CN105865730A - Adaptive tuning vibration table and detection method - Google Patents

Abstract

An adaptive tuning vibration table and a detection method belong to the field of instrument detection. It solves the problem that the existing instrument vibrating table cannot adaptively control the vibration frequency and cannot monitor the vibration effect in real time. The invention can automatically adjust the vibration frequency of the vibrating support, automatically adjust and control the vibration amplitude of the instrument to be tested, so that the vibration frequency of the vibrating support and the instrument to be tested can reach resonance, and modulate the frequency that can generate resonance, so as to maximize the vibration amplitude of the instrument , can impact the instrument in the largest range, monitor the entire vibration process in real time, and measure instrument parameters quantitatively. The invention is mainly used for detecting the instrument to be tested.

Description

An adaptive tuning vibration table and detection method

technical field

The invention belongs to the field of instrument detection.

Background technique

At present, the instrument detection vibration table is large, complex, expensive, and the accuracy of calibrating the instrument is low. The existing instrument detection vibration table can realize the vibration of the instrument, but the vibration amplitude, vibration frequency and vibration time are not quantitative. , At the same time, the vibration process is not controlled, and the effect of vibration cannot be monitored in real time.

Contents of the invention

The invention aims to solve the problem that the existing instrument vibration table cannot adaptively control the vibration frequency and cannot monitor the vibration effect in real time; the invention provides an adaptive tuning vibration table and a detection method.

An adaptive tuning vibration table, which includes a camera, a PC, a control circuit board, a solenoid valve, a cylinder, an elastic connection device, a vibration support and an alarm device;

The vibration support is fixed on the elastic connection device, and the vibration support is used to fix the instrument to be tested;

The camera is used to collect the image information of the instrument under test in real time. The data signal output end of the camera is connected to the data signal input end of the PC, the control signal output end of the PC is connected to the control signal input end of the control circuit board, and the data signal output end of the PC is connected to the control signal input end of the control circuit board. The signal output end is connected with the data signal input end of the control circuit board;

The alarm signal output end of the control circuit board is connected with the alarm signal input end of the alarm device, and the data signal output end of the control circuit board is connected with the data signal output end of the instrument to be tested;

The control circuit board controls the movement of the cylinder by controlling the on/off of the solenoid valve, and the movement of the cylinder drives the elastic connection device and the vibrating support to move in sequence.

The invention can automatically adjust the vibration frequency of the vibrating support, so that the vibration frequency of the vibrating support and the instrument to be tested can reach resonance, the whole vibration process can be monitored in real time, and the parameters of the instrument can be quantitatively measured.

The vibrating table of the present invention automatically adjusts and controls the vibration amplitude and frequency of the instrument to be tested, caters to the vibration frequency of the vibration support, and modulates the frequency that can generate resonance, so as to maximize the vibration amplitude of the instrument and impact the instrument in the largest range. It does not cause damage to the instrument.

The image obtained by the camera, the PC gradually increases the vibration frequency, and obtains the maximum amplitude according to the image feedback, while maintaining this frequency, and vibrating for three minutes. Monitor the data of the meter under test in real time, judge the state of the meter according to the pre-designed meter characteristics, and if there is a problem, it will call the police, and provide alarm problems such as abnormal indicator lights of the meter, falling off of the meter pointer, etc., corresponding to different alarm prompts, for supply The engineer analyzes the cause.

The beneficial effect brought by the present invention is that the present invention can adjust the vibration frequency by adjusting the low-frequency signal sent by the PC according to the natural frequency of the instrument to be tested and the vibrating support, and the vibration frequency can be adaptively controlled to make the instrument to be tested and the vibration support The bracket resonates, and the vibration effect is monitored in real time.

Description of drawings

FIG. 1 is a schematic diagram of the principle of an adaptive tuning vibration table according to the present invention.

detailed description

Specific embodiment one: refer to Fig. 1 to illustrate this embodiment, a kind of self-adaptive tuning vibrating table described in this embodiment, it comprises camera 1, PC machine 2, control circuit board 3, electromagnetic valve 4, cylinder 5, elastic connection Device 6, vibration support 7 and alarm device 8;

The vibration support 7 is fixed on the elastic connecting device 6, and the vibration support 7 is used to fix the instrument to be tested;

The camera 1 is used to collect image information of the meter under test in real time, the data signal output end of the camera 1 is connected to the data signal input end of the PC 2, and the control signal output end of the PC 2 is connected to the control signal input end of the control circuit board 3 , the data signal output end of PC 2 is connected with the data signal input end of control circuit board 3;

The alarm signal output end of the control circuit board 3 is connected with the alarm signal input end of the alarm device 8, and the data signal output end of the control circuit board 3 is connected with the data signal output end of the instrument to be tested;

The control circuit board 3 controls the on/off of the solenoid valve 4 to control the movement of the cylinder 5, and the movement of the cylinder 5 drives the elastic connection device 6 and the vibrating support 7 to move in sequence.

In this embodiment, by adjusting the vibration frequency of the vibration support 7, the vibration frequency of the vibration support 7 is the same as the natural frequency of the instrument to be tested, so that the two resonate. Under this resonance frequency, the vibration amplitude of the instrument to be tested is the largest. And after continuing to vibrate at this frequency for 3 minutes, check whether the instrument under test is abnormal.

work process:

The camera collects part of the image of the vibration support, and analyzes whether the instrument is installed in place and whether it is powered on. After the analysis is normal, start to send the vibration frequency value and transmit it to the control circuit board. The output control frequency of the control circuit board 3 provides the opening and closing of the solenoid valve 4. At this time, the cylinder 5 starts to vibrate back and forth. The camera 1 analyzes the collected images in real time to obtain the amplitude and the working status of the instrument. Because the elastic connection device is used between the instrument and the cylinder, the resonance frequency is reached when the vibration amplitude is maximum, and this frequency is maintained at this time. until the predetermined vibration time is reached. Analyze the results of the vibrations from the acquired images. appears on the screen. If a problem needs to be reported to the police, the alarm device is triggered.

Specific embodiment two: refer to Fig. 1 to illustrate this embodiment, the difference between this embodiment and a kind of self-adaptive tuning vibrating table described in specific embodiment one is that it also includes a power supply 9, and the power supply 9 is used to power the control circuit board 3 Provide electrical energy.

Specific embodiment three: this embodiment adopts the detection method realized by an adaptive tuning vibration table described in specific embodiment one, and the method includes the following steps:

Step 1: The instrument to be tested remains in a static state, the camera 1 collects the vibration image of the instrument to be tested in real time, and the PC 2 sends a low-frequency signal to the control circuit board 3, and the low-frequency signal is sent from the starting value at intervals of 0.05Hz to the final value , while the control circuit board 3 sends data signals to the instrument under test, so that the instrument under test is in a normal working state;

Step 2: The control circuit board 3 outputs a control signal to control the solenoid valve 4 to close, so that the cylinder 5 starts to work, and the movement of the cylinder 5 sequentially drives the elastic connection device 6 and the vibrating support 7 to move together, so that the instrument under test vibrates on the vibrating support 7 ;

Step 3: The PC 2 collects the vibration image of the instrument under test in real time through the camera 1 to obtain the amplitude of the instrument under test, and the PC 2 obtains the maximum amplitude of the instrument under test within the frequency band of the low-frequency signal sent by it;

Step 4: When PC 2 obtains the maximum amplitude of the instrument to be tested, PC 2 maintains the frequency corresponding to the maximum amplitude of the instrument to be tested, so that the instrument to be tested vibrates at this frequency for 3 minutes, and PC 2 According to the characteristics of the instrument to be tested, it is judged whether the instrument to be tested is abnormal. When the instrument to be tested is abnormal, the alarm device 8 is controlled by the control circuit board 3 to give an alarm.

Claims (3)

1. a self-adapting tuning vibration table, it is characterised in that it includes photographic head (1), PC (2), control circuit Plate (3), electromagnetic valve (4), cylinder (5), elastic connecting device (6), vibration rack (7) and alarm device (8)；

Vibration rack (7) is fixed on elastic connecting device (6), and vibration rack (7) is used for fixing meters under test；

Photographic head (1) is for the image information of Real-time Collection meters under test, the data signal output of photographic head (1) and PC The data signal input of machine (2) connects, the control signal outfan of PC (2) and the control of control circuit plate (3) Signal input part connects, and the data signal output of PC (2) is connected with the data signal input of control circuit plate (3)；

The alarm signal output ends of control circuit plate (3) is connected with the alarm signal input of alarm device (8), controls electricity The data signal output of road plate (3) is connected with the data signal output of meters under test；

Control circuit plate (3) is by controlling the on/off of electromagnetic valve (4), thus controls the motion of cylinder (5), cylinder (5) Motion drive successively elastic connecting device (6) and vibration rack (7) linkage.

A kind of self-adapting tuning vibration table the most according to claim 1, it is characterised in that it also includes power supply (9), Power supply (9) is for providing electric energy to control circuit plate (3).

3. use the detection method that a kind of self-adapting tuning vibration table described in claim 1 realizes, it is characterised in that the party Method comprises the steps:

Step one: meters under test keeps resting state, the vibrational image of photographic head (1) Real-time Collection meters under test, PC (2) send low frequency signal to send out to control circuit plate (3), this low frequency signal by threshold value is incremental successively with 0.05Hz for interval Sending until final value, control circuit plate (3) sends data signal to meters under test simultaneously, makes meters under test be in normal work State；

Step 2: control circuit plate (3) output control signal controls electromagnetic valve (4) Guan Bi, makes cylinder (5) start working, The motion of cylinder (5) drives elastic connecting device (6) and vibration rack (7) linkage successively, so that meters under test is shaking The upper vibration of dynamic support (7)；

Step 3: the PC (2) vibrational image by photographic head (1) Real-time Collection meters under test, it is thus achieved that meters under test Amplitude, PC (2) is in the frequency range of its low frequency signal sent, it is thus achieved that meters under test amplitude maximum；

Step 4: when PC (2) obtains meters under test amplitude maximum, PC (2) keeps meters under test amplitude Frequency corresponding during big value, makes meters under test vibrate 3 minutes under this frequency, and PC (2) is according to the instrument to be measured set Table feature, it is judged that meters under test is the most abnormal, when meters under test exception, controls alarm device by control circuit plate (3) (8) report to the police.