CN209559329U - Vibration measuring instrument automatic gauge verification system - Google Patents
Vibration measuring instrument automatic gauge verification system Download PDFInfo
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- CN209559329U CN209559329U CN201920330944.3U CN201920330944U CN209559329U CN 209559329 U CN209559329 U CN 209559329U CN 201920330944 U CN201920330944 U CN 201920330944U CN 209559329 U CN209559329 U CN 209559329U
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Abstract
The utility model relates to vibration measuring instrument automatic gauge verification systems, including standard vibration source generating system, measurement result identifying system, computer program-control system；Standard source generating system includes: ZigBee Transmit-Receive Unit, ARM system, programme-controlled signal source, motor control unit and shake table；Measurement result identifying system includes: tested instrument display screen, camera, electric image signal interface unit, ARM system, detection circuit, AC interface, DC interface and ZigBee Transmit-Receive Unit；Computer program-control system includes: ZigBee Transmit-Receive Unit, ARM system and computer host computer.The beneficial effects of the utility model are: devising standard vibration source generating system in conjunction with vibration level self-calibration technique, programme-controlled signal source design and Radio Transmission Technology, the hardware platform of innovation is provided for the realization of vibration measuring instrument automatic gauge verification system.
Description
Technical field
The utility model relates to automatic gauge verification system more particularly to vibration measuring instrument automatic gauge calibrating systems
System.
Background technique
Vibration measuring instrument includes analysis of vibration signal and vibration level size measuring instrument, these instruments are much for ring
The fields such as border protection, belong to national measurement calibration equipment, according to national verification standard, analyze for vibration measurement, such as vibrate
The 1/3oct of sound level is analyzed, and national regulations need to carry out the multiple spot centre frequency of analysis instrument the test of bandwidth performance, is needed
The amplitude and frequency of artificial constantly setting measuring signal, while the index after test is subjected to artificial contrast, workload is very
Greatly.For vibration level (including vertical (W.B.z) the weighted vibration level of whole body, whole body level (W.B.x-y) weighted vibration level, and not weighted
(Lin) measure) measurement of size, it is provided according to the detection of ISO8041 or GB/10071, needs to test a variety of sonometers
The linearity and decibel sizes values of power and time weighted carry out artificial calibrating and index comparison, and workload is also very big.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of structurally reasonable, vibrations of high degree of automation
Measurement and analysis instrument measurement verification system.To achieve the above object, the utility model uses following technical scheme:
Vibration measuring instrument automatic gauge verification system, including standard vibration source generating system, measurement result identifying system,
Computer program-control system；
Standard source generating system include: ZigBee Transmit-Receive Unit, ARM system, programme-controlled signal source, motor control unit and
Shake table；ARM system receives the standard electric signal for the requirement output that computer program-control system is sent by Zigbee Transmit-Receive Unit
Signal waveform, frequency and amplitude or standard vibration level size, all the way pass through circuit system carry out program control signal output, another way
The frequency of shake table is hit by control motor control unit output and amplitude realizes the output of vibration level, while passing through ARM system
To the signal frequency and height analysis of vibration level signal, the requirement for whether reaching standard vibration level seen, if be not achieved, adjusts ARM system
The control to motor control unit output frequency and associated motor of uniting exports, and realizes motor control unit guidance striker to vibration
The shock dynamics and frequency of platform, until the output of standard vibration level；The self-calibration process of realization standard vibration level；Programme-controlled signal source passes through
ARM system controls AD9850 and exports corresponding signal waveform, amplitude and frequency by direct digital frequency synthesis technology.When output is marked
When the vibration level signal or electric signal of standard, the ready order of signal is sent by ZigBee Transmit-Receive Unit and identifies system to measurement result
System；
Measurement result identifying system includes: tested instrument display screen, camera, electric image signal interface unit, ARM system
System, detection circuit, AC interface, DC interface and ZigBee Transmit-Receive Unit；ARM system receives standard by ZigBee Transmit-Receive Unit
The ready order that vibration level generating system is sent, ARM system realize camera to tested by image telecommunication interface unit
The measurement result of instrument display screen carries out image recognition, is surveyed by AC interface, DC interface of the detection circuit to tested instrument
Amount；ARM system gets and sends the measurements to computer program-control system by ZigBee Transmit-Receive Unit after measurement result；
Computer program-control system includes: ZigBee Transmit-Receive Unit, ARM system and computer host computer；ARM system passes through
The measurement result that ZigBee Transmit-Receive Unit obtains measurement result identifying system passes through USB interface again and data is sent to programmed calculations
Measurement result is sent in the output entry of preset probation redport by the host computer procedure of machine, host computer procedure, then, is passed through
Waveform, amplitude and the frequency that USB interface sends the signal source output requirement required in next vertification regulation are known to measurement result
Other system, measurement result identifying system pass through ZigBee Transmit-Receive Unit again and send the generation of standard vibration source for signal source output requirement
System.
The beneficial effects of the utility model are: in conjunction with vibration level self-calibration technique, programme-controlled signal source design and wireless transmission
Technology design standard vibration source generating system, for the realization of vibration measuring instrument automatic gauge verification system provides innovation
Hardware platform.
Detailed description of the invention
Fig. 1 is the system block diagram of standard vibration source generating system；
Fig. 2 is measurement result identifying system；
Fig. 3 is computer program-control system block diagram；
Fig. 4 is vibration measuring instrument automatic gauge verification system functional block diagram；
Fig. 5 is ARM system design general frame figure；
Fig. 6 is ARM unit circuit diagram；
Fig. 7 is DSP unit circuit diagram；
Fig. 8 is HPI bus connection figure；
Fig. 9 is A/D Acquisition Circuit figure；
Figure 10 is that ARM extends out SDRAM；
Figure 11 is that ARM extends out FLASH；
Figure 12 is that DSP extends out FLASH and SDRAM；
Figure 13 is usb circuit figure of the present invention；
Figure 14 is RS232 interface circuit diagram；
Figure 15 is RJ45 interface circuit figure；
Figure 16 is power system circuit figure；
Figure 17 is programme-controlled signal source circuit diagram；
Figure 18 is motor control unit figure；
Figure 19 is image recognition principle block diagram.
Specific embodiment
The utility model is described further below with reference to embodiment.The explanation of following embodiments is only intended to help to manage
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model
In scope of protection of the claims.
The system includes three part compositions, including standard vibration source generating system, measurement result identifying system, computer journey
Control system.Its system design principle block diagram is as shown in Figure 4.Implementation steps are as follows:
Computer program-control system requires to receive and dispatch by ZigBee according to each in the vertification regulation for being detected instrument first
Waveform, frequency and the amplitude or standard vibration level size that unit sends corresponding measuring signal are to standard vibration source generating system, standard
Vibration source generating system is believed standard vibration level according to requiring to generate corresponding standard vibration level signal or electric signal to tested instrument
Number or the instruction that has sent of electric signal measurement result identifying system, measurement result identification system be sent to by ZigBee Transmit-Receive Unit
After system receives the instruction, starting ARM system measures the identification of result, detects phase according to image recognition technology and circuit
In conjunction with method, obtain correct measurement result, the result be then sent to computer program-control by ZigBee Transmit-Receive Unit
System, computer program-control system obtain after related calibrating entry results through the host computer procedure write-in corresponding result of calibration certificate
Column.Then start waveform, frequency and the amplitude of the measuring signal of next vertification regulation requirement to standard vibration source generating system.It is logical
Cross constantly circulation, finally realize the calibrating project of all vertification regulation requirements, simultaneous computer stored program controlled according to these as a result,
The calibration certificate for forming specification comes from printer output.The automatic gauge inspection of vibration measurement analysis instrument can thus be completed
It is fixed.
ARM system in above system designs general frame using following system, as shown in Figure 5.The general frame was both
ARM can be given full play to, the real-time control of system and good man-machine interface are realized and played DSP and image and audio are believed
Number analysis processing capacity.
Wherein ARM is using S3C2410A as central control module.S3C2410A is the very high ARM of a cost performance
core SOC.Dominant frequency with 203MHz has the processing speed requirement needed to audio signal digit detection, there is USB interface,
It can be communicated with computer, there is multiple serial ports, the control to ZigBee Transmit-Receive Unit may be implemented.Physical circuit figure is as schemed
Shown in 6:
Wherein DSP is designed using TMS320VC5502 chip, which is a high-performance, low-power consumption, fixed-point number
Word signal processor fully meets audio signal and image signal process ability.Its physical circuit figure is as shown in Figure 7.
The connection of ARM unit and DSP unit uses HPI bus, and connection type is as shown in Figure 8.
The acquisition of vibration level signal is realized using high-speed a/d, select TMS320AIC23B, which uses advanced Σ mono-
△ oversampling technique can provide the hits of 16bit, 20bit, 24bit and 32bit under the sample rate of 8kHz to 96kHz
According to.The output signal-to-noise ratio of ADC and DAC is respectively up to 90dB and 100dB.The performance meets the data acquisition energy of audio signal enough
Power.DSP to the control of A/D is realized by I2C interface.Its circuit is as shown in Figure 9.
It is used for DSP and ARM and extends out FLASH and SDRAM, increase its program capacity and Nonvolatile data result
Storage capacity.
SDRAM model K4S561632C-TC75, the capacity 4Banks*16Bit*4M that ARM is extended out, that is,
256Mbit converts into 32M byte.Memory of two pieces of K4S561632C-TC75 as ARM is used in this system, circuit theory is such as
Shown in Figure 10.
S3C2410 extends out the K9F1208U0B that NAND FLASH is one piece of Samsung company, and capacity is 64M byte, electricity
Road principle is as shown in figure 11.
TMS320VC5502 extends out FLASH and the circuit theory of SDRAM is as shown in figure 12.
ARM system realizes data exchange and includes tri- type of RJ45, RS232 and USB to the control of ZIGBEE wireless module
Type interface, usb circuit principle are as shown in figure 13.
The RS232 serial ports controller used in this system is MAX3232, and circuit theory is as shown in figure 14.
The circuit of S3C2410A and RJ45 interface is comparatively more complicated, it is necessary to use 802.3 Ethernet of IEEE
Controller is attached.We use CS8900A to this ethernet controller, this is also more commonly used one piece at present
Ethernet control chip, circuit theory are as shown in figure 15.
There are four the power supplys used in ARM system, including 5V, 3.3V, 1.8V and 1.26V.Due to 3.3V and 1.26V electricity
The order of pressure power supply requires, it is necessary to and 1.26V powers prior to 3.3V, therefore devises the circuit powered in order here,
Use the power management chip of Liang Kuai TI company, TPS75733 (3.3V) and TPS76801 (1.26V).
Program control signal source circuit uses AD9850 for the circuit design of core, and physical circuit is as shown in figure 17:
Program control signal source unit ARM system inputs frequency control word to AD9850 and phase control words realize sine wave
Frequency and phase controlling, while being controlled by AD7521 12 D/A amplitudes, 1/4096 amplitude precision control can be reached
System, can realize the technical requirements of programme-controlled signal source in standard source generating system well.
Motor control unit controls multiple LN298N units using ARM and realizes that the rotation of multiple motors controls multiple hit
For the control of the shock dynamics and velocity interpolation vibration level amplitude and speed of shake table, single LN298N element circuit figure is as schemed
Shown in 18.
The frequency of impact and width that motor drives striker are controlled by the frequency that ARM system controls the PWN wave of L298N input
Degree control, realizes the control of vibration level amplitude and speed.
ZigBee Transmit-Receive Unit uses CC2420 for the ZigBee Transmit-Receive Unit module of core chips.Using ZigBee networking
Technology realizes the wireless communication of three points well.Its channel from way of search, the topological structure of StarNet and entirely shake hands
(Fully handshaked) agreement ensure that the stability of data transmission.Two-way is realized using RS232 interface with ARM system
Letter.
It can be realized well in vibration measuring instrument automatic gauge verification system by the design of said units circuit
The function of three systems (standard vibration source generating system, measurement result identifying system, computer program-control system).It is for three
The circuit design of system is specifically described as follows:
Standard vibration source generating system: RS232 interface is controlled by ARM system (Fig. 5) and is realized to ZigBee transceiver module
Communication receives the specific requirement of the standard vibration level signal or standard electric signal of the requirement output that computer program-control system is sent,
On the one hand pass through ARM system control AD9850 unit (Figure 17) realization standard electric signal corresponding signal amplitude, frequency, phase
Standard electric signal interface is given in control output, on the other hand controls motor-drive circuit (Figure 18) by ARM system, realizes multiple hit
For the amplitude and frequency of shake table vibratory impulse, for the accurate control of amplitude and frequency that motor control controls multiple strikers
System, is connected on shake table by standard vibration sensor and is acquired, by the high speed of the signal input ARM system after acquisition
A/DTMS320AIC23B carries out digital detection analysis, and whether analysis vibration level reaches the requirement of standard, if do not reached, pass through
The control for changing ARM system control motor-drive circuit, realizes the Oscillation Amplitude and frequency of shake table, by constantly feeding back, most
Vibration level signal output definitely is realized eventually.The circuit system has following innovative design: (1) accurate program controlled signal source realizes
Optional frequency control, the accurate amplitude to 1/4096 in multiple waveforms, audio range control contour performance signal source and fill
The design requirement set.(2) by vibration level self calibration feedback technique, the output of standard vibration level signal is realized.(3) pass through ZigBee
Networking technology, the multiple spot for realizing standard acoustic signal generating system and computer program-control system and measurement result identifying system are logical
Letter.(4) rigorous analysis of vibration level signal is realized by digital detection technology.Digital detection includes vertical (W.B.z) weighted of whole body
The vibration level digitalization index of vibration level, the digitlization of whole body level (W.B.x-y) weighted vibration level and AC signal is analyzed.
Vertical (W.B.z) the weighted vibration level of whole body, the digitized process of whole body level (W.B.x-y) weighted vibration level are as follows:
The 1/3oct analysis for completing 1Hz to 80Hz first, carries out according to following steps:
(1) the fertile hereby bandpass filter of a 8 rank Barts is designed with the design method of analog filter；
(2) predistortion is carried out to analog frequency；
(3) transmission function of digital filtering is found out using Bilinear transformation method；
(4) inputs a sampled value, calculates an output valve, seeks the root mean square of each output valve.
The frequency band root mean square acceleration analyzed by 1/3oct is multiplied by the weighted factor, then takes r.m.s. and obtain phase
The spectrum overlapping acceleration answered:
In formula: ai--- the accelerated speed effective value (m/s2) that the i-th frequency range is surveyed in third-octave frequency spectrum；
ki--- the corresponding spectrum overlapping factor of the i-th frequency range in third-octave frequency spectrum.
It is analyzed by the calculating of above formula and 1/3oct, so that it may measure corresponding spectrum overlapping acceleration.
Weighted vibration level can be obtained as the following formula by weighted acceleration:
In formula: aw--- weighted acceleration virtual value (m/s2)；
a0--- reference acceleration, a0=10-6m/s2。
It is calculated by the digital collection of (2) formula, so that it may corresponding weighted vibration level.
Measurement result identifying system: controlling communication of the RS232 interface realization to ZigBee transceiver module by ARM system,
After receiving the ready order of signal that standard acoustic signal generating system method is come.ARM system completes following work: (1)
The AC interface that tested instrument provides is docked to high-speed a/d TMS320AIC23B acquisition interface and carries out digital detection analysis.(2) will
The built-in A/D translation interface that the DC interface that tested instrument provides is connected to ARM2410 offer carries out DC analysis.(3) by tested instrument
The measurement result display screen of device passes through I by digital camera2C bus realizes the reading of ARM system, passes through optical character identification
Technology combination AC interface and DC interface analysis are as a result, measure the identification of result.
The innovative design that the circuit system has is embodied in by passing through image recognition on the basis of AC, DC analysis combination
Also it is able to verify that tested instrument provides while the shortcomings that technology can quickly and accurately find measurement result, compensate for image recognition
AC, DC interface correctness.
Computer program-control system: controlling communication of the RS232 interface realization to ZigBee transceiver module by ARM system, real
Now the reading of the measurement result of measurement result identifying system is tied measurement by the USB interface or RJ45 interface of ARM system
Fruit is read into computer system, and measurement result is written in the detection corresponding data base entries of regulation by computer system
It goes.Then the standard signal output for starting next detection regulation requires to be sent to the generation of standard sound by ZigBee group net unit
System.Computer programming realizes above-mentioned function using VB language combination SQL database technology.The innovative major embodiment of the circuit
Realize that computer program-control system sends out standard sound by ZigBee networking technology and computer programming in computer program-control
The two-way communication of raw system and measurement result identifying system and the formation and output of calibration certificate.
Claims (1)
1. a kind of vibration measuring instrument automatic gauge verification system, it is characterised in that: including standard vibration source generating system, measurement
As a result identifying system and computer program-control system；
Standard source generating system includes: ZigBee Transmit-Receive Unit, ARM system, programme-controlled signal source, motor control unit and vibration
Platform；ARM system receives the letter of the standard electric signal for the requirement output that computer program-control system is sent by Zigbee Transmit-Receive Unit
The size of number waveform, frequency and amplitude or standard vibration level, carries out program control signal output by circuit system all the way, and another way passes through
The output that the frequency and amplitude realization vibration level of shake table are hit in motor control unit output is controlled, while by ARM system to vibration
The signal frequency and height analysis of grade signal, see the requirement for whether reaching standard vibration level, if be not achieved, adjust ARM system pair
The control of motor control unit output frequency and associated motor exports, and realizes motor control unit guidance striker to shake table
Shock dynamics and frequency, until the output of standard vibration level；The self-calibration process of realization standard vibration level；Programme-controlled signal source passes through ARM
System control AD9850 exports corresponding signal waveform, amplitude and frequency by direct digital frequency synthesis technology；Work as outputting standard
Vibration level signal or electric signal when, by ZigBee Transmit-Receive Unit send signal it is ready order give measurement result identification system
System；
Measurement result identifying system includes: tested instrument display screen, camera, electric image signal interface unit, ARM system, inspection
Slowdown monitoring circuit, AC interface, DC interface and ZigBee Transmit-Receive Unit；ARM system receives standard vibration level by Zigbee Transmit-Receive Unit
The ready order that generating system is sent, ARM system realize camera to tested instrument by image telecommunication interface unit
The measurement result of display screen carries out image recognition, is measured by AC interface, DC interface of the detection circuit to tested instrument；
ARM system gets and sends the measurements to computer program-control system by ZigBee Transmit-Receive Unit after measurement result；
Computer program-control system includes: ZigBee Transmit-Receive Unit, ARM system and computer host computer；ARM system passes through ZigBee
The measurement result that Transmit-Receive Unit obtains measurement result identifying system passes through USB interface again and data is sent to the upper of sequence controlled computer
Measurement result is sent in the output entry of preset probation redport by machine program, host computer procedure, then, is sent out by USB interface
It send waveform, amplitude and the frequency of the signal source output requirement required in next vertification regulation to measurement result identifying system, surveys
Amount result identifying system passes through ZigBee Transmit-Receive Unit again and sends standard vibration source generating system for signal source output requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330944.3U CN209559329U (en) | 2019-03-15 | 2019-03-15 | Vibration measuring instrument automatic gauge verification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330944.3U CN209559329U (en) | 2019-03-15 | 2019-03-15 | Vibration measuring instrument automatic gauge verification system |
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| Publication Number | Publication Date |
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| CN209559329U true CN209559329U (en) | 2019-10-29 |
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| CN201920330944.3U Expired - Fee Related CN209559329U (en) | 2019-03-15 | 2019-03-15 | Vibration measuring instrument automatic gauge verification system |
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2019
- 2019-03-15 CN CN201920330944.3U patent/CN209559329U/en not_active Expired - Fee Related
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Granted publication date: 20191029 Termination date: 20200315 |