CN114509596A - Automatic detection method and device for equipment working voltage - Google Patents
Automatic detection method and device for equipment working voltage Download PDFInfo
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- CN114509596A CN114509596A CN202111659556.8A CN202111659556A CN114509596A CN 114509596 A CN114509596 A CN 114509596A CN 202111659556 A CN202111659556 A CN 202111659556A CN 114509596 A CN114509596 A CN 114509596A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention belongs to the technical field of voltage testing, and provides an automatic detection method and device for equipment working voltage, which comprises 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 to be detected 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. The invention has the advantages that the working voltage effective value, the peak value and the working frequency of the equipment are obtained by automatically processing the data acquired by the oscilloscope, and the automatic flow of the equipment working voltage test is realized.
Description
Technical Field
The invention relates to the technical field of voltage testing, in particular to an automatic detection method and device for equipment working voltage.
Background
The working voltage is a project which must be measured in the safety test of electronic products, and the measuring part is an element which is bridged on a primary circuit and a secondary circuit, such as a transformer, a capacitor, an optical coupler and the like which all need to be tested. During testing, the product works under a rated voltage, probes of an oscilloscope are respectively clamped on primary and secondary pins of the element, and each pin of the primary pin and each pin of the secondary pin of the element are tested.
The common working voltage test is to obtain test data by manually wiring and observing the waveform on an oscilloscope, the measurement process is complicated, and the time spent manually is too long.
Disclosure of Invention
The invention aims to provide an automatic detection method and device for equipment working voltage, which are used for solving the problems of automatic testing and data processing of the working voltage.
In order to achieve the purpose, the invention adopts the technical scheme that:
an automatic detection method for equipment working voltage comprises 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 to be detected 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.
Further, the step of detecting the working voltage of the device to be detected includes:
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.
Further, 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.
Further, 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 to obtain a frequency value of the waveform through the two benchmarks.
The invention also provides an automatic detection device for the working voltage of the equipment, which comprises:
an operating voltage detecting system in which the automatic detecting method of an operating voltage of an apparatus according to claim 1 is provided, the operating voltage detecting 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.
Further, the operating voltage detection system includes:
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;
and 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.
Further, 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 filtered waveform,
a frequency calculation unit for calculating a frequency value of the device by the waveform.
And the device connection state display module is used for displaying the connection state of each device in the device to a user through light.
Compared with the prior art, the invention at least comprises the following beneficial effects:
(1) according to the invention, the working voltage effective value, the peak value and the working frequency of the equipment are obtained by acquiring the working voltage waveform of the equipment through the oscilloscope and automatically processing the data acquired by the oscilloscope, so that the automatic process of testing the working voltage of the equipment is realized, and the detection data of the equipment does not need to be recorded in a mode of manually reading the oscilloscope.
(2) The device can automatically detect the working voltage value of the equipment, and can realize continuous detection of multiple pieces of equipment through the matching arrangement of the switch box and the system, thereby saving a large amount of time which originally needs manual operation.
Drawings
FIG. 1 is a flowchart illustrating an overall detection method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for detecting a working voltage of a device according to a first embodiment of the present invention;
FIG. 3 is a flow chart of processing data collected by an oscilloscope according to a first embodiment of the present invention;
FIG. 4 is a flow chart of calculating a frequency value of a device according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of an automatic detection apparatus according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a working voltage detection system according to a second embodiment of the present invention.
Detailed Description
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions of the present invention as related to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be fixedly connected, may be detachably connected, or may be integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of 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 drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, the method for automatically detecting the operating voltage of the device according to the present invention includes the steps of:
s1, acquiring oscilloscope parameters and switch channels selected by a user, and starting switches on the corresponding switch channels, wherein the switch channels are electrically connected with equipment;
s2, 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 S3, detecting the working voltage of the equipment to be detected according to the detection parameters set by the user, acquiring the detection data of the equipment through an oscilloscope, and displaying the test result on a preset interface.
As shown in fig. 2, the step of detecting the operating voltage of the device in step S3 includes:
a1, starting the corresponding power supply and equipment according to the power supply parameter setting and equipment parameter selected by the user;
a2, adjusting the working state of the equipment to a preset value;
and A3, adjusting the output voltage value of the power supply in real time and keeping the output voltage value in a stable state.
As shown in fig. 3, the step of processing the data collected by the oscilloscope includes:
b1, acquiring the working voltage waveform of the equipment through an oscilloscope;
b2, filtering the obtained waveform to remove high-frequency signals;
after obtaining the waveform, the existence of the high frequency signal or the interference of the reading process of the subsequent data, therefore, the waveform needs to be filtered, and the high frequency signal in the waveform can be removed after the waveform is subjected to the moving average filtering process with the window size of 10.
And B3, automatically reading the peak value and the effective value in the waveform according to the waveform after the filtering processing, calculating the frequency value of the waveform through the waveform, and storing the peak value, the effective value and the frequency value.
As shown in fig. 4, the step of calculating the frequency value of the device includes:
and B31, judging whether the waveform after the filtering processing is a periodic waveform, and if not, acquiring the working voltage waveform of the equipment again through the oscilloscope.
The process of judging whether the waveform is a periodic waveform is as follows: the waveform is subjected to fast fourier transform to obtain a main frequency F1, the number N1 of upper peaks of the waveform in unit time is calculated, and if the main frequency and the number of peaks are close in magnitude, the waveform is regarded as a periodic waveform. If the current waveform is not a periodic waveform, it indicates that the current voltage value is unstable, and the oscilloscope needs to acquire the operating voltage waveform of the device again.
B32, if yes, searching the high-level trigger position in each periodic waveform.
First, a value obtained by averaging the maximum value and the minimum value from the waveform peak value read previously is used as a threshold value by which the waveform is divided into upper and lower two partial waveforms, and then the average values of the two partial waveforms are calculated as high-level and low-level threshold values, respectively. Then, traversing the waveform from the starting point of the waveform, finding out points of two adjacent points which are respectively positioned below and above the high level threshold value as the trigger positions of the high level, and finally finding out all the high level trigger positions in the waveform.
And B33, taking the two closest high-level trigger positions as two benchmarks, and calculating the frequency value of the waveform through the two benchmarks.
Specifically, for example, the maximum value of the high-level trigger position is taken as one of the bars for measuring the frequency of the device, the length of one cycle waveform is calculated according to the current waveform number, then the approximate position M1 of the other bar is estimated, and the high-level trigger position closest to the point M1 is found from the estimated position, and is taken as the other bar, and the working frequency of the device is calculated through the distance between the two bars.
According to the invention, the working voltage waveform of the oscilloscope collecting equipment is used, and the data collected by the oscilloscope is processed by the method, so that the working voltage effective value, the peak value and the working frequency of the equipment are obtained, the automatic process of testing the working voltage of the equipment is realized, and the detection data of the equipment is not required to be recorded in a mode of manually reading the oscilloscope.
Example two
As shown in fig. 5, the automatic detection device for the operating voltage of the equipment of the present invention includes an operating 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 the automatic detection method of the working voltage of the equipment is arranged in the system. 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. The power supply is respectively connected with the computer and the equipment, and the system can directly set corresponding parameters of the power supply and control the working state of the power supply. The voltage output value of the power supply is transmitted to the system after being acquired through the data of the power meter, so that a user can know whether the power supply works in a stable state.
As shown in fig. 6, the operating voltage detection system includes: the device comprises a parameter setting module, a power parameter adjusting module, a detection module, a data processing module, a detection information display module and a device connection state display module.
The parameter setting module is used for setting the parameters of the oscilloscope, the switch channel and the detection parameters of the equipment. The parameter setting of the oscillograph is mainly to set which oscillograph and the channel of the oscillograph and the attenuation ratio of the oscillograph probe. The detection parameters of the device are mainly set for conditions such as the number of times and time of detection of the device.
The switch channel corresponds with the switch box, is provided with a plurality of wiring mouths on the switch box, and every wiring mouth is corresponding different switch channels, and the user needs the wiring mouth of select line connection before detecting for the system can prevent accident through switch box controlgear's operating condition. Moreover, when a plurality of devices need to be detected, the devices can be connected to different wiring ports on the switch box, and corresponding switch channels are arranged in the system, so that the continuous detection of the devices can be realized without manual operation in the middle.
The power supply parameter adjusting module is used for adjusting the output voltage value of the power supply in real time. The power supply parameter is used for monitoring a manual power supply real-time value, when the deviation of the power supply real-time value and the set value is larger than 1.5%, the system pops up a prompt window to prompt a user to adjust the power supply parameter, meanwhile, the test is stopped, and the test is started again until the user adjusts the power supply parameter to the deviation smaller than 1.5%.
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. When the user clicks the test start button, the detection module sends a corresponding control instruction, and the equipment is correspondingly detected according to the automatic detection method.
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.
Wherein the data processing module includes: the device comprises 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 and removing high-frequency signals in the waveform. And the data reading unit is used for automatically reading the peak value and the effective value in the waveform according to the waveform after the filtering processing. The frequency calculation unit is used for calculating the frequency value of the equipment through the waveform.
According to the invention, the data acquired by the oscilloscope are processed by the units, so that the working voltage effective value, the peak value and the working frequency of the equipment are obtained, the automatic process of the equipment working voltage test is realized, and the time spent by the test manpower is saved.
The detection information display module is used for displaying the test result data of the equipment, and a user can directly read the detection data through the detection information display module without manually calculating the detection data according to the waveform on the oscilloscope.
And the device connection state display module is used for displaying the connection state of each device in the device to a user through lamplight.
The user can learn the connection state between each device through the pilot lamp that sets up in this module, and the system just can open corresponding testing process under the intact state is all connected to all devices.
The device can automatically detect the working voltage value of the equipment, can realize continuous detection of multiple pieces of equipment through the matching arrangement of the switch box and the system, saves a large amount of time originally needing manual operation, and ensures the detection accuracy through automatic data processing of the system.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
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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| Application Number | Priority Date | Filing Date | Title |
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| CN202111659556.8A CN114509596A (en) | 2021-12-31 | 2021-12-31 | Automatic detection method and device for equipment working voltage |
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| CN202111659556.8A CN114509596A (en) | 2021-12-31 | 2021-12-31 | Automatic detection method and device for equipment working voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116312308A (en) * | 2023-04-27 | 2023-06-23 | 海的电子科技(苏州)有限公司 | Output voltage calibration method and device for shortening Bar and storage medium |
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2021
- 2021-12-31 CN CN202111659556.8A patent/CN114509596A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116312308A (en) * | 2023-04-27 | 2023-06-23 | 海的电子科技(苏州)有限公司 | Output voltage calibration method and device for shortening Bar and storage medium |
| CN116312308B (en) * | 2023-04-27 | 2023-10-13 | 海的电子科技(苏州)有限公司 | Output voltage calibration method and device for shortening Bar and storage medium |
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