CN110953233A - Stud structure capable of accurately measuring pressure in real time - Google Patents
Stud structure capable of accurately measuring pressure in real time Download PDFInfo
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- CN110953233A CN110953233A CN201911105405.0A CN201911105405A CN110953233A CN 110953233 A CN110953233 A CN 110953233A CN 201911105405 A CN201911105405 A CN 201911105405A CN 110953233 A CN110953233 A CN 110953233A
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- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 238000012935 Averaging Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 125000006850 spacer group Chemical group 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L5/243—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using washers
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a stud bolt structure capable of accurately measuring pressure in real time, which comprises a force-measuring stud bolt, a first pressure measuring module, a second pressure measuring module, a wireless transmission module and a single chip microcomputer module, wherein the force-measuring stud bolt is connected with the first pressure measuring module; the force-measuring stud bolt comprises a bolt rod part and a nut, wherein a lead through hole which penetrates through and is communicated with the bolt rod part and the nut is formed in the bolt rod part and the nut, and a nut thread blind hole and a spring dynamometer channel are formed in the nut; first pressure measurement module is including the gasket, and the gasket is close to the nut setting, and bolt pole portion runs through the gasket, is provided with miniature force sensor array on the gasket, and second pressure measurement module is including spring dynamometer array, and spring dynamometer array sets up in the spring dynamometer passageway, and first pressure measurement module and second pressure measurement module laminating set up. The gasket matched with the nut adopts a micro force sensor array, the interior of the nut adopts a spring dynamometer array, and the purposes of reducing errors and accurately measuring are achieved by a double-measurement averaging method.
Description
Technical Field
The invention belongs to the technical field of mechanical engineering, and particularly relates to a stud bolt structure capable of accurately measuring pressure in real time.
Background
Bolt (or screw) group connection is one of the most common connection modes in modern mechanical engineering application, product assembly and other occasions. For the pre-tightening force measurement before the product assembly and the interaction force measurement after the product assembly and application, the special force measuring instrument is adopted for measurement, so that the operation is troublesome, and the labor force and the financial expenditure are increased.
Pressure measurement during engineering applications and instrument assembly is becoming more and more common in today's times. At present, the mutual acting force between two devices connected by a bolt is not directly measured, the bolt can not only connect the two devices, but also measure the pretightening force born by the devices and the acting force between the devices, so that the pretightening force and the mutual acting force between the connecting devices born by the bolt can be measured by the stud bolt to reflect the assembly quality and the reliability of the whole device. Particularly, the real-time monitoring of the pressure applied to a part in the application occasions of production machinery, assembly sites, bridges, automobiles, large buildings and the like can directly determine whether the instrument can normally operate or not, and even concern about the personnel safety. For example, in the installation process of large-scale equipment, accessories such as a speed reduction rack and a mechanical seal seat need to be installed, one end of a stud bolt is screwed into a main body, the other end of the stud bolt is fixed with the accessories through a nut, and meanwhile, the magnitude of the interaction force between the main body and the accessories needs to be monitored in real time.
Disclosure of Invention
The present invention is directed to a stud bolt structure capable of accurately measuring pressure in real time, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a stud bolt structure capable of accurately measuring pressure in real time comprises a force measuring stud bolt, a first pressure measuring module, a second pressure measuring module, a wireless transmission module and a single chip microcomputer module, wherein the first pressure measuring module and the second pressure measuring module are respectively arranged on the force measuring stud bolt, the first pressure measuring module and the second pressure measuring module are respectively electrically connected with the wireless transmission module, and the wireless transmission module is electrically connected with the single chip microcomputer module;
the force-measuring stud bolt comprises a bolt rod part and a nut, wherein the nut is arranged at one end of the bolt rod part, a lead through hole which penetrates through and is communicated with the bolt rod part and the nut is formed in the bolt rod part and the nut, a nut thread blind hole and a spring dynamometer channel are formed in the nut, the spring dynamometer channel is arranged around the nut thread blind hole, and the lead through hole penetrates through the nut thread blind hole;
the first pressure measurement module comprises a gasket, the gasket is arranged close to the nut, the rod part of the bolt penetrates through the gasket, a micro force sensor array is arranged on the gasket, the second pressure measurement module comprises a spring dynamometer array, the spring dynamometer array is arranged in a spring dynamometer channel, and the first pressure measurement module and the second pressure measurement module are mutually attached;
the wireless transmission module comprises a wireless gateway, a wireless node and a wire, wherein the wire penetrates through the wire through hole and is connected with the wireless gateway, the wireless node, the miniature force sensor array and the spring dynamometer array.
Preferably, the micro force sensor array is formed by arranging a plurality of micro force sensors into three circles, and comprises twenty-eight micro force sensors which are four, eight and sixteen respectively from inside to outside.
Preferably, the miniature force sensor can be a piezoelectric type or a pneumatic type force sensor.
Preferably, the first pressure measurement module further comprises a first protection gasket and a second protection gasket, and the first protection gasket and the second protection gasket are respectively arranged on two sides of the gasket.
Preferably, the spring dynamometer array comprises eight vertically arranged miniature spring dynamometers, and each miniature spring dynamometer is connected through a lead and transmits signals to the wireless gateway.
Preferably, the single chip microcomputer module comprises a single chip microcomputer, an A/D converter, a liquid crystal display, a numerical value setting button and an alarm;
the liquid crystal display is used for displaying the pressure value output by the singlechip;
the numerical value setting button is used for setting a safe limit value which can be borne by the device where the force measuring stud bolt is located by a user according to an actual situation;
the alarm gives an alarm when the numerical value measured by the force-measuring stud bolt is greater than the safety value set by a user.
Preferably, the method for measuring the pressure in real time through the stud bolt structure comprises the following steps:
the method comprises the following steps: three circles of micro force sensor arrays are distributed on the gasket and are evenly distributed from inside to outside in sequence, and the coefficient of each circle is set as k1、k2、k3The numerical value of each circle of measurement is processed by the single chip microcomputer to obtain a weighted average value and multiplied by respective coefficients to obtain a final force measurement result;
step two: when a miniature spring dynamometer in the nut is stressed, the numerical value changes and a numerical difference signal is output;
step three: the lead transmits a signal measured by the micro force sensor array and a numerical difference signal generated by the spring dynamometer array to the wireless node through the wireless gateway;
step four: the operational amplifier amplifies two paths of original signals of the micro force sensor array and the spring dynamometer array received by the singlechip to an electric signal which is enough to be identified and received by the data acquisition card, and the A/D converter converts the analog signal into a digital signal;
step five: carrying out weighted average algorithm processing on the micro force sensor array, carrying out weighted recursive average filtering processing on the spring dynamometer array, and then carrying out average processing on the measurement results of the micro force sensor array and the spring dynamometer array;
step six: the liquid crystal display displays the pressure value output by the single chip microcomputer, compares the safety initial value set by a user with the measured value of the stud bolt in real time and gives an alarm.
Has the advantages that:
(1) according to the stud bolt structure capable of accurately measuring pressure in real time, the stud bolt structure is adopted, so that the mounting and dismounting of large-scale machinery application occasions are facilitated; the gasket matched with the nut adopts a miniature force sensor array, a spring dynamometer array is adopted in the nut, and the purposes of reducing errors and accurately measuring are achieved by a double-measurement averaging method.
(2) According to the stud structure capable of accurately measuring pressure in real time, the spring dynamometer is arranged inside the nut matched with the force-measuring stud, so that instrument damage caused by external friction is avoided; the pressure value is obtained through the miniature force sensor array attached to the gasket, and the gasket is vertically matched with the protection gasket, so that the condition of inaccurate result caused by friction and vibration in the operation process can be avoided, and the force can be conveniently measured on any occasion.
(3) According to the stud structure capable of accurately measuring pressure in real time, the wireless node is adopted to transmit signals, so that the situation of complex assembly caused by wire connection can be avoided; the safety value is set through the numerical value setting button, when the real-time measurement value is larger than or equal to the safety value, the alarm immediately gives an alarm, equipment can be protected, a security officer can be reminded, and remote control on application occasions such as large buildings, bridges and machinery is facilitated.
(4) According to the stud bolt structure capable of accurately measuring pressure in real time, the force measuring stud bolt, the force measuring nut and the gasket are all kits meeting production matching standards, a fastening connection effect and a force measuring effect can be achieved, other force measuring instruments are not required to be additionally arranged, and the using process is simplified.
Drawings
Fig. 1 is a block diagram showing an overall structure of a stud bolt structure capable of precisely measuring pressure in real time according to the present invention.
Fig. 2 is a schematic diagram of the overall distribution of a stud structure capable of accurately measuring pressure in real time according to the present invention.
Fig. 3 is an assembly view of a stud bolt structure capable of precisely measuring pressure in real time according to the present invention.
FIG. 4 is a design diagram of a micro force sensor array at a spacer of a stud structure capable of real-time precision pressure measurement according to the present invention.
Fig. 5 is a design diagram of an array of spring load cells at nuts of a stud structure capable of accurately measuring pressure in real time according to the present invention.
Fig. 6 is a schematic cross-sectional view of a nut of a stud structure capable of precisely measuring pressure in real time according to the present invention.
Fig. 7 is a schematic view of a threaded rod of a stud structure capable of precisely measuring pressure in real time according to the present invention.
FIG. 8 is a schematic diagram of the connection between a wireless node and a single chip microcomputer of a stud bolt structure capable of precisely measuring pressure in real time.
Fig. 9 is a schematic view of a numerical display and alarm apparatus of a stud bolt structure capable of accurately measuring pressure in real time according to the present invention.
FIG. 10 is a control flow chart of a stud bolt structure capable of real-time precision pressure measurement according to the present invention.
In the figure: 1-force-measuring stud bolt, 11-bolt rod part, 12-nut, 13-lead through hole, 14-nut thread blind hole, 15-spring dynamometer channel, 2-gasket, 3-micro force sensor array, 4-spring dynamometer array, 5-first protective washer and 6-second protective washer.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1-10, a stud bolt structure capable of precisely measuring pressure in real time, which has both connection and force measurement functions, comprises a force measurement stud bolt 1, a first pressure measurement module, a second pressure measurement module, a wireless transmission module and a single chip microcomputer module, wherein the first pressure measurement module and the second pressure measurement module are respectively arranged on the force measurement stud bolt 1, the first pressure measurement module and the second pressure measurement module are respectively electrically connected with the wireless transmission module, and the wireless transmission module is electrically connected with the single chip microcomputer module;
the force-measuring stud bolt 1 comprises a bolt rod part 11 and a nut 12, wherein the nut 12 is arranged at one end of the bolt rod part 11, a lead through hole 13 which is communicated in a penetrating manner is formed in the bolt rod part 11 and the nut 12, a nut thread blind hole 14 and a spring dynamometer channel 15 are formed in the nut 12, the spring dynamometer channel 15 is arranged around the nut thread blind hole 14, the lead through hole 13 penetrates through the nut thread blind hole 14, and the nut thread blind hole 14 is used for fixing and screwing the bolt;
the first pressure measurement module comprises a gasket 2, the gasket 2 is arranged close to a nut 12, the bolt rod 11 penetrates through the gasket 2, a micro force sensor array 3 is arranged on the gasket 2, the second pressure measurement module comprises a spring dynamometer array 4, the spring dynamometer array 4 is arranged in a spring dynamometer channel 15, and the first pressure measurement module and the second pressure measurement module are mutually attached;
the wireless transmission module comprises a wireless gateway, a wireless node and a wire, wherein the wire penetrates through the wire through hole 13 and is connected with the wireless gateway, the wireless node, the miniature force sensor array 3 and the spring dynamometer array 4.
The micro force sensor array 3 is formed by arranging a plurality of micro force sensors into three circles, and comprises twenty-eight micro force sensors which are four, eight and sixteen respectively from inside to outside.
The miniature force sensor can be a piezoelectric type or a pneumatic type force sensor.
The first pressure measurement module further comprises a first protection gasket 5 and a second protection gasket 6, wherein the first protection gasket 5 and the second protection gasket 6 are respectively arranged on two sides of the gasket 2.
The spring dynamometer array 4 comprises eight vertically arranged miniature spring dynamometers, and each miniature spring dynamometer is connected through a lead and transmits signals to a wireless gateway.
The single chip microcomputer module comprises a single chip microcomputer, an A/D converter, a liquid crystal display, a numerical value setting button and an alarm;
the liquid crystal display is used for displaying the pressure value output by the singlechip;
the numerical value setting button is used for setting a safe limit value which can be borne by the device where the force measuring stud bolt is located by a user according to an actual situation;
the alarm gives an alarm when the numerical value measured by the force-measuring stud bolt is greater than the safety value set by a user.
A method of measuring pressure in real time by a stud bolt structure, comprising the steps of:
the method comprises the following steps: three circles of micro force sensor arrays 3 are distributed on the gasket 2 and are evenly distributed from inside to outside in sequence, and the coefficient of each circle is respectively set as k1、k2、k3The numerical value of each circle of measurement is processed by the single chip microcomputer to obtain a weighted average value and multiplied by respective coefficients to obtain a final force measurement result;
step two: when the micro spring dynamometer in the nut 12 is under pressure, the numerical value changes and a numerical value difference signal is output;
step three: the lead transmits the signal measured by the micro force sensor array 3 and the numerical difference signal generated by the spring dynamometer array 4 to the wireless node through the wireless gateway;
step four: the operational amplifier amplifies two paths of original signals of the micro force sensor array 3 and the spring dynamometer array 4 received by the singlechip to an electric signal which is enough to be identified and received by the data acquisition card, and the A/D converter converts the analog signal into a digital signal;
step five: carrying out weighted average algorithm processing on the micro force sensor array 3, carrying out weighted recursive average filtering processing on the spring dynamometer array 4, and then carrying out average processing on the measurement results of the micro force sensor array and the spring dynamometer array;
step six: the liquid crystal display displays the pressure value output by the single chip microcomputer, compares the safety initial value set by a user with the measured value of the stud bolt in real time and gives an alarm.
The method mainly comprises the following four steps:
1. acquisition of signals:
the force signal for measuring pressure comes from two parts: one part is the pressure measured by the micro force sensor array 3 attached to the gasket 2 matched with the nut 12; the other part is the difference in the values of the array of spring load cells 4 in the nut 12 which cooperates with the load stud 1 as a result of the forces applied. The force-measuring stud bolt 1 is used for assembling an instrument, and the force-measuring stud bolt 1 and the gasket 2 are matched to form a clamping device and measure pressure in real time.
2. And (3) transmission of signals:
the numerical value measured by the force measuring sensor of each circle and the numerical value measured by the spring dynamometer array 4 in the nut 12 are connected to the wireless gateway through a lead, and finally, the signal is transmitted to the single chip microcomputer through a wireless node.
3. And (3) processing signals:
the analog signals transmitted to the wireless gateway by the wireless nodes are too weak to be directly converted into digital signals, and the digital signals need to be amplified by an amplifying circuit and then converted into the digital signals by an A/D converter. The single chip microcomputer firstly carries out weighted average algorithm processing on each circle of force transducer, and then calculates the final total gasket stress average value according to each circle of coefficients; secondly, carrying out weighted recursive average filtering on the numerical value measured by the miniature spring dynamometer in the nut 12; and then the measured results of the two are averaged. The LCD displays the result, compares the set safety value with the measured value in real time, and immediately responds to the interruption when the measured value is detected to be greater than or equal to the safety value, cuts off the power supply and gives an alarm.
According to the stud bolt structure capable of accurately measuring pressure in real time, the stud bolt structure is adopted, so that the mounting and dismounting of large-scale machinery application occasions are facilitated; the gasket 2 matched with the nut 12 adopts a micro force sensor array 3, a spring dynamometer array 4 is adopted in the nut 12, and the purposes of reducing errors and accurately measuring are achieved through a double-measurement averaging method.
According to the stud structure capable of accurately measuring pressure in real time, the spring dynamometer is arranged inside the nut 12 matched with the force-measuring stud 1, so that instrument damage caused by external friction is avoided; the pressure value is obtained through the miniature force sensor array 3 attached to the gasket 2, and the gasket 2 is vertically matched with the protection gasket, so that the condition that the result is inaccurate due to friction and vibration in the operation process can be avoided, and the force can be conveniently measured on any occasion.
According to the stud structure capable of accurately measuring pressure in real time, the wireless node is adopted to transmit signals, so that the situation of complex assembly caused by wire connection can be avoided; the safety value is set through the numerical value setting button, when the real-time measurement value is larger than or equal to the safety value, the alarm immediately gives an alarm, equipment can be protected, a security officer can be reminded, and remote control on application occasions such as large buildings, bridges and machinery is facilitated.
According to the stud bolt structure capable of accurately measuring pressure in real time, the force measuring stud bolt 1, the nut 12 and the gasket 2 are all kits meeting production matching standards, a fastening connection effect and a force measuring effect can be achieved, other force measuring instruments are not needed, and the using process is simplified.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the above-described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent alterations and modifications are intended to be included within the scope of the invention, without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a stud structure that can real-time precision measurement pressure which characterized in that:
the device comprises a force-measuring stud bolt (1), a first pressure measuring module, a second pressure measuring module, a wireless transmission module and a single chip microcomputer module, wherein the first pressure measuring module and the second pressure measuring module are respectively arranged on the force-measuring stud bolt (1), the first pressure measuring module and the second pressure measuring module are respectively electrically connected with the wireless transmission module, and the wireless transmission module is electrically connected with the single chip microcomputer module;
the force-measuring stud bolt (1) comprises a bolt rod part (11) and a nut (12), the nut (12) is arranged at one end of the bolt rod part (11), a lead through hole (13) which penetrates through and is communicated with the bolt rod part (11) and the nut (12) is formed in the bolt rod part (11) and the nut (12), a nut thread blind hole (14) and a spring dynamometer channel (15) are formed in the nut (12), the spring dynamometer channel (15) is arranged around the nut thread blind hole (14), and the lead through hole (13) penetrates through the nut thread blind hole (14);
the first pressure measurement module comprises a gasket (2), the gasket (2) is arranged close to a nut (12), the bolt rod (11) penetrates through the gasket (2), a micro force sensor array (3) is arranged on the gasket (2), the second pressure measurement module comprises a spring dynamometer array (4), the spring dynamometer array (4) is arranged in a spring dynamometer channel (15), and the first pressure measurement module and the second pressure measurement module are mutually attached;
the wireless transmission module comprises a wireless gateway, a wireless node and a wire, wherein the wire penetrates through a wire through hole (13), and the wire is connected with the wireless gateway, the wireless node, the micro force sensor array (3) and the spring dynamometer array (4).
2. The stud bolt structure capable of real-time precision pressure measurement according to claim 1, characterized in that:
the micro force sensor array (3) is formed by arranging a plurality of micro force sensors into three circles, and comprises twenty-eight micro force sensors which are four, eight and sixteen respectively from inside to outside.
3. The stud bolt structure capable of real-time precision pressure measurement according to claim 2, characterized in that:
the miniature force sensor can be a piezoelectric type or a pneumatic type force sensor.
4. The stud bolt structure capable of real-time precision pressure measurement according to claim 1, characterized in that:
the first pressure measurement module further comprises a first protection gasket (5) and a second protection gasket (6), and the first protection gasket (5) and the second protection gasket (6) are respectively arranged on two sides of the gasket (2).
5. The stud bolt structure capable of real-time precision pressure measurement according to claim 1, characterized in that:
the spring dynamometer array (4) comprises eight vertically arranged miniature spring dynamometers, and each miniature spring dynamometer is connected through a lead and transmits signals to the wireless gateway.
6. The stud bolt structure capable of real-time precision pressure measurement according to claim 1, characterized in that:
the single chip microcomputer module comprises a single chip microcomputer, an A/D converter, a liquid crystal display, a numerical value setting button and an alarm;
the liquid crystal display is used for displaying the pressure value output by the singlechip;
the numerical value setting button is used for setting a safe limit value which can be borne by the device where the force measuring stud bolt is located by a user according to an actual situation;
the alarm gives an alarm when the numerical value measured by the force-measuring stud bolt is greater than the safety value set by a user.
7. A method for measuring pressure in real time by means of a stud bolt structure, wherein the stud bolt structure capable of precisely measuring pressure in real time according to any one of claims 1 to 6 is used, comprising the steps of:
the method comprises the following steps: three circles of micro force sensor arrays (3) are distributed on the gasket (2) and are uniformly distributed at intervals from inside to outside in sequence, and the coefficient of each circle is set as k1、k2、k3The numerical value of each circle of measurement is processed by the single chip microcomputer to obtain a weighted average value and multiplied by respective coefficients to obtain a final force measurement result;
step two: when a micro spring dynamometer in the nut (12) is stressed, the numerical value changes and a numerical value difference signal is output;
step three: the lead transmits a signal measured by the micro force sensor array (3) and a numerical difference signal generated by the spring dynamometer array (4) to a wireless node through a wireless gateway;
step four: the operational amplifier amplifies two paths of original signals of a micro force sensor array (3) and a spring dynamometer array (4) received by the singlechip to an electric signal which is sufficiently identified and received by the data acquisition card, and the A/D converter converts an analog signal into a digital signal;
step five: carrying out weighted average algorithm processing on the micro force sensor array (3), carrying out weighted recursive average filtering processing on the spring dynamometer array (4), and carrying out average processing on the measurement results of the micro force sensor array and the spring dynamometer array;
step six: the liquid crystal display displays the pressure value output by the single chip microcomputer, compares the safety initial value set by a user with the measured value of the stud bolt in real time and gives an alarm.
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Cited By (3)
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| CN111562046A (en) * | 2020-06-17 | 2020-08-21 | 潘欢悦 | Stud bolt for iron tower frame, assembly for measuring axial force of stud bolt and measuring method |
| CN111693199A (en) * | 2020-05-05 | 2020-09-22 | 南昌大学 | Bolt, measuring system and measuring method for accurately measuring pressure in real time |
| CN114719888A (en) * | 2022-02-23 | 2022-07-08 | 瑞华智控电子科技(北京)有限公司 | Intelligent fan bolt online health monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693199A (en) * | 2020-05-05 | 2020-09-22 | 南昌大学 | Bolt, measuring system and measuring method for accurately measuring pressure in real time |
| CN111562046A (en) * | 2020-06-17 | 2020-08-21 | 潘欢悦 | Stud bolt for iron tower frame, assembly for measuring axial force of stud bolt and measuring method |
| WO2021253348A1 (en) * | 2020-06-17 | 2021-12-23 | 潘欢悦 | Double-end bolt for iron tower frame, assembly for measuring axial force thereof, and measuring method |
| CN114719888A (en) * | 2022-02-23 | 2022-07-08 | 瑞华智控电子科技(北京)有限公司 | Intelligent fan bolt online health monitoring system |
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