KR100396846B1 - Method for finding connection troubles by measuring relative voltage between two points using multichannel scanner in examining defect of vehicle - Google Patents
Method for finding connection troubles by measuring relative voltage between two points using multichannel scanner in examining defect of vehicle Download PDFInfo
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- KR100396846B1 KR100396846B1 KR10-2001-0010894A KR20010010894A KR100396846B1 KR 100396846 B1 KR100396846 B1 KR 100396846B1 KR 20010010894 A KR20010010894 A KR 20010010894A KR 100396846 B1 KR100396846 B1 KR 100396846B1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
본 발명은 다수의 측정지점들사이의 선간전압인 상대전압을 측정하여 접속이상유무를 동시에 판단할 수 있는 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법을 개시한다. 본 발명에 따른 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법은 다수의 전압측정 채널을 보유하는 다채널 진단장비의 상기 다수의 전압측정 채널간의 접지선이 500㏀이상의 절연저항을 갖게 하는 단계와; 다채널 진단장비의 다수의 측정 프로브쌍을 다수의 측정 프로브의 개수에 대응하는 개수만큼 다수의 측정지점사이에 접속하는 단계와; 다수의 측정지점사이의 상대전압을 동시에 측정하는 단계와; 측정된 상대전압에 의하여 다수의 측정지점사이의 접속의 이상유무를 동시에 판단하는 단계로 이루어져 있다. 본 발명에 따라, 다수의 측정지점들사이의 접속이상유무를 동시에 판단할 수 있어 고장진단이 종래보다 30배이상으로 현저히 빨라지는 효과가 있다.The present invention discloses a method for determining whether there is a connection failure by measuring a relative voltage, which is a line voltage between a plurality of measurement points, and determining a connection failure at the same time. In the method of determining whether there is a connection failure by measuring a relative voltage of a multi-channel diagnostic apparatus according to the present invention, a ground line between the plurality of voltage-measuring channels of a multi-channel diagnostic apparatus having a plurality of voltage measuring channels has an insulation resistance of 500 kV or more. Making a step; Connecting the plurality of measurement probe pairs of the multi-channel diagnostic apparatus between the plurality of measurement points by the number corresponding to the number of the plurality of measurement probes; Simultaneously measuring relative voltages between the plurality of measurement points; At the same time, it is determined whether there is an abnormality in the connection between the plurality of measurement points based on the measured relative voltages. According to the present invention, it is possible to determine whether there is a connection failure between a plurality of measurement points at the same time, the effect of the diagnosis is significantly faster than 30 times more than conventional.
Description
본 발명은 자동차의 고장진단방법에 관한 것으로, 보다 상세히는 자동차 고장진단을 위하여 다수의 측정지점들사이의 선간전압인 상대전압을 측정하여 접속이상유무를 동시에 판단할 수 있는 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법에 관한 것이다.The present invention relates to a method for diagnosing a failure of a vehicle, and more particularly, to measure a relative voltage, which is a line voltage between a plurality of measurement points, for a vehicle failure diagnosis. The present invention relates to a method for determining whether there is a connection error by measuring voltage.
전자제어방식의 엔진을 갖는 자동차의 고장은 ECU의 다양한 입력과 출력을 구성하는 각종 센서 및 액츄에이터등에서 발생한다. 자동차 고장의 원인을 확인하기 위하여 각종 센서 및 액츄에이터등의 이상유무를 판단하며, 그 판단근거의 하나의 예로서 전압을 측정한다. 이와 같은 전압의 측정은 전압측정기의 일측 (-)프로브의 끝단은 접지에 접촉시키고, 타측 (+)프로브의 끝단은 측정하고자 하는 측정지점에 접촉시키는 절대평가 측정방식에 의하고 있다.The failure of a vehicle with an electronically controlled engine occurs at various sensors and actuators that constitute various inputs and outputs of the ECU. In order to check the cause of the car breakdown, it is judged whether there are any abnormalities such as various sensors and actuators, and the voltage is measured as an example of the basis of the judgment. This voltage measurement is based on an absolute evaluation method in which the end of one (-) probe of the voltage meter is in contact with the ground and the end of the other (+) probe is in contact with the measurement point to be measured.
도 1a와 도 1b를 참조하면, 도 1a는 스위치(1)의 이상여부를 진단하기 위하여 두 프로브사이에 전구(10) 개재시켜 두 측정지점사이의 절대전압을 측정하는 것이며, 도 1b는 디지털 멀티메터(20)에 의하여 두 측정지점사이의 절대전압을 측정하는 것을 나타낸다. 도 1a에 같은 측정방식에 의하면, 두 측정지점사이가 완전히 끊어진 경우에는 전구에 불이 들어오지 않으므로 측정이 가능하고, 접촉이 매우 불량하면 전구가 어두워지므로 측정이 가능하다. 그러나, 도 1a의 경우에 있어서 접촉이 조금만 불량할 때에는 전구불의 밝기로는 접속의 불량여부를 알 수가 없다.이에 따라, 실제의 정비현장에서는 작은 접속불량의 인한 엔진의 부조 또는 연비악화로 인한 유해배기가스 감소등의 진단에 오류를 범하게 된다. 한편, 도 1b와 같이 디지털 멀티메터(10)로 측정하여도 릴레이(3) 양단의 전압만 측정되고 작은 저항(5)의 양단전압은 무시되는 커다란 잘못이 있다.Referring to FIGS. 1A and 1B, FIG. 1A measures an absolute voltage between two measurement points by interposing a light bulb 10 between two probes to diagnose an abnormality of the switch 1, and FIG. Indicate the measurement of the absolute voltage between the two measuring points by the meter (20). According to the same measuring method as in FIG. 1A, when the two measuring points are completely disconnected, the bulb is not lit, and the measurement is possible because the bulb is dark when the contact is very poor. However, in the case of Fig. 1A, when the contact is only slightly poor, the brightness of the bulb light does not indicate whether the connection is poor. Mistakes can be made in diagnosing emissions, etc On the other hand, even when measured by the digital multimeter 10 as shown in Figure 1b there is a large error that only the voltage across the relay 3 is measured and the voltage across the small resistor 5 is ignored.
다음으로 도 2를 참조하면, 종래에 있어서 다채널을 갖는 진단장비(30)의 경우에는 접지(7)에 대한 절대전압의 측정은 가능하나, 도시되어 있는 바와 같이, 진단장비의 제1 채널의 제1 (-)프로브(32a)와 제1 (+)프로브(32b)에 의한 두 측정지점(A,B)의 상대전압의 측정과 제2 채널의 제2 (-)프로브(34a)와 제2 (+)프로브Next, referring to FIG. 2, in the case of the diagnostic apparatus 30 having multiple channels in the related art, the absolute voltage of the ground 7 may be measured. However, as shown in FIG. Measurement of the relative voltage at the two measuring points A and B by the first (-) probe 32a and the first (+) probe 32b and the second (-) probe 34a and the second channel of the second channel. 2 (+) probe
(34b)에 의한 두 측정지점(C,D)의 상대전압의 측정이 동시에 실행되는 경우에는 공통접지를 사용하므로 제1 채널과 제2 채널의 접지프로브(32a, 34a)는 쇼트가 된다. 이에 따라, 도 2와 같은 회로의 상대전압 측정의 경우에는 진단장비가 파손되거나 피측정체에 화재가 발생하게 된다. 따라서, 다채널 진단장비임에도 불구하고 상대전압을 동시에 측정하게 되면 장비의 파손이 야기되므로 절대전압의 측정이외에는 상대전압을 측정할 수 없는 단점이 있으며, 이로 인하여 다채널 진단장비에 의한 상대전압의 측정은 절대적으로 금지하고 있다.When the measurement of the relative voltages of the two measurement points C and D by 34b is performed simultaneously, the common ground is used, so the ground probes 32a and 34a of the first and second channels are shorted. Accordingly, in the case of measuring the relative voltage of the circuit as shown in FIG. 2, the diagnostic equipment is damaged or a fire occurs on the object under test. Therefore, despite the fact that it is a multi-channel diagnostic equipment, if the relative voltage is measured at the same time, damage to the equipment may occur, so there is a disadvantage in that the relative voltage cannot be measured other than the absolute voltage measurement. Is absolutely forbidden.
따라서, 본 발명은 이와 같은 종래의 절대전압측정과 다채널 진단장비에 의한 상대전압의 측정불능의 문제점들을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 다수의 측정지점들사이의 접속이상유무를 동시에 판단할 수 있는 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법을 제공함에 있다.Therefore, the present invention has been made to solve the problems of the conventional absolute voltage measurement and the inability to measure the relative voltage by the multi-channel diagnostic equipment, the object of the present invention is to determine whether there is a connection failure between a plurality of measurement points The present invention provides a method for determining whether there is a connection error by measuring a relative voltage of a multi-channel diagnostic device that can be determined at the same time.
도 1a와 도 1b는 종래의 절대전압 측정방식의 예들을 나타내는 회로도,1A and 1B are circuit diagrams showing examples of a conventional absolute voltage measuring method;
도 2는 다채널 진단장비에 의한 종래의 절대전압측정의 예를 나타내는 회로도,2 is a circuit diagram showing an example of a conventional absolute voltage measurement by the multi-channel diagnostic equipment,
도 3a와 도 3b는 본 발명에 적용되는 상대전압인 선간전압의 측정예들을 나타내는 회로도,3A and 3B are circuit diagrams illustrating measurement examples of line voltage, which is a relative voltage applied to the present invention;
도 4a 내지 도 4c는 본 발명에 적용되는 상대전압의 개념을 설명하기 위하여 나타낸 회로도,4A to 4C are circuit diagrams for explaining the concept of a relative voltage applied to the present invention;
도 5는 본 발명에 사용되는 다채널 측정장치를 나타내는 구성도,5 is a block diagram showing a multi-channel measuring device used in the present invention,
도 6은 본 발명이 적용되는 실제 측정예를 나타내는 회로도,6 is a circuit diagram showing an actual measurement example to which the present invention is applied;
도 7은 본 발명에 따른 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법의 흐름도이다.7 is a flowchart illustrating a method for determining whether there is a connection failure by measuring a relative voltage of a multi-channel diagnostic apparatus according to the present invention.
이와 같은 목적을 달성하기 위하여 본 발명에 따른 자동차 고장진단을 위한 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법은 다수의 전압측정 채널을 보유하는 다채널 진단장비의 상기 다수의 전압측정 채널간의 접지선이 500㏀이상의 절연저항을 갖게 하는 단계와; 다채널 진단장비의 다수의 측정 프로브쌍을 다수의 측정 프로브의 개수에 대응하는 개수만큼 다수의 측정지점사이에 접속하는 단계와; 다수의 측정지점사이의 상대전압을 동시에 측정하는 단계와; 측정된 상대전압에 의하여 다수의 측정지점사이의 접속의 이상유무를 동시에 판단하는 단계로 이루어져 있다.In order to achieve the above object, the method of determining whether there is a connection failure by measuring the relative voltage of the multi-channel diagnostic equipment for vehicle failure diagnosis according to the present invention includes the plurality of voltages of the multi-channel diagnostic equipment having a plurality of voltage measuring channels. Making the ground wire between the measurement channels have an insulation resistance of 500 kV or more; Connecting the plurality of measurement probe pairs of the multi-channel diagnostic apparatus between the plurality of measurement points by the number corresponding to the number of the plurality of measurement probes; Simultaneously measuring relative voltages between the plurality of measurement points; At the same time, it is determined whether there is an abnormality in the connection between the plurality of measurement points based on the measured relative voltages.
이하, 본 발명에 따른 자동차 고장진단을 위한 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법의 실시예를 첨부한 도면을 참고로 하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings an embodiment of a method for determining whether there is a connection failure by measuring the relative voltage of the multi-channel diagnostic equipment for vehicle failure diagnosis according to the present invention will be described in detail.
우선, 본 발명에 적용되는 적용되는 상대전압인 선간전압의 측정예들과 상대전압의 개념을 설명한다. 도 3a는 도 1b에 대응되는 도면으로 도시되어 있는 바와 같이, 선간전압인 상대전압은 두 측정지점(A1, A2)간의 전압차이로 이와 같은 측정으로 저항(5)의 양단의 작은 전압(디지털 멀티메타(20)에 의하여 1V의 전압차이가 있음이 측정됨)을 검출할 수 있으므로 매우 정밀한 점검이 수행된다. 도 3a와 같은 상대전압의 측정은 도 3b와 같이, 모든 두 측정지점들(B1, B2; C1, C2)간의 상대전압(V1=0.8V; V2=3V)이 측정된다.First, the measurement examples of the line voltage, which is the relative voltage applied to the present invention, and the concept of the relative voltage will be described. 3A is a diagram corresponding to FIG. 1B, the relative voltage, which is the line voltage, is a voltage difference between two measurement points A1 and A2. As a result, a small voltage across the resistor 5 (digital multi A very precise check is performed since it is possible to detect that there is a voltage difference of 1 V by the meta 20. In the measurement of the relative voltage as shown in FIG. 3A, as shown in FIG. 3B, the relative voltage (V1 = 0.8V; V2 = 3V) between all two measurement points B1, B2; C1 and C2 is measured.
도 4a 내지 도 4c를 참고하여 상대전압개념과 상대전압측정의 중요성을 설명한다. 도 4b를 참조하면, 도 4b의 회로에서 스위치를 ON시키는 경우 이 회로에는 전류가 흐르게 된다. 이 때 배터리(+)와 코일(+)사이의 전압(V1)을 측정하면 정상적인 연결에 비하여 그 사이에 저항이 있으므로 분명히 도 4a의 회로의 양단사이의 전압보다 0.6∼1.2V보다는 크게 나온다. 한편, 접지선 양단의 전압인 코일(-)와 배터리(-)사이의 전압(V2)은 0.8V가 나온다. 도 4a를 참조하면, 배터리(+)와 코일(+)사이에는 저항은 없으나 배터리(+)와 코일(+)사이에는 전선자체의 순도와 길이, 굵기등에 의하여 약간의 저항이 있으므로 대략 0.6V∼1.2V정도의 상대전압(V1)이 있다. 특별히 전류가 많이 흐르는 ABS 모터회로 또는 쿨링팬회로등과 또는 선간전압이 측정지점이 상당히 긴 배선을 갖는 배터리(+)와 연료펌프(+)사이의 상대전압은 3V정도까지 된다. 통상적으로 접속문제를 유발시키는 정도의 접속불량인 경우에는 상대전압이 최하 1.8V이상되며, 정상적인 접속일 때 상대전압이 3V인 긴배선 또는 대전류가 흐르는 선간전압인 경우에는 5V이상 걸린다. 따라서, 측정대상의 양단지점사이의 선간전압인 상대전압을 측정함으로써 회로의 모든 접속이상유무가 일시에 해소된다. 도 4c를 참조하면, 회로가 끊어진 양단의 전압(V3)은 12V이다. 이에 따르면, 결국 동일한 배선의 선간전압이 배터리(+)의 전압과 같은 12V가 나오면 측정지점사이는 끊어진 것이고, 1.2V이하의 전압이 적절하게 나온다면, 접속이 정상적임을 알 수 있다. 따라서, 선간전압이 1.2V인 경우에는 스위치, 릴레이, 커넥터, TR등의 상태가 양호하며 이는 본선이거나 어스이거나 동일하게 적용되며, 만일 1.8V이상이 나오게 되면 그 사이의 어딘가가 접속불량이 있음으로 판정할 수 있다. 이상과 같은 상대전압의 측정개념을 이해하게 되면, ECU를 기준으로 하는 모든 출력부분과 모든 전장회로는 간단하게 진단될 수 있다.The relative voltage concept and the importance of the relative voltage measurement will be described with reference to FIGS. 4A to 4C. Referring to FIG. 4B, when the switch is turned ON in the circuit of FIG. 4B, a current flows in this circuit. At this time, if the voltage (V1) between the battery (+) and the coil (+) is measured, since there is a resistance between them compared to the normal connection, the voltage between the both ends of the circuit of Figure 4a is clearly greater than 0.6 ~ 1.2V. On the other hand, the voltage (V2) between the coil (-) and the battery (-) that is the voltage across the ground wire comes out 0.8V. Referring to FIG. 4A, there is no resistance between the battery (+) and the coil (+), but there is some resistance between the battery (+) and the coil (+) due to the purity, length, and thickness of the wire itself. There is a relative voltage (V1) of about 1.2V. In particular, the relative voltage between the battery (+) and the fuel pump (+), which has a large current, such as an ABS motor circuit, a cooling fan circuit, or a wire with a very long measuring point between the lines, is up to 3V. Generally, the relative voltage is at least 1.8V when the connection is bad enough to cause a connection problem, and when it is a normal connection, it takes 5V or more when the long wiring is 3V or the line voltage through which a large current flows. Therefore, by measuring the relative voltage which is the line voltage between the both ends of a measurement object, all the abnormality of a circuit connection are eliminated at once. Referring to FIG. 4C, the voltage V3 at both ends of the circuit disconnection is 12V. According to this, when the line voltage of the same wiring is 12V equal to the voltage of the battery (+), it is disconnected between the measuring points, and if the voltage of 1.2V or less is appropriate, it can be seen that the connection is normal. Therefore, if the line voltage is 1.2V, the status of switches, relays, connectors, TR, etc. is good, and this is the same as the mains, earth, or the same. If more than 1.8V comes out, there is a connection failure between them. It can be determined. Understanding the relative voltage measurement concept as described above makes it easy to diagnose all the output parts and all the electric circuits based on the ECU.
다음으로, 도 5를 설명한다. 도 5는 본 발명에 적용되는 상대전압개념을 적용할 수 있는 다채널 진단장비의 원리를 나타낸다. 다채널 진단장비의 각 채널의 접지선사이는 접지를 분리하여 쇼트를 방지하기 위하여 도 2와 반드시 500㏀이상의, 바람직하게는 1㏁이상의, 절연저항을 갖게 한다. 도면에는 저항기(40)로 측정한 결과 접지선사이가 500㏀이상임을 나타내고 있다.Next, Fig. 5 will be described. 5 shows the principle of a multi-channel diagnostic apparatus to which the relative voltage concept applied to the present invention can be applied. In order to prevent the short circuit by disconnecting the ground between the ground wires of each channel of the multi-channel diagnostic equipment to have an insulation resistance of 500 kV or more, preferably 1 kV or more. The figure shows that the ground wire is 500 mV or more as measured by the resistor 40.
도 6은 다채널의 진단장비에 의하여 상대전압이 동시에 측정되는 실제예를 나타내고 있다. 도 6은 배터리(50), 스타팅모터(60), 플라이휘일(64)의 기본적인 구성을 나타내는 것으로, 도면에서 도면번호 52는 스타팅스위치, 62는 클러치하우징을 나타내며, 60a는 스타팅단자, 60b는 모터단자, 60c는 배터리단자를 나타낸다. 도면에서 ①로 표시한 배터리(+)와 스타팅단자(60a)사이의 상대전압과 ②로 표시한 배터리(+)와 모터단자(60b)사이의 상대전압과 ③으로 표시한 배터리(-)와 모터플랜지사이의 상대전압이 다채널 진단장비의 측정프로브쌍에 의하여 동시에 측정될 수 있다. 상대전압(①)에 의하여 선간 스위치상태를 확인할 수 있고, 상대전압(②)에 의하여 +배터리케이블과 마그네트 스위치상태를 확인할 수 있으며, 상대전압(③)에 의하여 -배터리케이블의 상태 및 모터플랜지의 오염상태를 확인할 수 있다. 도 6과 같이 두 측정지점사이의 극히 작은 저항의 차이까지 선간전압이 발생되어 접속이상유무를 알 수 있으며 또한, 배선이나 면접촉의 오염상태, 배터리 터미널의 접속불량도 판단할 수 있다.6 shows an actual example in which the relative voltage is simultaneously measured by the multi-channel diagnostic equipment. Figure 6 shows the basic configuration of the battery 50, the starting motor 60, the flywheel 64, the reference numeral 52 is a starting switch, 62 represents a clutch housing, 60a is a starting terminal, 60b is a motor The terminal 60c represents a battery terminal. Relative voltage between battery (+) and starting terminal 60a indicated by ① in the figure, relative voltage between battery (+) and motor terminal 60b indicated by ② and battery (-) and motor indicated by ③ Relative voltages between flanges can be measured simultaneously by pairs of measuring probes in multichannel diagnostic equipment. You can check the switch status between the lines by the relative voltage (①), you can check the + battery cable and magnet switch status by the relative voltage (②), and the status of the battery cable and the motor flange by the relative voltage (③). You can check the contamination status. As shown in FIG. 6, the voltage between lines is generated up to the difference of the resistance between the two measuring points, indicating whether there is a connection abnormality. Also, a contamination state of the wiring or the surface contact and a connection failure of the battery terminal can be determined.
이상과 같은 두 측정지점의 상대전압을 측정하여 접속이상유무를 판단하는본 발명에 따른 방법을 도 7에 의하여 정리하여 설명한다. 먼저, 다채널 진단장비가 전압측정 채널간의 접지선이 500㏀이상의 절연저항을 갖도록 한다(S10). 이러한 진단장비의 다수의 측정프로브쌍을 측정대상의 측정지점들 사이에 접속하면(S20), 측정지점들사이의 상대전압들이 동시에 측정된다(S30). 측정된 상대전압들에 의하여 정상적인 상태에서의 상대전압값과 접속불량인 상태에서의 상대전압값에 의하여 측정지점들 사이의 접속이상유무가 동시에 판단될 수 있다(S40).The method according to the present invention for measuring the relative voltages of the two measurement points as described above to determine the presence of a connection failure will be described collectively with reference to FIG. First, the multi-channel diagnostic equipment allows the ground wire between the voltage measuring channels to have an insulation resistance of 500 kΩ or more (S10). When a plurality of measurement probe pairs of the diagnostic equipment are connected between the measurement points of the measurement target (S20), the relative voltages between the measurement points are simultaneously measured (S30). Based on the measured relative voltages, it is possible to simultaneously determine whether there is a connection failure between the measurement points based on the relative voltage value in a normal state and the relative voltage value in a poor connection state (S40).
이상은 본 발명의 실시예를 설명한 것이나, 본 발명의 보호범위가 상기 실시예들에만 한정되는 것이 아님은 물론이며, 상기한 실시예에서 나타낸 구체적인 구조나 표현은 본 발명에 있어서 구체화된 예시를 나타낸 것으로 상기한 실시예이외에도 특허청구범위내에서 다양하게 변경가능한 것이다.The foregoing has described the embodiments of the present invention, but the protection scope of the present invention is not limited to the above embodiments, of course, and the specific structures and expressions shown in the above-described embodiments represent the examples specified in the present invention. In addition to the above embodiments it will be variously changed within the scope of the claims.
이상에서 설명한 바와 같이, 본발명에 따른 다채널 진단장비의 상대전압측정에 의한 접속이상유무의 판단방법에 의하면 다수의 측정지점들사이의 접속이상유무를 동시에 판단할 수 있어 고장진단이 종래보다 30배이상으로 현저히 빨라지는 효과가 있으며, 궁극적으로는 자동차의 고장을 과학적이고 체계적으로 진단할 수 있게 된다.As described above, according to the method of determining whether there is a connection error by measuring the relative voltage of the multi-channel diagnostic equipment according to the present invention, it is possible to simultaneously determine whether there is a connection error between a plurality of measurement points, so that the failure diagnosis is more than 30 It is more than twice as fast, and ultimately it is possible to scientifically and systematically diagnose the failure of a car.
Claims (2)
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Cited By (2)
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| KR101387421B1 (en) | 2012-09-17 | 2014-04-22 | 카맨아이 주식회사 | Vehicle Analysis Apparatus Using Earth Level Signal |
| RU2799955C1 (en) * | 2023-03-06 | 2023-07-14 | Андрей Викторович Цыбаков | Scanner of active sensors of the anti-lock braking system |
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| JPS5990064A (en) * | 1983-07-15 | 1984-05-24 | Matsushita Electric Ind Co Ltd | Testing device of wiring |
| JPS60177275A (en) * | 1984-02-24 | 1985-09-11 | Matsushita Electric Works Ltd | Testing circuit for wiring continuity |
| JPS61245723A (en) * | 1985-04-24 | 1986-11-01 | Matsushita Electric Works Ltd | Tester for detecting mis-wiring of bus line |
| KR950019668A (en) * | 1993-12-14 | 1995-07-24 | 전성원 | Wiring inspection device for Lucas ABS |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101387421B1 (en) | 2012-09-17 | 2014-04-22 | 카맨아이 주식회사 | Vehicle Analysis Apparatus Using Earth Level Signal |
| RU2799955C1 (en) * | 2023-03-06 | 2023-07-14 | Андрей Викторович Цыбаков | Scanner of active sensors of the anti-lock braking system |
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