CN117686139B - Pressure detection accuracy detection system and detection method of pressure sensor - Google Patents
Pressure detection accuracy detection system and detection method of pressure sensor Download PDFInfo
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Abstract
The invention discloses a pressure detection accuracy detection system and a pressure detection method of a pressure sensor, wherein the system comprises the following components: the detection box is provided with an air inlet and an air outlet with valves and a mounting port for mounting a pressure sensor to be detected; the pressure regulating device is communicated with the detection box through the air inlet and is used for increasing or reducing the pressure in the detection box; the standard pressure sensor is arranged in the detection box and is used for monitoring the air pressure in the detection box to obtain the real air pressure in the detection box; a data processing module; for issuing control signals; the data acquisition module is used for acquiring data detected by the standard pressure sensor and the pressure sensor to be detected; and the control module is respectively and electrically connected with the valve and the pressure regulating device so as to control the valve or the pressure regulating device. The invention solves the problem of low efficiency in the pressure detection of the pressure sensor in the prior art.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to a pressure detection accuracy detection system and a pressure detection method of a pressure sensor.
Background
A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal to a usable output electrical signal according to a certain rule, and is typically composed of a pressure sensitive element and a signal processing unit. In order to ensure the accuracy of pressure detection of the pressure sensor, the accuracy of pressure detection of the pressure sensor can be detected before the pressure sensor leaves a factory or is put into use, so that the accuracy of monitoring the pressure of the pressure sensor in subsequent use is ensured.
Currently, in the related field of pressure sensor inspection, most of the existing pressure sensor inspection technologies are implemented based on manual work, and the output of a pressure sensor to be detected and a standard pressure gauge are respectively placed in the same pressure environment by manual work, and whether the pressure sensor to be detected is qualified or not is determined by comparing whether the error between the output of the pressure sensor to be detected and the output of the standard pressure gauge is in an acceptable range or not.
Therefore, the current pressure sensor mainly relies on manual inspection to have low intelligent degree and low efficiency, and cannot meet the increasing inspection requirements.
Disclosure of Invention
In view of the above, the present invention aims to provide a pressure detection accuracy detection system and a pressure detection method for a pressure sensor, which aims to solve the problems that the detection mode of the pressure sensor in the prior art is low in intelligentization degree and low in efficiency, and cannot meet the increasing detection requirements.
The embodiment of the invention is realized as follows:
A system for detecting pressure detection accuracy of a pressure sensor, the system comprising:
the detection box is provided with a sealed space, and is provided with an air inlet and an air outlet with valves and a mounting port for mounting a pressure sensor to be detected;
The pressure regulating device is communicated with the detection box through the air inlet and is used for increasing or decreasing the pressure in the detection box;
The standard pressure sensor is arranged in the detection box and is used for monitoring the air pressure in the detection box to obtain the real air pressure in the detection box;
A data processing module; for issuing control signals;
a data acquisition module; the system is in telecommunication connection with the standard pressure sensor and the pressure sensor to be detected respectively so as to collect data detected by the standard pressure sensor and the pressure sensor to be detected;
The control module is respectively and electrically connected with the valve and the pressure regulating device so as to control the valve or the pressure regulating device;
The data acquisition module and the control module are respectively in telecommunication connection with the data processing module, so that after the control signals are received, the corresponding control is carried out on the valve and the pressure regulating device, and then the pressure data detected by the corresponding standard pressure sensor and the pressure sensor to be detected are acquired.
Further, in the pressure detection accuracy detection system of the pressure sensor, the air inlet and the air outlet are respectively arranged on two opposite sides of the detection box, and the mounting port is arranged on different sides of the air inlet and the air outlet on the detection box.
Further, the pressure detection accuracy detection system of the pressure sensor comprises a booster pump and a vacuum pump, wherein the booster pump and the vacuum pump are respectively communicated with the detection box through the air inlet.
Further, the system for detecting the pressure detection accuracy of the pressure sensor further comprises an atmospheric pressure sensor arranged outside the detection box, and the atmospheric pressure sensor is in communication connection with the data acquisition module.
Another object of the present invention is to provide a method for detecting pressure detection accuracy of a pressure sensor, for detecting the pressure sensor by the above-mentioned pressure detection accuracy detection system, the method comprising:
Acquiring a pressure detection point value received by a data processing module, and sending a control signal to a pressure adjusting device through a control module so as to adjust the pressure of a detection box to a preset range of the pressure detection point value through the pressure adjusting device;
respectively acquiring standard pressure data and pressure data to be detected by a standard pressure sensor and a pressure sensor to be detected by a data acquisition module;
And respectively collecting a plurality of groups of standard pressure data and detection pressure data under different pressure detection point values so as to detect the pressure detection performance of the pressure sensor to be detected.
Further, in the method for detecting the accuracy of pressure detection of a pressure sensor, the step of acquiring the pressure detection point value received by the data processing module and sending a control signal to the pressure adjusting device through the control module so as to adjust the pressure of the detection box to a preset range of the pressure detection point value through the pressure adjusting device includes:
when the pressure type selected to be processed by the data processing module is gauge pressure, controlling a booster pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated;
and when the pressure type selected to be processed by the data processing module is absolute pressure, controlling a vacuum pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated.
Further, the method for detecting the pressure detection accuracy of the pressure sensor, wherein the method further comprises the following steps:
Collecting a plurality of groups of standard pressure data and detection pressure data, and determining errors between each group of standard pressure data and detection pressure data;
And determining a correction formula of the pressure sensor to be detected according to the error of each group, and correcting the pressure detected by the pressure sensor to be detected according to the correction formula.
Further, the method for detecting the pressure detection accuracy of the pressure sensor, wherein the method further comprises the following steps:
and obtaining detection data in the detection process, and encrypting and storing the detection data according to a preset rule.
Further, the method for detecting the pressure detection accuracy of the pressure sensor, wherein the step of obtaining the detection data in the detection process and encrypting and storing the detection data according to a preset rule comprises the following steps:
Acquiring the model number, the pressure type, the encrypted detection pressure point value and the corresponding error value of the pressure sensor to be detected in the detection data of the same batch;
Acquiring a code mapped by the pressure type, and determining a basic encryption chain according to the pressure sensor model, the code, an encryption detection pressure point value and a corresponding error value;
performing hash calculation chain extension on the basic encryption chain to obtain a corresponding encryption chain body;
and randomly replacing encryption elements in the basic encryption chain and the encryption chain body to obtain a target encryption chain, and encrypting the detection data of the same batch through the target encryption chain.
Further, the method for detecting the pressure detection accuracy of the pressure sensor, wherein the method further comprises the following steps:
Acquiring a plurality of detection pressure point values and corresponding error values in the detection data of the same batch;
And periodically determining the encrypted detection pressure point values and the corresponding error values of the detection data in different batches according to the order of the detection pressure point values.
According to the invention, a pressure environment is provided by arranging the detection box with a sealed space, and the detection box is respectively provided with an air inlet and an air outlet with a valve and a mounting port for mounting a pressure sensor to be detected; the pressure regulating device is communicated with the detection box through the air inlet and is used for increasing or reducing the pressure in the detection box; the standard pressure sensor is arranged in the detection box and is used for monitoring the air pressure in the detection box to obtain the real air pressure in the detection box; a data processing module; for issuing control signals; a data acquisition module; the system is in telecommunication connection with the standard pressure sensor and the pressure sensor to be detected respectively so as to collect data detected by the standard pressure sensor and the pressure sensor to be detected; the control module is respectively and electrically connected with the valve and the pressure regulating device so as to control the valve or the pressure regulating device; the data acquisition module and the control module are respectively in telecommunication connection with the data processing module, so that after control signals are received, corresponding standard pressure sensors and pressure data detected by the pressure sensors to be detected are acquired after corresponding control is carried out on the valve and the pressure regulating device, detection of detection performance of the pressure sensors is realized, and due to the adoption of intelligent detection, the efficiency is greatly improved, and the problems of low intelligent degree and low efficiency in the detection of the pressure sensors in the prior art are solved.
Drawings
FIG. 1 is a schematic diagram of a pressure detection accuracy detecting system of a pressure sensor according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the operation of a system for detecting the accuracy of pressure detection of a pressure sensor according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for detecting accuracy of pressure detection of a pressure sensor according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating one implementation of a method for detecting accuracy of pressure detection of a pressure sensor according to an embodiment of the present invention.
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
How to improve the degree of intellectualization and efficiency in the detection of a pressure sensor will be described in detail below in connection with specific embodiments and accompanying drawings.
Example 1
Referring to fig. 1, a system for detecting accuracy of pressure detection of a pressure sensor in a first embodiment of the present invention is shown, the system includes a detection box 2, a pressure adjusting device for adjusting the pressure of the detection box 2, a data processing module 15, a control module 9, and a data acquisition module 10, wherein:
The detection box 2 is internally provided with a sealing space, two opposite sides on the detection box 2 are respectively provided with an air inlet and an air outlet, the air inlet is used for inputting a pressure environment through corresponding equipment, so that the pressure environment in the detection box 2 is guaranteed to meet the pressure requirement during detection, the air outlet is used for pressure relief after detection is completed or in the detection process, the pressure in the detection box 2 is balanced through opening or closing, and in particular implementation, the air inlet and the air outlet are conveniently controlled, and the corresponding air inlet valve 3 and the corresponding air outlet valve 1 are respectively arranged on the air inlet and the air outlet.
The pressure adjusting device is used for adjusting the pressure environment in the detection box 2, wherein the pressure environment is communicated with the detection box 2 through the air inlet, so that the pressure in the detection box 2 is adjusted, the detection box 2 comprises a booster pump 4 and a vacuum pump 5, and the pressure environment in the detection box 2 is adjusted by opening and closing the booster pump 4 or the vacuum pump 5.
In addition, in order to realize detecting the pressure sensor, the pressure value detected by the standard pressure sensor 7 and the pressure value detected by the pressure sensor to be detected are compared, so that whether the pressure detection capability of the pressure sensor is qualified can be determined, wherein the standard pressure sensor 7 is a pressure sensor with qualified pressure detection performance and belongs to the same type of pressure sensor as the pressure sensor to be detected, and when the pressure sensor is specifically implemented, the pressure sensor with the same type as the pressure sensor to be detected can be delivered to a third party for detection, so that the standard pressure sensor 7 is determined to be in accordance with the standard and is used for being installed on the detection box 2.
Specifically, a plurality of mounting ports 6 are arranged in the sealing box, one of the mounting ports 6 is used for mounting a standard pressure sensor 7, so that the accurate numerical value in the current detection box 2 can be obtained, the other mounting ports 6 are all used for mounting the pressure sensor to be detected, the pressure sensor to be detected can also detect the pressure in the detection box 2, the pressure value detected by the standard pressure sensor can be compared, the pressure detection performance of the pressure sensor can be detected according to whether errors or not or the amount of errors are generated, and the system can also detect the pressure detection performance of the plurality of pressure sensors simultaneously because the mounting ports 6 can be arranged in a plurality of.
Further, in order to realize automatic detection of the system, the data acquisition module 10 arranged in the system is electrically connected with the pressure sensor to be detected respectively to realize data acquisition, the control module 9 is electrically connected with the booster pump 4, the vacuum pump 5, the air inlet valve 3 and the air outlet valve 1 of the pressure regulating device respectively, so that the booster pump 4, the vacuum pump 5, the air inlet valve 3 and the air outlet valve 1 are opened or closed, the data acquisition module 10 and the control module 9 can be electrically connected with the data processing module 15 respectively, so that corresponding instructions can be issued to the data acquisition module 10 and the control module 9 through the data processing module 15 or corresponding generated data can be received.
In addition, in some optional embodiments of the present invention, an atmospheric pressure sensor 8 may be further provided to be in telecommunication connection with the data acquisition module 10, and the atmospheric pressure sensor 8 is used to acquire atmospheric pressure data in real time, so as to monitor the atmospheric pressure environment, thereby determining whether the atmospheric pressure of the data acquired each time is consistent, and improving the accuracy of data analysis.
It should be noted that, the data acquisition module, the control module and the communication module are all understood by those skilled in the art, and are not described herein, for example, the data processing module may be connected with the data acquisition module through a corresponding serial port.
In addition, when the invention is embodied, the system also comprises a power supply 13, +24V wiring row 12 and GND wiring row 11, so as to realize the power supply of the system.
In addition, in order to describe the specific implementation process of the embodiment of the present invention in further detail, as shown in fig. 2, the booster pump 4 and the vacuum pump 5 regulate the pressure in the detection box 2 (sensor installation box) after the air inlet valve 3 is opened, the pressure sensor to be detected and the standard pressure sensor 7 detect the pressure in the detection box 2at the same time to obtain corresponding detection values, and after the detection is completed, the exhaust valve 1 can be opened to release pressure, and when the control is performed, an electrical signal containing a control instruction is sent to the data acquisition module 10 and the control model respectively, so as to control the corresponding sensors to detect the pressure, and the corresponding booster pump 4 and the vacuum pump 5 work or the corresponding air inlet valve 3 and the exhaust valve 1 are opened or closed.
In summary, in the system for detecting the accuracy of pressure detection of the pressure sensor according to the above embodiment of the present invention, a pressure environment is provided by providing a detection box 2 having a sealed space, and the detection box 2 is provided with an air inlet and an air outlet having valves, and an installation port 6 for installing the pressure sensor to be detected, respectively; the pressure regulating device is communicated with the detection box 2 through an air inlet and is used for increasing or reducing the pressure in the detection box 2; the standard pressure sensor 7 is arranged in the detection box 2 and is used for monitoring the air pressure in the detection box 2 to obtain the real air pressure in the detection box 2; a data processing module 15; for issuing control signals; a data acquisition module 10; the system is in telecommunication connection with the standard pressure sensor 7 and the pressure sensor to be detected respectively so as to collect data detected by the standard pressure sensor 7 and the pressure sensor to be detected; the control module 9 is respectively and electrically connected with the valve and the pressure regulating device to control the valve or the pressure regulating device; the data acquisition module 10 and the control module 9 are respectively in telecommunication connection with the data processing module 15, so that after receiving control signals, the corresponding standard pressure sensor 7 and pressure data detected by the pressure sensor to be detected are acquired after corresponding control is carried out on the valve and the pressure regulating device, the detection of the detection performance of the pressure sensor is realized, and the efficiency is greatly improved due to the adopted intelligent detection, so that the problems of low intelligent degree and low efficiency in the detection of the pressure sensor in the prior art are solved.
Example two
Referring to fig. 3, a method for detecting pressure detection accuracy of a pressure sensor according to a second embodiment of the present invention is provided, and the method is used for detecting pressure detection performance of the pressure sensor by the system for detecting pressure detection accuracy of the pressure sensor according to the first embodiment, and includes steps S10 to S12.
Step S10, a pressure detection point value received by the data processing module is obtained, and a control signal is sent to a pressure adjusting device through a control module, so that the pressure of the detection box is adjusted to a preset range of the pressure detection point value through the pressure adjusting device.
After equipment is installed, the pressure sensor to be detected is installed on the detection box, the other end of the pressure sensor is connected with a cable for detection connected with the data acquisition module, the outlets of the booster pump and the vacuum pump are respectively connected with the air inlet of the detection box through hoses, the air outlet of the detection box is connected with the inlet of the exhaust valve through hoses, the connection part is fastened during connection, and air leakage of the connection part is prevented.
After the preparation work is finished, the system is electrified, the data processing module starts to control the system to carry out detection work, specifically, in order to ensure the accuracy of detection results, a plurality of groups of detection pressure data are compared according to different pressure point values, wherein the range of the detection pressure data is obtained according to the model of the pressure sensor to be detected, then the detection pressure points are selected according to the range, for example, the range of the pressure sensor is 0-250kPa, and the pressure data detected under the pressures of 20kPa, 50kPa, 100kPa, 150 kPa, 200kPa and 250kPa are respectively selected to carry out judgment on the pressure detection performance of the pressure sensor.
Specifically, a control signal is sent to the pressure adjusting device through the control module, so that the pressure of the detection box is adjusted to a preset range of a pressure value to be detected through the pressure adjusting device, wherein an error between the pressure detected by the standard pressure sensor and the pressure received by the data processing module can be allowed to be within a certain controllable range, for example, +/-5 kPa.
Step S11, standard pressure data and pressure data to be detected by the standard pressure sensor and the pressure sensor to be detected are respectively acquired through a data acquisition module.
After the pressure data acquisition conditions are met, standard pressure data and pressure data to be detected, which are detected by the standard pressure sensor and the pressure sensor to be detected, are acquired respectively through the data acquisition module.
In addition, in some optional embodiments of the present invention, before the pressure detection is performed, the booster pump is controlled to be turned on, the pressure in the detection box is raised, after the pressure in the detection box is kept for a certain time with preset data, the self-detection of the tightness in the detection box is realized, and then the pressure detection is performed, so that the accuracy of the detection is ensured.
And step S12, respectively collecting a plurality of groups of standard pressure data and detection pressure data under the condition of different pressure detection point values so as to detect the pressure detection performance of the pressure sensor to be detected.
And carrying out a plurality of groups of experiments, and collecting a plurality of groups of standard pressure data and pressure data to be detected under the condition of different pressure test point values so as to detect the pressure sensor to be detected, wherein whether the pressure sensor to be detected is qualified or not can be determined by errors between the standard pressure data and the pressure data to be detected in the plurality of groups of tests.
More specifically, the step of acquiring the pressure detection point value received by the data processing module and sending a control signal to the pressure adjusting device through the control module so as to adjust the pressure of the detection box to a preset range of the pressure detection point value through the pressure adjusting device includes:
when the pressure type selected to be processed by the data processing module is gauge pressure, controlling a booster pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated;
and when the pressure type selected to be processed by the data processing module is absolute pressure, controlling a vacuum pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated.
The pressure type of the detection is determined to be gauge pressure or absolute pressure, the pressure type of the data processing module is selected to be gauge pressure, a booster pump in the pressure regulating device is controlled to be started, the pressure in the detection box reaches the preset range of the pressure value to be detected, the pressure type of the data processing module is selected to be absolute pressure, a vacuum pump in the pressure regulating device is controlled to be started, and the pressure in the detection box reaches the preset range of the pressure value to be detected.
Additionally, in some alternative embodiments of the invention, the method further comprises:
Collecting a plurality of groups of standard pressure data and detection pressure data, and determining errors between each group of standard pressure data and detection pressure data;
And determining a correction formula of the pressure sensor to be detected according to the error of each group, and correcting the pressure detected by the pressure sensor to be detected according to the correction formula.
In the process of checking the sensor for multiple times, the error of the sensor is found to show a certain function relation, the function is used as a correction formula to correct the feedback parameter of the sensor, so that the error can meet the use requirement, and specifically, the upper computer checks the original data of the detection for multiple times to form a correction formula, and the upper computer uses the correction formula to correct the corresponding pressure sensor.
In addition, software can be run again, after the detection is completed, the corrected detection data is checked, whether the pressure sensor is qualified or not is judged, wherein the non-conforming pressure sensor to be detected is corrected, and the corrected pressure sensor to be detected is subjected to qualification detection again.
In order to further describe the implementation process of the present invention in detail, as shown in fig. 4, an exemplary embodiment of the present invention is a specific implementation process, where the upper computer firstly sends a control instruction to the control module to control the booster pump to work, pressurizes the inside of the detection box, and implements self-detection of the tightness of the detection box.
The intelligent detection of the pressure sensor is realized through the system, a large amount of detection data can be collected by the set data processing module, the detection data can be stored in the database and can be checked by a tester later, and in practice, the data are reasonably classified and safely stored.
In some optional embodiments of the invention, the method further comprises:
and obtaining detection data in the detection process, and encrypting and storing the detection data according to a preset rule. Specifically, the model number, the pressure type, the encrypted detection pressure point value and the corresponding error value of the pressure sensor to be detected in the detection data of the same batch are obtained;
Acquiring a code mapped by the pressure type, and determining a basic encryption chain according to the pressure sensor model, the code, an encryption detection pressure point value and a corresponding error value;
performing hash calculation chain extension on the basic encryption chain to obtain a corresponding encryption chain body;
and randomly replacing encryption elements in the basic encryption chain and the encryption chain body to obtain a target encryption chain, and encrypting the detection data of the same batch through the target encryption chain.
In this embodiment, the detection data generated by the plurality of pressure sensors may be used as detection data of the same batch, and in some optional embodiments of the present invention, the detection data generated by the same type of pressure sensor in a certain time period may also be used as detection data of the same batch, where the detection data includes at least a model number of the detected pressure sensor, an identity of each pressure sensor, a standard pressure value generated by the detection of each corresponding pressure sensor, but not limited to, a standard pressure value under a plurality of groups of detection pressure points, a selected pressure type, a pressure value detected by the sensor to be detected, and a corresponding error data.
Further, a pressure sensor model, a pressure type, a detection pressure point value for encryption and a corresponding error value are extracted from detection data, wherein the pressure sensor model can adopt model codes when leaving factories and mainly consists of numbers and letters, the pressure type is gauge pressure or absolute pressure, corresponding codons can be configured for different pressure types and used for encryption, for example, the corresponding codons of the gauge pressure are K, the corresponding codons of the absolute pressure are A, the pressure sensor model, the codons, the encryption detection pressure point value and the corresponding error value can be sequentially arranged to obtain a basic encryption chain, for example, the pressure sensor model is JXT101, the pressure type is gauge pressure, the encryption detection pressure point value and the corresponding error value are respectively 20 and 5, the corresponding obtained basic encryption chain is JXT101K205, the basic encryption chain is subjected to hash calculation to expand the length of the encryption chain to obtain an encryption chain body, for example, the basic encryption chain is subjected to hash operation by using an md5 algorithm to obtain a basic encryption chain body 43488 b 84 e91051 c 8756266; further, the basic encryption chain may be used to replace the chain bit in the encryption chain body to obtain a target encryption chain, for example, the basic encryption chain is used to replace the chain bit in the encryption chain body to obtain a target encryption chain "ebJ Xb05aT8414e9015K ed2c8250256", and then the target encryption chain is used to encrypt the detection data of the same batch.
Furthermore, in some alternative embodiments of the present invention, the replaced chain bit may be used as a head of the target encryption chain, so as to further improve the security strength of the encryption chain, and obtain the target encryption chain "b8fb11 76-ebJ Xb05aT8414e 9015K ed2c8250256".
In addition, since the detection data of the same batch will contain various detection pressure point values and corresponding errors, the detection pressure point values and the corresponding errors can be used as encryption detection pressure point values and corresponding errors through the periodicity of the detection pressure point values, for example, 20 is used as the detection pressure point value in the first batch, 50 is used as the detection pressure point value in the next batch, and so on.
In summary, in the pressure detection accuracy detection method of the pressure sensor according to the above embodiment of the present invention, the pressure detection point value received by the data processing module is obtained, and a control signal is sent to the pressure adjusting device by the control module, so that the pressure of the detection box is adjusted to the preset range of the pressure detection point value by the pressure adjusting device; respectively acquiring standard pressure data and pressure data to be detected by a standard pressure sensor and a pressure sensor to be detected by a data acquisition module; and under the condition of different pressure detection point values, a plurality of groups of standard pressure data and detection pressure data are acquired so as to detect the pressure detection performance of the pressure sensor to be detected, thereby realizing the intelligent detection of the pressure sensor and improving the detection efficiency. The intelligent pressure sensor detection device solves the problems of low intelligent degree and low efficiency in the detection of the pressure sensor in the prior art.
The technical features of the above embodiments may be arbitrarily combined, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, they should be considered as the scope of the description of the present specification as long as there is no contradiction between the combinations of the technical features.
Those of skill in the art will appreciate that the logic and/or steps represented in the flow diagrams or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A method for detecting pressure detection accuracy of a pressure sensor, the method comprising:
Acquiring a pressure detection point value received by a data processing module, and sending a control signal to a pressure adjusting device through a control module so as to adjust the pressure of a detection box to a preset range of the pressure detection point value through the pressure adjusting device;
respectively acquiring standard pressure data and pressure data to be detected by a standard pressure sensor and a pressure sensor to be detected by a data acquisition module;
Respectively collecting a plurality of groups of standard pressure data and detection pressure data under different pressure detection point values so as to detect the pressure detection performance of the pressure sensor to be detected;
the method further comprises the steps of:
obtaining detection data in the detection process, and encrypting and storing the detection data according to a preset rule;
The step of obtaining the detection data in the detection process and encrypting and storing the detection data according to a preset rule comprises the following steps:
Acquiring the model number, the pressure type, the encrypted detection pressure point value and the corresponding error value of the pressure sensor to be detected in the detection data of the same batch;
Acquiring a code mapped by the pressure type, and determining a basic encryption chain according to the pressure sensor model, the code, an encryption detection pressure point value and a corresponding error value;
performing hash calculation chain extension on the basic encryption chain to obtain a corresponding encryption chain body;
Randomly replacing encryption elements in the basic encryption chain and the encryption chain body to obtain a target encryption chain, and encrypting the detection data of the same batch through the target encryption chain;
the method further comprises the steps of:
Acquiring a plurality of detection pressure point values and corresponding error values in the detection data of the same batch;
And periodically determining the encrypted detection pressure point values and the corresponding error values of the detection data in different batches according to the order of the detection pressure point values.
2. The method according to claim 1, wherein the step of acquiring the pressure detection point value received by the data processing module and sending a control signal to the pressure adjusting device through the control module to adjust the pressure of the detection tank to a preset range of the pressure detection point value through the pressure adjusting device comprises:
when the pressure type selected to be processed by the data processing module is gauge pressure, controlling a booster pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated;
and when the pressure type selected to be processed by the data processing module is absolute pressure, controlling a vacuum pump in the pressure regulating device to be started or closed when the pressure in the detection box is regulated.
3. The method for detecting pressure detection accuracy of a pressure sensor according to claim 1, characterized in that the method further comprises:
Collecting a plurality of groups of standard pressure data and detection pressure data, and determining errors between each group of standard pressure data and detection pressure data;
And determining a correction formula of the pressure sensor to be detected according to the error of each group, and correcting the pressure detected by the pressure sensor to be detected according to the correction formula.
4. A system for detecting accuracy of pressure detection of a pressure sensor, for implementing the detection method of any one of claims 1 to 3, the system comprising:
the detection box is provided with a sealed space, and is provided with an air inlet and an air outlet with valves and a mounting port for mounting a pressure sensor to be detected;
The pressure regulating device is communicated with the detection box through the air inlet and is used for increasing or decreasing the pressure in the detection box;
The standard pressure sensor is arranged in the detection box and is used for monitoring the air pressure in the detection box to obtain the real air pressure in the detection box;
A data processing module; for issuing control signals;
a data acquisition module; the system is in telecommunication connection with the standard pressure sensor and the pressure sensor to be detected respectively so as to collect data detected by the standard pressure sensor and the pressure sensor to be detected;
The control module is respectively and electrically connected with the valve and the pressure regulating device so as to control the valve or the pressure regulating device;
The data acquisition module and the control module are respectively in telecommunication connection with the data processing module, so that after the control signals are received, the corresponding control is carried out on the valve and the pressure regulating device, and then the pressure data detected by the corresponding standard pressure sensor and the pressure sensor to be detected are acquired.
5. The system of claim 4, wherein the air inlet and the air outlet are respectively disposed on opposite sides of the detection box, and the mounting port is disposed on different sides of the air inlet and the air outlet on the detection box.
6. The system according to claim 4, wherein the pressure adjusting means includes a booster pump and a vacuum pump, which communicate with the detection tank through the air inlets, respectively.
7. The system for detecting accuracy of pressure detection of a pressure sensor according to claim 4, further comprising an atmospheric pressure sensor disposed outside the detection box, the atmospheric pressure sensor being in communication with the data acquisition module.
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