CN111964812A - Magnetic induction pressure measuring device and closed-loop control method - Google Patents
Magnetic induction pressure measuring device and closed-loop control method Download PDFInfo
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- CN111964812A CN111964812A CN202010686458.2A CN202010686458A CN111964812A CN 111964812 A CN111964812 A CN 111964812A CN 202010686458 A CN202010686458 A CN 202010686458A CN 111964812 A CN111964812 A CN 111964812A
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- magnetic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/127—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using inductive means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The embodiment of the invention discloses a magnetic induction pressure measuring device and a closed-loop control method, wherein the device comprises the following components: the pressure measuring device comprises a stress component, a supporting component, a magnetic sensitive element and a control system, wherein the stress component is used for receiving the action of external force, the magnetic sensitive element is used for transmitting the magnetic field intensity generated by the magnetic component to the control system, the control system converts the received magnetic field intensity into the pressure, the real-time measurement of the pressure is realized, and meanwhile, the control system can compare the obtained value of the pressure with a threshold value, so that the working state of the stress component is controlled, and the closed-loop control is realized.
Description
Technical Field
The invention relates to the technical field of pressure measurement and closed-loop control, in particular to a magnetic induction pressure measurement device and a closed-loop control method.
Background
In daily life, people need to artificially apply proper force to the electric appliance when using the electric appliance, and if the electric appliance is subjected to large force due to wrong operation in the operation process, the electric appliance is damaged or people using the electric appliance are injured. For example, in the case of an electric toothbrush which is common and widely used, the electric toothbrush can generate strong grinding force to teeth without applying force to the user, so that the user can achieve a good tooth cleaning effect by applying appropriate force to the electric toothbrush, but the user can have an excessive force applied to the conventional habit formed by using a common toothbrush or the first time when using the electric toothbrush, and thus, the user may hurt some parts in the oral cavity. Therefore, when a user uses the electric appliance, it is very important to avoid the problem that the user himself is injured by the user's improper operation.
Disclosure of Invention
Therefore, it is necessary to provide a magnetic induction pressure measuring device and a closed-loop control method to solve the above problems, and an object of the present invention is to achieve the effect of closed-loop control by measuring the pressure applied to a force-receiving member in real time.
A magnetically-induced pressure measurement device, comprising: the device comprises a stressed component, a supporting component, a magnetic sensing element and a control system;
the vertex of the supporting component is contacted with the fulcrum of the stress component and is used for supporting the stress component;
the magnetic component is positioned at one end of the stressed component;
the magnetic sensing element is arranged opposite to the magnetic component and is used for acquiring the magnetic field intensity generated by the magnetic component when the stressed component is stressed;
the magnetic sensing element is connected with the control system and transmits the magnetic field intensity to the control system;
the control system is used for determining the pressure borne by the stressed component according to the magnetic field intensity.
In one embodiment, the fulcrum is located at a central axis of the force-receiving member.
In one embodiment, the magnetic component is located at the central axis of the force-bearing component and fixed at the end of the upper surface of the force-bearing component.
In one embodiment, when the force-bearing component is stressed, the direction of the force is downward perpendicular to the horizontal plane and acts on the upper surface of the force-bearing component.
In one embodiment, the magnetic sensing element is installed right above the magnetic component, and when the stressed component is not stressed, the magnetic sensing element and the magnetic component have a preset distance.
In one embodiment, the magnetic field strength is a unidirectional magnetic field strength or a three-axis magnetic field strength.
In one embodiment, the magnetic component is a permanent magnet or an electromagnet.
In one embodiment, the magnetic sensing element is a magnetic induction sensor for acquiring the unidirectional magnetic field strength generated by the magnetic component or for acquiring the three-axis magnetic field strength generated by the magnetic component.
A closed-loop control method applied to the magnetically induced pressure measurement device, the method comprising:
the control system receives the magnetic field intensity generated by the magnetic component and acquired by the magnetic sensing element;
and the control system performs closed-loop control on the stressed part according to the magnetic field intensity.
Optionally, the control system performs closed-loop control on the stressed component according to the magnetic field strength, and includes:
the control system determines the corresponding pressure by using the magnetic field intensity;
if the pressure is within the preset value range, the control system determines that the stressed component works normally;
and if the pressure is larger than the preset value range, the control system controls the stressed part to stop working, and gives a prompt.
The embodiment of the invention has the following beneficial effects:
with the magnetic induction pressure measuring device of the present invention, the magnetic induction pressure measuring device includes: the device comprises a stressed component, a supporting component, a magnetic sensing element and a control system; the top point of the supporting component is contacted with the fulcrum of the stress component and is used for supporting the stress component, the magnetic component is positioned at one end of the stress component, the magnetic sensing element is arranged opposite to the magnetic component, and the magnetic sensing element is fixed right above the magnetic part, when the stress part is stressed, the positions of two ends of the stress part on two sides of the fulcrum can be changed, one end of the stress part moves downwards, one end provided with the magnetic part moves upwards, further, the relative position between the magnetic sensing element and the magnetic part can be changed, the magnetic sensing element is used for acquiring the magnetic field intensity generated by the magnetic part at the position of the magnetic sensing element in real time when the stress part is stressed, the magnetic sensing element is connected with the control system and transmits the magnetic field intensity to the control system, and the control system is used for determining the pressure applied to the stress part according to the magnetic field intensity in real time, so that the real-time measurement of the pressure applied to the stress part by the whole magnetic sensing pressure. The magnetic induction pressure measuring device provided by the invention has the beneficial effect of realizing real-time measurement of the pressure borne by the stress component, and can realize a closed-loop control method of the whole system, thereby further realizing the protection of users.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a block diagram of a magnetically induced pressure measurement device in one embodiment;
FIG. 2 is a flow diagram of a closed-loop control method in one embodiment;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a block diagram showing a structure of a magnetically induced pressure measuring apparatus according to an embodiment. Referring to fig. 1, the magnetically induced pressure measuring apparatus includes: the device comprises a stress component 103, a support component 102, a magnetic component 105, a magnetic sensing element 106 and a control system 109, wherein the vertex of the support component 102 is in contact with the fulcrum of the stress component 103 and is used for supporting the stress component 103, the magnetic component 105 is positioned at one end of the stress component 103, the magnetic sensing element 106 and the magnetic component 105 are arranged oppositely and are used for acquiring the magnetic field intensity generated by the magnetic component 105 when the stress component 103 is stressed 101, the magnetic sensing element 106 is connected with the control system 109 and transmits the magnetic field intensity to the control system 109, and the control system 109 is used for determining the pressure 101 borne by the stress component 103 according to the magnetic field intensity.
In the embodiment of the present application, the apex of the support member 102 is in contact with the fulcrum of the force receiving member 103, which is located at the center axis of the force receiving member 103, for supporting the force receiving member 103.
In the embodiment of the present application, the magnetic member 105 is located at the central axis of the force receiving member 103 and fixed to the end of the upper surface of the force receiving member 103.
In the embodiment of the present application, when the force receiving member 103 receives the force 101, the direction of the force 101 is downward perpendicular to the horizontal plane and acts on the upper surface of the force receiving member 103.
In the embodiment of the present application, the magnetic sensing element 106 is installed directly above the magnetic member 105, and when the force receiving member 103 is not receiving the force 101, the magnetic sensing element 106 and the magnetic member 105 have a preset distance 104.
Specifically, when the force receiving member 103 is not subjected to the downward force 101 acting on the upper surface thereof and facing perpendicularly to the horizontal plane, the distance between the magnetic sensing element 106 and the magnetic member 105 is the preset distance 104; when the force receiving component 103 receives a downward force 101 acting on the upper surface of the force receiving component 103 and perpendicular to the horizontal plane, the force receiving component 103 takes a fulcrum between the supporting component 102 and the force receiving component 103 as a center, a force receiving end of the force receiving component 103 moves downward, and a terminal of the other end of the force receiving component 103 moves upward, and since the magnetic component 105 is located on a central axis of the force receiving component 103 and fixed to a terminal of the upper surface of the force receiving component 103, the magnetic component 105 also moves upward along with the movement of the terminal of the force receiving component 103, and the upward movement of the magnetic component 105 causes a preset distance 104 between the magnetic component 105 and the magnetic sensing element 106 to be smaller.
Further, when the force receiving member 103 is not receiving the force 101, a predetermined distance 104 between the magnetic sensing element 106 and the magnetic member 105 is denoted as s1And the magnetic field intensity at the position where the magnetic sensor 106 is located is recorded as H1When the force-receiving member 103 receives a force 101, a predetermined distance 104 between the magnetic sensor 106 and the magnetic member 105 is denoted as s2And the magnetic field intensity at the position where the magnetic sensor 106 is located is recorded as H2Then it can be understood that s2Is less than s1And H2Is greater than H1In (1).
Further, the magnetic sensing element 106 transmits the magnitude of the magnetic field intensity at the position acquired in real time to the control system 109 in a voltage form in real time, and the control system 109 converts the magnitude of the received magnetic field intensity into the magnitude of the pressure 101 applied to the force-receiving component 103, so that the magnetic induction pressure measurement device can realize the function of measuring the magnitude of the pressure 101 applied to the force-receiving component 103 in real time.
In the embodiment of the application, the magnetic field strength is unidirectional magnetic field strength or triaxial magnetic field strength.
In the present embodiment, the magnetic member 105 is a permanent magnet or an electromagnet.
In the embodiment of the present application, the magnetic sensor 106 is a magnetic induction sensor for acquiring the magnetic field strength in a single direction generated by the magnetic component 105 or for acquiring the magnetic field strength in three axes generated by the magnetic component 105.
A closed-loop control method is applied to the magnetic induction pressure measuring device, and comprises the following steps:
In the embodiment of the present application, the magnetic sensing element 106 transmits the collected magnetic field strength generated by the magnetic component 105 to the control system 109 in the form of the voltage 107, after the control system 109 receives the magnetic field strength generated by the magnetic component 105 collected by the magnetic sensing element 106, the control system 109 converts the magnetic field strength into the pressure 101 applied to the force receiving component 103, and the control system 109 determines the next operation of the force receiving component 103 according to the obtained value of the pressure 101 applied to the force receiving component 103.
In one possible implementation, the control system 109 performs closed-loop control on the force-receiving component 103 according to the magnetic field strength, and includes:
the control system 109 determines the corresponding pressure 101 magnitude by using the magnetic field strength;
if the pressure 101 is within the preset value range, the control system 109 determines 108 that the stress component 103 works normally;
if the pressure 101 is larger than the preset value range, the control system 109 controls 108 the force-bearing part 103 to stop working, and the control system 109 gives a prompt.
In this embodiment, the control system 109 determines the next step of the operation of the force receiving member 103 according to the obtained value of the pressure 101 applied to the force receiving member 103, wherein the control system 109 compares the value of the pressure 101 applied to the force receiving member 103 with a preset threshold, and when the value of the pressure 101 obtained by the control system 109 is within the threshold range, the control system 109 determines that the force receiving member 103 is working normally; when the value of the pressure 101 acquired by the control system 109 is larger than the threshold range, the control system 109 sends a corresponding signal to control the stressed component 103 to stop working, and meanwhile, the control system 109 can also give feedback such as vibration and flashing light to a user to realize closed-loop control.
In an embodiment of the present application, a magnetic induction pressure measuring apparatus includes: the device comprises a stressed component, a supporting component, a magnetic sensing element and a control system; the top point of the supporting component is contacted with the fulcrum of the stress component and is used for supporting the stress component, the magnetic component is positioned at one end of the stress component, the magnetic sensing element is arranged opposite to the magnetic component, and the magnetic sensing element is fixed right above the magnetic part, when the stress part is stressed, the positions of two ends of the stress part on two sides of the fulcrum can be changed, one end of the stress part moves downwards, one end provided with the magnetic part moves upwards, further, the relative position between the magnetic sensing element and the magnetic part can be changed, the magnetic sensing element is used for acquiring the magnetic field intensity generated by the magnetic part at the position of the magnetic sensing element in real time when the stress part is stressed, the magnetic sensing element is connected with the control system and transmits the magnetic field intensity to the control system, and the control system is used for determining the pressure applied to the stress part according to the magnetic field intensity in real time, so that the real-time measurement of the pressure applied to the stress part by the whole magnetic sensing pressure. The magnetic induction pressure measuring device can realize the beneficial effect of real-time measurement of the pressure applied to the stress part and can also realize the closed-loop control method of the whole system, the control system in the magnetic induction pressure measuring device can compare and judge the received pressure applied to the stress part with the preset pressure threshold value after acquiring the pressure applied to the stress part, if the pressure is within the pressure threshold value range, the control system determines that the stress part normally works, if the pressure is larger than the pressure threshold value, the control system controls the stress part to stop working, thereby realizing the closed-loop control of the magnetic induction pressure measuring device on the working state of the stress part and further realizing the protection of a user, in addition, in the embodiment of the application, the magnetic field intensity generated by the magnetic part is not limited in the magnetic field intensity and the magnetic field direction, therefore, the embodiment of the application is applicable to various magnetic sensing schemes.
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 present application. 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 magnetically-induced pressure measurement device, comprising: the device comprises a stressed component, a supporting component, a magnetic sensing element and a control system;
the vertex of the supporting component is contacted with the fulcrum of the stress component and is used for supporting the stress component;
the magnetic component is positioned at one end of the stressed component;
the magnetic sensing element is arranged opposite to the magnetic component and is used for acquiring the magnetic field intensity generated by the magnetic component when the stressed component is stressed;
the magnetic sensing element is connected with the control system and transmits the magnetic field intensity to the control system;
the control system is used for determining the pressure borne by the stressed component according to the magnetic field intensity.
2. A magnetically-induced pressure measurement device as claimed in claim 1, wherein the fulcrum is located at a central axis of the force-receiving member.
3. The magnetically-induced pressure measurement device of claim 1, wherein the magnetic member is located at a central axis of the force-receiving member and fixed to a distal end of an upper surface of the force-receiving member.
4. The magnetically-induced pressure measuring device of claim 1, wherein when the force-receiving member is forced, the force is directed downward perpendicular to the horizontal and against the upper surface of the force-receiving member.
5. The magnetically-induced pressure measurement device of claim 1, wherein the magnetic sensing element is mounted directly above the magnetic member, and the magnetic sensing element is at a predetermined distance from the magnetic member when the force-receiving member is not receiving a force.
6. A magnetically induced pressure measurement device as claimed in claim 1 wherein the magnetic field strength is a unidirectional magnetic field strength or a three-axis magnetic field strength.
7. A magnetically-induced pressure measurement device as claimed in claim 1 wherein the magnetic component is a permanent magnet or an electromagnet.
8. The magnetically-induced pressure measurement device of claim 1, wherein the magnetic sensing element is a magnetic induction sensor for acquiring the unidirectional magnetic field strength generated by the magnetic component or for acquiring the tri-axial magnetic field strength generated by the magnetic component.
9. A closed-loop control method applied to the magnetically induced pressure measurement apparatus of any one of claims 1 to 8, the method comprising:
the control system receives the magnetic field intensity generated by the magnetic component and acquired by the magnetic sensing element;
and the control system performs closed-loop control on the stressed part according to the magnetic field intensity.
10. The closed-loop control method of claim 9, wherein the control system performs closed-loop control on the force-receiving component according to the magnetic field strength, comprising:
the control system determines the corresponding pressure by using the magnetic field intensity;
if the pressure is within the preset value range, the control system determines that the stressed component works normally;
and if the pressure is larger than the preset value range, the control system controls the stressed part to stop working, and gives a prompt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010686458.2A CN111964812A (en) | 2020-07-16 | 2020-07-16 | Magnetic induction pressure measuring device and closed-loop control method |
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| CN202010686458.2A CN111964812A (en) | 2020-07-16 | 2020-07-16 | Magnetic induction pressure measuring device and closed-loop control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860223A (en) * | 2021-10-11 | 2021-12-31 | 广东电网有限责任公司东莞供电局 | Lifting device for pole switch controller |
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| CN113860223A (en) * | 2021-10-11 | 2021-12-31 | 广东电网有限责任公司东莞供电局 | Lifting device for pole switch controller |
| CN113860223B (en) * | 2021-10-11 | 2024-02-13 | 广东电网有限责任公司东莞供电局 | Lifting device for pole-mounted switch controller |
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