JPS5994989A - Junction box with function converting unit - Google Patents

Abstract

PURPOSE:To improve versatility and to attain ease of a design change and addition of a function by dividing the titled junction box with a function into an input/output unit and a signal processing unit to cope with a multi-function only with the exchange of the signal processing unit and to apply this device to a car. CONSTITUTION:The junction box with the function is constituted by the input/ output unit U and the signal processing unit W, the unit W is freely detachable and attachable for the exchange. This unit is provided with the function of O/E conversion and E/O conversion converting an optical signal and an electric signal, the input stage, output stage, P/S and S/P conversion. The unit W receives various signals supplied from a sensors switch from the unit U, and is provided with a function to process various signals for operation to sent to the unit U. Multiplex signal Sig of multi-function is coped only with the exchange of the unit W, the box is applied to a car to improve the varsatility.

Description

DETAILED DESCRIPTION OF THE INVENTION I) Object of the Invention The object of the present invention is to provide a functional junction box for an automobile that allows easy function replacement.

(b) Junction box Automobile electrical components, sensors, switches, batteries, etc.
Connected by wire harness.

When connecting individual electrical components and corresponding switches in a one-to-one ratio, it is more convenient to have breakers, fuses, relays, etc. all in one place inside the car. This is because it is desirable that fuses, breakers, relays, etc. can be easily replaced.

Therefore, automobile wiring harnesses are centralized to supply signals and driving power to each electrical component through fuses, relays, breakers, etc.

This is a junction box.

Such a junction box simply joins the wiring harness together at a midpoint; it simply connects the signal wires,
The effect of reducing the number of power lines is small. Load on/off signals and sensor analog signals are transmitted as independent signals through the copper wire.

(117) Functional Junction Box Therefore, multiplex transmission systems have been used to transmit signals in automobiles.

This is a functional junction box (Ac-4i
ve Junction Box) is installed at each necessary location in the automobile. The functional junction boxes are communicated with each other by optical or electrical multiplexed signals. Because of the multiple signals, numerous wiring harnesses are not required.

For example, in the case of optical multiplex transmission, only two input and output optical fibers are required.

Since it is a multiplex transmission system, it must include a converter for multiplexing input signals. Parallel/I/serial conversion to multiplex multiple signals is performed by a suitable IC. Similarly, a serial/para V/L/converter is also required.

If you simply want to transmit signals using multiplexed signals, this is fine.

Optical multiplex transmission also requires a light emitting section that converts electrical signals into optical signals, a light receiving section that converts optical signals into electrical signals, etc.

This includes light emitting diodes, photodiodes, and amplification ICs.
It can be easily produced by.

These are abbreviated as E10 conversion and O/E conversion for simplicity.

Just because the junction box is equipped with a serial) V/parallel converter, a parallel/L//serial converter, an Elo, and an O/E converter, there is little benefit from providing the junction box.

When there are multiple input signals, instead of simply transmitting these signals, you can process the signals and change them into signals suitable for the other party's junction box before transmitting them.
It's very effective.

For example, it is assumed that signals A, B, C, D, . . . are input to a box. Signal processing means turning off the lamp at r(A+B) or r(A-1-C).
This means creating a variety of output commands by combining multiple signals, such as "turn on a lamp for 3 seconds with D".

In this way, a junction box that has the function of not only passing signals but also actively combining and editing signals is called a functional junction box.

There are two types of functional junction boxes (AJB): one for transmission and one for reception. It can also be used for both sending and receiving.

For example, a junction box with a transmission function consists of (1) an input stage, (2) a signal processing section, (8) a parallel/I//serial converter, and (4) an output stage. The input stage amplifies on/off signals of switches, sensors, etc., measurement signals, etc. into signals of appropriate voltage and impedance. The output stage includes an E10 converter that converts the multiplexed signal, for example from electrical to optical.

The receiver with reception function consists of (5) input stage (6) serial/L//parallel converter (7) signal processor (8) output stage. The input stage includes an O/E converter when the multiplexed signal is transmitted over an optical fiber. Also included is a circuit that amplifies the signal. The serial) V/parallel converter converts the multiplexed signal back into multiple parallel signals. The signal processing section combines a plurality of signals and generates various command signals according to a predetermined method.

The output stage includes a power amplification circuit, electrical components,
Actuators can be driven.

FIG. 1 is a block diagram of such a junction box with transmitting and receiving functions.

In some cases, there is no distinction between transmission and reception, and both are provided in one potsukunu.

Now, if we deeply consider the configuration of such a functional junction box, we will find the following.

The functions of the input stage 115, output stage 4.8, parallel/serial converter 8.6, etc. are predetermined and do not change. This is common to any type of junction box with any function.

Since it is transmitted using multiplexed signals, input and output are equalized. Even if the number of signals to be handled increases or decreases, as long as the number of bits in the multiplexed signal is sufficient, any number of signals can be handled.

The same applies to V/serial conversion and serial/parallel conversion; there is a limit to the maximum number of signals that can be sent as a multiplexed signal, and it is only necessary to convert this number of parallel signals into serial signals and vice versa. -However, since the signal processing section must perform various calculations depending on the purpose, the structure and functions cannot be determined in advance.

Even within a single vehicle, the types of electrical components, actuators, and sensors that are targeted differ depending on where the junction box is installed. Accordingly, the content of signal processing that the junction box should perform differs.

Also, depending on the type of car and the road, the type of electrical components,
Since the ratings are different, the signals themselves are different, and the contents of the commands to be executed are also diverse.

Therefore, it was necessary to manufacture functionally equipped junction boxes with different configurations depending on the vehicle type and road.

In addition, various types of junction boxes must be prepared depending on the functions to be performed.

Even if specifications are changed or functions are added, the entire junction box must be remanufactured.

Unfortunately, it lacks versatility. For this reason, the manufacturing cost is high9 and the manufacturing time is long, so the functional junction box still has little practical value.

B) Junction box with functions of the present invention In order to solve the problems of the conventionally proposed junction boxes with functions, the present invention is designed so that only the signal processing section can be replaced.

FIG. 2 is a schematic perspective view showing the jangkunyong block of the present invention.

This functional junction block AJB has an input/output unit (U) and a signal processing unit (W) that can be attached/detached and replaced.

The multiplexed signal Sig is input to the input/output unit (UK).

or input/output units) is output from U.

The input/output unit includes functions such as input stage, output stage, parallel/serial converter, O/E conversion, and E10 conversion.

Measurement signals and control signals (including analog, digital signals, or multiplexed signals) from sensors and switches are input to the input/output unit U. In addition, driving power to electrical components and actuators that are loads is also output from the input/output crab unit U.

Signal processing equipment) W is the signal A, B, C,...
This section performs arithmetic processing according to the purpose, and is the same as the signal processing section 2.7 of the transmission and reception junction boxes described above, but is separated into one unit.

The input/output unit) U and the signal processing unit) W are detachable.

Input/output equipment) U is common, but signal processing equipment) W
We manufacture a variety of products depending on the purpose.

By combining the two, it is possible to create a junction box with a wide variety of functions.

FIG. 3 is an explanatory diagram illustrating the functions of the signal processing unit 1,1. signal processing equipment) U is 1, ■, ■,...
Suppose there is.

The signals are digital signals of A, B, C, etc., and H
Assume that an analog signal such as 1 is given to l.

Since the signals A, B, . . . take a value of %0'' or %1〃, logical operations can be performed on them.

The signal H can also be used as an object of calculation.

Alternatively, instructions may be made to correspond based on an inequality. When performing calculations, analog addition, subtraction, and multiplication circuits may be used, or the signals may be converted to digital signals using a ≠ converter before calculation is performed. Alternatively, the analog quantity may be compared with a predetermined quantity using a comparator and a command may be given.

For example, AB=1 ...... Lamp lighting A (,=1
・・・・・・・・・ Lamp lights up for 5 seconds B 〇 = 1
・・・・・・ Lamp blinking H)Ho ・・・・・・・・・
・ Heater on K＜KO・・・・・・・・・ Warning
It is possible to make one-person signals such as information correspond to functional commands.

Signal processing equipment) When replaced with H, A + B = l ...... Lamp goes off (A-
+-C) D=1 ...... Lamp lights up for 8 seconds (A-1-D) F=l ......
Wiper operation (A+D) G-1 . . . . . . The input signals and function commands can be completely changed, such as wiper intermittent operation.

(B) Effects of the present invention The functional junction box of the present invention can be divided into input/output units (U) and signal processing units (W), and by replacing only the signal processing units (W), it can meet the demands for various functions. can be dealt with.

Even if the vehicle type and road are different, you can use the same input/output crab knit U. According to the present invention, differences in the parts installed in the automobile can be easily accommodated. This is because it is sufficient to provide the same input/output units (U) and make only the signal processing unit (W) different.

Furthermore, if there is a need to change specifications or add functionality, it is only necessary to replace the signal processing unit (W).

Since all the wire harnesses are connected to the input/output unit (U), there is no need to operate the wire harness when replacing the signal processing unit (W).

It is highly versatile as it can be applied to any vehicle. It is an extremely useful invention as it is easy to change the design and add functions.

[Brief explanation of drawings]

(11) Figure 1 is a block diagram of a functional junction box. FIG. 2 is a schematic perspective view of the functional box of the present invention. FIG. 3 is an explanatory diagram illustrating the function in correspondence with signals A, B, . . . when signal processing units 1 and 1 are replaced. 1.5 ...... Input stage 2.7 ・
...... Signal processing section 3 ...
...Paran/1//Syria*Conversion part 4.8...
・・・・・・・・・ Out Kastishiro ・・・・・・
... Serial/parallel converter U ...
・・・・・・ Input/out crab knit W ・・・・・・
・・・ Signal processing unit A, B ・・・・・・・・・
・Digital signals H, K ・・・・・・・・・ Analog signal inventor Tadashi Moriyama
Toshi Wasinohara Fuhama 1) Hiroshi Isao Iro (12) Figure 3-544-

Claims (1)

[Claims] An input stage that inputs optical multiplexed signals or electrical multiplexed signals, and in the case of the former, performs photoelectric conversion and signal amplification, or inputs signals from switches, sensors, etc., amplifies and shapes the waveform, and multiplexes multiple parallel signals. a parallel/parallel converter that converts the multiplexed signal into a parallel signal, a serial/parallel converter that converts the multiplexed signal into a parallel signal, and a signal processor that combines and operates multiple signals to create a desired function instruction. Then, in a junction box with functions similar to an output stage that amplifies the multiplexed signal and outputs it to the transmission line, or drives electrical components and actuators according to functional instructions, only the signal processing section is separated. A junction box with a function conversion unit, characterized in that the signal processing unit) W is configured to be detachable from the input/output unit U, which includes another input/output stage, a parallel IV/serial converter, and a serial/parallel converter. .