KR19990010489A - Automotive Power Off Device - Google Patents

Abstract

The present invention relates to a power cut-off device for a vehicle, and particularly, a collision G sensor 108 for detecting a deceleration during a collision of a vehicle to cut off power and fuel during a collision of the vehicle; An engine rotation sensor 107 for detecting an engine speed; An ammeter 103 and a voltmeter 102 connected in series and in parallel to the power input terminal side of the sub portable link 40 and outputting a sensed value; It is composed of a power and fuel cut-off unit 100 for automatically cutting off the power and fuel supply based on all the output detection signal to cut off the power flowing to various loads when the vehicle crashes while driving the engine By preventing the fuel input, it is possible to prevent the occurrence of sparks due to the overwhelming of the wire during the collision, the exposure of the wire, and the fire due to the leakage of the fuel.

Description

Automotive Power Off Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cut-off device for a vehicle. In particular, when a vehicle crashes, the power is cut off to various electrical equipments and at the same time, the fuel is prevented from being injected into the engine. The present invention relates to a vehicle power cut-off device for fire prevention in case of a collision of a vehicle, which can prevent a fire occurring due to a spark occurrence due to exposure of a wire and an electric wire.

In general, a conventional vehicle is not provided with a separate fire protection device, as shown in Figure 1, the sub-housable link 40 is connected in series to the battery 10 and the alternator 20, and the sub-housable link It consists of the electrical equipment load stage 50 connected in series with (40).

According to this configuration, the power output from the battery 10 or the alternator 20 is applied to the sub portable link 40, and the applied voltage is applied to each of the fuses 41 to 44 in the portable link 40. Power required for the electrical equipments 51 to 54 was applied to drive the electrical equipments 51 to 54.

However, such a conventional power supply system causes sparks due to damage to the coating or wires due to overcurrent and impact force of the vehicle, and the sparks ignite the fuel flowing out of the engine in the event of a collision. There was a problem that the damage caused by the fire is aggravated and fail to cope with the enhanced safety regulations of the vehicle.

The present invention has been made to solve the above problems to provide a vehicle power cutoff device that prevents a fire that may occur in the event of a crash by cutting off the fuel supply and at the same time cut off the power flowing to various electrical equipment in the event of a vehicle crash. There is a purpose.

1 is a circuit diagram showing a conventional power supply system,

2 is a circuit diagram showing a vehicle power cut-off device according to the present invention.

Explanation of symbols for the main parts of the drawings

100: power supply and fuel cutoff unit 101: central processing unit

102 voltmeter 103 ammeter

104: electronic switch 105: variable resistor

107: engine rotation sensor 108: collision G sensor

109: fuel pump

In order to achieve the above object, the present invention includes a collision G sensor for detecting a deceleration during the collision of the vehicle; An engine rotation sensor for sensing a rotation speed of the engine; An ammeter and a voltmeter connected in series and in parallel to a power input terminal of the sub portable link and outputting a sensed value; On the basis of all the output detection signal is characterized in that the power supply and the fuel blocking unit for automatically cutting off the power supply and fuel supply.

The power and fuel cut-off unit may output a control signal based on an input detection value; An electronic switch operated by a control signal of the central processing unit and connected in parallel on a line of a power input end of a sub-housable link; A variable resistor connected to the electronic switch and configured to vary a resistance value by a control signal of the central processing unit; The fuel pump is configured to automatically cut off the fuel supply under the control of the central processing unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a circuit diagram of a vehicle power cut-off device according to the present invention will be described below with the same reference numerals for the same configuration as the prior art.

As illustrated, a fuse 30 connected to the battery 10 and the alternator 20, a sub-housable link 40 connected in series to the fuse 30, and an electric appliance connected to the sub-housable link 40 in series. An electronic switch 205 and a variable resistor 106 connected to the other end of the electronic switch 105 in parallel on the line of the load stage 50, the fuse 30 and the sub-housable link 40, A central processing unit 101 connected to the electronic switch 105 and the variable resistor 106 to control the engine switch, an engine rotation sensor 107 and a collision G sensor (10) which output a detection signal to the central processing unit 101; 108, a voltmeter 102 and an ammeter 103 connected in parallel and in series on the lines of the fuse 30 and the sub-huble link 40 and connected to the central processing unit 101, and the center It consists of the fuel pump 109 which inputs the control signal of the processing apparatus 101. FIG.

Hereinafter, the operation of the present invention in detail.

Power generated from the battery 10 and the alternator 20 while the vehicle is running is applied to the sub-housable link 40 and through the fuses 41 to 44 of each of the electrical appliances 51 to 54 of the electrical load stage 50. The voltmeter 102 and the ammeter 103 detect the strength of the voltage and current flowing through the sub-housable link 40 at all times and output a signal to the central processing unit 101.

Accordingly, the central processing unit 101 measures the resistance value of the sub portable link 40 by the intensity of the input voltage and current, and controls the resistance value of the variable resistor 106 to be lower than this.

When the vehicle collides while driving, the detection values of the collision G sensor 108 and the engine rotation sensor 107 are output to the central processing unit 101.

The central processing unit 101 determines the collision of the vehicle on the basis of the input signal, turns on the electronic switch 105, and outputs a control signal to supply fuel to the fuel pump 109 when the engine continues to rotate after the collision. To block.

Therefore, the power supply is applied to the electronic switch 105 and the variable resistor 106 having a lower resistance value than the sub-housable link 40 side and grounded.

In addition, if an overcurrent flows after the collision, the power is cut off by disconnection of the fuse 30.

As described above, the present invention constantly measures current and voltage while driving a vehicle so that the variable resistor maintains a resistance value lower than the resistance of the load stage of the electric component, thereby operating the electronic switch in the event of a vehicle crash and grounding the power supply. By shutting off the fuel supply of the fuel pump, it is possible to prevent a fire that can occur in a collision, thereby increasing the safety of the vehicle and additionally protecting expensive electronics and electronic control devices.

Claims (2)

A collision G sensor for detecting a deceleration during a collision of the vehicle; An engine rotation sensor for sensing a rotation speed of the engine; An ammeter and a voltmeter connected in series and in parallel to a power input terminal of the sub portable link and outputting a sensed value; Vehicle power cut-off device comprising a power and fuel cut-off unit for automatically cutting off the power and fuel supply based on all the output detection signal. The apparatus of claim 1, wherein the power and fuel cut-off unit comprises: a central processing unit for comparing and processing the output based on the detected value and outputting a control signal; An electronic switch connected in parallel on a line on a side of a power input end of a sub portable link which is switched by a control signal of the central processing unit; A variable resistor connected to the electronic switch and varying a resistance value according to a control signal of the central processing unit; And a fuel pump for automatically cutting off the fuel supply under the control of the central processing unit.