Vibration magnitude monitoring system, method, device and equipment for vibration table

Abstract

The invention relates to the technical field of vibration testing, and discloses a vibration magnitude monitoring system, method, device and equipment for a vibration table, and the system comprises a data collection module and a vibration magnitude monitoring module. The number of the vibration tables is one or more; the data acquisition module is used for acquiring vibration signals generated by the vibration table at different positions in different working states and transmitting the vibration signals to the vibration magnitude monitoring module, the vibration magnitude monitoring module determines the vibration magnitude according to the vibration signals, and when the vibration magnitude exceeds a preset threshold value, an alarm signal is automatically triggered; and the data acquisition module transmits the alarm signal to the vibration table, so that the vibration table stops working. According to the invention, the data acquisition module is installed on the vibration table, so that synchronous measurement of vibration signals at different positions of a single vibration table or synchronous measurement of vibration signals of a plurality of vibration tables can be ensured, the vibration state of the vibration table is monitored in real time, and abnormal vibration is quickly responded.

Description

Technical Field

[0001] The present invention relates to the field of vibration testing technology, and in particular to a vibration level monitoring system, method, device and equipment for a vibration table. Background Art

[0002] With the development of industrial automation, the demand for monitoring and analyzing mechanical vibration is growing. Traditional vibration monitoring systems often fail to monitor properly and are difficult to adapt to changing test environments. In the existing technology, the calibration and measurement methods of vibration table motion can be achieved, but the operation is cumbersome, expensive, and has high maintenance costs. Summary of the invention

[0003] In view of this, the present invention provides a vibration level monitoring system, method, device and equipment for a vibration table to solve the problem that the monitoring system in the prior art cannot monitor properly.

[0004] In a first aspect, the present invention provides a vibration level monitoring system for a vibration table, the monitoring system comprising: a data acquisition module and a vibration level monitoring module;

[0005] The data acquisition module is installed on the vibration table and connected to the vibration level monitoring module;

[0006] The data acquisition module is used to collect vibration signals generated at different positions of the vibration table under different working conditions, and transmit the vibration signals to the vibration level monitoring module. The vibration level monitoring module determines the vibration level according to the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold. The data acquisition module transmits the alarm signal to the vibration table, causing the vibration table to stop working.

[0007] The vibration level monitoring system for a vibration table provided by the present invention collects vibration signals generated by the vibration table through a data acquisition module, and transmits the vibration signals to the vibration level monitoring module. The vibration level monitoring module determines the vibration level according to the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold value. The data acquisition module transmits the alarm signal to the vibration table, so that the vibration table stops working. The data acquisition module is installed on the vibration table to ensure synchronous measurement of vibration signals at different positions of a single vibration table or synchronous measurement of vibration signals of multiple vibration tables, real-time monitoring of the vibration state of the vibration table, rapid response to abnormal vibration, and avoidance of the vibration table being unable to shut down when the controller of the vibration table itself fails, thereby improving the safety and reliability of the vibration table, extending the service life of the vibration table, and solving the problem of insufficient monitoring of the monitoring system in the prior art.

[0008] In an optional embodiment, the data acquisition module includes at least one acceleration sensor, a charge amplifier and a data acquisition card connected in sequence, the vibration table is installed in the vibration table system, and the vibration table includes a vibration table body;

[0009] When the number of vibration tables is single, at least one acceleration sensor is installed on the surface of the vibration table body, and is used to collect vibration signals at different positions of the single vibration table under different working conditions, and transmit the vibration signals to the charge amplifier; the vibration signal is a vibration acceleration signal;

[0010] The charge amplifier is used to amplify and remove noise from the vibration signal to obtain a vibration analog signal, and transmit the vibration analog signal to the data acquisition card;

[0011] The data acquisition card uses a multi-channel synchronous acquisition method to transmit the vibration simulation signal to the vibration level monitoring module.

[0012] In an optional embodiment, when there are at least two vibration tables, at least one acceleration sensor is installed on the surface of each vibration table body, which is used to collect vibration signals of each vibration table at different positions under different working conditions, and transmit the vibration signals to the charge amplifier; the vibration signal is a vibration acceleration signal.

[0013] The vibration magnitude monitoring system for a vibration table provided by the present invention has at least one acceleration sensor installed on the surface of the vibration table body, so as to achieve the purpose of collecting vibration signals of a single vibration table at different positions under different working states, obtain vibration simulation signals after amplifying and denoising the vibration signals through a charge amplifier, thereby improving the reliability and accuracy of the vibration signals, use a data acquisition card for data acquisition, and use a device that is compatible with the software of a vibration magnitude monitoring module and supports high-speed data transmission, supports multi-channel synchronous acquisition, and can ensure synchronous measurement of vibration signals at different positions of a single vibration table or synchronous measurement of vibration signals of multiple vibration tables, monitor the vibration state of the vibration table in real time, and respond quickly to abnormal vibrations, and the data acquisition module is simple to operate, highly flexible, and inexpensive.

[0014] In an optional implementation, the vibration level monitoring module includes a calculation unit and a display module; the calculation unit is used to determine the vibration level according to the vibration signal and display the vibration level on the display module.

[0015] In an optional implementation, the display module is also used to display the waveform curve of the vibration signal, the positive peak value of the vibration signal voltage, the effective value of the vibration signal voltage and the peak-to-peak value of the vibration signal voltage.

[0016] The vibration level monitoring system for a vibration table provided by the present invention uses a vibration level monitoring module to simplify the system development and debugging process, and provides an intuitive vibration data analysis and display, which is easy for users to understand and operate. For different vibration tests, the alarm threshold can be customized in the vibration level monitoring module, which improves the flexibility and safety of vibration monitoring.

[0017] In an optional embodiment, the vibration level monitoring system for the vibration table further includes an alarm module, the vibration table system includes a vibration table controller, and the alarm module and the vibration table controller are both connected to the data acquisition module;

[0018] When the vibration level exceeds the preset threshold, the alarm module is automatically triggered, causing the alarm module to send out an alarm signal, and the data acquisition module transmits the alarm signal to the vibration table controller, and the vibration table controller controls the vibration table to stop working.

[0019] The vibration level monitoring system for a vibration table provided by the present invention monitors the vibration level in a vibration test, automatically triggers an alarm module when the vibration level exceeds a preset threshold, and cooperates with the controller of the vibration table system for protection, so as to automatically stop working when the vibration level exceeds the preset threshold, thereby protecting the equipment in the vibration table system.

[0020] In a second aspect, the present invention provides a vibration level monitoring method for a vibration table, which is applied to the vibration level monitoring system for a vibration table according to the first aspect or any corresponding embodiment thereof, and the method comprises:

[0021] The data acquisition module is used to collect vibration signals generated at different positions of the vibration table under different working conditions, and the vibration signals are transmitted to the vibration level monitoring module;

[0022] The vibration level monitoring module is controlled to determine the vibration level according to the vibration signal, and an alarm signal is automatically triggered when the vibration level exceeds a preset threshold, and the data acquisition module is controlled to transmit the alarm signal to the vibration table, so that the vibration table stops working.

[0023] In a third aspect, the present invention provides a vibration level monitoring device for a vibration table, which is applied to the vibration level monitoring system for a vibration table according to the first aspect or any corresponding embodiment thereof, and the device comprises:

[0024] A vibration signal acquisition module is used to acquire the vibration signal generated by the vibration table using the data acquisition module, and transmit the vibration signal to the vibration level monitoring module;

[0025] The vibration level determination and comparison module is used to control the vibration level monitoring module to determine the vibration level according to the vibration signal, automatically trigger an alarm signal when the vibration level exceeds a preset threshold, and control the data acquisition module to transmit the alarm signal to the vibration table, so that the vibration table stops working.

[0026] In a fourth aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the vibration level monitoring method for a vibration table of the above-mentioned second aspect or any corresponding embodiment thereof by executing the computer instructions.

[0027] In a fifth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the vibration level monitoring method for a vibration table according to the second aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is a structural block diagram of a vibration level monitoring system for a vibration table according to an embodiment of the present invention;

[0030] Figure 2 is a structural block diagram of another vibration level monitoring system for a vibration table according to an embodiment of the present invention;

[0031] Figure 3 is a structural block diagram of a data acquisition module according to an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of a display interface of LabVIEW software according to an embodiment of the present invention;

[0033] Figure 5 is a vibration process diagram of a vibration level monitoring system for a vibration table according to an embodiment of the present invention;

[0034] Figure 6 is an alarm threshold diagram of a vibration level monitoring system for a vibration table according to an embodiment of the present invention;

[0035] Figure 7 is a schematic flow chart of a vibration level monitoring method for a vibration table according to an embodiment of the present invention;

[0036] Figure 8 is a structural block diagram of a vibration level monitoring system device for a vibration table according to an embodiment of the present invention;

[0037] Fig. 9It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] In this embodiment, a vibration level monitoring system for a vibration table is provided. Figure 1 is a structural diagram of a vibration level monitoring system for a vibration table according to an embodiment of the present invention, such as Figure 1 As shown, the system includes: a data acquisition module and a vibration level monitoring module; the data acquisition module is installed on the vibration table and connected to the vibration level monitoring module. The data acquisition module is used to collect vibration signals generated at different positions of the vibration table under different working conditions, and transmit the vibration signals to the vibration level monitoring module. The vibration level monitoring module determines the vibration level according to the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold. The data acquisition module transmits the alarm signal to the vibration table, causing the vibration table to stop working.

[0042] Specifically, Figure 2As shown, the vibration table is installed in the vibration table system and is used for various vibration tests to generate vibration signals. The vibration table system includes a vibration table, a power amplifier, and a vibration controller, and the vibration table includes a vibration table body. Among them, the vibration table body: the vibration table body is the core part of the vibration table, which is a converter that converts electrical energy into mechanical energy and is a vibration source. The function of the power amplifier is to amplify the low-power drive signal output by the vibration table controller to provide sufficient power to the drive coil of the vibration table. Vibration controller: The vibration controller transmits the low-power drive signal to the power amplifier according to the control spectrum, and performs real-time correction on the collected vibration signal before sending it to the power amplifier.

[0043] The data acquisition module is used to collect vibration signals at different positions of the vibration table under different working conditions (i.e., under different vibration tests), and transmit the vibration signals to the vibration level monitoring module.

[0044] The vibration level monitoring module is a vibration level monitoring program written in the graphical programming environment of LabVIEW. It is used to receive vibration signals from the data acquisition module to determine the vibration level, and to display the effective value of the vibration signal (effective value of voltage), positive peak value of voltage, peak-to-peak value of voltage, vibration level, and alarm functions exceeding the preset threshold in real time. By monitoring the vibration level in the vibration test and linking protection with the entire system including the vibration table, it can automatically stop working when the vibration level exceeds the preset threshold, thereby protecting the vibration table equipment. The vibration level monitoring module can be installed on hardware devices such as computers.

[0045] The vibration magnitude monitoring system for a vibration table provided by the present invention adopts a data acquisition module installed on the vibration table to ensure synchronous measurement of vibration signals at different positions of a single vibration table or synchronous measurement of vibration signals of multiple vibration tables, real-time monitoring of the vibration state of the vibration table, rapid response to abnormal vibration, avoiding the vibration table from being unable to shut down when the controller of the vibration table itself fails, improving the safety and reliability of the vibration table, extending the service life of the vibration table, and solving the problem of inadequate monitoring of the monitoring system in the prior art.

[0046] In an optional embodiment, if Figure 3 As shown, the data acquisition module includes at least one acceleration sensor, a charge amplifier and a data acquisition card connected in sequence, and the vibration table is installed in the vibration table system, and the vibration table includes a vibration table body.

[0047] When the number of vibration tables is single, at least one acceleration sensor is mounted on the surface of the vibration table body to collect vibration signals at different positions of the single vibration table under different working conditions and transmit the vibration signals to the charge amplifier.

[0048] In an optional embodiment, when there are at least two vibration tables, at least one acceleration sensor is installed on the surface of each vibration table, which is used to collect vibration signals of each vibration table at different positions under different working conditions, and transmit the vibration signals to the charge amplifier; the vibration signal is a vibration acceleration signal, and the vibration signal is a vibration acceleration signal.

[0049] Among them, the acceleration sensor is a device that can measure an object. IEPE type sensors and PE type sensors are used. The acceleration sensor of this embodiment is preferably a PE type sensor to ensure high-precision and high-sensitivity measurement. At least one acceleration sensor is installed on the surface of the vibration table body to detect the vibration acceleration signal of the vibration table at different positions under different working conditions in real time.

[0050] The charge amplifier is used to amplify and denoise the vibration signal to obtain a vibration simulation signal, and transmit the vibration simulation signal to the data acquisition card; specifically, the vibration signal collected by the acceleration sensor first passes through the charge amplifier, which contains an amplification circuit and an anti-aliasing filter. While amplifying the vibration signal, it improves the signal-to-noise ratio of the signal and removes high-frequency noise to obtain a vibration simulation signal, thereby ensuring the reliability of the vibration signal.

[0051] The data acquisition card uses a multi-channel synchronous acquisition method to transmit the vibration simulation signal to the vibration level monitoring module. Specifically, the data acquisition card uses the NI-USB-6210 data acquisition card for data acquisition. The vibration simulation signal is transmitted to the vibration level monitoring module through the data acquisition card. The NI-USB-6210 data acquisition card is compatible with LabVIEW software and supports high-speed data transmission and multi-channel synchronous acquisition, which can ensure the synchronous measurement of vibration signals at different positions of a single vibration table or the synchronous measurement of vibration signals of multiple vibration tables.

[0052] In an optional embodiment, the vibration level monitoring module includes a calculation unit and a display module; the calculation unit is used to determine the vibration level according to the vibration signal and display the vibration level on the display module. The display module is also used to display the waveform curve of the vibration signal, the positive peak value of the vibration signal voltage, the effective value of the vibration signal voltage and the peak-to-peak value of the vibration signal voltage.

[0053] Specifically, the vibration level monitoring module is a vibration level monitoring program written in the graphical programming environment of LabVIEW. The display interface diagram of the LabVIEW software of the embodiment of the present invention is as follows: Figure 4As shown, the software display interface consists of a parameter setting part and a data display part. The parameter setting part can configure the input and output ports, the number of samples per channel of the data acquisition card, the voltage sensitivity, the acceleration preset threshold, the sampling mode and mode selection determined according to the vibration waveform style (such as sine mode, random mode, impact mode). The data display part can display the current vibration signal waveform curve, the positive peak value of the vibration signal voltage, the peak-to-peak value of the vibration signal voltage, the effective value of the vibration signal voltage, the vibration magnitude and the flashing of the alarm light. The calculation unit adopts LabVIEW analysis software. The specific analysis and calculation process of the LabVIEW analysis software can be found in the relevant technical content, which will not be repeated here.

[0054] Wherein, the effective value of the vibration signal is represented by the effective value of the voltage, and the steps of determining the effective value of the voltage include:

[0055] 1. Get sampling data: Get the actual sampling data, that is, the voltage value measured at each sampling point.

[0056] 2. Calculate the square value: For the voltage square value of each sampling point, calculate its square.

[0057] 3. Sum: Sum the squared voltage values ​​of all sampling points.

[0058] 4. Calculate the average value: Divide the sum by the number of samples to get the average value of the square of the voltage.

[0059] 5. Square root: Take the square root of the average value of the square of the voltage to get the effective value of the voltage V RMS .

[0060] Voltage RMS V RMS The calculation formula is:

[0061]

[0062] Where: V RMS is the voltage RMS; N is the number of samples; V i is the voltage value of the i-th sampling point.

[0063] The steps to determine the positive peak voltage are:

[0064] 1. Collect data: During the sampling process, record the voltage value of each sampling point.

[0065] 2. Find the maximum value: Find the maximum value among all recorded voltage values.

[0066] 3. Determine the positive peak V p : The maximum voltage value is the positive peak value of the sampling voltage, and the formula is:

[0067] V p =Vmax (2).

[0068] The steps to determine the peak-to-peak voltage are:

[0069] 1. Collect data: During the sampling process, record the voltage value of each sampling point.

[0070] 2. Determine the maximum and minimum values: Find the maximum voltage (peak value) and the minimum voltage (valley value) among all recorded voltage values.

[0071] 3. Calculate the peak voltage V pp : Subtract the minimum voltage from the maximum voltage, and the result is the peak-to-peak voltage, which is expressed as:

[0072] V pp =V max -V min. (3).

[0073] The effective value of the vibration signal voltage, the positive peak value of the voltage, and the peak-to-peak value of the voltage are obtained through the above formulas (1), (2), and (3).

[0074] The vibration magnitude g is calculated using the following formula:

[0075]

[0076] The unit of vibration magnitude is g (g is the unit of gravitational acceleration), and the collected vibration signal (voltage signal) is converted into vibration magnitude by formula (4).

[0077] Wherein, V represents the collected voltage value.

[0078] Sensitivity is a parameter jointly determined by the acceleration sensor and the charge amplifier, which indicates the coefficient of converting acceleration into voltage, and the unit is mv / g. Different sensors and different charge amplifiers are used according to the situation. In this embodiment, the sensitivity is set to 100mv / g, that is, when the acceleration sensor senses an acceleration of 1g, the corresponding output voltage is 100mv.

[0079] In the sinusoidal mode vibration test, the vibration level is calculated as:

[0080]

[0081] In the random mode vibration test, the vibration level is calculated as:

[0082]

[0083] In the shock mode vibration test, the vibration level is calculated as follows:

[0084]

[0085] The vibration level monitoring system for the vibration table provided in this embodiment uses the graphical programming environment of LabVIEW to simplify the system development and debugging process; it provides an intuitive vibration data analysis and display, which is easy for users to understand and operate. Different alarm thresholds can be customized for different vibration tests, which improves the flexibility and safety of vibration monitoring.

[0086] In an optional embodiment, the vibration level monitoring system for the vibration table further includes an alarm module, the vibration table system includes a vibration table controller, and the alarm module and the vibration table controller are both connected to the data acquisition module; when the vibration level exceeds a preset threshold, the alarm module is automatically triggered, so that the alarm module sends an alarm signal, and the data acquisition module transmits the alarm signal to the vibration table controller, and the vibration table controller controls the vibration table to stop working. The vibration table controller is implemented by a PLC controller, and the alarm module uses an alarm light.

[0087] like Figure 2 As shown, the data acquisition module is connected to the vibration table body through an acceleration sensor to realize real-time acquisition of the vibration signal of the vibration table, and then transmits the collected vibration signal to the computer Lab VIEW software. The Lab VIEW software processes and analyzes the collected vibration signal, determines the current vibration magnitude, and displays it on the software display interface. When the collected vibration magnitude is greater than the preset threshold, the alarm module is automatically triggered, and the data acquisition module transmits the alarm signal to the vibration table controller (i.e., the vibration table system). After receiving the signal, the vibration table system controls the vibration table to stop working.

[0088] The following uses a vibration acceleration signal of 10g (g represents gravity acceleration, 10g represents 10 times gravity acceleration) as an example to illustrate the working process of the vibration level monitoring system for the vibration table:

[0089] Open Lab VIEW software, set the upper limit parameter of the vibration acceleration signal to 10g, select the sampling mode as sine mode and start the test. The data acquisition module collects the vibration acceleration signal of the vibration table in real time through the acceleration sensor, and the charge amplifier filters and amplifies the collected vibration acceleration signal to adapt to subsequent analysis. The conditioned vibration acceleration signal is transmitted to the analysis software of LabVIEW software, such as Figure 5 As shown, the current vibration level is 4.91g, which does not exceed 10g. The vibration level will continue to increase.

[0090] like Figure 6As shown in the figure, the current vibration magnitude after increase is 10.04g, and the vibration magnitude exceeds the preset threshold value of 10g. The alarm module is triggered and sends out an alarm signal. A dialog box pops up on the LabVIEW software display interface to remind the user. At the same time, the PLC control module receives the alarm signal, the vibration table system stops working, and the alarm light sends out an audible and visual alarm, prompting the user to take corresponding measures.

[0091] This embodiment provides a new vibration level monitoring system for a vibration table based on the prior art, which is innovative in particular in using LabVIEW software for data processing and analysis, multi-channel synchronous acquisition, and linkage protection system, making the detection system advantageous in terms of ease of operation, analysis accuracy, and rapid response.

[0092] According to an embodiment of the present invention, an embodiment of a vibration level monitoring method for a vibration table is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0093] In this embodiment, a vibration level monitoring method for a vibration table is provided, which can be used in the above-mentioned vibration level monitoring system for a vibration table. Figure 7 is a flow chart of a vibration level monitoring method for a vibration table according to an embodiment of the present invention. Figure 7 As shown, the process includes the following steps:

[0094] Step S701: A data acquisition module is used to collect vibration signals generated at different positions of the vibration table under different working conditions, and the vibration signals are transmitted to a vibration level monitoring module.

[0095] Specifically, the data acquisition module is connected to the vibration table body through the acceleration sensor to realize the real-time acquisition of the vibration acceleration signal of the vibration table. The charge amplifier filters and amplifies the collected vibration acceleration signal to adapt to subsequent analysis, and then transmits the conditioned vibration acceleration signal to the computer Lab VIEW software.

[0096] Step S702, controlling the vibration level monitoring module to determine the vibration level according to the vibration signal, automatically triggering an alarm signal when the vibration level exceeds a preset threshold, and transmitting the alarm signal to the vibration table, so that the vibration table stops working.

[0097] Specifically, Lab VIEW software processes and analyzes the collected vibration signals, determines the current vibration level, and displays it on the software display interface. When the collected vibration level is greater than the preset threshold, the alarm module is automatically triggered and an alarm signal is issued. The data acquisition module transmits the alarm signal to the vibration table controller, which controls the vibration table to stop working after receiving the signal.

[0098] The vibration level monitoring method for a vibration table provided in the present embodiment adopts a vibration level monitoring system for the vibration table, collects vibration signals generated by the vibration table through a data acquisition module, and transmits the vibration signals to the vibration level monitoring module, the vibration level monitoring module determines the vibration level according to the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold value, the data acquisition module transmits the alarm signal to the vibration table, so that the vibration table stops working, and the data acquisition module is installed on the vibration table to ensure synchronous measurement of vibration signals at different positions of a single vibration table or synchronous measurement of vibration signals of multiple vibration tables, real-time monitoring of the vibration state of the vibration table, rapid response to abnormal vibration, and avoidance of the vibration table being unable to shut down when the controller of the vibration table itself fails, thereby improving the safety and reliability of the vibration table, extending the service life of the vibration table, and solving the problem of insufficient monitoring of the monitoring system in the prior art.

[0099] In this embodiment, a vibration level monitoring device for a vibration table is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0100] This embodiment provides a vibration level monitoring device for a vibration table, which is used for example Figure 1 and Figure 2 The vibration level monitoring system for the vibration table shown in FIG. Figure 8 As shown, including:

[0101] A vibration signal acquisition module 801 is used to acquire the vibration signal generated by the vibration table using a data acquisition module, and transmit the vibration signal to a vibration level monitoring module;

[0102] The vibration level determination and comparison module 802 is used to control the vibration level monitoring module to determine the vibration level according to the vibration signal, automatically trigger an alarm signal when the vibration level exceeds a preset threshold, and control the data acquisition module to transmit the alarm signal to the vibration table, so that the vibration table stops working.

[0103] In an optional implementation, the vibration signal acquisition module 801 includes a data acquisition module, and the vibration level determination and comparison module 802 includes a vibration level monitoring module. The data acquisition module is used to collect vibration signals generated at different positions of the vibration table under different working conditions, and transmit the vibration signals to the vibration level monitoring module. The vibration level monitoring module determines the vibration level according to the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold. The data acquisition module transmits the alarm signal to the vibration table, causing the vibration table to stop working.

[0104] The data acquisition module includes at least one acceleration sensor, a charge amplifier and a data acquisition card connected in sequence. The vibration table is installed in the vibration table system, and the vibration table includes a vibration table body. When there is only one vibration table, at least one acceleration sensor is installed on the surface of the vibration table body, which is used to collect vibration signals of different positions of the single vibration table under different working conditions, and transmit the vibration signals to the charge amplifier. When there are at least two vibration tables, at least one acceleration sensor is installed on the surface of each vibration table body, which is used to collect vibration signals of different positions of each vibration table under different working conditions, and transmit the vibration signals to the charge amplifier; the vibration signal is a vibration acceleration signal, and the vibration signal is a vibration acceleration signal.

[0105] An acceleration sensor is a device that can measure an object. IEPE type sensors and PE type sensors are used. The acceleration sensor of this embodiment is preferably a PE type sensor to ensure high-precision and high-sensitivity measurement. At least one acceleration sensor is installed on the surface of the vibration table body to detect the vibration acceleration signal of the vibration table at different positions under different working conditions in real time.

[0106] The charge amplifier is used to amplify and denoise the vibration signal to obtain a vibration simulation signal, and transmit the vibration simulation signal to the data acquisition card; specifically, the vibration signal collected by the acceleration sensor first passes through the charge amplifier, which contains an amplification circuit and an anti-aliasing filter. While amplifying the vibration signal, it improves the signal-to-noise ratio of the signal and removes high-frequency noise to obtain a vibration simulation signal, thereby ensuring the reliability of the vibration signal.

[0107] The data acquisition card uses a multi-channel synchronous acquisition method to transmit the vibration simulation signal to the vibration level monitoring module. Specifically, the data acquisition card uses the NI-USB-6210 data acquisition card for data acquisition. The vibration simulation signal is transmitted to the vibration level monitoring module through the data acquisition card. The NI-USB-6210 data acquisition card is compatible with LabVIEW software and supports high-speed data transmission and multi-channel synchronous acquisition, which can ensure the synchronous measurement of vibration signals at different positions of a single vibration table or the synchronous measurement of vibration signals of multiple vibration tables.

[0108] The vibration level monitoring module includes a calculation unit and a display module; the calculation unit is used to determine the vibration level according to the vibration signal and display the vibration level on the display module. The display module is also used to display the waveform curve of the vibration signal, the positive peak value of the vibration signal voltage, the effective value of the vibration signal voltage and the peak-to-peak value of the vibration signal voltage.

[0109] The vibration level monitoring system for the vibration table also includes an alarm module. The vibration table system includes a vibration table controller. The alarm module and the vibration table controller are both connected to the data acquisition module. When the vibration level exceeds the preset threshold, the alarm module is automatically triggered, so that the alarm module sends an alarm signal. The data acquisition module transmits the alarm signal to the vibration table controller, and the vibration table controller controls the vibration table to stop working. The vibration table controller is implemented by a PLC controller, and the alarm module uses an alarm light.

[0110] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0111] The vibration level monitoring device for the vibration table in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0112] The embodiment of the present invention also provides a computer device having the above Figure 8 A vibration level monitoring device for a vibration table is shown.

[0113] See also Fig. 9 , Fig. 9 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Fig. 9 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Fig. 9 A processor 10 is taken as an example.

[0114] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0115] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0116] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0117] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0118] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Fig. 9 The example of connecting through bus is taken in the following.

[0119] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0120] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0121] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A vibration level monitoring system for a vibration table, characterized in that: The monitoring system includes: a data acquisition module and a vibration level monitoring module; The data acquisition module is installed on the vibration table and connected to the vibration level monitoring module; The data acquisition module is used to collect vibration signals generated by the vibration table at different positions under different working conditions, and transmit the vibration signals to the vibration level monitoring module. The vibration level monitoring module determines the vibration level based on the vibration signal, and automatically triggers an alarm signal when the vibration level exceeds a preset threshold. The data acquisition module transmits the alarm signal to the vibration table, causing the vibration table to stop working.

2. The monitoring system according to claim 1, characterized in that The data acquisition module includes at least one acceleration sensor, a charge amplifier and a data acquisition card connected in sequence, the vibration table is installed in a vibration table system, and the vibration table includes a vibration table body; When there is only one vibration table, the at least one acceleration sensor is mounted on the surface of the vibration table body, and is used to collect vibration signals at different positions of the single vibration table under different working conditions, and transmit the vibration signals to a charge amplifier; the vibration signal is a vibration acceleration signal; The charge amplifier is used to amplify and remove noise from the vibration signal to obtain a vibration analog signal, and transmit the vibration analog signal to a data acquisition card; The data acquisition card transmits the vibration simulation signal to the vibration level monitoring module using a multi-channel synchronous acquisition method.

3. The monitoring system according to claim 1, wherein: When there are at least two vibration tables, the at least one acceleration sensor is installed on the surface of each vibration table body, and is used to collect vibration signals of each vibration table at different positions under different working conditions, and transmit the vibration signals to a charge amplifier; the vibration signal is a vibration acceleration signal.

4. The monitoring system according to claim 1, wherein: The vibration level monitoring module includes a calculation unit and a display module; the calculation unit is used to determine the vibration level according to the vibration signal and display the vibration level on the display module.

5. The monitoring system according to claim 4, characterized in that: The display module is also used to display the waveform curve of the vibration signal, the positive peak value of the vibration signal voltage, the effective value of the vibration signal voltage and the peak-to-peak value of the vibration signal voltage.

6. The monitoring system according to claim 2, characterized in that The monitoring system further comprises an alarm module, the vibration table system comprises a vibration table controller, and both the alarm module and the vibration table controller are connected to the data acquisition module; When the vibration level exceeds a preset threshold, the alarm module is automatically triggered, causing the alarm module to send an alarm signal. The data acquisition module transmits the alarm signal to the vibration table controller, and the vibration table controller controls the vibration table to stop working.

7. A vibration level monitoring method for a vibration table, characterized in that: The vibration level monitoring system for a vibration table according to any one of claims 1 to 6, wherein the method comprises: The data acquisition module is used to collect vibration signals generated by the vibration table at different positions under different working conditions, and the vibration signals are transmitted to the vibration level monitoring module; The vibration level monitoring module is controlled to determine the vibration level according to the vibration signal, and an alarm signal is automatically triggered when the vibration level exceeds a preset threshold. The data acquisition module is controlled to transmit the alarm signal to the vibration table, so that the vibration table stops working.

8. A vibration level monitoring device for a vibration table, characterized in that: The vibration level monitoring system for a vibration table according to any one of claims 1 to 6, wherein the monitoring device comprises: a vibration signal acquisition module, configured to acquire the vibration signal generated by the vibration table using the data acquisition module, and transmit the vibration signal to a vibration level monitoring module; The vibration level determination and comparison module is used to control the vibration level monitoring module to determine the vibration level according to the vibration signal, automatically trigger an alarm signal when the vibration level exceeds a preset threshold, and control the data acquisition module to transmit the alarm signal to the vibration table, so that the vibration table stops working.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the vibration level monitoring method for a vibration table according to claim 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the vibration level monitoring method for a vibration table according to claim 7.

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