CN112688687A - Method and device for acquiring physical information to be tested, computer equipment and storage medium - Google Patents
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Abstract
The application relates to a method and a device for acquiring physical information to be detected, computer equipment and a storage medium. The method comprises the following steps: acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs; amplifying a signal input into the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity; the current sampling digital quantity is converted to obtain a corresponding current sampling value, the physical information to be detected is determined according to the current sampling value, dynamic adjustment of gain parameters is achieved, when the physical information to be detected is in different ranges, amplification of different degrees can be conducted on input information, detection precision can be improved while an analog-digital conversion module is not replaced, and adjustment cost and detection precision are both considered.
Description
Technical Field
The present application relates to the field of computing technologies, and in particular, to a method and an apparatus for acquiring physical information to be measured, a computer device, and a storage medium.
Background
With the development of microprocessor and sensor technology, digital sensors are increasingly widely used. The digital sensor mainly comprises a sensing element, a conditioning circuit, a main control chip and a communication module, and external equipment can read a specific numerical value of a physical quantity to be measured from the digital sensor through an interface of the communication module.
Under the condition that the main control chip is not changed, the corresponding sampling bit number of the built-in analog-to-digital conversion module of the digital sensor is fixed, and the corresponding quantization error is also fixed. As the amount to be measured decreases, the relative error caused by the digital sensor increases. In the prior art, in order to improve the detection accuracy, the detection accuracy is often improved by replacing the analog-to-digital conversion module with a higher sampling bit number.
However, the above method usually requires additional adjustment of the digital sensor, and the analog-to-digital conversion module with higher sampling bits is expensive, so it is difficult to consider both the detection accuracy of the physical quantity to be detected and the adjustment cost of the digital sensor.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a method and an apparatus for acquiring physical information to be measured, a computer device, and a storage medium.
A method for acquiring physical information to be measured includes:
acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
amplifying the signal input into the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity;
and converting the current sampling digital quantity to obtain a corresponding current sampling value, and determining the physical information to be detected according to the current sampling value.
Optionally, the amplifying the signal input to the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity includes:
determining an amplification factor according to the target sampling gain parameter;
and amplifying the signal input into the sensor according to the amplification factor, and carrying out data acquisition on the amplified signal to obtain the current sampling digital quantity.
Optionally, the converting the current sampling digital quantity to obtain a corresponding current sampling value includes:
determining a reduction multiple according to the target sampling gain parameter;
and converting the current sampling digital quantity according to the reduction multiple to obtain a current sampling value corresponding to a preset gain standard.
Optionally, the method further comprises:
acquiring a pre-sampling value corresponding to pre-sampled physical information to be detected;
acquiring a plurality of preset sampling intervals; each sampling interval corresponds to different sampling gain parameters;
and according to the pre-sampling value, determining a matched sampling interval from the plurality of sampling intervals, and taking a sampling gain parameter corresponding to the sampling interval as a target sampling gain parameter.
Optionally, the obtaining a pre-sampling value corresponding to the pre-sampled physical information to be detected includes:
acquiring initial sampling digital quantity corresponding to pre-sampled physical information to be detected;
acquiring a pre-sampling gain parameter corresponding to the initial sampling digital quantity; the pre-sampling gain parameter is a sampling gain parameter used when the sensor performs pre-sampling on the physical information to be detected;
and converting the initial sampling digital quantity according to the pre-sampling gain parameter to obtain a pre-sampling value corresponding to a preset gain standard.
Optionally, the method further comprises:
acquiring a measuring range corresponding to the sensor and a total sampling digit number corresponding to an analog-to-digital conversion module in the sensor;
dividing the measuring range into a plurality of measuring range intervals, and acquiring sampling intervals corresponding to the measuring range intervals according to the total sampling digit number;
and acquiring a plurality of different sampling gain parameters, and respectively associating the sampling gain parameters with corresponding sampling intervals.
Optionally, the sampling gain parameter is inversely related to the sampling interval.
An apparatus for acquiring physical information to be tested, the apparatus comprising:
the target sampling gain parameter acquisition module is used for acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
the current sampling digital quantity acquisition module is used for amplifying the signal input into the sensor according to the target sampling gain parameter and carrying out data acquisition to obtain a current sampling digital quantity;
and the to-be-tested physical information determining module is used for converting the current sampling digital quantity to obtain a corresponding current sampling value and determining to-be-tested physical information according to the current sampling value.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method as described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as set forth above.
According to the method and the device for acquiring the physical information to be detected, the target sampling gain parameter is acquired, the signal input to the sensor is amplified according to the target sampling gain parameter, data acquisition is carried out to obtain the current sampling digital quantity, the current sampling digital quantity is converted to obtain the corresponding current sampling value, the physical information to be detected is determined according to the current sampling value, the gain parameter is dynamically adjusted, the input information can be amplified to different degrees when the physical information to be detected is in different ranges, the detection precision can be improved without replacing an analog-to-digital conversion module, and the adjustment cost and the detection precision are both considered.
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Fig. 1 is a schematic flowchart illustrating a method for acquiring physical information to be measured according to an embodiment;
FIG. 2 is a schematic flow chart illustrating the steps of determining the pre-sample value in one embodiment;
FIG. 3 is a schematic diagram of a data processing unit inside a sensor in one embodiment;
FIG. 4 is a block diagram of an apparatus for acquiring physical information under test according to an embodiment;
FIG. 5 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to facilitate understanding of the present application, a manner of improving the detection accuracy of the physical quantity to be detected in the prior art is described below.
The digital sensor mainly comprises a sensing element, a conditioning circuit, a main control chip and a communication module, the digital sensor measures physical quantity to be measured through the sensing element, converts the physical quantity to be measured into analog electric signals to be measured after conditioning by the conditioning circuit and inputs the analog electric signals to the main control chip, and the main control chip samples, converts the analog electric signals to be measured and calculates the analog electric signals to be measured to obtain specific numerical values of the physical quantity to be measured.
The digital sensor has a certain quantization error, namely an error caused by 1 digit of the digital quantity, the quantization error corresponds to the digit number of an analog-to-digital conversion module arranged in the main control chip, when the digit number of the analog-to-digital conversion module is determined, the quantization error of the digital sensor is also fixed, and the quantization error of the large-range digital sensor is larger than that of the small-range digital sensor. Specifically, when the physical quantity to be measured is large, the measurement relative error caused by the quantization error is low; as the physical quantity to be measured becomes smaller, the relative measurement error caused by the quantitative error becomes larger under the condition of not changing the quantitative error, so that the precision of the digital sensor becomes worse when the physical quantity to be measured is smaller.
When a small physical quantity is measured, in order to improve the detection precision, the method adopted in the prior art is to replace a built-in analog-to-digital conversion module and use the analog-to-digital conversion module with higher sampling digit, so that the quantization error is reduced, and the detection precision of the digital sensor is improved. However, the analog-to-digital conversion module with higher sampling bit number is expensive, and the replacement of the mode conversion module requires an adjustment circuit, which increases adjustment cost and time.
In an embodiment, as shown in fig. 1, a method for acquiring physical information to be measured is provided, and this embodiment is exemplified by applying the method to a sensor, and it is to be understood that the method may also be applied to other devices that measure physical information by analog-to-digital conversion. In this embodiment, the method may include the steps of:
As an example, the sensor may be a sensor that measures the physical information by analog-to-digital conversion, such as a digital sensor, wherein the analog-to-digital conversion may refer to converting an analog signal into a digital signal.
The pre-sampling value may be a sampling value obtained by sampling a signal through a digital sensor during pre-sampling, where the pre-sampling may be one or more sampling processes occurring before current sampling for the same physical information to be detected, and the current sampling may also be referred to as formal sampling. After the sensor obtains the sampling value, the physical information to be measured (also referred to as physical quantity to be measured) can be determined based on the sampling and a preset calculation formula.
The sampling gain parameter may be a parameter that produces a gain effect for the current sampling process, for example, a related parameter of the sensor is adjusted according to the gain parameter, so that an absolute error and/or a relative error of a measurement result of the digital sensor is reduced, measurement efficiency is improved, and the like.
The sensor may have a plurality of corresponding sampling intervals, each sampling interval may correspond to a different gain parameter, each sampling interval may be a sampling value range, and the number of boundaries of the sampling interval is an integer, such as [0,1000], (1000,2048], and the like.
In practical application, a sampling interval can be determined according to a pre-sampling value, and then a target sampling gain parameter is obtained according to a sampling gain parameter corresponding to the sampling interval.
And 102, amplifying the signal input into the sensor according to the target sampling gain parameter, and acquiring data to obtain the current sampling digital quantity.
As an example, the sampled digital quantity may be a digital quantity obtained by sampling through an analog-to-digital conversion module in the sensor, and the sampled digital quantity changes correspondingly with the change of the input signal; the current sampled digital quantity may be a digital quantity corresponding to the sampling after the sensor is adjusted using the target sampling gain parameter
In a specific implementation, after the target sampling gain parameter is obtained, the signal input into the sensor may be amplified first according to the target sampling gain parameter, and data acquisition may be performed on the amplified signal to obtain the current sampling digital quantity.
And 103, converting the current sampling digital quantity to obtain a corresponding current sampling value, and determining the physical information to be detected according to the current sampling value.
As an example, the sampled digital quantity is related to the number of sampling bits of a digital conversion module in the sensor, the corresponding data type is an integer type, the sampling value is a value obtained by converting the current sampled digital quantity according to a preset dimension, and the data type of the sampling value is a floating point type, that is, the sampling value may have decimal digits. In practical application, in order to obtain high-precision data, decimal places with precision reaching a preset digit are often needed, and if the decimal places are determined only through integer-type sampling digital quantities, the precision requirement is difficult to meet, so that the sampling digital quantities can be converted after being obtained, and a sampling value with higher detection precision is obtained.
After the current sampling digital quantity is obtained, in order to determine a sampling value corresponding to a signal before amplification, dimension conversion and gain conversion can be performed on the current sampling digital quantity to obtain a sampling value under a preset gain standard, namely the current sampling value, and physical information to be detected is determined according to the current sampling value. When the physical information to be measured is determined, the current sampling value may be substituted into a preset calculation formula, and the calculation result is determined as the physical information obtained by measurement.
In the embodiment, the target sampling gain parameter is acquired, the signal input to the sensor is amplified according to the target sampling gain parameter, data acquisition is performed to obtain the current sampling digital quantity, the current sampling digital quantity is converted to obtain the corresponding current sampling value, the physical information to be detected is determined according to the current sampling value, dynamic adjustment of the gain parameter is realized, amplification of different degrees can be performed on the input information when the physical information to be detected is in different ranges, the detection precision can be improved without replacing an analog-to-digital conversion module, and the adjustment cost and the detection precision are both considered.
In one embodiment, the method may further comprise the steps of:
acquiring a pre-sampling value corresponding to pre-sampled physical information to be detected; acquiring a plurality of preset sampling intervals; each sampling interval corresponds to different sampling gain parameters; and according to the pre-sampling value, determining a matched sampling interval from the plurality of sampling intervals, and taking a sampling gain parameter corresponding to the sampling interval as a target sampling gain parameter.
In practical application, because the physical information to be measured of different sizes requires different degrees of gain, the physical information to be measured can be pre-sampled by the sensor, and the range corresponding to the physical information is preliminarily determined.
Specifically, after the pre-sampling, a pre-sampling value corresponding to the pre-sampled physical information to be detected, that is, a sampling value corresponding to the sensor during the pre-sampling, may be determined. After the sampling value is determined, a plurality of preset sampling intervals can be obtained, each sampling interval has a different sampling value range, and each sampling interval can correspond to a different sampling gain parameter. After the pre-sampling value is determined, the sampling interval of the pre-sampling value can be determined, the sampling interval is used as the sampling interval matched with the pre-sampling value, and the sampling gain parameter corresponding to the sampling interval is determined as the target sampling gain parameter.
E.g. for connectionlessSuccessive sampled values D1、D2、...、DnMultiple sampling intervals [0, D ] can be set separately1]、(D1、D2]、...、(Dn-1、Dn]Its corresponding sampling gain parameter in turn may be G1、G2、...、GnWhen the pre-sampled value FpreGreater than Dx-1And is less than DxThen F can be determinedpreBelonging to the x-th interval, and taking the sampling gain parameter Gx corresponding to the interval as a target sampling gain parameter.
In this embodiment, a target sampling gain parameter matched with the physical information to be detected can be determined according to the pre-sampling value, so that an excessively high or excessively low sampling gain parameter is avoided, and a data basis is provided for improving the detection accuracy of the sensor.
In an embodiment, as shown in fig. 2, the obtaining of the pre-sampling value corresponding to the pre-sampled physical information to be measured may include the following steps:
In a specific implementation, after the pre-sampling, an initial sampling digital quantity corresponding to the pre-sampled physical information to be detected may be determined, and the initial sampling digital quantity may be a digital quantity used by the sensor during the pre-sampling.
During the pre-sampling, a sampling gain parameter can be selected and then the physical information to be detected is pre-sampled, and then the pre-sampling gain parameter can be obtained after the pre-sampled physical information to be detected is obtained. The gain parameter used in the pre-sampling may be a parameter that has a gain effect, such as a sampling gain parameter greater than 1, or a parameter that has no gain effect, such as a sampling gain parameter equal to 1.
And 203, converting the initial sampling digital quantity according to the pre-sampling gain parameter to obtain a pre-sampling value corresponding to a preset gain standard.
As an example, the preset gain criterion may be a preset uniform gain criterion, for example, the preset gain criterion of each pre-sampling value may be a sampling value without a gain effect, for example, a sampling value corresponding to a sampling gain parameter of 1, and of course, the preset gain criterion may also be uniformly converted into sampling values under other sampling gain parameters.
Because the conversion relation exists between the sampling digital quantity and the sampling value, after the pre-sampling gain parameter is obtained, the initial sampling digital quantity can be converted according to the pre-sampling gain parameter, and the pre-sampling value corresponding to the preset gain standard is obtained. For example, the following formula may be used to calculate the pre-sampled value:
Fpre＝Dpre/Gn
wherein, FpreFor pre-sampled values, DpreTo initially sample a digital quantity, GnIs a pre-sampling gain parameter.
In this embodiment, an initial sampling digital quantity corresponding to the pre-sampled physical information to be measured is obtained, a pre-sampling gain parameter corresponding to the initial sampling digital quantity is obtained, the initial sampling digital quantity is converted according to the pre-sampling gain parameter, a pre-sampling value corresponding to a preset gain standard is obtained, the initial sampling digital quantity can be converted to a pre-sampling value under the same reference standard, and a basis is provided for accurately determining a sampling interval and the corresponding sampling gain parameter.
In one embodiment, the method may further comprise the steps of:
acquiring a measuring range corresponding to the sensor and a total sampling digit number corresponding to an analog-to-digital conversion module in the sensor; dividing the measuring range into a plurality of measuring range intervals, and acquiring sampling intervals corresponding to the measuring range intervals according to the total sampling digit number; and acquiring a plurality of different sampling gain parameters, and respectively associating the sampling gain parameters with corresponding sampling intervals.
In practical applications, the sensor has a corresponding range, i.e. a measurement range of physical information, e.g. a sensor for measuring current, which may correspond to a range of 0 to xA (amperes), and a sensor for measuring voltage, which may correspond to a range of 0 to yV (volts).
The analog-digital conversion module in the sensor has corresponding total sampling digit number, and under the full-scale measurement state, the physical information can be acquired by using all the sampling digit numbers to obtain corresponding sampling digit quantity, and the used sampling digit number and the sampling digit quantity are different when different physical information to be detected is sampled. For example, taking a current sensor with a total sampling bit number of 12 bits and a rated range of 600A in the analog-to-digital conversion module as an example, at a full range, the corresponding sampling digital quantity is 2048, and when the actual current is lower than 300A, the corresponding sampling digital quantity of the sensor is less than 1000.
After the measuring range is determined, the measuring range can be divided into a plurality of measuring range intervals, and the sampling interval corresponding to each measuring range interval is determined according to the total sampling digit number. Specifically, the sampling interval may be determined according to a sampling digital quantity, where a conversion relationship exists between the sampling digital quantity and the sampling value, and the sampling digital quantity may be a sampling value under a specific data type, that is, a sampling value of an integer type. Based on this, the sampling interval can be determined according to the range interval and the total sampling digit number, for example, for the range interval 0-300A, the corresponding sampling digit quantity can be calculated when the sensor measures 300A according to the total sampling digit number and the range, and the sampling digit quantity is used as the sampling value of the sampling interval boundary.
After obtaining the plurality of sampling intervals, a plurality of preset sampling gain parameters can be obtained, and each sampling gain parameter is associated with the corresponding sampling interval.
In one embodiment, the sampling gain parameter may be inversely related to the sampling interval, i.e. as the sampling value of the sampling interval increases, the corresponding sampling gain parameter decreases. Specifically, since the quantization error caused by each digital quantity is fixed, the relative error caused by the quantization error gradually increases as the physical information to be measured decreases. Based on the above, when the first to-be-detected physical information is small and the corresponding sampling interval is large, the first sampling gain parameter can be adopted for sampling, and when the second to-be-detected physical information is large and the corresponding sampling interval is large, the second sampling gain parameter can be sampled for sampling, wherein the to-be-detected physical information is smaller than the second to-be-detected physical information, and the first sampling gain parameter is larger than the second sampling gain parameter.
In this embodiment, by associating different sampling gain parameters with different sampling intervals, the gain parameters can be dynamically adjusted according to the size of the physical information to be detected in the measurement process, so as to provide a data basis for improving the detection accuracy of the physical information to be detected.
In an embodiment, the amplifying the signal input to the sensor according to the target sampling gain parameter and performing data acquisition to obtain a current sampling digital quantity may include the following steps:
determining an amplification factor according to the target sampling gain parameter; and amplifying the signal input into the sensor according to the amplification factor, and carrying out data acquisition on the amplified signal to obtain the current sampling digital quantity.
After the target sampling gain parameter is obtained, the target sampling gain parameter can be determined as an amplification factor for amplifying the input signal, the signal output to the sensor is amplified by the amplification factor, and then data acquisition can be performed on the amplified signal to obtain the current digital quantity. By amplifying the input signal, the sampling bit number in the analog-to-digital conversion module can be fully utilized, so that the quantization error caused by 1 bit of the digital quantity can be reduced.
In the embodiment, the amplification factor is determined according to the target sampling gain parameter, and then the signal input into the sensor is amplified and data is acquired to obtain the current sampling digital quantity, so that the sampling digit in the sensor can be effectively utilized, the measurement error is reduced, and the detection precision is improved.
In an embodiment, the scaling the current sampling digital quantity to obtain a corresponding current sampling value may include the following steps:
determining a reduction multiple according to the target sampling gain parameter; and converting the current sampling digital quantity according to the reduction multiple to obtain a current sampling value corresponding to a preset gain standard.
Specifically, since the current sampled digital quantity is a digital quantity obtained for the amplified signal, the current sampled digital quantity is an amplified digital quantity with respect to the true sampled digital quantity of the physical information to be measured. Based on the method, the reduction factor can be determined according to the target sampling gain parameter, and dimension conversion and reduction of the amplification factor are carried out on the sampling digital quantity according to the reduction factor to obtain a sampling value under the preset gain standard, namely the current sampling value. For example, the current sample value may be determined by the following formula:
Ffo＝Dfo/Gn
wherein, FfoFor the current sample value, DfoFor the currently sampled digital quantity, GnIs the reduction multiple.
In this embodiment, the current sampling digital quantity is converted according to the reduction multiple to obtain a current sampling value corresponding to the preset gain standard, so that physical information to be measured corresponding to real data and having higher detection accuracy can be obtained, and the measurement effect of the sensor is effectively improved.
As shown in fig. 3, the physical information to be measured is measured by the sensing element and conditioned by the conditioning circuit, and then converted into an analog electrical signal to be measured, after the analog electrical signal to be measured is obtained, the analog electrical signal to be measured can be amplified according to the target sampling gain parameter, and then the amplified analog electrical signal to be measured is subjected to data acquisition by the analog-to-digital conversion module (i.e., the analog-to-digital conversion core in the figure), and the acquired data is calculated and converted by combining with the coefficient adjustment algorithm, so as to obtain the current sampling value.
In order to enable those skilled in the art to better understand the above steps, the following is an example to illustrate the embodiments of the present application, but it should be understood that the embodiments of the present application are not limited thereto.
Taking a current sensor with 12 bits of analog-to-digital conversion module as an example, the rated range is 600A, the output of the sensing element is between 0-600mV, and the reference voltage of the analog-to-digital conversion module is 0.6V, so that the quantization error of the analog-to-digital conversion module is 600/2048-0.293A (error caused by 1-bit digital quantity). When the current measured by the sensor is more than 100A, the measurement error is within 0.29 percent, and when the current measured by the sensor is less than 100A, the relative measurement error caused by the quantization error is increased along with the decrease of the current.
In this embodiment, two sampling intervals, respectively [0,1000], can be set for the span of the sensor]And (1000,2048)]Respectively corresponding to the sampling gain parameters G1＝2、G2＝1。
When the sampled digital value is lower than 1000, the actual current is lower than 300A, and G can be used as the sampling gain parameter1The adc quantization error is reduced to 600/(2048 × 2) ═ 0.146A (error due to 1 bit of digital quantity).
In the process of determining the physical information to be measured, the digital sensor can perform two-stage sampling, namely pre-sampling and formal sampling. In the pre-sampling step, the gain of the analog-to-digital conversion module can be set to G2Namely, the analog electrical signal to be measured is not amplified, the initial sampling digital quantity corresponding to the analog electrical signal to be measured in the original state is determined, and the pre-sampling value when the sampling gain parameter is 1 is obtained through calculation, specifically, the following formula is used for calculating:
Fpre＝Dpre/G2
after obtaining the pre-sampled value FpreThen, the pre-sampling value F can be judgedpreSelecting corresponding sampling gain parameter for sampling in the belonged interval, specifically, if FpreIf the current is greater than 1000A, the current is selected to be G2The quantization error corresponding to the target sampling gain parameter of the sensor formal sampling link is 600/2048 ═ 0.293A.
If FpreLess than or equal to 1000, i.e. when the current to be measured is less than or equal to 300A, G is selected1As a target sampling gain parameter of the sensor formal sampling link, the corresponding quantization error is 600/(2048 × 2) ═ 0.146A.
After formal sampling, the current sampling digital quantity can be obtained, and the current sampling value when the sampling gain parameter is 1 can be obtained through formula conversion, wherein the calculation formula is as follows:
Ffo＝Dfo/G1
after the current sampling value is obtained, the physical information to be measured can be calculated according to the sampling value.
It should be understood that although the steps in the flowcharts of fig. 1 and 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1 and 2 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 4, there is provided an apparatus for acquiring physical information to be measured, including:
a target sampling gain parameter obtaining module 401, configured to obtain a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
a current sampling digital quantity obtaining module 402, configured to amplify the signal input to the sensor according to the target sampling gain parameter, and perform data acquisition to obtain a current sampling digital quantity;
and a to-be-tested physical information determining module 403, configured to convert the current sampling digital quantity to obtain a corresponding current sampling value, and determine to-be-tested physical information according to the current sampling value.
In one embodiment, the current sampling digital quantity obtaining module 402 includes:
the amplification factor determining submodule is used for determining the amplification factor according to the target sampling gain parameter;
and the signal amplification submodule is used for amplifying the signal input into the sensor according to the amplification factor and carrying out data acquisition on the amplified signal to obtain the current sampling digital quantity.
In one embodiment, the module 403 for determining physical information to be tested includes:
the reduction factor determining submodule is used for determining the reduction factor according to the target sampling gain parameter;
and the conversion submodule is used for converting the current sampling digital quantity according to the reduction multiple to obtain a current sampling value corresponding to a preset gain standard.
In one embodiment, the apparatus further comprises:
the device comprises a pre-sampling value acquisition module, a pre-sampling value acquisition module and a pre-sampling value acquisition module, wherein the pre-sampling value acquisition module is used for acquiring a pre-sampling value corresponding to pre-sampled physical information to be detected;
the sampling interval acquisition module is used for acquiring a plurality of preset sampling intervals; each sampling interval corresponds to different sampling gain parameters;
and the target sampling gain parameter determining module is used for determining a matched sampling interval from the plurality of sampling intervals according to the pre-sampling value and taking the sampling gain parameter corresponding to the sampling interval as a target sampling gain parameter.
In one embodiment, the pre-sampling value obtaining module includes:
the initial sampling digital quantity acquisition submodule is used for acquiring initial sampling digital quantity corresponding to the pre-sampled physical information to be detected;
the pre-sampling gain parameter acquisition module is used for acquiring pre-sampling gain parameters corresponding to the initial sampling digital quantity; the pre-sampling gain parameter is a sampling gain parameter used when the sensor performs pre-sampling on the physical information to be detected;
and the pre-sampling value determining submodule is used for converting the initial sampling digital quantity according to the pre-sampling gain parameter to obtain a pre-sampling value corresponding to a preset gain standard.
In one embodiment, the apparatus further comprises:
the range acquisition module is used for acquiring the range corresponding to the sensor and the total sampling digit number corresponding to the analog-to-digital conversion module in the sensor;
the sampling interval determining module is used for dividing the measuring range into a plurality of measuring range intervals and acquiring the sampling interval corresponding to each measuring range interval according to the total sampling digit number;
and the association module is used for acquiring a plurality of different sampling gain parameters and associating the sampling gain parameters with corresponding sampling intervals respectively.
In one embodiment, the sampling gain parameter is inversely related to the sampling interval.
For the specific definition of the device for acquiring physical information to be measured, reference may be made to the above definition of the method for acquiring physical information to be measured, and details are not described here. All or part of the modules in the device for acquiring physical information to be detected can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a sensor, the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, low-power-consumption Bluetooth, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method for acquiring physical information to be measured. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
amplifying the signal input into the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity;
and converting the current sampling digital quantity to obtain a corresponding current sampling value, and determining the physical information to be detected according to the current sampling value.
In one embodiment, the processor, when executing the computer program, also performs the other steps in the above embodiments.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
amplifying the signal input into the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity;
and converting the current sampling digital quantity to obtain a corresponding current sampling value, and determining the physical information to be detected according to the current sampling value.
In one embodiment, the computer program when executed by the processor also performs the other steps in the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for acquiring physical information to be measured is characterized by comprising the following steps:
acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
amplifying the signal input into the sensor according to the target sampling gain parameter, and performing data acquisition to obtain a current sampling digital quantity;
and converting the current sampling digital quantity to obtain a corresponding current sampling value, and determining the physical information to be detected according to the current sampling value.
2. The method of claim 1, wherein the amplifying the signal inputted to the sensor according to the target sampling gain parameter and performing data acquisition to obtain a current sampling digital quantity comprises:
determining an amplification factor according to the target sampling gain parameter;
and amplifying the signal input into the sensor according to the amplification factor, and carrying out data acquisition on the amplified signal to obtain the current sampling digital quantity.
3. The method of claim 1 or 2, wherein said scaling said current sample digital quantity to obtain a corresponding current sample value comprises:
determining a reduction multiple according to the target sampling gain parameter;
and converting the current sampling digital quantity according to the reduction multiple to obtain a current sampling value corresponding to a preset gain standard.
4. The method of claim 1 or 2, further comprising:
acquiring a pre-sampling value corresponding to pre-sampled physical information to be detected;
acquiring a plurality of preset sampling intervals; each sampling interval corresponds to different sampling gain parameters;
and according to the pre-sampling value, determining a matched sampling interval from the plurality of sampling intervals, and taking a sampling gain parameter corresponding to the sampling interval as a target sampling gain parameter.
5. The method according to claim 4, wherein the obtaining of the pre-sampling value corresponding to the pre-sampled physical information to be tested comprises:
acquiring initial sampling digital quantity corresponding to pre-sampled physical information to be detected;
acquiring a pre-sampling gain parameter corresponding to the initial sampling digital quantity; the pre-sampling gain parameter is a sampling gain parameter used when the sensor performs pre-sampling on the physical information to be detected;
and converting the initial sampling digital quantity according to the pre-sampling gain parameter to obtain a pre-sampling value corresponding to a preset gain standard.
6. The method of claim 4, further comprising:
acquiring a measuring range corresponding to the sensor and a total sampling digit number corresponding to an analog-to-digital conversion module in the sensor;
dividing the measuring range into a plurality of measuring range intervals, and acquiring sampling intervals corresponding to the measuring range intervals according to the total sampling digit number;
and acquiring a plurality of different sampling gain parameters, and respectively associating the sampling gain parameters with corresponding sampling intervals.
7. The method of claim 6, wherein the sampling gain parameter is inversely related to the sampling interval.
8. An apparatus for acquiring physical information to be measured, the apparatus comprising:
the target sampling gain parameter acquisition module is used for acquiring a target sampling gain parameter; the target sampling gain parameter is determined according to a pre-sampling value acquired by a sensor, the sensor is provided with a plurality of corresponding sampling intervals, each sampling interval corresponds to different sampling gain parameters, and the target sampling gain parameter is a parameter corresponding to the sampling interval to which the pre-sampling value belongs;
the current sampling digital quantity acquisition module is used for amplifying the signal input into the sensor according to the target sampling gain parameter and carrying out data acquisition to obtain a current sampling digital quantity;
and the to-be-tested physical information determining module is used for converting the current sampling digital quantity to obtain a corresponding current sampling value and determining to-be-tested physical information according to the current sampling value.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659987A (en) * | 2021-08-20 | 2021-11-16 | 合肥御微半导体技术有限公司 | Signal processing device and method thereof |
| CN113765521A (en) * | 2021-05-25 | 2021-12-07 | 山东浪潮科学研究院有限公司 | Data acquisition method |
| CN116137532A (en) * | 2023-02-06 | 2023-05-19 | 广芯微电子（广州）股份有限公司 | Method, device, equipment and medium for improving sampling value precision of analog-to-digital converter |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5450494A (en) * | 1992-08-05 | 1995-09-12 | Mitsubishi Denki Kabushiki Kaisha | Automatic volume controlling apparatus |
| CN1665128A (en) * | 2005-03-30 | 2005-09-07 | 哈尔滨工业大学 | Multi-level auto-gain control integrated circuit system having gain indication function |
| CN102680910A (en) * | 2012-05-15 | 2012-09-19 | 华为技术有限公司 | Supply current detection method and circuit |
| US20130033316A1 (en) * | 2011-08-04 | 2013-02-07 | Sony Corporation | Automatic step variable attenuator and radio communication device |
| CN103235172A (en) * | 2013-04-24 | 2013-08-07 | 常熟开关制造有限公司(原常熟开关厂） | Current measuring method and measuring device |
| CN103742591A (en) * | 2013-12-25 | 2014-04-23 | 北京化工大学 | Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery |
| US20140200850A1 (en) * | 2013-01-17 | 2014-07-17 | Honeywell International Inc. | Field device including a software configurable analog to digital converter system |
| CN104730573A (en) * | 2015-03-19 | 2015-06-24 | 桂林电子科技大学 | Acquisition method and device for micro-seismic signals within large dynamic range |
| CN105372483A (en) * | 2015-12-10 | 2016-03-02 | 华中科技大学 | Radio frequency voltage and current detection device |
| CN106154130A (en) * | 2016-08-17 | 2016-11-23 | 山东理工大学 | A kind of photo-electric surge voltage test device and method |
| CN106483484A (en) * | 2015-08-27 | 2017-03-08 | 比亚迪股份有限公司 | Sampling scaling method and device |
| CN106597068A (en) * | 2015-10-19 | 2017-04-26 | 沈阳新松机器人自动化股份有限公司 | Current sampling circuit and sampling method |
| CN106841734A (en) * | 2016-12-27 | 2017-06-13 | 深圳市沃特玛电池有限公司 | A kind of current sensor and electric current detecting method based on current divider |
| CN108111170A (en) * | 2017-12-06 | 2018-06-01 | 电子科技大学 | A kind of Larger Dynamic range signal harvester |
| CN109444530A (en) * | 2018-12-13 | 2019-03-08 | 浙江阿海珐配电自动化有限公司 | The method of sampling and device of AC signal |
| CN111555727A (en) * | 2020-04-24 | 2020-08-18 | 苏州真感微电子科技有限公司 | High-gain low-noise switched capacitor adjustable gain amplifier |
| CN111562521A (en) * | 2020-05-27 | 2020-08-21 | 南京信息工程大学 | Signal acquisition method of range adaptive power system |
| CN111579852A (en) * | 2020-07-02 | 2020-08-25 | 南方电网数字电网研究院有限公司 | Current collecting device, mounting method and dismounting method |
| CN111756377A (en) * | 2020-07-29 | 2020-10-09 | 上腾科技(广州)有限公司 | Signal acquisition circuit and signal sampling method of gain adaptive transformation |
-
2020
- 2020-12-09 CN CN202011426514.5A patent/CN112688687B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5450494A (en) * | 1992-08-05 | 1995-09-12 | Mitsubishi Denki Kabushiki Kaisha | Automatic volume controlling apparatus |
| CN1665128A (en) * | 2005-03-30 | 2005-09-07 | 哈尔滨工业大学 | Multi-level auto-gain control integrated circuit system having gain indication function |
| US20130033316A1 (en) * | 2011-08-04 | 2013-02-07 | Sony Corporation | Automatic step variable attenuator and radio communication device |
| CN102680910A (en) * | 2012-05-15 | 2012-09-19 | 华为技术有限公司 | Supply current detection method and circuit |
| US20140200850A1 (en) * | 2013-01-17 | 2014-07-17 | Honeywell International Inc. | Field device including a software configurable analog to digital converter system |
| CN103235172A (en) * | 2013-04-24 | 2013-08-07 | 常熟开关制造有限公司(原常熟开关厂） | Current measuring method and measuring device |
| CN103742591A (en) * | 2013-12-25 | 2014-04-23 | 北京化工大学 | Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery |
| CN104730573A (en) * | 2015-03-19 | 2015-06-24 | 桂林电子科技大学 | Acquisition method and device for micro-seismic signals within large dynamic range |
| CN106483484A (en) * | 2015-08-27 | 2017-03-08 | 比亚迪股份有限公司 | Sampling scaling method and device |
| CN106597068A (en) * | 2015-10-19 | 2017-04-26 | 沈阳新松机器人自动化股份有限公司 | Current sampling circuit and sampling method |
| CN105372483A (en) * | 2015-12-10 | 2016-03-02 | 华中科技大学 | Radio frequency voltage and current detection device |
| CN106154130A (en) * | 2016-08-17 | 2016-11-23 | 山东理工大学 | A kind of photo-electric surge voltage test device and method |
| CN106841734A (en) * | 2016-12-27 | 2017-06-13 | 深圳市沃特玛电池有限公司 | A kind of current sensor and electric current detecting method based on current divider |
| CN108111170A (en) * | 2017-12-06 | 2018-06-01 | 电子科技大学 | A kind of Larger Dynamic range signal harvester |
| CN109444530A (en) * | 2018-12-13 | 2019-03-08 | 浙江阿海珐配电自动化有限公司 | The method of sampling and device of AC signal |
| CN111555727A (en) * | 2020-04-24 | 2020-08-18 | 苏州真感微电子科技有限公司 | High-gain low-noise switched capacitor adjustable gain amplifier |
| CN111562521A (en) * | 2020-05-27 | 2020-08-21 | 南京信息工程大学 | Signal acquisition method of range adaptive power system |
| CN111579852A (en) * | 2020-07-02 | 2020-08-25 | 南方电网数字电网研究院有限公司 | Current collecting device, mounting method and dismounting method |
| CN111756377A (en) * | 2020-07-29 | 2020-10-09 | 上腾科技(广州)有限公司 | Signal acquisition circuit and signal sampling method of gain adaptive transformation |
Non-Patent Citations (3)
| Title |
|---|
| TING-KUEI KUAN 等: "A Bang Bang Phase-Locked Loop Using Automatic Loop Gain Control and Loop Latency Reduction Techniques", 《IEEE JOURNAL OF SOLID-STATE CIRCUITS》 * |
| 宗伟林: "利用ADC0809的多通道结构实现自动量程转换", 《自动化仪表》 * |
| 郝建明 等: "傅里叶变换红外光谱仪干涉信号采集技术研究", 《自动化技术与应用》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765521A (en) * | 2021-05-25 | 2021-12-07 | 山东浪潮科学研究院有限公司 | Data acquisition method |
| CN113765521B (en) * | 2021-05-25 | 2023-05-16 | 山东浪潮科学研究院有限公司 | Data acquisition method |
| CN113659987A (en) * | 2021-08-20 | 2021-11-16 | 合肥御微半导体技术有限公司 | Signal processing device and method thereof |
| CN116137532A (en) * | 2023-02-06 | 2023-05-19 | 广芯微电子（广州）股份有限公司 | Method, device, equipment and medium for improving sampling value precision of analog-to-digital converter |
| CN116137532B (en) * | 2023-02-06 | 2023-09-08 | 广芯微电子（广州）股份有限公司 | Method, device, equipment and medium for improving sampling value precision of analog-to-digital converter |
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