SU559137A1 - Magnetoelastic force sensor - Google Patents

Description

one

The invention relates to the field of force-measuring equipment and can be used to measure usi, sj, mainly up to 1 kg of kg.

The known magnetoelastic sensors of efforts made on the basis of a map pipeline with openings for accommodating the measuring windings included in the measuring circuit do not provide the required sensitivity and PFCO range of MEASUREMENT.

Also known magnetotraggy force sensor. Containing a bent closed magnetic circuit. in the form of a package of kinetura-connected magnetic strut plates with a hole; i5C -.in to accommodate the measuring windings included in the measuring circuit; /.

However, it is not the same as the fact that it does not provide the required sensibility and the range of measurements, as indicated; the sensor is intended only for a specific range of measurable forces, in hours, degrees, on the order of 0-ZOOg, and in its canister 1. ng; the possibility of a quick adjustment to a different range of measurable forces is provided.

The purpose of the invention is to increase the sensitivity and expansion of the range of measured forces.

This is achieved by the TGN, that in the magnetoelastic sensor there is an amplification, containing a housing with a hatch in which a transmitting element is mounted, and a magnetic circuit in the form of plates connected with a nonmagnetic FP with holes for accommodating the measuring windings, including a jeflfix in a pattern, a 4-gauge circuit, a sharf, 4, and a 4-gauge circuit, too, can be attached to a set of 4-pin diagrams, with openings that accommodate the measuring windings, including a 4-pinn-4xflash, in the pattern, there is a 4-gauge, and the 4-pin pattern has a set of 4-gauge, a 4-gauge, 4-gauge, 22-gauge; stepped support platforms with plate wrinkles that are closed with bolts: B and bolts; and KoiauoBbit; stops mounted on stu; 1E1 chassis supports.

Claims (1)

On fpg. 1 depicts a magical 1-elastic force sensor; la fig. 2 - section along the AL on the flt. one; ia of FIG. 3 - section on Ee-B on fi). one; in fig. 4 - scheme is included) -. measure1; tel. Winding with different signs the increment of magnetic magnetic ironiness} in FIG. 5 - the same, with the same increment signs. The sensor contains a power-transmitting element 3 located in housing i with a lid 2, in which a power supply element 3 is mounted, a magnetic conductor in the form of plates 5c connected along the contour by nonmagnetic elements 4 from cords for fastening elements, for example bolts 6 and 7, and for accommodating measuring windings 8. V non-magnetic elements 4 are introduced mirror-spaced stepped support pads 9 pp plates 5 and end stops 10, mounted on the stepped supports 11 (see Fig. l) of the housing 1. Plates 5 are fixed on the support pads 9 non-magnetic elements 4 using art. elements, for example, bolts 6 and 7. The chester bolt 12 in the upper part is made in the form of a hemisphere, which through the force-transmitting element 3 absorbs the measured force R. The windings 8 of the upper and lower plates 5 are connected to the opposite shoulders of the measuring Bridge circuit (see FIG. 4 and This allows you to eliminate the zero signal, compensating, in the absence of R. effort, to fill the additive component of the temperature error, since the temperature changes in the permeability of both plates will be the same, and this will also reduce the error In other words, hysteresis changes in the course of the characteristics of the stretchable and compressible plates will also be partially compensated in the measuring bridge circuit. The sensor works as follows. When the force P is applied, the magnetic core is subjected to bending, when a compressive stress develops in the upper plate 5, and a tensile stress occurs in the lower plate. With one and the same force P, these voltages are greater, the smaller the distance between the plates 5, which is measured & n by using plates fixed at the corresponding step of the non-magnetic elements 4 by bolts 6. For example, with a thickness of 1 chastine equal 10 mm, u & winding holes 10 mm, plate width 20 mm and the distance between the center and side holes for bolts 6 and 7, equal to 65 mm, the characteristics of the sensor are as follows. The distance between the plates is 10 mm (the first stage of non-magnetic elements 4). At Р 8О kg, a voltage arises in the magnetic core, which is equal to 10,000 cm / cm (considered as the upper measurement limit. The total signal will be equal to the sum of the signals of two compressible (upper magnetic plate) and two expandable circuits (lower magnetic core plate), each they are valid .. loading in i kg i At distances of 2,0 mm (second time; neiAnGy elements) the same modes and the same output signal will be received at Р 130 kg, and at a distance of 30 mm (third stage) - at Р 180 kg. In the examples given, the ENERGENCY is not read. when the end stops, an increase in which contributes to a significant increase in sensitivity, the ecTi occur in the plates of the same stresses at lower measurable forces. Invention The magnetoelastic force sensor, comprising a housing with a lid, in which the WMO sender element, and the magnetic conductor non-magnetic elements of the plate with the hole for placing the measuring windings included in the measuring circuit, from the field and so that, in order to increase the sensitivity In order to expand the range of measured forces, stepped support platforms with holes for the plates, which are fastened with bolt-shaped fasteners, and end stops mounted on the oifojaax bodies, are introduced into the non-magnetic element. / I / 7 Э 5 fZ FIG. 7 8Д- / 1 i Ф (г.2 8 B-5 F1L J