CN111537759A - Rotating body angular speed non-contact measurement and control system - Google Patents
Rotating body angular speed non-contact measurement and control system Download PDFInfo
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- CN111537759A CN111537759A CN202010298750.7A CN202010298750A CN111537759A CN 111537759 A CN111537759 A CN 111537759A CN 202010298750 A CN202010298750 A CN 202010298750A CN 111537759 A CN111537759 A CN 111537759A
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- wireless communication
- microprocessor
- communication module
- rotating body
- contact measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
Abstract
The invention relates to the field of rotating speed measurement, in particular to a rotating body angular speed non-contact measurement and control system which comprises a Hall element, a microprocessor 1, a wireless communication module 2, a power management module, a microprocessor 2 and a display module. The Hall element, the wireless communication module 1 and the power management module are connected with the microprocessor 1; the second wireless communication module, the display module and the power management module are connected with the microprocessor 2. The rotating speed of the rotating body is measured through the Hall element and the microprocessor 1, and is transmitted to the microprocessor 2 through the wireless communication module to be subjected to data processing, and then is transmitted to the display module. The invention adopts wireless transmission, has low investment, high speed and better anti-interference performance. And a non-contact Hall sensor is selected, so that the sensitivity is high and the power consumption is low. The system has the advantages of visual detection process and accurate data, and provides an effective, convenient and quick measurement method for the acceleration measurement of the rotating body.
Description
Technical Field
The invention relates to the field of rotating speed measurement, in particular to a non-contact measuring and controlling system for the angular speed of a rotating body.
Background
The rotator device is the most widely used device in production and life, and the rotator plays a vital role in various production processes, so that the stable operation of the rotator device is one of important factors for ensuring production. In industrial automation production, real-time detection of the rotating speed of the rotating body device is an important way for measuring the running speed of equipment and observing whether the device works abnormally. The conventional measurement method is to install a corresponding measurement circuit on the rotating body, but the instability and complexity of the circuit greatly hinder the rotation speed measurement, and simultaneously, radio frequency noise is introduced due to the intermittent contact or poor contact of circuit hardware, and electromagnetic interference is generated in view of the defects of the measurement method. Common solutions to the above problem are: firstly, a microprocessor with higher processing capacity is adopted; secondly, developing an independent rotating speed measuring system; third, digital filtering techniques are employed. The former two methods mainly solve the problem of measurement error from the perspective of hardware, which easily causes the increase of cost; the third method depends on the specific content of the algorithm, however, the existing common filtering algorithms are difficult to implement. Therefore, a measuring system with simple circuit structure, accurate test, simple operation and strong anti-interference capability is urgently needed.
Disclosure of Invention
The invention aims to design a rotating body angular speed non-contact measurement and control system which has the advantages of simple structure, less hardware, low cost, high precision and strong anti-interference capability, so that the rotating speed of a rotating body is accurately measured, signal transmission is realized, and the working condition of the rotating body is more accurately monitored and controlled.
In order to achieve the above purpose, the present invention provides a technical solution: the utility model provides a rotor angular velocity non-contact measurement and control system, includes data acquisition end and data processing and display end, and the data acquisition end includes hall element, microprocessor 1, wireless communication module 1, power management module, and data processing and display end includes microprocessor 2, display module, wireless communication module 2.
The Hall element is used for measuring the angular rate of the rotator, the microprocessor 1 receives the rotating speed data of the Hall element and sends the rotating speed data through the wireless communication module 1, the wireless communication module 1 sends the rotating speed data of the rotator in real time, the power management module is used for supplying power to all parts of the rotating speed data acquisition device, the wireless communication module 2 is used for receiving the rotating speed data of the rotator, the microcontroller 2 processes and analyzes the rotating speed data of the rotator received through the wireless communication module 2, meanwhile, the rotating speed data of the rotator are processed, the output is the angular rate data, and the display module is used for interaction between the angular rate non-contact measurement and control system of the rotator and a user.
Further, the microprocessor 1 includes an a/D conversion function, and converts an analog signal output from the hall element into a processable digital signal during the rotation speed measurement process, and transmits the processed digital signal through the wireless communication module.
Further, the microprocessor 2 includes a counter and a timer, and a timer interrupt mode is adopted when pulse counting is performed, that is, pulse counting occurring within a specified time of the timer is rotational speed data, and the angular rate data is sent to the display module after processing.
Further, the wireless communication module 1 and the wireless communication module 2 adopt HC-08 Bluetooth modules.
Still further, the display module employs an LCD1602 a.
As the preferred scheme of the invention, the rotating speed measuring sensor is a non-contact Hall sensor. When the device is used, a piece of magnetic steel is arranged at the edge of the rotating body to be detected, the Hall element and the magnetic steel are within the range of 2cm, and the magnetic steel is made of neodymium iron boron materials.
The working process of the data acquisition end of the rotating body angular speed non-contact measurement and control system is as follows:
1) carrying out system initialization on the microprocessor 1;
2) setting the wireless transceiver module 1 to a data sending state;
3) after the Hall element is started, a pulse signal is output, and the microprocessor 1 receives the pulse signal;
4) the microprocessor 1 starts to perform A/D conversion, and converts the received analog signal into a processable digital signal;
5) the wireless communication module 1 sends the processed rotation speed data to the wireless communication module 2.
The data processing and display end work flow of the rotating body angular speed non-contact measuring and controlling system is as follows:
1) carrying out system initialization on the microprocessor 2;
2) the wireless communication module 2 receives the rotating speed data of the wireless communication module 1;
3) the wireless communication module 2 transmits the received rotating speed data to the microprocessor 2;
4) the microprocessor 2 starts timing interruption after receiving the pulse signal, reads the pulse number within the specified time of the timer and processes the pulse number, and outputs an angular rate value in real time;
5) the microcontroller 2 sends the processed angular rate data to the display module.
The non-contact measuring and controlling system for the angular speed of the rotating body has the following benefits: the rotating speed of the rotating body is measured by wireless transmission, the investment is low, the transmission does not need wiring, and the rotating body has good adaptability to the working environment and can be applied to some special production environments. The invention selects the non-contact Hall sensor, does not influence the rotation and the reversing of the rotating body, can lead out the transmission line for counting measurement, has good real-time performance, high sensitivity and low circuit power consumption, and can be directly interfaced with various logic circuits. In addition, data transmission between the wireless communication modules adopts high-speed transmission, the transmission speed is high, and the anti-interference performance is higher.
Drawings
FIG. 1 is a block diagram of a non-contact measurement and control system for angular velocity of a rotating body according to the present invention;
FIG. 2 is a schematic view of a data acquisition device according to the present invention;
FIG. 3 is a schematic diagram of a data processing and display device according to the present invention;
FIG. 4 is a schematic diagram illustrating the use of the tachometer sensor in accordance with the present invention;
FIG. 5 is a flow chart of the data acquisition device of the present invention;
FIG. 6 is a flowchart illustrating the operation of the data processing and display device according to the present invention.
Detailed Description
As shown in fig. 1, a system for non-contact measurement and control of angular velocity of a rotating body comprises a data acquisition end and a data processing and display end, wherein the data acquisition end comprises a hall element, a microprocessor 1, a wireless communication module 1 and a power management module, and the data processing and display section comprises a microprocessor 2, a display module and a wireless communication module 2.
As shown in fig. 2, the data acquisition device of the rotator angular velocity non-contact measurement and control system includes a hall element, a microprocessor 1, a power management module and a wireless communication module 1.
The Hall element is used for measuring the rotating speed of the rotating body, and as a preferable scheme of the invention, the Hall element is a non-contact Hall sensor. The non-contact Hall sensor does not influence the rotation reversing of the rotating body, and can lead out analog signals which are convenient to process for processing and counting. The Hall element has wide voltage range, good consistency, high sensitivity and low circuit power consumption, and can be directly interfaced with various logic circuits. Therefore, the rotating speed measuring sensor of the system adopts the non-contact Hall sensor to realize the conversion from the rotating speed parameter to the electrical parameter.
The microprocessor 1 comprises an A/D conversion function, converts an analog signal output by the Hall element into a processable digital signal in the process of measuring the rotating speed, and sends the processable digital signal to the wireless communication module 2 through the wireless communication module 1. The power management module is used for supplying power to all components of a data acquisition end of the rotating body angular speed non-contact measurement and control system; the wireless communication module 1 is used for information interaction of a data acquisition end and a data processing and displaying end of the rotating body angular speed non-contact measurement and control system.
As shown in fig. 3, the data processing and displaying end includes a microprocessor 2, a display module, and a wireless communication module 2.
After the wireless communication module 2 receives the rotating speed information of the wireless communication module 1, the data are transmitted to the microprocessor 2 for processing, the microprocessor 2 comprises a counter and a timer, a timing interrupt mode is adopted during pulse counting, namely pulse counting occurring within the set time of the timer is rotating speed data, and the angular rate data are sent to the display module after processing. The display module is used for the non-contact measurement of the angular speed of the whole rotating body and the interaction of the control system and a user; the wireless transceiver module 2 is used for information interaction between the data processing and displaying end and the data acquisition end.
As shown in figure 4, when the system is used, a piece of magnetic steel is arranged at the edge of the rotating body to be detected, the distance between the Hall element and the magnetic steel is within the range of 2cm, and the magnetic steel is made of neodymium iron boron materials. A piece of magnetic steel is adhered near the edge of the non-magnetic material of the rotating body (the rotation of the rotating body is not influenced, and the adhesion is firm), then the Hall element is fixed in the 2cm of the rotating circumference of the fan blade, the magnetic steel rotates along with the rotating body, and the Hall element outputs a pulse on the cutting of the magnetic line of force near the magnet every turn, so that the effective real-time pulse counting is carried out.
As shown in fig. 5, it is a work flow of the data acquisition device of the present system for non-contact measurement and control of angular velocity of a rotating body:
1) carrying out system initialization on the microprocessor 1;
2) setting the wireless transceiver module 1 to a data sending state;
3) after the Hall element is started, a pulse signal is output, and the microprocessor 1 receives the pulse signal;
4) the microprocessor 1 starts to perform A/D conversion, and converts the received analog signal into a processable digital signal;
5) the wireless communication module 1 sends the processed rotation speed data to the wireless communication module 2.
As shown in fig. 6, the data processing and displaying device of the present system for non-contact measurement and control of angular velocity of a rotating body has the following working procedures:
1) carrying out system initialization on the microprocessor 2;
2) the wireless communication module 2 receives the rotating speed data of the wireless communication module 1;
3) the wireless communication module 2 transmits the received rotating speed data to the microprocessor 2;
4) the microprocessor 2 starts timing interruption after receiving the pulse signal, reads the pulse number within the specified time of the timer and processes the pulse number, and outputs an angular rate value in real time;
5) the microcontroller 2 sends the processed angular rate data to the display module.
Claims (10)
1. A non-contact measurement and control system for the angular speed of rotary body is composed of data acquisition end, data processing and display end,
the data acquisition end comprises a Hall element, a microprocessor 1, a wireless communication module 1 and a power management module,
the data processing and displaying section comprises a microprocessor 2, a display module and a wireless communication module 2,
the hall element is used for the measurement of the angular rate of the rotor,
the microprocessor 1 receives the rotating speed data of the Hall element and sends the rotating speed data through the wireless communication module 1,
the wireless communication module 1 is used for transmitting the rotating speed data of the rotating body,
the power management module is used for supplying power to all parts of the rotating speed data acquisition device,
the wireless communication module 2 is used for receiving the rotating speed data of the rotating body,
the microcontroller 2 processes and analyzes the rotating speed data of the rotating body received by the wireless communication module 2, processes the rotating speed data of the rotating body at the same time, outputs the data as angular rate data,
the display module is used for the non-contact measurement of the angular speed of the rotating body and the interaction of the control system and a user.
2. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
the rotating speed measuring sensor is a non-contact Hall sensor.
3. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
the wireless communication modules 1 and 2 adopt HC-08 Bluetooth modules.
4. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
the microprocessor 1 comprises an A/D conversion function, converts an analog signal output by the Hall element into a processable digital signal in the process of measuring the rotating speed, and sends the processable digital signal through the wireless communication module.
5. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
the microprocessor 2 comprises a counter and a timer, a timing interruption mode is adopted when pulse counting is carried out, namely pulse counting generated within the set time of the timer is rotating speed data, and the angular rate data is sent to the display module after processing.
6. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
the display module adopts an LCD1602a display screen.
7. The rotor angular velocity non-contact measurement and control system of claim 1, wherein:
when the system is used, a piece of magnetic steel is arranged at the edge of the rotating body to be detected, and the Hall element and the magnetic steel are within the range of 2 cm.
8. The system for non-contact measurement and control of angular velocity of a rotating body according to claim 5, wherein said magnetic steel is selected from neodymium iron boron materials.
9. The system for non-contact measurement and control of angular velocity of a rotating body according to claim 1, wherein the data acquisition end workflow of the system for non-contact measurement and control of angular velocity of a rotating body is as follows:
1) carrying out system initialization on the microprocessor 1;
2) setting the wireless transceiver module 1 to a data sending state;
3) after the Hall element is started, a pulse signal is output, and the microprocessor 1 receives the pulse signal;
4) the microprocessor 1 starts to perform A/D conversion, and converts the received analog signal into a processable digital signal;
5) the wireless communication module 1 sends the processed rotation speed data to the wireless communication module 2.
10. The system for non-contact measurement and control of angular velocity of a rotating body according to claim 1, wherein the data processing and display end workflow of the system for non-contact measurement and control of angular velocity of a rotating body is as follows:
1) carrying out system initialization on the microprocessor 2;
2) the wireless communication module 2 receives the rotating speed data of the wireless communication module 1;
3) the wireless communication module 2 transmits the received rotating speed data to the microprocessor 2;
4) the microprocessor 2 starts timing interruption after receiving the pulse signal, reads the pulse number within the specified time of the timer and processes the pulse number, and outputs an angular rate value in real time;
5) the microcontroller 2 sends the processed angular rate data to the display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010298750.7A CN111537759A (en) | 2020-04-16 | 2020-04-16 | Rotating body angular speed non-contact measurement and control system |
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| CN202010298750.7A CN111537759A (en) | 2020-04-16 | 2020-04-16 | Rotating body angular speed non-contact measurement and control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660323A (en) * | 2020-12-22 | 2022-06-24 | 莱克电气股份有限公司 | Rotating speed measuring method, device, equipment and storage medium |
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| CN101707879A (en) * | 2007-06-06 | 2010-05-12 | 海卓-艾尔公司 | Angular position sensor |
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| CN104569477A (en) * | 2015-01-20 | 2015-04-29 | 盐城工学院 | Draught fan wireless velocity measurement system |
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Cited By (2)
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Application publication date: 20200814 |