SU920792A2 - Traffic control device - Google Patents

Description

The invention relates to the control of the movement of vehicles and can be applied in systems of centralized control and management of transport routes.

According to the main author. St. № ⁵ 533 955 discloses a device which comprises sensors installed in the path, the outputs of which are connected to first inputs of the shift registers, the shift register outputs are connected to first ¹⁰ rows vho- indicator, and electronic clocks, the first output being coupled to the input of the time setting unit, the output of which connected to the second inputs of the shift registers, and the second output of ¹⁵ electronic hours is connected to the second input of the indicator. The device allows you to visualize the traffic situation on the indicator (mimic diagram ^ simulating the movement of a vehicle by a point on the mnemonic diagram, which moves when the information is shifted in the shift register. Information is entered into each shift register when the vehicle crosses the installation line of the corresponding sensor [1].

The main disadvantage of such a device is the inability to take into account the real conditions of traffic. In the case of favorable road conditions, the speed of the transport unit may increase slightly, and the vehicle will reach the next sensor, for example the second, earlier than the estimated time. This will cause the information to be entered in the second shift register and display the second point on the indicator before the work of the previous (first) shift register is completed. As a result, on the mimic diagram, the position of one transport unit is displayed simultaneously at two points, giving the impression of having two transport units, which contradicts the real situation. If the speed of the vehicle3 920792 decreases or it stops due to an accident, then the information moving along the shift register reaches the last digit and is emulated, as a result of which the image of the vehicle on the indicator disappears. In case of a forced stop of the transport unit, the possibility of establishing the place of the accident is excluded.

The purpose of the invention is improving the accuracy of control over the movement of objects.

This goal is achieved by the fact that triggers are introduced into the device, one of the inputs of each of which is connected to the output of the last digit of the shift register, the output of the trigger is connected to the first inputs of the indicator, the other input of the trigger is connected to the output of the subsequent sensor, which is connected to the reset input of the shift register , the output of each trigger is connected to one of the first inputs of the indicator.

The introduction of triggers and the described connections allows us to eliminate inconsistencies between the real situation on the route of movement of the object and the image of the situation on the indicator, which increases the efficiency of the device for monitoring the movement of objects.

The drawing shows a diagram of a device for controlling the movement of vehicles.

The device contains sensors 1, shift registers 2, electronic clock '3, time setting unit 4, indicator 5 and triggers 6.

The outputs of the sensors 1 are connected to the first inputs of the shift registers 2. The electronic clock 3 is connected via the time setting unit 4 to the second inputs of the shift registers 2. The first inputs of the indicator 5 are connected to the outputs of the shift registers 2. The second input of the indicator 5 is connected to the electronic clock 3. The first inputs flip-flops 6 are connected to the output of the last bit of shift registers 2, the outputs of flip-flops 6 are connected to the first inputs of indicator 5. The second inputs of flip-flops 6 are connected to the reset circuit of shift register 2 and the output of the subsequent sensor,

The device operates as follows.

When an object (vehicle) crosses the installation line of the first sensor 1, information is entered into register 2 and, at intervals of time specified by electronic clock 3 and time setting unit 4, information moves from one cell of shift register 2 to the next.

This movement is indicated on indicator 5 (on the mimic diagram), simulating the movement of an object. From the output of the last bit of shift register 2, the information is recorded in trigger 6. If the vehicle is moving at a lower speed than intended, the information remains in trigger 6, inducing the presence of a transport unit of 15. Similarly, in the event of an accident, the trigger remains on. 6, indicating the location of the vehicle.

At the moment when the delayed vehicle ₂₀ crosses the installation line of the second sensor 1, the signal from its output resets the first trigger 6, simultaneously enters information in the second shift register 2, and the position of the transport unit is displayed on the indicator.

In case of advancing the schedule of the volume. The project crosses the line of the second sensor 1 at the moment of movement of information along the first shift register 2.

The signal from the output of the second sensor 1 resets the first shift register 2 and eliminates the false indication of the vehicle. Corrected information on indicator 5 comes from the second register 2.

With further movement of the vehicle, the subsequent nodes of the device work similarly.

The proposed device dramatically increases the efficiency of monitoring the movement of objects, as it allows you to reliably control the movement of transport units at a speed different from the calculated one, as well as determine the site of an emergency stop of the vehicle. The absence of false indicator readings in the proposed scheme allows you to place sensors more rarely while maintaining the reliability of the indication.

Claims (1)

1. USSR author's certificate No. 533955, cl. G 08 C 5/0, 1975 (prototype).