Motorcycle ignition coil ignition signal simulation device

Abstract

The utility model discloses a motorcycle high-voltage pack ignition signal simulation device, a signal input end SignalIN of the motorcycle high-voltage pack ignition signal simulation device is used for accessing square wave signals, and a signal output end RPM-OUT of the motorcycle high-voltage pack ignition signal simulation device is used for outputting high-voltage pack ignition simulation signals; a signal input end SignalIN is connected with a base electrode of a triode Q1 through a resistor R1, a collector electrode of the triode Q1 is connected with a first pin of a three-pin inductor T1, a second pin of the three-pin inductor T1 is connected to a working power supply VDD, a third pin of the three-pin inductor T1 is connected with a negative electrode of a rectifier diode D1, a positive electrode of the rectifier diode D1 is connected with a first end of a resistor R2 and a first end of a resistor R3, a second end of the resistor R2 is connected with a signal output end RPM-OUT, and a negative electrode of the rectifier diode D1 is connected with a second end of the resistor R3. And the second end of the resistor R3 and the emitter of the triode Q1 are grounded. The device is small in size and can be conveniently arranged on a motorcycle instrument detection jig.

Description

Technical Field

[0001] The utility model relates to the field of motorcycles, in particular to a motorcycle high-voltage package ignition signal simulation device. Background Art

[0002] Each time a motorcycle's engine rotates one revolution, the motorcycle's high-voltage package is triggered to ignite at high voltage inside the engine. Each time the high-voltage package ignites, a high-voltage package ignition signal is generated. By checking this high-voltage package ignition signal, whether the ignition is successful and the current engine speed can be determined.

[0003] During factory inspection of motorcycle instruments, a high-voltage coil ignition signal must be connected to verify the correctness of the instrument's speed signal processing circuit. However, conventional high-voltage coil ignition coils are large in size, making them difficult to install in motorcycle instrument inspection fixtures.

[0004] In view of the existence of the above problems, it is necessary to study a motorcycle high-voltage coil ignition signal simulation device, which can generate a high-voltage coil ignition simulation signal similar to the high-voltage coil ignition signal. The high-voltage coil ignition simulation signal can be directly input into the existing motorcycle high-voltage coil signal processing circuit to calculate the speed. Moreover, the motorcycle high-voltage coil ignition signal simulation device is small in size and can be conveniently set on a motorcycle instrument detection fixture. Utility Model Content

[0005] The purpose of the utility model is to provide a motorcycle high-voltage coil ignition signal simulation device, which can generate a high-voltage coil ignition simulation signal similar to the high-voltage coil ignition signal. The high-voltage coil ignition simulation signal can be directly input into an existing motorcycle high-voltage coil signal processing circuit to calculate the speed. In addition, the motorcycle high-voltage coil ignition signal simulation device is compact and can be conveniently installed in a motorcycle instrument detection fixture.

[0006] In order to achieve the above objectives, the solution of the present invention is:

[0007] A motorcycle high-voltage coil ignition signal simulation device includes a signal input terminal Signal_IN, a signal output terminal RPM-OUT, a resistor R1, a resistor R2, a resistor R3, a rectifier diode D1, a transistor Q1, and a three-pin inductor T1; the signal input terminal Signal_IN is used to receive a square wave signal, and the signal output terminal RPM-OUT is used to output a high-voltage coil ignition simulation signal; the signal input terminal Signal_IN is connected to the base of the transistor Q1 through the resistor R1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to pin 1 of the three-pin inductor T1, pin 2 of the three-pin inductor T1 is connected to an operating power supply VDD, pin 3 of the three-pin inductor T1 is connected to the cathode of the rectifier diode D1, the anode of the rectifier diode D1 is connected to the first end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R2 is connected to the signal output terminal RPM-OUT, and the second end of the resistor R3 is grounded.

[0008] The motorcycle high-voltage transformer ignition signal simulation device further includes an anti-reverse connection diode D2. Pin 2 of the three-pin inductor T1 is connected to the working power supply VDD through the anti-reverse connection diode D2. The positive electrode of the anti-reverse connection diode D2 is connected to the working power supply VDD, and the negative electrode of the anti-reverse connection diode D2 is connected to pin 2 of the three-pin inductor T1.

[0009] The motorcycle high-voltage coil ignition signal simulation device further includes a resistor R4, a first end of which is connected to pin 2 of a three-pin inductor T1, and a second end of which is connected to the collector of the transistor Q1 and pin 1 of the three-pin inductor T1.

[0010] The voltage of the working power supply VDD is 12V.

[0011] After adopting the above scheme, the working principle of the motorcycle high-voltage package ignition signal simulation device of the utility model is as follows:

[0012] The square wave signal connected to the signal input terminal Signal_IN is input to the base of the transistor Q1 through resistor R1. When the square wave signal is high, the transistor Q1 is turned on, allowing the output current of the operating power supply VDD to flow back to the negative terminal of the operating power supply VDD through pins 1 and 2 of the three-pin inductor T1 and transistor Q1 in sequence. When the square wave signal changes from a high level to a low level, the transistor Q1 is turned off. At this time, due to the freewheeling characteristic of the three-pin inductor T1 (the inductor current cannot change instantaneously), a transient high-voltage signal with low energy but high amplitude is excited between pins 1 and 2, and between pins 2 and 3 of the three-pin inductor T1. The transient high-voltage signal between pins 2 and 3 of the three-pin inductor T1 passes through the rectifier diode D2, resistor R2, and resistor R3 to form a high-voltage package ignition analog signal, which is output from the signal output terminal RPM-OUT.

[0013] As can be seen from the above, the motorcycle high-voltage coil ignition signal simulation device of the present invention can convert a square wave signal into a high-voltage coil ignition simulation signal similar to the high-voltage coil ignition signal. The high-voltage coil ignition simulation signal can be directly input into the existing motorcycle high-voltage coil signal processing circuit to calculate the speed; in addition, the motorcycle high-voltage coil ignition signal simulation device of the present invention has a small number of components, and the volume of the three-pin inductor, which is the largest among the various components in the motorcycle high-voltage coil ignition signal simulation device of the present invention, is also much smaller than the existing high-voltage coil ignition coil. Therefore, the motorcycle high-voltage coil ignition signal simulation device of the present invention has the characteristics of small size and can be conveniently set on a motorcycle instrument detection fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0016] like Figure 1 As shown, the utility model discloses a motorcycle high-voltage coil ignition signal simulation device, which includes a signal input terminal Signal_IN, a signal output terminal RPM-OUT, a resistor R1, a resistor R2, a resistor R3, a rectifier diode D1, a transistor Q1 and a three-pin inductor T1; wherein, the signal input terminal Signal_IN is used to receive a square wave signal, and the signal output terminal RPM-OUT is used to output a high-voltage coil ignition simulation signal; the signal input terminal Signal_IN is connected to the base of the transistor Q1 through the resistor R1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to pin 1 of the three-pin inductor T1, and pin 2 of the three-pin inductor T1 is connected to a working power supply VDD, the voltage of the working power supply VDD can be 12V, pin 3 of the three-pin inductor T1 is connected to the cathode of the rectifier diode D1, the anode of the rectifier diode D1 is connected to the first end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R2 is connected to the signal output terminal RPM-OUT, and the second end of the resistor R3 is grounded.

[0017] The working principle of the motorcycle high-voltage package ignition signal simulation device of the utility model is:

[0018] The square wave signal connected to the signal input terminal Signal_IN is input to the base of the transistor Q1 through resistor R1. When the square wave signal is high, the transistor Q1 is turned on, allowing the output current of the operating power supply VDD to flow back to the negative terminal of the operating power supply VDD through pins 1 and 2 of the three-pin inductor T1 and transistor Q1 in sequence. When the square wave signal changes from a high level to a low level, the transistor Q1 is turned off. At this time, due to the freewheeling characteristic of the three-pin inductor T1 (the inductor current cannot change instantaneously), a transient high-voltage signal with low energy but high amplitude is excited between pins 1 and 2, and between pins 2 and 3 of the three-pin inductor T1. The transient high-voltage signal between pins 2 and 3 of the three-pin inductor T1 passes through the rectifier diode D2, resistor R2, and resistor R3 to form a high-voltage package ignition analog signal, which is output from the signal output terminal RPM-OUT.

[0019] As can be seen from the above, the motorcycle high-voltage coil ignition signal simulation device of the present invention can convert a square wave signal into a high-voltage coil ignition simulation signal similar to the high-voltage coil ignition signal. The high-voltage coil ignition simulation signal can be directly input into the existing motorcycle high-voltage coil signal processing circuit to calculate the speed; in addition, the motorcycle high-voltage coil ignition signal simulation device of the present invention has a small number of components, and the volume of the three-pin inductor, which is the largest among the various components in the motorcycle high-voltage coil ignition signal simulation device of the present invention, is also much smaller than the existing high-voltage coil ignition coil. Therefore, the motorcycle high-voltage coil ignition signal simulation device of the present invention has the characteristics of small size and can be conveniently set on a motorcycle instrument detection fixture.

[0020] In an embodiment of the present invention, the square wave signal is adapted to the three-pin inductor T1, and the high-level time of the square wave signal is fixed to 40us. Under this condition, the maximum voltage of the instantaneous high-voltage signal between pins 2 and 3 of the three-pin inductor T1 is measured to be approximately -270V, which is close to the existing high-voltage package ignition signal; the existing high-voltage package ignition signal is a negative pressure signal, the pulse of the existing high-voltage package ignition signal is approximately 10us, and the maximum voltage of the existing high-voltage package ignition signal is approximately -250V~-300V.

[0021] In an embodiment of the present invention, a motorcycle high-voltage coil ignition signal simulation device of the present invention also includes an anti-reverse connection diode D2. Pin 2 of the three-pin inductor T1 is connected to the working power supply VDD through the anti-reverse connection diode D2. The positive electrode of the anti-reverse connection diode D2 is connected to the working power supply VDD, and the negative electrode of the anti-reverse connection diode D2 is connected to pin 2 of the three-pin inductor T1. The anti-reverse connection diode D2 can prevent the working power supply VDD from being damaged by reverse connection.

[0022] In an embodiment of the present invention, a motorcycle high-voltage coil ignition signal simulation device further includes a resistor R4, a first end of which is connected to pin 2 of a three-pin inductor T1, and a second end of which is connected to the collector of a transistor Q1 and pin 1 of the three-pin inductor T1. Resistor R4 partially absorbs the transient high voltage output between pins 1 and 2 of the three-pin inductor T1 when the transistor Q1 is turned off, thereby protecting the transistor Q1. Furthermore, resistor R4 relatively slowly suppresses the transient high voltage output between pins 1 and 2 of the three-pin inductor T1, while also extending the duration of the transient high voltage signal output between pins 2 and 3 of the three-pin inductor T1 to meet the expected 10µs pulse value of the high-voltage coil ignition simulation signal.

[0023] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A motorcycle high-voltage coil ignition signal simulation device, characterized by: It includes a signal input terminal Signal_IN, a signal output terminal RPM-OUT, resistors R1, R2, R3, a rectifier diode D1, a transistor Q1, and a three-pin inductor T1; the signal input terminal Signal_IN is used to receive a square wave signal, and the signal output terminal RPM-OUT is used to output a high-voltage package ignition analog signal; The signal input terminal Signal_IN is connected to the base of the transistor Q1 through the resistor R1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to pin 1 of the three-pin inductor T1, pin 2 of the three-pin inductor T1 is connected to the working power supply VDD, pin 3 of the three-pin inductor T1 is connected to the cathode of the rectifier diode D1, the anode of the rectifier diode D1 is connected to the first end of the resistor R2 and the first end of the resistor R3, the second end of the resistor R2 is connected to the signal output terminal RPM-OUT, and the second end of the resistor R3 is grounded.

2. The motorcycle high-voltage coil ignition signal simulation device according to claim 1, characterized in that: It also includes an anti-reverse polarity diode D2. Pin 2 of the three-pin inductor T1 is connected to the working power supply VDD through the anti-reverse polarity diode D2. The positive electrode of the anti-reverse polarity diode D2 is connected to the working power supply VDD, and the negative electrode of the anti-reverse polarity diode D2 is connected to pin 2 of the three-pin inductor T1.

3. The motorcycle high-voltage coil ignition signal simulation device according to claim 1, characterized in that: It also includes a resistor R4, a first end of the resistor R4 is connected to pin 2 of the three-pin inductor T1, and a second end of the resistor R4 is connected to the collector of the transistor Q1 and pin 1 of the three-pin inductor T1.

4. The motorcycle high-voltage coil ignition signal simulation device according to claim 1, characterized in that: The voltage of the working power supply VDD is 12V.

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