WO2021046931A1 - Non-contact handheld multi-station automobile high-voltage ignition coil fault detector - Google Patents

Non-contact handheld multi-station automobile high-voltage ignition coil fault detector Download PDF

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WO2021046931A1
WO2021046931A1 PCT/CN2019/108366 CN2019108366W WO2021046931A1 WO 2021046931 A1 WO2021046931 A1 WO 2021046931A1 CN 2019108366 W CN2019108366 W CN 2019108366W WO 2021046931 A1 WO2021046931 A1 WO 2021046931A1
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resistor
capacitor
ignition
chip
signal
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PCT/CN2019/108366
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French (fr)
Chinese (zh)
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张李桂
吴初莹
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福建省霞浦县景禾机电有限公司
张李桂
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Publication of WO2021046931A1 publication Critical patent/WO2021046931A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P2017/003—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using an inductive sensor, e.g. trigger tongs

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A non-contact handheld multi-station automobile high-voltage ignition coil fault detector, comprising a sensing antenna, an electromagnetic field signal amplification circuit, an ignition signal processing circuit, and a display circuit. An output end of the sensing antenna is connected to an input end of the electromagnetic field signal amplification circuit, and an output end of the electromagnetic field signal amplification circuit is connected to an input end of the ignition signal processing circuit. An output end of the ignition signal processing circuit is connected to an input end of the display circuit. The sensing antenna is used for sensing an electromagnetic field signal generated when the ignition coil is ignited. The non-contact handheld multi-station automobile high-voltage ignition coil fault detector facilitates a user to compare the displayed ignition signal detection data so as to determine the fault of the ignition coil, namely, non-contact rapid induction is adopted, and the ignition coil does not need to be disassembled, so that the ignition coil with abnormal work can be rapidly detected under the condition of saving time and cost.

Description

非接触手持式多工位汽车高压点火线圈故障探测仪Non-contact handheld multi-station automobile high-voltage ignition coil fault detector 技术领域Technical field
本发明涉及技术领域，特别涉及非接触手持式多工位汽车高压点火线圈故障探测仪。The invention relates to the technical field, in particular to a non-contact handheld multi-station automobile high-voltage ignition coil failure detector.
背景技术Background technique
在维修汽车过程中，经常要判断点火线圈是否工作异常。如果点火线圈工作异常，汽车仪表盘的故障灯会亮起，同时，由于汽车发动机是多个气缸，每个气缸都有一个点火线圈，即发动机上设置有多个点火线圈，在点火线圈出现工作异常时，部分汽车本身在电脑仪表盘也会显示故障部件为点火线圈，但也不能判断出是哪个点火线圈出现问题，因此无法准确判断故障位置。In the process of car repair, it is often necessary to judge whether the ignition coil is working abnormally. If the ignition coil works abnormally, the fault light of the car dashboard will light up. At the same time, because the car engine has multiple cylinders, each cylinder has an ignition coil, that is, there are multiple ignition coils on the engine, and the ignition coil works abnormally. At the time, some cars themselves will also display the faulty component as the ignition coil in the computer dashboard, but it is also impossible to determine which ignition coil has the problem, so it is impossible to accurately determine the location of the fault.
在现有技术中，通常是对工作异常的点火线圈进行整组更换或采用替换法，然而，替换法的耗时较长，整组更换的成本较高，无法满足同时节约时间和成本的维修需求。In the prior art, the entire set of ignition coils that work abnormally is usually replaced or the replacement method is used. However, the replacement method takes a long time and the cost of the entire set replacement is high, which cannot meet the maintenance requirements that save time and cost at the same time. demand.
技术问题technical problem
本发明所要解决的技术问题是：提供非接触手持式多工位汽车高压点火线圈故障探测仪，能够在节约时间和成本的情况下快速检测出工作异常的点火线圈。The technical problem to be solved by the present invention is to provide a non-contact hand-held multi-station automobile high-voltage ignition coil failure detector, which can quickly detect an abnormally working ignition coil while saving time and cost.
技术解决方案Technical solutions
为了解决上述技术问题，本发明采用的技术方案为：In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:
非接触手持式多工位汽车高压点火线圈故障探测仪，包括传感天线、电磁场信号放大电路、点火信号处理电路以及显示电路；Non-contact handheld multi-station automobile high-voltage ignition coil fault detector, including sensor antenna, electromagnetic field signal amplification circuit, ignition signal processing circuit and display circuit;
所述传感天线的输出端与所述电磁场信号放大电路的输入端连接，所述电磁场信号放大电路的输出端与所述点火信号处理电路的输入端连接，所述点火信号处理电路的输出端与所述显示电路的输入端连接；The output terminal of the sensing antenna is connected to the input terminal of the electromagnetic field signal amplifying circuit, the output terminal of the electromagnetic field signal amplifying circuit is connected to the input terminal of the ignition signal processing circuit, and the output terminal of the ignition signal processing circuit Connected with the input terminal of the display circuit;
所述传感天线用于感应点火线圈点火时的电磁场信号。The sensing antenna is used to induce electromagnetic field signals when the ignition coil is ignited.
有益效果Beneficial effect
本发明的有益效果在于：非接触手持式多工位汽车高压点火线圈故障探测仪，通过传感天线感应到汽车点火线圈点火的电磁场变化，再通过电磁场信号放大电路把点火的电磁场信号放大处理，通过点火信号处理电路对已放大的电磁场信号进行处理并转换成点火信号检测数据，然后通过显示电路显示，方便使用者通过显示的点火信号检测数据进行比对以便以判断点火线圈的故障所在，即采用非接触式的快速感应，无需对点火线圈进行任何拆卸，从而能够在节约时间和成本的情况下快速检测出工作异常的点火线圈。The beneficial effects of the present invention are: the non-contact handheld multi-station automobile high-voltage ignition coil fault detector detects the electromagnetic field change of the automobile ignition coil ignition through the sensing antenna, and then amplifies the ignition electromagnetic field signal through the electromagnetic field signal amplifier circuit. The amplified electromagnetic field signal is processed by the ignition signal processing circuit and converted into ignition signal detection data, and then displayed by the display circuit, so that the user can compare the displayed ignition signal detection data to determine the fault of the ignition coil, that is The use of non-contact rapid induction does not require any disassembly of the ignition coil, so that an abnormally working ignition coil can be quickly detected while saving time and cost.
附图说明Description of the drawings
图1为本发明实施例的非接触手持式多工位汽车高压点火线圈故障探测仪的框架示意图；FIG. 1 is a schematic diagram of the framework of a non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to an embodiment of the present invention;
图2为本发明实施例涉及的电源电路的具体电路示意图；2 is a schematic diagram of a specific circuit of a power supply circuit involved in an embodiment of the present invention;
图3为本发明实施例涉及的电磁场信号放大电路的具体电路示意图；3 is a schematic diagram of a specific circuit of an electromagnetic field signal amplifying circuit related to an embodiment of the present invention;
图4为本发明实施例涉及的信号分离电路、时间信号处理电路以及周期信号处理电路的具体电路示意图；4 is a schematic diagram of specific circuits of a signal separation circuit, a time signal processing circuit, and a periodic signal processing circuit involved in an embodiment of the present invention;
图5为本发明实施例涉及的电压信号处理电路的具体电路示意图。FIG. 5 is a specific circuit diagram of a voltage signal processing circuit involved in an embodiment of the present invention.
本发明的实施方式Embodiments of the present invention
为详细说明本发明的技术内容、所实现目的及效果，以下结合实施方式并配合附图予以说明。In order to describe in detail the technical content, the achieved objectives and effects of the present invention, the following description will be given in conjunction with the embodiments and the accompanying drawings.
请参照图1至图5所示，非接触手持式多工位汽车高压点火线圈故障探测仪，包括传感天线、电磁场信号放大电路、点火信号处理电路以及显示电路；Please refer to Figures 1 to 5, a non-contact handheld multi-station automobile high-voltage ignition coil fault detector, including a sensing antenna, an electromagnetic field signal amplification circuit, an ignition signal processing circuit, and a display circuit;
所述传感天线的输出端与所述电磁场信号放大电路的输入端连接，所述电磁场信号放大电路的输出端与所述点火信号处理电路的输入端连接，所述点火信号处理电路的输出端与所述显示电路的输入端连接；The output terminal of the sensing antenna is connected to the input terminal of the electromagnetic field signal amplifying circuit, the output terminal of the electromagnetic field signal amplifying circuit is connected to the input terminal of the ignition signal processing circuit, and the output terminal of the ignition signal processing circuit Connected with the input terminal of the display circuit;
所述传感天线用于感应点火线圈点火时的电磁场信号。The sensing antenna is used to induce electromagnetic field signals when the ignition coil is ignited.
从上述描述可知，本发明的有益效果在于：通过传感天线感应到汽车点火线圈点火的电磁场变化，再通过电磁场信号放大电路把点火的电磁场信号放大处理，通过点火信号处理电路对已放大的电磁场信号进行处理并转换成点火信号检测数据，然后通过显示电路显示，方便使用者通过显示的点火信号检测数据进行比对以便以判断点火线圈的故障所在，即采用非接触式的快速感应，无需对点火线圈进行任何拆卸，从而能够在节约时间和成本的情况下快速检测出工作异常的点火线圈。From the above description, the beneficial effects of the present invention are: the electromagnetic field change of the ignition coil of the car is induced by the sensor antenna, and then the electromagnetic field signal of the ignition is amplified and processed by the electromagnetic field signal amplifying circuit, and the amplified electromagnetic field is processed by the ignition signal processing circuit. The signal is processed and converted into ignition signal detection data, and then displayed by the display circuit, which is convenient for the user to compare the displayed ignition signal detection data to determine the fault of the ignition coil, that is, use non-contact rapid induction, no need to check Any disassembly of the ignition coil can quickly detect an abnormally working ignition coil while saving time and cost.
进一步地，所述信号处理电路包括主控制器、信号分离电路、电压信号处理电路、时间信号处理电路以及周期信号处理电路；Further, the signal processing circuit includes a main controller, a signal separation circuit, a voltage signal processing circuit, a time signal processing circuit, and a periodic signal processing circuit;
所述电磁场信号放大电路的输出端与所述信号分离电路的输入端连接，所述信号分离电路的三个输出端分别与电压信号处理电路的输入端、时间信号处理电路的输入端以及周期信号处理电路的输入端进行一一对应连接，所述电压信号处理电路的输出端、所述时间信号处理电路的输出端以及所述周期信号处理电路的输出端分别与所述主控制器的一个ADC通道连接。The output terminal of the electromagnetic field signal amplifying circuit is connected to the input terminal of the signal separation circuit, and the three output terminals of the signal separation circuit are respectively connected to the input terminal of the voltage signal processing circuit, the input terminal of the time signal processing circuit, and the periodic signal The input terminals of the processing circuit are connected in one-to-one correspondence. The output terminal of the voltage signal processing circuit, the output terminal of the time signal processing circuit, and the output terminal of the periodic signal processing circuit are respectively connected with an ADC of the main controller. Channel connection.
从上述描述可知，通过信号分离电路对已放大的电磁场信号进行分离，分离出三组信号并进行不同的处理，最后传输到主控制器中转化为数字信号并得到对应的测量值，即点火信号检测数据包括电压信号、时间信号以及周期信号，使得使用者能更加准确的判断故障所在。It can be seen from the above description that the amplified electromagnetic field signal is separated by the signal separation circuit, and three sets of signals are separated and processed differently. Finally, they are transmitted to the main controller and converted into digital signals to obtain the corresponding measured values, namely the ignition signal. The detection data includes voltage signals, time signals, and periodic signals, so that users can more accurately determine where the fault is.
进一步地，所述电磁场信号放大电路包括电阻R39、电容C22、电阻R45、电阻R44、芯片U2以及电阻R43；Further, the electromagnetic field signal amplifying circuit includes a resistor R39, a capacitor C22, a resistor R45, a resistor R44, a chip U2, and a resistor R43;
所述传感天线的输出端与所述电阻R39的一端连接，所述电阻R39的另一端与所述电容C22的一端连接，所述电容C22的另一端与所述电阻R45的一端连接，所述电阻R45的一端与所述电阻R44的另一端连接，所述电阻R44的另一端与芯片U2的第五引脚连接；The output end of the sensing antenna is connected to one end of the resistor R39, the other end of the resistor R39 is connected to one end of the capacitor C22, and the other end of the capacitor C22 is connected to one end of the resistor R45, so One end of the resistor R45 is connected to the other end of the resistor R44, and the other end of the resistor R44 is connected to the fifth pin of the chip U2;
所述芯片U2用于对所述第五引脚的输入信号进行运算放大，并从第七引脚输出已放大的电磁场信号。The chip U2 is used to perform operational amplification on the input signal of the fifth pin, and output the amplified electromagnetic field signal from the seventh pin.
从上述描述可知，在传感天线感应到高压点火的电磁场信号，通过电阻R39、电容C22进行耦合到电阻R45，经过电阻R44输入到芯片U2的第五引脚进行运算放大，放大后的点火电压信号经芯片U2的第七引脚输出，从而得到已放大的电磁场信号，保证在感应的电磁场信号很微小的情况下，后续电路也能进行处理。It can be seen from the above description that the high-voltage ignition electromagnetic field signal induced by the sensor antenna is coupled to the resistor R45 through the resistor R39 and the capacitor C22, and is input to the fifth pin of the chip U2 through the resistor R44 for operational amplification, and the amplified ignition voltage The signal is output through the seventh pin of the chip U2 to obtain an amplified electromagnetic field signal, which ensures that the subsequent circuit can also process the induced electromagnetic field signal even when the induced electromagnetic field signal is very small.
进一步地，所述信号分离电路包括电阻R52、电容C36、电容C25、电阻R53、电阻R48、电容C14、电容C13、电感L1以及电容C18；Further, the signal separation circuit includes a resistor R52, a capacitor C36, a capacitor C25, a resistor R53, a resistor R48, a capacitor C14, a capacitor C13, an inductor L1, and a capacitor C18;
所述电磁场信号放大电路的输出端与所述电阻R52的一端连接，所述电阻R52的另一端与所述电容C25的一端连接，所述电容C25的另一端与所述电阻R53的一端连接，所述电阻R53的另一端与所述电阻R48的一端连接，所述电阻R48的另一端与供电端连接，所述电阻R52与所述电容C25之间并联一个电容C36，所述电容C36的另一端接地，所述电阻R53与所述电阻R48之间并联一个点火时间信号输出端；The output end of the electromagnetic field signal amplifying circuit is connected to one end of the resistor R52, the other end of the resistor R52 is connected to one end of the capacitor C25, and the other end of the capacitor C25 is connected to one end of the resistor R53, The other end of the resistor R53 is connected to one end of the resistor R48, the other end of the resistor R48 is connected to the power supply end, a capacitor C36 is connected in parallel between the resistor R52 and the capacitor C25, and the other end of the capacitor C36 One end is grounded, and an ignition time signal output terminal is connected in parallel between the resistor R53 and the resistor R48;
所述电磁场信号放大电路的输出端同时与电容C14的一端连接，所述电容C14的另一端与所述电容C13的一端连接，所述电容C13的另一端与所述电感L1的一端连接，所述电感L1的另一端接地，所述电容C13与所述电感L1之间并联一个点火周期信息输出端；The output end of the electromagnetic field signal amplifying circuit is simultaneously connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is connected to one end of the inductor L1, so The other end of the inductor L1 is grounded, and an ignition cycle information output terminal is connected in parallel between the capacitor C13 and the inductor L1;
所述电容C13与所述电感L1之间与所述电容C18的一端连接，所述电容C18的另一端为点火电压信号输出端。The capacitor C13 and the inductor L1 are connected to one end of the capacitor C18, and the other end of the capacitor C18 is an ignition voltage signal output terminal.
从上述描述可知，对已放大的电磁场信号通过电阻R52、电容C36、电容C25、电阻R53、电阻R48分离出点火时间信号，通过电容C14、电容C13以及电感L1分离出点火周期信号，通过电容C14、电容C13、电感L1以及电路C18分离出点火电压信号，从而将已放大的电磁场信号分离成点火时间信号、点火周期信号以及点火电压信号，以得到更多与故障相关的点火信号检测数据。It can be seen from the above description that the amplified electromagnetic field signal is separated by resistor R52, capacitor C36, capacitor C25, resistor R53, resistor R48, and the ignition period signal is separated by capacitor C14, capacitor C13, and inductor L1, and the ignition period signal is separated by capacitor C14. , Capacitor C13, inductor L1 and circuit C18 separate the ignition voltage signal, thereby separating the amplified electromagnetic field signal into ignition time signal, ignition cycle signal and ignition voltage signal to obtain more ignition signal detection data related to the fault.
进一步地，所述电压信号处理电路包括芯片U4、二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1；Further, the voltage signal processing circuit includes a chip U4, a diode D1, a diode D2, a resistor R13, a resistor R15, a resistor R10, a resistor C3, a resistor R11, and a capacitor C1;
所述点火电压信号输出端与所述芯片U4的第三引脚连接，所述芯片U4的第五引脚同时与所述电容C3的一端、所述电阻R15的一端、所述电阻R13的一端、所述电阻R10的一端连接，所述电容C3的另一端与所述电阻R15的另一端接地，所述电阻R13的另一端与所述二极管D2的负端连接，所述二极管D2的正端与所述芯片U4的第一引脚连接，所述电阻R10的另一端与所述主控制器上的第一输入端连接；The ignition voltage signal output terminal is connected to the third pin of the chip U4, and the fifth pin of the chip U4 is simultaneously connected to one end of the capacitor C3, one end of the resistor R15, and one end of the resistor R13. One end of the resistor R10 is connected, the other end of the capacitor C3 is grounded to the other end of the resistor R15, the other end of the resistor R13 is connected to the negative end of the diode D2, and the positive end of the diode D2 Connected to the first pin of the chip U4, and the other end of the resistor R10 is connected to the first input terminal on the main controller;
所述芯片U4的第二引脚与所述电阻R11的一端连接，所述电阻R11的另一端同时与所述主控制器上的第二输入端、所述电容C1的一端连接，所述电容C1的另一端接地，所述芯片U4的第一引脚与所述二极管D2的负端连接，所述二极管D2的正端连接在所述电阻R11与所述芯片U4的第二引脚之间，所述芯片U4的第六引脚连接在所述芯片U4的第二引脚与所述电阻R11之间；The second pin of the chip U4 is connected to one end of the resistor R11, and the other end of the resistor R11 is simultaneously connected to the second input end of the main controller and one end of the capacitor C1. The other end of C1 is grounded, the first pin of the chip U4 is connected to the negative end of the diode D2, and the positive end of the diode D2 is connected between the resistor R11 and the second pin of the chip U4 , The sixth pin of the chip U4 is connected between the second pin of the chip U4 and the resistor R11;
所述芯片U4对所述点火电压信号输出端输入的点火电压信号进行放大，所述二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1对已放大的点火电压信号进行微分处理，已微分的所述点火电压信号传输至所述主控制器上的第一输入端与第二输入端上。The chip U4 amplifies the ignition voltage signal input from the ignition voltage signal output terminal. The diode D1, the diode D2, the resistor R13, the resistor R15, the resistor R10, the resistor C3, the resistor R11, and the capacitor C1 amplify the amplified ignition voltage signal. The voltage signal undergoes differentiation processing, and the differentiated ignition voltage signal is transmitted to the first input terminal and the second input terminal of the main controller.
从上述描述可知，由芯片U4对点火电压信号输出端输入的点火电压信号进行放大，经过二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1的微分处理后分别送入主控制器上的两个端口上，从而得到点火电压信号，之后交由主控制器进行处理即可得到点火电压数据，使得使用者可以直接观看点火电压数据来判断故障所在。As can be seen from the above description, the ignition voltage signal input from the ignition voltage signal output terminal is amplified by the chip U4, and after the differential processing of the diode D1, the diode D2, the resistor R13, the resistor R15, the resistor R10, the resistor C3, the resistor R11, and the capacitor C1 They are sent to the two ports on the main controller to obtain the ignition voltage signal, which is then processed by the main controller to obtain the ignition voltage data, so that the user can directly watch the ignition voltage data to determine the fault.
进一步地，所述时间信号处理电路包括芯片U5，所述点火时间信号输出端与所述芯片U5的第三引脚连接，所述芯片U5的第一引脚与所述主控制器上的第三输入端连接；Further, the time signal processing circuit includes a chip U5, the ignition time signal output terminal is connected to the third pin of the chip U5, and the first pin of the chip U5 is connected to the first pin on the main controller. Three input terminal connection;
所述芯片U5对所述点火时间信号输出端输入的点火时间信号进行放大。The chip U5 amplifies the ignition time signal input from the ignition time signal output terminal.
从上述描述可知，由芯片U5对点火时间信号输出端输入的点火时间信号进行放大，之后交由主控制器进行处理即可得到点火时间数据，使得使用者可以直接观看点火时间数据来判断故障所在。As can be seen from the above description, the ignition time signal input from the ignition time signal output terminal is amplified by the chip U5, and then processed by the main controller to obtain the ignition time data, so that the user can directly watch the ignition time data to judge the fault. .
进一步地，所述周期信号处理电路包括芯片U5、电阻R24、三极管Q2、电容C6以及电阻R21；Further, the periodic signal processing circuit includes a chip U5, a resistor R24, a transistor Q2, a capacitor C6, and a resistor R21;
所述点火周期信息输出端与所述芯片U5的第五引脚连接，所述芯片U5的第七引脚与所述电阻R24的一端连接，所述电阻R24的另一端与所述三极管Q2的基极连接，所述三极管Q2的发射极与所述电容C6的一端接地，所述三极管Q2的集电极、所述电容C6的另一端以及所述主控制器的第四输入端均与所述电阻R21的一端连接，所述电阻R21的另一端连接供电端；The ignition cycle information output terminal is connected to the fifth pin of the chip U5, the seventh pin of the chip U5 is connected to one end of the resistor R24, and the other end of the resistor R24 is connected to the transistor Q2. The base is connected, the emitter of the transistor Q2 and one end of the capacitor C6 are grounded, the collector of the transistor Q2, the other end of the capacitor C6, and the fourth input terminal of the main controller are all connected to the One end of the resistor R21 is connected, and the other end of the resistor R21 is connected to the power supply terminal;
所述芯片U5对所述点火周期信息输出端输入的点火周期信号进行放大，所述电阻R24、三极管Q2、电容C6以及电阻R21对已放大的所述点火周期信号进行整形，已整形的所述点火周期信号传输至所述主控制器上的第四输入端上。The chip U5 amplifies the ignition period signal input from the ignition period information output terminal, the resistor R24, the transistor Q2, the capacitor C6, and the resistor R21 reshape the amplified ignition period signal, and the reshaped signal The ignition cycle signal is transmitted to the fourth input terminal on the main controller.
从上述描述可知，由芯片U5对点火周期信号输出端输入的点火周期信号进行放大，再经过电阻R24、三极管Q2、电容C6以及电阻R21的整形之后交由主控制器进行处理即可得到点火时间数据，使得使用者可以直接观看点火周期数据来判断故障所在。It can be seen from the above description that the ignition cycle signal input from the ignition cycle signal output terminal is amplified by the chip U5, and then it is reshaped by the resistor R24, transistor Q2, capacitor C6, and resistor R21, and then handed over to the main controller for processing to obtain the ignition time. Data, so that the user can directly watch the ignition cycle data to judge the fault.
进一步地，所述显示电路包括能显示至少两组点火信号数据的液晶显示屏。Further, the display circuit includes a liquid crystal display screen capable of displaying at least two sets of ignition signal data.
从上述描述可知，采用液晶显示屏来显示至少两组点火信号数据，以使得使用者能在同一液晶显示屏上同时观看多个点火线圈的检测数据，从而方便使用者通过比对来更加快速准确的判断出故障所在。It can be seen from the above description that the LCD screen is used to display at least two sets of ignition signal data, so that the user can watch the detection data of multiple ignition coils on the same LCD screen at the same time, so that the user can compare quickly and accurately. The judgement of the fault is.
进一步地，还包括电源电路，所述电源电路的输入端为9V直流电源，所述电源电路的输出端为3V到5V之间的供电端。Further, it further includes a power supply circuit, the input end of the power supply circuit is a 9V direct current power supply, and the output end of the power supply circuit is a power supply end between 3V and 5V.
从上述描述可知，提供一种电源电路的较佳技术方案，9V直流电源实现简单，3V到5V之间的供电端适用于绝大多数元器件的工作电压。It can be seen from the above description that a better technical solution for a power supply circuit is provided. The 9V DC power supply is simple to implement, and the power supply terminal between 3V and 5V is suitable for the working voltage of most components.
进一步地，所述电源电路包括三极管Q8，二极管D4以及芯片U7；Further, the power supply circuit includes a transistor Q8, a diode D4 and a chip U7;
所述三极管Q8的发射极与9V直流电源连接，所述三极管Q8的集电极与所述二极管D4的正端连接，所述二极管D4的负端与所述芯片U7的输入端连接，所述芯片U7的输出端为供电端，所述芯片U7的接地端接地。The emitter of the transistor Q8 is connected to a 9V DC power supply, the collector of the transistor Q8 is connected to the positive terminal of the diode D4, and the negative terminal of the diode D4 is connected to the input terminal of the chip U7. The output terminal of U7 is the power supply terminal, and the ground terminal of the chip U7 is grounded.
从上述描述可知，9V的直流电源经三极管Q8，二极管D4再通过芯片U7进行稳压以提供给系统一个稳定的工作电压。It can be seen from the above description that the 9V DC power supply is regulated by the transistor Q8 and the diode D4 through the chip U7 to provide a stable operating voltage for the system.
请参照图1，本发明的实施例一为：Please refer to Figure 1, the first embodiment of the present invention is:
本实施例中适用于点火线圈所在的大部件发生故障的场景，用于检测点火线圈是否工作异常。This embodiment is applicable to a scenario where a large component where the ignition coil is located fails, and is used to detect whether the ignition coil is working abnormally.
非接触手持式多工位汽车高压点火线圈故障探测仪，包括电源电路、传感天线、电磁场信号放大电路、点火信号处理电路、显示电路以及键盘电路；传感天线的输出端与电磁场信号放大电路的输入端连接，电磁场信号放大电路的输出端与点火信号处理电路的输入端连接，点火信号处理电路的输出端与显示电路的输入端连接，点火信号处理电路与键盘电路双向连接，即进行数据输入和输出操作；同时，电源电路分别与电磁场信号放大电路、点火信号处理电路以及显示电路连接，从而为上述电路提供稳定的工作电压。Non-contact handheld multi-station automotive high-voltage ignition coil fault detector, including power supply circuit, sensing antenna, electromagnetic field signal amplification circuit, ignition signal processing circuit, display circuit and keyboard circuit; the output terminal of the sensing antenna and electromagnetic field signal amplification circuit The input end of the electromagnetic field signal amplifying circuit is connected to the input end of the ignition signal processing circuit, the output end of the ignition signal processing circuit is connected to the input end of the display circuit, and the ignition signal processing circuit is bidirectionally connected to the keyboard circuit for data Input and output operations; at the same time, the power supply circuit is respectively connected with the electromagnetic field signal amplifying circuit, the ignition signal processing circuit and the display circuit, so as to provide a stable working voltage for the above-mentioned circuit.
在本实施例中，传感天线用于感应点火线圈点火时的电磁场信号，在使用时，传感天线靠近已点火的待检测点火线圈即可。In this embodiment, the sensor antenna is used to induce the electromagnetic field signal when the ignition coil is ignited. When in use, the sensor antenna is only required to be close to the ignited ignition coil to be detected.
如图3所示，电磁场信号放大电路包括电阻R39、电容C22、电阻R45、电阻R44、芯片U2以及电阻R43；传感天线的输出端通过接口器件J6与电阻R39的一端连接，电阻R39的另一端与电容C22的一端连接，电容C22的另一端与电阻R45的一端连接，电阻R45的一端与电阻R44的另一端连接，电阻R44的另一端与芯片U2的第五引脚连接；芯片U2用于对第五引脚的输入信号进行运算放大，并从第七引脚输出已放大的电磁场信号，即电磁场信号放大电路的输出端为图3中的U2-7。As shown in Figure 3, the electromagnetic field signal amplifying circuit includes resistor R39, capacitor C22, resistor R45, resistor R44, chip U2, and resistor R43; the output end of the sensing antenna is connected to one end of resistor R39 through interface device J6, and the other end of resistor R39 One end is connected to one end of capacitor C22, the other end of capacitor C22 is connected to one end of resistor R45, one end of resistor R45 is connected to the other end of resistor R44, and the other end of resistor R44 is connected to the fifth pin of chip U2; for chip U2 To perform operational amplification on the input signal of the fifth pin, and output the amplified electromagnetic field signal from the seventh pin, that is, the output terminal of the electromagnetic field signal amplifying circuit is U2-7 in FIG. 3.
在本实施例中，显示电路包括能显示至少两组点火信号数据的液晶显示屏。本实施例还包括键盘电路，以便于使用者通过键盘电路进行操作。在本实施例中，液晶显示屏能同时显示六组点火检测数据，从而满足现有通常有四个或六个点火线圈的维修现状，使得所有的点火线圈的检测数据均能在同一液晶显示屏上显示。In this embodiment, the display circuit includes a liquid crystal display that can display at least two sets of ignition signal data. This embodiment also includes a keyboard circuit, so that the user can operate through the keyboard circuit. In this embodiment, the LCD screen can display six sets of ignition detection data at the same time, so as to meet the current maintenance status of usually four or six ignition coils, so that all the ignition coil detection data can be on the same LCD screen. On display.
如图2所示，电源电路的输入端为9V直流电源，电源电路的输出端为3V到5V之间的供电端，本实施例为3.3V。具体的，电源电路包括三极管Q8，二极管D4以及芯片U7；三极管Q8的发射极与9V直流电源连接，三极管Q8的集电极与二极管D4的正端连接，二极管D4的负端与芯片U7的输入端连接，芯片U7的输出端为供电端，芯片U7的接地端接地。As shown in Figure 2, the input terminal of the power supply circuit is a 9V DC power supply, and the output terminal of the power supply circuit is a power supply terminal between 3V and 5V, which is 3.3V in this embodiment. Specifically, the power supply circuit includes a transistor Q8, a diode D4 and a chip U7; the emitter of the transistor Q8 is connected to a 9V DC power supply, the collector of the transistor Q8 is connected to the positive terminal of the diode D4, and the negative terminal of the diode D4 is connected to the input terminal of the chip U7 Connect, the output terminal of the chip U7 is the power supply terminal, and the ground terminal of the chip U7 is grounded.
如图2所示的二极管D8、二极管D9、电阻R54、电阻R56、电阻R59、三极管Q10、电阻R58、电阻R60、电容C12、电阻R57、电容C26、电容C27、电容C32、电容C33、电阻R33、电阻R38、电容C19以及芯片U6分别按照图示连接，从而通过键盘电源开关OPW_KEY及主控制器MCU的电源输入端IN_POW、电源输出端OUT_POW以及基准电压端AIN_VREF来进行开机和关机的控制。As shown in Figure 2, diode D8, diode D9, resistor R54, resistor R56, resistor R59, transistor Q10, resistor R58, resistor R60, capacitor C12, resistor R57, capacitor C26, capacitor C27, capacitor C32, capacitor C33, resistor R33 , Resistor R38, capacitor C19 and chip U6 are respectively connected as shown in the figure, so that the power on and off are controlled through the keyboard power switch OPW_KEY and the power input terminal IN_POW, power output terminal OUT_POW and reference voltage terminal AIN_VREF of the main controller MCU.
在本实施例中，芯片U2的型号具体为RS822，芯片U6的型号具体为RS8562，芯片U7的型号具体为AMS117-3.3。In this embodiment, the model of the chip U2 is specifically RS822, the model of the chip U6 is specifically RS8562, and the model of the chip U7 is specifically AMS117-3.3.
请参照图1至图5，本发明的实施例二为：Please refer to Figures 1 to 5, the second embodiment of the present invention is:
本实施例中适用于点火线圈所在的大部件发生故障的场景，用于检测点火线圈是否工作异常。This embodiment is applicable to a scenario where a large component where the ignition coil is located fails, and is used to detect whether the ignition coil is working abnormally.
非接触手持式多工位汽车高压点火线圈故障探测仪，在上述实施例一的基础上，信号处理电路包括主控制器、信号分离电路、电压信号处理电路、时间信号处理电路以及周期信号处理电路；电磁场信号放大电路的输出端U2-7与信号分离电路的输入端连接，信号分离电路的三个输出端分别与电压信号处理电路的输入端、时间信号处理电路的输入端以及周期信号处理电路的输入端进行一一对应连接，电压信号处理电路的输出端、时间信号处理电路的输出端以及周期信号处理电路的输出端分别与主控制器的一个ADC通道连接。Non-contact handheld multi-station automobile high-voltage ignition coil fault detector. Based on the above embodiment 1, the signal processing circuit includes a main controller, a signal separation circuit, a voltage signal processing circuit, a time signal processing circuit, and a periodic signal processing circuit ; The output terminal U2-7 of the electromagnetic field signal amplification circuit is connected to the input terminal of the signal separation circuit, and the three output terminals of the signal separation circuit are respectively connected with the input terminal of the voltage signal processing circuit, the input terminal of the time signal processing circuit and the periodic signal processing circuit The input terminals of the voltage signal processing circuit, the output terminal of the time signal processing circuit, and the output terminal of the periodic signal processing circuit are respectively connected with one ADC channel of the main controller.
如图3和图4所示，信号分离电路包括电阻R52、电容C36、电容C25、电阻R53、电阻R48、电容C14、电容C13、电感L1以及电容C18；电磁场信号放大电路的输出端U2-7与电阻R52的一端连接，电阻R52的另一端与电容C25的一端连接，电容C25的另一端与电阻R53的一端连接，电阻R53的另一端与电阻R48的一端连接，电阻R48的另一端与供电端连接，电阻R52与电容C25之间并联一个电容C36，电容C36的另一端接地，电阻R53与电阻R48之间并联一个点火时间信号输出端U5-3；电磁场信号放大电路的输出端U2-7同时与电容C14的一端连接，电容C14的另一端与电容C13的一端连接，电容C13的另一端与电感L1的一端连接，电感L1的另一端接地，电容C13与电感L1之间并联一个点火周期信息输出端；电容C13与电感L1之间与电容C18的一端连接，电容C18的另一端为点火电压信号输出端U4-3。在图3中，点火周期信息输出端直接通过电阻R34接入芯片U5的第五引脚。As shown in Figures 3 and 4, the signal separation circuit includes resistor R52, capacitor C36, capacitor C25, resistor R53, resistor R48, capacitor C14, capacitor C13, inductor L1 and capacitor C18; the output terminal U2-7 of the electromagnetic field signal amplifier circuit Connected to one end of resistor R52, the other end of resistor R52 is connected to one end of capacitor C25, the other end of capacitor C25 is connected to one end of resistor R53, the other end of resistor R53 is connected to one end of resistor R48, and the other end of resistor R48 is connected to the power supply A capacitor C36 is connected in parallel between the resistor R52 and the capacitor C25, the other end of the capacitor C36 is grounded, and an ignition time signal output terminal U5-3 is connected in parallel between the resistor R53 and the resistor R48; the output terminal U2-7 of the electromagnetic field signal amplifying circuit At the same time, it is connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13, the other end of the capacitor C13 is connected to one end of the inductor L1, the other end of the inductor L1 is grounded, and an ignition cycle is connected in parallel between the capacitor C13 and the inductor L1 Information output terminal: The capacitor C13 and the inductor L1 are connected to one end of the capacitor C18, and the other end of the capacitor C18 is the ignition voltage signal output terminal U4-3. In Figure 3, the ignition cycle information output terminal is directly connected to the fifth pin of the chip U5 through a resistor R34.
如图5所示，电压信号处理电路包括芯片U4、二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1；点火电压信号输出端U4-3与芯片U4的第三引脚连接，芯片U4的第五引脚同时与电容C3的一端、电阻R15的一端、电阻R13的一端、电阻R10的一端连接，电容C3的另一端与电阻R15的另一端接地，电阻R13的另一端与二极管D2的负端连接，二极管D2的正端与芯片U4的第一引脚连接，电阻R10的另一端与主控制器上的第一输入端MCU_13连接；芯片U4的第二引脚与电阻R11的一端连接，电阻R11的另一端同时与主控制器上的第二输入端MCU_20、电容C1的一端连接，电容C1的另一端接地，芯片U4的第一引脚与二极管D2的负端连接，二极管D2的正端连接在电阻R11与芯片U4的第二引脚之间，芯片U4的第六引脚连接在芯片U4的第二引脚与电阻R11之间；芯片U4对点火电压信号输出端U4-3输入的点火电压信号进行放大，二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1对已放大的点火电压信号进行微分处理，已微分的点火电压信号传输至主控制器上的第一输入端MCU_13与第二输入端MCU_20上。As shown in Figure 5, the voltage signal processing circuit includes a chip U4, a diode D1, a diode D2, a resistor R13, a resistor R15, a resistor R10, a resistor C3, a resistor R11, and a capacitor C1; the ignition voltage signal output terminal U4-3 and the chip U4 The third pin is connected. The fifth pin of the chip U4 is connected to one end of the capacitor C3, one end of the resistor R15, one end of the resistor R13, and one end of the resistor R10 at the same time. The other end of the capacitor C3 and the other end of the resistor R15 are grounded. The other end of R13 is connected to the negative end of the diode D2, the positive end of the diode D2 is connected to the first pin of the chip U4, the other end of the resistor R10 is connected to the first input terminal MCU_13 on the main controller; the second end of the chip U4 The pin is connected to one end of the resistor R11, and the other end of the resistor R11 is simultaneously connected to the second input terminal MCU_20 on the main controller and one end of the capacitor C1. The other end of the capacitor C1 is grounded. The first pin of the chip U4 is connected to the diode D2. The negative terminal of the diode D2 is connected between the resistor R11 and the second pin of the chip U4, the sixth pin of the chip U4 is connected between the second pin of the chip U4 and the resistor R11; the pair of chip U4 The ignition voltage signal input from the ignition voltage signal output terminal U4-3 is amplified. Diode D1, diode D2, resistor R13, resistor R15, resistor R10, resistor C3, resistor R11, and capacitor C1 perform differentiation processing on the amplified ignition voltage signal. The differentiated ignition voltage signal is transmitted to the first input terminal MCU_13 and the second input terminal MCU_20 on the main controller.
如图4所示，时间信号处理电路包括芯片U5，点火时间信号输出端U5-3与芯片U5的第三引脚连接，芯片U5的第一引脚与主控制器上的第三输入端MCU_17连接；芯片U5对点火时间信号输出端U5-3输入的点火时间信号进行放大。As shown in Figure 4, the time signal processing circuit includes a chip U5, the ignition time signal output terminal U5-3 is connected to the third pin of the chip U5, and the first pin of the chip U5 is connected to the third input terminal MCU_17 on the main controller. Connection; Chip U5 amplifies the ignition time signal input from the ignition time signal output terminal U5-3.
如图4所示，，周期信号处理电路包括芯片U5、电阻R24、三极管Q2、电容C6以及电阻R21；点火周期信息输出端与芯片U5的第五引脚连接，芯片U5的第七引脚与电阻R24的一端连接，电阻R24的另一端与三极管Q2的基极连接，三极管Q2的发射极与电容C6的一端接地，三极管Q2的集电极、电容C6的另一端以及主控制器的第四输入端MCU_6均与电阻R21的一端连接，电阻R21的另一端连接供电端；芯片U5对点火周期信息输出端输入的点火周期信号进行放大，电阻R24、三极管Q2、电容C6以及电阻R21对已放大的点火周期信号进行整形，已整形的点火周期信号传输至主控制器上的第四输入端MCU_6上。As shown in Figure 4, the periodic signal processing circuit includes a chip U5, a resistor R24, a transistor Q2, a capacitor C6, and a resistor R21; the ignition cycle information output terminal is connected to the fifth pin of the chip U5, and the seventh pin of the chip U5 is connected to the fifth pin of the chip U5. One end of the resistor R24 is connected, the other end of the resistor R24 is connected to the base of the transistor Q2, the emitter of the transistor Q2 and one end of the capacitor C6 are grounded, the collector of the transistor Q2, the other end of the capacitor C6 and the fourth input of the main controller The MCU_6 terminal is connected to one end of the resistor R21, and the other end of the resistor R21 is connected to the power supply terminal; the chip U5 amplifies the ignition cycle signal input from the ignition cycle information output terminal, and the resistor R24, the transistor Q2, the capacitor C6 and the resistor R21 amplify the amplified The ignition cycle signal is shaped, and the shaped ignition cycle signal is transmitted to the fourth input terminal MCU_6 on the main controller.
在图示中还包括电阻R27、电容C10、电阻R30、电容C8、电阻R25、电阻R28、电容C16、电容C17、电阻R37作为芯片U5的外围电路，以配合上述的输出电路和整形电路来实现点火周期信号和点火时间信号的输出。In the figure, it also includes resistor R27, capacitor C10, resistor R30, capacitor C8, resistor R25, resistor R28, capacitor C16, capacitor C17, and resistor R37 as the peripheral circuit of chip U5 to cooperate with the above-mentioned output circuit and shaping circuit. The output of the ignition cycle signal and the ignition time signal.
在本实施例中，芯片U4的型号具体为RS8562，芯片U5的型号具体为RS8562。In this embodiment, the model of the chip U4 is specifically RS8562, and the model of the chip U5 is specifically RS8562.
综上所述，本发明提供的非接触手持式多工位汽车高压点火线圈故障探测仪，通过传感天线感应到汽车点火线圈点火的电磁场变化，再通过电磁场信号放大电路把点火的电磁场信号放大处理，通过信号分离电路对已放大的电磁场信号进行分离，分离出三组信号并进行不同的处理，最后传输到主控制器中转化为数字信号并得到对应的测量值，即点火信号检测数据包括电压信号、时间信号以及周期信号，以得到更多与故障相关的点火信号检测数据，然后通过显示电路显示显示至少两组点火信号数据，以使得使用者能在同一液晶显示屏上同时观看多个点火线圈的检测数据，从而方便使用者通过显示的点火信号检测数据进行比对以便以判断点火线圈的故障所在，即采用非接触式的快速感应，无需对点火线圈进行任何拆卸，从而能够在节约时间和成本的情况下快速检测出工作异常的点火线圈。In summary, the non-contact handheld multi-station automobile high-voltage ignition coil fault detector provided by the present invention senses the electromagnetic field change of the automobile ignition coil ignition through the sensing antenna, and then amplifies the ignition electromagnetic field signal through the electromagnetic field signal amplifier circuit Processing, the amplified electromagnetic field signal is separated by the signal separation circuit, three groups of signals are separated and processed differently, and finally transmitted to the main controller to be converted into a digital signal and the corresponding measurement value is obtained, that is, the ignition signal detection data includes Voltage signal, time signal and periodic signal to get more ignition signal detection data related to the fault, and then display at least two sets of ignition signal data through the display circuit, so that the user can watch multiple ignition signal data on the same LCD screen at the same time The detection data of the ignition coil, so as to facilitate the user to compare the displayed ignition signal detection data to determine the fault of the ignition coil, that is, the use of non-contact rapid induction without any disassembly of the ignition coil, which can save money In the case of time and cost, an abnormally working ignition coil can be quickly detected.
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等同变换，或直接或间接运用在相关的技术领域，均同理包括在本发明的专利保护范围内。The above are only the embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent transformations made using the content of the description and drawings of the present invention, or directly or indirectly applied in related technical fields, are included in the same reasoning. Within the scope of patent protection of the present invention.

Claims (10)

  1. 非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：包括传感天线、电磁场信号放大电路、点火信号处理电路以及显示电路；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector is characterized in that it includes a sensing antenna, an electromagnetic field signal amplification circuit, an ignition signal processing circuit and a display circuit;
    所述传感天线的输出端与所述电磁场信号放大电路的输入端连接，所述电磁场信号放大电路的输出端与所述点火信号处理电路的输入端连接，所述点火信号处理电路的输出端与所述显示电路的输入端连接；The output terminal of the sensing antenna is connected to the input terminal of the electromagnetic field signal amplifying circuit, the output terminal of the electromagnetic field signal amplifying circuit is connected to the input terminal of the ignition signal processing circuit, and the output terminal of the ignition signal processing circuit Connected with the input terminal of the display circuit;
    所述传感天线用于感应点火线圈点火时的电磁场信号。The sensing antenna is used to induce electromagnetic field signals when the ignition coil is ignited.
  2. 根据权利要求1所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述信号处理电路包括主控制器、信号分离电路、电压信号处理电路、时间信号处理电路以及周期信号处理电路；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 1, wherein the signal processing circuit includes a main controller, a signal separation circuit, a voltage signal processing circuit, a time signal processing circuit, and Periodic signal processing circuit;
    所述电磁场信号放大电路的输出端与所述信号分离电路的输入端连接，所述信号分离电路的三个输出端分别与电压信号处理电路的输入端、时间信号处理电路的输入端以及周期信号处理电路的输入端进行一一对应连接，所述电压信号处理电路的输出端、所述时间信号处理电路的输出端以及所述周期信号处理电路的输出端分别与所述主控制器的一个ADC通道连接。The output terminal of the electromagnetic field signal amplifying circuit is connected to the input terminal of the signal separation circuit, and the three output terminals of the signal separation circuit are respectively connected to the input terminal of the voltage signal processing circuit, the input terminal of the time signal processing circuit, and the periodic signal The input terminals of the processing circuit are connected in one-to-one correspondence. The output terminal of the voltage signal processing circuit, the output terminal of the time signal processing circuit, and the output terminal of the periodic signal processing circuit are respectively connected with an ADC of the main controller. Channel connection.
  3. 根据权利要求1所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述电磁场信号放大电路包括电阻R39、电容C22、电阻R45、电阻R44、芯片U2以及电阻R43；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 1, wherein the electromagnetic field signal amplifying circuit includes a resistor R39, a capacitor C22, a resistor R45, a resistor R44, a chip U2, and a resistor R43 ；
    所述传感天线的输出端与所述电阻R39的一端连接，所述电阻R39的另一端与所述电容C22的一端连接，所述电容C22的另一端与所述电阻R45的一端连接，所述电阻R45的一端与所述电阻R44的另一端连接，所述电阻R44的另一端与芯片U2的第五引脚连接；The output end of the sensing antenna is connected to one end of the resistor R39, the other end of the resistor R39 is connected to one end of the capacitor C22, and the other end of the capacitor C22 is connected to one end of the resistor R45, so One end of the resistor R45 is connected to the other end of the resistor R44, and the other end of the resistor R44 is connected to the fifth pin of the chip U2;
    所述芯片U2用于对所述第五引脚的输入信号进行运算放大，并从第七引脚输出已放大的电磁场信号。The chip U2 is used to perform operational amplification on the input signal of the fifth pin, and output the amplified electromagnetic field signal from the seventh pin.
  4. 根据权利要求2所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述信号分离电路包括电阻R52、电容C36、电容C25、电阻R53、电阻R48、电容C14、电容C13、电感L1以及电容C18；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 2, wherein the signal separation circuit includes a resistor R52, a capacitor C36, a capacitor C25, a resistor R53, a resistor R48, a capacitor C14, Capacitor C13, inductor L1 and capacitor C18;
    所述电磁场信号放大电路的输出端与所述电阻R52的一端连接，所述电阻R52的另一端与所述电容C25的一端连接，所述电容C25的另一端与所述电阻R53的一端连接，所述电阻R53的另一端与所述电阻R48的一端连接，所述电阻R48的另一端与供电端连接，所述电阻R52与所述电容C25之间并联一个电容C36，所述电容C36的另一端接地，所述电阻R53与所述电阻R48之间并联一个点火时间信号输出端；The output end of the electromagnetic field signal amplifying circuit is connected to one end of the resistor R52, the other end of the resistor R52 is connected to one end of the capacitor C25, and the other end of the capacitor C25 is connected to one end of the resistor R53, The other end of the resistor R53 is connected to one end of the resistor R48, the other end of the resistor R48 is connected to the power supply end, a capacitor C36 is connected in parallel between the resistor R52 and the capacitor C25, and the other end of the capacitor C36 One end is grounded, and an ignition time signal output terminal is connected in parallel between the resistor R53 and the resistor R48;
    所述电磁场信号放大电路的输出端同时与电容C14的一端连接，所述电容C14的另一端与所述电容C13的一端连接，所述电容C13的另一端与所述电感L1的一端连接，所述电感L1的另一端接地，所述电容C13与所述电感L1之间并联一个点火周期信息输出端；The output end of the electromagnetic field signal amplifying circuit is simultaneously connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is connected to one end of the inductor L1, so The other end of the inductor L1 is grounded, and an ignition cycle information output terminal is connected in parallel between the capacitor C13 and the inductor L1;
    所述电容C13与所述电感L1之间与所述电容C18的一端连接，所述电容C18的另一端为点火电压信号输出端。The capacitor C13 and the inductor L1 are connected to one end of the capacitor C18, and the other end of the capacitor C18 is an ignition voltage signal output terminal.
  5. 根据权利要求4所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述电压信号处理电路包括芯片U4、二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 4, wherein the voltage signal processing circuit includes a chip U4, a diode D1, a diode D2, a resistor R13, a resistor R15, and a resistor R10 , Resistor C3, resistor R11 and capacitor C1;
    所述点火电压信号输出端与所述芯片U4的第三引脚连接，所述芯片U4的第五引脚同时与所述电容C3的一端、所述电阻R15的一端、所述电阻R13的一端、所述电阻R10的一端连接，所述电容C3的另一端与所述电阻R15的另一端接地，所述电阻R13的另一端与所述二极管D2的负端连接，所述二极管D2的正端与所述芯片U4的第一引脚连接，所述电阻R10的另一端与所述主控制器上的第一输入端连接；The ignition voltage signal output terminal is connected to the third pin of the chip U4, and the fifth pin of the chip U4 is simultaneously connected to one end of the capacitor C3, one end of the resistor R15, and one end of the resistor R13. One end of the resistor R10 is connected, the other end of the capacitor C3 is grounded to the other end of the resistor R15, the other end of the resistor R13 is connected to the negative end of the diode D2, and the positive end of the diode D2 Connected to the first pin of the chip U4, and the other end of the resistor R10 is connected to the first input terminal on the main controller;
    所述芯片U4的第二引脚与所述电阻R11的一端连接，所述电阻R11的另一端同时与所述主控制器上的第二输入端、所述电容C1的一端连接，所述电容C1的另一端接地，所述芯片U4的第一引脚与所述二极管D2的负端连接，所述二极管D2的正端连接在所述电阻R11与所述芯片U4的第二引脚之间，所述芯片U4的第六引脚连接在所述芯片U4的第二引脚与所述电阻R11之间；The second pin of the chip U4 is connected to one end of the resistor R11, and the other end of the resistor R11 is simultaneously connected to the second input end of the main controller and one end of the capacitor C1. The other end of C1 is grounded, the first pin of the chip U4 is connected to the negative end of the diode D2, and the positive end of the diode D2 is connected between the resistor R11 and the second pin of the chip U4 , The sixth pin of the chip U4 is connected between the second pin of the chip U4 and the resistor R11;
    所述芯片U4对所述点火电压信号输出端输入的点火电压信号进行放大，所述二极管D1、二极管D2、电阻R13、电阻R15、电阻R10、电阻C3、电阻R11以及电容C1对已放大的点火电压信号进行微分处理，已微分的所述点火电压信号传输至所述主控制器上的第一输入端与第二输入端上。The chip U4 amplifies the ignition voltage signal input from the ignition voltage signal output terminal. The diode D1, the diode D2, the resistor R13, the resistor R15, the resistor R10, the resistor C3, the resistor R11, and the capacitor C1 amplify the amplified ignition voltage signal. The voltage signal undergoes differentiation processing, and the differentiated ignition voltage signal is transmitted to the first input terminal and the second input terminal of the main controller.
  6. 根据权利要求4所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述时间信号处理电路包括芯片U5，所述点火时间信号输出端与所述芯片U5的第三引脚连接，所述芯片U5的第一引脚与所述主控制器上的第三输入端连接；The non-contact hand-held multi-station automobile high-voltage ignition coil fault detector according to claim 4, wherein the time signal processing circuit includes a chip U5, and the ignition time signal output terminal is connected to the second terminal of the chip U5. Three-pin connection, the first pin of the chip U5 is connected to the third input terminal on the main controller;
    所述芯片U5对所述点火时间信号输出端输入的点火时间信号进行放大。The chip U5 amplifies the ignition time signal input from the ignition time signal output terminal.
  7. 根据权利要求4所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述周期信号处理电路包括芯片U5、电阻R24、三极管Q2、电容C6以及电阻R21；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 4, wherein the periodic signal processing circuit includes a chip U5, a resistor R24, a transistor Q2, a capacitor C6, and a resistor R21;
    所述点火周期信息输出端与所述芯片U5的第五引脚连接，所述芯片U5的第七引脚与所述电阻R24的一端连接，所述电阻R24的另一端与所述三极管Q2的基极连接，所述三极管Q2的发射极与所述电容C6的一端接地，所述三极管Q2的集电极、所述电容C6的另一端以及所述主控制器的第四输入端均与所述电阻R21的一端连接，所述电阻R21的另一端连接供电端；The ignition cycle information output terminal is connected to the fifth pin of the chip U5, the seventh pin of the chip U5 is connected to one end of the resistor R24, and the other end of the resistor R24 is connected to the transistor Q2. The base is connected, the emitter of the transistor Q2 and one end of the capacitor C6 are grounded, the collector of the transistor Q2, the other end of the capacitor C6, and the fourth input terminal of the main controller are all connected to the One end of the resistor R21 is connected, and the other end of the resistor R21 is connected to the power supply terminal;
    所述芯片U5对所述点火周期信息输出端输入的点火周期信号进行放大，所述电阻R24、三极管Q2、电容C6以及电阻R21对已放大的所述点火周期信号进行整形，已整形的所述点火周期信号传输至所述主控制器上的第四输入端上。The chip U5 amplifies the ignition period signal input from the ignition period information output terminal, the resistor R24, the transistor Q2, the capacitor C6, and the resistor R21 reshape the amplified ignition period signal, and the reshaped signal The ignition cycle signal is transmitted to the fourth input terminal on the main controller.
  8. 根据权利要求1至7任一所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述显示电路包括能显示至少两组点火信号数据的液晶显示屏。The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to any one of claims 1 to 7, wherein the display circuit includes a liquid crystal display that can display at least two sets of ignition signal data.
  9. 根据权利要求1至7任一所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：还包括电源电路，所述电源电路的输入端为9V直流电源，所述电源电路的输出端为3V到5V之间的供电端。The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to any one of claims 1 to 7, characterized in that it further comprises a power supply circuit, and the input end of the power supply circuit is a 9V DC power supply. The output terminal of the circuit is a power supply terminal between 3V and 5V.
  10. 根据权利要求9所述的非接触手持式多工位汽车高压点火线圈故障探测仪，其特征在于：所述电源电路包括三极管Q8，二极管D4以及芯片U7；The non-contact handheld multi-station automobile high-voltage ignition coil fault detector according to claim 9, wherein the power supply circuit includes a transistor Q8, a diode D4 and a chip U7;
    所述三极管Q8的发射极与9V直流电源连接，所述三极管Q8的集电极与所述二极管D4的正端连接，所述二极管D4的负端与所述芯片U7的输入端连接，所述芯片U7的输出端为供电端，所述芯片U7的接地端接地。The emitter of the transistor Q8 is connected to a 9V DC power supply, the collector of the transistor Q8 is connected to the positive terminal of the diode D4, and the negative terminal of the diode D4 is connected to the input terminal of the chip U7. The output terminal of U7 is the power supply terminal, and the ground terminal of the chip U7 is grounded.
PCT/CN2019/108366 2019-09-11 2019-09-27 Non-contact handheld multi-station automobile high-voltage ignition coil fault detector WO2021046931A1 (en)

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