SU737274A1 - Apparatus for determining the value of dynamic limitation of motor vehicle speed - Google Patents

Description

The invention relates to the field of automotive industry, to the section of technical diagnostics and testing of automobiles, specifically to means for monitoring and diagnosing the functioning of the automobile directly in the process of traffic, and can be used to determine the dynamic limitation of the vehicle’s speed to a safe level dictated by the requirements N and Yami 'without any doubts about the ability of a couple to reduce the braking performance of a car due to the deterioration of weather, road conditions and its technical condition.

The closest known technical solution is a device for determining the magnitude of the dynamic speed limit · vehicle movements, containing a deceleration sensor and an indication unit (1].

A disadvantage of the device is the need for a subjective assessment of the device’s readings, which the driver makes based on his individual experience, which entails pre-transport accidents caused by exceeding the safe level of speed in some cases, and unjustified decrease in speed in others.

CAR

The aim of the invention is to prevent the subjective errors of the driver Iri 'choosing a vehicle speed' based on the assessment of the parameters of the deceleration of the vehicle ⁵ during braking.

The goal is achieved in that ^{: the} device is equipped with a pressure sensor in the brake drive, a sensor · starting to turn on ¹⁰ brains, a speed limiter for the vehicle and a “computing unit of interconnected” information processing, consisting of a circuit for determining the achievement of the maximum possible deceleration, an input multi-channel storage device , operating 'block and output storage device, etc.'''''Гъм' outputs of the sensors of deceleration, pressure 'in the drive of brakes and' first 'of their-' inclusion are connected to 'inputs mnb'goYaI'a'l'YOgo 'storage device and to ^? a scheme for determining the achievements of the maxim of a possible slowdown, the outputs of which, together with the output of the speed limiter, are connected to the corresponding inputs of the operating unit, connecting the GB to the information input of the output 'storage device, connected to the display unit, and to the allowing' input of the output storage device connected

737274.

4 output circuit determining the achievement of the maximum possible deceleration.

The drawing shows a block diagram of a device for determining the magnitude of the dynamic limitation of vehicle speed.

The device consists of a set of sensors 1-3, respectively, of the car deceleration, pressure in the brake drive and their start (inclusions, which, together with the constant speed limiter 4, are connected to the computing unit 5 connected to the speed limiting value indication unit 6.

The computing unit contains a circuit 7 for determining the achievement of the maximum possible deceleration and an input multi-channel storage device 8, to which sensors 1-3 are connected, an operating unit 9, to which an output storage device 8, a circuit 7 and a setter 4 are connected, and connected to the circuit 7 with an output storage device 10 to which an indication unit 6 is connected. ²⁵

The condition for achieving the maximum possible deceleration is fixed at the moment of reaching the steady-state value of deceleration with a continued increase in pressure in the brake drive or with a maximum of 30 (as low as possible pressure value.

The pressure parameters are also used to correct the deceleration parameters (for example, the drive response time and deceleration rise time to 35 maximum) depending on the speed of the brakes on, that is, on the deviation of the braking mode from the emergency.

The set of controlled deceleration parameg- moat ⁴⁰ has a predetermined degree of accuracy to display the vehicle deceleration process, for example, (can be used lag time drive enable ,. slowing the rise time to maximum 45 .i steady deceleration..

A predefined form of compliance (between the magnitude of the loss of brake efficiency and the level of speed limit 50 is reflected in the corresponding construction of the operating unit.

The device is started by the sensor 3 of the beginning of the brake application. During the lag time of turning on the drive of the brakes, 55 brains. and time. Rising deceleration values ·· by the monitored sensors 1, 2, and 3 parameters are entered into the multichannel memory 8 as they are. ..appearances. From there pego fixed parameters ⁶⁰ '.postupayut pas input operation unit 9 which corrects, delay parameters, determining values, restrictions limit the movement speed setter installed, and it outputs a 65: the output memory 10.

If the maximum possible deceleration in this braking is achieved, then the circuit 7 gives permission for the reception of information. In the output memory device> 10, where the speed limit level is entered from the operation unit 9.

If, however, the maximum possible deceleration was not achieved, then the memory device 10 receives a ban on receiving information from circuit 7, and the previous value of the speed limit is stored in it, and turning off the sensor 3 after braking is completed will stop the device and reset storage device 8.

About the magnitude of the speed limit in the intervals between braking, in which the maximum possible deceleration of the car was achieved, the driver informs the block 6 indication.

Claims (1)

the output of the scheme for achieving the maximum possible moderation. In the drawing, a block diagram of the Deposition of the Roof for determining; the value of —1 dyne of the first limiting image: 1 1 of the speed of driving a car is shown. The device is self-consuming sensors / -3, respectively, for; slow car, pressure in the brake system and the start of their activation, which, together with a constant speed limiter 4, are connected to the calculating unit 5, which is associated with the value of the indicator 6, speed limits. The computational unit contains a circuit 7 for determining the achievement of the maximum possible deceleration and an input channel for a multimedia channel: a downstream device 8, "which are connected / -3 operating 6vioK 9, to which an output memory device 8 is connected, a circuit 7; and setting 4" associated with cVm 7 with an output cc apt, an impulse device 10 to which block 6 ind is connected: ikashchi | i. The condition of reaching maximally possible; slowing (slows down at the moment of reaching steady state, and slowing down the continuous pressure increase in the brake drive or at the maximum possible pressure value. In addition, the pressure parameters l are used to correct the retardation parameters ( for example, the time of the drive and the time delayed and to the maximum), depending on the speed at which the brakes are applied, i.e., from the deviation of the braking mode from the emergency one. deceleration must with a given degree of accuracy reflect the process of slowing down a car, for example, the drive lag time, the rise time of the deceleration to the maximum, and setting 1: its deceleration value can be used. "Determined beforehand, the form that corresponds to the loss value The effective-NOSE .TI of brakes and y-equal to the limiting speed are reflected in the corresponding construction of the operating unit. The device is started by the sensor 3 of the beginning of the activation of the brakes. During the time lag-or-turn on the drive torus and. c. the time of increase of deceleration by the significant.– controlled sensors 1, 2, and. Larameters are stored in the multichannel storage device 8 as far as they appear. From it, the parameter recorded there, and the data are entered at the input of the operating unit 9, which performs the correction, deceleration parameters, determining the value, limiting the speed limit set by the driver. and 6 6 outputs it to the output memory 10. If the Mmaxx possible deceleration is reached in this Braking, then the circuit 7 issues permission to use information (At the output gate | Inauer; its device 10, where the speed limit level Movement as much as possible. (No slowdown was achieved, it was on aalomanyush; its device W from scheme 7 imposes a ban on the use of information, and it keeps the same value as the speed limit, and turning off the sensor 3 after braking is completed leads to stopping the operation of the device on the reset of the storage device 8. On the magnitude of the speed limit in the internal intervals between braking, in which the minimum possible car deceleration is reached, the driver informs the indication unit 6. Determine the magnitude of the dynamic limiting speed of the vehicle (Iuhani car, containing the deceleration sensor and display unit, which is the fact that, with a slit warning the driver’s subjective errors when choosing a driving speed on the basis of evaluating parameters for (slowing down at a torch, it is equipped with a pressure sensor in the brake actuator, sensors for starting the brakes on, a master of the movement of the vehicle, and a computing unit of interconnected information processing, which is derived from the scheme for determining the maximum possible minimum slowing down, the INPUT multichannel bilge device, olera.atsionny block and the output, wedging device, while the outputs of the pressure retarding sensors in the brakes and the start of their activation are connected s to the inputs of a multichannel-zapo1minayusch his device and to the circuit to achieve tim-determined .maksEGmalno voemozhnagb retard, co-toryh outputs together with outputs prede- setpoint. The speeds are connected to - with the corresponding moves of the olaschion block connected to., n1fo; r: m; a.cyoan. To the input of the output memory device, connected to the indnca-cisi unit, and to the enable move of the OUTPUT memory device is connected as much as possible for you | medevi. .. Source of information taken in the exploitation of the foreclosure: 1. N. Bukharin. Automobile Brake Systems. M.-L., Maschgiz, 1950, p. 62-66 ppototyp.