CN201280070Y

CN201280070Y - Apparatus for implementing meter function collocation

Info

Publication number: CN201280070Y
Application number: CNU2008200391537U
Authority: CN
Inventors: 陈泽坚
Original assignee: Atech Automotive Wuhu Co Ltd
Current assignee: Bitech Automotive Wuhu Co Ltd
Priority date: 2008-07-25
Filing date: 2008-07-25
Publication date: 2009-07-29
Anticipated expiration: 2018-07-25

Abstract

The utility model discloses a device for configuring instrument functions, which comprises a computer, an interface circuit and an automobile instrument. The device is characterized in that the computer is connected with the automobile instrument through the interface circuit. By using the structure, the device has the advantages of simple operation of configuring automobile instrument functions, convenient change of automobile instrument functions, reduced production cost, and convenience for warehousing and logistics.

Description

A kind of device of realizing the instrument function configuration

Technical field

The utility model design vehicle instrument field, particularly a kind of device of realizing the instrument function configuration.

Background technology

For the customer that satisfies different levels to requirement with a car, often automobile main frame maker will be provided with many optional configuration features for a car, as ABS, AIRBAG, average fuel consumption, fuel consumption of 100km, maintenance prompting etc.; The effective means variation of some function in addition, as: high level, low level, resistance signal, pwm signal etc.; Sometimes various countries, area are also different to the definition of some function, as oil pressure chimes of doom, safety strap chimes of doom, safeguard mileage number or the like.

If each product one cover hardware or software not only can increase the Products Development time, also can cause the waste significantly of cost.It is the problem that prior art need solve that a kind of device of configuration auto meter function of simple and flexible is provided.

The utility model content

Technical problem to be solved in the utility model is, provides a kind of device of realizing the instrument function configuration to reach by different parameter settings realizes the purpose of the configuration of auto meter difference in functionality to the EEPROM in the auto meter.

For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of device of realizing the instrument function configuration comprises computing machine, interface circuit, auto meter, and it is characterized in that: described computing machine is connected to auto meter by interface circuit;

The main control chip of described auto meter is read and write data among the EEPROM by iic bus, realizes the functional configuration of auto meter.

A kind of device of realizing the instrument function configuration is characterized in that: described auto meter is the auto meter of global function configuration.

A kind of device of realizing the instrument function configuration, owing to adopt said structure, it is simple that this utility model has the feature operation of configuration auto meter, change auto meter function is convenient, reduces production costs, and makes things convenient for the advantage of storekeeper and logistics.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;

Fig. 1 realizes the equipment connection diagram of the device of instrument function configuration for the utility model is a kind of;

In Fig. 1,1, computing machine; 2, interface circuit; 3, auto meter.

The specific embodiment

As shown in Figure 1, a kind of device of realizing the instrument function configuration, comprise computing machine 1, interface circuit 2, auto meter 3, it is characterized in that: described computing machine 1 is connected to auto meter 3 by interface circuit 2, to reach the purpose that realizes computing machine and auto meter communication.

A auto meter 3 that comprises all functions of every money automobile development, different parameters makes with the suitable different vehicle of a instrument among the auto meter 3EEPROM by setting then; Or even the close vehicle of feature capability also can be used with a instrument.

The ROM capacity of auto meter 3 microprocessors itself satisfies being not enough to. and in this case, existing most ECU (electronic control unit) need to remember these information with the EEPROM of outside expansion.

That the main control chip of auto meter 3 adopts is NEC780828, and NEC780828 is a chip that NEC develops at the automotive electronics market, 8 bit processors, 60K ROM, the RAM of 1024 bytes has 59I/O, 5 tunnel 8 ADC input, the input of 3 external interrupt, 3 serial interfaces, LCD driving circuit, stepper motor driving circuit, the CAN controller, 6 passage timers, counting machine.The EEPROM of expansion is 93c66,4K FLASH ROM.

Main control chip in the auto meter 3 is read and write data among the EEPROM by iic bus, distinguishes different products by the difference of bit data then. as table 1:

Table 1

Car is safeguarded the mileage number of effective mileage number definition engine maintenance able to programme, sees Table 2:

K-Factor	2707	1	2707	0A93
K-Factor	2707	1	2707	0A93	The PT1 damping	34	1	34	22
Vel:Min	3	16	48	30	The PT1 damping	34	1	34	22

Table 2

Instrument can be reminded chaufeur when overspeed alarming surpassed certain value when the speed of a motor vehicle, and the frequency and the tone of the definition able to programme of this limit value and every kind of chimes of doom see Table 3:

Describe	Unit	dec	Hex
Describe	Unit	dec	Hex	Safety strap is reported to the police the recurrence interval	1sec	0	00
Engine oil pressure is reported to the police the recurrence interval	100mSec	50	32		1sec	0	00
	100mSec	50	32	Engine oil pressure warning time-delay-weak point	100mSec	30	1E
Engine oil pressure warning time-delay-length	100mSec	30	1E	Engine oil pressure warning time-delay-weak point	100mSec	30	1E
Engine oil pressure warning time-delay-length	100mSec	30	1E	Key does not pull out prompting	100mSec	0	00
Key does not pull out alarm cycle	100mSec	70	46	Key does not pull out prompting	100mSec	0	00
Key does not pull out alarm cycle	100mSec	70	46	Overspeed alarming activates time-delay	100mSec	30	1E

Table 3

See Table 4 in order to mate the position that different fuel tanks define with different fuel sensors:

The fuel oil input impedance	40	73	48
The fuel oil input impedance	40	73	48	62	98	61
Pull-up resistor=100R	89	120	78	62	98	61
Pull-up resistor=100R	89	120	78	137	147	93

	189	167	A6
	189	167	A6	283	188	BC
The fuel oil volume	52	104	68	283	188	BC
The fuel oil volume	52	104	68	39	78	4E
	16	32	20	39	78	4E
	16	32	20	13	26	1A
	10	20	14	13	26	1A
	10	20	14	0	0	00

Table 4

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.

Claims

1, a kind of device of realizing the instrument function configuration comprises computing machine (1), interface circuit (2), auto meter (3), and it is characterized in that: described computing machine (1) is connected to auto meter (3) by interface circuit (2);

The main control chip of described auto meter (3) is read and write data among the EEPROM by iic bus, realizes the functional configuration of auto meter (3).

2, a kind of device of realizing the instrument function configuration according to claim 1, it is characterized in that: described auto meter (3) is the auto meter of global function configuration.