SU853367A1 - Rheostat linear lisplacement transducer - Google Patents

Description

(54) RESTAURANT LINEAR DISPLACEMENT CONVERTER

The invention relates to instrumentation technology and can be used to measure large linear displacements.

Rheostatic transducers of linear displacements are known, containing a reichord, having a length corresponding to the expected displacement, and a sliding contact associated with a moving object p. J.

The disadvantage of such converters is their considerable size.

The closest technical solution to the invention is a linear linear displacement transducer, comprising a housing, a resistive element fixed in the housing, a current-collecting contact sliding along the resistive element, and a current-supplying contact connected to one of the ends of the resistive element 2.

The resistive element of the converter is made in the form of a flexible wire wound on a coil. The free end of the wire is strengthened during the measurement at the monitored object, and the output value is the electrical resistance of the wire in the area between

controlled object and the contact installed at the outlet of the wire from the housing. The disadvantage of the sensor is the need to attach the free end of the wire to the moving object and use an additional conductor from the moving object to turn the wire into the electrical measuring circuit, which

10 reduces reliability.

The purpose of the invention is to increase reliability.

This is achieved by the fact that the transducer housing is made of spring-bound telescopic sections, on the inner surfaces of the telescopic sections, besides the first one, connected to the object being monitored during measurements

20 there are sections of the resistive element, and at the ends of the resistive sections, except for the last one, there are additional contacts identical to the current-collecting contact, each

25 of which are intended to slide on the adjacent portion of the resistive element. At the same time, on the outer surface of the telescopic sections there are placed conductive contacts connected to the main current-collecting contact.

elements electrically connected to each other through tension springs. FIG. 1 and 2 show the constructive and electrical circuits of the converter.

; The converter comprises a housing made of telescopic sections 1, 2, and 3, on the inner surfaces of which, besides the first section 1, are placed sections 4 and 5 of the resistive element. Telescopic sections 1, 2 and 3 are connected by springs b and 1 of tension. At the ends of the sections of the resistive element, except for the last, go (in FIGS. 1.2 - at the end of section 4: additional current collector contacts identical to the main current collection contact 8 are fixed, for example, additional contact 9, intended for sliding along the adjacent section 5 of the resistive element. Number the number of sections of the resistive element and the number of additional contacts can be increased in accordance with the required measurement range.The telescopically sections 2 and 3 are placed on the outer surface of the connected to the main current-collecting contact 8, the conductive elements 10, electrically connected to each other through tension springs b and 7, and terminating in a current-conducting contact 11. The current-carrying contact 1 is the main. By means of contacts 11 and 12, the converter is included in an electrical measuring circuit ( not shown in figures).

The Converter operates as follows.

When a controlled object is moved (not proved in the figures), the telescopic sections 1, 2 and 3 move relative to each other, and contacts 8 and 9 slide along sections 4 and 5 of the resistive element. The change in the total resistance of the resistive element is a function of the movement being measured.

When using the proposed converter, it is not necessary to mount the free end of the roo: chord on the moving object and use an additional conductor to connect the resistive element with the measuring circuit, thereby increasing the reliability of the converter.

Formula

the invention

1. A linear linear displacement transducer, comprising a housing, a resistive element mounted in the housing, a slip-resistant contact sliding on the resistive element and a TIRING SUPPLY contact connected to one of the ends of the resistance element, characterized in that, to improve reliability, the converter housing is made of connected with tension springs of telescopic sections, on the inner surfaces of telescopic sections, besides the first one, which is connected in the process of measurements with a controlled object, is placed portions of the resistive element, and at the ends of the resistive portions, except the last one, the collector contact of identical fixed auxiliary contacts, each of which is designed to slide on the adjacent portion of the resistive element ..

2. Rheostatic transducer POP.1, characterized in that on the outer surface of the telescopic sections there are conductor elements connected to the main current collector contact, electrically connected to each other through extension springs.

Information sources,. taken into account in the examination

1.Turichin A.M. Electrical measurements of non-electrical quantities. M. L. : Gosenergo $ 1, 1959, p. 23-2

2. USSR author's certificate

.№ 358608, cl. G 01 B 7/14, 1971 (prototype).

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Claims (2)

Claim 1Restative linear displacement transducer comprising a housing, a resistive element installed in the housing, a current collector contact sliding over the resistive element, and a current supply contact connected to one end of the resistive element, characterized in that, in order to increase reliability, the converter housing is made of connected tensile springs of telescopic sections, on the inner surfaces of the telescopic sections, except for the first, connected during the measurement with the controlled one. the object, the sections of the resistive element are placed, and at the ends of the resistive sections, in addition to the last, additional contacts identical to the current-collecting contact are fixed, each of which is designed to slide along the neighboring section of the resistive element. 2. Resistor converter pop. 1, characterized in that on the outer surface of the telescopic sections are placed conductive elements connected to the main current collecting contact, electrically connected to each other through tension springs.