SU652487A1 - Accelerometer - Google Patents

Description

(54) ACCELERATION METER

The invention relates to methods for measuring mechanical parameters, in particular acceleration, and can be used in various advanced and technical areas, for example, in navigation systems for docking and tracking of objects in flight.

Devices are known that contain an inertial element, a compensation system, and a photo-optical sensor for retrieving information ij.

Such meters have a significant zero area ({) 6to optic sensor.

The closest technical means to this invention is an accelerator determination device, DG, containing a radiation source, a resonant absorber and receivers of gamma rays 2.

The disadvantage of such a device is measurement accuracy with constant acceleration, since the inertia technology is rigidly connected with the radiation source (resonant absorber).

The case of the gamma-ray receiver does not move in the case of a gamma-quantum and the number of gamma-quanta recorded by the receiver is disproportionate to the current acceleration, because with constant acceleration (and absence), the output signal in the 8TH case is the same. In addition, the device does not measure the acceleration in two planes.

The purpose of the invention is to increase the accuracy of measurement of magnitude and direction in two mutually perpendicular acceleration planes.

Claims (1)

This is comprehended by the fact that in the acceleration sensor a resonant absorber is applied to the inertial body in the form of two mutually perpendicular rings, whose longitudinal axes coincide with the acceleration correction — and the receivers are installed on opposite sides of the rings, and the resonant absorber partially overlaps their input windows, for example half. The drawing shows a circuit diagram of a pull-in acceleration sensor. Acceleration sensor contains radiation source I, collimator 2; an inertial body 3, on the surface of which a resonant absorber 4 is applied, measurement receivers 5-5-1 and 6-6-1, difference blocks T-1. The source of ialuvent 1 is circularly mounted on the acceleration sensor body, the radiation from which passes through the collimator2, its aperture Made in the form of two mutually perpevdikulny cracks, half the width of the postepnihs is equal to the diameter of the entrance windows of the receivers and the railings. Resonant weather can be applied to the inertial body by flipping in the form of two co-axles perpengically one to the other. Radiation pickups 5-5-1 and 6 6s "l are located on the acceleration sensor case and are displaced along the direction of the radii of the rings in such a way that the absorber partially overlaps, the receiver input windows are half. In this case, part of the transmission from the gamma-quanta source falls into the sensitive o6t; eM circuit, the mine resonant absorber, and the other part through it. The acceleration sensor operates as follows. If the object is not moving, then the acceleration is oTCj-rcTByeT (we consider it when acceleration is in the same plane) and, accordingly, the inertial ones are not displaced, while the number of gamma quanta registered by each receiver, set at the ring, is equal to and the difference signal is missing. When a t-root constant occurs in time, the spinning body mixes in the direction of the accelerator, and the position of the resonant absorber changes from ™. In this case, the resonant absorber overlaps, the input terminal of the receiver 5-1 is larger by the value of AH than the input window of the second receiver 5, i.e. the signal at receiver 5 decreases, and Neither receiver .5 increases in proportion to the estimated 5 percent. 65 74 The signal at the output of the difference block 7 also increases significantly. On prints 6–6–1, installed by the other ring of the other ring, an increase in the signal does not occur as the resonant absorber moves in the direction of the pulp to the line connecting the centers of the receivers. The occurrence of acceleration in the apytxifi area leads to an increased signal on the output of the receivers. Respectively on the output of the difference block. In the case that the acceleration of the object is angled to the indicated planes, the signals appear at each output. de difference blocks. The measurement range of the acceleration is determined by the parameters of the resonance pin and the stiffness of the suspension of the inertial body, ... Thus, the speed sensor improves the measurement accuracy of the acceleration in two planes without complicating the design and recording circuit, which characterizes the proposed sensor with a good technical and economic indicator mi . Claims of Invention An accelerometer measuring device, a kinematically connected inertia body with a resorption absorber kinematically associated with a scorpus, a sensitive element with a source. HSIKOM radiation, gamma-i quanta receivers installed on the body, and a measurement circuit, which is based on the fact that, in order to improve the measurement accuracy, the absorber is deposited on the surface of the inertial body in the form of two mutually perpendicular rings, the longitudinal axes of which coincide with the direction acceleration, and the receivers are installed on opposite sides of the rings, and the resonant absorber partially overlaps their input windows. Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 559193, class 01 P 15/08, 1.975. 2, USSR Copyright Certificate No. 5091.31, cl. Q 01 P 13/08, 1966.