RU152544U1 - DEVICE FOR DETERMINING A VEHICLE SPEED OF A VEHICLE - Google Patents

Abstract

The utility model relates to the field of measuring technology and is intended to determine the speed of a vehicle with its simultaneous identification using radio waves. The technical result is the expansion of functionality, which consists in the possibility of transmitting data received by the control unit to a central server. The technical result is achieved by the fact that in the vehicle speed determination device configured to remotely determine the vehicle speed and identify it using a radio signal of the identification node mounted on the vehicle and containing a transmitter that generates an incident electromagnetic signal, a receiver that receives the response radio signal of the identification node, the unit for determining the speed of the vehicle, made with the ability to determine the vehicle speed by the Doppler effect, a vehicle identification unit and a control unit, the transmitter and receiver being connected to vehicle speed determination and identification units that are connected to the control unit according to the present utility model, the control unit is configured to transmit data to a central server. 3 ill.

Description

The utility model relates to the field of measuring technology and is intended to determine the speed of a vehicle with its simultaneous identification using radio waves.

The prototype is a device for determining the vehicle speed according to patent RU No. 2422909, IPC G08G 1/017, 06/27/2011, including a measuring unit comprising a transmitter, an antenna oriented along the vehicle, a receiver with a Doppler frequency offset measuring unit, a decoding unit, performing the function of a control unit connected to the output of the receiver of the measuring unit, as well as a response signal unit mounted on the vehicle, comprising an antenna and means for encoding the response signal I drove.

The disadvantage of the prototype is its limited functionality, due to the lack of the ability to transmit the received data about the speed and vehicle identification parameters to the central server.

The objective of the utility model is to develop a device for determining the speed of a vehicle in which there is no specified disadvantage of the prototype.

The technical result is the expansion of functionality, which consists in the possibility of transmitting data received by the control unit to a central server.

The technical result is achieved by the fact that in the vehicle speed determination device configured to remotely determine the vehicle speed and identify it using a radio signal of the identification node mounted on the vehicle and containing a transmitter that generates an incident electromagnetic signal, a receiver that receives the response radio signal of the identification node, the unit for determining the speed of the vehicle, made with the ability to determine the vehicle speed by the Doppler effect, a vehicle identification unit and a control unit, the transmitter and receiver being connected to vehicle speed determination and identification units that are connected to the control unit according to the present utility model, the control unit is configured to transmit data to a central server.

The essence of the utility model is illustrated using the drawings, where in FIG. 1 shows the principle of determining the speed of a vehicle; FIG. 2 shows an example of a structural diagram of the proposed device for determining the speed of a vehicle, and in FIG. 3 shows an example block diagram of an identification unit mounted on a vehicle.

The following notation is made in the drawings:

1 - a vehicle (for example, a car) moving along the road with a speed of V;

2 - device for determining the speed of the vehicle 1;

3 - incident electromagnetic signal from the device 2 for determining the speed of the vehicle;

4 - identification node mounted on the vehicle 1;

5 - response radio signal of the identification unit 4 (passive or active RFID tag from which the main response radio signal to the vehicle speed determination device 2 comes);

6 - transmitter forming the incident electromagnetic signal 3;

7 - a receiver that receives a response radio signal 5;

8 - unit for determining the speed V of the vehicle 1;

9 - unit identification (determine the number) of the vehicle 1 by the received encoded response radio signal 5 from the identification unit 4;

10 - control unit; configured to transmit data to a central server;

11 - receiver node 4 identification, which receives the incident electromagnetic signal 3;

12 is an encoding device of the identification node 4, which encodes data on the vehicle 1 into a response radio signal 5;

13 - transmitter node 4 identification, which generates a response radio signal 5.

The system for determining the speed V of the vehicle 1 includes a device 2 for determining the vehicle speed on which the identification unit 4 is mounted, the device 2 being configured to remotely determine the vehicle speed and identify it using the response radio signal 5 of the identification unit 4 .

The identification unit 4 contains a series-connected receiver AND, which receives the incident electromagnetic signal 3, an encoder 12, which encodes the data of the vehicle 1 into a response radio signal and a transmitter 13, which generates a response radio signal 5. The encoder 12 of the identification unit 4 is configured to generate response radio signal 5 with a frequency equal to the frequency of the received incident electromagnetic signal 3.

The vehicle speed determination device 2 comprises a transmitter 6 generating an incident electromagnetic signal 3, a receiver 7 that receives a response signal 5 of the identification unit 4, a vehicle speed determination unit 8, configured to determine a vehicle speed by the Doppler effect, unit 9 vehicle identification and control unit 10, and the transmitter 6 and receiver 7 are connected to blocks 8 and 9, respectively, of determining the speed identifying the vehicle which are connected to the control unit 10.

The difference of the proposed device for determining the vehicle speed is that the control unit 10 is configured to transmit data to a central server.

The device for determining the speed V of the vehicle is as follows.

The vehicle 1 (Fig. 1), moving at a speed of V, is equipped with an identification unit 4.

The determination of the speed V of the vehicle 1 is the detection of the vehicle by the device 2 for determining the speed V of the vehicle, remotely, by the presence of response signals 5 of the identification unit 4 installed on the vehicle 1, subsequent identification of the vehicle 1 by means of the response radio signal 5 of the unit 4 identification.

In this case, the response radio signals 5 of the identification unit 4 are also used to determine the speed V of the vehicle 1 by the frequency shift of the response radio signal 5 of the identification unit 4, relative to the frequency of the incident electromagnetic signal 3 generated by the vehicle speed determination device 2.

The device 2 for determining the speed V of the vehicle 1 with its transmitter 6 (Fig. 2) generates an incident electromagnetic signal 3, which is received by the receiver 11 (Fig. 3) of the identification unit 4. Based on the received incident electromagnetic signal 3, the encoder 12 of the identification unit 4 generates a response signal that contains encoded data about the vehicle 1 (vehicle number, etc.). The transmitter 13 of the identification unit 4 from the signal of the encoder 12 generates a response radio signal 4, which is received by the receiver 7 of the vehicle speed determination device 2 of the vehicle 1. By comparing the signals of the transmitter 6 and the receiver 1, block 8 determines the speed V of the vehicle 1. Block 9 identifies (determines number) of the vehicle 1, decoding the received response radio signal 5. The encoder 12 of the identification unit 4 generates a response radio signal 5 with a frequency equal to the frequency of the received incident electric Signal 3.

Block 8 determines the speed V of the vehicle 1 by the Doppler effect. When measuring the speed V of the vehicle 1 by the Doppler effect, the vehicle speed determination device 2 determines the frequency Fo of the incident electromagnetic signal 3 and F1 of the response radio signal 5, and the difference dF = (Fl-Fo) between these frequencies depends on the speed V Vehicle 1:

dF = Fo * [(C + V) / (C-V) - 1], where C is the speed of light.

From the measured value dF, block 8 determines the speed V of the vehicle 1.

Block 10 controls the device 2, displays the received data on the speed and number of the vehicle 1, transfers the received data to a central server (not shown conventionally in the drawing), thereby expanding the functionality of the device for determining the vehicle speed.

Claims (1)

A vehicle speed determination device configured to remotely determine a vehicle speed and identify it using a response radio signal of an identification unit mounted on a vehicle, and comprising a transmitter generating an incident electromagnetic signal, a receiver that receives a response radio signal of an identification unit, a unit determining the speed of the vehicle, configured to determine the speed t vehicle according to the Doppler effect, a vehicle identification unit and a control unit, the transmitter and receiver are connected to the vehicle speed determination and vehicle identification units, which are connected to the control unit, characterized in that the control unit is configured to transmit data to a central server.

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