RU85245U1 - ON-BOARD CAR COMPUTER FOR MANAGING SERVICE FUNCTIONS IN VEHICLES - Google Patents

Abstract

An on-board automobile computer for controlling service functions in vehicles, including a control microcontroller with an analog-to-digital converter, a monochrome liquid crystal display with a touch panel, a real-time clock with non-volatile memory and an external memory unit, characterized in that it is additionally equipped with a programmable logical integrated structure, at least one temperature sensor, n transformers of transistor-transistor logic (TTL) levels to LO levels ICs based on silicon-metal-oxide-conductor (CMOS) structures with open-collector current switches, while the control microcontroller with an analog-to-digital converter is connected to a monochrome liquid crystal display (LCD) with a touch panel, an external Flash memory unit, a real clock time with non-volatile memory, at least one temperature sensor and programmable logical integrated structure bidirectional communication, the latter being connected to n transistor-tr level converters anzistor logic (TTL) to logic levels based on silicon-metal-oxide-conductor (CMOS) structures with unidirectional coupling, where n = 6 ... 200, with k current keys with an open collector unidirectional coupling, where k = 1 ... 200 and m transformations CMOS levels in TTL unidirectional communication, where m = 6 ... 200.

Description

The technical field to which the utility model relates.

The utility model relates to the automotive industry, in particular to on-board automobile computers for controlling service functions, and can be used in the on-board local computer information network of a vehicle (ATS). State of the art

The Cadias automobile computer is known, which is based on a RISC processor with a clock frequency of 166 MHz and is equipped with 64 MB of RAM and 8 MB of video memory. Information is displayed on the color touch LCD with a diagonal of 7 inches. The operating system uses Microsoft Windows CE for Automotive. The software package includes a diary and an address book (see Clarion's automotive computer. Japan, Ferra.ru, 2004).

The disadvantage of this car computer is its high cost.

Known electronic equipment of vehicles, which is a set of interacting with each other or a set of independent from each other electronic devices and systems of different complexity and purpose, which are components of the ATS or their units and assemblies, while the electronic equipment is made in the form of an on-board local computer network based on multiplex and information-diagnostic systems, combining sensors, actuators and electronic units (see. Automotive means. Electronic equipment. General technical requirements. GOST R 50905 - 96).

The disadvantages of this electronic equipment of vehicles are limited functionality and high cost.

Known automobile computer Carmani CB 200, containing an electronic unit consisting of a housing with a printed circuit board, fixing elements of the electronic unit in the car panel, a contact electrical connector, a supported K-Line interface in accordance with ISO 9141 and ISO 14230-1 (see passport " Carmani 200 ", production of South Korea).

The disadvantage of this car computer is its limited functionality and high cost.

Known automotive on-board information system comprising an electronic unit consisting of a front panel with a window and a niche having openings for contact sockets, and a housing with a digital display having a screen compatible with the front panel window, speaker, printed circuit boards, as well as electronic fixation elements unit in the car panel, a contact electric connector, a supported K-Line interface, in accordance with ISO 9141 and ISO 14230-1, while it is equipped with a keyboard with keys having illuminated LED markings y, optical fibers that perform the functions of additional indication of light emitted by the LEDs, a photosensor and a photodetector, the photosensitive parts of which are located on the outside of the front panel, and a control circuit board with buttons, LEDs, the rest of the photosensor and photodetector integrated on the inside of the front panel, as well as mounted on the body of the inverter circuit board and the main circuit board with contact slots protruding in the front part for alignment with the niche holes on the front side of the panel and protruding in the rear of the housing by a contact electric connector, a jack for connecting an external antenna; rear-view video camera located on the rear window of the car, and supported USB (Host, Slave), USB-OTG, 1-Ware, CAN 2.0 V interfaces (see Pat. RF No. 2268829, CL B06R 16/02, G06F 1 / 00, G06F 15/00, published on January 27, 2006).

The disadvantage of this automotive on-board information system is the low speed of the system and reliability.

The closest in technical essence and the achieved positive effect and adopted by the author for the prototype is a multifunctional µSAM-II controller containing a control microcontroller to which a monochrome liquid crystal display (LCD) is connected, an input data control unit, a real-time clock with non-volatile memory, random access memory device, Compact Flash external memory unit, analog-to-digital converters, LAN controller (see µSAM-II multifunction controller. Design Systems for monitoring and control of "Orion-micro", Rostov region, Taganrog, http:. \\ www.orion-micro.ru).

The disadvantage of this controller is the lack of a programmable logical integrated structure (FPGA), low reliability, limited functionality.

Utility Model Disclosure

The technical result that can be achieved using the proposed utility model is to expand the functionality, prompt reprogramming, adapting to a passenger car of any model, compatibility with various electronic peripherals, increasing reliability and safety when driving.

The technical result is achieved using an on-board automobile computer for controlling service functions in vehicles, including: a control microcontroller with an analog-to-digital converter, a monochrome liquid crystal display with a touch panel, a real-time clock with non-volatile memory and an external memory unit, while it is additionally equipped with a programmable logical integral structure of at least one temperature sensor, n transistor-t level converters transistor logic (TTL) to logic levels based on silicon-metal-oxide-conductor (CMOS) structures, with open-collector current switches, while the control micro-collector with an analog-to-digital converter is connected to a monochrome liquid crystal display (LCD) with a touch panel, external flash memory unit Compact Flash, real-time clock with non-volatile memory, at least one temperature sensor and programmable logical integrated structure bidirectional communication, the latter connected to n pre The indexes of transistor logic (TTL) levels to logic levels based on silicon-metal-oxide-conductor (CMOS) structures are unidirectional coupling, where n = 6 ... 200, with k current keys with an open collector unidirectional coupling, where k = 1 ... 200 and m CMOS level converters in TTL - unidirectional communication, where m = 6 ... 200.

Brief Description of the Drawings

Figure 1 is a functional diagram of an on-board car computer for controlling service functions in vehicles.

Figure 2 is given an on-board automobile computer for controlling service functions in vehicles, a monochrome liquid crystal display with a touch panel, climate control.

In Fig.3, the same, control of additional equipment.

In Fig.4, the same window control windows.

In Fig.5, the same menu controls the heated seats.

In Fig.6, the same main menu.

Utility Model Implementation

The on-board automobile computer for controlling service functions in vehicles consists of: a control microcontroller 1, with an analog-to-digital converter (ADC), which is connected to a monochrome liquid crystal display (LCD) 2 with a touch panel bi-directional communication, an external memory unit 3 Compact Flash bi-directional communication , 4 real-time clocks with non-volatile memory bi-directional communication, at least one temperature sensor 5 bi-directional communication, and programmable logic integration a bi-directional coupling structure (FPGA) 6, while a programmable logical integrated structure (FPGA) 6 is connected to n transducers of 7 levels of transistor-transistor logic (TTL) into logic levels based on silicon-metal-oxide-conductor (CMOS) structures with a unidirectional coupling , where n = 6 ... 200, with k current keys 8 with open collector - unidirectional communication, where k = 1 ... 200 and m converters of 9 CMOS levels in TTL unidirectional communication, where m = 6 ... 200.

Software is loaded into the control microcontroller 1 and into the FPGA 6 (not shown in FIG. 1)

The control system of service functions in vehicles works as follows.

The initial state of the on-board car computer for controlling service functions in vehicles

When you turn on the LCD 2 with a touch panel, a splash screen is drawn for 2.5 seconds. Then the climate control menu appears. The fan operation mode (not indicated in FIG., Shown as an icon), the position of the air dampers and temperature is determined by the last stored state at the time of shutdown. In the upper left corner of the clock there are 4 real time clocks. Figure 1 presents the original image of the LCD 2 of the screen with a touch panel.

The service functions management system in vehicles has four menus that define the control modes.

1. Climate control (Figure 2). Fan control by pressing appropriate

pictograms.

Up arrow - speed increases. Down arrow - speed decreases. The fan speed is indicated by the number of shaded blades. When you click on the corresponding icon, the control microcontroller 1 using the built-in ADC calculates the coordinates of the point of contact and through a programmable logical integrated structure 6 provides a signal to the corresponding transformer 7 levels of TTL to CMOS. The fan turns on only when the ignition is turned on, for this purpose, one of the inputs of the converter 9 CMOS levels in TTL, where m = 1, sends the corresponding signal from the ignition switch contact.

Air flow control is performed by clicking on the corresponding LCD icon 2

- a stream of air blows up. - the air flow is evenly distributed. - A stream of air blows in the middle of the cabin. - the air flow is directed down.

When these LCD icons are pressed 2, the control microcontroller 1 issues the corresponding commands to the programmable logic integrated structure 6, which, using current keys 8, provides control signals to the air damper drive (not shown in Fig.).

- defrosting the windshield. When this icon is pressed, the fan turns on at maximum speed, the air flow goes up, the air flow temperature is set to maximum.

- air circulation inside the cabin. When this icon is pressed, the fan turns off and the air intake flap closes.

- sets the air temperature in the cabin. Air temperature control occurs according to the proportional-integral-differential (PID) control law. Using the temperature sensor 5, the air temperature in the cabin is measured. The control microcontroller 1 calculates the difference between the set and the actual temperature in the cabin and, according to the PID law, calculates the magnitude of the control action.

2. Management of additional equipment (figure 3): heated rear window, antenna of the radio. It is possible to add 6 functions.

When clicking icons the control microcontroller 1 through a programmable logical integrated structure 6 supplies a signal to the corresponding current switch 8, which turns on the antenna motor (not shown in Fig.) in the forward or reverse direction.

When clicking icons the control microcontroller 1 through a programmable logical integrated structure 6 supplies a signal to the corresponding current switch 8, which turns on or off the rear window heating control relay (not shown in Fig.). Through one of the converters of the 9 CMOS to TTL levels, the control microcontroller 1 controls the state of the rear window heating and displays on the LCD 2.

3. Management of front and rear windows.

The position of the windows is controlled by clicking on the icon (figure 4).

- when you click on the icon, the glass opens or closes.

4. Control heated seats.

Figure 4 shows the seat heating control menu.

- when you click on the icon, the microcontroller 1 through a programmable logical integrated structure 6 sends a signal to the corresponding current switch 8, which includes heated seats.

Switching the operation menu occurs when you click the appropriate icons (figure 5).

The control microcontroller 1 reads the corresponding picture from the external memory unit 3 CompactFlash and displays it on the LCD 2.

The proposed utility model in comparison with the prototype and other well-known technical solutions has the following advantages:

- increased reliability;

- cost reduction;

- A wide range of peripheral and additional devices;

- operational reprogramming;

- adaptation to a passenger car of any model;

- compatibility with various electronic peripheral devices;

- wide functionality.

Claims (1)

An on-board automobile computer for controlling service functions in vehicles, including a control microcontroller with an analog-to-digital converter, a monochrome liquid crystal display with a touch panel, a real-time clock with non-volatile memory and an external memory unit, characterized in that it is additionally equipped with a programmable logical integrated structure, at least one temperature sensor, n transducers of transistor-transistor logic (TTL) levels to LO levels ICs based on silicon-metal-oxide-conductor (CMOS) structures with open-collector current switches, while the control microcontroller with an analog-to-digital converter is connected to a monochrome liquid crystal display (LCD) with a touch panel, an external Flash memory unit, a real clock time with non-volatile memory, at least one temperature sensor and programmable logical integrated structure bidirectional communication, the latter being connected to n transistor-tr level converters anzistor logic (TTL) to logic levels based on silicon-metal-oxide-conductor (CMOS) structures with unidirectional coupling, where n = 6 ... 200, with k current keys with an open collector unidirectional coupling, where k = 1 ... 200 and m transformations CMOS levels in TTL unidirectional communication, where m = 6 ... 200.