SU609953A1 - Indicator - Google Patents

Description

one

The invention relates to the field of instrumentation and can be used for the indication of measured parameters with obtaining feedback, as well as in systems of automatic regulation and control. five

A feedback device is known, comprising a generator, a signal sensor, a semi-proprietary structural element with a variable resistance, and a signal amplifier 11 U

The disadvantage of the device is that their electronic sensors have large dimensions and cannot be used as feedback elements in indicating switch instruments.

A device with an electrical feedback is known, which includes an actuator connected mechanically to a working body and a permanent magnet fixed on it, connected by a magnetic link 20 to a sensitive element connected in turn by an electric link with control body 2.

Also known indicator device that is closest to the proposed 25

device in its technical essence and the achieved result and comprising a case with a dial, an actuator, kinematically connected with an arrow, on which a working element is attached, which interacts with a sensitive element connected by an electrical connection with control body H.

The known devices have a low accuracy of indication, since they do not provide feedback coverage of the position of the hand across the entire dial field, and, in addition, a narrow range of application.

The aim of the invention is to improve the accuracy of the display due to the feedback coverage of the position of the indicator instrument, and to expand its functionality.

Claims (2)

This goal is achieved by the fact that in the proposed device the working element is made in the form of a permanent magnet, and the sensitive element - in the form of permanent magayits in contact with the conductors that form the orthogonical grid across the entire field of the dial, and installed at the intersection of the conductors some conductors MaiHHTbi are contacted directly, and with others, arranged perpendicularly to the first, through a ferromagnetic powder. The drawing shows the proposed indicator device. It consists of the case 1, the dial 2 and the working body, made in the form of an arrow 3. The arrow 3 is fixed on the axis 4, which is connected to the executive mechanism (not shown). On arrow 3 there is a permanent magnet 5 connected by magnetic coupling with a sensitive element made in the form of a microminiature permanent magnet 6. The front part of the device consists of several glasses 7-9. A magnet 6 is fixed in the opening 1O of the glass 8, and the electric grooves 11 and 12, B, of the glass grooves 7 and 9, which form an orthogonal grid and are made with a diameter not exceeding the angle of sharpness of sight. The magnets 6 are installed at the intersection points of the conductors 11 and 12 and are connected by one end directly with the conductor 11, and the other (end S) via ferromagnetic powder 13 with the conductor 12, forming contact between the conductors 11 and 12. The magnet 5 ends with the end face N of the magnet 6, The conductors 11 and 12 are connected to the control (not shown). When the gunner 3 rotates with the axis 4 magnet 5, the contact between the conductors 11 and 12 at the points of their intersection alternately closes, thus giving the control body its true position relative to the scale of the instrument. At this time, at other points of the intersection of the conductors 11 and 12, the contact is open, since the magnet 5 does not interact with the magnet 6 at these points and the powder 13 under the action of the attractive force of the magnet 6 is drawn to the end face S The conductors 11 and 12 can be are made, for fimer, from silver alloy without a diameter of not more than 0.02 mm according to GOST 7222-54, which is i (less than the angle of sharpness of sight (the nominal value of which is AOR). At distance of ZO cm, such a conductor does not distinguish, either takes it with difficulty. The opening 1O and the diameters of the magnets 6 can be in They are filled with $ 0.1 mm, which does not make it difficult to read the readings of the instrument. The conductors 11 and 12, respectively, in two mutually parallel planes can be 1.5–2 mm apart from each other, which is 75-1OO times as long as their diameters. The calculation of magnets 5 and 6 is made according to the formula F Ag-, where F is the force of interaction into the system, B g- in air is H and expresses the intensity of the magnetic field, e; Ag is the cross-sectional area, cm, Thus, the use of systems of magnets and conductors that form an orthogonal grid, allows you to cover with the whole circuit path from the sensor to the indicating element is an arrow, which ensures high accuracy of the display of the recorded information. In addition, taking into account the small size of the sensitive element, the proposed device can be used in automatic control devices. The invention of the indicator device, comprising a case with a dial, an actuator, kinematically connected to an arrow, on which is attached a working element that interacts with a sensitive element connected by electrical communication with a control element, characterized in that, in order to improve the accuracy of indication and expansion of functional capabilities of the device, in it the working element is made in the form of a permanent magnet, and the sensitive element is in the form of permanent magnets in contact with conductors, binder orthogonal grid field around the dial, and installed at the intersection of conductors, wherein one conductor with the magnets directly contact, and on the other, arranged perpendicularly pervymJ- through the ferromagnetic powder. Sources of information taken into account in the examination: 1.Pater1t of France No. 2.175.794, cl. G- 05 V 6 / O2, 1973. 2. Japanese Patent No. 47-34О80, cl. 54 (7) C141,. 2. USSR author's certificate JA 95867. cl. G O1 D5 / 2O, 1951. /  XL X / f "IQ 1 Hr / -X ls 2 Iz / Us