RU178307U1 - VIBROSTEND FOR CALIBRATING PIE-SENSORS - Google Patents

Abstract

The utility model relates to measuring technique and is intended for calibrating piezometric sensors, in particular for creating a controlled effect on calibrated piezoelectric sensors. The proposed solution can be used in instrumentation, mechanical engineering, and other industries where it is necessary to test products for resistance to flat and spatial mechanical stresses. The technical result is to increase the reliability of the results and simplify the design of the installation for calibrating piezoelectric sensors. The technical result is achieved by the fact that calibration of piezoelectric sensors, including a plate and a solid base, according to the present utility model, a plate on which GSI test object using a magnet is movable and is connected in parallel with a massive base elastic guiding system consisting of four guide rods on which eight identical springs are placed. 1 ill.

Description

The utility model relates to measuring technique and is intended for calibrating piezometric sensors, in particular for creating a controlled effect on calibrated piezoelectric sensors. The proposed solution can find application in instrumentation, engineering and other industries where it is necessary to check products for resistance to flat and spatial mechanical stresses.

где n₁, n₂ и n₃ - компоненты заданных виброускорений в центральных ортогональных осях объекта, при этом узлы крепления выполнены с возможностью установки объекта так, что одна из центральных ортогональных осей объекта, совпадающая с направлением вибрации

, образует с ребром двугранного угла угол

The prototype is a multidirectional test vibration bench (RF patent No. 2237131 dated 06/20/2008, IPC G01M 7/06), including a vibration exciter, a platform having a base for connecting to a vibration exciter table and a base with nodes for mounting the test object, while the platform base plane with the nodes for fastening the test object forms a dihedral angle with the base plane for connection with the table of the exciter,

 where n_one, n₂ and n₃ - components of the specified vibration accelerations in the central orthogonal axes of the object, while the attachment points are configured to install the object so that one of the central orthogonal axes of the object coincides with the direction of vibration

forms an angle with the edge of the dihedral angle

The disadvantages of the prototype include the complexity of the design due to the need to comply with the dihedral angle between the plane of the base of the platform with the nodes for attaching the object and the plane of the base for connecting to the vibration exciter table, massive installation, and lack of mobility.

The objective of the utility model is the development of a vibration bench for calibrating piezoelectric sensors, which eliminated the disadvantages of the prototype.

The technical result is to increase the reliability of the results and simplify the design of the installation for calibrating piezoelectric sensors.

The technical result is achieved by the fact that in a vibrating stand for calibrating piezoelectric sensors, including a plate and a massive base, according to the present utility model, the plate on which the test object is mounted with a magnet is movable and in parallel is connected to the massive base by a system of elastic guides consisting of four guide rods on which eight identical springs are placed.

The essence of the utility model is illustrated by the drawing, where in FIG. 1 shows a vibration stand for calibrating piezoelectric sensors, FIG. 2 - implementation diagram of the inventive device.

The numbers in the drawings indicate:

1 - massive base;

2 - spring;

3 - movable plate;

4 - a directing core.

5 - digital-to-analog and analog-to-digital converter (DAC-ADC);

6 - amplifier audio signal;

7 - electro-acoustic emitter;

8 - vibration stand for calibrating piezoelectric sensors;

9 - calibrated piezoelectric sensor;

10 - calibration piezoelectric sensor.

The vibrostand for calibrating piezoelectric sensors consists of a massive base 1, which is a metal plate, a movable plate 3, which is a sheet of steel 1.2 mm thick, a system of elastic guides, consisting of four guide rods 4, on which eight identical springs 2 are placed.

To explain the operation of the vibrostand for calibrating piezoelectric sensors included in the installation for calibrating piezoelectric sensors, figure 2 shows the implementation diagram of the claimed device.

Calibrated 9 and calibration sensors 10 are mounted on the movable plate 3 using a magnet so that its axis of sensitivity coincides with the direction of oscillation excited by the electro-acoustic emitter 7 using a controlled adjustable effect, the amplitude and frequency of which lie within the respective ranges of the sensors. DAC-ADC 5 has an output to a personal computer (conventionally not shown in the drawing). The sound frequency generated by the program with the ability to adjust the frequency of the signal in a wide range, installed in a personal computer, passes through the DAC-ADC 5 and is fed to the audio frequency amplifier 6, which, in turn, transmits a signal to the electro-acoustic emitter (vibration exciter) 7, placed on massive base 1 of the vibration stand 8. The movable plate 3 is transmitted oscillations along the sensitivity axis of the calibrated sensor 9 by a system of elastic guides, consisting of four guide rods 4, on which scheny eight identical springs 2. The resulting input signal applied to the transducers 9 and 10 are electroacoustic transducer 7, and the output signal fed back to DAC-ADC 5 and further into the personal computer. The computer program determines the sensitivity of the sensors 9 and 10 in the operating range of frequencies and amplitudes.

Claims (1)

A vibration bench for calibrating piezoelectric sensors, including a plate and a massive base, characterized in that the plate on which the test object is mounted with a magnet is movable and is connected in parallel with the massive base with a system of elastic guides consisting of four guide rods on which eight identical springs are placed .

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