CN114509596A - A kind of automatic detection method and device of equipment working voltage - Google Patents

Abstract

The invention belongs to the technical field of voltage testing, and provides an automatic detection method and device for the working voltage of equipment, comprising the steps of: acquiring parameters of an oscilloscope and a switch channel selected by a user, and starting a switch on a corresponding switch channel, the switch channel and the device Electrical connection; the detection parameters set by the user are obtained by the traversal method, and the detection parameters include power supply parameters, power meter parameters and equipment parameters; according to the detection parameters set by the user, the working voltage of the equipment to be tested is detected, and collected through an oscilloscope The detection data of the device is displayed on the preset interface. The advantage of the invention is that the effective value, peak value and working frequency of the working voltage of the equipment are obtained by automatically processing the data collected by the oscilloscope, thereby realizing the automatic process of testing the working voltage of the equipment.

Description

A kind of automatic detection method and device of equipment working voltage

technical field

The invention relates to the technical field of voltage testing, in particular to an automatic detection method and device for the working voltage of equipment.

Background technique

The working voltage is a must-tested item in the safety test of electronic products. The components that are connected to the primary and secondary circuits, such as transformers, capacitors, optocouplers, etc., need to be tested. During the test, the product works under the rated voltage, and the probes of the oscilloscope are respectively clamped on the primary and secondary pins of the component, and each primary pin of the component must be tested with each secondary pin.

The usual working voltage test is to manually connect the wires and obtain the test data by observing the waveform on the oscilloscope. The measurement process is cumbersome and complicated, and the manual time is too long.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic detection method and device for the working voltage of equipment to solve the problems of automatic testing of working voltage and data processing.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An automatic detection method for equipment working voltage, comprising the steps of:

Obtain the oscilloscope parameters and switch channel selected by the user, and activate the switch on the corresponding switch channel, and the switch channel is electrically connected to the device;

The detection parameters set by the user are obtained by the traversal method, and the detection parameters include power supply parameters, power meter parameters and parameters of equipment;

According to the detection parameters set by the user, the working voltage of the device to be tested is detected, the detection data of the device is collected through the oscilloscope, and the detection data is displayed on the preset interface.

Further, the step of detecting the working voltage of the device to be detected includes:

According to the power supply parameter settings and device parameters selected by the user, start the corresponding power supply and equipment;

Adjust the working state of the equipment to make it reach the preset value;

Adjust the output voltage value of the power supply in real time and keep it in a stable state.

Further, the steps of processing the data collected by the oscilloscope include:

Obtain the working voltage waveform of the equipment through the oscilloscope;

Filter the obtained waveform to remove the high frequency signal;

The peak value and effective value in the waveform are automatically read according to the filtered waveform, the frequency value of the waveform is calculated from the waveform, and the peak value, effective value and frequency value are stored.

Further, the step of calculating the frequency value of the device includes:

Determine whether the filtered waveform is a periodic waveform, if not, obtain the working voltage waveform of the device through the oscilloscope again;

If so, find the trigger position of the high level in each cycle waveform;

Take the two closest high-level trigger positions as two benchmarks, and calculate the frequency value of the waveform through the two benchmarks.

The invention also provides an automatic detection device for the working voltage of the equipment, including:

A working voltage detection system, wherein the automatic detection method of the equipment working voltage according to claim 1 is provided, and the working voltage detection system is installed in a computer;

Oscilloscope, one end of which is connected to the computer, and the other end is connected to the equipment through the switch box;

The power supply, which is connected to the computer and the device respectively, and sends the real-time voltage value to the computer through the power meter.

Further, the working voltage detection system includes:

The parameter setting module is used to set the oscilloscope parameters, switch channels and detection parameters of the equipment;

The power supply parameter adjustment module is used to adjust the output voltage value of the power supply in real time;

a detection module, which is used to test the working voltage of the equipment through the automatic detection method of the working voltage of the equipment;

The data processing module is used to process the detection data of the equipment collected by the oscilloscope, and obtain the peak value, effective value and frequency value of the equipment working voltage through calculation.

The test information display module is used to display the test result data of the device.

Further, the data processing module includes:

a waveform receiving unit, which is used for receiving the working voltage waveform of the equipment recorded in the oscilloscope;

a filtering unit, which is used for filtering the obtained waveform to remove high-frequency signals therein;

A data reading unit, which is used to automatically read the peak value and effective value in the waveform according to the filtered waveform,

A frequency calculation unit, which is used to calculate the frequency value of the device through the waveform.

Further, a device connection state display module is also included, which is used to display the connection state of each device in the device to the user through lights.

Compared with the prior art, the present invention at least includes the following beneficial effects:

(1) The present invention collects the working voltage waveform of the equipment through the oscilloscope, and automatically processes the data collected by the oscilloscope to obtain the effective value, peak value and working frequency of the working voltage of the equipment, and realizes the automatic process of testing the working voltage of the equipment. There is no need to manually read the oscilloscope to record the inspection data of the device.

(2) The present invention can automatically detect the working voltage value of the device through the device, and can realize the continuous detection of multiple devices through the matching setting of the switch box and the system, which saves a lot of time that originally required manual operation.

Description of drawings

Fig. 1 is the overall flow chart of the detection method in Embodiment 1 of the present invention;

FIG. 2 is a flowchart of working voltage detection for equipment in Embodiment 1 of the present invention;

3 is a flowchart of processing data collected by an oscilloscope in Embodiment 1 of the present invention;

Fig. 4 is the flow chart of calculating the frequency value of the device in Embodiment 1 of the present invention;

5 is a schematic structural diagram of an automatic detection device in Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of a working voltage detection system in Embodiment 2 of the present invention.

Detailed ways

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions such as "first", "second", "one", etc. in the present invention are only used for description purposes, and should not be interpreted as indicating or implying their relative importance or implicitly indicating the indicated technical features quantity. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "connected", "fixed" and the like should be understood in a broad sense, for example, "fixed" may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Example 1

As shown in FIG. 1, an automatic detection method of equipment operating voltage of the present invention includes the steps:

S1. Obtain the oscilloscope parameters and switch channel selected by the user, and activate the switch on the corresponding switch channel, and the switch channel is electrically connected to the device;

S2, obtaining the detection parameters set by the user through the traversal method, and the detection parameters include power supply parameters, power meter parameters and parameters of the equipment;

S3. Detect the working voltage of the device to be detected according to the detection parameters set by the user, collect the detection data of the device through the oscilloscope, and display the test result on the preset interface.

Wherein, as shown in FIG. 2 , the step of detecting the working voltage of the device in step S3 includes:

A1. Start the corresponding power supply and equipment according to the power supply parameter settings and equipment parameters selected by the user;

A2. Adjust the working state of the equipment to make it reach the preset value;

A3. Adjust the output voltage value of the power supply in real time and keep it in a stable state.

As shown in Figure 3, the steps of processing the data collected by the oscilloscope include:

B1. Obtain the working voltage waveform of the equipment through an oscilloscope;

B2. Filter the obtained waveform to remove the high frequency signal;

After the waveform is obtained, the presence of high-frequency signals may interfere with the subsequent data reading process, so the waveform needs to be filtered. .

B3. The peak value and the effective value in the waveform are automatically read according to the filtered waveform, and the frequency value of the waveform is calculated by the waveform and the peak value, the effective value and the frequency value are stored.

Wherein, as shown in Figure 4, the step of calculating the frequency value of the device includes:

B31. Determine whether the waveform after filtering is a periodic waveform, if not, obtain the working voltage waveform of the device through the oscilloscope again.

The process of judging whether it is a periodic waveform is: perform fast Fourier transform on the waveform to obtain the main frequency F1, and calculate the number N1 of upper peaks of the waveform in unit time. If the main frequency and the number of peaks are close, the waveform is identified as a periodic waveform . If the current waveform is not a periodic waveform, it means that the current voltage value is unstable, and it is necessary to obtain the working voltage waveform of the device again through the oscilloscope.

B32. If yes, find the trigger position of the high level in each cycle waveform.

First, according to the peak value of the waveform read before, the average value of the maximum value and the minimum value is used as the threshold value, and the waveform is divided into upper and lower parts by the threshold value, and then the average value of the two parts of the waveform is calculated separately, as the high voltage Thresholds for flat and low levels. Then traverse the waveform from the starting point of the waveform, find two adjacent points below and above the high-level threshold, as the high-level trigger position, and finally find all the high-level trigger positions in the waveform.

B33. Use the two closest high-level trigger positions as two benchmarks, and calculate the frequency value of the waveform through the two benchmarks.

Specifically, for example, take the maximum value of the high-level trigger position as one of the benchmarks for measuring the frequency of the equipment, calculate the length of a periodic waveform according to the current number of waveforms, and then estimate the approximate position M1 of the other benchmark, and find the The closest high-level trigger position of point M1 is used as another benchmark, and the operating frequency of the device is calculated by the distance between the two benchmarks.

The invention collects the working voltage waveform of the equipment through the oscilloscope, and processes the data collected by the oscilloscope through the above method to obtain the effective value, peak value and working frequency of the working voltage of the equipment, and realizes the automatic process of testing the working voltage of the equipment without manual labor. Record the inspection data of the device by reading the oscilloscope.

Embodiment 2

As shown in FIG. 5 , an automatic detection device of equipment working voltage of the present invention includes a working voltage detection system, a power meter, a power supply, an oscilloscope and a switch box.

The working voltage detection system is installed in a computer, and is provided with the above-mentioned automatic detection method of the working voltage of the equipment. One end of the oscilloscope is connected to the computer, and the other end is connected to the equipment through the switch box. The power supply is respectively connected with the computer and the equipment, and the system can directly set the corresponding parameters of the power supply and control the working state of the power supply. The voltage output value of the power supply is sent to the system through the data collection of the power meter, so that the user can know whether the power supply is working in a stable state.

Among them, as shown in FIG. 6 , the working voltage detection system includes: a parameter setting module, a power parameter adjustment module, a detection module, a data processing module, a detection information display module and a device connection status display module.

The parameter setting module is used to set the oscilloscope parameters, switch channels and detection parameters of the device. The parameter setting of the oscilloscope is mainly to set which oscilloscope and the channel of the oscilloscope and the attenuation ratio of the oscilloscope probe. The detection parameters of the equipment are mainly to set the conditions such as the number and time of the equipment detection.

The switch channel corresponds to the switch box. There are multiple wiring ports on the switch box. Each wiring port corresponds to a different switch channel. The box controls the working state of the equipment to prevent accidents. Moreover, when there are multiple devices that need to be detected, the devices can be connected to different wiring ports on the switch box, and the corresponding switch channels can be set in the system, so that continuous detection of devices can be realized without the need for intermediate manual operation.

The power supply parameter adjustment module is used to adjust the output voltage value of the power supply in real time. Among them, the power supply parameters are used to monitor the real-time value of the manual power supply. When the deviation between the real-time power supply value and the set value is greater than 1.5%, the system will pop up a prompt window to prompt the user to adjust the power supply parameters. Within 1.5%, the test starts again.

The detection module is used to test the working voltage of the equipment through the automatic detection method of the working voltage of the equipment. When the user clicks the test start button, the detection module will send a corresponding control command, and perform corresponding detection on the device according to the above-mentioned automatic detection method.

The data processing module is used to process the detection data of the equipment collected by the oscilloscope, and obtain the peak value, effective value and frequency value of the equipment operating voltage through calculation.

The data processing module includes: a waveform receiving unit, a filtering unit, a data reading unit and a frequency calculating unit.

The waveform receiving unit is used for receiving the working voltage waveform of the equipment recorded in the oscilloscope. The filtering unit is used for filtering the obtained waveform to remove high frequency signals. The data reading unit is used to automatically read the peak value and effective value of the waveform according to the filtered waveform. The frequency calculation unit is used to calculate the frequency value of the device through the waveform.

The present invention processes the data collected by the oscilloscope through the above-mentioned unit, obtains the effective value, peak value and operating frequency of the working voltage of the equipment, realizes the automatic process of the working voltage test of the equipment, and saves the time spent by the labor of the test.

The test information display module is used to display the test result data of the device. The user can directly read the test data through this module, without the need to manually calculate the test data according to the waveform on the oscilloscope.

The device connection state display module is used to display the connection state of each device in the device to the user through lights.

The user can know the connection status between each device through the indicator lights set in this module, and the system will start the corresponding detection process only when all the devices are well connected.

The invention can automatically detect the working voltage value of the equipment through the device, and can realize the continuous detection of multiple devices through the matching setting of the switch box and the system, save a lot of time that originally required manual operation, and automatically process the data through the system. , to ensure the accuracy of detection.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (8)

1. An automatic detection method for equipment working voltage is characterized by comprising the following steps:

acquiring oscilloscope parameters and a switch channel selected by a user, and starting a switch on the corresponding switch channel, wherein the switch channel is electrically connected with equipment;

acquiring detection parameters set by a user through a traversal method, wherein the detection parameters comprise power supply parameters, power meter parameters and equipment parameters;

and detecting the working voltage of the equipment according to the detection parameters set by the user, acquiring the detection data of the equipment through the oscilloscope, and displaying the detection data on a preset interface.

2. The method according to claim 1, wherein the step of detecting the operating voltage of the device to be detected comprises:

starting the corresponding power supply and equipment according to the power supply parameter setting and equipment parameter selected by the user;

adjusting the working state of the equipment to reach a preset value;

and adjusting the output voltage value of the power supply in real time and keeping the output voltage value in a stable state.

3. The method of claim 1, wherein the step of processing the data collected by the oscilloscope comprises:

acquiring the working voltage waveform of the equipment through an oscilloscope;

filtering the obtained waveform to remove high-frequency signals in the waveform;

and automatically reading a peak value and an effective value in the waveform according to the waveform after filtering, calculating a frequency value of the waveform through the waveform, and storing the peak value, the effective value and the frequency value.

4. The method of claim 3, wherein the step of calculating the frequency value of the device comprises:

judging whether the waveform after filtering is a periodic waveform or not, and if not, acquiring the working voltage waveform of the equipment again through the oscilloscope;

if yes, searching a high-level trigger position in each periodic waveform;

and taking the two closest high-level trigger positions as two benchmarks, and calculating by using the two benchmarks to obtain the frequency value of the waveform.

5. An automatic detection device for equipment working voltage is characterized by comprising:

an operating voltage detection system in which the automatic detection method of an operating voltage of the apparatus according to claim 1 is provided, the operating voltage detection system being installed in a computer;

one end of the oscilloscope is connected with the computer, and the other end of the oscilloscope is connected with the equipment through the switch box;

and the power supply is respectively connected with the computer and the equipment and sends the real-time voltage value to the computer through the power meter.

6. The apparatus according to claim 5, wherein the operating voltage detecting system comprises:

the parameter setting module is used for setting the oscilloscope parameters, the switch channel and the detection parameters of the equipment;

the power supply parameter adjusting module is used for adjusting the output voltage value of the power supply in real time;

the detection module is used for testing the working voltage of the equipment by an automatic detection method of the working voltage of the equipment;

the data processing module is used for processing the detection data of the equipment acquired by the oscilloscope and obtaining the peak value, the effective value and the frequency value of the working voltage of the equipment through calculation;

and the detection information display module is used for displaying the test result data of the equipment.

7. The apparatus according to claim 6, wherein the data processing module comprises:

the waveform receiving unit is used for receiving the working voltage waveform of the equipment recorded in the oscilloscope;

the filtering unit is used for carrying out filtering processing on the obtained waveform and removing a high-frequency signal in the waveform;

a data reading unit for automatically reading a peak value and an effective value in the waveform according to the waveform after the filtering process,

a frequency calculation unit for calculating a frequency value of the device by the waveform.

8. The device according to claim 6, further comprising a device connection status display module for displaying the connection status of each device in the device to a user through a light.

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