CN113081034A - Ultrasonic height measuring method, device, measuring instrument and storage medium - Google Patents
Ultrasonic height measuring method, device, measuring instrument and storage medium Download PDFInfo
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Abstract
The invention discloses an ultrasonic height measuring method, an ultrasonic height measuring device, an ultrasonic height measuring instrument and a storage medium. The method comprises the following steps: firstly, setting a lowest height limit LL and a highest height limit LH; secondly, performing one-time measurement by using ultrasonic waves to obtain an array D and an array V, wherein the array D stores the target distance detected in the one-time measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D; thirdly, calculating to obtain a height array H; deleting the numerical value smaller than LL or larger than LH in the array H; fifthly, if the number of the array H is not zero, selecting the value of the maximum value in the array V corresponding to the array H and storing the value in the array R; sixthly, circularly executing the steps from two to five until the number of the elements of the array R reaches a preset value; and seventhly, sorting, and averaging the numerical values of the preset number in the middle of the sorted arrays to obtain the final height measurement value. The method eliminates the invalid targets such as the bulge and the like measured by the ultrasonic module, and improves the measurement precision.
Description
Technical Field
The embodiment of the invention relates to the technical field of body side devices, in particular to an ultrasonic height measuring method, device, measuring instrument and storage medium.
Background
There are many ultrasonic height and weight measuring devices on the market, and the structure of such ultrasonic height and weight measuring devices generally includes: the supporting column comprises a bottom plate, a supporting column and a top plate, wherein two ends of the supporting column are respectively connected with the bottom plate and the top plate; the ultrasonic measurement module is arranged on the top plate and is positioned on one side, close to the bottom plate, of the top plate; the support column is provided with a support column, and the support column is provided with a function box, wherein a display unit, a voice unit, a data transmission unit and a control unit are arranged in the function box. The ultrasonic measuring module measures the distance between the top plate and the head of the target, transmits the distance to the control unit, and then the internal program of the control unit subtracts the distance between the top plate and the target by using the distance between the top plate and the bottom plate to obtain the height of the measuring target.
The ultrasonic measurement module usually confirms the target through the amplitude of the echo, and the program can calculate the distance from the target to the ultrasonic measurement module by setting a reference amplitude Vs, wherein the peak which exceeds Vs firstly in one measurement is regarded as the peak of the echo of the target to be measured, and the distance from the target to the ultrasonic measurement module can be calculated through the interval between the time T0 when the ultrasonic wave is emitted and the time T1 when the echo is received.
Due to the absorption effect of a human body on ultrasonic waves, ultrasonic echoes reflected by some female measuring users with thick hair and children with low height may be weak and cannot reach the set reference amplitude Vs, the ultrasonic echoes reflected by the multifunctional box are strong, and the ultrasonic module sends the detected distance of the multifunctional box to an application program, so that the height measurement is abnormal.
To solve this problem, the current practice generally reduces the reference amplitude Vs to enable it to detect a weaker echo, or increases the amplification factor of the echo signal to enable the weaker echo to reach the reference amplitude Vs, but because of the existence of the protrusion of the retractable supporting column and some interference impurities around, these targets also reflect weaker ultrasonic waves, and both of these two ways have the constraint angle that amplifies the ultrasonic detection, so that the module detects the interference objects at and around the protrusion of the supporting column, which makes it difficult to determine the value of Vs or the amplification factor. However, the currently used ultrasonic measurement module only returns the detected nearest target distance value, and the application program has difficulty in rejecting the returned value.
Disclosure of Invention
The embodiment of the invention provides an ultrasonic height measuring method, an ultrasonic height measuring device, a measuring instrument and a storage medium, and aims to eliminate invalid targets such as a projection of a telescopic support column and a multifunctional box measured by an ultrasonic module in a master control application program through various known information.
In a first aspect, an embodiment of the present invention provides an ultrasonic height measuring method, which is applied to an ultrasonic height measuring instrument, where the measuring instrument includes a bottom plate, a supporting pillar, and a top plate, and two ends of the supporting pillar are respectively connected to the bottom plate and the top plate; an ultrasonic detection device is arranged on the top plate and is positioned on one surface, facing the bottom plate, of the top plate; the support column is provided with a function box, a display screen and a control unit are arranged in the function box, and the control unit is respectively connected with the ultrasonic detection device and the display screen; the control unit executes a computer program corresponding to the measurement method, and the measurement method includes:
step one, setting a lowest height limit LL and a highest height limit LH of a measured height limit range according to a preset rule;
secondly, performing primary measurement by using an ultrasonic detection device, and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of a control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D;
respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
deleting the numerical value smaller than LL or larger than LH in the array H, and deleting the corresponding voltage peak value in the array V;
judging the number of elements in the array H, if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H, and storing the value as the target height into the array R;
step six, circularly executing the step two to the step five until the number of the elements of the array R reaches a preset value;
and seventhly, sorting the numerical values in the array R, and averaging the numerical values of the preset number in the middle of the sorted array to obtain the final height measurement value.
Optionally, after the seventh step, the method further includes:
and step eight, storing the final height measurement value into a queue with the size of N, wherein N is larger than 2 and is a positive integer, if the difference of the maximum value and the minimum value in the queue is within a preset range and the queue is full, taking the average value of all values in the queue as a new final height measurement value, if the difference of the maximum value and the minimum value in the queue is within the preset range but the queue is not full, continuously and circularly executing the steps two to seven until the queue is full, and if the difference of the maximum value and the minimum value in the queue exceeds the preset range, emptying the queue and repeatedly executing the steps two to seven.
Optionally, in the fifth step, after determining the number of elements in the array H, the method further includes:
if the number of the array H is zero, a fixed value or a characteristic value is assigned to the array R.
Optionally, in the fifth step, after determining the number of elements in the array H, the method further includes:
if the number of the array H is zero, recording the result of the measurement as 0, and executing the steps from two to four again;
if the number of the array H is one, taking the result of the measurement as the target height and storing the result into the array R;
if the number of the array H is more than one, further filtering specifically comprises:
judging the number of values in the preset range, which are not centered on LL or LH, of the numerical values in the array H;
if the number is zero, selecting the value of the maximum peak value in the array V corresponding to the array H, if the peak value is larger than a preset threshold value, storing the value of the peak value corresponding to the array H as the target height into the array R, if the peak value does not exceed the preset threshold value, recording the result of the measurement as 0, and executing the steps two to four again;
if the number is one, storing the numerical value which is not centered on LL or LH and is within a preset range as the target height into an array R;
if the number is two, selecting the value of the maximum peak value corresponding to the array H from the values not taking LL or LH as the center and in the preset range as the target height to store in the array R.
Optionally, after the sixth step, the method further includes:
judging whether the frequency of recording the measurement result as 0 exceeds a preset frequency or not;
if yes, the array R is judged to be invalid, and the steps from two to five are executed in a circulating mode.
Optionally, the first step includes:
obtaining the first lowest height L1 and the first highest height L2 of the product application range of the measuring instrument;
measuring the weight W of the human body, and calculating the second minimum height according to the weight W and the BMI limit range
Height of second highest
The larger of L1 and L3 is chosen as the lowest height limit LL and the smaller of L2 and L4 is chosen as the highest height limit LH.
Optionally, after the seventh step, the method further includes:
the display screen displays the final height measurement.
In a second aspect, an embodiment of the present invention further provides an ultrasonic height measuring device, including:
the height limiting unit is used for setting a lowest height limit LL and a highest height limit LH of the measured height limiting range according to a preset rule;
the ultrasonic detection device comprises an ultrasonic detection device, a sound wave measurement unit and a control unit, wherein the ultrasonic detection device is used for carrying out primary measurement, and the sound wave measurement unit is used for sending data to arrays D (D1, D2, D3 … Dn) and arrays V (V1, V2, V3 … Vn) of the control unit, wherein the arrays D store the target distance detected in the primary measurement of ultrasonic waves, and the arrays V store echo voltage peak values corresponding to all the distances in the arrays D;
the height calculating unit is used for respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
the numerical value deleting unit is used for deleting numerical values smaller than LL or larger than LH in the array H and deleting corresponding voltage peak values in the array V;
the numerical value screening unit is used for judging the number of elements in the array H, and if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H as the target height and storing the value in the array R;
the circular execution unit is used for circularly executing the acoustic wave measurement unit to the numerical value screening unit until the number of the elements of the array R reaches a preset value;
and the sorting selection unit is used for sorting the numerical values in the array R, averaging the numerical values of the preset number in the middle of the sorted array, and obtaining the final height measurement value.
In a third aspect, an embodiment of the present invention further provides an ultrasonic height measuring apparatus, including a bottom plate, a supporting pillar, and a top plate, where two ends of the supporting pillar are respectively connected to the bottom plate and the top plate; an ultrasonic detection device is arranged on the top plate and is positioned on one surface, facing the bottom plate, of the top plate; the support column is provided with a function box, a display screen and a control unit are arranged in the function box, and the control unit is respectively connected with the ultrasonic detection device and the display screen; the control unit comprises a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the ultrasonic height measurement method of any of the above embodiments when executing the computer program.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the ultrasonic height measuring method in any one of the above embodiments.
According to the technical scheme of the embodiment of the invention, the distances of a plurality of targets detected by the ultrasonic measurement module are filtered and screened, so that invalid targets such as the projection of the telescopic support column and the multifunctional box measured by the ultrasonic measurement module can be eliminated in an application program more conveniently through various known information.
Drawings
FIG. 1 is a schematic structural diagram of an ultrasonic height measuring device according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart of an ultrasonic height measuring method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an ultrasonic height measuring device according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, a first minimum height may be referred to as a second minimum height, and similarly, a second minimum height may be referred to as a first minimum height, without departing from the scope of the present application. The first minimum height and the second minimum height are both the minimum heights, but are not the same minimum height. The terms "first", "second", etc. are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example one
FIG. 1 is a schematic structural diagram of an ultrasonic height measuring instrument according to an embodiment of the present invention. As shown in fig. 1, the ultrasonic height measuring apparatus of the present embodiment includes a bottom plate 800, a supporting column 500 and a top plate 400, wherein two ends of the supporting column 500 are respectively connected to the bottom plate 800 and the top plate 400; an ultrasonic detection device 100 is arranged on the top plate 400, and the ultrasonic detection device 100 is positioned on one surface of the top plate 400 facing the bottom plate 800; a function box 700 is arranged on the support column 500, a display screen and a control unit are arranged in the function box 700, and the control unit is respectively connected with the ultrasonic detection device 100 and the display screen; the control unit executes a computer program corresponding to the measurement method.
In this embodiment, ultrasonic wave height measuring apparatu can also include the weighing module, following work flow has, the weighing module has pressure start function, in case after the weighing module accepted the pressure of certain degree, can awaken up whole measurement system, the control unit control display screen shows that the weight measures UI and the warning is weighed in the speech unit broadcast, next the weighing module begins to carry out weighing, and return weight data for the control unit, then control unit control speech unit and display element, switch height and measure pronunciation and show UI, and send measurement command to ultrasonic detection device 100, start height to measure. The ultrasonic detection device 100 emits ultrasonic waves downwards along the direction 200, measures the distance between the top plate 400 and the head of a target, transmits the distance to the control unit, then uses the distance between the top plate 400 and the bottom plate 800 to subtract the distance between the top plate 400 and the target by an internal program of the control unit to obtain the height of the measured target, and after the height measurement is finished, the control unit respectively controls the voice end element, the display unit and the data transmission unit to play the measurement result, displays the measurement result UI and transmits the data to a server or other terminal equipment. However, due to the existence of the retractable supporting column protrusion 600 and some interference impurities around the retractable supporting column protrusion, the height measurement is inaccurate because the interference objects at and around the supporting column protrusion are detected within the constraint angle 300 of the ultrasonic detection.
In order to improve the measurement accuracy, the ultrasonic height measuring apparatus provided by the embodiment of the present invention is used for executing the ultrasonic height measuring method provided by the embodiment of the present invention, and the ultrasonic height measuring method provided by the embodiment of the present invention is described in detail below.
FIG. 2 is a schematic flow chart of an ultrasonic height measurement method according to an embodiment of the present invention, which is applicable to the ultrasonic height measurement. The method of the embodiment of the invention can be executed by an ultrasonic height measuring device which can be realized by software and/or hardware and can be generally integrated in an ultrasonic height measuring instrument. Referring to fig. 2, the ultrasonic height measuring method of the embodiment of the invention specifically comprises the following steps:
step S110, setting a lowest height limit LL and a highest height limit LH of the measured height limit range according to a preset rule.
Specifically, initialization is performed first, and a data storage space is opened up: a. setting an array D to store the target distance detected in one ultrasonic measurement; b. setting an array H for storing the distance of a plurality of targets measured each time and converting the distance into a height value; c. setting the value of the echo amplitude corresponding to each height in an array V storage array H; d. setting an array R to store the height after each measurement is filtered; e. a COUNT variable COUNT is set which records the number of measurements.
The height measuring instrument of the embodiment can set basic height measurement limits of a first lowest height L1 and a first highest height L2 according to the structure of the height measuring instrument, represents that the product is only suitable for measuring the target with the actual height smaller than L2 and larger than L1, and obtains the product application ranges of the measuring instrument, namely the first lowest height L1 and the first highest height L2; then, according to the analysis of a large amount of human height and weight and BMI data, the human BMI is approximately maintained within the range of 10-55, and the BMI is the ratio of weight (Kg) to height (m) squared, the measuring instrument measures the weight W of the human body, and the second lowest height is calculated according to the weight W and the BMI limit range
Height of second highest
The larger of L1 and L3 is chosen as the lowest height limit LL and the smaller of L2 and L4 is chosen as the highest height limit LH.
And S120, carrying out primary measurement by using the ultrasonic detection device, and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of the control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D.
And S130, respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn).
Specifically, the ultrasonic wave is used for measuring once and is sent to an array D [ D1, D2 and D3 … Dn ] formed by distances of a plurality of targets and an array V [ V1, V2 and V3 … Vn ] of voltage peak values of echoes of the arrays D [ D1, D2 and D3 … Dn ], and a height array H [ H1, H2 and H3 … Hn ] is obtained by subtracting a plurality of distances sent back to the main control module by the ultrasonic wave measuring module in the control unit according to the distance Ds from the bottom plate to the top plate.
In step S140, values smaller than LL or larger than LH in the array H are deleted, and the corresponding voltage peak is deleted in the array V.
Specifically, after ultrasonic measurement is performed, data collaborative filtering is performed, the height in the data array H is filtered by using LH and LL, only the value smaller than LL or larger than LH in H is deleted, and the corresponding voltage peak value is deleted in the array V.
Further, as an optional embodiment, in order to reduce the influence of invalid targets such as the protrusion of the retractable support column and the multifunctional box, when data filtering is performed, an exclusion value is set for each invalid target, and when a value smaller than LL or larger than LH in the array H is deleted, a value within a preset range centered on the exclusion value of the invalid target is deleted at the same time. For example, if the distance between the ultrasonic wave and the multifunctional box is 50cm, and the exclusion value of the invalid target is 200cm by subtracting 50cm from the distance between the bottom plate and the top plate, the values between 195 and 205 in the array H are further deleted, and the corresponding voltage peak value is deleted in the array V.
And S150, judging the number of elements in the array H, and if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H as the target height and storing the value in the array R.
Specifically, the number of elements in the array H is judged, if no element exists in the array H, the fact that no reasonable target is detected in the measurement is shown, and a fixed value or a characteristic value is assigned to the array R [ COUNT ]; if the array H is not empty, the value in H corresponding to the maximum value in the array V is selected and stored as the target height in R [ COUNT ], and the COUNT is added by one.
As an optional embodiment, in addition to selecting the value in the array H corresponding to the maximum value in the array V and storing the value in the array H as the target height, the maximum value in the height array H can be selected and stored in the array R as the target height.
Step S160, the steps S120 to S150 are executed in a loop until the number of elements in the array R reaches a predetermined value.
Specifically, if COUNT is not greater than the preset value, the process returns to step S120 to continue reading the data of the ultrasonic probe, and when COUNT exceeds the set value, the COUNT value is cleared, the numerical values in the array R are sorted, and several values in the middle of the sorted array are averaged.
And S170, sorting the numerical values in the array R, and averaging the numerical values of the preset number in the sorted array to obtain the final height measurement value.
Specifically, after the data collaborative filtering, data smoothing is performed, if there is no need for data stability, the numerical values in the array R are sorted, and the numerical values of the preset number in the middle of the sorted array are averaged to obtain the final height measurement value.
And if the data needs to be subjected to stability judgment, storing the final height measurement value into a queue with the size of N, wherein N is larger than 2 and is a positive integer, taking the average value of all values in the queue as a new final height measurement value if the difference of the maximum value and the minimum value in the queue is within a preset range and the queue is full, continuing to circularly execute the steps from two to seven until the queue is full if the difference of the maximum value and the minimum value in the queue is within the preset range and the queue is not full, emptying the queue if the difference of the maximum value and the minimum value in the queue exceeds the preset range, and circularly executing the steps from two to seven again.
As an alternative embodiment, after the seventh step, the method further includes: the display screen displays the final height measurement.
As an optional embodiment, the data filtering of this embodiment is adapted to filter a plurality of target distance values detected by the ultrasonic module according to the weight calculation limit and the measurement range predetermined by the product, and store the targets within the measurement limit. In step five, after the number of elements in the array H is determined, the method further includes:
if the number of the array H is zero, recording the result of the measurement as 0, and executing the steps from two to four again;
if the number of the array H is one, taking the result of the measurement as the target height and storing the result into the array R;
if the number of the array H is more than one, further filtering specifically comprises:
judging the number of values in the preset range, which are not centered on LL or LH, of the numerical values in the array H;
if the number is zero, selecting the value of the maximum peak value in the array V corresponding to the array H, if the peak value is larger than a preset threshold value, storing the value of the peak value corresponding to the array H as the target height into the array R, if the peak value does not exceed the preset threshold value, recording the result of the measurement as 0, and executing the steps two to four again;
if the number is one, storing the numerical value which is not centered on LL or LH and is within a preset range as the target height into an array R;
if the number is two, selecting the value of the maximum peak value corresponding to the array H from the values not taking LL or LH as the center and in the preset range as the target height to store in the array R.
As an alternative embodiment, after the step six, the method further comprises: judging whether the frequency of recording the measurement result as 0 exceeds a preset frequency or not; if yes, the array R is judged to be invalid, and the steps from two to five are executed in a circulating mode. By judging the times that the measurement result is recorded as 0, the error is reduced, and the measurement precision is improved.
The invention designs a method for filtering and screening a plurality of target distances detected by an ultrasonic measuring module by using a plurality of information such as product structure information, human Body Mass Index (BMI), human body weight information, target reflection echo intensity and the like through using the ultrasonic module capable of measuring a plurality of targets and carrying out statistical analysis on a large number of human body height and weight data. The method can more conveniently eliminate invalid targets such as the projection of the telescopic supporting column, the multifunctional box and the like measured by the ultrasonic module in the application program through various known information.
Generally, the object which is deviated from the ultrasonic axis by a larger angle of 200 degrees and is farther away from the ultrasonic module reflects weaker ultrasonic echo, and during height measurement, the object to be measured is generally positioned on the axis of the ultrasonic module, so that the echo intensity of the object to be measured is generally stronger than that of a surrounding higher interfering object. According to the invention, surrounding targets can be eliminated through the echo amplitude corresponding to each target transmitted back by the ultrasonic wave module, so that the restraint effect on the radiation angle of the ultrasonic wave measurement module is realized.
Example two
The ultrasonic height measuring device provided by the embodiment of the invention can execute the ultrasonic height measuring method provided by any embodiment of the invention, has the corresponding functional modules and beneficial effects of the execution method, can be realized in a software and/or hardware (integrated circuit) mode, and can be generally integrated in an ultrasonic height measuring instrument. FIG. 3 is a schematic structural diagram of an ultrasonic height measuring device according to a second embodiment of the present invention. Referring to fig. 3, the ultrasonic height measuring device 200 according to the embodiment of the present invention may specifically include:
the height limiting unit 210 is used for setting a lowest height limit LL and a highest height limit LH of the measured height limiting range according to a preset rule;
the sound wave measuring unit 220 is used for carrying out primary measurement by using the ultrasonic detection device and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of the control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D;
the height calculating unit 230 is used for respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
a value deleting unit 240, configured to delete a value smaller than LL or larger than LH in the array H and delete a corresponding voltage peak in the array V;
the numerical value screening unit 250 is used for judging the number of elements in the array H, and if the number of the array H is not zero, selecting the value of the array H corresponding to the maximum numerical value in the array V, and storing the value as the target height into the array R;
a loop execution unit 260, configured to loop the acoustic wave measurement unit 220 to the numerical value screening unit 250 until the number of elements in the array R reaches a preset value;
and the sorting selection unit 270 is configured to sort the values in the array R, and average the preset number of values in the middle of the sorted array to obtain a final height measurement value.
Optionally, the apparatus 200 further includes:
and the stability judging unit is used for storing the final height measurement value into a queue with the size of N, wherein N is larger than 2 and is a positive integer, if the difference of the maximum value and the minimum value in the queue is within a preset range and the queue is full, the average value of all values in the queue is taken as a new final height measurement value, if the difference of the maximum value and the minimum value in the queue is within the preset range and the queue is not full, the steps two to seven are continuously and circularly executed until the queue is full, and if the difference of the maximum value and the minimum value in the queue exceeds the preset range, the queue is emptied and the steps two to seven are repeatedly and circularly executed.
Optionally, the numerical value screening unit 250 is further configured to, after determining the number of elements in the array H, further include: if the number of the array H is zero, a fixed value or a characteristic value is assigned to the array R.
Optionally, the numerical value screening unit 250 is further configured to, after determining the number of elements in the array H, further include:
if the number of the array H is zero, recording the result of the measurement as 0, and executing the steps from two to four again;
if the number of the array H is one, taking the result of the measurement as the target height and storing the result into the array R;
if the number of the array H is more than one, further filtering specifically comprises:
judging the number of values in the preset range, which are not centered on LL or LH, of the numerical values in the array H;
if the number is zero, selecting the value of the maximum peak value in the array V corresponding to the array H, if the peak value is larger than a preset threshold value, storing the value of the peak value corresponding to the array H as the target height into the array R, if the peak value does not exceed the preset threshold value, recording the result of the measurement as 0, and executing the steps two to four again;
if the number is one, storing the numerical value which is not centered on LL or LH and is within a preset range as the target height into an array R;
if the number is two, selecting the value of the maximum peak value corresponding to the array H from the values not taking LL or LH as the center and in the preset range as the target height to store in the array R.
Optionally, the apparatus 200 further includes:
an error screening unit for judging whether the number of times of recording the measurement result as 0 exceeds a preset number of times; if yes, the array R is judged to be invalid, and the steps from two to five are executed in a circulating mode.
Optionally, the height limiting unit 210 is further configured to:
obtaining the first lowest height L1 and the first highest height L2 of the product application range of the measuring instrument;
measuring the weight W of the human body, and calculating the second minimum height according to the weight W and the BMI limit range
Height of second highest
The larger of L1 and L3 is chosen as the lowest height limit LL and the smaller of L2 and L4 is chosen as the highest height limit LH.
Optionally, the apparatus 200 further includes:
and the display unit is used for displaying the final height measurement value on a display screen.
According to the technical scheme of the embodiment of the invention, the distances of a plurality of targets detected by the ultrasonic measurement module are filtered and screened, so that invalid targets such as the projection of the telescopic support column and the multifunctional box measured by the ultrasonic measurement module can be eliminated in an application program more conveniently through various known information.
EXAMPLE III
FIG. 1 is a schematic structural view of an ultrasonic height measuring instrument according to a third embodiment of the present invention, as shown in FIG. 1, the ultrasonic height measuring instrument includes a bottom plate 800, a supporting post 500 and a top plate 400, wherein two ends of the supporting post 500 are respectively connected to the bottom plate 800 and the top plate 400; an ultrasonic detection device 100 is arranged on the top plate 400, and the ultrasonic detection device 100 is positioned on one surface of the top plate 400 facing the bottom plate 800; a function box 700 is arranged on the support column 500, a display screen and a control unit are arranged in the function box 700, and the control unit is respectively connected with the ultrasonic detection device 100 and the display screen; the control unit comprises a memory, a processor and a computer program stored on the memory and executable on the processor.
The memory, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the ultrasonic height measurement method in the embodiments of the present invention (e.g., the height limiting unit 210, the acoustic wave measuring unit 220, the height calculating unit 230, the value deleting unit 240, the value screening unit 250, the loop executing unit 260, and the sorting selecting unit 270 in the ultrasonic height measuring device). The processor executes various functional applications and data processing of the device/terminal/server by running software programs, instructions and modules stored in the memory, so as to realize the ultrasonic height measuring method.
Namely:
step one, setting a lowest height limit LL and a highest height limit LH of a measured height limit range according to a preset rule;
secondly, performing primary measurement by using an ultrasonic detection device, and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of a control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D;
respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
deleting the numerical value smaller than LL or larger than LH in the array H, and deleting the corresponding voltage peak value in the array V;
judging the number of elements in the array H, if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H, and storing the value as the target height into the array R;
step six, circularly executing the step two to the step five until the number of the elements of the array R reaches a preset value;
and seventhly, sorting the numerical values in the array R, and averaging the numerical values of the preset number in the middle of the sorted array to obtain the final height measurement value.
Of course, the processor of the ultrasonic height measuring apparatus provided in the embodiments of the present invention is not limited to perform the method operations described above, and may also perform related operations in the ultrasonic height measuring method provided in any embodiments of the present invention.
The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory may further include memory located remotely from the processor, which may be connected to the device/terminal/server via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
According to the technical scheme of the embodiment of the invention, the distances of a plurality of targets detected by the ultrasonic measurement module are filtered and screened, so that invalid targets such as the projection of the telescopic support column and the multifunctional box measured by the ultrasonic measurement module can be eliminated in an application program more conveniently through various known information.
Example four
A fourth embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for ultrasonic height measurement, the method comprising:
step one, setting a lowest height limit LL and a highest height limit LH of a measured height limit range according to a preset rule;
secondly, performing primary measurement by using an ultrasonic detection device, and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of a control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D;
respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
deleting the numerical value smaller than LL or larger than LH in the array H, and deleting the corresponding voltage peak value in the array V;
judging the number of elements in the array H, if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H, and storing the value as the target height into the array R;
step six, circularly executing the step two to the step five until the number of the elements of the array R reaches a preset value;
and seventhly, sorting the numerical values in the array R, and averaging the numerical values of the preset number in the middle of the sorted array to obtain the final height measurement value.
Of course, the embodiment of the present invention provides a storage medium containing computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and can also perform related operations in the ultrasonic height measuring method provided in any embodiment of the present invention.
The computer-readable storage media of embodiments of the invention may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
According to the technical scheme of the embodiment of the invention, the distances of a plurality of targets detected by the ultrasonic measurement module are filtered and screened, so that invalid targets such as the projection of the telescopic support column and the multifunctional box measured by the ultrasonic measurement module can be eliminated in an application program more conveniently through various known information.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An ultrasonic height measuring method is characterized by being applied to an ultrasonic height measuring instrument, wherein the measuring instrument comprises a bottom plate, a supporting column and a top plate, and two ends of the supporting column are respectively connected with the bottom plate and the top plate; an ultrasonic detection device is arranged on the top plate and is positioned on one surface, facing the bottom plate, of the top plate; the support column is provided with a function box, a display screen and a control unit are arranged in the function box, and the control unit is respectively connected with the ultrasonic detection device and the display screen; the control unit executes a computer program corresponding to the measurement method, and the measurement method includes:
step one, setting a lowest height limit LL and a highest height limit LH of a measured height limit range according to a preset rule;
secondly, performing primary measurement by using an ultrasonic detection device, and sending the primary measurement to an array D (D1, D2, D3 … Dn) and an array V (V1, V2, V3 … Vn) of a control unit, wherein the array D stores the target distance detected in the primary measurement of the ultrasonic waves, and the array V stores the echo voltage peak value corresponding to each distance in the array D;
respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
deleting the numerical value smaller than LL or larger than LH in the array H, and deleting the corresponding voltage peak value in the array V;
judging the number of elements in the array H, if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H, and storing the value as the target height into the array R;
step six, circularly executing the step two to the step five until the number of the elements of the array R reaches a preset value;
and seventhly, sorting the numerical values in the array R, and averaging the numerical values of the preset number in the middle of the sorted array to obtain the final height measurement value.
2. The ultrasonic height measurement method of claim 1, further comprising, after step seven:
and step eight, storing the final height measurement value into a queue with the size of N, wherein N is larger than 2 and is a positive integer, if the difference of the maximum value and the minimum value in the queue is within a preset range and the queue is full, taking the average value of all values in the queue as a new final height measurement value, if the difference of the maximum value and the minimum value in the queue is within the preset range but the queue is not full, continuously and circularly executing the steps two to seven until the queue is full, and if the difference of the maximum value and the minimum value in the queue exceeds the preset range, emptying the queue and repeatedly executing the steps two to seven.
3. The ultrasonic height measuring method according to claim 1, wherein in step five, after determining the number of elements in the array H, the method further comprises:
if the number of the array H is zero, a fixed value or a characteristic value is assigned to the array R.
4. The ultrasonic height measuring method according to claim 1, wherein in step five, after determining the number of elements in the array H, the method further comprises:
if the number of the array H is zero, recording the result of the measurement as 0, and executing the steps from two to four again;
if the number of the array H is one, taking the result of the measurement as the target height and storing the result into the array R;
if the number of the array H is more than one, further filtering specifically comprises:
judging the number of values in the preset range, which are not centered on LL or LH, of the numerical values in the array H;
if the number is zero, selecting the value of the maximum peak value in the array V corresponding to the array H, if the peak value is larger than a preset threshold value, storing the value of the peak value corresponding to the array H as the target height into the array R, if the peak value does not exceed the preset threshold value, recording the result of the measurement as 0, and executing the steps two to four again;
if the number is one, storing the numerical value which is not centered on LL or LH and is within a preset range as the target height into an array R;
if the number is two, selecting the value of the maximum peak value corresponding to the array H from the values not taking LL or LH as the center and in the preset range as the target height to store in the array R.
5. The ultrasonic height measurement method of claim 4, further comprising, after step six:
judging whether the frequency of recording the measurement result as 0 exceeds a preset frequency or not;
if yes, the array R is judged to be invalid, and the steps from two to five are executed in a circulating mode.
6. The ultrasonic height measurement method of claim 1, wherein step one comprises:
obtaining the first lowest height L1 and the first highest height L2 of the product application range of the measuring instrument;
measuring the weight W of the human body, and calculating the second minimum height according to the weight W and the BMI limit range
Height of second highest
The larger of L1 and L3 is chosen as the lowest height limit LL and the smaller of L2 and L4 is chosen as the highest height limit LH.
7. The ultrasonic height measurement method of claim 1, further comprising, after step seven:
the display screen displays the final height measurement.
8. An ultrasonic height measuring device, comprising:
the height limiting unit is used for setting a lowest height limit LL and a highest height limit LH of the measured height limiting range according to a preset rule;
the ultrasonic detection device comprises an ultrasonic detection device, a sound wave measurement unit and a control unit, wherein the ultrasonic detection device is used for carrying out primary measurement, and the sound wave measurement unit is used for sending data to arrays D (D1, D2, D3 … Dn) and arrays V (V1, V2, V3 … Vn) of the control unit, wherein the arrays D store the target distance detected in the primary measurement of ultrasonic waves, and the arrays V store echo voltage peak values corresponding to all the distances in the arrays D;
the height calculating unit is used for respectively subtracting each numerical value of the array D according to the distance Ds from the bottom plate to the top plate to obtain a height array H (H1, H2 and H3 … Hn);
the numerical value deleting unit is used for deleting numerical values smaller than LL or larger than LH in the array H and deleting corresponding voltage peak values in the array V;
the numerical value screening unit is used for judging the number of elements in the array H, and if the number of the array H is not zero, selecting the value of the maximum numerical value in the array V corresponding to the array H as the target height and storing the value in the array R;
the circular execution unit is used for circularly executing the acoustic wave measurement unit to the numerical value screening unit until the number of the elements of the array R reaches a preset value;
and the sorting selection unit is used for sorting the numerical values in the array R, averaging the numerical values of the preset number in the middle of the sorted array, and obtaining the final height measurement value.
9. An ultrasonic height measuring instrument is characterized by comprising a bottom plate, a supporting column and a top plate, wherein two ends of the supporting column are respectively connected with the bottom plate and the top plate; an ultrasonic detection device is arranged on the top plate and is positioned on one surface, facing the bottom plate, of the top plate; the support column is provided with a function box, a display screen and a control unit are arranged in the function box, and the control unit is respectively connected with the ultrasonic detection device and the display screen; the control unit comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the ultrasonic height measurement method according to any one of claims 1-7 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 ultrasonic height measurement method according to any one of claims 1 to 7.
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| KR20060040566A (en) * | 2005-12-26 | 2006-05-10 | 주식회사 리얼디바이스 | Bmi height and weight scales |
| CN206556745U (en) * | 2017-02-07 | 2017-10-13 | 北京艾听科技有限公司 | A kind of height and weight measurement apparatus |
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