SU1328672A1 - Transmitter of object inclination angle in two mutually perpendicular planes - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to improve accuracy. The device contains a sensitive element 1 in the form of an i-tnik, a magnet 3, a locking device 4, a tilt sensor 5, a tang oscillation amplitude meter 6, a converter into an electric signal contains self-oscillators 10-13, keys 14 , 15. The introduction of new elements and the formation of new CBHseii between the elements of the device allows it to extend the object's angle of inclination to the points of tilt reversion: 1. 2 Il.

Description

113

The invention relates to a measurement technique and can be used to measure the angles of inclination of both fixed objects and uniformly moving objects.

The aim of the invention is to improve the measurement accuracy by determining the angle of inclination of the object from the points of the reverse of the dial.

Figure 1 shows a functional electrical diagram of a tilt angle sensor (with a cut of the body of the sensitive element in one of the planes

tilt); figure 2 - diagram of the stresses ig kryva keys 14 and 15, Freed

at the output of the clock generator.

The sensor of the angle of inclination of the object in two mutually perpendicular planes contains a sensitive element (SE) 1 in the form of a tiller with a hinged cross mounting 2, which is mounted on racks whose inertial body is made of

This magnetic magnet 3, the three device 4, the sensor 5, the position of the tandem, the meter 6 amplitude of oscillations of the capacitive type, enclosed in a common case 7 with the base and the electronic circuit 8 of the control of the state of the sensitive element (SESCSE). The transducer to an electrical signal is represented by an electronic model 9 measuring the amplitude of oscillation of a tiller (SIAK) containing four oscillators 10-13 harmonic oscillations and two switches 14 and 15. SIAK 9 consists of two identical channels, the first of which is used to measure the slope in one plane, and the second in another perpendicular plane. Measuring instrument 6 amplitudes of oscillations of a capacitive-type model consists of a pair of plates, forming four variable capacitors included in the oscillator circuits of oscillators 10-13, respectively. The four plates are fixed on the tiller and electrically connected to each other and to the housing. Four other plates fixedly mounted on the walls of the housing 7, one plate on each wall. The sensor of position 5 of the tambourine is an electric sensor, and the locking device 4 is an electromagnetic lock. The inertial body of a permanent magnet 3 interacts with the sensor 5

the tandem is equipped with a lock and a locking device 4. The ESCE input is connected to the sensor of the 5 position of the tandem. One of the inputs of the ESCE system is connected to the locking device 4, and the second and third outputs are connected to the inputs of two keys of the same type 14 and 15 of the two-channel CIAK circuit.

The sensor works as follows.

When the angle of inclination of the object is equal to zero, the tambour is not deviated from the earth normal. A positive polarity impulse comes from the SCEDA circuit and disconnects the locking device 4, from power connections to the body, the master does not move as the angle of inclination is zero). The next pulse, negative polarity, restores broken links and closes keys 14 and 15. The time interval At between the positive polarity pulse and the negative polarity pulse should be chosen based on the condition ut T

T „

MS (kS

L,

0

where t

0

5 lovy

five

0

t „Period T

the period of non-damping oscillations, in an ideal oscillatory system at a deviation angle of the tiller ui s ,. (is the maximum of two angles per cell: it is in one and perpendicular to its planes; the Maximal tilt angles of the object along the planes are specified in the design);

time interval characterized by transients both in the electronic circuit of the sensor and in electromagnetic systems: master – locking device, master –– satellite position sensor, f ka;

the duration of one measurement cycle,

can be calculated by

  (i) sin2 4mgd L

/13,,,. oi (2) -sin ....

where I is the moment of inertia of the tiller relative to one of the axes of the swing (the moment of inertia of the tiller relative to the axes of the swing is the same); m is the mass of the tiger; g is the acceleration of free fall; d is the length of the tiger. Therefore, when the tilt angle of the object is equal to zero, there is no movement of the tambour, the code corresponding to the zero tilt angle is present at the output of the SIAC circuit counters. This code is determined by the quality of the SIAK circuit, since the difference frequency of 10–13 oscillators must be zero. When the angle of inclination of the object with respect to the earth's surface appears, the sensor body and the associated force force - 20 by the beginning of measurements in the next cycle

meter readings are reset. The counter contains the number of pulses N, the prop-angonal angle of the object (,, in the plane A,

zi with the case of the SE. form with the normal to the earth's surface angles equal to the angle of the object in two perpendicular planes. Tilt angles in two perpendicular planes are measured by two CIAC channels using the same type of algorithm. For simplicity, consider a measurement of the angle in one plane, for example, in plane A. With the arrival of a positive polarity pulse, key 15 is opened from the ESFCN circuit and the winding of the locking device 4 is provided. The antenna deviated from ground normal is freed from power connections It is set in motion by the force of attraction. In its movement, the satellite passes the equilibrium position (the angle with the normal is zero) and deviates in the opposite direction (under the condition of low resistance to movement) by an angle equal to the angle of the initial deviation from the earth normal, equal to the angle of the object. Depending on the amplitude of the oscillation of the model, the relative change in the capacitance of the meter 6 is different for the amplitude of the oscillations of the model. Differential frequency f. Oscillators 12 and 13, the greater, the greater the angle of the object. Through the public key 15 pulses with a frequency fp arrive at the counter. At the end of the first period of oscillation of the model, the sensor 5 of the position of the model extends the signal to the ESETA circuit, which compares this signal with a threshold value and, if the threshold is exceeded, causes the signal to be from 25

- V V LL30

showing price

C - scale factor

hail

,

division of one pulse. The graph (Fig. 2) shows the change in the value of the current angle of the SE deviation from the earth normal in the Ac plane -: t. of time. In this case, the following conditions are met: s .: t, g const, i.e. angle of inclination in plane A remains

tilt about

at

40

45

constant; plane A

(or equal to) the maximum angle of inclination in the perpendicular plane.

It is seen that TC C + C-, where ti, is the duration of the initial measurements; G, the duration of the interval of the function of the sensing element with the housing, and is determined by the period of following positive impulses from the JETC scheme. For interval C, the condition

 -C -

It is known that the period of oscillation of the tiller weakly depends on the amplitude of the deviation of the tibe oi. Specifically, when the angle a /, changes from O to 15 °, the change in the value of the oscillation period 55 does not exceed 0.5%,

Formoocha invention

The sensor of the angle of inclination of the object in two mutually perpendicular plane50

the lock of the locking device is at the same time closing the key 15. At the same time, the signal from the HSESE circuit analyzes the signal from the tandem position sensor 5 not only in magnitude but also in sign. This is necessary in order to distinguish the moment of the start of the movement of the instrument (when the winding of the sensor of the position of the instrument also receives a signal) and the moment of the end of the first oscillation period, when it is necessary to restore the broken force connections of the SC with the body.

When the locking device 4 is opened, power is applied to its winding and the master is fixed. At the same time, the flow of pulses through the switch 15 into the counter is stopped. WITH

25

- V V

showing price

C - scale factor

hail

,

division of one pulse. The graph (Fig. 2) shows the change in the value of the current angle of the SE deviation from the earth normal in the Ac plane -: t. of time. In this case, the following conditions are met: s .: t, g const, i.e. angle of inclination in plane A remains

tilt about

at

0

five

constant; plane A

(or equal to) the maximum angle of inclination in the perpendicular plane.

It is seen that TC C + C-, where ti, is the duration of the initial measurements; G, the duration of the interval of the function of the sensing element with the housing, and is determined by the period of following positive impulses from the JETC scheme. For interval C, the condition

 -C -

It is known that the period of oscillation of the tiller weakly depends on the amplitude of the deviation of the tibe oi. Specifically, when the angle a /, from 0 to 15 ° changes, the change in the value of the oscillation period 5 does not exceed 0.5%,

Formoocha invention

The sensor of the angle of inclination of the object in two mutually perpendicular plan0

bone, containing a base with support posts, a sensitive Element in the form of a tandem freely suspended from a hinged cross, transducer of movement into an electrical signal, characterized in that - With the aim of increasing the measurement accuracy by determining the tilt angle of the tambour , a locking device, a position sensor, an electronic circuit for controlling the state of the sensitive element, the first, second, third and fourth meters of the capacitive type, introduced

facing plates located on the mat and on the side walls of the core, with the input of the control circuit of the state of the sensing element connected to the position sensor, one of the outputs connected to the locking device, and the second and third outputs connected to the two of the same type: the transducer keys were moved 1 into an electrical signal, made in the form of a two-channel scheme for measuring the amplitude of the oscillations of the pilot, the inputs of each of the channels are connected to the corresponding capacitance-type meters.

About those. L (. InkL

Position, rabbio and

o (nak

And you

pi

(rig .- /

Editor O. Yurkovetska

Compiler: And, Vlasov Tehred L, Serj Juva

Order 3475/44 Circulation 6/6 Subscription

VNRSHPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, st. Design,

Proofreader G. Reshetnik

Claims (1)

Claim Object angle sensor in two mutually perpendicular planes5 1328672 6 bones, containing a base with support legs, a sensitive element in the form of a pendulum freely suspended on a hinged crosspiece, a transducer of movement into an electric signal, characterized in that, 'in order to increase the accuracy of measurements by determining the angle of inclination from the points of reversion the pendulum, a K lock device, a pendulum position sensor, an electronic circuit for controlling the state of the sensitive element, the first, second, third and fourth capacitive meters, which are Adki located on the pendulum and on the side walls of the housing, and the input of the state control circuit of the sensitive element is connected to the position sensor of the pendulum, one of the outputs is connected to the locking device, and the second and third outputs are connected to the inputs of two same keys of the transducer to move into an electrical signal, made in the form of a two-channel circuit for measuring the amplitude of oscillations of the pendulum, the inputs of each channel are connected to the corresponding capacitive type meters. drex.Λ! G.S. Position _{r of} raceson and A Uout. GTI J. <,