RU2064200C1 - Detector which checks idle state of object - Google Patents

Abstract

FIELD: instruments. SUBSTANCE: when object changes its position, member 2 which is shaped as rotation body, for example, ball, moves with respect to housing 1. This motion is detected by measuring electric characteristics on areas of resistance connection of member 2 to electric current conducting covers of plane pairs a and b. EFFECT: increased functional capabilities. 3 dwg

Description

 The invention relates to the field of elements of control and measuring systems for various functional purposes, responding to mechanical deviations from the rest state of the controlled object and converting the latter into parameters of the form needed for subsequent use. It can be used in alarm systems installed, for example, in apartments, on vehicles, etc.

 Known devices as. N 435453 BI 7, 1974, N 1390088, BI15, 1988, which contains a housing with a fixed non-free body made in the form of a double-walled pendulum, and an electromagnetic coil in which the EMF variable is induced by the movement of the non-free body when the object deviates from the rest state, perceived by the system registration. Sensors have a number of disadvantages, of which the most significant are: the relative complexity of the implementation; the need to use scarce materials; exposure to external electric, magnetic and radiation fields, climatic and mechanical influences; dependence on the natural aging of materials; constant adjustment during operation.

 For a comparative analysis of the invention with the prototype, the sensor described in A.S. N 1689158, BI41, 1991. The device comprises a housing attached to the test object or its component and made in the form of a hinged suspension of soft magnetic material, inside which four conductors are installed, an electrically conductive non-free body (ENT) and an ENT fixation electromagnet, the ENT itself is made in the form of a ball or a mercury drop with the possibility of shorting the conductors-electrodes, if the latter is violated, an effect on the registration system is created.

 The disadvantages of this device are: the use of expensive materials and technologies; the complexity of miniaturization; low reliability due to possible evaporation of mercury and loss of contact of the ENT with the four conductive electrodes.

 The invention solves the technical problem of ensuring miniaturization of the structure while increasing reliability and noise immunity with a minimum cost.

 In the proposed device, comprising a housing fixed to the test object or its component, inside of which are insulated conductors connected to external contacts, and an electrically conductive non-free rolling body with the possibility of shorting the conductors is placed, the housing is made of dielectric material organized on it of the inner part by pairs of surfaces, at one or more levels, made with the possibility of natural permanent closure by an electrically conductive non-free body, about them more conductors and the conductors are in the form of patterned coatings of electrically conductive material of said surfaces, wherein the electrically conductive coating, one or both, in each level formed magnetized.

 The invention is illustrated in figures 1, 2 and 3, where figure 1 shows the design of the sensor with one ENT in the form of a ball and one level of surfaces with electrically conductive coatings; Figures 2 and 3 show equivalent usage patterns.

The following structural elements and designations are marked on the presented figures: 1 building; 2 ENT in the form of a ball; "c", "g" external contacts; "a" and "b" a pair of surfaces with an electrically conductive coating; OX, OY, 0Z axis of possible displacements; R _W - resistance of the ENT ball 2; R _a and R _b transition resistance in the areas of contact of the ENT with the electrically conductive coating of a pair of surfaces "a" and "b" (the intrinsic resistance of the coatings is conditionally neglected); R _ballast ballast resistance; With capacity.

 The housing 1 is made of a dielectric, for example, collapsible with a threaded connection of the parts and mounted on the object or its component part. On the inner part of the housing 1, a pair of electrically non-connected surfaces “a” and “b” is made with an electrically conductive coating deposited, for example, by galvanic deposition. The cross-sectional profile of the housing 1 provides a natural constant electrical contact of the ENT in the form of a ball under the action of its component weight with an electrically conductive coating of both surfaces of the pairs “a” and “b”. Electrically conductive coatings on the surfaces of pairs “a” and “b” may have technologically defined roughness or relief, in addition, to connect to the registration system, they are electrically connected to external contacts “c” and “g” made on the outer surface of the housing 1. Constant electrical the closure of an ENT in the form of a ball 2 of electrically conductive coatings of both surfaces of a pair “a” and “b” can be achieved not only due to the component weight of the ball 2, but also by magnetizing one or both of the electrically conductive coatings of a pair of surfaces.

The device operates as follows, FIGS. 2 and 3. In the resting state of an ENT object in the form of a ball 2 in contact areas with electrically conductive coatings, a pair of surfaces “a” and “b” has constant transition resistance R _a and R _b. The registration system is connected to external contacts "c" and "g". For any deviation from the rest state of the object, the housing 1, being fixed on it, will move together with the object due to the inertia and natural instability of the ENT in the form of a ball 2 will receive movement relative to the housing 1, while in the contact areas with the electrically conductive coatings of the pair of surfaces "a" and "b" due to their roughness or acquired relief, and also because of changes in pressure forces the motion ZPE as a ball 2 transitional resistance r _a and r _b will be variable when r constu circuit "at-g" occurs dynamic current with cases hydrochloric frequency and amplitude [M.I.Vitenberg. Calculation of electrical relays. Ed. 4th, rev. and add. L. Energy, 1975, p. 336.338 The presence of the capacitance "C" provides the response of the registration system only to the alternating component of current and voltage in the section "VG" with registration of the fact of deviation of the object from the rest state. The described operation of the device can begin with any random initial position of the ENT in the form of a ball 2. For reliability, you can increase the number of ENTs, the number of levels of pairs of surfaces "a" and "b".

 The present invention is most effective in alarm systems for various purposes. In the absence of complex parametric circuits [D.I. Ageikin. Sensors of control and regulation. M. Engineering, 1965, 928 c. it successfully performs several security functions simultaneously, cheaply and technologically, miniaturization is possible. The invention was implemented by the authors and tested in specific security systems, the results are positive. YYY2

Claims (1)

 The sensor for monitoring the state of rest of the object, comprising a housing fixed to the monitoring object or its component, inside of which are insulated conductors connected to external contacts, and an electrically conductive non-free rolling body with the possibility of shorting the conductors is installed, characterized in that the housing is made pairs of surfaces are made of a dielectric material on its inner part at one or more levels, the conductors are made in the form of relief coatings from an electrically conductive material ala said surfaces, wherein the electrically conductive coating, one or both, in each level formed magnetized.

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