SU873155A1 - Device for touch-free measuring of wire diameter - Google Patents

Description

The invention relates to techniques for radio measurements.

A device is known for non-contact measurement of the diameter of the wire, containing a microwave, generator, cavity resonator, microwave detector and indicator £ 1]

The disadvantage of this device is the narrow range of measured values of the diameter of the wire. ...

It is also known a device for non-contact measurement of the diameter of the wire, containing a series-connected microwave generator, a resonator with communication elements, a detector and an indicator ^}. fifteen

However, this device also has a narrow range of measured values of the wire diameter.

The purpose of the invention is the expansion of the range of the measured values of Dia-20 ra wire while maintaining the continuity of the process of its manufacture.

For this, the device for non-contact measurement of the diameter of the wire, containing sequentially connected * * * * microwave generators, a resonator with communication elements, a detector and an indicator, is equipped with a mechanism for turning the resonator together with communication elements around an axis crossing the measured 30 wire at right angles, and the resonator made in the form of two reflectors coaxial with the axis of rotation.

In FIG. 1 shows a structural diagram of a device; in FIG. 2 - design of the device.

A device for non-contact measurement of the diameter of the wire contains a series-connected microwave generator 1, a resonator 2 with communication elements 3, a detector 4, an indicator 5, and also a mechanism 6 for turning the resonator 2 together with communication elements 3 around an axis crossing the measured wire 7 at right angles, this resonator 2 is made in the form of two reflectors 8 and 9, coaxial with the axis of rotation. The rotation mechanism 6 consists, for example, of a gear system 10 provided with a rotation angle meter 1 *.

The device operates as follows.

The signal from the microwave generator 1, operating in the frequency sweep mode, or in the continuous or pulsed generation mode, enters the resonator

2, the reflectors 8 and 9 of which can be rotated synchronously relative to the axis of the measured wire 7 using the rotation mechanism and. then they go to detector 4 and indicator 5. The diameter measurement is based on measuring the angle of rotation of the resonator 2, which provides a fixed value of the loss (or shift of the resonant frequencies) introduced into the resonator 2 by the measured wire 7.

After turning on the power of the microwave generator 1 and indicator 5, the arrow of indicator 5 is set to zero. To do this, using the rotation mechanism 6, the resonator 2 is installed at an angle that ensures the orthogonality of the polarization vector of the microwave field of the axis of the measured wire 7. In this position, the measured wire 7 does not distort the field of the resonator 2, therefore, the resonant frequency and the quality factor of the resonator 2 with the measured wire 7 correspond to the natural frequency and the quality factor of the empty resonator 2. In this case, the arrow of the indicator 5 is set to the zero mark of the scale. Next, with the help of mechanism b, the resonator 2 is rotated, which causes the arrow of the indicator 5 to deviate from the zero mark, since if the orthogonality between the polarization vector of the microwave field in the resonator 2 is violated. and the axis of the measured wire 7, the latter introduces losses into the resonator 2 (or causes a shift in the resonant frequency), and the magnitude of these losses (frequency shift) is greater, the larger the diameter of the measured wire 7 and the smaller the angle between the axis of the measured wire 7 and the microwave field vector in the resonator 2. As a result, the fixed position of the arrow of the indicator 5, for example, in the center of the scale for the measured wires of different diameters, corresponds to different angles of rotation of the resonator 2 until the arrow of the indicator 5 deviates to about the middle of the scale, and using the angle gauge 11, the scale of which is calibrated in terms of the diameter of the wire, determine the average thickness of the measured wire 7. In addition, 5 when pulling the measured wire 7, the deviation of the indicator 5 from the center of the scale determines the absolute value of the heterogeneity (deviations from average value) <l of the diameter of the moving measured wire 7.

The proposed device in comparison with the known provides a wider range of measured values of the diameter of the wire while maintaining * 5 the continuity of the manufacturing process.

Claims (2)

   1 The invention relates to a radio measurement technique. A device is known for infinitely measuring the diameter of a wire containing a microwave, a generator, a cavity resonator, a microwave detector and an indicator. The disadvantage of this device is the narrow range of measured values of the diameter of the wire. It is also known a device for contactless measurement of the diameter of a wire containing a series-connected microwave generator, a resonator with communication elements, a detector, and an indicator of 2 J. However, this device also has a narrow interval of measured values of wire displacement. The purpose of the invention is to expand the interval of the measured values of the diameter of the wire while maintaining the continuity of its manufacturing process. For this purpose, a device for contactless measurement of the wire diameter containing a series-connected microwave generator, a resonator with communication elements, a detector and an indicator are equipped with a rotation mechanism of the resonator together with communication elements around the axis crossing the measured wire at a right angle, and the resonator is made in the form of two reflectors coaxial with the axis of rotation. FIG. 1 shows a block diagram of the device; in fig. 2 - device design. A device for contactless measurement of the diameter of a wire contains a series-connected SBSh generator 1, a resonator 2 with 3 coupling elements, a detector 4, an indicator 5, as well as a mechanism 6 for turning the resonator 2 together with 3 coupling elements around an axis, crossing the measured wire 7 under right angle, while the resonator 2 is made in the form of two reflectors 8 and 9, coaxially with the axis of rotation. The mechanism 6 of rotation consists, for example, of a system of gears 10, equipped with a meter 1 angle. The device works as follows. The signal from the microwave generator 1, operating in the frequency sweep mode, or in the continuous or pulsed generation mode, enters the resonator 2, the reflectors 8 and 9 of which can synchronously rotate about the axis of the measured wire 7 using the rotation mechanism i. The detector 4 and the indicator are then passed. The diameter measurement is based on measuring the rotation angle of the resonator 2, which provides a fixed value of the loss 7 introduced into the resonator 2 (or the shift of the resonant frequencies. After turning on the power supply of the microwave generator 1 and indicator 5, the indicator arrow 5 is set For this, using the rotation mechanism, the resonator 2 is set at an angle ensuring the orthogonality of the polarization vector of the microwave field of the axis of the measured wire 7. In this position, the measured wire 7 is not It shows the resonator field 2, therefore the resonant frequency and quality factor of the resonator 2 with the measured wire correspond to the natural frequency and quality factor of the empty resonator 2. At the same time, the indicator arrow 5 is set to zero scale, Next, using the mechanism b, the resonator 2 rotates the deviation of the indicator hand from the zero mark, since if orthogonality between the polarization vector of the microwave field in the resonator 2 and the ocbto of the measured wire 7 is disturbed, the latter causes the loss of the resonator 2 (or resonance frequency), and the magnitude of these losses (frequency shift) is greater, the larger the diameter of the measured wire 7 and the smaller the angle between the axis of the measured wire 7 and the intensity vector of the microwave field in the resonator 2. As a result, the fixed position of the arrow is Indicator 5, for example, in the center of the scale for measuring wires of different diameters, correspond to different angles of rotation of the resonator 2 until the arrow of indicator 5 deviates to the middle of the scale, and by the angle gauge 11, the scale of which is calibrated The x diameter of the wire determines the average thickness of the measured wire 7. Moreover, by pulling the measured wire 7 by the deviation of the indicator hand 5 from the center of the scale, the absolute heterogeneity value (deviation from the average diameter of the moving measured wire 7) is determined. The device, as compared with the known one, provides a wider range of measured values of the wire diameter while maintaining the continuity of its manufacturing process. Apparatus for contactless measurement of wire diameter, comprising a series-connected super-high-frequency generator, a resonator with communication elements, a detector and an indicator, characterized in that, in order to extend the interval of measured values of the wire diameter while maintaining the continuity of its manufacture, it is equipped with a resonator turning mechanism together with communication elements around the axis. pseosekakitsy measured wire at a right angle, and the resonator is made in the form of two reflectors, coaxially with the axis of rotation. Sources of information taken into account in the examination 1. US patent 3379263, kl.324-53, published. 1973. 2. Technique submillimeter waves. Ed. PiA.Valitova. M., Soviet Radio, 1969, p. 343, fig. 6.14 prototype.