SU639007A1 - Vehicle type identifying device - Google Patents

Description

The invention relates to vehicle detection and accounting systems and may find application in the design and creation of devices for measuring the distance between two or more modes of transport. Devices for determining the type of transport are known, containing detectors, drivers, trigger, AND elements, pulse generator, registration unit, meter p .. A drawback of the device is the low reliability of the received information about the type of vehicle. Other known devices for determining the type of transport include sensors made in the form of inductive frames, elements And, the outputs of the sensors are connected to the detector inputs, the output of the first of which is connected to the input of a binary counter, the code of the second detector is connected to the first inputs of the first element And the first trigger, pulse formers, the output of the first of which is connected to the first input of the second element I 2. In such a device, the vehicle length is also taken as the criterion for determining the type of transport and along the length of the metal mass (electrical length). However, due to the fact that the electrical length of cargo vehicles, as a rule, does not correspond to their geometric length, the accuracy of determining the mode of transport of this device is low. The purpose of the invention is to increase the reliability of determining the mode of transport. This is achieved by introducing a second trigger and an inverter into the device, the outputs of the first trigger are connected respectively to the inputs of the pulse formers, the second of which is connected to the second input of the binary counter and the first input of the second trigger, , the output of the second trigger is connected to the first input of the third power .- ,. Sara ytorii l.;, ;;, and iiOTPporo connections with the dBootic counter, the output of the third element I is connected to the inverter H B. The second input INP B1. OpOiD EPBMenta

And the outputs of the YG:.,., And s of the first impulse generator are connected to the fourth element AND, the output of the iL-n is found from the first element and from the first Tpnrrepas and the output of the second and ––;

The drawing is structural with ;;; device

It contains sensor 1, detector 2, binary counter 3, element I, 4, suieep torus 5, epeme1 (TI 6, sensor 7, detector 8, element I 9, trigger 1.0, epement And 11s trigger 12, pulse shaper 13, the imager shaper

Detector 2 is designed so that when passing through the controllable area of this detector of passenger transport, as well as a bus or trolleybus, a single impulse is formed on the top of detector 2, and the transit time through the controlled area of this detector the car at the exit of it is formed more than one pulse

Detector 8 is a detector which is present, the signal at the output of this detector does not depend on the type of transport, but is proportional to the time spent in the controlled area,

The I-inductive frames of sensors 1 and 7 are located on the S port, equal to or equal to the length of the passenger car, but less than the length of the bus or trolleybus.

The device works as follows.

When driving through a controlled inductive frame 1, for example; jjerKoV crew, and the output of detector 2 appears one HMnjxaaC. Which, with its front edge, triggers trigger 12, the output signal of trigger 1.2 goes to the formatter 13 | The initial signal of which sets the trigger 10 and the binary counter 3 to its initial state. A pulse from the output of the detector 2 (the falling edge) is recorded in the BINARY counter 3, In this case, the I signal appears in one of the inputs of the element 4. trigger 10 to the second input of the element And 4 also receives a signal 1. At 9TOM from the output of the element 4, the enabling signal goes to one of the inputs

element And 11, and through the inverter 5 prohibitory signal is fed to one of the inputs of the element And 6.

Further, when driving this passenger car through the controlled zone of the inductive frame 7, a pulse appears at the output of the detector 8, which by its falling edge puts the trigger 12 into a state where a signal is present at one of its outputs, which through the driver 14 enters The inputs of the elements 11 and 6 are repeated. Since the first input of the element 11 has a resolving signal, a signal appears at its output indicating that a passenger car has passed through the controlled area of the device. 6 and that an output signal is present, since the first input signal is present zapre.schayushy Inver torus So

When traveling through the controlled area of the device, for example, a bus, the detectors 2 and 8 also appear in one pulse at a time, but since the distance between the controlled areas of the inductive frames 1, 7 is less than the length of the bus, then at some point in time the outputs of the detectors 2 and 8 simultaneously will be present pulses. At the same time, at the output of the element AND 9, a signal appears that translates the trigger 10 into the state in which the blocking signal appears at its output at one of the inputs of the element AND 4. In this case, at the output of the element 4 signal O appears, which is fed to the input of the inverter 5 and to the input of the And 11 element.

At the back of the pulse from the detector 8, the trigger 12 is thrown and generates an enable signal through the shaper 14 to one of the inputs of the AND 11, AND 6. At the output of the AND 11 element, there is no signal, and at the output of the AND 6 signal appears, that cargo transport proceeded through the controlled zone of the device (in this case, buses are classified as cargo transport).

Claims (1)

When driving through a controlled area of the inductive frame 1, for example, freight transport, na. The output of detector 2 will be two or more pulses. The first of these pulses, with its leading edge, sets the device to its initial state. The same pulse with its falling edge is recorded in a binary counter 3. The second and subsequent pulses coming from the output of detector 2, iie change the state of trigger 12, and the falling edges are recorded in binary counter 3. At the output of counter 3, a forbidden signal is present respectively, at the output of the element And 4, a signal O appears, which is fed to one of the inputs of the element 11 and to the input of the inverter 5. From the output of the inverter 5, one of the inputs of the element And 6 receives the enabling signal. Then, when passing through the cargo transport through controlled area of the interactive frame 7, on the code of the detector 8 appears with a signal, which the falling edge triggers trigger 12, then the device operates according to the above scheme. At the output of element 6, a signal appears indicating that cargo transport has passed through the controlled area of the device. The proposed device allows to increase the reliability of determining the type of crew due to the fact that not only the length of the vehicle, but also the form of the signal from it, is inherent in each specific type is taken as the definition criterion. The formula of the Device for determining the type of transport, containing sensors, made in the form of inductive frames, the elements And Cargo outputs of the sensors are connected to the inputs of the detectors, the output of the first of which is connected to the input of the binary counter, the output of the second detector is connected to the first inputs of the first And element and the first trigger, pulse shapers, the first output of which is connected to the first pass of the second element And, o It is due to the fact that, in order to increase the reliability of determining the type of transport, a second trigger and an inverter are entered into the device, the outputs of the first trigger are connected respectively to the inputs of the pulse formers, the output The second of which is connected to the second input of the binary counter and the first output of the second trigger, the second input of which is connected to the output of the first element I, the second trigger of the second trigger is connected to the first input of the third element I, the second input of which is connected to the binary code of the binary counter, the output of the third element And connected to the input of the inverter by the second output of the second element I, the outputs of the inverter and the first pulse generator are connected respectively to the inputs of the fourth element I, the outputs of the first detector are connected to the second inputs Dami first element And the first trigger, the outputs of the second and fourth elements And are connected to the output of the device. Sources of information accepted by the OO for hygiene during examination; 1. French patent 1584556, l. Q 08 Q, 2О.О6.68. 2, USSR Author's Certificate No. 512645, cl. Q O8 Q 1 / O4 24.12.73. Jleekoitie