CN215986370U - Multifunctional test pencil for automobile ignition module circuit diagnosis - Google Patents
Multifunctional test pencil for automobile ignition module circuit diagnosis Download PDFInfo
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- CN215986370U CN215986370U CN202121944709.9U CN202121944709U CN215986370U CN 215986370 U CN215986370 U CN 215986370U CN 202121944709 U CN202121944709 U CN 202121944709U CN 215986370 U CN215986370 U CN 215986370U
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Abstract
The invention relates to a multifunctional electroprobe for automobile ignition module circuit diagnosis, which comprises a pen body and a pen needle arranged at the front end of the pen body, wherein a diagnosis circuit is arranged in the pen body, the rear end of the pen body is provided with a lead for being bonded with a negative electrode end or a grounding end of an automobile ignition module circuit, the diagnosis circuit comprises a voltage stabilizing diode D1, a resistor R1, a resistor R2, a light emitting diode LED1 and a light emitting diode LED2, a junction of the voltage stabilizing diode D1 is connected with one end of the resistor R2 and then is connected with the pen needle, an anode of the voltage stabilizing diode D1 is connected with an anode of the light emitting diode LED1 through the resistor R1, the other end of the resistor R2 is connected with an anode of the light emitting diode LED2, and a cathode of the light emitting diode LED1 is connected with a cathode of the light emitting diode LED2 and then is connected with one end of the lead; the structure is simple, the cost is low, and the manufacture is convenient; the circuit diagnosis device is suitable for circuit diagnosis of various automobile ignition modules, can be used for carrying out circuit detection on a 12V power supply end, a 5V ignition signal feedback end and an ignition signal end respectively, and is convenient and simple to use.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of automobile maintenance, in particular to a multifunctional test pencil for circuit diagnosis of an automobile ignition module.
[ background of the invention ]
At present, the automobile electronic technology has developed to the mature stage of commercialization, the automobile electronic control technology has become an important mark for measuring the development level of modern automobiles, the automobile line detection operation is more and more along with the development of the automobile electronic control technology, the virtual connection phenomenon has a high failure rate according to data statistics, and the existing detection tools mainly comprise a multimeter and a probe pen. Multimeters are not only cumbersome to operate, but also relatively expensive to purchase.
The circuit structure of the probe pen in the prior art is complex, which also results in relatively high cost. For example, the chinese utility model with the publication number CN2377540Y discloses an automotive electrical system probe pen, which adopts the technical scheme that a pen body is provided with a probe and a wire clamp, a detection signal circuit is connected between the probe and the wire clamp, and the detection signal circuit is composed of two to five parallel sub-circuits. The branch circuit is formed by connecting a light-emitting diode and a resistor in series or by connecting a voltage-stabilizing tube, the light-emitting diode and the resistor in series. The number of the sub-circuits is four, one of the sub-circuits is formed by connecting a resistor and a light emitting diode in series, and the other sub-circuits are formed by the resistor, the light emitting diode and voltage stabilizing tubes with different reverse breakdown voltage parameters. It has the following disadvantages:
1. the circuit structure is complex, and a large number of resistor devices cause higher cost;
2. the voltage firstly passes through the light emitting diode and then passes through the resistor, and the resistor cannot protect the light emitting diode, so that the problem of damage to the light emitting diode caused by overlarge current is easily caused.
[ summary of the invention ]
In order to solve the problems, the invention provides the multifunctional electroprobe for the circuit diagnosis of the automobile ignition module, which has the advantages of simple structure, convenience in manufacture, lower cost, convenience and simplicity in use and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
a multifunctional electroprobe for automobile ignition module circuit diagnosis comprises a pen body 1 and a pen needle 2 arranged at the front end of the pen body 1, a diagnosis circuit is arranged in the pen body 1, a lead 3 used for grounding is arranged at the rear end of the pen body 1, the diagnosis circuit comprises a voltage stabilizing diode D1, a resistor R1, a resistor R2, a light emitting diode LED1 and a light emitting diode LED2, a node of the voltage stabilizing diode D1 is connected with the pen needle 2 after the negative pole of the voltage stabilizing diode D1 is connected with one end of the resistor R2, the positive pole of the voltage stabilizing diode D1 is connected with the positive pole of the light emitting diode LED1 through the resistor R1, the other end of the resistor R2 is connected with the positive pole of the light emitting diode LED2, and the node of the light emitting diode LED1 is connected with one end of the lead 3 after the negative pole of the light emitting diode LED2 is connected with the negative pole.
As a preferred embodiment, further defined is: the reverse breakdown voltage of the zener diode D1 is greater than or equal to 5.1V and less than 12V.
As a preferred embodiment, further defined is: the reverse breakdown voltage of the zener diode D1 is 5.1V.
As a preferred embodiment, further defined is: the light emitting diode LED1 is red light, and the light emitting diode LED2 is yellow light.
As a preferred embodiment, further defined is: the resistor R1 and the resistor R2 are both current-limiting resistors.
As a preferred embodiment, further defined is: the other end of the lead 3 is connected with a lead clamp.
As a preferred embodiment, further defined is: the resistance values of the resistor R1 and the resistor R2 are 1K.
As a preferred embodiment, further defined is: when the pen needle 2 is connected and conducted with a 12V power supply end of an automobile ignition module circuit, if the light-emitting diode LED1 and the light-emitting diode LED2 are both normally on, the circuit is normal, and otherwise, the circuit is abnormal.
As a preferred embodiment, further defined is: when the pen needle 2 is connected and conducted with a 5V ignition signal feedback end of an automobile ignition module circuit, if only the light emitting diode LED2 is normally on, the circuit is normal, otherwise, the circuit is abnormal.
As a preferred embodiment, further defined is: when the pen needle 2 is connected and conducted with an ignition signal end of a circuit of an automobile ignition module, if only the light emitting diode LED2 flickers, the circuit is normal, otherwise, the circuit is abnormal.
The beneficial effects of the invention are as follows: the diagnosis circuit comprises a voltage stabilizing diode D1, a resistor R1, a resistor R2, a light emitting diode LED1 and a light emitting diode LED2, wherein the cathode of the voltage stabilizing diode D1 is connected with one end of a resistor R2, then the junction of the voltage stabilizing diode D1 is connected with the pen needle 2, the anode of the voltage stabilizing diode D1 is connected with the anode of the light emitting diode LED1 through a resistor R1, the other end of the resistor R2 is connected with the anode of the light emitting diode LED2, and the junction of the light emitting diode LED1 is connected with one end of a lead 3 after the cathode of the light emitting diode LED2 is connected with the cathode of the light emitting diode LED 3626; the structure is simple, the cost is low, and the manufacture is convenient; the circuit diagnosis device is suitable for circuit diagnosis of various automobile ignition modules, can be used for carrying out circuit detection on a 12V power supply end, a 5V ignition signal feedback end and an ignition signal end respectively, and is convenient and simple to use.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of the invention;
fig. 2 is a circuit schematic of the diagnostic circuit.
[ detailed description ] embodiments
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 and 2, a multifunctional electroprobe for diagnosing an ignition module circuit of an automobile comprises a pen body 1 and a pen needle 2 arranged at the front end of the pen body 1, the pen body 1 is internally provided with a diagnostic circuit, the rear end of the pen body 1 is provided with a lead 3 for grounding, and furthermore, the lead 3 can be connected with a No. 4 bond wire of an automobile ignition module circuit or grounding ends of other equipment or automobile metal, the diagnosis circuit comprises a voltage stabilizing diode D1, a resistor R1, a resistor R2, a light emitting diode LED1 and a light emitting diode LED2, the cathode of the voltage stabilizing diode D1 is connected with one end of the resistor R2, then the node is connected with the pen needle 2, the anode of the zener diode D1 is connected to the anode of the LED1 through a resistor R1, the other end of the resistor R2 is connected with the anode of the light-emitting diode LED2, and the junction of the cathode of the light-emitting diode LED1 is connected with the cathode of the light-emitting diode LED2 and then is connected with one end of the lead 3. In this embodiment, the reverse breakdown voltage of the zener diode D1 is greater than or equal to 5.1V and less than 12V, and more preferably, the reverse breakdown voltage of the zener diode D1 is 5.1V. The resistor R1 and the resistor R2 are both current-limiting resistors. In order to facilitate the connection of the lead 3 with the ground terminal, the other end of the lead 3 is connected with a lead clamp. The multifunctional electroprobe has simple structure, low cost and convenient manufacture, and can be manufactured by the automobile repair lovers. The circuit diagnosis device is suitable for circuit diagnosis of various automobile ignition modules, can be used for carrying out circuit detection on a 12V power supply end, a 5V ignition signal feedback end and an ignition signal end respectively, and is convenient and simple to use.
Since the voltage values are generally 5V and 12V when testing, in this embodiment, two different colors of lights are used, the LED1 is red light and the LED2 is yellow light, in order to distinguish the two voltages. The light emitting diode LED1 and the light emitting diode LED2 are both LED lamps. The resistance values of the resistor R1 and the resistor R2 are 1K. The LED2 has a larger current when it is normally illuminated, and if other lamps with a smaller current are selected, the current flowing through the lamp can be adjusted to a suitable value by changing the resistance of the resistor connected in series with the lamp. The light emitting diode LED1 is a high brightness LED lamp that requires less current to emit light.
Taking the Toyota Ka roller ignition module circuit as an example; the ignition module circuit comprises four wiring terminals, wherein the wiring terminal 1 is a 12V power supply end, the wiring terminal 2 is a 5V ignition signal feedback end (IGF end), the wiring terminal 3 is a 5V ignition signal feedback end (IGT end), and the wiring terminal 4 is a bonding wire. When the pen needle 2 is connected and conducted with a 12V power supply end (No. 1 wiring end) of an automobile ignition module circuit, if the light-emitting diode LED1 and the light-emitting diode LED2 are both normally on (both red light and yellow light are on), the circuit is normal, otherwise, the circuit is abnormal. Since the voltage is 12V, the zener diode D1 reaches the breakdown voltage and enters the on state, and thus the voltage applied to the light emitting diode LED1 and the resistor R1 is 12-5.1= 6.9V. The light emitting condition of the light emitting diode LED1 is achieved, and the light emitting diode LED1 can emit light normally.
When the pen needle 2 is connected and conducted with a 5V ignition signal feedback end (a No. 2 terminal) of an automobile ignition module circuit, if only the light-emitting diode LED2 is normally on (a yellow light is on), the circuit is normal, otherwise, the circuit is abnormal. Since the light emitting diode LED1 is connected in series with a 5.1V zener diode D1, which has not yet reached the breakdown voltage of the zener diode D1, the zener diode D1 is in the off state and no current flows through the zener diode D1. The light emitting diode LED1 is not lit.
When the pen needle 2 is connected and conducted with an ignition signal end (a No. 3 terminal) of an automobile ignition module circuit, if only the light emitting diode LED2 flickers, the circuit is normal, otherwise, the circuit is abnormal. Since the terminal 3 is a 5V square wave, the LED2 will flash at the frequency of the square wave. Since zener diode D1 is not yet conducting, LED1 remains unlit.
Claims (10)
1. A multifunctional test pencil for automobile ignition module circuit diagnosis comprises a pencil body (1) and a pencil needle (2) arranged at the front end of the pencil body (1), wherein a diagnosis circuit is arranged in the pencil body (1), and a lead (3) used for grounding is arranged at the rear end of the pencil body (1), and is characterized in that the diagnosis circuit comprises a voltage stabilizing diode D1, a resistor R1, a resistor R2, a light emitting diode LED1 and a light emitting diode LED2, a junction of the voltage stabilizing diode D1 is connected with one end of a resistor R2 and then is connected with the pencil needle (2), an anode of the voltage stabilizing diode D1 is connected with an anode of a light emitting diode LED1 through a resistor R1, the other end of the resistor R2 is connected with an anode of the light emitting diode LED2, and a cathode of the light emitting diode LED1 is connected with one end of the lead (3) after being connected with a cathode of the light emitting diode LED 2.
2. The multifunctional pencil of claim 1, wherein the reverse breakdown voltage of said zener diode D1 is greater than or equal to 5.1V and less than 12V.
3. The multifunctional pencil of claim 2, wherein said zener diode D1 has a reverse breakdown voltage of 5.1V.
4. The multi-function pencil of claim 3 wherein said light emitting diode LED1 is red and said light emitting diode LED2 is yellow.
5. The multi-functional electrography for diagnosis of automotive ignition module circuit of claim 3, characterized in that resistance R1 and resistance R2 are both current limiting resistors.
6. The multifunctional electrography for automobile ignition module circuit diagnosis according to claim 3, characterized in that wire clamp is connected to the other end of wire (3).
7. The multifunctional pencil of claim 3 wherein said resistor R1 and resistor R2 have a resistance of 1K.
8. The multifunctional pencil for automobile ignition module circuit diagnosis as claimed in any one of claims 1-7, characterized in that when said pencil needle (2) is connected and conducted with the 12V power supply terminal of the automobile ignition module circuit, the wire is normal if said LED1 and LED2 are both normally on, otherwise, the wire is abnormal.
9. The multifunctional test pencil for automobile ignition module circuit diagnosis of claim 8, characterized in that when the pencil needle (2) is connected and conducted with the 5V ignition signal feedback end of the automobile ignition module circuit, if only the LED2 is normally lighted, the circuit is normal, otherwise, the circuit is abnormal.
10. The multifunctional electrography for diagnosing the automobile ignition module circuit of claim 9, characterized in that when the pen needle (2) is connected and conducted with the ignition signal end of the automobile ignition module circuit, if only the light emitting diode LED2 flickers, the circuit is normal, otherwise, the circuit is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121944709.9U CN215986370U (en) | 2021-08-18 | 2021-08-18 | Multifunctional test pencil for automobile ignition module circuit diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121944709.9U CN215986370U (en) | 2021-08-18 | 2021-08-18 | Multifunctional test pencil for automobile ignition module circuit diagnosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215986370U true CN215986370U (en) | 2022-03-08 |
Family
ID=80580541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121944709.9U Expired - Fee Related CN215986370U (en) | 2021-08-18 | 2021-08-18 | Multifunctional test pencil for automobile ignition module circuit diagnosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215986370U (en) |
-
2021
- 2021-08-18 CN CN202121944709.9U patent/CN215986370U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |