JP7289734B2 - circuit boards and pieces - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for simulating an automobile failure.

2. Description of the Related Art In the training of automobile mechanics, trouble diagnosis training and the like are conducted using automobiles in which the trouble state is reproduced. For example, in Patent Document 1, operating devices such as automobile injectors, ignition coils, fuel pumps, and exhaust recirculation valves, and sensors such as crank angle sensors, MAF sensors, accelerator opening sensors, and vehicle speed sensors. and an apparatus for reproducing fault conditions.

JP 2018-205193 A

However, when it is necessary for many people to perform fault diagnosis at the same time, for example, when testing for fault diagnosis is conducted for many examinees, it is difficult to use an actual automobile.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to make it possible to perform fault diagnosis without using an actual automobile.

In order to solve the above problems, the circuit board of the present invention has an upstream connection terminal on the power supply side and a downstream connection terminal on the reference potential side. a connection terminal connected to a power source that supplies power for operating the piece, a power supply terminal portion having a measurement terminal having the same potential as the power source, a connection terminal connected to a reference potential, and a connection terminal having the same potential as the reference potential a reference potential terminal unit having a measurement terminal; and a fault generation unit connected between two connection objects and switching the connection state of the two connection objects between a normal state and a fault state, The failure occurrence section is connected between the power supply and the connection terminal of the power supply terminal section, or between the connection terminal of the reference potential terminal section and a reference potential. The failure state may be a state in which the two connection objects are disconnected, or a state in which the two connection objects are connected via a resistor. The circuit board further has a housing, and the measurement terminal of the power terminal section and the measurement terminal of the reference potential terminal section are arranged outside the housing, and the connection terminal of the power terminal section and the reference potential terminal are arranged outside the housing. The connection terminal of the terminal section and the failure occurrence section may be arranged inside the housing.

A 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 connection terminal and the downstream connection terminal.

A piece according to the present invention is a piece that is arranged in a piece arrangement portion of the circuit board and functions as a relay piece, and includes a first upstream connection terminal and a second upstream connection terminal as the upstream connection terminals. , the downstream connection terminals include a first downstream connection terminal and a second downstream connection terminal, and the first upstream connection terminal and the second upstream connection terminal and the first downstream connection terminal and the second 2 downstream connection terminal; and the fault occurrence unit, wherein the relay circuit unit is connected between the first upstream connection terminal and the first downstream connection terminal. and a switch connected between the second upstream connection terminal and the second downstream connection terminal, wherein the switch opens and closes according to the current flowing through the drive section.

A piece in the present invention is a piece that is arranged in a piece arrangement portion of the circuit board, functions as a lamp piece, and includes a lamp connected between the upstream connection terminal and the 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 throttle position sensor piece. and a signal line measurement terminal connected to the throttle sensor, wherein the throttle sensor measures the opening of the throttle and measures the measured opening of the throttle. A signal shown 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 connected between the upstream connection terminal and the downstream connection terminal. a vehicle speed determining unit connected to the vehicle speed sensor unit and receiving an input from the outside; an amplitude changing unit connected to the vehicle speed sensor unit and receiving an input from the outside; a signal line measurement terminal connected to the amplitude changing 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 outputs a pulse signal having a pulse width based on the signal output from the vehicle speed determination unit 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 output to the Output to the signal line measurement terminal.

A piece according to 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 connection terminal and a second upstream connection terminal as the upstream connection terminals. , the downstream connection terminals include a first downstream connection terminal and a second downstream connection terminal, and the first upstream connection terminal and the second upstream connection terminal and the first downstream connection terminal and the second 2 a flasher unit connected between the downstream connection terminal and the fault occurrence section, wherein the flasher unit is configured to cause current to flow between the first upstream connection terminal and the first downstream connection terminal. , it controls whether current flows from the second upstream connection terminal to the second downstream connection terminal, and converts the current input from the second upstream connection terminal into a pulse signal. and output to the second downstream connection terminal.

A 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 the upstream connection terminals are a first upstream connection terminal and a second upstream connection terminal. a combination switch arranged between the first upstream connection terminal and the second upstream connection terminal and the downstream connection terminal; A state in which one upstream connection terminal and the downstream connection terminal are connected; a state in which the second upstream connection terminal and the downstream connection terminal are connected; and a state in which the downstream connection terminal is connected to the first upstream connection terminal. and a state in which neither the side connection terminal nor the second upstream side connection terminal is connected.

A piece according to 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 the upstream connection terminals include a first upstream connection terminal and a second upstream connection terminal. a hazard switch arranged between the first upstream connection terminal and the second upstream connection terminal and the downstream connection terminal; 1 upstream connection terminal and the second upstream connection terminal are connected to the downstream connection terminal; and the downstream connection terminal is connected to both the first upstream connection terminal and the second upstream connection terminal. Toggles between disconnected and unconnected states.

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 center piece, and is a lamp connected between the upstream connection terminal and the downstream connection terminal, and the failure lamp. and a generator.

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 includes an accelerator whose position is changed by external operation, the upstream connection terminal, and the downstream connection. an accelerator position sensor connected between terminals, a signal line measurement terminal connected to the accelerator position sensor, and the failure generating unit, the accelerator position sensor measuring the position of the accelerator, Outputs a signal indicating the measured accelerator position.

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

The present invention makes it possible to perform fault diagnosis without using an actual automobile.

FIG. 1A is a block diagram of a circuit board according to one embodiment of the invention. 4 is a diagram showing an example of a power terminal portion 110; FIG. 4 is a diagram showing an example of a reference potential terminal portion 120; FIG. 3 is a diagram showing an example of a fault generating section 200; FIG. 3 is a diagram showing an example of a fault generating section 200; FIG. 3 is a diagram showing an example of a fault generating section 200; FIG. 3 is a diagram showing an example of a housing 300; FIG. 4A and 4B are diagrams showing examples of a switch piece 410, a relay piece 420, and a lamp piece 430. FIG. It is a figure which shows an example of a lamp lighting circuit. 5 is a diagram showing an example of a throttle position sensor piece 500; FIG. FIG. 4 is a diagram showing an example of a throttle position sensor circuit; 6 is a diagram showing an example of a vehicle speed sensor piece 600; FIG. It is a figure which shows an example of a vehicle speed sensor circuit. 7A and 7B are diagrams showing an example of a flasher piece 710, a combination switch piece 720, a hazard switch piece 730, and a center piece 740. FIG. It is a figure which shows an example of a flasher circuit. 7 is a diagram showing an example of a flasher piece 710; FIG. 7A and 7B are diagrams showing examples of a combination switch piece 720 and a hazard switch piece 730. FIG. 7A and 7B are diagrams showing an example of a center piece 740; FIG. 74 is a diagram showing the relationship between the top view of the automobile displayed on the surface of the center piece 740 and lamps 7411 and 7421. FIG. 8 is a diagram showing an example of an accelerator position sensor piece 800; FIG. It is a figure which shows an example of an accelerator position sensor circuit. 9 is a diagram showing an example of a vacuum sensor piece 900; FIG. 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 one embodiment of the invention. The circuit board 100 includes a power terminal portion 110 , a reference potential terminal portion 120 , a piece placement portion 130 , a 12 V power supply portion 140 that supplies a voltage of 12 V to the power terminal portion 110 , and a voltage of 5 V to the power terminal portion 110 . and a 5V power supply unit 150 that

The power terminal section 110 has a connection terminal 111 and a measurement terminal 112 as shown in FIG. 1B. The connection terminal 111 is connected to the 12V power supply section 140 or the 5V power supply section 150 . The connection terminal 111 is connected to a connection terminal on the power supply side (upstream side) of a piece imitating an electrical component of an automobile, such as a switch piece 410 to be described later, arranged in the piece arrangement portion 130 . 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 voltage or the like to apply a probe of a measuring instrument such as a tester or an oscilloscope. .

Although the embodiment illustrated in FIG. 1B has four connection terminal portions 111 and four measurement terminals 112, the number of connection terminal portions 111 and measurement terminals 112 is not limited to four. 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. However, the number of connection terminals 111 connected to the 12V power supply unit 140 is is not limited to three, and the number of connection terminals 111 connected to the 5V power supply section 150 is not limited to one.

As shown in FIG. 1C, the reference potential terminal section 120 includes connection terminals 121 for connecting connection terminals of the pieces arranged in the piece placement section 130, measurement terminals 122 having the same potential as the reference potential, and failure occurrence terminals. a part 200;

The failure generation unit 200 is connected between two connection objects, and switches the connection state of these two connection objects between a normal state and a failure state such as disconnection. That is, in the reference potential terminal section 120, the failure occurrence section 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 divided into a normal state and a fault state. switch between. In the embodiment shown in FIG. 1B, the power supply terminal section 110 does not have the failure occurrence section 200, but the power supply terminal section 110 may also have the failure occurrence section 200. FIG. By doing so, it is also possible to switch the connection state between the power source connected to the power terminal unit 110 and the piece between the normal state and the fault state.

Although the embodiment described in FIG. 1C has four connection terminals 121, measurement terminals 122, and fault generators 200, the number of connection terminals 121, measurement terminals 122, and fault generators 200 is limited to four. do not have.

Since the circuit board 100 of the present invention has the above configuration, as will be described later, various pieces are prepared as pieces to be arranged in the piece arrangement section 130, and by combining these pieces, fault diagnosis can be performed. For testing and training purposes, it is possible to create circuits that simulate various electrical components of an automobile.

Further, as shown in FIG. 1A, the circuit board 100 includes a voltage conversion unit 160 that converts the 12V voltage supplied from the 12V power supply unit 140 into a 5V voltage and supplies it to the 5V power supply unit 150, and a commercial power supply or the like. An AC connection unit 170 having a terminal for connecting to an AC power supply, an AC-DC conversion unit 180 for converting AC to a DC voltage of 12V and supplying it to the 12V power supply, and a terminal for connecting to a DC power supply and a direct-current connection portion 190 may be provided. The 12V power supply unit 140 is supplied with 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 fault generating unit 200 is connected between two connection objects, and switches the connection state of these two connection objects between the normal state and the fault state. The fault generating unit 200 may be configured by, for example, the circuit shown in FIG. 2A. The circuit depicted in FIG. 2A includes switch 210 . In this way, when the switch 210 is closed, the two connection objects are connected to a normal state. becomes.

Further, the fault generating section 200 may be configured by a circuit having a switch 220 and a resistor 230 as shown in FIG. 2B. In this circuit, the switch 220 can switch between two paths, one in which the two connection objects are connected without the resistance 230 and the other in which the two connection objects are connected through the resistance 230 . By doing so, when the two connection objects are switched to a path that connects without the resistor 230, the two connection objects are directly connected to the normal state. When the path is switched to the path connecting to the reference potential via the resistor 230, the resistance between the two objects to be connected increases, resulting in a failure state such as poor contact between the piece and the reference potential. Become.

Further, the fault generating unit 200 may be configured by a circuit having a pair of the switch 220, the upstream connection terminal 240, and the downstream connection terminal 250, as shown in FIG. 2C. In this way, when nothing is connected between the upstream connection terminal 240 and the downstream connection terminal 250, there are two switches, similar to the circuit having only the switch 210 described in FIG. 2A. It is possible to switch between a normal state in which a connection object is connected and a fault state in which a wire is disconnected between two connection objects. Then, when a resistor is connected between the upstream connection terminal 240 and the downstream connection terminal 250, similar to the circuit having the switch 220 and the resistor 230 shown in FIG. can be switched between a normal state of direct connection to the two connection objects and a fault state of increased resistance between the two connection objects.

<Case 300>
Circuit board 100 may have a housing 300 as described in FIG. A measurement terminal 112 of the power terminal section 110 and a measurement terminal 122 of the reference potential terminal section 120 are arranged on the surface of the housing 300 . For example, in FIG. 3, the six measurement terminals 112 on the left have the same potential as the voltage 12V supplied from the 12V power supply section 140, and the one measurement terminal 112 on the far right has the voltage of 5V supplied from the 5V power supply section 150. , and to indicate this, the left six measurement terminals 112 are labeled "12V" and the rightmost one measurement terminal 112 is labeled "5V". It is Also in FIG. 3, the measurement terminal 122 is labeled "GND" to indicate that the measurement terminal 122 is at a reference potential.

In addition, in the housing 300 shown in FIG. 3, the piece placement section 130 is formed as six piece placement areas 310, and various pieces described in detail below are placed in the piece placement areas 310. FIG. Further, when arranging the pieces, measurement terminals of the pieces, which will be described later, are arranged in portions 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 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, connection terminals of the pieces, which will be described later, are arranged in portions of the pieces that are not visible from the outside of the housing 300 . For this reason, it is not possible to visually confirm 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 pieces. For this reason, inside the housing 300, connection between the terminals is not performed, and a disconnection fault condition is generated. By measuring the voltage and the like using the measuring terminals of 122 and pieces to be described later, it becomes possible to perform failure diagnosis tests and training without using an actual automobile.

Further, the failure occurrence 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 fault occurrence unit 200 is switched to the normal state or to the fault state. For this reason, inside the housing 300, the fault occurrence unit 200 is switched to a failure state such as a disconnection, and voltage, etc. By measuring , it becomes possible to conduct failure diagnosis tests and training without using actual automobiles.

A positive terminal 320 and a negative terminal 330 of the DC connection section 190 are arranged on the surface of the housing 300. By connecting a 12V DC power supply to the positive terminal 320 and the negative terminal 330, the 12V power supply section 140 can be supplied with a voltage of 12V.

<Lamp lighting circuit>
As shown in FIG. 4A, a switch piece 410, a relay piece 420, and a lamp piece 430 are placed on the piece placement portion 130 of the circuit board 100 to create 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 terminal section 110 , and a downstream connection terminal 413 . In addition, 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 downstream side of the switch 411 according to the test or training to be conducted. .

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

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

In addition, although not shown, the measurement terminal becomes the same potential as each connection terminal of the relay piece 420, the drive section of the relay circuit 421, the upstream side and the downstream side of the switch, etc. according to the test or training to be performed. are arranged as appropriate.

Further, the above-described failure occurrence section 200 is connected between the relay circuit section 421 and the second downstream connection terminal 425 . Thereby, the connection state between the relay circuit unit 421 and the second downstream connection terminal 425 can be switched between the normal state and the fault 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 section 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. Although the embodiment described in FIG. 4A has two lamps 431, upstream connection terminals 422 and downstream connection terminals 433, the number of lamps 431, upstream connection terminals 422 and downstream connection terminals 433 is is not limited to 2.

In addition, 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 downstream side of the lamp 431 according to the test or training to be conducted. .

By arranging the switch piece 410, the relay piece 420, and the lamp piece 430 on the circuit board 100 as described above, a lamp lighting circuit as shown in FIG. This makes it possible to perform testing and training for fault diagnosis using a device with a simple configuration without using an actual automobile or the like.

For example, in the lamp lighting circuit configured by the circuit board 100 and the pieces as described above, the failure state in which the lamp 431 is not lit is caused by switching the failure generation unit 200 to the failure state or disconnecting the connection terminals. , or a fault condition in which the brightness of the lamp 431 is reduced. Then, a person who undergoes failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. By making it possible to check whether a failure has occurred at a position, in this embodiment, it is possible to perform failure diagnosis tests and training for the lamp lighting circuit without using an actual automobile or the like.

For example, the failure occurrence section 200 of the reference potential terminal section 120 downstream of the lamp 431 is configured with the circuit shown in FIG. By switching the path and allowing current to flow through resistor 230, a fault condition can be simulated between lamp 431 and the reference potential, causing lamp 431 to dim.

The position at which the failure occurrence section 200 is connected is not limited to that shown in FIG. 4A, and may be connected between other members and connection terminals. In this way, it is possible to switch between the normal state and the fault state also between this member and the connection terminal.

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

<Throttle position sensor>
By arranging the throttle position sensor piece 500 on the piece placement portion 130 of the circuit board 100 as shown in FIG. 5A, the throttle position sensor circuit shown 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 terminal section 110, a downstream connection terminal 530 connected to the connection terminal 121 of the reference potential terminal section 120, It has a signal line measurement terminal 540 , an idle contact measurement terminal 550 and a throttle 560 . Also, 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 downstream side of the throttle position sensor 510 according to the test and training to be conducted. Arranged appropriately.

Throttle position sensor 510 is a sensor that measures the opening of throttle 560 operated by a person undergoing testing or training for failure diagnosis. 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 is 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 not correct, the idle contact will not turn ON even if the throttle 560 is fully closed.

By arranging the throttle position sensor piece 500 in the piece arrangement portion 130 of the circuit board 100 as described above, a pseudo throttle position sensor circuit as shown in FIG. 5B can be created. It is possible to perform failure diagnosis testing and training using a simple configuration device without using an actual automobile.

For example, in the throttle position sensor circuit composed of the circuit board 100 and pieces as described above, the failure generating unit 200 can be switched to the failure state, the connection terminals can be disconnected, and the mounting position of the throttle position sensor can be changed. This makes it possible to create a failure state in which the sensor does not operate, or a failure state in which the idle contact does not turn ON even if the throttle is fully closed. Then, a person who undergoes failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. In this embodiment, by confirming whether or not a failure has occurred in the position, it is possible to perform tests and training for failure diagnosis of the throttle position sensor circuit without using an actual vehicle. .

<Vehicle speed sensor circuit>
By arranging the vehicle speed sensor piece 600 in the piece placement portion 130 of the circuit board 100 as shown in FIG. 6A, a pseudo vehicle speed sensor circuit as shown in FIG. 6B can be created.

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

Vehicle speed determination unit 640 receives input from a person who performs failure diagnosis testing and training, and outputs a signal based on the received input to vehicle speed sensor unit 610 . Vehicle speed sensor unit 610 outputs a pulse signal having a pulse width based on the signal received from vehicle speed determination unit 640 . A change in the pulse width of the pulse signal output from the vehicle speed sensor unit 610 simulates the vehicle speed measured by the actual vehicle speed sensor.

The embodiment described 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 8, and one of the two vehicle speed sensor units 610 outputs a drive signal. A pulse signal having 25 pulses generated per rotation of the shaft is output.

An amplitude changing section 660 is arranged between the vehicle speed sensor section 610 and the vehicle speed measuring terminal 650 . Amplitude changing portion 660 can receive an input from the outside, and changes the amplitude of the pulse signal output from vehicle speed sensor portion 610 based on the input from the outside, and outputs the pulse signal with the changed amplitude. is output to vehicle speed measurement terminal 6050 . For example, the amplitude changer 660 is a variable resistor. This makes it possible to make the signal output to vehicle speed measurement terminal 650 weaker than the signal output from vehicle speed sensor section 610 . In other words, it is possible to simulate a failure state between the vehicle speed sensor section 610 and the vehicle speed measurement terminal 650 .

By arranging the vehicle speed sensor piece 600 in the piece arrangement portion 130 of the circuit board 100 as described above, a pseudo vehicle speed sensor circuit as shown in FIG. It is possible to perform tests, training, and the like using a simple configuration device without using an actual automobile.

For example, in the vehicle speed sensor circuit configured by the circuit board 100 and the piece as described above, the failure generating section 200 is switched to the failure state, the amplitude changing section 660 changes 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 failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. By making it possible to check whether a fault has occurred at a position, in this embodiment, it is possible to conduct testing and training for fault diagnosis of the vehicle speed sensor circuit without using an actual vehicle.

<Flasher circuit>
By arranging the flasher piece 710, the combination switch piece 720, the hazard switch piece 730, and the center piece 740 in the piece placement section 130 of the circuit board 100 as shown in FIG. You can make a flasher circuit like

7C, the flasher piece 710 includes a flasher unit 711, a first upstream connection terminal 712 connected to the connection terminal 111 of the power terminal section 110, and a first upstream connection terminal 712 connected to the connection terminal 111 of the power terminal section 110. 2 upstream connection terminal 713 , first switch connection terminal 714 and second switch connection terminal 715 connected to combination switch piece 720 and hazard switch piece 730 , and first lamp connection terminal connected to center piece 740 . 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 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. to the downstream connection terminal 711d, it is controlled whether current flows from the upstream connection terminal 711b to the downstream connection terminal 711f. The flasher unit 711 also converts the current input from the upstream connection terminal 711b into a pulse signal and outputs the pulse signal from the downstream connection terminals 711e and 711f.

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

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

The failure occurrence unit 200 described above includes a first upstream connection terminal 712, a second upstream 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. 715 and the flasher unit 711 .

In FIG. 7C, for example, the downstream side of the flasher unit 711 has four connection terminals 711c, 711d, 711e, and 711f. Whether or not current flows from the upstream connection terminal 711b to the downstream connection terminal 711h may be controlled according to the current flowing from the side connection terminal 711a to the downstream connection terminal 711g.

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 connection terminal 715 connected to the second switch connection terminal 715, as shown in FIG. 7D. 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 is configured such that the upstream connection terminal 721a and the downstream connection terminal 721c are connected, the upstream connection terminal 721b and the downstream connection terminal 721c are connected, and the downstream connection terminal 721c has two upstream connection terminals. It is a switch for switching between a state in which none of the side connection terminals 721a and 721b are connected and a state in which the side connection terminals 721a and 721b are not connected.

7D, the first upstream connection terminal 722 is connected to the upstream connection terminal 721a of the combination switch 721, the second upstream connection terminal 723 is connected to the upstream connection terminal 721b of the combination switch 721, and the downstream connection terminal 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 in which the upstream connection terminal 721 a and the downstream connection terminal 721 c are connected, the 12 V power supply section 140 and the reference potential are connected to the first upstream connection terminal 712 of the flasher piece 710 . , the flasher unit 711, the first switch connection terminal 714, the first upstream connection terminal 722 of the combination switch piece 720, the combination switch 721, and the downstream connection terminal 724 (FIGS. 7A, 7C, 7D). As a result, current flows from the first upstream connection terminal 712 to the first switch connection terminal 714 in the flasher unit 711 , and a pulse current is output from the flash unit 711 to the first lamp connection terminal 716 .

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

In addition, 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 conducted. .

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

7D, the hazard switch section 730 includes a hazard switch 731, a first upstream connection terminal 732 connected to the first switch connection terminal 714, and a second upstream connection terminal 715 connected to the second switch connection terminal 715. It has a connection terminal 733 and a downstream connection terminal 734 connected to the connection terminal 121 of the reference potential terminal portion 736 . The hazard switch section 730 also 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 section 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 configured such that both the upstream connection terminal 731a and the upstream connection terminal 731b are connected to the downstream connection terminal 731c, and the downstream connection terminal 731c is connected to either of the two upstream connection terminals 731a and 731b. It is a switch that switches between a state in which both are not connected and a state in which both are not connected.

7D, the first upstream connection terminal 732 is connected to the upstream connection terminal 731a of the hazard switch 731, the second upstream connection terminal 733 is connected to the upstream connection terminal 731b of the hazard switch 731, and the downstream connection terminal 734 is connected to the downstream connection terminal 731 c 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 are connected to the downstream connection terminal 731c, the 12V power supply section 140 and the reference potential are connected to the flasher piece. 710 first upstream connection terminal 712, flasher unit 711, first switch connection terminal 714, first upstream connection terminal 732 of hazard switch piece 730, hazard switch 731, and downstream connection terminal 734, In addition, the lines of the first upstream connection terminal 712 of the flasher piece 710, the flasher unit 711, the second switch connection terminal 715, the second upstream connection terminal 733 of the hazard switch piece 730, the hazard switch 731, and the downstream connection terminal 734 are connected. (Figs. 7A, 7C, 7D). As a result, in the flasher unit 711, current flows from the first upstream 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 A pulse current is output to

When the hazard switch 731 is switched to a state in which both the upstream connection terminal 731a and the upstream connection terminal 733b are connected to the downstream connection terminal 731c, a current flows through the lamp 735 and the lamp 735 is lit. do.

In addition, although not shown, the measurement terminal becomes 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 conducted. are arranged as appropriate.

Further, in the embodiment shown in FIG. 7D, the above-described failure occurrence unit 200 is connected between each of the first upstream connection terminal 732, the second upstream connection terminal 733, and the downstream connection terminal 734 and the hazard switch 735. It is Further, the above-described failure occurrence section 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 shown in FIG. 7E.

Meter section 7410 includes two lamps 7411 , a first upstream connection terminal 7412 connected to first lamp connection terminal 716 of flasher piece 710 , and a second upstream connection terminal 7412 connected to second lamp connection terminal 717 of 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 section 120, and one of the two lamps is connected to the first upstream connection terminal 7412 and the downstream connection terminal. 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 portions 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 portion 120, and the lamp 7421 is connected to the upstream connection. It is connected between the terminal 7422 and the downstream connection terminal 7423 . Two upstream connection terminal portions 7422 of the four turn signal portions 7420 are connected to the first lamp connection terminal 716 of the flasher piece 710, and the remaining two upstream connection terminal portions 7422 of the four turn signal portions 7420 are connected. The connection terminal portion 7422 is connected to the second lamp connection terminal 717 of the flasher piece 710 .

Also, although not shown, the measurement terminals are appropriately arranged so that they are at the same potential as the connection terminals of the center piece 740 and the upstream and downstream sides of the lamps 7411 and 7421 according to the test or training to be conducted. be done.

Further, the above-described 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 downstream of the second lamp connection terminal 717 flicker.

By arranging the flasher piece 710, the combination switch piece 720, the hazard switch piece 730, and the center piece 740 in the piece placement portion 130 of the circuit board 100 as described above, the flasher as shown in FIG. Circuits can be simulated. The two lamps 7411 of the meter section 7410 and the lamps 7421 of the four turn signal lamp sections 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 automobile, it is possible to perform tests and training for fault diagnosis of the flasher circuit with a simple configuration device without using an actual automobile. Become.

For example, in the flasher circuit configured by the circuit board 100 and pieces as described above, the lamp 7421 and the turn signal of the meter section 7410 can be switched by switching the fault generating section 200 to the fault state or by disconnecting the connection terminals. It is possible to create a failure state in which the lamp 7421 of the lamp unit 7420 and the lamp 735 in the hazard switch piece 730 do not turn on, or a failure state in which the brightness of these lamps is reduced. Then, a person who undergoes failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. By making it possible to check whether a failure has occurred at a position, in this embodiment, failure diagnosis testing and training for the flasher circuit can be performed without using an actual automobile or the like.

The connection position of the fault generating unit 200 is not limited to those shown in FIGS. 7C to 7E, and may be connected between other members and connection terminals. In this way, it is possible to switch between the normal state and the fault state also between this member and the connection terminal.

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

<Accelerator position sensor circuit>
By arranging the accelerator position sensor piece 800 in the piece placement portion 130 of the circuit board 100 as shown in FIG. 8A, a pseudo accelerator position sensor circuit as shown in FIG. 8B can be created.

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 terminal section 110, a downstream connection terminal 813 connected to the connection terminal 121 of the reference potential terminal section 120, and a signal line measurement terminal 814 . Also, although not shown, the measurement terminals are set to have the same potential as each connection terminal of the accelerator position sensor piece 800, the upstream side and the downstream side of the accelerator position sensor 811, etc. according to the test or training to be conducted. Arranged appropriately.

Accelerator 820 is operated by, for example, a person undergoing testing or training for failure diagnosis, and the position of operated accelerator 820 is measured by 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 described in FIGS. 8A and 8B has two sensor units 810, the number of sensor units 810 is not limited to two.

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

By arranging the accelerator position sensor piece 800 in the piece arrangement portion 130 of the circuit board 100 as described above, a pseudo accelerator position sensor circuit as shown in FIG. 8B can be created. It is possible to perform failure diagnosis testing and training using a simple configuration device without using an actual automobile.

For example, in the accelerator position sensor circuit configured by the circuit board 100 and the pieces as described above, the failure state in which the sensor does not operate is caused by switching the failure generation unit 200 to the failure state or disconnecting the connection terminals. Or, it is possible to create a fault condition such as a weakened signal indicating the accelerator position. Then, a person who undergoes failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. By making it possible to check whether a failure has occurred at the position, in this embodiment, it is possible to conduct tests and training for failure diagnosis of the accelerator position sensor circuit without using an actual automobile or the like. .

The position at which the failure occurrence section 200 is connected is not limited to that shown in FIG. 8A, and may be connected between other members and connection terminals. In this way, it is possible to switch between the normal state and the fault state also between this member and the connection terminal.

<Vacuum sensor circuit>
By arranging the vacuum sensor piece 900 on the piece placement portion 130 of the circuit board 100 as shown in FIG. 9A, a pseudo vacuum sensor circuit as shown in FIG. 9B can be created.

The vacuum sensor piece 900 includes a vacuum sensor section 910, an upstream connection terminal 920 connected to the connection terminal 112 of the power supply terminal section 110, a downstream connection terminal 930 connected to the connection terminal 131 of the reference potential terminal section 120, and a signal and a line measurement terminal 940 . In addition, although not shown, the measurement terminal is appropriately set to have the same potential as each connection terminal of the vacuum sensor piece 900 and the upstream side and downstream side of the vacuum sensor section 910 according to the test or training to be performed. placed.

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

Further, the failure occurrence section 200 described above is connected between the vacuum sensor section 910 section and the signal line measurement terminal 940 .

By arranging the vacuum sensor piece 900 in the piece arrangement portion 130 of the circuit board 100 as described above, a pseudo vacuum sensor circuit as shown in FIG. It is possible to perform tests, training, and the like using a simple configuration device without using an actual automobile.

For example, in the vacuum sensor circuit configured by the circuit board 100 and the pieces as described above, switching the failure generation unit 200 to the failure state or disconnecting the connection terminals causes the sensor to not operate. , fault conditions such as a weakened signal indicative of pressure. Then, a person who undergoes failure diagnosis testing or training applies a measuring instrument probe such as a tester or an oscilloscope to the measuring terminals arranged on the housing 300 to measure the voltage or the like between the measuring terminals. By making it possible to check whether a failure has occurred at the position, in this embodiment, failure diagnosis testing and training for the vacuum sensor circuit can be performed without using an actual automobile.

The position at which the failure occurrence unit 200 is connected is not limited to that shown in FIG. 9A, and may be connected between other members and connection terminals. In this way, it is possible to switch between the normal state and the fault state also between this member and the connection terminal.

<Multiple pieces>
By arranging pieces such as those described above on 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 with one circuit board 100 .

The present invention has been described above with reference to the preferred embodiments of the present invention. Although the present invention has been described with reference to particular embodiments, various modifications and changes can be made to these embodiments without departing from the spirit and scope of the invention as set forth in the claims.

REFERENCE SIGNS LIST 100 circuit board 110 power supply terminal 120 reference potential terminal 130 piece placement portion 200 failure occurrence portion 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 section for arranging a piece simulating an electrical component of an automobile, which has an upstream connection terminal on the power supply side and a downstream connection terminal on the reference potential side;
a power supply terminal section having a connection terminal connected to a power supply that supplies power for operating the piece, and a measurement terminal having the same potential as the power supply;
a reference potential terminal portion having a connection terminal connected to the reference potential and a measurement terminal having the same potential as the reference potential;
a fault generation unit connected between two connection objects and switching the connection state of the two connection objects between a normal state and a fault state;
The circuit board, wherein the failure occurrence section is connected between the power supply and a connection terminal of the power supply terminal section, or between the connection terminal of the reference potential terminal section and a reference potential. 2. The circuit board according to claim 1, wherein said failure state is a state in which said two connection objects are disconnected or a state in which said two connection objects are connected through a resistor. The circuit board further has a housing,
The measurement terminals of the power supply terminal section and the measurement terminals of the reference potential terminal section are arranged outside a housing, and the connection terminals of the power supply terminal section, the connection terminals of the reference potential terminal section, and the fault occurrence section are 3. A circuit board according to claim 1 or 2, arranged inside a housing. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a switch piece,
A piece comprising a switch connected between said upstream connection terminal and said downstream connection terminal. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a relay piece,
A first upstream connection terminal and a second upstream connection terminal are provided as the upstream connection terminals,
A first downstream connection terminal and a second downstream connection terminal are provided as the downstream connection terminals,
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 ;
and the failure generation unit,
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 ;
The piece, wherein the switch opens and closes in accordance with the current flowing through the drive unit. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a lamp piece,
A piece comprising a lamp connected between said upstream connection terminal and said downstream connection terminal. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a throttle position sensor piece,
A throttle that changes the opening by operating 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,
The throttle sensor measures the opening of the throttle and outputs a signal indicating the measured opening of the throttle to the signal line measurement terminal. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a vehicle speed sensor piece,
a vehicle speed sensor unit connected between the upstream connection terminal and the downstream connection terminal;
a vehicle speed determination unit connected to the vehicle speed sensor unit and receiving an input from the outside;
an amplitude changing unit that receives an input from the outside and is connected to the vehicle speed sensor unit;
a signal line measurement terminal connected to the amplitude changing unit,
The vehicle speed determination unit outputs a signal based on an input received from the outside to the vehicle speed sensor unit ,
The vehicle speed sensor unit outputs a pulse signal having a pulse width based on the signal output from the vehicle speed determination unit to the amplitude change unit,
The amplitude changing unit changes the amplitude of the pulse signal output from the vehicle speed sensor unit based on an input received from the outside, and outputs the pulse signal with the changed amplitude to the signal line measurement terminal. piece. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a flasher piece,
A first upstream connection terminal and a second upstream connection terminal are provided as the upstream connection terminals,
A first downstream connection terminal and a second downstream connection terminal are provided as the downstream connection terminals,
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 ;
and the failure generation unit,
The flasher unit determines whether current flows 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. and converts the current input from the second upstream connection terminal into a pulse signal and outputs the pulse signal to the second downstream connection terminal. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a combination switch piece,
A first upstream connection terminal and a second upstream connection terminal are provided as the upstream connection terminals,
a combination switch arranged between the first upstream connection terminal and the second upstream connection terminal and the downstream connection terminal;
and the failure generation unit,
The combination switch has a state in which the first upstream connection terminal and the downstream connection terminal are connected, a state in which the second upstream connection terminal and the downstream connection terminal are connected, and a state in which the downstream connection terminal is connected. A piece for switching between a state in which a connection terminal is not connected to either the first upstream connection terminal or the second upstream connection terminal. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a hazard switch piece,
A first upstream connection terminal and a second upstream connection terminal are provided as the upstream connection terminals,
a hazard switch arranged between the first upstream connection terminal and the second upstream connection terminal and the downstream connection terminal;
and the failure generation unit,
The hazard switch has two states, one in which the first upstream connection terminal and the second upstream connection terminal are connected to the downstream connection terminal, and the other in which the downstream connection terminal is connected to the first upstream connection terminal and the second upstream connection terminal. A piece that switches between not connecting 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 unit. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as an accelerator position sensor piece,
An accelerator whose position changes by operating from the outside,
an accelerator position sensor connected between the upstream connection terminal and the downstream connection terminal;
a signal line measurement terminal connected to the accelerator position sensor;
and the failure generation unit,
The accelerator position sensor measures the position of the accelerator and outputs a signal indicating the measured position of the accelerator. A piece arranged in the piece arrangement portion of the circuit board according to any one of claims 1 to 3 and functioning as a vacuum sensor piece,
a vacuum sensor connected between the upstream connection terminal and the downstream connection terminal;
a signal line measurement terminal connected to the vacuum sensor;
and the failure generating 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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