Automotive collision warning device

FIELD: transport.

SUBSTANCE: proposed device additionally comprises unit configured in definite way to determine encounter conditions, indicator of safe approach time and warning device to annunciate critical safe distance to obstacle. Note here that car speed meter, first and second data processing system outputs and power supply are connected to first, second, third and fourth inputs of encounter condition unit with its first and second outputs connected to inputs of safe approach time indicator, and critical safe distance annunciator.

EFFECT: higher safety.

2 cl, 2 dwg

 

The invention relates to radar systems security while driving.

Closest to the invention is a device for preventing collision of the vehicle with an obstacle, which contains a set of identical integrated modules, including ascanius, astigmatic transmitting optical system which forms a pattern of pulse ranging and continuous Doppler optical radars operating in different wavelength ranges. To the output of the pulsed distance measuring optical locator of each module connected m time selectors, allocating the corresponding intervals of the distance to the obstacle. To output a continuous Doppler optical locator module connected k bandpass frequency filter that selects the intervals of relative velocities of the approaching obstacle. The temporary outputs of selectors and bandpass frequency of each module connected to the corresponding inputs of the data processing system, which also receives information on the own vehicle speed. The outputs of the information processing system connected to the lighting and sound systems alert the driver, who with the help of light and sound signals alert you to the presence, direction and distance to Ave pastia, and also to the onboard computer that controls the motion parameters of the vehicle [1].

The disadvantage of this device is the inability to define the time of approach of the vehicle to the critical importance of the safe distance of the vehicle to the obstacle.

The purpose of the invention is to increase safety of operation of the vehicle by determining the time of approach of the vehicle to the critical value a safe distance to the obstacle.

The solution to this objective of the invention is achieved by a device for preventing collision of the vehicle with an obstacle, consisting of a set of identical integrated modules, each of which contains an optical transceiver system, pulse ranging and continuous Doppler optical radar, operating at different wavelengths, the information processing system, system lighting and system warnings, meter private vehicle speed and vehicle computer, while transmitting optical system each module is made Askaniya astigmatic, paired simultaneously with the pulsed distance measuring optical locator and continuous Doppler optical locator, and forming stationary with respect to the automobile pattern of these locators, the output pulse Yes Gnomeregan optical locator connected inputs "m" temporary selectors, and to output a continuous Doppler optical locator connected to the inputs of k bandpass frequency filters, the outputs of all time selectors and bandpass frequency filters connected to respective inputs of the data processing system, identifying sector signals from obstacles, the spacings up to them, the relative speed of approach and evaluates the degree of risk of collision, auxiliary input of the information processing system connected to the output of the meter's own vehicle speed, to the third output of the information processing system connected to the inputs of the systems sound and light warnings with audible and light signals warn the driver about the direction, the distance to the obstacle and the degree of danger of collision with the obstacle, as well as access on-Board computer of the vehicle, which issues commands to the control system and braking of the vehicle, which introduced additional unit determining the conditions of convergence of the vehicle with an obstacle, the time indicator of the convergence of the vehicle to the critical value a safe distance to the obstacle, the detector alerts about critical importance to the safe distance of the vehicle to the obstacle, and the output of the meter's own vehicle speed, the first and second outputs si is theme of information processing, the power source are connected respectively to the first, second, third and fourth inputs of the block definition of terms of approach of the vehicle with an obstacle, the first and second outputs of which are connected respectively to the inputs of the time indicator of the convergence of the vehicle to the critical value a safe distance to the obstacle, alarm warning of critical importance to the safe distance of the vehicle to the obstacle, with the first and second output data processing system generates signals corresponding to the current distance to the obstacle and the speed of approach of the vehicle with an obstacle.

In addition, the block determining the conditions of convergence of the vehicle with the obstacle consists of subtractive device, element, OR group n keys, the first, second and third control devices, signals, n of the first group, second, third and fourth threshold devices, a divider, a differentiating circuit, pulse generator, the trigger, the first and second elements is NOT, the element And the counter, and the first, second, third and fourth inputs of the block definitions of terms of approach of the vehicle with an obstacle are, respectively, the second inputs of the n first threshold devices, the first input of subtractive device, the divider and the input of the differentiating circuit, the second input of subtractive device connected to vyhoda the item OR the output of subtractive device connected with the second input of the divider, the output of which is connected with the second inputs of the second, third and fourth threshold devices, the first inputs of which are connected to the outputs of the third unit signals, the output of the second threshold device through the first element is NOT connected to the first input of the trigger, a second input connected to the output of the differentiating circuit, the output of which is also connected to a second input of the counter, the trigger output is connected to the first input element And the second and third inputs of which are connected respectively to the outputs of the pulse generator and the third threshold device, the output element And is connected to the first input of the counter outputs the second unit is connected with the first inputs of the first group of the n-threshold devices, the outputs of which are connected with the second key inputs, the first inputs of which are connected to the outputs of the first unit signals, the outputs of the keys are connected with the inputs of the element OR the fourth threshold device connected to the input of the second element, the outputs of the counter and the second element are respectively the first and second outputs of the block definition of terms of approach of the vehicle with an obstacle.

New items with significant differences for the device are the power determine the conditions of convergence of the car with the pre is atstat, the time indicator of the convergence of the vehicle to the critical value a safe distance to the obstacle, the detector alerts about critical importance to the safe distance of the vehicle to the obstacle and the relationships between known and new elements.

Figure 1 shows the block diagram of the device to avoid collision of the vehicle with an obstacle, figure 2 - block prediction to a safe distance to the obstacle means.

The device comprises (1) integrated modules 1i, Askaniya astigmatic optical transceiver system 2i, pulsed distance measuring optical locators 3i, continuous Doppler optical locators 4i, where i=l...n, temporary selectors 5ij, where j=l...m, bandpass frequency filters 6 、 it, where t=l,...k, the information processing system 7, system warnings 8, system warning light 9, the meter's own speed of the vehicle 10, on-Board computer of the vehicle 11, block 12 definition of terms of approach of the vehicle with an obstacle, the indicator 13 time of approach of the vehicle to a critical value a safe distance to the obstacle, the detector 14 warning of critical importance to the safe distance of the vehicle to the obstacle.

Unit 12 definition of terms of approach of the vehicle with the obstacle is (figure 2) of subtractive device is istwa 15, element OR 16, n-keys 17, the first 18, 19 second and third 20 knobs signals, n is the first 21 group, second 22, third 23 and fourth 24 threshold devices, divider 25, a differentiating circuit 26, the generator 27 pulses, trigger 28, the first 29 and second 30 elements do NOT, element And 31, a counter 32.

The warning device car collision with obstacles is as follows.

Each of the integrated modules 1i device is located and oriented on the vehicle in such a way that is responsible for its own sector monitoring traffic conditions, while Askaniya astigmatic optical transceiver system 2i form a pattern of the pulsed distance measuring optical locator 3i and continuous Doppler optical locator 4i. The range of detection of the pulsed distance measuring optical locator 3i with temporary selectors 5ij is divided into a number of intervals, the magnitude of which is determined by the aggregate parameters such as detection range, maximum relative rate of convergence to the obstacle, the reaction time of the driver, performance, braking systems, and others. Similarly, the measuring range of relative velocities of the approaching obstacle with continuous Doppler optical locator 4i by means of a strip h is frequency filter 6 、 it is broken down into a number of intervals of the relative speeds of convergence. In case of obstacles on the way of driving signals from the pulsed distance measuring optical locator 3i and continuous Doppler optical locator 4i carrying the information about the distance, direction and speed of convergence with the obstacle, through appropriate temporary selectors 5ij and bandpass frequency filters 6 、 it is received in the information processing system 7. At the same time it receives signals from the meter's own vehicle speed 10. The information processing system 7 performs the identification of the sectors receiving signals from obstacles, determines the interval of distances, relative speeds of convergence and estimates the degree of risk of collision. Signals warning of the presence, direction and degree of convergence with the obstacle is displayed on the system audible warning 8 and the system warning light 9 in the most simple, intuitive and ergonomic shape that does not require distract the driver from the traffic conditions. In case of an emergency situation or the slow reaction of the driver, the information processing system 7 using the on-Board computer 11 actuates the control system or in an emergency.

Unit 12 definition of terms of approach of the vehicle with the obstacle is to determine the time of approach of the vehicle to a dangerous distance to the obstacle, when et is m, the outputs of the meter 10 of the own vehicle speed is supplied to the first input of the block definitions of the terms convergence and respectively to the second inputs of the first 21 n-threshold devices, the first input of which receives signals from the outputs of the second knob 19 of the signals.

The first 21 n-threshold devices, is designed to determine the range of vehicle speeds.

Depending on the speed range of the vehicle signals from the respective outputs of the first group 21 n-threshold devices are received in the corresponding second input keys 17, the input of which receives the corresponding reference signals STEwith one of the outputs of the first 18-unit signals.

This determines the reference value of the braking distance of the vehicle depending on its speed.

Subtractive device 15 provides the subtraction of the signals, on the one hand, corresponding to the value of the current distance to the obstacle Stechand on the other hand, the corresponding reference value of the braking distance STewhile the signal corresponding to the STewith the output of one of the keys 17 through the OR element 16 is supplied to the second input of subtractive device 15, to the first input of which receives the signal corresponding to the Stechfrom the first output system 7 information processing.

From the output of subtractive device 15, the signal corresponding to the value of Stech-STesupplied to the second input of the divider 25, at the first input of which receives the signal (s) is related to the value of V SBLwith the second release of system 7 information processing.

The second 22, third 23 and fourth 24 threshold device provides fixation of the moments pass car three values of the distance to the obstacle, while the signal corresponding to the value offrom the output of the divider 25 is applied to the second inputs of the second 22, third 23 and fourth 24 threshold devices, the first input of which receives signals from the outputs of the third 20-unit signals.

At the same time on first and second and third outputs of the third sadacia signals are formed with constant values for1to2and "0".

In the process of rapprochement of the vehicle with an obstacle, at the time when the achievement of the values of the signals at the inputs of the second threshold deviceoutput 22 of the second threshold device signal through the first 29 item is NOT received at the first input of the trigger 28, the second input of which counter 32 pulse signal reset output from the differentiating circuit 26, the output of the trigger 28, the signal at the first input element And 31, on the second and third inputs of which receive the signals respectively output from the generator 27 pulses and the third threshold device 23, with the output element And 31 signals received at the first input of counter 32.

In the process of rapprochement between the waveguide is mobile with obstacle at the time of achievement of the signals at the inputs of the third threshold deviceremoved the output signal of the third threshold device 23 and, accordingly, with the third input element And 31.

Thus, the outputs of the counter 32 is fed to the input of the indicator 13 time of approach of the vehicle to the critical value a safe distance to the obstacle.

In the process of rapprochement of the vehicle with an obstacle, at the time of achievement of the signals at the inputs of the fourth threshold deviceremoved the output signal from the fourth threshold device 24 and through the second element 30 is NOT supplied to the input of the detector 14 warning of critical importance to the safe distance of the vehicle to the obstacle.

This ensures safer operation of the vehicle in the process of rapprochement with the obstacle by determining the time to the critical value of the safety distance of the vehicle to the obstacle.

Sources of information

1. Konnov VP, Polish J.E., patent RF №2348948, 10.03.2009,, CL IPC G01S 13/93 (2006.01). patentee: closed joint stock company "Scientific-production enterprise "Mifoteks"

1. Device for preventing collision of the vehicle with an obstacle, consisting of a set is gentechnik integrated modules, each of which contains an optical transceiver system, pulse ranging and continuous Doppler optical radar, operating at different wavelengths, the information processing system, the system light and sound warning, meter private vehicle speed and vehicle computer, and transmitting the optical system of each module is made Askaniya astigmatic, paired simultaneously with the pulsed distance measuring optical locator and continuous Doppler optical locator and forming stationary with respect to the automobile pattern of these locators, the output of the pulsed distance measuring optical locator connected to the inputs of m time selectors, and to output a continuous Doppler optical locator connected to the inputs of k bandpass frequency filters, the outputs of all time selectors and bandpass frequency filters connected to respective inputs of the data processing system, identifying sector signals from obstacles, the spacings up to them, the relative speed of approach and evaluates the degree of risk of collision, auxiliary input of the information processing system connected to the output of the meter's own vehicle speed, to the third output with the system of the information processing inputs connected systems sound and light warning, using sound and light signals to warn the driver about the direction, the distance to the obstacle and the degree of danger of collision with an obstacle, as well as access on-Board computer of the vehicle, which issues commands to the control system and braking of the vehicle, characterized in that it further introduced the definition block of the conditions of convergence of the vehicle with an obstacle, the time indicator of the convergence of the vehicle to the critical value a safe distance to the obstacle, the detector alerts about critical importance to the safe distance of the vehicle to the obstacle, and the output of the meter's own vehicle speed, the first and second outputs of the data processing system, the power source are connected respectively to the first, second, the third and fourth inputs of the block definition of terms of approach of the vehicle with an obstacle, the first and second outputs of which are connected respectively to the inputs of the time indicator of the convergence of the vehicle to the critical value a safe distance from the obstacle alarm warning of critical importance to the safe distance of the vehicle to the obstacle, with the first and second outputs of the data processing system generates signals corresponding to the current distance to the obstacle and the speed of approach of the vehicle with prepa the action.

2. The device according to claim 2, wherein the block of determining the conditions of convergence of the vehicle with the obstacle consists of subtractive device, element, OR group n keys, the first, second and third control devices, signals, n is the first group of threshold devices, second, third and fourth threshold devices, a divider, a differentiating circuit, pulse generator, the trigger, the first and second elements is NOT, the element And the counter, and the first, second, third and fourth inputs of the block definitions of terms of approach of the vehicle with an obstacle are, respectively, the second inputs of the n first group of threshold devices, the first the subtractive inputs of the device, the divider and the input of the differentiating circuit, the second input of subtractive device connected to the output of the OR element, and the output of subtractive device connected with the second input of the divider, the output of which is connected with the second inputs of the second, third and fourth threshold devices, the first inputs of which are connected to the outputs of the third unit signals, the output of the second threshold device through the first element is NOT connected to the first input of the trigger, a second input connected to the output of the differentiating circuit, the output of which is also connected to a second input of the counter, the trigger output is connected to the first input element And the second and third inputs which soy is inany respectively to the outputs of the pulse generator and the third threshold device, the output element And is connected to the first input of the counter, the outputs of the second unit is connected with the first inputs of the first group of the n - threshold devices, the outputs of which are connected with the second key inputs, the first inputs of which are connected to the outputs of the first unit signals, the outputs of the keys are connected with the inputs of the element OR the fourth threshold device is connected to the input of the second element, the outputs of the counter and the second element are respectively the first and second outputs of the block definition of terms of approach of the vehicle with an obstacle.



 

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