RU2224670C1 - Passenger car braking warning device - Google Patents

Abstract

FIELD: transport engineering; car braking warning light systems. SUBSTANCE: proposed device includes brake pedal, brake pedal change-over switch, fuse unit, multifunctional change-over switch, brake left-hand and right-hand warning lamps, brake upper warning lamp and connecting wires. Novelty is that proposed device is furnished with electronic unit, pressure transmitter, two branching units and two pairs of additional brake warning lamps. Input of electronic unit is coupled with output of pressure transmitter whose input is coupled with third output of brake pedal change-over switch, and first and second output of electronic unit are connected with inputs of first and second branching units whose outputs are coupled with second inputs of corresponding pairs of lamps, first inputs of each pair being coupled with car frame. Electronic unit contains reference voltage unit, voltage comparator for first pressure level, voltage comparator for second pressure level, first and second pressure level, first and second current amplifiers. First input of reference voltage unit is coupled with fuse unit, and second input, with car frame. First and second outputs of reference voltage unit are coupled with second inputs of voltage comparators for first and second pressure levels, respectively. Outputs of voltage comparators for first and second pressure levels are coupled with inputs of first and second current amplifiers, respectively. EFFECT: higher information content of light warning system, improved reliability and safety on road. 2 cl, 3 dwg

Description

 The device relates to a lighting and light alarm system designed to ensure the safe operation of the car, and can be installed on all cars.

 One of the components of the lighting and signaling system is braking signals, informing the participants of the movement about a decrease in the speed of the car. Known brake signals of cars allow to ensure safe movement of the car on the roads at any time of the day. At the same time, they do not have sufficient information content. And when you lightly press the brake pedal and during emergency braking, the brake signals are triggered. At the same time, the amount of deceleration is not reflected in any way, which can lead to a traffic accident.

 Close in technical essence to the claimed invention is a braking alarm device Ford Explorer 1994 (FORD, BRONCO II / EXPLORER / RANGER, 1983-94, REPAIR MANUAL, 1994, CHILTON BOOK COMPANY, ISBN 0-8019-8555-2; P.6 -114), taken as a prototype.

 This vehicle braking alarm includes a brake pedal, a brake pedal switch, a fuse box, a multi-function switch, left and right brake light lamps, an upper brake light lamp and connecting wires.

Functional diagram of this device is presented in figure 1. Figure 1 marked:
TP - brake pedal;
PTP - brake pedal switch;
BPR - fuse box;
MFP - multifunction switch;
LSTv - upper brake signal lamp;
LSTl - brake light lamp left;
LSTp - brake light lamp right.

 A single line indicates electrical connections, and a double line indicates mechanical ones. In FIG. 1 are connected by electrical connections: Bpr, PTP, MFP, LSTl, LSTp, moreover, the BPR output is connected to the second input of the accident, the second output of which is connected to the input of the MFP; the first and second outputs of the MFP are connected to the second inputs LSTl and LSTp, respectively. The output of the TP is mechanically connected to the first input of the accident, the first output of which is connected by electrical communication with LSTv.

The operation of the vehicle braking alarm device is as follows:
when you press the brake pedal (TP), the brake pedal switch (PTP), mechanically connected to it, turns on, while the electric current from the BPR output goes to the second input of the accident, from its first output to the second input of the LSTv, and from the second output to the input MFP, from the first and second outputs of which voltage is supplied to the second inputs LSTl and LSTp, respectively; since the first outputs of LSTv, LSTl and LSTp are connected to the "mass" of the car, the power supply circuits of the brake signal lamps are closed and they light up.

 However, these braking signals do not inform the other driver about the braking mode: it is sharp, dynamic or smooth, with low deceleration. When driving in the city at short distances, this creates an additional psychological burden for drivers and leads to fatigue.

 The task of the invention is to increase the information content of the lighting system and light alarm.

 To solve this problem, the well-known road signaling system of the car is supplemented by an electronic unit and a pressure sensor in the brake system, the signal from which controls the inclusion of additional brake lights.

 The invention is illustrated in figure 2 and figure 3.

 Figure 2 - device alarm mode braking a car.

 FIG. 3 - device alarm mode braking a car. The electronic unit.

In Fig.2 additionally introduced elements are indicated:
DD - pressure sensor in the brake system;
EB - electronic unit;
UR1 - the first branch node;
UR2 - the second branching unit;
1LSTl - the first additional brake signal lamp left;
1LSTp - the first additional brake signal lamp right;
2LSTl - the second additional brake signal lamp left;
2LSTp - the second additional brake signal lamp, right.

Figure 3 marked:
BON - block of reference voltages;
USN1 - voltage comparison device for the first pressure threshold value;
USN2 - voltage comparison device for the second pressure threshold value;
UsT1 - the first current amplifier;
UsT2 is a second current amplifier.

 The electronic unit is a circuit built on two comparators comparing the signal of the pressure sensor in the brake system with threshold voltage values, and the reference voltage unit generating these voltages. If the first threshold value is exceeded, the control signal is generated at the output of the first comparison device, which is amplified and feeds the first pair of additional lamps through the branching unit. If the second threshold value is exceeded, a control signal is generated at the output of the second comparison device, which is amplified and feeds a second pair of additional lamps through the branching unit.

The operation of the signaling device of the braking mode of a car is similar to the prototype, but additionally:
the voltage from the third output of the PTP goes to the input of the DD, powering it; in the brake system, pressure begins to increase and at the DD output there appears an electric analog signal proportional to it, which arrives at the first inputs of USN1, USN2 and is compared with the threshold values of the signal received from the first and second outputs of the BON to the second inputs of USN1 and USN2, respectively;
when the signal exceeds the value of the first threshold voltage, the control signal is generated at the output of USN1, which is fed to the input of UST1, amplified and fed from its output to the input of UR1, from the first and second outputs of UR1 the voltage goes to the second inputs 1LSTl and 1LSTp, respectively, since the first inputs are connected with the "mass" of the car, then the electric circuit of the first pair of additional lamps closes and they light up;
with a further increase in pressure in the system, the signal from the DD output exceeds the value of the second threshold voltage, the control signal is generated at the output of the USN2, which is fed to the input of UST2, amplified and from its output goes to the input of UR2, voltage is supplied to the second inputs from the first and second outputs of UR2 2LSTl and 2LSTp, respectively, since their first inputs are connected to the "mass" of the car, the electric circuit of the second pair of additional lamps closes and they also light up.

 This device will increase the information content of the lighting system and light alarm: depending on the braking mode, the corresponding number of lamps light up - with a slight amount of deceleration, only two standard brake light lamps light up, with an increase in pressure in the brake system, and therefore an increase in deceleration, two more lights up, and when braking abruptly - all the brake lights. In addition, the reliability of the system is increased: in the event of a failure of the brake pedal switch or standard brake lamp lamps, the control signal from the pressure sensor will provide an alarm about braking with additional lamps. Thus, the present invention will increase the reliability of the lighting system and light signaling and improve traffic safety.

Claims (2)

1. The signaling device of the braking mode of a car, including a brake pedal, a brake pedal switch, a fuse box, a multifunction switch, a left and right brake lamp, an upper brake lamp and connecting wires, characterized in that it is equipped with an electronic unit, a pressure sensor, two branch nodes and two pairs of additional brake signal lamps, the input of the electronic unit being connected to the output of the pressure sensor, the input of which is connected to the third output of the switch ator pedal brakes, and first and second outputs of the electronic unit - respectively to the inputs of the first and second branch nodes, whose outputs are connected to second inputs of respective pairs of lamps, each of the first inputs of which are connected with the "weight" of the car. 2. The device for signaling the braking mode of a passenger car according to claim 1, characterized in that the electronic unit comprises a reference voltage unit, a voltage comparison device for a first pressure level, a voltage comparison device for a second pressure level, first and second current amplifiers, the first input of the unit the reference voltage is connected to the fuse box, and the second input to the "mass" of the car, the first and second outputs of the reference voltage block are connected to the second inputs of the voltage comparison devices for the first and second about pressure levels, respectively, the outputs of the voltage comparison devices for the first and second pressure levels are connected to the inputs of the first and second current amplifiers, respectively.

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