CN203216603U - Portable motor vibration detector with USB interface - Google Patents

Abstract

Disclosed is a portable motor vibration detector with a USB interface. The portable motor vibration detector comprises a vibration sensing module, a signal preprocessing module, a sampling module, a digital signal processing module and a USB interface module. The portable motor vibration detector is characterized in that: the vibration sensing module, the signal preprocessing module, the sampling module, the digital signal processing module and the USB interface module are connected in proper order. After damping, amplifying, filtering, etc. are carried out by the signal preprocessing module on motor vibration signals acquired by the vibration sensing module, analog-to-digital conversion is carried out by the sampling module on the processed vibration electric signals; and, after the signals are sent to the digital signal processing module to be processed, a lot of data is rapidly transmitted to a PC by the USB interface module in order to complete a variety of data processing.

Description

The portable electric machine vibration-detecting instrument of USB interface

Technical field

The utility model relates to a kind of portable electric machine vibration-detecting instrument of motor detector, especially USB interface.

Background technology

Motor self vibration is motor modal phenomenon in service, has comprised the relevant operation characteristic of motor.Motor self vibration-testing provides " health " information of motor operation, also provides necessary foundation for the running status of analyzing motor.Detect by motor self vibration performance being carried out regularity, can rationally judge the mechanical problem that motor occurs, in time correct, and then avoid the long-time failure operation of motor, reduce the electromechanics loss, reduce the use cost of motor.Simultaneously, motor is installed in some more special places sometimes, and environment is abominable, and the space is narrow and small, is not suitable for putting a large amount of or the bigger instrument of volume detects.

Summary of the invention

In view of above reason, the utility model provides a kind of portable electric machine vibration-detecting instrument of USB interface.It provides multi-channel signal acquiring, range switching, frequency adjustable, sampling is adjustable and the data acquisition of multiple triggering mode, and can carry out high speed data transfer by USB interface.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of portable electric machine vibration-detecting instrument of USB interface, involving vibrations sensing module, signal pre-processing module, sampling module, digital signal processing module, usb interface module, it is characterized in that vibrating sensing module, signal pre-processing module, sampling module, digital signal processing module, usb interface module connect successively.The motor oscillating signal that the vibrating sensing module is gathered, through signal pre-processing module decay, amplification, filtering etc., vibration electric signal after sampling module will be handled carries out analog to digital conversion, after sending digital signal processing module to handle, by usb interface module lot of data is sent to PC rapidly at last, to finish the various processing of data.

The beneficial effects of the utility model are, make things convenient for engineering technical personnel to carry out on-the-spot test, realize analysis and the inquiry of motor oscillating data, have higher utility, economic worth.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

Embodiment

In Fig. 1, a kind of portable electric machine vibration-detecting instrument of USB interface, involving vibrations sensing module 1, signal pre-processing module 2, sampling module 3, digital signal processing module 4, usb interface module 5, it is characterized in that vibrating sensing module 1, signal pre-processing module 2, sampling module 3, digital signal processing module 4, usb interface module 5 connect successively.The motor oscillating signal that vibrating sensing module 1 is gathered, through signal pre-processing module 2 decay, amplification, filtering etc., vibration electric signal after sampling module 3 will be handled carries out analog to digital conversion, after sending digital signal processing module 4 to handle, by usb interface module 5 lot of data is sent to PC rapidly at last, to finish the various processing of data.

Vibrating sensing module 1 is converted to electric signal with the vibration signal of motor and carries out Treatment Analysis.The electric signal of vibration transducer output has recorded information such as the amplitude that vibrates, frequency, the vibration performance when reflecting the motor operation.Signal pre-processing module 2 comprises functions such as decay, amplification, filtering.When the excessive so that spill over acquisition range of signal, need carry out the requirement that equal proportion decays to satisfy signals collecting to signal.Otherwise, so that when influencing the signals collecting precision, need carry out signals collecting when signal gets too small to the amplification that signal carries out equal proportion.Generally, the spectrum distribution of motor oscillating signal is in certain frequency band range, therefore the frequency spectrum of gathering the vibration electric signal can not occupy whole frequency band, in order to reduce high-frequency signal to the interference of useful vibration signal, needs that the vibration electric signal is carried out filtering yet and handles.Electric signal through preprocessed signal needs digitizing to finish numerical analysis, so need sampling module 3 to finish analog-to-digital conversion.What sampling module 3 adopted is the AD7767 chip, it is a 24 low-power consumption, high-precision commercial Application type digital to analog converter, be connected the transmission that realizes data with the SPI interface of digital signal processing module 4, simultaneously, controlled in order to realize sampling rate, output terminal of clock with digital signal processing module 4 on the hardware circuit links to each other with the sampling clock input end of AD7767, and then realizes the variable requirement of sample frequency.The TMS320C5502 chip that digital signal processing module 4 adopts TI company utilizes the path of the GPIO realization pre-process circuit of TMS320C5502 chip to select as kernel processor chip; Use its SPI interface to be connected with sampling A, use its DMA passage to read sampled data fast.Use its HPI interface to link to each other with the control peripheral interface able to programme (GPIF) of usb interface module 5, realize the data communication with the USB chip.Usb interface module 5 adopts the Cypress CY68013A of company, the integrated peripheral interface (GPIF) of USB 2.0 transceivers, serial interface engine (SIE), enhancement mode 8051 kernels and control able to programme among the CY68013A.Its function mainly comprises: the first, with PC USB interface power end+5 V power supplys, through voltage transformation, be used for the power supply of appliance circuit; The second, data terminal D+, the D-of PC USB interface is connected with data terminal D+, the D-of USB chip, finish the data path of PC and USB chip; The 3rd, the peripheral interface (GPIF) of the control able to programme of USB is carried out the sequential configuration, finish the seamless link with the HPI interface of TMS320C5502.

Claims (1)

1. the portable electric machine vibration-detecting instrument of a USB interface, involving vibrations sensing module (1), signal pre-processing module (2), sampling module (3), digital signal processing module (4), usb interface module (5), it is characterized in that vibrating sensing module (1), signal pre-processing module (2), sampling module (3), digital signal processing module (4), usb interface module (5) connect successively.

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