CN210198667U - Motor vibration detection device - Google Patents
Motor vibration detection device Download PDFInfo
- Publication number
- CN210198667U CN210198667U CN201921236494.8U CN201921236494U CN210198667U CN 210198667 U CN210198667 U CN 210198667U CN 201921236494 U CN201921236494 U CN 201921236494U CN 210198667 U CN210198667 U CN 210198667U
- Authority
- CN
- China
- Prior art keywords
- signal
- circuit
- module
- analog
- digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The application relates to the technical field of motor detection, and discloses a motor vibration detection device, including speedtransmitter, signal processing module, analog-to-digital conversion module and wireless transmission module, wireless transmission module is including the microcontroller and the wireless module of the built-in Lora wireless radio frequency chip of the wireless transmission agreement of Lora that has integrateed. The speed sensor, the signal processing module, the analog-to-digital conversion module and the microcontroller are sequentially and electrically connected, the speed sensor is installed on the motor to collect vibration signals, and the signal processing module carries out conversion processing on the vibration signals to obtain electric signals. The analog-to-digital conversion module converts the electric signal into a digital electric signal and sends the digital electric signal to the microcontroller, and the microcontroller reads the digital electric signal and sends the digital electric signal to the terminal through the Lora wireless module. This application need not to lay wired communication line through the wireless module of the Lora of built-in Lora wireless radio frequency chip, just can realize the wireless transmission of signal of telecommunication.
Description
Technical Field
The application relates to the technical field of motor detection, in particular to a motor vibration detection device.
Background
The motor can produce mechanical vibration at the in-process of operation, through the detection to mechanical vibration, can learn the running condition of motor, and then can diagnose whether the motor breaks down to the staff in time maintains. At present, a common motor vibration detection method is an electrical measurement method, and the main principle of the electrical measurement method is to convert a vibration signal of a motor into an electrical signal, analyze the electrical signal and acquire the running condition of the motor.
When the motor vibration is detected by using an electrical measurement method, a vibration signal of the motor is generally obtained through a speed sensor, and then an electrical signal obtained through processing is transmitted to a terminal through a wired communication line to be analyzed, so that the running condition of the motor is obtained.
However, when the vibration of the motor is detected by an electrical measurement method, a wired communication line needs to be arranged to realize the transmission of the electrical signal. On the basis, if the number of the motors needing to be detected is large, a plurality of communication lines need to be arranged, under the condition, the cost is increased, the complexity of line arrangement is increased, and particularly when the positions of the motors needing to be detected are special, the difficulty of line arrangement is greatly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that when detecting the vibration of the motor, the wiring communication circuit needs to be arranged to realize the transmission of electric signals, so that the cost is increased and the wiring complexity is increased, the application discloses a motor vibration detection device through the following embodiments.
The application discloses a motor vibration detection device includes: the device comprises a speed sensor, a signal processing module, an analog-to-digital conversion module and a wireless transmission module;
the wireless transmission module comprises a microcontroller and a Lora wireless module, wherein a Lora wireless transmission protocol is integrated in the microcontroller, and a Lora wireless radio frequency chip is arranged in the Lora wireless module;
the speed sensor is arranged on the motor to acquire a vibration signal of the motor;
the speed sensor is electrically connected to the signal processing module and is used for sending the vibration signal to the signal processing module;
the signal processing module is electrically connected to the analog-to-digital conversion module and is used for processing the vibration signal into an electric signal and sending the electric signal to the analog-to-digital conversion module;
the analog-to-digital conversion module is electrically connected to the microcontroller and is used for performing analog-to-digital conversion on the electric signal and sending the converted digital electric signal to the microcontroller;
the microcontroller is used for reading the digital electric signal and sending the digital electric signal to the Lora wireless module, and the Lora wireless module is used for sending the digital electric signal to a terminal.
Optionally, the signal processing module includes a differential single-ended signal conversion circuit, a filter circuit, an amplifier circuit, a first rectifier circuit, an integrator circuit, and a second rectifier circuit;
the differential single-ended signal conversion circuit is connected to the speed sensor;
the differential single-ended signal conversion circuit, the filter circuit, the amplifying circuit and the first rectifying circuit are sequentially connected in series, the integrating circuit is connected in series on a lead-out wire between the amplifying circuit and the first rectifying circuit, and the second rectifying circuit is connected in series with the integrating circuit;
the differential single-ended signal conversion circuit is used for acquiring the vibration signal, converting the vibration signal into a single-ended signal and sending the single-ended signal to the filter circuit;
the filter circuit is used for limiting the frequency of the single-ended signal to be between 10Hz and 300 Hz.
Optionally, the filter circuit includes a high-pass filter circuit and a low-pass filter circuit connected in series in sequence.
Optionally, the electrical signals include a velocity electrical signal and a displacement electrical signal;
the amplifying circuit is connected with the input end of the first rectifying circuit, and the output end of the first rectifying circuit is used for outputting the speed electric signal;
the integration circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is used for outputting the displacement electric signal.
Optionally, the analog-to-digital conversion module includes an analog-to-digital converter, and the analog-to-digital converter is an AD7705 analog-to-digital converter;
the AD7705 analog-to-digital converter comprises 16-bit pins, wherein a fourth pin, a fifth pin, a twelfth pin, a thirteenth pin and a fourteenth pin are connected to the microcontroller.
Optionally, the microcontroller is a single chip microcomputer;
and a fourth pin, a fifth pin, a twelfth pin, a thirteenth pin and a fourteenth pin of the AD7705 analog-to-digital converter are connected to the SPI interface of the single chip microcomputer.
The embodiment of the application discloses a motor vibration detection device, including speed sensor, signal processing module, analog-to-digital conversion module and wireless transmission module, wherein wireless transmission module includes microcontroller and Lora wireless module, has integrateed the Lora wireless transmission agreement in the microcontroller, the built-in Lora wireless radio frequency chip of Lora wireless module. The speed sensor is installed on the motor to collect vibration signals of the motor and send the vibration signals to the signal processing module, and the signal processing module receives the vibration signals of the motor, converts the vibration signals to obtain electric signals and sends the electric signals to the analog-to-digital conversion module; the analog-to-digital conversion module performs analog-to-digital conversion on the electric signal, sends the converted digital electric signal to the microcontroller, and the microcontroller reads the digital electric signal, sends the digital electric signal to the Lora wireless module and then sends the digital electric signal to a terminal through the Lora wireless module. The application discloses motor vibration detection device, through microcontroller and the wireless module of the Lora of built-in Lora wireless radio frequency chip, in practical application, need not to lay wired communication line, just can realize the wireless transmission of signal of telecommunication.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit structure diagram of a motor vibration detection apparatus disclosed in an embodiment of the present application;
fig. 2 is a schematic circuit structure diagram of a wireless transmission module in the motor vibration detection apparatus disclosed in the embodiment of the present application;
fig. 3 is a schematic circuit structure diagram of a signal processing module in the motor vibration detection apparatus disclosed in the embodiment of the present application.
Detailed Description
In order to solve the problem that when detecting the vibration of the motor, the wiring communication circuit needs to be arranged to realize the transmission of electric signals, so that the cost is increased and the wiring complexity is increased, the application discloses a motor vibration detection device through the following embodiments.
Referring to a schematic circuit structure diagram shown in fig. 1, a motor vibration detection apparatus disclosed in an embodiment of the present application includes: the device comprises a speed sensor, a signal processing module, an analog-to-digital conversion module and a wireless transmission module.
Referring to the schematic circuit structure diagram shown in fig. 2, the wireless transmission module includes a microcontroller and a Lora wireless module, the microcontroller is integrated with a Lora wireless transmission protocol, and the Lora wireless module is internally provided with a Lora wireless radio frequency chip. Among them, lora (long range) is a long-distance, low-power consumption wireless communication technology.
The speed sensor is installed on a crankshaft of the motor to acquire a vibration signal of the motor. The speed sensor is a magnetoelectric vibration speed sensor.
The speed sensor is electrically connected to the input end of the signal processing module, and after the speed sensor collects the vibration signal of the motor, the vibration signal is sent to the signal processing module.
The output end of the signal processing module is electrically connected to the input end of the analog-to-digital conversion module, and after the signal processing module processes the vibration signal into an electric signal, the electric signal is sent to the input end of the analog-to-digital conversion module through the output end.
The analog-to-digital conversion module is electrically connected to the microcontroller, and is used for performing analog-to-digital conversion on the electric signal and sending the converted digital electric signal to the microcontroller.
In one implementation, the analog-to-digital conversion module includes an analog-to-digital converter, which is an AD7705 analog-to-digital converter. The AD7705 analog-to-digital converter comprises 16-bit pins, wherein a fourth pin, a fifth pin, a twelfth pin, a thirteenth pin and a fourteenth pin are connected to the microcontroller.
The microcontroller is used for reading the digital electric signal and sending the digital electric signal to the Lora wireless module, and the Lora wireless module is used for sending the digital electric signal to a terminal.
Specifically, microcontroller is for the singlechip that has integrateed the Lora wireless transmission agreement, and AD7705 analog-to-digital converter's fourth pin, fifth pin, twelfth pin, thirteenth pin and fourteenth pin are connected to the hardware SPI interface of singlechip, after the singlechip reads the digital quantity signal of telecommunication, sends the digital quantity signal of telecommunication to the Lora wireless module through the serial ports, and the Lora wireless module will again the digital quantity signal of telecommunication sends to the terminal.
The embodiment of the application discloses a motor vibration detection device, including speed sensor, signal processing module, analog-to-digital conversion module and wireless transmission module, wireless transmission module is including the microcontroller and the built-in Lora wireless radio frequency chip's of having integrateed the Lora wireless transmission agreement wireless module. The speed sensor, the signal processing module, the analog-to-digital conversion module and the microcontroller are sequentially and electrically connected, the speed sensor is installed on the motor to collect vibration signals, and the signal processing module carries out conversion processing on the vibration signals to obtain electric signals. The analog-to-digital conversion module converts the electric signal into a digital electric signal and sends the digital electric signal to the microcontroller, and the microcontroller reads the digital electric signal and sends the digital electric signal to the terminal through the Lora wireless module. The utility model provides a motor vibration detection device, through microcontroller and the wireless module of the Lora of built-in Lora wireless radio frequency chip, in practical application, need not to lay wired communication line, just can realize the wireless transmission of signal of telecommunication.
Further, referring to the schematic circuit structure diagram shown in fig. 3, the signal processing module includes a differential single-ended signal conversion circuit, a filter circuit, an amplification circuit, a first rectification circuit, an integration circuit, and a second rectification circuit.
The differential single-ended signal conversion circuit is connected to the speed sensor.
The differential single-ended signal conversion circuit, the filter circuit, the amplifying circuit and the first rectifying circuit are sequentially connected in series, the integrating circuit is connected in series on a lead-out wire between the amplifying circuit and the first rectifying circuit, and the second rectifying circuit is connected in series with the integrating circuit.
The differential single-ended signal conversion circuit is used for acquiring the vibration signal, converting the vibration signal into a single-ended signal and sending the single-ended signal to the filter circuit. The vibration signal output by the speed sensor is a differential signal, namely, two lines output signals, the differential signal on two input lines is converted into a single-ended signal on one output line through a differential single-ended signal conversion circuit, and the magnitude of the single-ended signal obtained by conversion is the level difference between the two differential signals.
The filter circuit is used for limiting the frequency of the single-ended signal to be between 10Hz and 300Hz, and comprises a high-pass filter circuit and a low-pass filter circuit which are sequentially connected in series. And all signals with frequencies beyond 10Hz-300Hz are filtered out through a filter circuit.
Further, the electrical signals include a velocity electrical signal and a displacement electrical signal.
The amplifying circuit is connected with the input end of the first rectifying circuit, and the output end of the first rectifying circuit can output a stable speed electric signal through amplification and rectification.
The integration circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit can output a stable displacement electric signal through integration and rectification.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (6)
1. A motor vibration detection apparatus, comprising: the device comprises a speed sensor, a signal processing module, an analog-to-digital conversion module and a wireless transmission module;
the wireless transmission module comprises a microcontroller and a Lora wireless module, wherein a Lora wireless transmission protocol is integrated in the microcontroller, and a Lora wireless radio frequency chip is arranged in the Lora wireless module;
the speed sensor is arranged on the motor to acquire a vibration signal of the motor;
the speed sensor is electrically connected to the signal processing module and is used for sending the vibration signal to the signal processing module;
the signal processing module is electrically connected to the analog-to-digital conversion module and is used for processing the vibration signal into an electric signal and sending the electric signal to the analog-to-digital conversion module;
the analog-to-digital conversion module is electrically connected to the microcontroller and is used for performing analog-to-digital conversion on the electric signal and sending the converted digital electric signal to the microcontroller;
the microcontroller is used for reading the digital electric signal and sending the digital electric signal to the Lora wireless module, and the Lora wireless module is used for sending the digital electric signal to a terminal.
2. The apparatus of claim 1, wherein the signal processing module comprises a differential single-ended signal conversion circuit, a filter circuit, an amplification circuit, a first rectification circuit, an integration circuit, and a second rectification circuit;
the differential single-ended signal conversion circuit is connected to the speed sensor;
the differential single-ended signal conversion circuit, the filter circuit, the amplifying circuit and the first rectifying circuit are sequentially connected in series, the integrating circuit is connected in series on a lead-out wire between the amplifying circuit and the first rectifying circuit, and the second rectifying circuit is connected in series with the integrating circuit;
the differential single-ended signal conversion circuit is used for acquiring the vibration signal, converting the vibration signal into a single-ended signal and sending the single-ended signal to the filter circuit;
the filter circuit is used for limiting the frequency of the single-ended signal to be between 10Hz and 300 Hz.
3. The apparatus of claim 2,
the filter circuit comprises a high-pass filter circuit and a low-pass filter circuit which are connected in series in sequence.
4. The apparatus of claim 2, wherein the electrical signals comprise a velocity electrical signal and a displacement electrical signal;
the amplifying circuit is connected with the input end of the first rectifying circuit, and the output end of the first rectifying circuit is used for outputting the speed electric signal;
the integration circuit is connected with the input end of the second rectifying circuit, and the output end of the second rectifying circuit is used for outputting the displacement electric signal.
5. The apparatus of claim 1, wherein the analog-to-digital conversion module comprises an analog-to-digital converter, and the analog-to-digital converter is an AD7705 analog-to-digital converter;
the AD7705 analog-to-digital converter comprises 16-bit pins, wherein a fourth pin, a fifth pin, a twelfth pin, a thirteenth pin and a fourteenth pin are connected to the microcontroller.
6. The device of claim 5, wherein the microcontroller is a single-chip microcomputer;
and a fourth pin, a fifth pin, a twelfth pin, a thirteenth pin and a fourteenth pin of the AD7705 analog-to-digital converter are connected to the SPI interface of the single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921236494.8U CN210198667U (en) | 2019-08-01 | 2019-08-01 | Motor vibration detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921236494.8U CN210198667U (en) | 2019-08-01 | 2019-08-01 | Motor vibration detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210198667U true CN210198667U (en) | 2020-03-27 |
Family
ID=69864783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921236494.8U Active CN210198667U (en) | 2019-08-01 | 2019-08-01 | Motor vibration detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210198667U (en) |
-
2019
- 2019-08-01 CN CN201921236494.8U patent/CN210198667U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201918010U (en) | Voltage-current collecting and transmitting device for high-voltage system | |
| CN117288316A (en) | Vibration signal acquisition method for distributed wireless synchronous networking | |
| CN105445535A (en) | Digital current transducer and detection device | |
| CN210198667U (en) | Motor vibration detection device | |
| CN211426816U (en) | Low-power consumption wireless seismic data recording device | |
| CN201716103U (en) | Vibration detection device for micro-variation capacitance pole tower | |
| CN207832309U (en) | Load ratio bridging switch vibration signal acquisition device and analysis system | |
| CN2663986Y (en) | An intelligent type monitoring device for train wheel assembly operating state | |
| CN104879294B (en) | A kind of water pump transient signal analytical equipment and method | |
| CN203812008U (en) | Analog signal collector | |
| CN107966207A (en) | Load ratio bridging switch vibration signal acquisition device and analysis system | |
| CN206649051U (en) | Digital acceleration measurement apparatus with constant current source power supply | |
| CN211927076U (en) | Vibration signal detection and acquisition integrated sensor | |
| CN212137645U (en) | ADC acquisition circuit | |
| CN213398853U (en) | Motor detection circuit | |
| CN113156196A (en) | Electronic transformer-based high-frequency sampling intelligent sensing terminal and implementation method | |
| CN211149230U (en) | High-speed acquisition and processing device for blade tip clearance signals based on FPGA and ARM | |
| CN103499746A (en) | Differnet-end double-display type earth resistance tester | |
| CN208765841U (en) | A kind of vibration signal acquisition system of distributed wireless synchronous network | |
| CN101509928A (en) | Apparatus for detecting engine speed by exhaust pressure | |
| CN203705058U (en) | Temperature signal acquisition device | |
| CN109544893A (en) | A kind of low noise real-time radio data collection system suitable for civil structure monitoring | |
| CN110673517A (en) | FPGA and ARM-based high-speed blade tip clearance signal acquisition and processing device and method | |
| CN212275059U (en) | Six-dimensional vibration signal acquisition system | |
| CN216411437U (en) | Charge type sensor signal acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |