CN115901021A - Method, apparatus, medium, and program product for determining pressure information - Google Patents
Method, apparatus, medium, and program product for determining pressure information Download PDFInfo
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Abstract
It is an object of the present application to provide a method, device, medium and program product for determining pressure information. The method comprises the following steps: acquiring an electric signal acquisition value; inquiring a range matched with a target range from a database according to the target range, and taking configuration information corresponding to the range as target configuration information, wherein the target range is acquired by a pressure transmitter in response to input operation of a user, and the database comprises one or more ranges and the configuration information corresponding to each range; and determining a target pressure value corresponding to the electric signal acquisition value according to the target configuration information. The purpose that a user can input the target measuring range according to actual needs is achieved. And determining a target pressure value corresponding to the pressure signal acquisition value according to the target configuration information of the target range, and ensuring the accuracy of the pressure value by obtaining the target configuration information corresponding to the target range when a user changes the range of the pressure transmitter, thereby ensuring the output accuracy.
Description
Technical Field
The present application relates to the field of sensors, and more particularly, to a technique for determining pressure information.
Background
The pressure transmitter consists of an intelligent sensor and an intelligent electronic board. Pressure transmitters have well-defined range labels, for example, 0 to 16Mpa. For the current output type pressure transmitter, a current signal of 4-20 m is output. The current signal corresponds strictly to the range. In the using process, equipment such as a secondary instrument, a Programmable Logic Controller (PLC), upper computer software and the like on site obtains an actual pressure value through a calibrated range according to the acquired current value. However, after the equipment is installed on the site, the factory range of the product is found to be inconsistent with the actual requirement, so that the data displayed by the secondary meter or the background data of the user is inconsistent with the actual measurement value.
Disclosure of Invention
It is an object of the present application to provide a method, apparatus, medium and program product for determining pressure information.
According to an aspect of the present application, there is provided a method for determining pressure information, the method comprising:
acquiring an electric signal acquisition value, wherein the electric signal acquisition value is acquired by acquiring pressure signal information through a pressure sensor and amplifying the pressure signal information through an acquisition chip;
inquiring a range matched with a target range from a database according to the target range, and taking configuration information corresponding to the range as target configuration information, wherein the target range is acquired by the pressure transmitter in response to input operation of a user, and the database comprises one or more ranges and the configuration information corresponding to each range;
and determining a target pressure value corresponding to the electric signal acquisition value according to the target configuration information.
According to an aspect of the present application, there is provided an apparatus for determining stress information, the apparatus comprising:
a processor; and
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the operations of any of the methods described above.
According to one aspect of the application, there is provided a computer readable medium storing instructions that, when executed, cause a system to perform the operations of any of the methods described above.
According to an aspect of the application, a computer program product is provided, comprising a computer program which, when executed by a processor, carries out the steps of any of the methods as described above.
Compared with the prior art, the method and the device have the advantages that the electric signal acquisition value is obtained, the target configuration information corresponding to the target range is inquired from the database according to the target range, and the target range is input by a user when the pressure transmitter is actually applied. Therefore, the purpose that a user can input the target measuring range according to actual needs is achieved. And determining a target pressure value corresponding to the pressure signal acquisition value according to the target configuration information of the target range, and using the configuration information corresponding to the range matched with the target range as the target configuration information, so that when a user changes the range of the pressure transmitter, the accuracy of the pressure value can still be ensured, and the output precision [ accuracy ] is ensured.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 illustrates a flow diagram of a method for determining pressure information according to one embodiment of the present application;
FIG. 2 shows a schematic diagram of an apparatus for determining pressure information according to an embodiment of the present application;
FIG. 3 shows a schematic diagram of an apparatus for determining pressure information according to an embodiment of the present application;
FIG. 4 shows a circuit diagram of an acquisition chip according to one embodiment of the present application;
FIG. 5 shows a circuit diagram of an output chip according to one embodiment of the present application;
FIG. 6 illustrates an exemplary system that can be used to implement the various embodiments described in this application.
Detailed description of the preferred embodiments
The present application is described in further detail below with reference to the attached figures.
In a typical configuration of the present application, the terminal, the device serving the network, and the trusted party each include one or more processors (e.g., central Processing Units (CPUs)), input/output interfaces, network interfaces, and memory.
The Memory may include forms of volatile Memory, random Access Memory (RAM), and/or non-volatile Memory in a computer-readable medium, such as Read Only Memory (ROM) or Flash Memory. Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase-Change Memory (PCM), programmable Random Access Memory (PRAM), static Random-Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash Memory or other Memory technology, compact Disc Read Only Memory (CD-ROM), digital Versatile Disc (DVD) or other optical storage, magnetic tape storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
The device referred to in the present application includes, but is not limited to, a terminal, a network device, or a device formed by integrating a terminal and a network device through a network. The terminal includes, but is not limited to, any mobile electronic product, such as a smart phone, a tablet computer, etc., capable of performing human-computer interaction with a user (e.g., human-computer interaction through a touch panel), and the mobile electronic product may employ any operating system, such as an Android operating system, an iOS operating system, etc. The network Device includes an electronic Device capable of automatically performing numerical calculation and information processing according to a preset or stored instruction, and the hardware includes, but is not limited to, a microprocessor, an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a Digital Signal Processor (DSP), an embedded Device, and the like. The network device includes but is not limited to a computer, a network host, a single network server, a plurality of network server sets or a cloud of a plurality of servers; here, the Cloud is composed of a large number of computers or web servers based on Cloud Computing (Cloud Computing), which is a kind of distributed Computing, one virtual supercomputer consisting of a collection of loosely coupled computers. Including, but not limited to, the internet, a wide area network, a metropolitan area network, a local area network, a VPN network, a wireless Ad Hoc network (Ad Hoc network), etc. Preferably, the device may also be a program running on the terminal, the network device, or a device formed by integrating the terminal and the network device, the touch terminal, or the network device and the touch terminal through a network.
Of course, those skilled in the art will understand that the above-described apparatus is merely exemplary, and that other existing or future existing apparatus, as may be suitable for use in the present application, are intended to be encompassed within the scope of the present application and are hereby incorporated by reference.
In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 shows a method for determining pressure information, applied to a pressure transmitter, according to an embodiment of the present application, the method includes steps S11, S12, and S13. In step S11, acquiring an electrical signal acquisition value, wherein the electrical signal acquisition value is acquired by acquiring pressure signal information through a pressure sensor, and acquiring the pressure signal information after amplifying the pressure signal information through an acquisition chip; in step S12, according to a target measurement range, querying a measurement range matched with the target measurement range from a database, and using configuration information corresponding to the measurement range as target configuration information, where the target measurement range is obtained by the pressure transmitter in response to an input operation of a user, and the database includes one or more measurement ranges and configuration information corresponding to each measurement range; in step S13, a target pressure value corresponding to the electric signal acquisition value is determined according to the target configuration information. In some embodiments, as shown in fig. 3, the pressure transmitter includes an MCU processor (micro control unit), a pressure sensing element (e.g., the pressure sensor), and an ADS1220 (e.g., the collecting chip, please refer to fig. 4 for a specific circuit diagram). In some embodiments, the execution subject of the present application specifically includes the MCU processor of the pressure transmitter, for example, the MCU processor obtains the electrical signal collection value, queries a range matching the target range from a database according to the target range, and determines a target pressure value corresponding to the electrical signal collection value according to target configuration information. In some embodiments, the acquisition chip includes a signal amplifier and an AD acquisition circuit. For example, the capture chip includes, but is not limited to, an ADS1220 chip or an ADS1120 chip. Here, as can be understood by those skilled in the art, the ADS1220 chip or the ADS1120 chip is an AD acquisition chip integrating a low noise programmable gain amplifier (PDA) and a driving current source. In other words, the ADS1220 chip or the ADS1120 chip may amplify the electrical signal converted from the pressure signal information through the cooperative matching of the amplification factor and the excitation current signal. In some embodiments, as shown in fig. 3, the pressure sensor, the signal amplifier, and the AD acquisition circuit are electrically connected in sequence, and the MCU processor is electrically connected to the signal amplifier to control the signal amplifier to adjust the amplification parameters.
Specifically, in step S11, an electrical signal collection value is obtained, where the electrical signal collection value is obtained by collecting pressure signal information through a pressure sensor, collecting the pressure signal information through a collection chip, and amplifying the pressure signal information. In some embodiments, the pressure transmitter includes a pressure sensor (e.g., a diffused silicon sensor, a single crystal silicon sensor, a differential pressure sensor, or a ceramic pressure sensor), an acquisition chip, with the pressure sensor electrically connected to the acquisition chip. And acquiring pressure signal information through the pressure sensor, and converting the acquired pressure signal information into an electric signal. The pressure sensor transmits the electric signal to the acquisition chip, the acquisition chip amplifies the electric signal through an amplifying circuit, and an AD acquisition circuit acquires and acquires an electric signal acquisition value (for example, an AD value).
In step S12, a range matching the target range is queried from a database according to the target range, and configuration information corresponding to the range is used as target configuration information, where the target range is obtained by the pressure transmitter in response to an input operation of a user, and the database includes a plurality of ranges and configuration information corresponding to each range. In some embodiments, the pressure transmitter further comprises an operating button or touch input screen for a user to input the target gauge. In some embodiments, the "range" includes the maximum range value for a range of ranges. For example, the target ranges include, but are not limited to, 2MPa (e.g., 0 to 2MPa), 4MPa (e.g., 0 to 4 MPa), 6MPa (e.g., 0 to 6 MPa), 8MPa (e.g., 4 to 8 MPa), or 16MPa (e.g., 0 to 16MPa). Of course, those skilled in the art will appreciate that the target range described above is merely an example, and the user can input the required range according to actual needs. In some embodiments, the database includes a plurality of measurement ranges, each measurement range corresponds to configuration information, and a mapping relationship exists between each measurement range and the configuration information corresponding to the measurement range. For example, the pressure transmitter queries a range matched with the target range from the database according to the target range input by the user to obtain configuration information having a mapping relation with the range, and takes the configuration information as the target configuration information. In some embodiments, the "range matching the target range" includes, but is not limited to, a range equal to the target range, or a range greater than the target range and having a minimum difference from the target range. For example, the database includes four ranges of 2Mpa, 4Mpa, 8Mpa and 16Mpa, and configuration information corresponding to each range. In some embodiments, if the target range input by the user is 8Mpa, the pressure transmitter directly queries and calls the configuration information corresponding to 8Mpa from the database according to the target range of 8Mpa, and uses the configuration information corresponding to 8Mpa as the target configuration information. In other embodiments, if the target range input by the user is 6, 8Mpa is greater than 6Mpa and the difference with 6Mpa among the four ranges (2 Mpa, 4Mpa, 8Mpa, 16 Mpa) is the smallest, 8Mpa is determined as the range matching the target range 6Mpa, and the configuration information corresponding to 8Mpa is used as the target configuration information. In some embodiments, the target configuration information includes a target amplification parameter, so that the acquisition chip amplifies the electrical signal converted from the pressure signal information according to the target amplification parameter. In some embodiments, the target configuration information further includes target adjustment parameters. For a specific embodiment of the target configuration information, please refer to the following embodiment, which is not described herein. In some embodiments, the database (e.g., the plurality of measurement ranges and the configuration information corresponding to each measurement range) is stored in an EEPROM (Programmable read only Memory) or a FLASH (FLASH EEPROM Memory) of the pressure transmitter.
In step S13, a target pressure value corresponding to the electrical signal acquisition value is determined according to the target configuration information. For example, the pressure transmitter determines a target pressure value corresponding to the electric signal acquisition value according to target configuration information corresponding to the target measuring range. For example, the target configuration information includes a target amplification parameter and a target adjustment parameter, and the pressure transmitter determines a target pressure value corresponding to the electrical signal acquisition value according to the target amplification parameter and the target adjustment parameter.
In some embodiments, the target configuration information includes a target amplification parameter and a target adjustment parameter, the step S13 includes a step S131 (not shown), a step S132 (not shown), and in the step S131, the amplification parameter is adjusted to the target amplification parameter by the acquisition chip, where the target amplification parameter includes a target amplification factor and/or a target excitation signal value; in step S132, under the target amplification parameter, a target pressure value corresponding to the electrical signal acquisition value is determined according to the electrical signal acquisition value and the target adjustment parameter. In some embodiments, the acquisition chip includes an ADS1220 chip or an ADS1120 chip, and the ADS1220 chip or the ADS1120 chip may implement a cooperative coordination of an amplification factor and an excitation signal to implement an amplification process on an electrical signal acquisition value. For example, in some embodiments, the amplification of the electrical signal to the target value may be achieved only by the amplification factor, and at this time, the target amplification parameter may include the corresponding target amplification factor. For another example, in other embodiments, the amplification of the electrical signal to the target value can be achieved only by the excitation signal, and then, the target amplification parameter includes the corresponding excitation signal value. For another example, in some embodiments, the amplification of the electrical signal to a target value cannot be achieved by only amplification or excitation signal, and then the target amplification parameter includes a target amplification and a target excitation signal value. In some embodiments, under the target amplification parameter, a target pressure value corresponding to the electrical signal acquisition value is determined according to the electrical signal acquisition value and the target adjustment parameter. In some embodiments, the pressure transmitter determines the target pressure value by using a least square method, and the target adjustment parameter includes parameter information corresponding to the least square method. In other embodiments, the pressure transmitter determines the target pressure value by using an interpolation method, and the target adjustment parameter includes parameter information corresponding to the interpolation method. For specific embodiments of determining the target pressure value according to the least square method and determining the target pressure value according to the interpolation method, reference is made to the following detailed description, which is not repeated herein.
In some embodiments, the target adjustment parameters include a first target parameter, a second target parameter, and a third target parameter, and the step S132 includes: under the target amplification parameter, determining a target pressure value corresponding to the electric signal acquisition value according to the first target parameter, the second target parameter, the third target parameter, the electric signal acquisition value and a first calculation formula, wherein the first calculation formula comprises:
herein, the
Is the target pressure value; the described
Collecting a value for the electrical signal; the described
The first target parameter; the above-mentioned
The second target parameter; the described
Is the third target parameter. For example, the target pressure value is determined by using a least square method, and the target adjustment parameters include a first target parameter, a second target parameter, and a third target parameter. For example, after the acquisition chip adjusts the amplification parameter to the target amplification parameter, the target pressure value corresponding to the electrical signal acquisition value is determined according to the first target parameter, the second target parameter, the third target parameter, the electrical signal acquisition value, and the first calculation formula. In some embodiments, values of the first target parameter, the second target parameter, and the third target parameter are determined in a pre-calibration manner, so that in actual application, a target pressure value corresponding to the electric signal acquisition value is determined according to the first target parameter, the second target parameter, the third target parameter, the electric signal acquisition value, and a first calculation formula.
In some embodiments, the method further includes step S14 (not shown), in step S14, obtaining one or more measurement ranges and first calibration information of each measurement range, wherein the first calibration information of each measurement range includes a first amplification parameter corresponding to the measurement range, and one or more first sample point information, each first sample point information includes a first electrical signal sample value and a first pressure sample value corresponding to the first electrical signal sample value, and the first sample point information is obtained under the first amplification parameter; and for each range, determining a first adjusting parameter corresponding to the range according to the one or more first sampling point information and the first calculation formula, and taking the first amplifying parameter and the first adjusting parameter as configuration information of the range, wherein each range meets a range condition. In some embodiments, the one or more measurement ranges and the configuration information corresponding to each measurement range are obtained by a pre-calibration method, so that the one or more measurement ranges and the configuration information corresponding to each measurement range are stored in the database in advance (for example, before the step S11), and when a subsequent user uses the pressure transmitter, the pressure transmitter queries the database for a measurement range matching the target measurement range according to the target measurement range, and uses the configuration information corresponding to the measurement range as the target configuration information. In some embodiments, the first amplification parameter includes a suitable amplification parameter for the measurement range. In some embodiments, the sampling of each range needs to be performed at a suitable amplification parameter (e.g., the first amplification parameter) for that range. In some embodiments, the determination of the first amplification parameter may be obtained empirically. For example, it is known that for a span of 16MPa, the AD value obtained when a pressure of 16MPa is applied under suitable amplification parameters is around 30000. When the measuring range is calibrated, a first pressure sampling value of 16Mpa is applied to obtain a first electric signal sampling value of about 30000, and the amplification parameter at the moment is taken as the first amplification parameter of the measuring range (16 Mpa). In some embodiments, the first amplification parameter comprises a first amplification factor and/or a first excitation signal value. In some embodiments, during calibration, the first pressure sample value may be determined by the pressure calibration stage and the first pressure sample value to be sampled is applied. With respect to the sampling process, for example, one or more first pressure samples (e.g., the first pressure samples comprise 0 Mpa, 4Mpa, 8Mpa, 12 Mpa, 16 Mpa) are applied to the pressure sensor to obtain an AD acquisition value (e.g., the first electrical signal sample) corresponding to each first pressure sample. In the present embodiment, a 5-point calibration method is used. Of course, as can be appreciated by those skilled in the art, three-point calibration, six-point calibration, etc. may also be employed, with the more calibration, the higher the accuracy. And further, determining a first target parameter, a second target parameter and a third target parameter in the first calculation formula according to the first pressure sampling value and the first electric signal sampling value. For example, the first target parameter, the second target parameter, and the third target parameter can be obtained by substituting the plurality of first pressure sample values and the first electrical signal sample value corresponding to each first pressure sample value into the first calculation formula, and the first target parameter, the second target parameter, and the third target parameter are used as the first adjustment parameter corresponding to the measurement range. A division with respect to the one or more measurement ranges. In some embodiments, a plurality of measurement ranges may be randomly determined according to a factory measurement range of the pressure transmitter, or a plurality of measurement ranges may be determined according to a certain rule (for example, 2 times of the factory measurement range is decreased, or 3 times of the factory measurement range is decreased, and the factory measurement range is 16Mpa, and is divided into 2Mpa, 4Mpa, 8Mpa, and 16Mpa, where 8Mpa is a previous measurement range of 16Mpa, and 4Mpa is a previous measurement range of 8 Mpa). Then, whether each range meets the range condition is detected according to the range condition, and if not, the range is adjusted (for example, range division is added). In some embodiments, the detection of whether the span satisfies a span condition comprises: if the measurement error of the measurement range is less than or equal to the accuracy of the previous measurement range (where each pressure transmitter has its corresponding accuracy, which is calibrated when the pressure transmitter leaves the factory), it is determined that the measurement range satisfies the measurement range condition, otherwise, it is determined that the measurement range does not satisfy the measurement range condition, where, for the minimum measurement range (e.g., 2Mpa above), the measurement error of the measurement range is less than or equal to the accuracy of the measurement range (e.g., 0.2%), it is determined that the minimum measurement range satisfies the measurement range condition, otherwise, it is determined that the minimum measurement range does not satisfy the measurement range condition. In some embodiments, the measurement error for a range includes an absolute value of a difference between a reference value calculated from a first tuning parameter corresponding to the range and an actual applied pressure value. In some embodiments, pressure may be applied to the pressure transmitter by a pressure calibration stage, such that when a measurement error is detected, the actual applied pressure value is known. For example, after a plurality of measurement ranges (e.g., 2Mpa, 4Mpa, 8Mpa, 16 Mpa) are determined according to a certain rule (e.g., randomly or N-times decreasing), for each measurement range, the first amplification parameter of the measurement range is determined based on the above-described determination method for the first amplification parameter. Then, under the first amplification parameter, multi-point calibration is carried out on the measuring range to obtain a first adjustment parameter corresponding to the measuring range, so that a first adjustment parameter corresponding to each measuring range is obtained. Then, whether each range satisfies the range condition is detected based on the range condition. For example, in the measuring range of 8Mpa, whether the measurement error of all values (which can be all integers, such as 1,2, 8230; 82308; or decimal values, such as 0.001,0.002, 8230; 8) in 0 to 8Mpa is less than or equal to 4 to 0.2% or not is calculated. And if the measurement errors of all the values from 0 to 8Mpa are less than or equal to 4 x 0.2%, determining that the range division of 8Mpa has no problem. If a problem value exists in the range from 0 to 8Mpa and the measurement error of the problem value is greater than 4 x 0.2%, the problem value is used as a measuring range, whether the newly added measuring range meets the measuring range condition or not is detected, and when the problem value which does not meet the measuring range condition is detected, the problem value is added as the new measuring range. After one or more ranges, a first amplification parameter corresponding to each range and a first adjustment parameter are obtained, the first amplification parameter and the first adjustment parameter are used as configuration information of the ranges, and a mapping relation between the ranges and the corresponding configuration information is established.
In some embodiments, the target adjustment parameter comprises a target electrical signal sampling interval within which the electrical signal acquisition value is; the step S132 includes: determining a target pressure value corresponding to the electric signal acquisition value according to a starting electric signal sampling value, a terminating electric signal sampling value, a starting pressure sampling value corresponding to the starting electric signal sampling value, a terminating pressure sampling value corresponding to the terminating electric signal sampling value, a minimum second electric signal sampling value of the target measuring range and a second calculation formula, wherein the second calculation formula comprises:
herein, the
Is the target pressure value; the above-mentioned
Collecting a value for the electrical signal; the described
Is the minimum second electrical signal sample value; the above-mentioned
Sampling the starting electrical signal; the above-mentioned
Sampling the terminating electrical signal; the described
Sampling the initial pressure; the above-mentioned
The end pressure sample value is obtained. The target pressure value is determined, for example, using interpolation. For example, the configuration information for each measurement range includes a plurality of electrical signal sampling intervals, and a start pressure sample value corresponding to a start electrical signal sample value, a stop pressure sample value corresponding to a stop electrical signal sample value, and a minimum pressure sample value for the measurement range for each of the electrical signal sampling intervals. In some embodiments, the electrical signal sampling interval includes a start electrical signal sample value and a stop electrical signal sample value. For example, a target electrical signal sampling interval [1,2 ]]Of the initiating telecommunicationsThe signal sample value is 1 and the terminating electrical signal sample value is 2. In some embodiments, the starting electrical signal sample value corresponding to each measurement range, and the starting pressure sample value corresponding to the starting electrical signal sample value are obtained by sampling at the appropriate amplification parameter corresponding to that measurement range. Further, a target electrical signal sampling interval in which the electrical signal acquisition value is located is determined according to the electrical signal acquisition value acquired in real time (for example, a starting electrical signal sampling value of the target electrical signal sampling interval is less than or equal to the electrical signal acquisition value)<The terminal electrical signal sample value of the target electrical signal sample interval). Further, the target pressure value is determined according to the starting electrical signal sampling value, the ending electrical signal sampling value, the starting pressure sampling value corresponding to the starting electrical signal sampling value, the ending pressure sampling value corresponding to the ending electrical signal sampling value, the minimum pressure sampling value of the target measuring range and a second calculation known value. In other words, the configuration information of each measurement range includes a plurality of second electrical signal sampling values sampled under the second amplification parameter corresponding to the measurement range (here, the second amplification parameter and the first amplification parameter are only used for distinguishing the appropriate amplification parameters corresponding to the least square method and the interpolation method, and please refer to the above embodiment for determining the appropriate amplification parameters, and details are not described here), and the two adjacent second electrical signal sampling values are respectively used as the start electrical signal sampling value and the stop electrical signal sampling value, so as to form the electrical signal sampling interval. And determining a target electrical signal sampling interval where the electrical signal acquisition value is located according to the electrical signal acquisition value acquired in real time, so as to acquire a starting electrical signal sampling value, a terminating electrical signal sampling value, a starting pressure sampling value corresponding to the starting electrical signal sampling value and a terminating pressure sampling value corresponding to the terminating electrical signal sampling value of the target electrical signal sampling interval. In some embodiments, the plurality of second electrical signal sample values for each span are consecutive (e.g., 0,1,2,3,4 \ 8230; and the smallest second electrical signal sample value comprises the smallest second electrical signal sample value of the plurality of second electrical signal sample values (e.g., 0).
In some embodiments, the method further includes step S15 (not shown), in step S15, acquiring one or more measurement ranges and second calibration information of each measurement range, wherein the second calibration information of each measurement range includes a second amplification parameter corresponding to the measurement range, and one or more second sample point information, each second sample point information includes a second electrical signal sample value and a second pressure sample value corresponding to the second electrical signal sample value, and the second sample point information is acquired under the second amplification parameter; and for each range, determining one or more electric signal sampling intervals corresponding to the range and a pressure sampling interval corresponding to each electric signal sampling interval according to the one or more second sampling point information, wherein the starting electric signal sampling value and the ending voltage signal value of each electric signal sampling interval are adjacent, and the second amplification parameter, the minimum second electric signal sampling value of the range, the one or more electric signal sampling intervals and the pressure sampling interval corresponding to the one or more electric signal sampling intervals are used as configuration information of the range, and each range meets the range condition. For example, pre-calibration is also required when interpolation is used. For example, in some embodiments, the one or more measurement ranges and the configuration information corresponding to each measurement range are obtained by a pre-calibration method, so that the one or more measurement ranges and the configuration information corresponding to each measurement range are stored in the database in advance (for example, before the step S11), and when a subsequent user uses the pressure transmitter, the pressure transmitter queries, according to a target measurement range, target configuration information corresponding to the target measurement range from the database. In some embodiments, each pressure transmitter has its factory range, e.g., the original range of the pressure transmitter at the factory. In some embodiments, the sampling of each range needs to be performed at a suitable amplification parameter (e.g., the second amplification parameter) for that range. In some embodiments, the determination of the second amplification parameter may be obtained empirically. For example, it is known that when a pressure of 16MPa is applied to a range of 0 to 16900 MPa under appropriate amplification parameters, the obtained voltage signal (AD value) is about 30000. And when the measuring range is calibrated, applying a second pressure sampling value of 16Mpa to obtain a second electric signal sampling value of about 30000, and taking the amplification parameter at the moment as a second amplification parameter of the measuring range (0 to 16900 Mpa). In some embodiments, the second amplification parameter comprises a second amplification factor and/or a second excitation signal value. In some embodiments, during calibration, the second pressure sample value may be determined by the pressure calibration stage and applied as the second pressure sample value to be sampled. With respect to the sampling process, for example, a plurality of second pressure sample values (e.g., the second pressure sample values include 0 Mpa, 4Mpa, 8Mpa, 12 Mpa, 16 Mpa) are applied to the pressure sensor, and an AD acquisition value (e.g., the second electrical signal sample value) corresponding to each second pressure sample value is obtained. In the present embodiment, a 5-point calibration method is used. Of course, those skilled in the art can understand that the least square method is a curve fitting method, and the more points are calibrated, the higher the fitting accuracy is, and three-point calibration, six-point calibration, etc. may also be used, and the more calibration is, the higher the accuracy is. Further, for each measurement range, the one or more second electrical signal sample values, the second pressure sample value corresponding to each second electrical signal sample value, and the minimum second electrical signal sample value of the measurement range are used as configuration information of the measurement range. In some embodiments, two adjacent second electrical signal sampling values in the configuration information may form an electrical signal sampling interval, so as to detect an electrical signal sampling interval in which an electrical signal acquisition value acquired in real time falls. In some embodiments, a detection process that the range satisfies the range condition is the same as or similar to the embodiment corresponding to the step S14, and details are not repeated here.
In some embodiments, the method further includes a step S16 (not shown), and in the step S16, a target output value corresponding to the target pressure value is determined according to the target pressure value, the target measurement range, the first output value, the second output value, and a third calculation formula, where the third calculation formula includes:
herein, the
Is the target pressure value; the above-mentioned
Is the target range; the above-mentioned
Is the target output value; the above-mentioned
Is the first output value; the described
Is the second output value. And outputting the target output value through an output chip. In some embodiments, the first output value, second output value, target output value include, but are not limited to, a DA value. In some embodiments, the output chips include, but are not limited to, digital-to-analog conversion chips MCP4725, V/I conversion unit XTR115 (e.g., MCU controls MCP4725 to output voltage values, and XTR115 converts the voltage values output by MCP4725 to current values). For example, with continued reference to fig. 3, the pressure transmitter further includes an output chip (for example, the DA unit "MCP4725", the V/I conversion unit "XTR115", see fig. 5 for a specific circuit diagram), and the MCU processor, the DA unit "MCP4725", and the V/I conversion unit "XTR115" are electrically connected in sequence. Of course, those skilled in the art will understand that the above-mentioned digital-to-analog conversion chips MCP4725 and XTR115 are merely examples, and other existing or future possible chips, such as those that can be adapted to the present embodiment, are also within the scope of the present application and are included herein by reference. For example, other similarly functioning chips such as XTR116, XTR111, etc. or similarly functioning circuits built from discrete components may be employed. For example, the output current is usually converted to a corresponding 4 to 20MA output current value. In some embodiments, the first output value and the second output value may be preset. For example, the first output value includes a DA value corresponding to output 4MA, andthe second output value includes a DA value corresponding to output 20 MA. Further, a target output value corresponding to the target pressure value is determined according to a target pressure value, the target measuring range, the first output value, the second output value and a third calculation formula.
In some embodiments, to further improve the accuracy, the pressure transmitter further includes two temperature sensors (a first temperature sensor and a second temperature sensor) for respectively acquiring the real-time temperature of the medium and the real-time temperature of the environment. Different medium temperatures correspond to different medium temperature correction coefficients, and different environment temperatures correspond to different environment temperature correction coefficients. For example, the pressure sensor stores a plurality of medium temperatures and a mapping relationship between each medium temperature and a medium correction parameter corresponding to the medium temperature in advance, searches for a medium temperature matching the medium real-time temperature from the plurality of medium temperatures according to the medium real-time temperature, and takes a medium temperature correction coefficient corresponding to the medium temperature as a target medium correction coefficient Km. Similarly, a plurality of environment temperatures and the mapping relation between each environment temperature and the environment correction parameter corresponding to the environment temperature are pre-stored in the pressure sensor, the environment temperature matched with the environment real-time temperature is inquired from the environment temperatures according to the environment real-time temperature, and the environment temperature correction coefficient corresponding to the environment temperature is used as the target environment correction coefficient Ke. Further, the target pressure value y is corrected according to the target medium correction coefficient and the target environment correction coefficient, and a corrected target pressure value y' is obtained. For example, y' = Km x y Ke. Further, a target output value corresponding to the target pressure value is determined according to the corrected target pressure value y', the target measuring range, the first output value, the second output value and a third calculation formula.
Fig. 2 shows a schematic structural diagram of an apparatus for determining pressure information according to an embodiment of the present application, where the apparatus includes a one-module, a two-module, and a three-module. The module is used for acquiring an electric signal acquisition value, wherein the electric signal acquisition value is acquired by acquiring pressure signal information through a pressure sensor, amplifying the pressure signal information through an acquisition chip and acquiring; the first module and the second module are used for inquiring a measuring range matched with a target measuring range from a database according to the target measuring range, and taking configuration information corresponding to the measuring range as target configuration information, wherein the target measuring range is acquired by the pressure transmitter in response to input operation of a user, and the database comprises one or more measuring ranges and configuration information corresponding to each measuring range; and the first module and the third module are used for determining a target pressure value corresponding to the electric signal acquisition value according to the target configuration information.
Here, the specific implementation of the one-to-one module, the two-to-two module, and the one-to-three module is the same as or similar to the specific implementation of the step S11, the step S12, and the step S13, and therefore, the description is omitted, and the description is included herein by way of reference.
In some embodiments, the target configuration information includes target amplification parameters and target adjustment parameters, the one-three module includes a three-one module (not shown), a three-two module (not shown), and the one-three-one module is used for adjusting the amplification parameters to the target amplification parameters through the acquisition chip, wherein the target amplification parameters include target amplification factors and/or target excitation signal values; and the one, three and two modules are used for determining a target pressure value corresponding to the electric signal acquisition value according to the electric signal acquisition value and the target adjustment parameter under the target amplification parameter.
Here, the specific implementation of the one-three-one module and the one-three-two module is the same as or similar to the specific implementation of the step S131 and the step S132, and therefore, the detailed description is omitted, and the specific implementation is included herein by way of reference.
In some embodiments, the target adjustment parameters include a first target parameter, a second target parameter, and a third target parameter, and the one or more modules are configured to: under the target amplification parameter, determining a target pressure value corresponding to the electric signal acquisition value according to the first target parameter, the second target parameter, the third target parameter, the electric signal acquisition value and a first calculation formula, wherein the first calculation formula comprises:
herein, the
Is the target pressure value; the above-mentioned
Collecting a value for the electrical signal; the above-mentioned
The first target parameter; the above-mentioned
The second target parameter; the above-mentioned
Is the third target parameter.
Here, the specific implementation of the first, second, third and fourth modules is the same as or similar to the specific implementation of the step S132, and thus is not repeated here, and is included herein by way of reference.
In some embodiments, the apparatus further comprises a quad module (not shown) for obtaining one or more measurement ranges and first calibration information for each measurement range, wherein the first calibration information for each measurement range comprises a first amplification parameter corresponding to the measurement range, and one or more first sample point information, each first sample point information comprises a first electrical signal sample value and a first pressure sample value corresponding to the first electrical signal sample value, and the first sample point information is obtained under the first amplification parameter; and for each range, determining a first adjusting parameter corresponding to the range according to the one or more first sampling point information and the first calculation formula, and taking the first amplifying parameter and the first adjusting parameter as configuration information of the range, wherein each range meets a range condition.
Here, the specific implementation manner corresponding to the four modules is the same as or similar to the specific implementation manner of step S14, and thus is not described again and is included herein by way of reference.
In some embodiments, the target adjustment parameter comprises a target electrical signal sampling interval within which the electrical signal acquisition value is; the one, three and two modules are used for: determining a target pressure value corresponding to the electric signal acquisition value according to a starting electric signal sampling value, a terminating electric signal sampling value, a starting pressure sampling value corresponding to the starting electric signal sampling value, a terminating pressure sampling value corresponding to the terminating electric signal sampling value, a minimum second electric signal sampling value of the target range and a second calculation formula, wherein the second calculation formula comprises:
herein, the
Is the target pressure value; the described
Collecting a value for the electrical signal; the above-mentioned
Is the minimum second electrical signal sample value; the above-mentioned
Sampling the starting electrical signal; the above-mentioned
Sampling the terminating electrical signal; the above-mentioned
Sampling the starting pressure; the above-mentioned
The end pressure sample value is obtained.
Here, the specific implementation of the first, second, third and fourth modules is the same as or similar to the specific implementation of the step S132, and thus is not repeated here, and is included herein by way of reference.
In some embodiments, the apparatus further comprises a fifth module (not shown) for obtaining one or more measurement ranges and second calibration information for each measurement range, wherein the second calibration information for each measurement range comprises a second amplification parameter corresponding to the measurement range and one or more second sample point information, each second sample point information comprises a second electrical signal sample value and a second pressure sample value corresponding to the second electrical signal sample value, and the second sample point information is obtained under the second amplification parameter; and for each range, determining one or more electric signal sampling intervals corresponding to the range and a pressure sampling interval corresponding to each electric signal sampling interval according to the one or more second sampling point information, wherein the starting electric signal sampling value and the ending voltage signal value of each electric signal sampling interval are adjacent, and the second amplification parameter, the minimum second electric signal sampling value of the range, the one or more electric signal sampling intervals and the pressure sampling interval corresponding to the one or more electric signal sampling intervals are used as configuration information of the range, and each range meets the range condition.
Here, the specific implementation manner corresponding to the fifth module is the same as or similar to the specific implementation manner of the step S15, and thus is not repeated here and is included herein by way of reference.
In some embodiments, the apparatus further includes a sixth module (not shown) configured to determine a target output value corresponding to the target pressure value according to the target pressure value, the target measurement range, the first output value, the second output value, and a third calculation formula (not shown), where the third calculation formula includes:
herein, the
Is the target pressure value; the above-mentioned
Is the target range; the above-mentioned
Is the target output value; the above-mentioned
Is the first output value; the described
Is the second output value. And outputting the target output value through an output chip.
Here, the specific implementation corresponding to the six modules is the same as or similar to the specific implementation of the step S16, and thus is not repeated here, and is included herein by way of reference.
In addition to the methods and apparatus described in the embodiments above, the present application also provides a computer readable storage medium storing computer code that, when executed, performs the method as described in any of the previous items.
The present application also provides a computer program product, which when executed by a computer device performs the method of any of the preceding claims.
The present application further provides a computer device, comprising:
one or more processors;
a memory for storing one or more computer programs;
the one or more computer programs, when executed by the one or more processors, cause the one or more processors to implement the method of any preceding claim.
FIG. 6 illustrates an exemplary system that can be used to implement the various embodiments described herein;
in some embodiments, as shown in FIG. 6, the system 300 can function as any of the devices in each of the described embodiments. In some embodiments, system 300 may include one or more computer-readable media (e.g., system memory or NVM/storage 320) having instructions and one or more processors (e.g., processor(s) 305) coupled with the one or more computer-readable media and configured to execute the instructions to implement modules to perform the actions described herein.
For one embodiment, system control module 310 may include any suitable interface controllers to provide any suitable interface to at least one of processor(s) 305 and/or any suitable device or component in communication with system control module 310.
The system control module 310 may include a memory controller module 330 to provide an interface to the system memory 315. Memory controller module 330 may be a hardware module, a software module, and/or a firmware module.
For one embodiment, system control module 310 may include one or more input/output (I/O) controllers to provide an interface to NVM/storage 320 and communication interface(s) 325.
For example, NVM/storage 320 may be used to store data and/or instructions. NVM/storage 320 may include any suitable non-volatile memory (e.g., flash memory) and/or may include any suitable non-volatile storage device(s) (e.g., one or more Hard Disk Drives (HDDs), one or more Compact Disc (CD) drives, and/or one or more Digital Versatile Disc (DVD) drives).
NVM/storage 320 may include storage resources that are physically part of the device on which system 300 is installed or may be accessed by the device and not necessarily part of the device. For example, NVM/storage 320 may be accessible over a network via communication interface(s) 325.
Communication interface(s) 325 may provide an interface for system 300 to communicate over one or more networks and/or with any other suitable device. System 300 may wirelessly communicate with one or more components of a wireless network according to any of one or more wireless network standards and/or protocols.
For one embodiment, at least one of the processor(s) 305 may be packaged together with logic for one or more controller(s) (e.g., memory controller module 330) of the system control module 310. For one embodiment, at least one of the processor(s) 305 may be packaged together with logic for one or more controller(s) of the system control module 310 to form a System In Package (SiP). For one embodiment, at least one of the processor(s) 305 may be integrated on the same die with logic for one or more controller(s) of the system control module 310. For one embodiment, at least one of the processor(s) 305 may be integrated on the same die with logic for one or more controller(s) of the system control module 310 to form a system on a chip (SoC).
In various embodiments, system 300 may be, but is not limited to being: a server, a workstation, a desktop computing device, or a mobile computing device (e.g., a laptop computing device, a handheld computing device, a tablet, a netbook, etc.). In various embodiments, system 300 may have more or fewer components and/or different architectures. For example, in some embodiments, system 300 includes one or more cameras, a keyboard, a Liquid Crystal Display (LCD) screen (including a touch screen display), a non-volatile memory port, multiple antennas, a graphics chip, an Application Specific Integrated Circuit (ASIC), and speakers.
It should be noted that the present application may be implemented in software and/or a combination of software and hardware, for example, implemented using Application Specific Integrated Circuits (ASICs), general purpose computers or any other similar hardware devices. In one embodiment, the software programs of the present application may be executed by a processor to implement the steps or functions described above. As such, the software programs (including associated data structures) of the present application can be stored in a computer readable recording medium, such as RAM memory, magnetic or optical drive or diskette and the like. Further, some of the steps or functions of the present application may be implemented in hardware, for example, as circuitry that cooperates with the processor to perform various steps or functions.
Additionally, some portions of the present application may be applied as a computer program product, such as computer program instructions, which, when executed by a computer, may invoke or provide the method and/or solution according to the present application through the operation of the computer. Those skilled in the art will appreciate that the form in which the computer program instructions reside on a computer-readable medium includes, but is not limited to, source files, executable files, installation package files, and the like, and that the manner in which the computer program instructions are executed by a computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Computer-readable media herein can be any available computer-readable storage media or communication media that can be accessed by a computer.
Communication media includes media whereby communication signals, including, for example, computer readable instructions, data structures, program modules, or other data, are transmitted from one system to another. Communication media may include conductive transmission media such as cables and wires (e.g., fiber optics, coaxial, etc.) and wireless (non-conductive transmission) media capable of propagating energy waves such as acoustic, electromagnetic, RF, microwave, and infrared. Computer readable instructions, data structures, program modules, or other data may be embodied in a modulated data signal, for example, in a wireless medium such as a carrier wave or similar mechanism such as is embodied as part of spread spectrum techniques. The term "modulated data signal" means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. The modulation may be analog, digital, or hybrid modulation techniques.
By way of example, and not limitation, computer-readable storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data. For example, computer-readable storage media include, but are not limited to, volatile memory such as random access memory (RAM, DRAM, SRAM); and non-volatile memory such as flash memory, various read-only memories (ROM, PROM, EPROM, EEPROM), magnetic and ferromagnetic/ferroelectric memories (MRAM, feRAM); and magnetic and optical storage devices (hard disk, tape, CD, DVD); or other now known media or later developed that can store computer-readable information/data for use by a computer system.
An embodiment according to the present application comprises an apparatus comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein the computer program instructions, when executed by the processor, trigger the apparatus to perform a method and/or a solution according to the aforementioned embodiments of the present application.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it will be obvious that the term "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not to denote any particular order.
Claims (10)
1. A method for determining pressure information for use with a pressure transmitter, the method comprising:
acquiring an electric signal acquisition value, wherein the electric signal acquisition value is acquired by acquiring pressure signal information through a pressure sensor and amplifying the pressure signal information through an acquisition chip;
inquiring a range matched with a target range from a database according to the target range, and taking configuration information corresponding to the range as target configuration information, wherein the target range is acquired by the pressure transmitter in response to input operation of a user, and the database comprises one or more ranges and the configuration information corresponding to each range;
and determining a target pressure value corresponding to the electric signal acquisition value according to the target configuration information.
2. The method of claim 1, wherein the target configuration information includes a target amplification parameter and a target adjustment parameter, and the determining a target pressure value corresponding to the electrical signal acquisition value according to the target configuration information includes:
adjusting the amplification parameters to the target amplification parameters through the acquisition chip, wherein the target amplification parameters comprise target amplification times and/or target excitation signal values;
and under the target amplification parameter, determining a target pressure value corresponding to the electric signal acquisition value according to the electric signal acquisition value and the target adjustment parameter.
3. The method of claim 2, wherein the target adjustment parameters include a first target parameter, a second target parameter, and a third target parameter, and the determining, under the target amplification parameter, a target pressure value corresponding to the electrical signal acquisition value according to the electrical signal acquisition value and the target adjustment parameter includes:
under the target amplification parameter, determining a target pressure value corresponding to the electric signal acquisition value according to the first target parameter, the second target parameter, the third target parameter, the electric signal acquisition value and a first calculation formula, wherein the first calculation formula comprises:
herein, the
Is the target pressure value; said +>
Collecting a value for the electrical signal; said +>
Is the first target parameter; is/are>
Is the second target parameter; is/are>
Is the third target parameter.
4. The method of claim 3, further comprising:
the method comprises the steps of obtaining one or more measuring ranges and first calibration information of each measuring range, wherein the first calibration information of each measuring range comprises a first amplification parameter corresponding to the measuring range and one or more first sampling point information, each first sampling point information comprises a first electric signal sampling value and a first pressure sampling value corresponding to the first electric signal sampling value, and the first sampling point information is obtained under the first amplification parameter;
and for each range, determining a first adjusting parameter corresponding to the range according to the one or more first sampling point information and the first calculation formula, and taking the first amplifying parameter and the first adjusting parameter as configuration information of the range, wherein each range meets a range condition.
5. The method of claim 2, wherein the target adjustment parameter comprises a target electrical signal sampling interval within which the electrical signal acquisition value is; determining a target pressure value corresponding to the electric signal acquisition value according to the electric signal acquisition value and the target adjustment parameter under the target amplification parameter, wherein the target pressure value comprises:
determining a target pressure value corresponding to the electric signal acquisition value according to a starting electric signal sampling value, a terminating electric signal sampling value, a starting pressure sampling value corresponding to the starting electric signal sampling value, a terminating pressure sampling value corresponding to the terminating electric signal sampling value, a minimum second electric signal sampling value of the target measuring range and a second calculation formula, wherein the second calculation formula comprises:
herein, the
Is the target pressure value; said +>
Collecting a value for the electrical signal; is/are>
Is the minimum second electrical signal sample value; said +>
Sampling the starting electrical signal; said +>
Sampling the terminating electrical signal; the described
Sampling the starting pressure; said +>
The end pressure sample value is obtained.
6. The method of claim 5, further comprising:
acquiring one or more measuring ranges and second calibration information of each measuring range, wherein the second calibration information of each measuring range comprises a second amplification parameter corresponding to the measuring range and one or more second sampling point information, each second sampling point information comprises a second electric signal sampling value and a second pressure sampling value corresponding to the second electric signal sampling value, and the second sampling point information is acquired under the second amplification parameter;
and for each range, determining one or more electric signal sampling intervals corresponding to the range and a pressure sampling interval corresponding to each electric signal sampling interval according to the one or more second sampling point information, wherein the starting electric signal sampling value and the ending voltage signal value of each electric signal sampling interval are adjacent, and the second amplification parameter, the minimum second electric signal sampling value of the range, the one or more electric signal sampling intervals and the pressure sampling interval corresponding to the one or more electric signal sampling intervals are used as configuration information of the range, and each range meets the range condition.
7. The method of claim 1, further comprising:
determining a target output value corresponding to the target pressure value according to the target pressure value, the target measuring range, the first output value, the second output value and a third calculation formula, wherein the third calculation formula comprises:
herein, the
Is the target pressure value; said +>
Is the target range; is/are>
Is the target output value; is/are>
Is the first output value; is/are>
Is the second output value;
and outputting the target output value through an output chip.
8. A computer device for determining pressure information, comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the steps of the method according to any of claims 1 to 7.
9. A computer-readable storage medium, on which a computer program/instructions are stored, which, when being executed by a processor, carry out the steps of the method according to any one of claims 1 to 7.
10. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the method according to any one of claims 1 to 7 when executed by a processor.
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