RU6924U1 - CAR COMPUTER - Google Patents

Abstract

An automobile computer comprising a processor, an indication unit, a secondary power supply and a keyboard unit whose output is connected to the processor, the processor output is connected to the indication unit, and the input is connected to the input pulse shapers of the vehicle’s speed sensor and fuel consumption sensor, characterized in that the indication unit made on a vacuum-luminescent indicator and a voltage converter is introduced into the secondary power source and a decoder in the display unit, the input of which is connected to the processor, and the output - to the vacuum-luminescent indicator of the display unit, while the inputs of the voltage converter are connected to the voltage stabilizer and to the power circuit of the ignition switch, and its output is connected to the input of the vacuum-luminescent indicator.

Description

Car computer

The utility model relates to the automotive industry and can be used to process, control and display vehicle motion parameters, in particular average SPEED, WAY, fuel consumption, and can be used in passenger cars of the VAZ, Moskvich, Tavria, GAZ types of various modifications.

A car computer is known comprising a processor, an indication unit, a SECONDARY POWER SUPPLY and a keyboard unit, the output of which is connected to the processor, the processor output is connected to an indication unit, for example, Sato car computer number 2C 9865 used on a Citroen GS-GSA CX car, France .

A car computer is known that contains a processor, an indication unit, a SECONDARY power supply and a keyboard unit, the output of which is connected to the processor, the output of the processor is connected to the display unit, and the input is connected to the drivers of the input PULSES of the SPEED sensor of the car (hereinafter - DSA) and the fuel consumption sensor ( hereinafter referred to as DRT), for example, a computer computer model 13.3857 FIRM Martina-86, Bulgaria.

In this device, the display unit is made on seven-segment DIGITAL LED indicators. The use of LED indicators leads to an ambiguous reading of information under intense lighting: in the daytime in bright sunlight the information on the indicator is practically unreadable.

As the processor used chip is MC 66705V35, designed to solve a wide range of problems and has

great functionality, which when using this chip in an automobile computer is redundant for the computer, which leads to an increase in the cost of the product as a whole.

In this device, the processor receives the input signals DSA and DRT through the Shapers of the input pulses, which are a gain circuit made on discrete elements: four resistors, a diode and a transistor.

Thus, this DEVICE is an EXPENSIVE product and has low lighting characteristics.

The essence of the claimed utility model lies in the fact that in an automobile computer having a processor, an indication unit, a SECONDARY power supply and a keyboard unit, the output of which is connected to the processor, the processor output is connected to the indication unit, and the input is connected to the DSA and DRT input IMPULSERS, the display unit of WHICH is made on a vacuum-luminescent indicator and a voltage converter is introduced into the SECONDARY power supply and a decoder in the display unit, the input of which is connected to the processor, and the output to the vacuum-luminescence nym indicator display unit, wherein the voltage converter inputs connected with a voltage regulator and power supply circuit with the ignition switch, and its output connected to an input vakuumnolyuminestsentnogo indicator.

The inventive DEVICE is made on a vacuum-luminescent indicator, designed specifically for automotive electronics, in particular for information systems that work in the passenger compartment. It provides unambiguous reading of information when

any illumination INSIDE the car interior, both in the daytime and at night.

As a processor, the KR 1820 VEZ microcircuit is used, specially designed for trip computers of automobiles, which provides the minimum POSSIBLE cost of the product.

In this device, the processor receives the input signals DSA and DRT through the Shapers of the input pulses, which are an amplification circuit made on a chip that provides SIMPLICITY and compactness of the product.

Thus, this DEVICE has high lighting characteristics and low consumer value.

The claimed utility model is illustrated in the drawing, which shows a structural diagram of the inventive automobile computer.

The DEVICE has a processor unit 1, an indication unit 2, consisting of a vacuum-luminescent indicator 3 and a decoder 4, a SECONDARY power supply including a voltage stabilizer 5 and a voltage converter b, a BRIGHTNESS control unit 7 and a keyboard unit 8. Output signals from the DSA and DRTs are fed to the input of the processor l through input shapers

PULSE 9.

The supply voltage from the vehicle’s battery (terminal 30) is supplied to the input of the voltage stabilizer 5, which generates the voltage necessary to provide power to the elements of the electric circuit, with the exception of the voltage converter b. When the ignition switch is turned on through the ignition switch (terminal 15/1), the supply voltage is applied

to the input of the voltage converter b, the output voltages of which are used to power the vacuum-luminescent indicator 3.

The processor 1 contains a single-chip MICRO-computer, which operates according to the program recorded in it and transfers the processed information to the decoder 4, which through the appropriate control circuit includes the corresponding segments of the vacuum-luminescent indicator 3.

The BRIGHTNESS control unit 7 is designed to reduce by 15 to 20 times the BRIGHTNESS of the glow of the segments of the vacuum-luminescent indicator 3 in order to increase the comfort of reading information by the driver at night and is connected to the display unit.

The keyboard unit 8 is designed to control the operation of an automobile computer and is connected to the processor 1. The keyboard unit 8 has control buttons with LEDs for selecting computer operating modes;

travel time;

current day DAY;

distance traveled;

average SPEED along the route;

total fuel consumption;

average fuel consumption;

current fuel consumption

The device operates as follows.

When the driver turns on the battery, voltage is applied to terminal 30, the initial settings of the electronic circuits of the car computer are OCCURRED, and it enters the information storage mode.

When the ignition switch is turned on, voltage is applied to terminal 15/1, as a result of which the computer enters the operating mode:

indication on the block of the keyboard 8 turns on;

the vacuum-luminescent indicator 3 is turned on, and the computer enters the measurement mode of the current DAY.

In the presence of voltage at terminals 30 and 15/1, the power supply 5, 6 When surges in the vehicle electrical system provides stable power to electronic circuits. The voltage regulator generates a voltage of 5 V. The voltage converter generates voltages (- 15 V and 2.4 V) necessary for supplying a vacuum-luminescent indicator.

To obtain the desired information, the driver must select the appropriate mode by pressing the appropriate buttons on the keyboard unit 8.

When the car is moving, information from the DSA and DRT through the Shapers of input IMPULSES 9 goes to the inputs of the processor 1, is processed by it, and goes to the display unit 2, where it is displayed in the DIGITAL Form on the vacuum-luminescent indicator 3.

When the night illumination (side lights) is turned on, the signal from the side light switch (Off) is fed to the input of the BRIGHTNESS adjustment unit 7 and reduces the glow intensity of the vacuum-luminescent indicator 3.

Thus, the use of a vacuum-luminescent indicator provides a different intensity of illumination of the indicator panel depending on the DAY and the degree of illumination in the vehicle interior, i.e., with high lighting characteristics.

The use of specialized microcircuits provides the ability to create DEVICES with a minimum low consumer cost.

Applicant: Director of hard currency PS AUTHORS:

V. Tikhonov

V. Kochetov

N. Kozhevnikov

I. RUDOMINSKY P. Vorotko

Claims (1)

An automobile computer comprising a processor, an indication unit, a secondary power supply and a keyboard unit whose output is connected to the processor, the processor output is connected to the indication unit, and the input is connected to the input pulse shapers of the vehicle’s speed sensor and fuel consumption sensor, characterized in that the indication unit made on a vacuum-luminescent indicator and a voltage converter is introduced into the secondary power source and a decoder in the display unit, the input of which is connected to the processor, and the output - to the vacuum-luminescent indicator of the display unit, while the inputs of the voltage converter are connected to the voltage stabilizer and to the power circuit of the ignition switch, and its output is connected to the input of the vacuum-luminescent indicator.