JPS6167680A - Signal transmitter for motorcycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a signal transmission device for a motorcycle, and more particularly to a signal transmission device for a motorcycle that is not affected by ignition noise of an internal combustion engine.

(Prior Art) As is well known, motorcycles and motorbikes are equipped with many types of controlled devices, and these controlled devices are controlled by a control device to improve the running safety of the vehicle and to control operation. The aim is to improve performance and riding comfort.

Controlled devices with this type of function include light systems such as headlights, flasher lamps, and stop lamps, starting safety devices, constant speed running devices, vehicle height adjustment devices, display devices that display driving speed, etc. . These controlled devices are controlled by control signals from the control device, but the input information to this control device is not only the control command signal from the steering wheel switch section, but also various sources located at predetermined locations on the vehicle body. The information is obtained from a detection means that detects the driving status of the vehicle.

(Problems to be Solved by the Invention) In this way, the control device adjusts the vehicle height based on the input information of the detection means and displays driving information such as the eight-point voltage on the display device, but these signal lines If the signal line is composed of electric wires, for example, if the control device is installed at the front of the vehicle body and the detection means is installed at the rear of the vehicle body, the signal wire is connected to the cylinder head of the internal combustion engine due to wiring space constraints. It will pass nearby. Therefore, there is a possibility that ignition noise may be mixed into the signal line. Therefore, if the control device is electronicized, malfunctions due to ignition noise are likely to occur, and it is necessary to provide a circuit for preventing noise in the signal input circuit.

This invention was made against the background of the above-mentioned circumstances, and an object of the present invention is to prevent operating information signals from being affected by ignition noise caused by an internal combustion engine, and to reliably control controlled equipment with a simple structure. The purpose of the present invention is to provide a signal transmission device for motorcycles that can perform the following functions.

(Means for Solving the Problem) In order to solve the problem No. 111, the present invention provides a method for connecting a signal line passing near the internal combustion a-opening point to an optical fiber in a motorcycle equipped with a signal line for exchanging driving information. It is characterized by being composed of / to.

(Function) In this invention, since the signal line for transmitting and receiving operating information is composed of an optical fiber, ignition noise does not mix into the information signal even if the wire is routed near the cylinder head of an internal combustion engine. Controlled equipment can be reliably controlled without any problems.

(Example) Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a block diagram of a signal transmission device for a motorcycle according to the present invention.

In the figure, reference numeral 1 indicates a front control section, and 2 indicates a rear control section, which are disposed separately at the front and rear parts of the vehicle body.

The front control section v1 and the rear control section 2 are connected by a multi-hair transmission line composed of an optical fiber 3.

The front control section l has a right handle switch section 4. Control command signals are input via signal lines from seven input stages such as the left handle switch section 5 and the keyboard 6, and detection signals are sent via signal lines from various types of detection means 7 disposed in front of the internal combustion engine. input via The front control section 1 serves as a control center, and controls many types of controlled J1 devices 8 from this input information, and also transmits operation command signals to the rear control section 2.

The detection means 7 is, for example, a speed sensor, and the controlled device 8 is, for example, a headlight (which has a reserve lighting unit), a flasher lamp (which has an automatic release control function). ), display devices, etc.

The communication information from the front control section 1 to the rear control section 2 includes, for example, suspension pressure adjustment command information, front brake switch state information, fuel pump operation command, and the like.

The rear control section 2 receives this operation command signal and controls the controlled device 9 under the control of the front control section l. In addition, detection signals are inputted from various types of detection means 10 through signal lines, and from this detection signal, the controlled device 9, which cannot be processed, is controlled by the judgment of the rear control unit 2 alone, and the detected The information obtained from the means lO is transmitted to the front control part l.

The controlled equipment 9 is a suspension air pressure adjustment device, a fuel pump, a stop lamp, etc. In addition, the input information is detected by the detection means IO, such as remaining fuel level, suspension air pressure, gear position of the transmission, engine pulse from the igniter, side stand switch, engine pulse start, stop switch by brake operation, brake fluid, and fall information. etc. Furthermore, communication information from the rear control section 2 to the front control section 1 includes suspension air pressure information, remaining fuel amount information, transmission gear position information, rear brake switch status, engine oil level switch status, side stand switch status, rear These include brake fluid level switch status, lamp, actuator disconnection information, etc.

The front control unit 1 displays information obtained from the various detection means 7 and 10, control information for the nuclear crystal S devices 8 and 9, etc. on the display device i! Display in txt. This display and control information is
For example, abnormality tf! such as vehicle speed, internal combustion engine rotation speed, time, trip by drive computer, average speed, traveling time, required time, etc. information, maintenance timing, cumulative mileage,
These include battery voltage, cooling water temperature, fuel residual heat, suspension air pressure, etc.

2 to 6 show more specific embodiments of this invention. 2 is a side view of a motorcycle to which this invention is applied, FIG. 3 is a plan view of a wire harness of this invention, and FIG. 4 is a side view of a motorcycle to which this invention is applied.
The figure is a side view showing the state in which the wire harness is attached to the vehicle body frame. Figure 55 shows the front control unit's time-minute steel multiplex transmission system. FIG. 6 is a schematic diagram of the time division multiplex transmission system of the rear controller.

In the figure, reference numeral 1 indicates a front control section, and the front control section 1 is built into a display device 11 built into a fairing 12 provided at the front of the vehicle body, and includes a keyboard 6 provided at the top of a fuel tank 13, Left and right handle switch parts 4.
A control command signal is inputted from an input means such as 5 or the like.

As shown in FIG. 3, the left and right handle switch sections 4, 5 and the front control section 1 are connected to signal lines 14 and 15 made up of electric wires.
The switch is connected with a wire harness X to prevent load current from flowing directly to the switch contacts. These input signals are subjected to signal processing such as multiplication and chattering removal in the front control unit 1 to obtain information signals suitable for control and multiplex transmission.

The front control unit 1 further includes a headlight 16 built into the fairing 12, and left and right flasher lamps 17.
18. Signal line 2 in which the speed sensor 19 is composed of an electric wire
It is connected with a wire harness X of 0.21 and 22.23.

The rear control section BB2 is arranged below the seat 25 at the rear of the internal combustion engine 24, and the front control section l and the rear control section 2 multiplex transmit driving information through an optical fiber/to-3. The rear control section 2 outputs control signals through signal lines 26 and 27 made up of electric wires to control controlled devices such as a stop lamp 28 and a vehicle height adjustment device 29. Transmission gear position sensor 30
Detection signals from various detection means such as the above are manually inputted via the signal line 31. This input signal is internally processed in the rear control section 2 into an information signal suitable for control and multiplex transmission, and the information signal is transmitted to the front control section l via the optical fiber 3.

The operating information to be transmitted is serially digitally transmitted using a time division multiplexing method.
Shown below.

, 7S5 shows the case of transmission from the tI side control unit l to the rear side control unit 2, and in the front side control unit l,
When the control signal is at the L level as shown in a), information A such as front stop switch information, fuel pump on/off commands, and vehicle height adjustment control information is transmitted at predetermined time intervals ti. At this time, if the content of the data of information A changes, it is immediately transmitted.

Information A is shown in FIGS. 5(b), (c), and (d).

As shown in (e) and (f), there is a header byte (At) in which the number of bytes to be transmitted and the type of data are written, and a data bye (at) in which front stop switch information and fuel pump on/off are written.A2. Data file containing control information for the vehicle height adjustment device) A3. It consists of a check-by (check-by) A4 that detects errors such as dropped bits during communication.

Each of these 7 bits consists of 8 bits, the 4 bits on the LSB side of the lower bit of header byte A11fM are used for the data type a, the middle 2 bits are used for the number of bytes to be transmitted,
Fix the 2 bits on the MSB side to rlJ. Data by) A2 uses the 2 least significant bits to command the fuel pump on/off (d), and the front side switch to turn on.

It is used for the off information e, and the others are fixed at rOJ.

Also, data byte A3 starts from the least significant bit LSB side,
High, medium and low vehicle height information from the keyboard g, rlJ
fixed h, offset value i for the number of passengers, unit j for pressure, etc.
, is used to permit operation of the vehicle height adjustment device.

Then, check-by) A4 is obtained by adding the above-mentioned hetuda-pite At, data byte A2, and further data byte A3, adding this value ADD2 and check-by) A4, and this final value ADD3 becomes FF in hexadecimal. It has been determined that Therefore, on the receiving side, when ADD3 becomes FF, it is processed as correct information, and other information is ignored.

:! Figure S6 shows the case of transmission from the rear control section 2 to the front control section l;

When the control signal is at L level, information B, C, D,
Send E.

Here, information B is the gear position of the transmission, rear side) -/
Switch, alarm (abnormality) information, information C is fuel level, information is vehicle height #! ! ! ! The displayed information, information E, indicates the engine speed.

Information B, C, and D are sent periodically, information E is sent as soon as the information is obtained, and information B is sent as soon as the information changes.

Each of the information B, C, D, and E consists of a header byte, a data byte, and a check byte, and the second byte and check byte are constructed in the same manner as described above.

The data byte of information B is 1 as shown in FIG. 6(b).
The first byte contains transmission gear position information l, rOJ fixed ml, m2, rear stomp switch on/off information n, second byte 8 bits are 0 falls, brake fluid p, side stand q, engine oil r, tail lamp. Disconnection S
, fuel pump disconnection t, relay disconnection U, vehicle height adjustment abnormality V, etc. In the data byte of information C, as shown in FIG. 6(C), 5 bits are used for data W to represent the degree of fuel level and for a fixed X of "O". Also,'
As shown in Fig. 6(d), the data byte of the Ftl report shows the numerical data y displayed in the 1st/-th 8 bits, and the level reconnaissance rLJ, rMJ, r) (vehicle height of J) in the 2nd byte. Information 2 is used for fixed α of rQJ and unit β information of numerical data.

Further, as shown in FIG. 6(e), the data byte of the ° information E includes 8 bits of information γ representing the engine speed.

For example, 1 bit is set to r50 rpmJ.

As shown in FIG. 4, the wire harness X is attached to the cylinder of the internal combustion engine 24 along the vehicle body frame 33 located above the rad 32. A spark plug (not shown) is provided in the cylinder head 32 of the internal combustion engine 24, and a wire harness X having an optical fiber 3 is arranged to pass near this, but the signal line is connected to the optical fiber 3.
Since it consists of 1 ignition noise, the influence of ignition noise is reduced.

Furthermore, since the wire harness X uses electric wires and optical fibers 3, it is thinner and can be easily attached to the vehicle body frame 33.

Furthermore, as shown in FIG. 7, the wire harness X can be passed through the vehicle body frame 33 if the vehicle body frame 33 is formed of a pipe.

In the above embodiment, the control section is disposed on the rear side of the vehicle body, but the control layer may be disposed only on the front side for centralized control. In this case, the detection means and the nuclear crystal annulator The signal line is constructed from optical fiber.

(Effects of the Invention) As described above, in this invention, the signal line that passes near the internal combustion engine and transmits and receives operating information is constructed of optical fibers, so even if ignition noise is generated from the spark plug of the internal combustion engine,
The influence of ignition noise can be reduced. Therefore, there is no need to provide a signal input circuit with a means for preventing ignition noise in the control section, and information can be multiplexed and transmitted reliably using a simple structure and a thin wire harness.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a signal transmission device for a motorcycle according to this invention, Fig. 2 is a side view of a motorcycle to which this invention is applied, and Fig. 3 is a plan view of a wire harness of this invention. Fig. 4 is a side view showing the state in which the wire harness is attached to the vehicle body frame, Figs. ) is a schematic diagram of the time-division multiplex transmission system of the rear control section, and FIG. 7 is a side view of another embodiment showing the state in which the wire harness is attached to the vehicle body frame. l... Front control section 2. ...Rear side control section 3...
optical fiber. 4.5... Handle switch section 6... Keyboard 7.10... Detection means 8.
9... Controlled equipment 11... Display device 14.15,
20, 21, 22, 23, 26, 27. 31...Signal line X...Wire harness

Claims (1)

[Claims] A signal transmission device for a motorcycle that is equipped with a signal line for transmitting and receiving driving information, in which the signal line that passes near the internal combustion engine is made of optical fiber.