Device for measuring radius curve track

 

(57) Abstract:

Use: mobile measuring laboratory of rail transport and it systems management. The inventive device includes sequentially connected to the reference voltage generator, the sensor curvature of the path is made in the form of accelerometer myCitadel and the Registrar, and the speed gauge, the angular rate sensor and the integrator. The technical result is the measurement of the radius curve track with great performance. 1 Il.

The invention relates to a device for the measurement of the radius of the curve of the turn track in the plan and can be used in a mobile instrumentation laboratories railway and other transport and its control systems.

Known devices that implement the method of determining the radius of the curve of the track containing the speed gauge and the sensor curvature of the path is made in the form of accelerometers, mounted on the measuring carriage (ed.mon, USSR N 1049605, 1983).

Known devices have sufficient accuracy and reliability of determining the radius of the curve and low performance control as idolatrously the accuracy and reliability of control due to the fact, when a variable radius curve track, and it almost always takes place, it is not possible to combine sensor readings curvature of the path and the speed gauge in the same points of the discrete track sections when the first and second displacement measuring truck at different speeds, and therefore, to eliminate the influence on the measurement result of the gravitational acceleration component acting vertically in the cross section of the track when tilting or rocking of the truck in the plane of this section. A constant need for strict binding to the terrain and the need to apply a lowpass filter, which also introduces additional error. Therefore, the known devices are not widely used in the technique.

The closest technical solution to the present invention is a device for measuring radius curve track containing the reference voltage generator, two sensors of curvature of the path, mounted on front and rear trucks of the car, myCitadel and the Registrar (ed.mon. USSR N 632605, 1978).

The accuracy and reliability of control of this device is satisfactory only when the magnitude of the radius of the curve of the turning path postocialist relatively wagon asynchronously and at a different angle due to the significant distance between the trucks, consequently, the interference of both sensors will be different not only in size, but sometimes in sign, with the removal of which will not yet be full compensation for interference (including the gravitational component of the total acceleration), and in the worst case it will have doubled in different marks.

The invention consists in that the device containing connected in series generator reference voltage, the sensor curvature of the path is made in the form of an accelerometer, myCitadel and the Registrar, and the speed gauge, introduced the angular rate sensor and the integrator, and the output of the angular rate sensor is connected through an integrator with a second input of myCitadel, and the output of the speedometer is connected to another input of the Registrar.

The technical result of the proposed technical solution is ensuring the safety of rail traffic on the curved sections of the path at the expense of accurate and reliable information about the curve radius of rotation of the path obtained by equipping the device with new units, allowing first measure the gravitational component of acceleration and full acceleration (the sum of the tangential and gravitational components), and then subtract led the second circuit device.

The device has placed in the interior of the car-potenzmittel generator 1 of the reference voltage, the sensor 2 of the curvature of the path is made in the form of an accelerometer, sensor 3 angular velocity, the integrator 4, myCitadel 5, the Registrar 6 and the speed gauge 7. The sensor 2 of the curvature of the path, to the input of which is connected to the generator 1 of the reference voltage, is connected to the first input of vicites 5, and the sensor 3 angular velocity connected through the integrator 4 to the second input of vicites 5, and the output vicites 5 is connected to one of the inputs of the recorder 6, and the speed gauge 7 with the other input of the Registrar 6.

The sensor 2 of the curvature of the path is designed to measure the full acceleration (the sum of the tangential and gravitational components) arising from moving on the rails of the car on curved sections of track and convert acceleration into an electrical voltage. The sensor 2 is assembled based on the accelerometer and operates on the principle of generating an electrical signal when subjected to the acceleration sensor 2. In the General case, the accelerometer has an axis of sensitivity, however, his testimony is affected and lateral acceleration, directed perpendicular to the axis of sensitivity.

Sensor 3 angular velocity is DL the treatment of railway track.

The integrator 4 is designed to convert the angular velocity measured by the sensor 3, the angular displacement in the form of an electrical voltage, similar to the form of the voltage generated by the sensor 2, which allows a subtraction operation and processing of signals from sensors 2 and 3.

Registrar 6 represents, for example, the computer type IBM monitor (Fig. 8 not shown) and is designed to calculate the radius of the curve of the track and video of the measurement result on the screen.

The speed gauge 7 is made, for example, in the form of a Tacho-generator connected directly or through a mechanical gearbox with the axis of the pair of wheels of the car and depending on the speed of rotation of the wheel produces an electrical voltage proportional to the translational speed of the wheel.

The technical result of the invention is the securing of the rail traffic on curved sections of track, which is achieved by a set of typed elements and their electrical connections, allowing to improve the accuracy and reliability of measurement of the radius of the curve of the turning path.

Sensors 2 and 3, the CA is. perpendicular plane running vertically along the rail track.

When the movement of the carriage along the straight section of path on the sensor 2 will not be affected by any external forces, so its output will be a voltage level of the frequency produced by the generator 1.

When the movement of the carriage along a curved section of track on the sensor 2 will influence the forces directed along the radius of the curve path and vertically in the plane of the cross section of the path if the car is subject to tilting or rocking in this plane, regardless of whether straight or curve of the investigated part of the way. In this regard, the output of the sensor 2 will be the signal voltage in analog form, is proportional to the tangential component of the acceleration atV2/R and the gravitational acceleration component ag= gsin,, i.e.

< / BR>
where a full acceleration acting on the car when it is moving on a curved track sections;

V the speed of movement of the carriage;

R radius curve track;

g the acceleration of free fall;

the angle of rotation of the carriage in the plane of the cross-section of the path.

When tilting or rocking of the moving car in a PLoS is tcheka 3 will change from its initial value, corresponding to the zero value of the slope is proportional to the magnitude of the angle a.

At the output of the integrator 4, associated with the output of the sensor 3 will be allocated to the signal voltage in analog form is proportional to the gravitational acceleration component ag< / BR>
U2~ ag= gsin.

In myCitadel 5 voltage U1and U2deducted, and at its output the resulting voltage U3that depends only on the magnitude of the tangential component of acceleration at< / BR>
< / BR>
The signals from the outputs of vicites 5 and speedometer 7 are fed to the inputs of the recorder 6, in which the calculation of the values of R from the expression (1). The sign of the polarity values of R judge right or left turn of the way.

The technical result of the proposed solutions is to ensure the safety of rail traffic on the curved track sections, owing to the measurement radius curve track with high speed, accuracy and reliability by separating the tangential component of the acceleration from full acceleration with the subsequent calculation of the current value of the radius of the curve of the turning path.

Device for measuring radius of krigene, the sensor curvature of the path is made in the form of an accelerometer, myCitadel, the Registrar and the speed gauge, characterized in that it introduced the angular rate sensor and the integrator, and the output of the sensor of angular velocity through the integrator associated with the respective input of myCitadel, and the output of the speedometer is connected to another input of the Registrar.

 

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5 dwg

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