CN209895619U - Intelligent Young modulus experimental instrument based on capacitive grating sensor - Google Patents
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Abstract
The utility model relates to an intelligent Young modulus experimental instrument based on a capacitive grating sensor, which comprises two parallel and vertically arranged brackets, a fixing device arranged at the top end of the bracket, a metal wire with one end fixed on the fixing device, a capacitive grating sensor and a stabilizing system, wherein the stabilizing system comprises a movable weight tray, a measuring disc arranged at the bottom end of the bracket and a sensor bracket; the other end of the metal wire is fixed on a movable weight tray, and two ends of the movable weight tray are sleeved on the peripheries of the two brackets in a sleeving manner; the capacitive grating sensor is composed of a grating sheet and comprises a fixed grating sheet and a movable grating sheet, wherein the fixed grating sheet and the movable grating sheet are respectively fixed on the movable weight tray and the measuring disc; the sensor support is used for fixing the capacitive grating sensor. The utility model discloses Young modulus experiment appearance test is simple, easy to understand, system stability is strong, and test data is accurate, has important meaning to the teaching experiment.
Description
Technical Field
The utility model belongs to teaching experiment instrument field, concretely relates to intelligent young modulus experiment appearance based on capacitive grating sensor.
Background
Young's modulus is an important index for measuring the elastic deformation resistance of metal materials, is one of the bases for selecting materials of mechanical components, and is a common parameter in engineering technology. At present, the Young's modulus of elasticity of a material is measured in a physical laboratory, taking a metal wire as an example, a tiny elongation is generated under the action of an applied external force, the magnitude of the tiny elongation is about 10-1mm, and a common length measuring tool (a meter ruler, a vernier caliper, a screw micrometer and the like) cannot measure the tiny elongation of the metal wire. Therefore, the traditional method adopts an optical lever mirror ruler method to measure the small change of the length, and has the function of converting the small change of the length into the small change of the angle through an optical lever and converting the small change of the angle into the larger scale reading change through a telescope and a scale. The method can solve the problems to a certain extent, but has the disadvantages. For example, the polished rod amplification principle is complex and is difficult to understand by some students; in addition, an optical lever, a telescope and a scale are involved in the adjusting process of the experiment, and the adjusting steps are complicated. Meanwhile, after the weight is placed, the weight tray and the metal wire vibrate continuously, data are read through the telescope, the data are particularly difficult to read, the data need to be read after the tray is stable, the efficiency is low, and the eye fatigue of students is easily caused.
Therefore, how to improve and design the Young modulus experimental instrument, improve the stability, the operation convenience and the accuracy of the Young modulus experimental instrument, so that teachers and students can generally understand and easily accept the Young modulus experimental instrument, and the method has important significance.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems of difficult operation, complex principle, difficult understanding by beginners, low accuracy, large error and the like of the Young modulus experimental instrument in the prior art, the Young modulus experimental equipment has the advantages of simple principle, high stability, high accuracy, easiness in operation and easiness in understanding.
In order to realize the purpose, the utility model provides a technical scheme is:
the Young modulus experimental instrument intelligent equipment based on the capacitive grating sensor comprises two supports which are arranged in parallel and vertically, a fixing device arranged at the top ends of the supports, and a metal wire with one end fixed on the fixing device, and is characterized by further comprising the capacitive grating sensor and a stabilizing system, wherein the stabilizing system comprises a movable weight tray, a measuring disc arranged at the bottom end of the support and a sensor support; the other end of the metal wire is fixed on a movable weight tray, and two ends of the movable weight tray are sleeved on the peripheries of the two brackets in a sleeving manner; the capacitive grating sensor is composed of a grating sheet and comprises a fixed grating sheet and a movable grating sheet, wherein the fixed grating sheet and the movable grating sheet are respectively fixed on the movable weight tray and the measuring disc; the sensor support is used for fixing the capacitive grating sensor.
Preferably, a circular flange linear motion bearing is arranged between each end of the movable weight tray and the support, and the inner diameter of the circular flange linear motion bearing is equal to or slightly larger than the outer diameter of the support, so that the movable weight tray can move relative to the support and along the length direction of the support.
Preferably, the other end of the metal wire passes through a small hole arranged on the movable weight tray and is fixed on the movable weight tray through a fixed clamp; and a weight fixing device is arranged on the movable weight tray.
Further, the sensor bracket comprises a fixed bracket and an adjustable bracket; the fixed support is arranged on the side wall or the bottom end of the movable weight tray and used for fixing the movable grid sheet or the fixed grid sheet; the adjustable support is arranged on the measuring disc and used for fixing the fixed grid piece or the movable grid piece, and the adjustable support enables the grid piece to relatively slide along the measuring disc and be fixed at a certain position.
Specifically, the adjustable support comprises a grid carrier, a supporting device, a chassis and a sliding rail mechanism, wherein the grid carrier is directly or indirectly fixed on the supporting device, and the supporting device is fixed on the chassis; the sliding rail mechanism is arranged on the chassis, so that the supporting device slides relative to the chassis; or the slide rail mechanism is arranged between the grid carrier and the supporting device, so that the grid carrier slides relative to the supporting device.
Preferably, the slide rail mechanism further comprises a second slide rail mechanism, and the length direction of the second slide rail mechanism is the same as the length direction of the supporting device, and the second slide rail mechanism is used for directly or indirectly adjusting the distance between the supporting device and the chassis.
The sliding rail mechanism is matched with the sliding rail mechanism and used for fixing a part which slides relatively to the sliding rail mechanism at a certain position; the length direction of the slide rail mechanism track is perpendicular to the plane where the two supports are located.
Preferably, the fixed grid plate is fixed on the fixed support, and the movable grid plate is fixed on the adjustable support.
Preferably, the measuring disc is provided with a singlechip, a power supply and a Bluetooth emitter; the power supply is respectively connected with the singlechip and the Bluetooth emitter and used for supplying power; the capacitance grid sensor is connected with the single chip microcomputer, the capacitance value of the capacitance grid sensor changes and is transmitted to the single chip microcomputer through an electric signal, and the single chip microcomputer transmits the capacitance value to the Bluetooth emitter through signal processing.
Specifically, its characterized in that, the singlechip is STM32 singlechip, STM32 singlechip and bluetooth transmitter set up in the measuring disk surface, power supply sets up in the measuring disk bottom.
More preferably, the Bluetooth system further comprises a Bluetooth receiver matched with the Bluetooth transmitter, and a carrier of the Bluetooth receiver is a smart phone or a computer.
The utility model has the advantages that:
(1) the utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor combines circuit control and intelligent sensing measurement system and intelligent data transmission system, forms novel young modulus intellectual detection system's system architecture for the test is simple, easy understanding, system stability is strong, and test data is accurate. The capacitive grating sensor is used for measuring the elongation of the metal wire, so that the method is simple and easy to understand; by arranging the stabilizing system, the weight tray, the measuring system and the like are stabilized in the process of loading the weight; through setting up the sensor support for the sensor easily combines with the system, and adjusts the convenience.
(2) The utility model discloses an intelligent Young modulus experiment appearance based on grid sensor, its stable system, through looping the ring in the support in weight tray both ends, make when adding the weight, the weight tray can not cause vibrations or unstability because of the addition of weight; further through setting up circular flange linear motion bearing for the weight tray with in the area of contact increase between the support, stability is stronger, and the frictional force between it and the support is very little, to can neglecting.
(3) The utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor, its stable system is used for fixed capacitive grating sensor's fixed grid piece and movable grid piece through setting up the sensor support to inject the position relation of sensor support, be fixed in movable weight tray with the fixed bolster on, set up adjustable support on the measuring disc. Because movable weight tray and measuring disc correspond to each other to make the relative position of fixed bolster and adjustable support be on a parallel with the position of wire, move bars piece and fixed bars piece and be on a parallel with the wire length direction, make when surveing young modulus experiment, move the relative area change between bars piece and the fixed bars piece and measure more accurately, the error is littleer.
(4) The utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor, its stable system, adjustable support can be used for adjusting the relative distance between grid piece and the fixed grid piece biplane through setting up slide rail mechanism, and the test of being convenient for is adjusted, and should adjust support simple structure, adjust the convenience, does not need too much parts.
(5) The utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor still includes fixed stop device, with slide rail mechanism phase-match for the bars piece is adjusted conveniently, and can be fixed in a certain position, and stability is strong.
(6) The utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor, the other end of wire passes the aperture on the movable weight tray to it is fixed through the fixation clamp, the adjustment of being convenient for sets up the wire.
(7) The utility model discloses an intelligent young modulus experiment appearance based on capacitive grating sensor through set up singlechip and bluetooth transmitter on the measuring pan, will test data transmission to customer's terminal, for example on cell-phone or the computer, is convenient for look up and read experimental data.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic structural diagram of a capacitive sensor according to the present invention;
fig. 2 is a schematic view of a three-dimensional structure based on a capacitive sensor of the present invention;
FIG. 3 is a schematic view of the structure of the measuring disc of the present invention;
fig. 4 is a schematic structural diagram of a movable weight tray.
The labels in the figure are: 1-a scaffold; 2-measuring disc; 3-a metal wire; 4-a movable weight tray; 5-a fixed grid sheet; 6-moving grid sheet; 7-circular flange linear motion shaft; 8-fixing a bracket; 9-an adjustable support; 10-a fixture; 41-weight fixing device; 91-a grid support; 92-a support means; 93-a chassis; 94-slide rail mechanism.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example 1
As shown in fig. 1-4, an intelligent young's modulus tester based on a capacitive grating sensor comprises two parallel and vertical supports 1, a fixing device 10 arranged at the top end of the support 1, and a metal wire 3 with one end fixed on the fixing device 10, and is characterized by further comprising a capacitive grating sensor and a stabilizing system, wherein the stabilizing system comprises a movable weight tray 4, a measuring disc 2 arranged at the bottom end of the support 1, and a sensor support; the other end of the metal wire 3 is fixed on a movable weight tray 4, and two ends of the movable weight tray 4 are sleeved on the peripheries of the two brackets 1; the capacitive grating sensor is composed of grating pieces and comprises a fixed grating piece 5 and a movable grating piece 6, wherein the fixed grating piece 5 and the movable grating piece 6 are respectively fixed on the movable weight tray 4 and the measuring disc 2; the sensor support is used for fixing the capacitive grating sensor.
The core technical content of the utility model, the test is simple, easy understanding, system stability is strong, and test data is accurate. The capacitive grating sensor is used for measuring the elongation of the metal wire, and is simple, accurate and easy to understand; by arranging the stabilizing system, the weight tray, the measuring system and the like are stabilized in the process of loading the weight; through setting up the sensor support for the sensor easily combines with the system, and adjusts the convenience.
Preferably, the two ends of the movable weight tray 4 are sleeved on the peripheries of the two supports 1, a circular flange linear motion bearing 7 is arranged between the two ends of the movable weight tray 4 and the supports 1, and the inner diameter of the circular flange linear motion bearing 7 is equal to or slightly larger than the outer diameter of the support 1, so that the movable weight tray 4 can move relative to the supports 1 and along the length direction of the supports 1. Through setting up circular flange rectilinear movement bearing 7 for the weight tray with in the area of contact between support 1 increase, stability is stronger, and frictional force between it and the support 1 is very little, to can neglecting, in this embodiment, support 1 is the sharp optical axis, and its frictional force is littleer.
Specifically, the other end of the metal wire 3 passes through a small hole arranged on the movable weight tray 4 and is fixed on the movable weight tray 4 through a fixing clamp; the movable weight tray 4 is provided with a weight fixing device 41. Fixed through the fixation clamp between wire 3 and the movable weight tray 4 for it is fixed firm between wire 3 and the movable weight tray 4, and convenient, the easy operation when needing to change wire 3. Through setting up weight fixing device 41 for when adding the weight again, the weight is more stable, and is less to the stability influence of system.
Preferably, the sensor bracket comprises a fixed bracket 8 and an adjustable bracket 9; the fixed support 8 is arranged on the side wall or the bottom end of the movable weight tray 4 and used for fixing the movable grid sheet 6 or the fixed grid sheet 5; the adjustable support 9 is arranged on the measuring disc 2 and used for fixing the fixed grid piece 5 or the movable grid piece 6, and the adjustable support 9 enables the grid pieces to relatively slide along the measuring disc 2 and be fixed at a certain position. The two supports are respectively used for fixing the two grid pieces, one of the supports is an adjustable support 9, so that the adjustment of the relative distance between the two grid piece surfaces and the correction of the position relation are facilitated; the two supports are arranged in parallel and are parallel to the length direction of the metal wire, so that the movable grid piece 6 and the fixed grid piece 5 are parallel to each other and are parallel to the length direction of the metal wire, the movable grid piece 6 and the fixed grid piece 5 are more accurate in the relative area change measuring process, and the error is smaller.
Specifically, in this embodiment, the adjustable bracket 9 includes a grid carrier 91, a supporting device 92, a chassis 93 and a sliding rail mechanism 94, the grid carrier 91 is directly or indirectly fixed on the supporting device 92, and the supporting device 92 is fixed on the chassis 93; in this embodiment, the slide mechanism 94 is disposed between the grid carrier 91 and the support device 92, so that the grid carrier 91 slides relative to the support device. Through specific structural design, the distance between the surfaces of the grid pieces can be adjusted in a relatively movable mode. As a variant, the slide mechanism 94 is arranged on the chassis such that the support means 92 slides relative to the chassis.
Further, the device also comprises a fixed limiting device, wherein the fixed limiting device is matched with the sliding rail mechanism 94 and is used for fixing the relatively sliding component at a certain position; the length direction of the track of the slide rail mechanism 94 is perpendicular to the plane of the two brackets 1. In this embodiment, the fixed limiting device is fixedly connected with the nut through a stud.
In this embodiment, the fixed grid 5 is fixed on the fixed support 8, and the movable grid 6 is fixed on the adjustable support 9. As a variant, the fixed grid 5 may also be fixed to the adjustable support 9, and the movable grid 6 may be fixed to the fixed support 8.
Preferably, the measuring disc 2 is provided with a singlechip, a power supply and a Bluetooth emitter; the power supply is respectively connected with the singlechip and the Bluetooth emitter and used for supplying power; the capacitance grid sensor is connected with the single chip microcomputer, the capacitance value of the capacitance grid sensor changes and is transmitted to the single chip microcomputer through an electric signal, and the single chip microcomputer transmits the capacitance value to the Bluetooth emitter through signal processing. The utility model discloses a young modulus intellectual detection system combines together with intelligent data transmission system for the experiment test data reads more intelligently.
Preferably, the Bluetooth system further comprises a Bluetooth receiver matched with the Bluetooth transmitter, and a carrier of the Bluetooth receiver is a smart phone or a computer.
Specifically, the singlechip is the STM32 singlechip, STM32 singlechip and bluetooth transmitter set up in the measuring disk surface, power supply sets up in the measuring disk bottom.
The experimental principle is as follows: a wire of uniform thickness, length L, cross-sectional area S. The upper end of the weight is fixed, and a weight with mass m is hung at the lower end of the weight. Then, the wire is elongated by Δ L by the external force F ═ mg. The force F/S applied per unit cross-sectional area is referred to as stress, and the elongation Δ L/L per unit length is referred to as strain. Thus, according to hooke's law: within the elastic limits, the stress F/S of the object is proportional to the strain Δ L/L produced, i.e.:
the proportional constant Y is the elastic modulus of the material, abbreviated as young's modulus, which is numerically equal to the stress that produces unit strain. It has the unit of N/m2Or Pa. From the above formula, one can obtain:
according to the above formula, the Young's modulus can be determined by measuring the respective amounts at the right end of the equal sign. The external force applied to the wire and the original length L and the sectional area S of the wire can be measured by a general method. Only the elongation Δ L is a small variable, which is generally difficult to measureA length of about 1m, a diameter of 0.500mm, and a Young's modulus of elasticity of 2.2X 10 when a 1kg weight is suspended-4pa, the estimated Δ L is about 0.22 mm. Therefore, Δ L measurement in the prior art is difficult. The capacitive grating sensor of the present invention uses a capacitor as a sensitive element, and the capacitive grating sensor structurally comprises a movable grating sheet 6 and a fixed grating sheet 5. The movable grid 6 comprises an emitter and a receiver, and the fixed grid 5 comprises a reflector. The reflector forms plate capacitors with the emitter and the receiver respectively. The capacitive grating sensor converts mechanical displacement into capacitance change, and displacement can be measured, so that the measurement is convenient. Meanwhile, by setting a stable system, the problems that the weight tray shakes due to the weight loading in the traditional and prior art, so that the test is inaccurate and the test needs long time are solved. The utility model discloses a set up adjustable bracket for adjust the setting of relative distance between two bars pieces, have important meaning.
Example 2
As shown in fig. 1-4, an intelligent young's modulus tester based on a capacitive grating sensor comprises two parallel and vertical supports 1, a fixing device 10 arranged at the top end of the support 1, and a metal wire 3 with one end fixed on the fixing device 10, and is characterized by further comprising a capacitive grating sensor and a stabilizing system, wherein the stabilizing system comprises a movable weight tray 4, a measuring disc 2 arranged at the bottom end of the support 1, and a sensor support; the other end of the metal wire 3 is fixed on a movable weight tray 4, and two ends of the movable weight tray 4 are sleeved on the peripheries of the two brackets 1; the capacitive grating sensor is composed of grating pieces and comprises a fixed grating piece 5 and a movable grating piece 6, wherein the fixed grating piece 5 and the movable grating piece 6 are respectively fixed on the movable weight tray 4 and the measuring disc 2; the sensor support is used for fixing the capacitive grating sensor.
The core technical content of the utility model, the test is simple, easy understanding, system stability is strong, and test data is accurate. The capacitive grating sensor is used for measuring the elongation of the metal wire, so that the method is simple and easy to understand; by arranging the stabilizing system, the weight tray, the measuring system and the like are stabilized in the process of loading the weight; through setting up the sensor support for the sensor easily combines with the system, and adjusts the convenience.
Preferably, the two ends of the movable weight tray 4 are sleeved on the peripheries of the two supports 1, a circular flange linear motion bearing 7 is arranged between the two ends of the movable weight tray 4 and the supports 1, and the inner diameter of the circular flange linear motion bearing 7 is equal to or slightly larger than the outer diameter of the support 1, so that the movable weight tray 4 can move relative to the supports 1 and along the length direction of the supports 1. Through setting up circular flange rectilinear movement bearing 7 for the weight tray with in the area of contact between support 1 increase, stability is stronger, and frictional force between it and the support 1 is very little, to can neglecting, in this embodiment, support 1 is the sharp optical axis, and its frictional force is littleer.
Preferably, the sensor bracket comprises a fixed bracket 8 and an adjustable bracket 9; the fixed support 8 is arranged on the side wall or the bottom end of the movable weight tray 4 and used for fixing the movable grid sheet 6 or the fixed grid sheet 5; the adjustable support 9 is arranged on the measuring disc 2 and used for fixing the fixed grid piece 5 or the movable grid piece 6, and the adjustable support 9 enables the grid pieces to relatively slide along the measuring disc 2 and be fixed at a certain position. The two supports are respectively used for fixing the two grid pieces, one of the two supports is an adjustable support, so that the relative distance between the two grid piece surfaces and the position relation can be conveniently adjusted to correct.
Specifically, the adjustable support 9 includes a grid carrier 91, a support device 92, a chassis 93 and a sliding rail mechanism 94, the grid carrier 91 is directly or indirectly fixed on the support device 92, and the support device 92 is fixed on the chassis 93; the slide mechanism 94 is disposed between the grid carrier 91 and the support 92 such that the grid carrier 91 slides relative to the support. Through specific structural design, the distance between the surfaces of the grid pieces can be adjusted in a relatively movable mode.
Further, the device also comprises a fixed limiting device, wherein the fixed limiting device is matched with the sliding rail mechanism 94 and is used for fixing the relatively sliding component at a certain position; the length direction of the track of the slide rail mechanism 94 is perpendicular to the plane of the two brackets 1.
In this embodiment, the fixed grid 5 is fixed on the fixed support 8, and the movable grid 6 is fixed on the adjustable support 9. As a variant, the fixed grid 5 may also be fixed to the adjustable support 9, and the movable grid 6 may be fixed to the fixed support 8.
Preferably, the measuring disc 2 is provided with a singlechip, a power supply and a Bluetooth emitter; the power supply is respectively connected with the singlechip and the Bluetooth emitter and used for supplying power; the capacitance grid sensor is connected with the single chip microcomputer, the capacitance value of the capacitance grid sensor changes and is transmitted to the single chip microcomputer through an electric signal, and the single chip microcomputer transmits the capacitance value to the Bluetooth emitter through signal processing. The utility model discloses a young modulus intellectual detection system combines together with intelligent data transmission system for the experiment test data reads more intelligently.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An intelligent Young modulus experimental instrument based on a capacitive grating sensor comprises two parallel and vertical supports (1), a fixing device (10) arranged at the top end of each support (1), and a metal wire (3) with one end fixed on the fixing device (10), and is characterized by further comprising the capacitive grating sensor and a stabilizing system, wherein the stabilizing system comprises a movable weight tray (4), a measuring disc (2) arranged at the bottom end of each support (1) and a sensor support; the other end of the metal wire (3) is fixed on a movable weight tray (4), and two ends of the movable weight tray (4) are sleeved on the peripheries of the two brackets (1) in a sleeved mode; the capacitive grating sensor is composed of grating pieces and comprises a fixed grating piece (5) and a movable grating piece (6), wherein the fixed grating piece (5) and the movable grating piece (6) are respectively fixed on the movable weight tray (4) and the measuring disc (2); the sensor support is used for fixing the capacitive grating sensor.
2. The capacitive sensor-based intelligent Young modulus tester as claimed in claim 1, wherein a circular flange linear motion bearing (7) is arranged between the two ends of the movable weight tray (4) and the support (1), and the inner diameter of the circular flange linear motion bearing (7) is equal to or slightly larger than the outer diameter of the support (1), so that the movable weight tray (4) can move relative to the support (1) and along the length direction of the support (1).
3. The capacitive sensor-based intelligent Young modulus tester as claimed in claim 2, wherein the other end of the metal wire (3) passes through a small hole arranged on the movable weight tray (4) and is fixed on the movable weight tray (4) through a fixing clamp; and a weight fixing device (41) is arranged on the movable weight tray (4).
4. The intelligent Young's modulus tester based on capacitive grating sensor as claimed in claim 2, wherein the sensor support comprises a fixed support (8) and an adjustable support (9); the fixed support (8) is arranged on the side wall or the bottom end of the movable weight tray (4) and used for fixing the movable grid sheet (6) or the fixed grid sheet (5); the adjustable support (9) is arranged on the measuring disc (2) and used for fixing the fixed grid piece (5) or the movable grid piece (6), and the adjustable support (9) enables the grid piece to relatively slide along the measuring disc (2) and be fixed at a certain position.
5. The capacitive sensor-based intelligent Young's modulus tester as claimed in claim 4, wherein the adjustable bracket (9) is arranged on the measuring disk, the adjustable bracket (9) comprises a grid carrier (91), a supporting device (92), a chassis (93) and a sliding rail mechanism (94), the grid carrier (91) is directly or indirectly fixed on the supporting device (92), and the supporting device (92) is fixed on the chassis (93); the sliding rail mechanism (94) is arranged on the chassis, so that the supporting device (92) slides relative to the chassis; or the slide rail mechanism (94) is arranged between the grid carrier (91) and the supporting device (92) so that the grid carrier (91) slides relative to the supporting device.
6. The capacitive sensor-based intelligent Young's modulus tester as claimed in claim 5, further comprising a fixing and limiting device, wherein the fixing and limiting device is matched with the sliding rail mechanism (94) and is used for fixing the relatively sliding component at a certain position; the length direction of the track of the slide rail mechanism (94) is vertical to the plane of the two brackets (1).
7. The capacitive sensor-based intelligent Young's modulus tester as claimed in claim 5, wherein the fixed grid sheet (5) is fixed on a fixed bracket (8), and the movable grid sheet (6) is fixed on an adjustable bracket (9).
8. The intelligent Young's modulus tester based on the capacitive sensor according to any one of claims 1-7, wherein a singlechip, a power supply and a Bluetooth emitter are arranged on the measuring disc (2); the power supply is respectively connected with the singlechip and the Bluetooth emitter and used for supplying power; the capacitance grid sensor is connected with the single chip microcomputer, the capacitance value of the capacitance grid sensor changes and is transmitted to the single chip microcomputer through an electric signal, and the single chip microcomputer transmits the capacitance value to the Bluetooth emitter through signal processing.
9. The intelligent Young's modulus experiment instrument based on the capacitive grating sensor as claimed in claim 8, wherein the single chip microcomputer is an STM32 single chip microcomputer, the STM32 single chip microcomputer and the Bluetooth emitter are arranged on the surface of the measuring disc, and the power supply is arranged at the bottom of the measuring disc.
10. The intelligent Young's modulus tester based on the capacitive sensor as claimed in claim 8, further comprising a Bluetooth receiver matched with the Bluetooth transmitter, wherein the carrier of the Bluetooth receiver is a smart phone or a computer.
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| CN201821839081.4U CN209895619U (en) | 2018-11-09 | 2018-11-09 | Intelligent Young modulus experimental instrument based on capacitive grating sensor |
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| CN201821839081.4U CN209895619U (en) | 2018-11-09 | 2018-11-09 | Intelligent Young modulus experimental instrument based on capacitive grating sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326186A (en) * | 2018-11-09 | 2019-02-12 | 同济大学浙江学院 | A kind of intelligent Young's modules instrument based on capacitor grid transducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109326186A (en) * | 2018-11-09 | 2019-02-12 | 同济大学浙江学院 | A kind of intelligent Young's modules instrument based on capacitor grid transducer |
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