SU767516A1 - Device for determining object inclination angle - Google Patents

Description

(54) DEVICE FOR DETERMINING THE ANGLE OF THE Oshzekt

The invention relates to the field of instrumentation and can be used to determine the angle of deviation of an object from the plane of the horizon.

A tiltmeter is known, which contains a float chamber connected to a tank, which is connected to a housing by means of a flat spring, and an oTCj device that consists of an arrow on the tank and a scale on housing 1. . .

The disadvantages of this device include insufficient resolution, visual removal of measurement results, the dependence of the readings on temperature.

A device for determining the angle of inclination, containing an ampoule suspended in a housing on a torsion spring, filled with a liquid with an air bubble, the frame of which is connected to an electromagnetic system, and a differential capacitor electrically connected to an electronic control device, is known.

When the body is tilted, the bubble moves, causing

capacitor capacitance change that is converted by an electronic device into a voltage applied to an electromagnetic system

and measuring device. The electromagnetic system returns the ampoule to its original position, and the moment it develops is balanced by the elastic 10 moment of the torsion spring. The magnitude of the voltage applied to the electromagnetic system is judged by the angle of inclination.

The disadvantages of such a device should be attributed to the following;

15

low operational reliability, since inertia forces act on the torsion; caused by the mass of the ampoule and the overload resulting in a change in its stiffness;

20

lack of accuracy and resolution due to the presence of hysteresis torsion spring. The resolution of the output device is limited by the size of the bubble, the dielectric constant of the electrolyte, and the distance between the plates. The accuracy is influenced by the aging phenomenon of torsion 20; The measurement range of yrrioiaorpaHH is the magnitude of the relative displacement of the rotor relative to the stator of the electromagnetic lead system. Also known Na1slbn6myry, “ma; tonic masses of which are made in the form of a reservoir, partially filled with liquid p. The closest to the invention according to the technical essence and the achieved result is HaKJrbHOMep, made according to the scheme of the integrating axle meter 4. The device contains a movable floating melting chamber (float), the center of mass of which is offset relative to the axis of rotation. A float with 1Y5 pins is suspended in the housing. The space between the float and the casing is filled with a liquid whose density is chosen equal to the average density T1 ' An angle sensor that converts the angular movement of the float to an electrical voltage and a torque sensor that is used as an actuator of the feedback circuit are located on the float. The magnitude of the capacitance of the sensor (the montage sensor is a measure of the angular deviation of the float. To maintain the temperature of the liquid and the float, automatic thermostating is provided. To compensate for the spreading of the supporting liquid. a bellows is provided The device operates as follows: When the body is tilted at an angle about relative to the axis of the Float Suspension, the float is rotated together with the bollard due to the viscous friction of the float and to (start But a liquid. At the same time, there is a torque M, Ytremyushchy, to return the float to the Former Taxation (lower saturation), the value of which is defined by the expression .- -. - - - - f. m is the reduced mass, 1 is the distance from the axis of rotation to the center of the reduced mass. Under the action of m 5ment M, the float turns relative to the axis of suspension in the direction of decreasing angle Ы, while the signal winding of the sensor arises, the signal is picked up by the amplifier connection and is applied to the torque sensor. The torque sensor returns the float to a position in which there is no relative misalignment between the stator and the rotor of the angle sensor (zero position), while the torque sensor develops a moment in modulus equal to the moment M, but. The direction of the detection of the moment M. The magnitude of the angle of deviation from the plane of the Toris is estimated by the current value of the torque sensor.

: -: j 5te iC “trvi% - j-Ni iSij“ The disadvantages of such a device are insufficient accuracy. The aim of the invention is to improve the accuracy of the device. This is achieved by the fact that the float chamber is made multisectional with partial filling of each section of a heavy liquid (1 g / cm). The thickness of the liquid layer is selected from the condition of ensuring linearity in the desired range of angle measurements, and the thickness of the layer should be The measurement range was complete the bottom surface of each of the sections of the float chamber. The drawing shows the functional diagram of the device. The device contains a float chamber 1, the internal cavity of which consists of p hermetic sections 2, each section is partially filled with heavy liquid 3. Float chamber 1 with pins 4 is suspended in stone supports 5 of case 6. The space between the float and the case is filled with liquid 7, which provides hydrostatic unloading of the supports 5 and creates together with the inner surface of the housing 6 and the outer surface of the float 1 damping moment. Body The devices are thermostatic by system 8. The angle sensor 9 and the torque sensor 10 are rigidly fixed on the case. The signal windings of the angle sensor 9 are connected in series in order to compensate for the rhodial displacements of the float. The device contains a bellows 11. The device works as follows. When the body 6 is inclined at an angle of 0 relative to the horizon plane, the float 1 is also inclined by ANGLE oi (there is no relative movement of the float and the body due to friction between the float and the body and the liquid). In this case, under the action of gravitational forces, the liquid 3 of the sections 2 moves in the direction of inclination of the float until its surface becomes parallel to the plane of the horizon. When this fluid creates a torque relative to the axis of suspension of the float. The magnitude of the moment M for each of the sections 2, having the form of a rectangular parallelepiped with dimensions 1-length, b-width, h-height, is determined by the formula m4-Т - bg -2ST "(g / cm), where 5 (- fluid density 3 (g / cm) Under the action of the moment M, the float 1 deviates relative to the housing 6 the side of the increase in the angle d., when, the voltage is removed from the angle arc 9. This voltage is amplified with the electronic control unit

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Claim