KR200162510Y1 - Display device of detecting of revolution of diesel engine for vehicle - Google Patents
Display device of detecting of revolution of diesel engine for vehicle Download PDFInfo
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- KR200162510Y1 KR200162510Y1 KR2019940038893U KR19940038893U KR200162510Y1 KR 200162510 Y1 KR200162510 Y1 KR 200162510Y1 KR 2019940038893 U KR2019940038893 U KR 2019940038893U KR 19940038893 U KR19940038893 U KR 19940038893U KR 200162510 Y1 KR200162510 Y1 KR 200162510Y1
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- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
- G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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Abstract
본 고안은 자동차용 디젤엔진 회전수검출표시장치에 관한 것으로 종래에는 엔진 회전수검출표시장치의 회로구성의 특성상 전원 또는 혼(Horn) 잡음 등 외부잡음에 의하여 엔진 회전수 지침에 변화가 발생하는 바, 비교기(131)의 기준전압을 높게 하면 저속을 표지하지 않으며, 또한 시상수(RC)를 변화시키면 고속을 지시하지 않는 성능상의 결함이 발생하였다.The present invention relates to a diesel engine speed detection display device for a vehicle. In the related art, due to the nature of the circuit configuration of the engine speed detection display device, a change occurs in the engine speed guide due to external noise such as power or horn noise. When the reference voltage of the comparator 131 is increased, the low speed is not indicated, and when the time constant RC is changed, a performance defect that does not indicate the high speed occurs.
본 고안은 자동차용 디젤엔진 회전수검출표시장치에 있어서, 입력잡음에 의한 회전수표시장치(50)의 지침떨림을 방지하도록 필터회로(10)(20)의 전단에 저항(1-2)과 콘덴서(1-1)를 병렬연결한 입력병렬공진회로(1)를 연결함으로써 에너지원이 작은 잡음에 대하여 저항(1-2)이 부하로 작용하여 잡음을 상쇄해주어서 혼(Horn) 잡음, 와이퍼 잡음 등 자동차의 코일조작에 의한 외부잡음을 제거가능하므로 정확한 표지가 가능한 이점이 있다.The present invention is a vehicle diesel engine speed detection display device, the resistance (1-2) and the front end of the filter circuit 10, 20 to prevent the guide vibration of the speed display device 50 by the input noise By connecting the input parallel resonant circuit (1) in which the capacitor (1-1) is connected in parallel, the resistor (1-2) acts as a load to the noise of a small energy source, and cancels the noise, thereby making the horn noise and the wiper It is possible to remove the external noise by the operation of the coil of the car, such as noise, there is an advantage that can be accurately labeled.
Description
제1도는 본 고안의 회로구성 블록도,1 is a circuit block diagram of the present invention,
제2도는 본 고안의 일부 회로도,2 is a partial circuit diagram of the present invention,
제3도는 종래의 엔진 회전수검출표시장치의 회로구성 블록도,3 is a circuit block diagram of a conventional engine speed detection display device;
제4도는 종래의 엔진 회전수검출표시장치의 일부 회로도,4 is a partial circuit diagram of a conventional engine speed detection display device;
제5도는 종래의 엔진 회전수검출표시장치의 엔진회전수 대 전압신호(Vp-p)의 그래프,5 is a graph of engine speed vs. voltage signal Vp-p of the conventional engine speed detection display device.
제6도는 통상적인 엔진 회전수검출센서의 일례를 나타낸 사시도,6 is a perspective view showing an example of a conventional engine speed detection sensor,
제7도는 제6도의 엔진 회전수검출센서의 감지신호 파형도이다.FIG. 7 is a waveform diagram of detection signals of the engine speed detection sensor of FIG.
〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
1 : 입력병렬공진회로 1-1 : 콘덴서1: Input Parallel Resonance Circuit 1-1: Condenser
1-2 : 저항 10 : 저역통과필터1-2: Resistance 10: Low Pass Filter
20 : 고역통과필터 30 : 슈미트트리거20: high pass filter 30: Schmitt trigger
40 : 회전수구동장치 50 : 회전수표시장치40: rotation speed drive device 50: rotation speed display device
본 고안은 자동차용 디젤엔진 회전수검출표시장치에 관한 것으로 더욱 구체적으로는 마그넷 픽업 센서를 사용한 형태로서 입력잡음에 의한 지침떨림을 방지하도록 그 입력측에 입력병렬공진회로가 직렬접속된 자동차용 디젤엔진 회전수검출표시장치에 관한 것이다.The present invention relates to a diesel engine speed detection display device for automobiles. More specifically, a magnet pickup sensor is used, and a diesel engine for automobiles having an input parallel resonant circuit connected in series to the input side to prevent guide vibration caused by input noise. A revolution detection display device.
통상적인 엔진 회전수검출센서의 일례(60)는 제 6 도에 나타낸 바와 같이 크랭크샤프트(70)에 저성체 재질의 로터(63)를 장착하고, 이 로터(63)의 원주를 치형으로 구성하여 공극(66)을 두고 영구자석(61)과 대향하도록 배치한 구조이며, 영구자석(61)에는 코일(62)이 감겨져 있으므로 로터(63)가 회전하면 코일(62)을 통하는 자속의 크기가 변하고 양단에는 교류전압이 발생한다. 이때 교류전압의 주파수는 치수에 비례하므로 주파수를 계측함으로써 회전수를 검출할 수 있는 것이다.As shown in FIG. 6, an example 60 of a conventional engine speed detection sensor includes a rotor 63 made of a low-margin material on a crankshaft 70, and the circumference of the rotor 63 is configured as a tooth shape. The cavity 66 is disposed to face the permanent magnet 61. The coil 62 is wound around the permanent magnet 61. As the rotor 63 rotates, the magnitude of the magnetic flux through the coil 62 changes. AC voltage is generated at both ends. At this time, since the frequency of the AC voltage is proportional to the dimensions, the number of revolutions can be detected by measuring the frequency.
상기 엔진 회전수검출센서(60)의 감지신호는 그 후단에 연결된 신호처리회로(80)로 입력되며 (제 6 도 참조), 제 7 도는 로터(63)의 회전속도에 따라 회전수출검출센서(60)에서 검출되는 감지신호의 파형을 보인다.The detection signal of the engine speed detection sensor 60 is input to the signal processing circuit 80 connected to the rear end thereof (see FIG. 6), and FIG. 7 shows the rotation export detection sensor according to the rotation speed of the rotor 63. 60 shows the waveform of the detected signal detected.
종래에는 자동차용 디젤엔진 회전수검출표시장치의 회로부가 제 3 도에 나타낸 바와 같이 마그넷 픽업 센서 등 엔진 회전수검출센서의 신호성분 중 저주파 신호만을 통과시키기 위한 저역통과필터(110), 저역통과필터(110)의 출력에 연결되어 고주파 신호만을 통과시키기 위한 고역통과필터(120), 고역통과필터(120)의 출력파형을 입력하여 펄스파형으로 정형하여 주기 위한 슈미트트리거(130), 슈미트트리거(130)의 출력에 연결되어 그 후단의 표시장치에 적합한 신호로 변환해주기 위한 회전수구동장치(140), 회전수구동장치(140)의 출력을 입력하여 회전수를 표시하기 위한 회전수표시장치(150)로 구성된다.Conventionally, as shown in FIG. 3, a low pass filter 110 and a low pass filter for passing only a low frequency signal among signal components of an engine speed detection sensor such as a magnet pickup sensor, as shown in FIG. 3. Schmitt trigger 130, Schmitt trigger 130 for inputting the output waveform of the high pass filter 120, the high pass filter 120 to form a pulse waveform connected to the output of the 110 to pass only the high frequency signal Rotation speed display device 150 for inputting the output of the rotation speed drive device 140 and the rotation speed drive device 140 for converting the signal into a signal suitable for the display device at the rear end thereof; It is composed of
이 회로구성에서 입력필터는 제 4 도에 나타낸 바와 같이 저역통과필터(110)와 고역통과필터(120)의 혼합형 필터로서 엔진의 낮은 회전수에서 높은 회전수에 상당하는 주파수만을 이용하도록 이루어져 있다.In this circuit configuration, as shown in FIG. 4, the input filter is a mixed filter of the low pass filter 110 and the high pass filter 120, and is configured to use only the frequency corresponding to the low to high rotational speed of the engine.
제 4 도를 참조하여 고역통과필터(120), 저역통과필터(110) 및 슈미트트리거(130)의 동작을 설명하면 직렬연결된 콘덴서(121)와 저항(122)으로 이루어진 고역통과필터(120)는 입력주파수가 높을 경우 콘덴서(121)의 용량 리액턴스(XC=1/ω·C)가 작아서 전단의 신호가 거의 그대로 후단에 나타나며, 주파수가 작아지면 용량 리액턴스가 증가하여 출력신호의 진폭은 감쇄하고, 직류에 대해서는의 용량 리액턴스를 나타내어 개방회로로서 동작한다. 따라서, 콘덴서(121)를 '직류저지콘덴서'라 한다.Referring to FIG. 4, the operation of the high pass filter 120, the low pass filter 110, and the Schmitt trigger 130 will be described. The high pass filter 120 including the condenser 121 and the resistor 122 connected in series may be described. If the input frequency is high, the capacitance reactance (X C = 1 / ω · C) of the condenser 121 is small, so that the signal at the front end appears almost as it is, and when the frequency decreases, the capacitance reactance increases to attenuate the amplitude of the output signal. For DC It exhibits a capacitance reactance of and operates as an open circuit. Therefore, the capacitor 121 is called a "DC blocking capacitor."
직류적으로 분류시키기 위한 결합회로의 역할도 하도록 직렬연결된 콘덴서(111)와 저항(112)으로 이루어진 저역통과필터(110)는 저주파 신호는 통과시키거나 고주파 신호는 감쇄시킨다. 이는 콘덴서(111)의 용량 리액턴스(XC=1/ω·C)가 주파수에 따라 낮아지기 때문에 높은 주파수에서는 콘덴서(111)가 단락상태가 되어 출력을 '영(Zero)'으로 떨어뜨린다.The low pass filter 110, which consists of a capacitor 111 and a resistor 112 connected in series so as to act as a coupling circuit for classifying DC, passes a low frequency signal or attenuates a high frequency signal. Since the capacitance reactance (X C = 1 / ω · C) of the capacitor 111 decreases with frequency, at a high frequency, the capacitor 111 is short-circuited and the output drops to zero.
이와 같이 필요한 주파수 범위만의 신호를 비교기(131)로 비교하여 그 출력을 회전수구동장치(140)에 입력신호로 인가한다.In this way, the signal of only the required frequency range is compared with the comparator 131, and its output is applied to the rotational speed drive device 140 as an input signal.
상기처럼 회로를 구성할 때에는 제 5 도에 나타낸 바와 같이 입력조건이 정형파로서 엔진회전수가 낮으면 전압이 작고, 회전수가 빨라지면 전압이 커지게 되므로 비교기(131)의 기준전압을 접지로 잡는다. 이때, 전원 또는 혼(Horn) 잡음 등 외부잡음에 의하여 엔진 회전수 지침에 변화가 발생하는 바, 비교기(131)의 기준전압을 높게 하면 저속을 표지하지 않으며, 또한 시상수(RC)를 변화시키면 고속을 지시하지 않는 성능상의 결함이 발생하는 것이다.As shown in FIG. 5, when the circuit is configured as described above, the reference voltage of the comparator 131 is set to ground because the input condition is a square wave and the voltage is low when the engine speed is low and the voltage is increased when the speed is fast. At this time, a change occurs in the engine speed guide due to external noise such as power supply or horn noise. When the reference voltage of the comparator 131 is increased, the low speed is not indicated, and when the time constant RC is changed, There is a performance defect that does not indicate.
본 고안은 이들 문제점을 해결하도록 안출된 것으로 자동차용 디젤엔진 회전수검출표시장치에 있어서, 회전수검출표시장치의 회로입력측에 입력잡음에 의한 회전수표시장치의 지침떨림을 방지하도록 그 회로의 입력측에 저항과 콘덴서를 병렬연결한 입력병렬공진회로를 연결한 회로구성을 갖는 자동차용 디젤엔진 회전수검출표시장치를 제공함에 그 목적이 있다.The present invention has been devised to solve these problems, and in the diesel engine speed detection display device for automobiles, the input side of the circuit to prevent the guide vibration of the speed display device by input noise on the circuit input side of the speed detection display device. It is an object of the present invention to provide a diesel engine speed detection display device having a circuit structure in which an input parallel resonance circuit in which a resistor and a capacitor are connected in parallel.
이하, 본 고안을 첨부한 도면에 의하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 고안은 제 1 도에 나타낸 바와 같이 마그넷 픽업 센서 등 엔진 회전수검출센서의 출력에 연결되어 입력잡음에 의한 지침떨림을 방지하기 위한 입력병렬공진회로(1), 입력병렬공진회로(1)의 출력에 연결되어 고주파 신호만을 통과시키는 고역통과필터(20), 고역통과필터(20)의 출력에 연결되어 저주파 신호만을 통과시키는 저역통과필터(10), 저역통과필터(10)의 출력파형을 입력하여 펄스파형으로 정형해 주기 위한 슈미트트리거(30), 슈미트트리거(30)의 출력에 연결되어 그 후단의 표시장치에 적합한 신호로 변환해주기 위한 회전수구동장치(40), 회전수구동장치(40)의 출력을 입력하여 회전수를 표시하기 위한 회전수표시장치(50)로 구성된다.The present invention is connected to the output of the engine speed detection sensor, such as a magnet pickup sensor, as shown in FIG. 1, the input parallel resonant circuit (1) of the input parallel resonant circuit (1) for preventing the guide vibration caused by the input noise A high pass filter 20 connected to an output to pass only a high frequency signal, a low pass filter 10 to pass only a low frequency signal connected to an output of the high pass filter 20, and an output waveform of the low pass filter 10 is input. To the output of the Schmitt trigger 30 and the Schmitt trigger 30 for shaping the pulse waveform, and to convert the signal to a signal suitable for the display device of the rear stage, the speed drive device 40, the speed drive device (40 It is composed of a rotation speed display device 50 for displaying the rotation speed by inputting the output.
제 2 도에서 미설명부호 21, 22는 고역통과필터(20)의 콘덴서, 저항을 나타내고, 미설명부호 11, 12는 저역통과필터(10)의 콘덴서, 저항을 나타내며, 31은 비교기를 나타낸다.In FIG. 2, reference numerals 21 and 22 denote capacitors and resistors of the high pass filter 20, reference numerals 11 and 12 denote capacitors and resistances of the low pass filter 10, and 31 denote comparators.
따라서, 엔진 회전수검출표시장치의 회로 입력측에 저항(1-2)과 콘덴서(1-1)를 병렬 연결한 입력병렬공진회로(1)를 접속함으로써 에너지원이 작은 잡음에 대하여 저항(1-2)이 부하로 작용하여 이 잡음을 상쇄해주고, 고역통과필터(20)와 저역통과필터(10)를 거치는 동안에 합당한 디젤엔진의 저속 회전수 또는 고속 회전수 신호만을 통과시키며, 슈미트트리거(30)에서 이 회전수 신호를 펄스파형으로 정형해주며, 이 슈미트트리거(30)의 출력 펄스신호는 회전수구동장치(40)에서 그 후단의 표시장치에 적합한 신호로 변환되어서 회전수를 표시하기 위한 회전수표시장치(50)에 가시적으로 출력되는 바, 결과적으로 입력측의 입력병렬공진회로(1)로 인하여 입력잡음에 의한 회전수표시장치(50)의 지침떨림을 방지가능한 것이다.Accordingly, by connecting the input parallel resonant circuit 1 in which the resistor 1-2 and the capacitor 1-1 are connected in parallel to the circuit input side of the engine speed detection display device, the resistance (1-1) is reduced against noise having a small energy source. 2) acts as a load to cancel this noise, and passes only the low speed or high speed signal of a suitable diesel engine while passing through the high pass filter 20 and the low pass filter 10, and the Schmitt trigger 30 This rotational speed signal is shaped into a pulse waveform, and the output pulse signal of the Schmitt trigger 30 is converted into a signal suitable for the display device at a later stage by the rotational speed drive device 40 to display the rotational speed. It is visually output to the water display device 50, and as a result, it is possible to prevent the guide vibration of the rotation speed display device 50 due to input noise due to the input parallel resonant circuit 1 on the input side.
본 고안의 다른 실시예를 설명하면 다음과 같다.Another embodiment of the present invention is described as follows.
본 고안의 다른 실시예는 자동차용 디젤엔진의 회전수 검출센서로 마그넷 픽업 센서를 사용하는데 이 센서는 정현파를 출력하며, 제 5 도에 나타낸 바와 같이 엔진회전수에 비례하여 주파수 및 피크 대 피크 전압(Vp-p)이 변화된다. 이 신호의 주파수를 제어회로를 통과시켜서 잡음을 제거하고, 그 회전수를 판별하기 위하여 주파수/전압 변환회로에서 전압으로 변환하여 교차코일형 계기를 구동하기 위한 제어신호를 발생시켜서 회전수를 표시하는 것이다.Another embodiment of the present invention uses a magnet pick-up sensor as a speed detection sensor for a diesel engine for automobiles, which outputs a sine wave, and as shown in FIG. 5, a frequency and a peak-to-peak voltage in proportion to the engine speed. (Vp-p) is changed. The frequency of the signal is passed through the control circuit to remove noise, and the frequency / voltage conversion circuit converts the voltage to generate a control signal for driving the cross-coil type instrument to determine the rotational speed and displays the rotational speed. will be.
이상과 같이 본 고안은 기존의 자동차용 디젤엔진 회전수검출표시장치의 회로에 있어서, 그 입력측에 저항(1-2)과 콘덴서(1-1)를 병렬연결하여 이루어진 입력병렬공진회로(1)를 연결해줌으로써 혼(Horn) 잡음, 와이퍼 잡음 등 자동차의 코일조작에 의한 외부잡음을 제거가능하므로 정확한 지짐의 표지가 가능한 이점이 있는 것이다.As described above, the present invention is an input parallel resonant circuit (1) in which a resistor (1-2) and a capacitor (1-1) are connected in parallel to a circuit of a conventional diesel engine speed detection display device. By connecting, it is possible to remove the external noise by the coil operation of the car, such as horn noise, wiper noise, so that there is an advantage that it is possible to accurately mark the bearing.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940038893U KR200162510Y1 (en) | 1994-12-30 | 1994-12-30 | Display device of detecting of revolution of diesel engine for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940038893U KR200162510Y1 (en) | 1994-12-30 | 1994-12-30 | Display device of detecting of revolution of diesel engine for vehicle |
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| Publication Number | Publication Date |
|---|---|
| KR960021316U KR960021316U (en) | 1996-07-18 |
| KR200162510Y1 true KR200162510Y1 (en) | 1999-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940038893U KR200162510Y1 (en) | 1994-12-30 | 1994-12-30 | Display device of detecting of revolution of diesel engine for vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000007012A (en) * | 1999-11-19 | 2000-02-07 | 이준영 | RPM determination device of engine |
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1994
- 1994-12-30 KR KR2019940038893U patent/KR200162510Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000007012A (en) * | 1999-11-19 | 2000-02-07 | 이준영 | RPM determination device of engine |
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| KR960021316U (en) | 1996-07-18 |
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