CN110553625B - Inclination angle sensor and detection method thereof - Google Patents
Inclination angle sensor and detection method thereof Download PDFInfo
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- CN110553625B CN110553625B CN201910702489.XA CN201910702489A CN110553625B CN 110553625 B CN110553625 B CN 110553625B CN 201910702489 A CN201910702489 A CN 201910702489A CN 110553625 B CN110553625 B CN 110553625B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
Abstract
The invention provides a tilt sensor and a detection method thereof, which are provided with analog quantity signal output, digital quantity signal output and switching value signal output, so that when the sensor is replaced, the sensor can be calibrated without being externally connected with other equipment such as a computer, and the tilt sensor is convenient to use and good in maintainability.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a tilt angle sensor and a detection method thereof.
Background
Tilt sensors, also known as inclinometers, gradienters, inclinometers, are often used for the measurement of horizontal angular changes of systems, gradienters ranging from simple bubble gradienters of the past to electronic gradienters of today as a result of the development of automation and electronic measurement techniques.
With the continuous development of production and science, angle measurement is more and more widely applied to various fields such as industrial scientific research and the like, and with the continuous improvement of technical level and measurement accuracy. The demand of the market for sensors is also increasing, and for example, tilt sensors are not many, but they are not produced autonomously in China, and are used to measure the tilt variation relative to the horizontal plane by definition, in other words, they are actually acceleration sensors using the principle of inertia. The sensor can be divided into three tilt sensors of a solid pendulum type, a liquid pendulum type and a gas pendulum type in the aspect of a single working principle.
The classification of inclination sensor installation axle number can be divided into two kinds of unipolar and biax from inclination sensor's classification, what angle can be measured respectively to unipolar and biax, unipolar inclination sensor can only survey the angle change that produces around an axle, the biax can survey relative and two axle angle changes, inclination sensor that we said can horizontal installation and perpendicular installation, the mode according to the installation is different, unipolar and biax inclination sensor measuring angle also is different, the biax can measure upset and angle of pitch, and the unipolar can only survey flip angle or angle of pitch when selecting horizontal installation, if the unipolar can only survey flip angle when selecting perpendicular installation, the angle of pitch is not optional, unipolar inclination sensor is many in the existing market, and resolution ratio is higher.
From the tilt sensor output mode classification, can divide into: analog quantity output and digital quantity output. The analog quantity signal output type is to output different analog quantity signals according to the change of the inclination angle. The digital quantity output type is to convert the value of the inclination angle into digital quantity and output a digital quantity signal through a communication port, and the common communication port types include CAN Open, a serial port RS232, RS485 and the like. In a specific application, the angle value must correspond to a specific detection quantity regardless of the analog quantity output type or the digital quantity output type. Such as: the flatness of the surface is detected, firstly, the sensor needs to be installed on a specific plane, and certain errors exist between the physical zero position of an object and the zero position of the sensor, so that the calibration needs to be carried out again in the practical application process. Therefore, certain difficulty is caused to practical application, and particularly when the sensor is in failure and needs to be replaced by a new sensor, the calibration needs to be carried out again, so that great inconvenience is brought to use.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a tilt sensor that is convenient and fast to calibrate.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the inclination angle sensor and the detection method thereof are convenient to use and good in maintainability.
The solution of the invention is realized by the following steps: the inclination angle sensor comprises a detection module and an output module, wherein the detection module is used for detecting an inclination angle signal of a detected body, and the output module outputs a digital quantity inclination angle signal, an analog quantity inclination angle signal and a switching value signal according to the inclination angle signal detected by the detection module.
On the basis, the other technical scheme of the invention also comprises a calibration module which is used for calibrating the angle threshold set by the switching value signal in advance.
In addition to the above, another technical solution of the present invention is that the switching value signal has two or more angle thresholds.
On the basis, the calibration module is a key, a switch, a knob or a sliding block which is arranged on the tilt angle sensor.
On the basis, the calibration module comprises an inclination sensor knocked signal acquisition module and a knocking signal processing module, wherein the inclination sensor knocked signal acquisition module is used for acquiring a knocking signal of the inclination sensor, and the knocking signal processing module is used for calibrating an angle threshold set by the switching value signal according to the acquired knocking signal of the inclination sensor.
Another technical solution of the present invention is to provide a tilt sensor detecting method based on the above, including the following steps:
detecting, namely detecting a tilt angle signal of the detected body;
and outputting the inclination angle signal as a digital inclination angle signal, an analog inclination angle signal and a switching value signal.
Another technical solution of the present invention is to further include, on the basis of the above, the steps of:
and calibrating, namely calibrating the angle threshold set by the switching value signal in advance.
In addition to the above, another technical solution of the present invention is that the switching value signal has two or more angle thresholds.
On the basis, the other technical scheme of the invention is that the calibration steps are as follows:
when the inclination Angle signal of the measured body is H Min, the calibration sensor records the Angle value corresponding to the current calibration position as Angle Min;
when Angle > = Angle min, out0 outputs an active state;
when the inclination Angle signal of the measuring body is H1, the calibration sensor records that the Angle value corresponding to the current calibration position is Angle1;
when Angle > = Angle1, out1 outputs an active state.
When the inclination Angle signal of the measuring body is H Max, the calibration sensor records that the Angle value corresponding to the current calibration position is Angle Max;
when Angle > = Angle max, outn outputs an active state.
On the basis, the other technical scheme of the invention is that the calibration step specifically comprises the following steps:
within a preset time after the inclination angle sensor is electrified, acquiring whether the inclination angle sensor has a knocked signal;
if yes, judging whether the knocked signal of the tilt angle sensor is within a preset frequency and frequency range;
if so, calibrating the angle threshold set by the switching value signal according to the frequency and the frequency of the knocked signal;
otherwise, the calibration is not performed.
According to the technical scheme, the technical scheme provided by the invention has the following advantages:
the invention provides a tilt sensor which is provided with analog quantity signal output, digital quantity signal output and switching value signal output, so that when the sensor is replaced, the sensor can be calibrated without being externally connected with other equipment such as a computer, and the tilt sensor is convenient to use and good in maintainability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram illustrating a calibration of a tilt sensor according to an embodiment of the present invention;
fig. 2 is a flowchart of a calibration method of a tilt sensor according to an embodiment of the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings, and the description in this section is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto. The description is to be regarded as illustrative and explanatory only and should not be taken as limiting the scope of the invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
In the following embodiments of the present invention, as shown in fig. 1, a tilt sensor includes a detection module and an output module, where the detection module is configured to detect a tilt signal of a measured object, and the output module outputs a digital tilt signal, an analog tilt signal, and a switching value signal according to the tilt signal detected by the detection module. The tilt angle sensor is provided with analog quantity signal output and digital quantity signal output, and is also provided with switching value signal output, so that when the sensor is replaced, calibration can be carried out through the sensor, external computers and other equipment are not needed, and the tilt angle sensor is convenient to use and good in maintainability. The inclination signal of the detected body is detected, and the digital quantity inclination signal, the analog quantity inclination signal and the like are output by adopting the prior art, and are not described again.
On the basis, the other embodiment of the invention further comprises a calibration module, which is used for calibrating the angle threshold set by the switching value signal in advance.
Another embodiment of the present invention is that, on the basis of the above, the switching value signal sets two or more angle thresholds.
Another embodiment of the present invention is that on the basis of the above, the calibration module is a key, a switch, a knob or a slider disposed on the tilt sensor.
On the basis, another embodiment of the present invention is that the calibration module includes a knocked signal acquisition module of the tilt sensor and a knocking signal processing module, the knocked signal acquisition module of the tilt sensor is used for acquiring a knocked signal of the tilt sensor, and the knocking signal processing module is used for calibrating the angle threshold set by the switching value signal according to the acquired knocked signal of the tilt sensor.
In addition, a tapping signal acquisition area can be arranged at a specific part or a specific surface of the sensor, the number of the tapping signal acquisition areas can be two or more, and when the specific part or the specific surface is determined, the specific angle threshold for calibrating the switching value signal is determined.
As shown in fig. 2, another embodiment of the present invention provides, on the basis of the foregoing, a tilt sensor detecting method, including the following steps:
detecting, namely detecting a tilt angle signal of the detected body;
and outputting the inclination angle signal as a digital inclination angle signal, an analog inclination angle signal and a switching value signal.
Another embodiment of the present invention is based on the above, further comprising the steps of:
and calibrating, namely calibrating the angle threshold set by the switching value signal in advance.
Another embodiment of the present invention is that, on the basis of the above, the switching value signal sets two or more angle thresholds.
Another embodiment of the present invention is based on the above, wherein the calibrating step specifically comprises:
when the inclination Angle signal of the measuring body is H Min, the calibration sensor records the Angle value corresponding to the current calibration position as Angle Min;
out0 outputs an active state when Angle > = Angle min;
when the inclination Angle signal of the measuring body is H1, the calibration sensor records that the Angle value corresponding to the current calibration position is Angle1;
when Angle > = Angle1, out1 outputs an active state.
When the inclination Angle signal of the measuring body is H Max, the calibration sensor records that the Angle value corresponding to the current calibration position is Angle Max;
when Angle > = Angle max, outn outputs an active state.
Another embodiment of the present invention is based on the above, wherein the calibrating step specifically includes:
within a preset time (for example, within 30 seconds) after the inclination angle sensor is powered on, acquiring whether the inclination angle sensor has a knocked signal;
if yes, judging whether the knocked signal of the tilt angle sensor is within the preset frequency and frequency range;
if so, calibrating the angle threshold set by the switching value signal according to the frequency and the frequency of the knocked signal;
otherwise, the calibration is not performed.
As shown in fig. 2, it may be determined whether or not a tap is made on a specific area, a specific portion, or a specific surface of the sensor, wherein the number of the specific area, the specific portion, or the specific surface may be two or more, and when the specific area, the specific portion, or the specific surface is tapped, the calibration may be performed based on the tapped area, the tapped portion, or an angle threshold set for the switching value signal. Of course, the frequency and number of taps, and the specific area or specific portion or specific surface of the tap may be cross-coupled, and this is within the scope of the present invention.
According to the technical scheme, the technical scheme provided by the invention has the following advantages:
the invention provides a tilt sensor which is provided with analog quantity signal output, digital quantity signal output and switching value signal output, so that when the sensor is replaced, the sensor can be calibrated without being externally connected with other equipment such as a computer, and the tilt sensor is convenient to use and good in maintainability.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A tilt sensor comprises a detection module and an output module, wherein the detection module is used for detecting a tilt signal of a detected body, and the output module is used for outputting a digital tilt signal, an analog tilt signal and a switching value signal according to the tilt signal detected by the detection module;
the tilt sensor also comprises a calibration module which is used for calibrating the angle threshold set by the switching value signal in advance, the calibration module comprises a tilt sensor knocked signal acquisition module and a knocking signal processing module, the tilt sensor knocked signal acquisition module is used for acquiring a knocking signal of the tilt sensor, and the knocking signal processing module is used for calibrating the angle threshold set by the switching value signal according to the acquired frequency and the times of knocking signals of the tilt sensor; if the frequency and the frequency of the knocked signal of the tilt sensor are within a preset range, calibrating an angle threshold value set by the switching value signal according to the frequency and the frequency of the knocked signal of the tilt sensor; otherwise, not carrying out calibration;
the method comprises the steps that a specific part or a specific surface of a sensor can be provided with two or more knocking signal acquisition areas, and when the specific part or the specific surface is knocked, a specific angle threshold value of a switching value signal is judged and calibrated; meanwhile, the signal frequency and the frequency of the knocking are in cross combination with the specific part or the specific surface of the knocking.
2. The tilt sensor according to claim 1, wherein the switching value signal sets two or more angle thresholds.
3. A tilt sensor detection method is characterized by comprising the following steps:
detecting, namely detecting a tilt angle signal of the detected body;
outputting the inclination angle signal as a digital quantity inclination angle signal, an analog quantity inclination angle signal and a switching value signal;
calibrating, namely calibrating an angle threshold set by the switching value signal in advance;
the calibration step specifically comprises:
within a preset time after the inclination angle sensor is electrified, acquiring whether the inclination angle sensor has a knocked signal or not;
if yes, judging whether the knocked signal of the tilt angle sensor is within the preset frequency and frequency range;
if so, calibrating the angle threshold set by the switching value signal according to the frequency and the times of the knocked signal;
otherwise, not carrying out calibration;
the method comprises the steps that a specific part or a specific surface of a sensor can be provided with two or more knocking signal acquisition areas, and when the specific part or the specific surface is knocked, a specific angle threshold value of a switching value signal is judged and calibrated; meanwhile, the signal frequency and the frequency of the knocking are in cross combination with the specific part or the specific surface of the knocking.
4. The tilt sensor detecting method according to claim 3, wherein the switching value signal sets two or more angle thresholds.
5. The tilt sensor detection method according to claim 3, wherein the calibration step specifically comprises:
when the inclination angle signal of the measured object is H Min, the calibration sensor records the angle value corresponding to the current calibration position as Anglemin;
when Angle > = Angle min, out0 outputs an active state;
when the inclination Angle signal of the measuring body is H1, the calibration sensor records that the Angle value corresponding to the current calibration position is Angle1;
when Angle > = Angle1, out1 outputs an active state;
when the inclination angle signal of the measured body is H Max, the calibration sensor records the angle value corresponding to the current calibration position as Anglemax;
when Angle > = Angle max, outn outputs the active state.
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| 基于MMA8452Q传感器的计步器抗干扰设计;李萍等;《电子设计工程》;20140430;第22卷(第7期);正文第162-163页 * |
| 嵌入式网络化智能传感器的设计;林雪;《信息科技辑》;20100815;正文第1和38页 * |
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