JP2021001771A - Circuit board and piece - Google Patents

Abstract

To enable malfunction diagnosis without using an actual vehicle.SOLUTION: A circuit board comprises: a piece arrangement portion for disposing a piece for simulating an electrical component of a vehicle having an upstream connection terminal on a power source side and a downstream connection terminal on a reference potential side; a power source terminal unit having a connection terminal in which operating power for the piece is connected to a power source, and a measurement terminal with the same potential as the power source; a reference potential terminal unit having a connection terminal connected to the reference potential, and a measurement terminal with the same potential as the reference potential; and a malfunction generating unit connected between two connection targets and that switches respective connection states of the two connection targets between a normal state and a malfunction state; wherein the malfunction generating unit is connected between the power source and the connection terminal of the power source terminal unit or between the connection terminal of the reference potential terminal unit and the reference potential.SELECTED DRAWING: Figure 1A

Description

The present invention relates to a device that simulates an automobile failure.

In the education of auto mechanics, etc., failure diagnosis training is conducted using automobiles in which the failure state is reproduced. For example, Patent Document 1 describes a malfunction state of an automobile injector, an operating device such as an ignition coil, a fuel pump, and an exhaust gas recirculation valve, and a sensor such as a crank angle sensor, a MAF sensor, an accelerator opening sensor, and a vehicle speed sensor. And devices that reproduce the failure state are disclosed.

JP-A-2018-205193

However, it is difficult to use an actual automobile when many people need to perform failure diagnosis at the same time, for example, when a test related to failure diagnosis is performed on many examinees.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to enable failure diagnosis without using an actual automobile.

In order to solve the above problems, the circuit board in the present invention has a piece arrangement for arranging pieces simulating electrical components of an automobile, which are provided with an upstream side connection terminal on the power supply side and a downstream side connection terminal on the reference potential side. The unit, the connection terminal connected to the power supply that supplies the operating power of the piece, the power supply terminal part having the measurement terminal of the same potential as the power supply, the connection terminal connected to the reference potential, and the same potential as the reference potential. It is provided with a reference potential terminal unit having a measurement terminal and a failure occurrence unit that is connected between two connection targets and switches the connection state of the two connection targets between a normal state and a failure state. The failure generating portion is connected between the power supply and the connection terminal of the power supply terminal portion, or between the connection terminal of the reference potential terminal portion and the reference potential. The failure state may be a state in which the connection between the two connection targets is disconnected, or a state in which the two connection targets are connected via a resistor. The circuit board further has a housing, and the measurement terminal of the power supply terminal portion and the measurement terminal of the reference potential terminal portion are arranged outside the housing, and the connection terminal of the power supply terminal portion and the reference potential The connection terminal of the terminal portion and the failure occurrence portion may be arranged inside the housing.

The piece in the present invention is a piece that is arranged in a piece arrangement portion of the circuit board and functions as a switch piece, and includes a switch connected between the upstream side connection terminal and the downstream side connection terminal.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a relay piece, and includes a first upstream side connection terminal and a second upstream side connection terminal as the upstream side connection terminal. As the downstream connection terminal, a first downstream connection terminal and a second downstream connection terminal are provided, and the first upstream connection terminal, the second upstream connection terminal, the first downstream connection terminal, and the first downstream connection terminal are provided. 2 A relay circuit unit connected between the downstream connection terminals and the failure occurrence unit are provided, and the relay circuit unit is connected between the first upstream side connection terminal and the first downstream connection terminal. The drive unit is provided with a switch connected between the second upstream side connection terminal and the second downstream connection terminal, and the switch opens and closes according to a current flowing through the drive unit.

The piece in the present invention is a piece that is arranged in a piece arrangement portion of the circuit board and functions as a lamp piece, and includes a lamp connected between the upstream side connection terminal and the downstream side connection terminal.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a throttle position sensor piece, and is a throttle whose opening degree is changed by an operation from the outside, the upstream side connection terminal, and the downstream side. A throttle sensor connected between the connection terminals and a signal line measurement terminal connected to the throttle sensor are provided, and the throttle sensor measures the opening degree of the throttle and measures the openedness of the measured throttle. The indicated signal is output to the signal line measurement terminal.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a vehicle speed sensor piece, and is a vehicle speed sensor portion connected between the upstream side connection terminal and the downstream side connection terminal. , A vehicle speed determination unit connected to the vehicle speed sensor unit to receive an input from the outside, an amplitude change unit connected to the vehicle speed sensor unit to receive an input from the outside, and a signal line measurement terminal connected to the amplitude change unit. The vehicle speed determination unit outputs a signal based on an input received from the outside to the vehicle speed sensor, and the vehicle speed sensor is a pulse signal having a pulse width based on the signal output from the vehicle speed determination unit. Is output to the amplitude changing unit, and the amplitude changing unit changes the amplitude of the pulse signal output from the vehicle speed sensor based on the input received from the outside, and the pulse signal with the changed amplitude is described. Output to the signal line measurement terminal.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a flasher piece, and includes a first upstream side connection terminal and a second upstream side connection terminal as the upstream side connection terminal. As the downstream connection terminal, a first downstream connection terminal and a second downstream connection terminal are provided, and the first upstream connection terminal, the second upstream connection terminal, the first downstream connection terminal, and the first downstream connection terminal are provided. 2. A flasher unit connected between the downstream connection terminals and the failure occurrence unit are provided, and the flasher unit is a current flowing between the first upstream connection terminal and the first downstream connection terminal. It controls whether or not a current flows from the second upstream side connection terminal to the second downstream side connection terminal according to the above, and converts the current input from the second upstream side connection terminal into a pulse signal. Then, the output is output to the second downstream connection terminal.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a combination switch piece, and has a first upstream side connection terminal and a second upstream side connection terminal as the upstream side connection terminal. A combination switch arranged between the first upstream side connection terminal, the second upstream side connection terminal, and the downstream side connection terminal, and the failure occurrence unit are provided, and the combination switch is the first. 1 A state in which the upstream side connection terminal and the downstream side connection terminal are connected, a state in which the second upstream side connection terminal and the downstream side connection terminal are connected, and a state in which the downstream side connection terminal is the first upstream side. It switches between a state in which neither the side connection terminal nor the second upstream side connection terminal is connected.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a hazard switch piece, and has a first upstream side connection terminal and a second upstream side connection terminal as the upstream side connection terminal. The hazard switch is provided with a hazard switch arranged between the first upstream side connection terminal, the second upstream side connection terminal, and the downstream side connection terminal, and the failure occurrence unit, and the hazard switch is the first. 1 In a state where the upstream side connection terminal, the second upstream connection terminal, and the downstream side connection terminal are connected, and the downstream side connection terminal is both the first upstream side connection terminal and the second upstream side connection terminal. Switch between the disconnected state and the state.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a center piece, and is a lamp connected between the upstream side connection terminal and the downstream side connection terminal, and the failure. It is provided with a generating unit.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as an accelerator position sensor piece, and is an accelerator whose position is changed by an operation from the outside, and the upstream side connection terminal and the downstream side connection. The accelerator position sensor includes an accelerator position sensor connected between the terminals, a signal line measurement terminal connected to the accelerator position sensor, and a failure occurrence unit, and the accelerator position sensor measures the position of the accelerator and said that the accelerator position sensor is provided. Outputs a signal indicating the measured accelerator position.

The piece in the present invention is a piece that is arranged in the piece arrangement portion of the circuit board and functions as a vacuum sensor piece, and is a vacuum sensor connected between the upstream side connection terminal and the downstream side connection terminal. The vacuum sensor includes a signal line measurement terminal connected to the vacuum sensor and the failure occurrence unit, and the vacuum sensor measures the pressure and outputs a signal based on the measured pressure to the signal line measurement terminal.

According to the present invention, it is possible to perform failure diagnosis without using an actual automobile.

FIG. 1A is a block diagram of a circuit board according to an embodiment of the present invention. It is a figure which shows an example of the power supply terminal part 110. It is a figure which shows an example of the reference potential terminal part 120. It is a figure which shows an example of the failure occurrence part 200. It is a figure which shows an example of the failure occurrence part 200. It is a figure which shows an example of the failure occurrence part 200. It is a figure which shows an example of the housing 300. It is a figure which shows an example of a switch piece 410, a relay piece 420, and a lamp piece 430. It is a figure which shows an example of a lamp lighting circuit. It is a figure which shows an example of the throttle position sensor piece 500. It is a figure which shows an example of a throttle position sensor circuit. It is a figure which shows an example of a vehicle speed sensor piece 600. It is a figure which shows an example of a vehicle speed sensor circuit. It is a figure which shows an example of a flasher piece 710, a combination switch piece 720, a hazard switch piece 730, and a center piece 740. It is a figure which shows an example of a flasher circuit. It is a figure which shows an example of a flasher piece 710. It is a figure which shows an example of the combination switch piece 720 and the hazard switch piece 730. It is a figure which shows an example of the centerpiece 740. It is a figure which shows the relationship between the top view of the automobile displayed on the surface of the centerpiece 740, and the lamps 7411 and 7421. It is a figure which shows an example of the accelerator position sensor piece 800. It is a figure which shows an example of an accelerator position sensor circuit. It is a figure which shows an example of a vacuum sensor piece 900. It is a figure which shows an example of a vacuum sensor circuit.

<Circuit board 100>
FIG. 1A is a block diagram of a circuit board 100 according to an embodiment of the present invention. The circuit board 100 supplies the power supply terminal unit 110, the reference potential terminal unit 120, the piece arrangement unit 130, the 12V power supply unit 140 that supplies the voltage of 12V to the power supply terminal unit 110, and the voltage of 5V to the power supply terminal unit 110. It has a 5V power supply unit 150 and the like.

As described in FIG. 1B, the power supply terminal portion 110 has a connection terminal 111 and a measurement terminal 112. The connection terminal 111 is connected to the 12V power supply unit 140 or the 5V power supply unit 150. Further, the connection terminal 111 is connected to a connection terminal on the power supply side (upstream side) of a piece that is arranged in the piece arrangement unit 130 and that simulates an electric component of an automobile such as a switch piece 410 described later. The measurement terminal 112 has the same potential as the voltage supplied by the 12V power supply unit 140 or the 5V power supply unit 150, and is a terminal for a person who measures the voltage or the like to apply a probe of a measuring instrument such as a tester or an oscilloscope. ..

The embodiment shown in FIG. 1B has four connection terminal portions 111 and measurement terminals 112, but the number of connection terminal portions 111 and measurement terminals 112 is not limited to four. Further, in FIG. 1B, three connection terminals 111 are connected to the 12V power supply unit 140, and one connection terminal 111 is connected to the 5V power supply unit 150, but the number of connection terminals 111 connected to the 12V power supply unit 140. Is not limited to 3, and the number of connection terminals 111 connected to the 5V power supply unit 150 is not limited to 1.

As described in FIG. 1C, the reference potential terminal portion 120 includes a connection terminal 121 for connecting the connection terminals of the pieces arranged in the piece arrangement portion 130, a measurement terminal 122 having the same potential as the reference potential, and a failure occurrence. It has a unit 200 and.

The failure occurrence unit 200 is connected between two connection targets, and switches the connection state of the two connection targets between a normal state and a failure state such as disconnection. That is, in the reference potential terminal unit 120, the failure occurrence unit 200 is connected between the connection terminal 121 and the reference potential, and the connection state between the connection terminal 121 and the reference potential is defined as a normal state and a failure state. Switch between. In the embodiment shown in FIG. 1B, the power supply terminal unit 110 does not have the failure occurrence unit 200, but the power supply terminal unit 110 may also have the failure occurrence unit 200. By doing so, the connection state between the power supply connected to the power supply terminal portion 110 and the piece can also be switched between a normal state and a failure state.

The embodiment shown in FIG. 1C has four connection terminals 121, a measurement terminal 122, and a failure occurrence unit 200, but the number of connection terminals 121, measurement terminals 122, and failure occurrence unit 200 is limited to four. Absent.

Since the circuit board 100 of the present invention has the above configuration, various pieces are prepared as pieces to be arranged in the piece arranging unit 130 as described later, and by combining these pieces, a failure diagnosis is performed. It is possible to create circuits that simulate various electrical components of automobiles for testing and training.

Further, as described in FIG. 1A, the circuit board 100 includes a voltage conversion unit 160 that converts a 12V voltage supplied from the 12V power supply unit 140 into a 5V voltage and supplies the voltage to the 5V power supply unit 150, a commercial power supply, and the like. It is provided with an AC connection unit 170 having a terminal for connecting to the AC power supply, an AC / DC conversion unit 180 that converts AC into a DC voltage of 12V and supplies it to the 12V power supply, and a terminal for connecting to the DC power supply. It may also have a DC connection unit 190. The 12V power supply unit 140 receives a voltage of 12V by connecting to the AC / DC conversion unit 180 or the DC connection unit 190.

<Failure occurrence unit 200>
As described above, the failure generation unit 200 is connected between the two connection targets, and switches the connection state of the two connection targets between the normal state and the failure state. The failure generation unit 200 may be configured by, for example, the circuit shown in FIG. 2A. The circuit shown in FIG. 2A has a switch 210. By doing so, when the switch 210 is closed, the two connection targets are connected to each other in a normal state, but when the switch 210 is open, the connection between the two connection targets is disconnected. It becomes.

Further, as described in FIG. 2B, the failure generation unit 200 may be configured by a circuit having a switch 220 and a resistor 230. In this circuit, the switch 220 can switch between two paths, one in which the two connection targets are connected without the resistor 230 and the other in which the two connection targets are connected via the resistor 230. By doing so, when the two connection targets are switched to the path to be connected without passing through the resistor 230, the normal state of being directly connected to the two connection targets is obtained, but the two connection targets are connected. When the path is switched to the reference potential via the resistor 230, the resistance between the two connection targets increases, resulting in a failure state such as poor contact between the piece and the reference potential. Become.

Further, as described in FIG. 2C, the failure occurrence unit 200 may be configured by a circuit having a pair of the switch 220, the upstream side connection terminal 240, and the downstream side connection terminal 250. By doing so, when nothing is connected between the upstream side connection terminal 240 and the downstream side connection terminal 250, there are two, as in the circuit having only the switch 210 shown in FIG. 2A. It is possible to switch between a normal state in which the connection target is connected and a failure state in which the connection between the two connection targets is disconnected. When a resistor is connected between the upstream connection terminal 240 and the downstream connection terminal 250, it is between the two connection targets, as in the circuit having the switch 220 and the resistor 230 shown in FIG. 2B. The connection state can be switched between a normal state in which the two connection targets are directly connected and a failure state in which the resistance increases between the two connection targets.

<Case 300>
The circuit board 100 may have a housing 300 as shown in FIG. A measurement terminal 112 of the power supply terminal portion 110 and a measurement terminal 122 of the reference potential terminal portion 120 are arranged on the surface of the housing 300. For example, in FIG. 3, the six measurement terminals 112 on the left side have the same potential as the voltage 12V supplied from the 12V power supply unit 140, and the one measurement terminal 112 on the far right side has a voltage of 5V supplied from the 5V power supply unit 150. The six measurement terminals 112 on the left side are labeled as "12V" and the one measurement terminal 112 on the far right is labeled as "5V" to indicate this. Has been done. Further, in FIG. 3, the measurement terminal 122 is labeled as “GND” so as to indicate that the measurement terminal 122 has a reference potential.

Further, in the housing 300 shown in FIG. 3, the piece arrangement portion 130 is formed as six piece arrangement areas 310, and various pieces described in detail below are arranged in the piece arrangement area 310. Further, when arranging the pieces, the measurement terminals of the pieces, which will be described later, are arranged in a portion of the pieces that can be seen from the outside of the housing 300.

On the other hand, the connection terminal 111 of the power supply terminal portion 110 and the connection terminal 121 of the reference potential terminal portion 120 are arranged inside the housing 300. Similarly, when arranging the pieces, the connection terminals of the pieces, which will be described later, are arranged in a portion of the pieces that is not viewed from the outside of the housing 300. Therefore, from the outside of the housing 300, it is not possible to visually recognize from the outside of the housing 300 whether the connection terminals of the power supply terminal portion 110 and the reference potential terminal portion 120 are connected to the connection terminals of the piece. For this reason, the measurement terminals 112 arranged on the surface of the housing 300 are provided to a person who does not connect the terminals inside the housing 300, causes a failure state of disconnection, and undergoes a failure diagnosis test or training. By measuring the voltage or the like using 122 or the measurement terminal of the piece described later, it is possible to perform a failure diagnosis test or training without using an actual automobile.

In addition, the failure generation unit 200 is also arranged inside the housing 300. Therefore, it is not possible to confirm from the outside of the housing 300 whether the failure generation unit 200 has been switched to the normal state or the failure state. Therefore, inside the housing 300, the failure occurrence unit 200 is switched to a failure state such as a disconnection, and the measurement terminals 112 and 122 arranged on the surface of the housing 300 and the measurement terminals of the pieces described later are used to obtain a voltage and the like. By having them measure the voltage, it becomes possible to carry out failure diagnosis tests and training without using an actual automobile.

Further, a positive terminal 320 and a negative terminal 330 of the DC connection portion 190 are arranged on the surface of the housing 300, and by connecting a 12V DC power supply to the positive terminal 320 and the negative terminal 330, the 12V power supply unit 140 It becomes possible to supply a voltage of 12V to.

<Lamp lighting circuit>
As described in FIG. 4A, the switch piece 410, the relay piece 420, and the lamp piece 430 are arranged in the piece arrangement portion 130 of the circuit board 100 to form a lamp lighting circuit as shown in FIG. 4B. be able to.

The switch piece 410 has a switch 411, an upstream connection terminal 412 connected to the connection terminal 111 of the power supply terminal 110, and a downstream connection terminal 413. Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as each connection terminal of the switch piece 410 and the upstream side and the downstream side of the switch 411 according to the test and training to be performed. ..

The relay piece 420 includes a relay circuit unit 421, a first upstream connection terminal 422 connected to the downstream connection terminal 413 of the switch piece 410, and a second upstream switch connection terminal 423 connected to the connection terminal 111 of the power supply terminal 110. And a first downstream side connection terminal 424 connected to the connection terminal 121 of the reference potential terminal portion 120, and a second downstream side connection terminal 425. A relay circuit unit 421 is connected between the first upstream side connection terminal 422 and the first downstream side connection terminal 424, and between the second upstream side connection terminal 422 and the second downstream side connection terminal 425. The embodiment described in FIG. 4A has two second upstream connection terminals 423 and a second downstream connection terminal 425, but the number of second upstream connection terminals 423 and second downstream connection terminals 425. Is not limited to 2.

The relay circuit unit 421 is located between the second upstream side connection terminal 422 and the second downstream side connection terminal 425 by the current flowing through the drive unit between the first upstream side connection terminal 422 and the first downstream side connection terminal 423. It contains a relay circuit that controls the opening and closing of the switch connected to. The relay circuit unit 421 is composed of, for example, a mechanical relay, a semiconductor relay, or the like.

Further, although not shown, the measurement terminals have the same potential as the connection terminals of the relay piece 420, the drive unit of the relay circuit 421, and the upstream side and the downstream side of the switch according to the test and training to be performed. It is arranged as appropriate.

Further, the above-mentioned failure generation unit 200 is connected between the relay circuit unit 421 and the second downstream side connection terminal 425. As a result, the connection state between the relay circuit unit 421 and the second downstream side connection terminal 425 can be switched between the normal state and the failure state.

The lamp piece 430 includes a lamp 431, an upstream connection terminal 432 connected to the second downstream connection terminal 425 of the relay piece 420, and a downstream connection terminal 433 connected to the connection terminal 121 of the reference potential terminal portion 120. Have. The lamp 431 is connected between the upstream connection terminal 432 and the downstream connection terminal 433, and is, for example, a bulb. The embodiment shown in FIG. 4A has two lamps 431, an upstream connection terminal 422, and a downstream connection terminal 433, but the number of lamps 431, upstream connection terminals 422, and downstream connection terminals 433. Is not limited to 2.

Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as each connection terminal of the lamp piece 430 and the upstream side and the downstream side of the lamp 431 according to the test and training to be performed. ..

By arranging the switch piece 410, the relay piece 420, and the lamp piece 430 on the circuit board 100 as described above, the lamp lighting circuit as shown in FIG. 4B can be made, and the lamp lighting circuit can be formed. It is possible to perform tests and trainings for failure diagnosis with a device with a simple configuration without using an actual vehicle.

For example, in the lamp lighting circuit composed of the circuit board 100 and the piece as described above, the lamp 431 cannot be turned on by switching the failure occurrence unit 200 to the failure state or by not connecting the connection terminals. Or, it is possible to create a failure state in which the brightness of the lamp 431 is reduced. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measurement terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measurement terminal arranged on the housing 300, and the circuit throat. In this embodiment, the failure diagnosis test and training of the lamp lighting circuit can be performed without using an actual automobile or the like by confirming whether or not a failure has occurred at the position.

For example, the failure occurrence unit 200 of the reference potential terminal unit 120 downstream of the lamp 431 is configured by the circuit shown in FIG. 2B, and the connection terminal 131 of the reference potential terminal unit 120 is connected to the reference potential via the resistor 230. By switching to the path and allowing the current to pass through the resistor 230, a failure state can be artificially created between the lamp 431 and the reference potential, and the brightness of the lamp 431 drops.

The position where the failure occurrence unit 200 is connected is not limited to that shown in FIG. 4A, and may be connected between another member and the connection terminal. By doing so, it is possible to switch between the normal state and the failure state also between the member and the connection terminal.

In the above example, the switch piece 410, the relay piece 420, and the lamp piece 430 are separate pieces, but these pieces may be configured as one piece.

<Throttle position sensor>
By arranging the throttle position sensor piece 500 in the piece arranging portion 130 of the circuit board 100 as described in FIG. 5A, the throttle position sensor circuit as described in FIG. 5B can be simulated.

The throttle position sensor piece 500 includes a throttle position sensor 510, an upstream connection terminal 520 connected to the connection terminal 111 of the power supply terminal 110, and a downstream connection terminal 530 connected to the connection terminal 121 of the reference potential terminal 120. It has a signal line measurement terminal 540, an idle contact measurement terminal 550, and a throttle 560. Further, although not shown, the measurement terminals are set to have the same potential as each connection terminal of the throttle position sensor piece 500 and the upstream side and the downstream side of the throttle position sensor 510 according to the test and training to be performed. Arranged as appropriate.

The throttle position sensor 510 is a sensor that measures the opening degree of the throttle 560 operated by a person who undergoes a failure diagnosis test or training, and sends a signal indicating the measured opening degree of the throttle 560 to the signal line measurement terminal 540. Output.

The idle contact measurement terminal 550 is connected to the idle contact of the throttle position sensor 510. The idle contact is a switch that is ON when the throttle 560 is fully closed and turns OFF when the throttle 560 is opened even a little if there is no failure. The timing at which the idle contact is turned on changes by changing the mounting position of the throttle position sensor 510. If the mounting position of the throttle position sensor 510 is incorrect, the idle contact will not be turned on even if the throttle 560 is fully closed, resulting in a failure state.

By arranging the throttle position sensor piece 500 on the piece arranging portion 130 of the circuit board 100 as described above, the throttle position sensor circuit as shown in FIG. 5B can be simulated, and the throttle position sensor circuit can be formed. Failure diagnosis tests and training can be performed with a device with a simple configuration without using an actual automobile or the like.

For example, in the throttle position sensor circuit composed of the circuit board 100 and the piece as described above, the failure occurrence unit 200 is switched to the failure state, the connection terminals are not connected, and the mounting position of the throttle position sensor is changed. As a result, it is possible to create a failure state in which the sensor does not operate, a failure state in which the idle contact does not turn ON even when the throttle is fully closed, and the like. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measuring terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measuring terminal arranged on the housing 300, and the circuit throat. In this embodiment, the failure diagnosis test and training of the throttle position sensor circuit can be performed without using an actual vehicle or the like by making it confirmed whether or not a failure has occurred at the position. ..

<Vehicle speed sensor circuit>
As described in FIG. 6A, by arranging the vehicle speed sensor piece 600 in the piece arranging portion 130 of the circuit board 100, the vehicle speed sensor circuit as described in FIG. 6B can be simulated.

The vehicle speed sensor piece 600 includes a vehicle speed sensor unit 610, an upstream side connection terminal 620 connected to the connection terminal 111 of the power supply terminal unit 110, a downstream side connection terminal 630 connected to the connection terminal 121 of the reference potential terminal unit 120, and a vehicle speed. It has a determination unit 640 and a vehicle speed measurement terminal 650. Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as each connection terminal of the vehicle speed sensor piece 600 and the upstream side and the downstream side of the vehicle speed sensor 610 according to the test and training to be performed. Will be done.

The vehicle speed determination unit 640 receives an input from a person who conducts a failure diagnosis test or training, and outputs a signal based on the received input to the vehicle speed sensor unit 610. The vehicle speed sensor unit 610 outputs a pulse signal having a pulse width based on the signal received from the vehicle speed determination unit 640. The change in the pulse width of the pulse signal output by the vehicle speed sensor unit 610 is a pseudo representation of the vehicle speed measured by the vehicle speed sensor of an actual automobile.

The embodiment shown in FIG. 6A has two vehicle speed sensor units 610. For example, one of the two vehicle speed sensor units 610 outputs a pulse signal in which the number of pulses generated per rotation of the drive shaft is eight, and one of the two vehicle speed sensor units 610 drives. A pulse signal in which the number of pulses generated per rotation of the shaft is 25 is output.

An amplitude changing unit 660 is arranged between the vehicle speed sensor unit 610 and the vehicle speed measuring terminal 650. The amplitude changing unit 660 can receive an input from the outside, changes the amplitude of the pulse signal output from the vehicle speed sensor unit 610 based on the input from the outside, and changes the amplitude of the pulse signal. Is output to the vehicle speed measurement terminal 6050. For example, the amplitude changing unit 660 is a variable resistor. This makes it possible to make the signal output to the vehicle speed measurement terminal 650 weaker than the signal output from the vehicle speed sensor unit 610. That is, it is possible to create a pseudo failure state between the vehicle speed sensor unit 610 and the vehicle speed measurement terminal 650.

By arranging the vehicle speed sensor piece 600 on the piece arranging portion 130 of the circuit board 100 as described above, the vehicle speed sensor circuit as shown in FIG. 6B can be simulated, and the failure diagnosis of the vehicle speed sensor circuit can be performed. Tests and training can be performed with a device with a simple configuration without using an actual automobile.

For example, in the vehicle speed sensor circuit composed of the circuit board 100 and the piece as described above, the failure occurrence unit 200 can be switched to the failure state, the amplitude change unit 660 can change the amplitude of the pulse signal, and each connection terminal. By not connecting between them, it is possible to create a failure state in which the sensor does not operate, a failure state in which the amplitude of the pulse signal becomes small, and the like. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measurement terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measurement terminal arranged on the housing 300, and the circuit throat. By making it confirmed whether or not a failure has occurred at the position, in the present embodiment, it is possible to perform a failure diagnosis test and training of the vehicle speed sensor circuit without using an actual automobile or the like.

<Flasher circuit>
As described in FIG. 7A, the flasher piece 710, the combination switch piece 720, the hazard switch piece 730, and the center piece 740 are arranged in the piece arrangement portion 130 of the circuit board 100 to be described in FIG. 7B. You can make a flasher circuit like this.

As described in FIG. 7C, the flasher piece 710 is connected to the flasher unit 711, the first upstream connection terminal 712 connected to the connection terminal 111 of the power supply terminal portion 110, and the connection terminal 111 of the power supply terminal portion 110. 2 Upstream connection terminal 713, first switch connection terminal 714 and second switch connection terminal 715 connected to the combination switch piece 720 and hazard switch piece 730, and first lamp connection terminal connected to the center piece 740. It has a 716 and a second lamp connection terminal 717.

The flasher unit 711 has two connection terminals 711a and 711b on the upstream side and four connection terminals 711c, 711d, 711e and 711f on the downstream side. The flasher unit 711 controls whether or not a current flows from the upstream connection terminal 711b to the downstream connection terminal 711e according to the current flowing from the upstream connection terminal 711a to the downstream connection terminal 711c, and controls whether or not a current flows from the upstream connection terminal 711b to the downstream connection terminal 711e. It controls whether or not a current flows from the upstream side connection terminal 711b to the downstream side connection terminal 711f according to the current flowing from the downstream side connection terminal 711d. Further, the flasher unit 711 converts the current input from the upstream side connection terminal 711b into a pulse signal and outputs it from the downstream side connection terminals 711e and 711f.

In FIG. 7C, the first upstream side connection terminal 712 is connected to the upstream side connection terminal 711a of the flash unit 711, and the second upstream side connection terminal 713 is connected to the upstream side connection terminal 711b of the flash unit 711. The first switch connection terminal 714 is connected to the downstream connection terminal 711c of the flash unit 711, and the second switch connection terminal 715 is connected to the downstream connection terminal 711d of the flash unit 711. The first lamp connection terminal 716 is connected to the downstream connection terminal 711e of the flash unit 711, and the second lamp connection terminal 717 is connected to the downstream connection terminal 711f of the flash unit 711.

Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as the connection terminals of the flasher piece 710 and the connection terminals of the flasher unit 711 according to the test or training to be performed.

The above-mentioned failure occurrence unit 200 includes a first upstream side connection terminal 712, a second upstream side connection terminal 713, a first lamp connection terminal 716, a second lamp connection terminal 717, a first switch connection terminal 714, and a second switch connection terminal. It is connected between each of the 715s and the flasher unit 711.

In FIG. 7C, for example, four connection terminals 711c, 711d, 711e, and 711f are provided on the downstream side of the flasher unit 711, but instead, two connection terminals 711g and 711h are provided on the downstream side so as to be upstream. It may be possible to control whether or not a current flows from the upstream side connection terminal 711b to the downstream side connection terminal 711h according to the current flowing from the side connection terminal 711a to the downstream side connection terminal 711g.

As described in FIG. 7D, the combination switch piece 720 includes a combination switch 721, a first upstream connection terminal 722 connected to the first switch connection terminal 714, and a second upstream side connected to the second switch connection terminal 715. It has a connection terminal 723 and a downstream connection terminal 724 connected to the connection terminal 121 of the reference potential terminal portion 736.

The combination switch 721 has two connection terminals 721a and 721b on the upstream side and one connection terminal 721c on the downstream side. The combination switch 721 has two upstream connection terminals, one is a state in which the upstream connection terminal 721a and the downstream connection terminal 721c are connected, the other is a state in which the upstream connection terminal 721b and the downstream connection terminal 721c are connected. It is a switch that switches between a state in which neither the side connection terminals 721a and 721b are connected.

In FIG. 7D, the first upstream side connection terminal 722 is connected to the upstream side connection terminal 721a of the combination switch 721, the second upstream side connection terminal 723 is connected to the upstream side connection terminal 721b of the combination switch 721, and the downstream side connection terminal is connected. 724 is connected to the downstream connection terminal 721c of the combination switch 721.

Therefore, when the combination switch 721 is switched to the state where the upstream side connection terminal 721a and the downstream side connection terminal 721c are connected, the 12V power supply unit 140 and the reference potential are set to the first upstream side connection terminal 712 of the flasher piece 710. , The flasher unit 711, the first switch connection terminal 714, the first upstream side connection terminal 722 of the combination switch piece 720, the combination switch 721, and the downstream side connection terminal 724 (FIGS. 7A, 7C, 7D). As a result, in the flasher unit 711, a current flows from the first upstream side connection terminal 712 to the first switch connection terminal 714, and a pulse current is output from the flash unit 711 to the first lamp connection terminal 716.

When the combination switch 721 is switched to a state in which the upstream side connection terminal 721b and the downstream side connection terminal 721c are connected, the 12V power supply unit 140 and the reference potential are set to the first upstream side connection terminal 712 of the flasher piece 710. , The flasher unit 711, the second switch connection terminal 715, the second upstream side connection terminal 723 of the combination switch piece 720, the combination switch 721, and the downstream side connection terminal 724 (FIGS. 7A, 7C, 7D). As a result, in the flasher unit 711, a current flows from the first upstream side connection terminal 712 to the second switch connection terminal 715, and a pulse current is output from the flash unit 711 to the second lamp connection terminal 717.

Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as each connection terminal of the combination switch piece 720 and each connection terminal of the combination switch 721 according to the test or training to be performed. ..

Further, in the embodiment shown in FIG. 7D, the above-mentioned failure occurrence unit 200 is connected between each of the first upstream side connection terminal 722, the second upstream side connection terminal 723, and the downstream side connection terminal 724 and the combination switch 721. Has been done.

As described in FIG. 7D, the hazard switch unit 730 includes a hazard switch 731, a first upstream connection terminal 732 connected to the first switch connection terminal 714, and a second upstream side connected to the second switch connection terminal 715. It has a connection terminal 733 and a downstream connection terminal 734 that connects to the connection terminal 121 of the reference potential terminal portion 736. Further, the hazard switch unit 730 has a lamp 735 connected in parallel with the downstream connection terminal 734, and a lamp connection terminal 736 connected to the lamp 735 and the connection terminal 12 of the reference potential terminal unit 120.

The hazard switch 731 has two connection terminals 731a and 731b on the upstream side and one connection terminal 731c on the downstream side. The hazard switch 731 is either in a state where both the upstream connection terminal 731a and the upstream connection terminal 731b are connected to the downstream connection terminal 731c, or in a state where the downstream connection terminal 731c has two upstream connection terminals 731a and 731b. It is a switch that switches between the state where it is not connected and the state where it is not connected.

In FIG. 7D, the first upstream side connection terminal 732 is connected to the upstream side connection terminal 731a of the hazard switch 731, the second upstream side connection terminal 733 is connected to the upstream side connection terminal 731b of the hazard switch 731, and the downstream side connection terminal is connected. 734 is connected to the downstream connection terminal 731c of the hazard switch 731.

Therefore, when the hazard switch 731 is switched to a state in which both the upstream connection terminal 731a and the upstream connection terminal 733b and the downstream connection terminal 731c are connected, the 12V power supply unit 140 and the reference potential are set to the flasher piece. It is connected via the first upstream connection terminal 712 of the 710, the flasher unit 711, the first switch connection terminal 714, the first upstream connection terminal 732 of the hazard switch piece 730, the hazard switch 731, and the downstream connection terminal 734. The lines of the first upstream side connection terminal 712 of the flasher piece 710, the flasher unit 711, the second switch connection terminal 715, the second upstream side connection terminal 733 of the hazard switch piece 730, the hazard switch 731, and the downstream side connection terminal 734 are connected. They are connected via (FIGS. 7A, 7C, 7D). As a result, in the flasher unit 711, a current flows from the first upstream side connection terminal 712 to both the first switch connection terminal 714 and the second switch connection terminal 715, and both the first lamp connection terminal 716 and the second lamp connection terminal 717 The pulse current is output to.

Further, when the hazard switch 731 is switched to a state in which both the upstream side connection terminal 731a and the upstream side connection terminal 733b and the downstream side connection terminal 731c are connected, a current flows through the lamp 735 and the lamp 735 lights up. To do.

Further, although not shown, the measurement terminal has the same potential as each connection terminal of the hazard switch piece 730, each connection terminal of the hazard switch 731, the downstream side of the lamp 735, etc. according to the test or training to be performed. It is arranged as appropriate.

Further, in the embodiment shown in FIG. 7D, the above-mentioned failure occurrence unit 200 is connected between each of the first upstream side connection terminal 732, the second upstream side connection terminal 733, and the downstream side connection terminal 734 and the hazard switch 735. Has been done. Further, the above-mentioned failure generation unit 200 is connected between the lamp 735 and the lamp connection terminal 736.

The centerpiece 740 has a meter section 7410 and four turn signal lamp sections 7420, as described in FIG. 7E.

The meter unit 7410 has two lamps 7411, a first upstream connection terminal 7412 connected to the first lamp connection terminal 716 of the flasher piece 710, and a second upstream side connected to the second lamp connection terminal 717 of the flasher piece 710. It has a connection terminal 7413 and a downstream connection terminal 7414 connected to the connection terminal 121 of the reference potential terminal portion 120, and one of the two lamps is a first upstream connection terminal 7412 and a downstream connection terminal. It is connected between the 7414 and the remaining one of the two lamps is connected between the second upstream connection terminal 7412 and the downstream connection terminal 7414.

Each of the turn signal lamp units 7420 has a lamp 7421, an upstream connection terminal 7422, and a downstream connection terminal 7423 connected to the connection terminal 121 of the reference potential terminal 120, and the lamp 7421 is connected to the upstream side. It is connected between the terminal 7422 and the downstream connection terminal 7423. Two upstream connection terminals 7422 of the four turn signal units 7420 are connected to the first lamp connection terminal 716 of the flasher piece 710, and the remaining two upstream sides of the four turn signal units 7420 The connection terminal portion 7422 is connected to the second lamp connection terminal 717 of the flasher piece 710.

Further, although not shown, the measurement terminals are appropriately arranged so as to have the same potential as the connection terminals of the centerpiece 740 and the upstream side and the downstream side of the lamps 7411 and 7421 according to the test and training to be performed. Will be done.

Further, the above-mentioned failure occurrence unit 200 is connected between the lamp 7421 of the turn signal lamp 7420 and the upstream connection terminal 7422, and between the downstream connection terminal 7423 and the lamp 7421.

Therefore, when a pulse current is output from the first lamp connection terminal 716 of the flasher piece 710, the lamps 7411 and 7421 downstream of the first lamp connection terminal 716 blink, and the second lamp connection terminal 717 of the flasher piece 710 flashes. When the pulse current is output, the lamps 7411 and 7421 located downstream of the second lamp connection terminal 717 blink.

As described above, by arranging the flasher piece 710, the combination switch piece 720, the hazard switch piece 730, and the center piece 740 in the piece arrangement portion 130 of the circuit board 100, the flasher as shown in FIG. 7B. The circuit can be made in a pseudo manner. Then, the two lamps 7411 of the meter unit 7410 and the lamps 7421 of the four turn signal lamp units 7420 are displayed on the surface of the center piece 740 so as to be visible from the outside of the housing 300, for example, as shown in FIG. 7F. By arranging it so that it overlaps the top view of the car, it is possible to perform test and training of failure diagnosis of the flasher circuit with a device with a simple configuration without using an actual car. Become.

For example, in the flasher circuit composed of the circuit board 100 and the piece as described above, by switching the failure occurrence unit 200 to the failure state or by not connecting each connection terminal, the lamp 7421 and the turn signal of the meter unit 7410 can be used. It is possible to create a failure state in which the lamp 7421 of the lamp unit 7420 and the lamp 735 of the hazard switch piece 730 are not lit, or a failure state in which the brightness of these lamps is reduced. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measurement terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measurement terminal arranged on the housing 300, and the circuit throat. In this embodiment, the failure diagnosis test and training of the flasher circuit can be performed without using an actual automobile or the like by confirming whether or not a failure has occurred at the position.

The position where the failure occurrence unit 200 is connected is not limited to that shown in FIG. 7C-7E, and may be connected between another member and the connection terminal. By doing so, it is possible to switch between the normal state and the failure state also between the member and the connection terminal.

In the above example, the flasher piece 710, the combination switch piece 720, the hazard piece 730, and the center piece 740 are separate pieces, but these pieces may be configured as one piece.

<Accelerator position sensor circuit>
By arranging the accelerator position sensor piece 800 on the piece arranging portion 130 of the circuit board 100 as described in FIG. 8A, the accelerator position sensor circuit as described in FIG. 8B can be simulated.

The accelerator position sensor piece 800 has two sensor units 810 and an accelerator 820. Each of the sensors 810 includes an accelerator position sensor 811, an upstream connection terminal 812 connected to the connection terminal 111 of the power supply terminal 110, and a downstream connection terminal 813 connected to the connection terminal 121 of the reference potential terminal 120. It has a signal line measurement terminal 814. Further, although not shown, the measurement terminals are set to have the same potential as each connection terminal of the accelerator position sensor piece 800 and the upstream side and the downstream side of the accelerator position sensor 811 according to the test and training to be performed. Arranged as appropriate.

The accelerator 820 is operated by, for example, a person who receives a failure diagnosis test or training, and the position of the operated accelerator 820 is measured by the accelerator position sensor 811. Then, a signal indicating the measured position of the accelerator 820 is output to the signal line measurement terminal 814. Although the embodiment shown in FIGS. 8A and 8B has two sensor units 810, the number of sensor units 810 is not limited to two.

Further, the above-mentioned failure occurrence unit 200 is connected between each of the upstream side connection terminal 812, the downstream side connection terminal 813, the signal line measurement terminal 814, and the accelerator position sensor 811.

By arranging the accelerator position sensor piece 800 on the piece arrangement portion 130 of the circuit board 100 as described above, the accelerator position sensor circuit as shown in FIG. 8B can be simulated, and the accelerator position sensor circuit can be formed. Failure diagnosis tests and training can be performed with a device with a simple configuration without using an actual automobile.

For example, in the accelerator position sensor circuit composed of the circuit board 100 and the piece as described above, the failure state that the sensor does not operate by switching the failure occurrence unit 200 to the failure state or not connecting the connection terminals. Or, it is possible to create a failure state in which the signal indicating the accelerator position is weakened. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measuring terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measuring terminal arranged on the housing 300, and the circuit throat. In this embodiment, the failure diagnosis test and training of the accelerator position sensor circuit can be performed without using an actual automobile or the like by letting the user confirm whether or not a failure has occurred at the position. ..

The position where the failure occurrence unit 200 is connected is not limited to that shown in FIG. 8A, and may be connected between another member and the connection terminal. By doing so, it is possible to switch between the normal state and the failure state also between the member and the connection terminal.

<Vacuum sensor circuit>
By arranging the vacuum sensor piece 900 in the piece arranging portion 130 of the circuit board 100 as described in FIG. 9A, the vacuum sensor circuit as described in FIG. 9B can be simulated.

The vacuum sensor piece 900 includes a vacuum sensor unit 910, an upstream connection terminal 920 connected to the connection terminal 112 of the power supply terminal unit 110, a downstream connection terminal 930 connected to the connection terminal 131 of the reference potential terminal unit 120, and a signal. It has a wire measuring terminal 940 and. Further, although not shown, the measurement terminals are appropriately set to have the same potential as the connection terminals of the vacuum sensor piece 900 and the upstream side and the downstream side of the vacuum sensor unit 910 according to the test and training to be performed. Be placed.

The vacuum sensor unit 910 has a vacuum sensor and a hose connection port, and for example, a hand vacuum pump or the like can be connected to the hose connection port via a hose. Then, the pressure applied by the hand vacuum pump or the like is measured by the vacuum sensor, and a signal indicating the measured pressure is output to the signal line measurement terminal 940.

Further, the above-mentioned failure generation unit 200 is connected between the vacuum sensor unit 910 and the signal line measurement terminal 940.

By arranging the vacuum sensor piece 900 on the piece arranging portion 130 of the circuit board 100 as described above, the vacuum sensor circuit as shown in FIG. 9B can be simulated, and the failure diagnosis of the vacuum sensor circuit can be performed. Tests and training can be performed with a device with a simple configuration without using an actual automobile.

For example, in the vacuum sensor circuit composed of the circuit board 100 and the piece as described above, the failure state that the sensor does not operate by switching the failure occurrence unit 200 to the failure state or by not connecting the connection terminals. , It is possible to create a failure state in which the signal indicating the pressure becomes weak. Then, a person who undergoes a failure diagnosis test or training is made to measure the voltage between the measuring terminals by applying a probe of a measuring instrument such as a tester or an oscilloscope to the measuring terminal arranged on the housing 300, and the circuit throat. In this embodiment, the failure diagnosis test and training of the vacuum sensor circuit can be performed without using an actual automobile or the like by confirming whether or not a failure has occurred at the position.

The position where the failure occurrence unit 200 is connected is not limited to that shown in FIG. 9A, and may be connected between another member and the connection terminal. By doing so, it is possible to switch between the normal state and the failure state also between the member and the connection terminal.

<Multiple pieces>
By arranging the above-mentioned pieces in the piece arranging portion 130 of the circuit board 100, a circuit actually used in an automobile can be simulated. A plurality of these pieces may be arranged on the circuit board 100. By doing so, it becomes possible to perform a plurality of types of tests on one circuit board 100.

The present invention has been described above according to a preferred embodiment of the present invention. Although the present invention has been described here with reference to specific examples, various modifications and changes can be made to these specific examples without departing from the spirit and scope of the invention described in the claims.

100 Circuit board 110 Power supply terminal 120 Reference potential terminal 130 Piece placement 200 Failure occurrence part 300 Housing 410 Switch piece 420 Relay piece 430 Lamp piece 500 Throttle position sensor piece 600 Vehicle speed sensor piece 710 Flasher piece 720 Combination switch piece 730 Hazard Switch piece 740 Center piece 800 Accelerator position sensor piece 900 Vacuum sensor piece

Claims (14)

A piece arranging part for arranging a piece simulating an automobile electrical component, which has an upstream side connection terminal on the power supply side and a downstream side connection terminal on the reference potential side,
A connection terminal connected to a power source that supplies power for operating the piece, and a power supply terminal portion having a measurement terminal having the same potential as the power source.
A connection terminal connected to the reference potential, and a reference potential terminal portion having a measurement terminal having the same potential as the reference potential,
It is connected between two connection targets, and includes a failure occurrence unit that switches the connection state of the two connection targets between a normal state and a failure state.
A circuit board in which the failure occurrence unit is connected between the power supply and the connection terminal of the power supply terminal unit, or between the connection terminal of the reference potential terminal unit and the reference potential. The circuit board according to claim 1, wherein the failure state is a state in which the connection between the two connection targets is disconnected, or a state in which the two connection targets are connected via a resistor. The circuit board further has a housing and
The measurement terminal of the power supply terminal portion and the measurement terminal of the reference potential terminal portion are arranged on the outside of the housing, and the connection terminal of the power supply terminal portion, the connection terminal of the reference potential terminal portion, and the failure occurrence portion are The circuit board according to claim 1 or 2, which is arranged inside the housing. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a switch piece.
A piece comprising a switch connected between the upstream connection terminal and the downstream connection terminal. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a relay piece.
As the upstream side connection terminal, a first upstream side connection terminal and a second upstream side connection terminal are provided.
As the downstream connection terminal, a first downstream connection terminal and a second downstream connection terminal are provided.
A relay circuit unit connected between the first upstream connection terminal and the second upstream connection terminal and the first downstream connection terminal and the second downstream connection terminal.
With the above-mentioned failure occurrence part,
The relay circuit unit
A drive unit connected between the first upstream connection terminal and the first downstream connection terminal,
A switch connected between the second upstream connection terminal and the second downstream connection terminal is provided.
The switch is a piece that opens and closes according to the current flowing through the drive unit. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a lamp piece.
A piece comprising a lamp connected between the upstream connection terminal and the downstream connection terminal. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a throttle position sensor piece.
Throttle whose opening changes by operation from the outside
A throttle sensor connected between the upstream connection terminal and the downstream connection terminal,
A signal line measurement terminal connected to the throttle sensor is provided.
The throttle sensor is a piece that measures the opening degree of the throttle and outputs a signal indicating the measured opening degree of the throttle to the signal line measuring terminal. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a vehicle speed sensor piece.
A vehicle speed sensor unit connected between the upstream side connection terminal and the downstream side connection terminal,
A vehicle speed determination unit that receives input from the outside and is connected to the vehicle speed sensor unit.
An amplitude changing unit that receives input from the outside and is connected to the vehicle speed sensor unit.
A signal line measurement terminal connected to the amplitude changing unit is provided.
The vehicle speed determination unit outputs a signal based on an input received from the outside to the vehicle speed sensor.
The vehicle speed sensor outputs a pulse signal having a pulse width based on the signal output from the vehicle speed determination unit to the amplitude changing unit.
The amplitude changing unit changes the amplitude of the pulse signal output from the vehicle speed sensor based on the input received from the outside, and outputs the pulse signal with the changed amplitude to the signal line measurement terminal. .. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a flasher piece.
As the upstream side connection terminal, a first upstream side connection terminal and a second upstream side connection terminal are provided.
As the downstream connection terminal, a first downstream connection terminal and a second downstream connection terminal are provided.
A flasher unit connected between the first upstream connection terminal and the second upstream connection terminal and the first downstream connection terminal and the second downstream connection terminal.
With the above-mentioned failure occurrence part,
Does the flasher unit allow current to flow from the second upstream connection terminal to the second downstream connection terminal according to the current flowing between the first upstream connection terminal and the first downstream connection terminal? A piece that controls whether or not, converts the current input from the second upstream connection terminal into a pulse signal, and outputs the current to the second downstream connection terminal. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a combination switch piece.
As the upstream side connection terminal, a first upstream side connection terminal and a second upstream side connection terminal are provided.
A combination switch arranged between the first upstream side connection terminal, the second upstream side connection terminal, and the downstream side connection terminal,
With the above-mentioned failure occurrence part,
The combination switch includes a state in which the first upstream side connection terminal and the downstream side connection terminal are connected, a state in which the second upstream side connection terminal and the downstream side connection terminal are connected, and a state in which the downstream side is connected. A piece that switches between a state in which the connection terminal is not connected to either the first upstream side connection terminal or the second upstream side connection terminal. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a hazard switch piece.
As the upstream side connection terminal, a first upstream side connection terminal and a second upstream side connection terminal are provided.
Hazard switches arranged between the first upstream side connection terminal, the second upstream side connection terminal, and the downstream side connection terminal,
With the above-mentioned failure occurrence part,
The hazard switch includes a state in which the first upstream connection terminal, the second upstream connection terminal, and the downstream connection terminal are connected, and the downstream connection terminal is the first upstream connection terminal and the second. A piece that switches between the state where it is not connected to any of the upstream connection terminals. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a center piece.
A lamp connected between the upstream connection terminal and the downstream connection terminal,
A piece comprising the failure generating portion. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as an accelerator position sensor piece.
The accelerator whose position changes by operation from the outside,
An accelerator position sensor connected between the upstream connection terminal and the downstream connection terminal,
The signal line measurement terminal connected to the accelerator position sensor and
With the above-mentioned failure occurrence part,
The accelerator position sensor is a piece that measures the position of the accelerator and outputs a signal indicating the measured position of the accelerator. A piece that is arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functions as a vacuum sensor piece.
A vacuum sensor connected between the upstream connection terminal and the downstream connection terminal,
The signal line measurement terminal connected to the vacuum sensor and
A piece including the failure occurrence unit, wherein the vacuum sensor measures pressure and outputs a signal based on the measured pressure to the signal line measurement terminal.

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