CN2750067Y

CN2750067Y - Automobile starting device

Info

Publication number: CN2750067Y
Application number: CN 200420098267
Authority: CN
Inventors: 何卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-10
Filing date: 2004-12-10
Publication date: 2006-01-04
Anticipated expiration: 2014-12-10

Abstract

The utility model discloses an automobile starting device which comprises a single chip computer and a relay which is controlled by the single chip computer, wherein one end of a normally open contact of the relay is connected with a positive electrode of an automobile electrical source, and the other end of the normally open contact of the relay is connected with the input end of a starter controlling electrical source; the input end of the single chip computer comprises an input end for the rotary speed signal of an engine and an input end for the starting signal of the engine. When the engine is started, a driver twists an ignition switch to a starting position to give the single chip computer the starting signal and the driver can instantly lose hold of the ignition switch. The system of the utility model can start the engine in a set time, and the electrical source for a starter can be automatically cut off according to a set rotary speed of the engine. When the engine has some problems, the engine can not be started in the set time, the system can also automatically cut off the electrical source for a starter, the engine is restarted after a period of delay time and the starting system is protected further.

Description

A kind of vehicle starting device

Technical field

The utility model relates to a kind of car engine start device, and it is simple to operate when piloting engine to relate in particular to a kind of driver of making, and possesses the vehicle starting device of protection storage battery and starting system function.

Background technique

Present automobile is when engine start, generally all be to turn ignition switch to connecting full car position of source (ON with hand by the driver, down together), and then continue to be screwed to the starting position, and be docked to herein and unclamp ignition switch again after motor starts fully, then ignition switch can spring back to the ON position automatically.

The shortcoming of this start mode is: during engine start, the driver twists ignition switch and can not loose one's grip immediately to the starting position, after having only the driver rule of thumb to judge engine start, just can unclamp ignition switch, if it is incorrect to unclamp the timing of ignition switch, motor can't start, or infringement vehicle starting system (comprising storage battery).

Summary of the invention

Technical problem to be solved in the utility model provides a kind of when engine start, as long as ignition switch is screwed to the starting position looses one's grip at once, and to not imposing any restrictions the vehicle starting device that can pilot engine the opportunity of loosing one's grip.

For achieving the above object, the technical solution of the utility model is: described vehicle starting device comprises single-chip microcomputer, by monolithic processor controlled relay, one termination automobile power source positive pole of the normally opened contact of relay, another termination starter motor control power input of relay normally open contact, the input end of single-chip microcomputer comprises engine rotational speed signal input end and activating signal input end.

As a kind of improvement, one end of the electromagnetic coil of described relay is connected with the input power supply, the other end links to each other with the collector electrode that drives triode, driving the base resistance R3 of triode and the base resistance R4 of the triode of using as phase inverter links to each other with microcontroller power supply respectively, the collector electrode of the triode of using as phase inverter links to each other with the base stage that drives triode, and the base stage of the triode of using as phase inverter links to each other with the output control terminal of single-chip microcomputer.

Owing to adopt technique scheme, described vehicle starting device comprises single-chip microcomputer, by monolithic processor controlled relay, one termination automobile power source positive pole of the normally opened contact of relay, another termination starter motor control power input of relay normally open contact, the input end of single-chip microcomputer comprises engine rotational speed signal input end and activating signal input end; During engine start, the driver twists ignition switch and gives activating signal of single-chip microcomputer to the starting position, just can unclamp hand at once, native system can be piloted engine in (for example 5 seconds) in the time of setting, and cuts off starter power automatically according to the engine speed of setting (when for example certain motor reaches 260 rev/mins).If motor has some problem, in the time of setting, start not, then native system also can cut off starter power automatically, and can start once more after time-delay a period of time (for example 15 seconds), further protects starting system (comprising storage battery).The intervention of this device is arranged, and whether the driver just needs that energy is concentrated on the sensation motor and is lighted, and be triggered at any moment when piloting engine, thereby makes operation become light and satisfied more.

Description of drawings

Accompanying drawing is the utility model embodiment's a schematic diagram.

Embodiment

As shown in drawings, a kind of vehicle starting device comprises single-chip microcomputer 5, relay 1 by single-chip microcomputer 5 controls, one termination automobile power source positive pole of the normally opened contact of relay 1, another termination starter motor control power input of relay normally open contact, the input end of single-chip microcomputer 5 comprises engine rotational speed signal input end 8 and activating signal input end 9.

One end 2 of the electromagnetic coil of described relay 1 is connected with the input power supply, the other end 3 links to each other with the collector electrode that drives triode 7, driving the base resistance R3 of triode 7 and the base resistance R4 of the triode of using as phase inverter 11 links to each other with microcontroller power supply respectively, the collector electrode of the triode of using as phase inverter 11 links to each other with the base stage that drives triode 7, and the base stage of the triode of using as phase inverter 11 links to each other with the output control terminal 6 of single-chip microcomputer.

The relay 1 that normally opened contact is connected between automobile power source positive pole and the starter motor is controlled by single-chip microcomputer 5, one end 10 of electromagnetic coil relay links to each other with input positive source of the present utility model, the other end links to each other with driving triode 7 collector electrodes, the base resistance that drives triode 7 base resistances and the triode of using as phase inverter 11 links to each other with single-chip microcomputer 5 power supplys respectively, triode 11 collector electrodes of using as phase inverter link to each other with driving triode 7 base stages, the base stage of the triode of using as phase inverter 11 links to each other with the output control terminal 6 of single-chip microcomputer, and the input end 8 of single-chip microcomputer connects engine rotational speed signals.An end 4 contacts of divider resistance R1, the R2 of two series connection fire switch starting terminal, the other end ground wire, the tie point of two resistance R 1, R2 is connected to single-chip microcomputer input end 9.Input positive source contact fire switch ON terminal of the present utility model, single-chip microcomputer+5V power supply is obtained through three terminal regulator by this device input power supply.During work, this device power supply when automobile ignition switch is allocated to ON, single-chip microcomputer 5 resets, be in the activating signal state of waiting for, the output control terminal 6 of single-chip microcomputer is always high level, passed through the triode 11 of inverting function, made relay drive triode 7 and be in cut-off state, the contact of relay 1 disconnects all the time.When further ignition switch being allocated to the starting position, activating signal is delivered to single-chip microcomputer input end 9 by divider resistance, trigger single-chip microcomputer 5 and move start-up sequence immediately, this moment, the output control terminal 6 of single-chip microcomputer became low level, make and drive triode 7 conductings, the normally opened contact closure of relay 1 is connected starter power, and starter motor is started working.If unclamp ignition switch this moment, then in the starting time of setting, the normally opened contact of relay 1 is still closed, and starter motor works on.Meanwhile engine rotational speed signal is also delivered to single-chip microcomputer input end 8, when this tach signal reaches motor and has been considered to light, the output control terminal 6 of single-chip microcomputer becomes high level again, driving triode 7 ends, the contact of relay 1 is disconnected, will promptly cut off starter power automatically like this, and needn't human intervention.Simultaneously, when normal working of engine, the output control terminal 6 of single-chip microcomputer is always high level, the contact of relay 1 disconnects all the time, even if the ignition switch misoperation is to the starting position, single-chip microcomputer 5 can not enter start-up sequence yet, the power supply of starter motor can not connected certainly yet, thereby has avoided the infringement that starting system caused because of this misoperation.

The utility model can be piloted engine in (for example 5 seconds) in the time of setting, and cuts off starter power automatically according to the engine speed of setting (when for example certain motor reaches 260 rev/mins).If motor has some problem, in the time of setting, start not, then native system also can cut off starter power automatically, and can start once more after time-delay a period of time (for example 15 seconds), further protects starting system (comprising storage battery).

Claims

1. vehicle starting device, it is characterized in that: described vehicle starting device comprises single-chip microcomputer (5), relay (1) by single-chip microcomputer (5) control, one termination automobile power source positive pole of the normally opened contact of relay (1), another termination starter motor control power input of relay normally open contact, the input end of single-chip microcomputer (5) comprises engine rotational speed signal input end (8) and activating signal input end (9).

2. a kind of vehicle starting device according to claim 1, it is characterized in that: an end of the electromagnetic coil of described relay (1) is connected with the input power supply, the other end links to each other with the collector electrode that drives triode (7), driving the base resistance R3 of triode (7) and the base resistance R4 of the triode of using as phase inverter (11) links to each other with microcontroller power supply respectively, the collector electrode of the triode of using as phase inverter (11) links to each other with the base stage that drives triode (7), and the base stage of the triode of using as phase inverter (11) links to each other with the output control terminal (6) of single-chip microcomputer.