 의한 운전 상태검출 장치의 구성을 도시하며, (Q1)은 트랜지스터, (R3)은 저항이며, 트랜지스터(Q1)과, 저항(R3)의 직렬 접속이 저항(R1)과 병렬로 접속되며, 트랜지스터(Q1)의 베이스엔 마이크로 컴퓨터(2a)의 출력 포트(P1)로부터 신호가 보내진다.Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings. 1 shows the configuration of an operating state detection apparatus according to a first embodiment of the present invention, wherein Q 1 is a transistor, R 3 is a resistor, and transistor Q 1 and resistor R 3 are The series connection is connected in parallel with the resistor R 1 , and a signal is sent from the output port P 1 of the microcomputer 2a to the base of the transistor Q 1 .

다음에, 상기 구성의 동작을 제 3 도의 플로우챠트도를 써서 설명한다. 제어부(2)는 도시하지 않은 전원을 온하면 스타트하며, 스텝(101)에선 판단 플래그를 리세트하고, 스텝(102)에선 (P1)으로부터 H신호를 출력한다. 이것으로, 트랜지스터(Q1)는 오프되며, 수온 감지기(1)의 출력은 저항(R1), (R1) 전압으로 변환되며, 상기 전압은 스텝(103)에서 A/D변환기(2b)로 A/D변환되며, WT로서 기억된다. 스텝(104)에선 이 WT와 판정값 α(예컨대, 제 7 도의 60℃에 대응한 값)를 비교하고, WT〉α이면(즉, 60℃보다 저온) 검출정밀도가 양호하다고 판단하고, 스텝(108)로 나아간다.Next, the operation of the above configuration will be described with reference to the flowchart of FIG. The control unit 2 starts when the power supply (not shown) is turned on, resets the determination flag in step 101, and outputs an H signal from P 1 in step 102. By this, the transistor Q 1 is turned off, and the output of the water temperature sensor 1 is converted into the resistors R 1 and R 1 , which voltage is converted to the A / D converter 2b in step 103. A / D is converted into and stored as WT. In step 104, the WT is compared with the determination value α (e.g., a value corresponding to 60 DEG C in FIG. 7). If WT > α (i.e., lower temperature than 60 DEG C), it is determined that the detection accuracy is good, Go to 108).

WT〈α이면, 60℃이상이므로 검출 정밀도가 불량하다고 판단하고, 스텝(105)에서 플래그를 세트하고, 스텝(106)에선 (P1)로부터 L신호를 출력해서 트랜지스터(Q1)을 온시킨다. 이것으로 수온 감지기(1)의 출력은 저항 R1내지 R3에 의해 전압으로 변환되며, 스텝(107)에서 A/D변환된다. 상기 전압은 제 7 도에서 실선으로 도시하는 것으로 되며, 온도 변화에 대한 전압 변화가 커지며, 60℃이상에서의 검출 정밀도가 향상한다. 스텝(108)에선 판단플래그가 세트인지 리세트인지를 판단하며, 리세트되어 있으면, 즉, 60℃이하이면 스텝(109)에서 제 4 도에 도시하는 맵 f1(WT)를 선택하고, 보간 연산을 행해서 온도 데이타로 변환한다. 판단 플래그가 세트인 경우 즉 60℃ 이상인 경우엔 스텝(110)에서 제 5 도에 도시하는 맵(f1)(WT)을 선택하며, 보간 연산해서 온도 데이타로 한다. 이것들의 온도 데이타는 연료 분사제어나 점화시 제어에 쓰인다.If WT <α, it is determined that the detection accuracy is poor because it is 60 ° C or higher. In step 105, the flag is set, and in step 106, the L signal is output from P 1 to turn on the transistor Q 1 . . As a result, the output of the water temperature sensor 1 is converted into a voltage by the resistors R 1 to R 3 , and A / D converted in step 107. The voltage is shown as a solid line in FIG. 7, the voltage change with respect to the temperature change becomes large, and the detection accuracy in 60 degreeC or more improves. In step 108, it is determined whether the judgment flag is set or reset, and if it is reset, i.e., 60 ° C. or less, the map f 1 (WT) shown in FIG. 4 is selected in step 109, and interpolated. The calculation is performed to convert the temperature data. If the determination flag is set, that is, 60 ° C. or more, the map f 1 (WT) shown in FIG. 5 is selected in step 110, and interpolation is performed to obtain temperature data. These temperature data are used for fuel injection control and ignition control.

상기 실시예에선 이상과 같은 소정 온도 이상과 이하로 전압 변환수단의 변환 특성을 바꾸고 있으며, 넓은 온도 범위에서 높은 검출 정밀도가 얻어진다. 또한, 상기 실시예에선(R2)를 설치하고 있는데 없어도 된다. 또, (R1), (R2)는 저온측이 고정밀도가 되게 설정되고 있으나 역으로 저온측에서 트랜지스터(Q1)를 온시키게 해도 된다.In the above embodiment, the conversion characteristic of the voltage conversion means is changed above and below the predetermined temperature as above, and high detection accuracy is obtained in a wide temperature range. Further, there is installed a (R 2) In the above embodiments it is not required. Further, (R 1), (R 2) but the low-temperature side is set to be a high accuracy may thereby turns on the transistor (Q 1) at low temperature side in the station.

제 2 도는 본 발명의 제 2 의 실시예를 도시하며, 트랜지스터(Q1)과 저항(R2)을 대신해서 트랜지스터(Q2)와 저항(R4)의 직렬 회로를 저항(R2)와 병렬로 접속하고, 트랜지스터(Q2)의 베이스에 마이크로 컴퓨터(2a)의 (P2)포트로부터 신호를 보내도록 하고 있으며, (P1)로부터 출력한 레벨과 (P2)로부터 출력하는 레벨을 역으로 하는 이외는 제 1 의 실시예와 마찬가지며, 마찬가지 효과를 나타낸다.Second turn shows a second embodiment of the present invention, the transistor (Q 1) and a resistance (R 2) instead of to the transistor (Q 2) and a resistor (R 4) a series circuit resistance (R 2) and the It is connected in parallel and sends a signal from the (P 2 ) port of the microcomputer 2a to the base of the transistor Q 2 , and the level output from (P 1 ) and the level output from (P 2 ) Except for reverse, it is the same as that of 1st Example, and shows the same effect.

또한, 상기 각 실시예에 있어선 엔진 수온을 검출토록 했는데 차량의 다른 운전상태를 검출하는 경우에도 본 발명을 적용할 수 있다.In the above embodiments, the engine water temperature is detected, but the present invention can also be applied to detecting other driving states of the vehicle.

이상과 같이 본 발명에 의하면, 운전 상태 검출수단의 출력을 전압으로 변환하고, A/D변환했을 때, 상기 A/D변환값이 소정 값보다 큰지 아닌지에 의해서 상기한 전압 변환시의 출력 특성을 절환하도록 하고 있으며, 검출 정밀도가 악화되는 것같은 영역에 있어선 전압 변환 특성의 절환에 의해 높은 검출 정밀도가 얻어짐과 더불어 운전상태 검출 수단이나 전압 수단은 1개 설치하면 되며, 염가로 형성할 수 있다.As described above, according to the present invention, when the output of the driving state detecting means is converted to voltage and A / D converted, the output characteristics during the voltage conversion are switched by whether or not the A / D converted value is larger than a predetermined value. In an area where the detection accuracy is deteriorated, high detection accuracy can be obtained by switching voltage conversion characteristics, and one operation state detection means or one voltage means can be provided at low cost.

Claims (1)

차량의 운전 상태를 검출하는 운전 상태 검출 수단과, 운전 상태 검출 수단의 출력에 대응한 전압을 발생하는 전압 변환 수단과, 전압 변환 수단의 출력을 디지탈 신호로 변환하는 A/D변환 수단과, A/D변환수단의 출력이 소정값보다 큰지 아닌지로 전압 변환 수단의 출력 특성을 절환하는 특성 절환 수단을 구비한 것을 특징으로 하는 차량의 운전 상태 검출장치.Driving state detecting means for detecting a driving state of the vehicle, voltage converting means for generating a voltage corresponding to the output of the driving state detecting means, A / D converting means for converting the output of the voltage converting means into a digital signal, and A And a characteristic switching means for switching the output characteristic of the voltage converting means to whether or not the output of the / D converting means is larger than a predetermined value.
KR1019900008175A 1989-06-08 1990-06-04 Vehicle driving condition detecting apparatus KR930008397B1 (en)

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Application Number Priority Date Filing Date Title
JP1-146207 1989-06-08
JP146207 1989-06-08
JP1146207A JPH0310132A (en) 1989-06-08 1989-06-08 Apparatus for detecting driving state of vehicle

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KR910001368A KR910001368A (en) 1991-01-30
KR930008397B1 true KR930008397B1 (en) 1993-08-31

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JP3126476B2 (en) * 1991-04-23 2001-01-22 株式会社東芝 Cryogenic temperature measurement device
DE4215759A1 (en) * 1992-02-21 1993-08-26 Paul Prof Dr Ing Guempel Road vehicle with electrical clock and parking time display - that has control switch operated when engine is turned off to set time display on parking meter
JPH06186090A (en) * 1992-07-03 1994-07-08 Hochiki Corp Thermal analog fire detector
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JP2009121825A (en) * 2007-11-12 2009-06-04 Shindengen Electric Mfg Co Ltd Temperature detection circuit
JP2023070966A (en) * 2021-11-10 2023-05-22 株式会社オートネットワーク技術研究所 Temperature detection device, temperature detection method, and computer program

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DE3039318C2 (en) * 1980-10-17 1982-10-21 Becker Autoradiowerk Gmbh, 7516 Karlsbad Arrangement for measuring and / or monitoring and / or evaluating physical quantities in a motor vehicle
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DE4018281A1 (en) 1990-12-20
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