CN204884132U - System for be used for subway environmental vibration and noise jointly to test - Google Patents
System for be used for subway environmental vibration and noise jointly to test Download PDFInfo
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- CN204884132U CN204884132U CN201520609310.3U CN201520609310U CN204884132U CN 204884132 U CN204884132 U CN 204884132U CN 201520609310 U CN201520609310 U CN 201520609310U CN 204884132 U CN204884132 U CN 204884132U
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Abstract
The utility model provides a system for be used for subway environmental vibration and noise jointly to test, includes portable PC (1), basic station node (2), a set of terminal node (3), wherein terminal node includes LED display (4), external vibrational acceleration sensor (5) and noise sensor (6), vibrational acceleration sensor (5) and noise sensor (6) are connected with terminal node (3) through the BNC interface, and basic station node (2) and a set of terminal node (3) are connecting based on the wireless sensor network of zigbee communication, and the basic station node connects portable PC (1) through the data line, wherein vibrational acceleration sensor (5) and noise sensor (6) are connected with terminal node (3) through the BNC interface, and the acceleration of collection and acoustic pressure data are shaken grade and the A sound level for the weighted of using always among the environmental appraisal in terminal node (3) internal conversion, and its result shows in LED display (4) in real time.
Description
Technical field
The utility model relates to the vibration & noise environmental monitoring field of urban track traffic, is a kind of wireless device for metro environment vibration and noise joint test.
Background technology
Along with Chinese society expanding economy, the fast development of subway transportation system, while offering convenience, the problems such as the ambient vibration that its operation causes and noise also become increasingly conspicuous, certain puzzlement is brought to the daily life of periphery crowd and work, even has influence on health.Running the ambient vibration that causes and noise to city underground, to carry out on-the-spot test be the key researching and analysing this problem.
Traditional test mode mainly carries out the collection of vibration & noise data by wire transmission, this just needs to lay lengthy and jumbled data circuit, and at the complex site of similar subway tunnel, how to lay the restriction that ephemeral data circuit is subject to measuring distance and various factors.In addition, traditional proving installation mostly can only gather the data of vibration or one of them evaluation amount of noise, and the data obtained generally also need post-processed, cannot obtain vibration and noise level fast and accurately simultaneously.
Utility model content
For the monistic deficiency of legacy equipment image data and raising Data Management Analysis efficiency, the purpose of this utility model is, provides a kind of wireless device for metro environment vibration and noise joint test.Can gather and process vibration in real time and noise data, avoid and lay lengthy and jumbled data line and loaded down with trivial details data post process, quick obtaining ambient vibration and noise level, substantially increase the efficiency of test simultaneously.The utility model can be ambient vibration and noise pollution condition survey and anti-vibration noise reducing work and provides great convenience.
For reaching above-mentioned purpose, the technical scheme that the utility model adopts is as follows: a kind of system for metro environment vibration and noise joint test, comprises portable PC (1), base-station node (2), one group of terminal node (3); Wherein terminal node comprises light-emitting diode display (4), external vibration acceleration sensor (5) and noise transducer (6); Vibration acceleration sensor (5) and noise transducer (6) are connected with terminal node (3) by bnc interface, base-station node (2) and one group of terminal node (3) are be connected based on the radio sensing network of Zigbee communication, and base-station node connects portable PC (1) by data line.
Wherein vibration acceleration sensor (5) and noise transducer (6) are connected with terminal node (3) by bnc interface, the acceleration gathered and acoustic pressure data are that weighted conventional in environmental evaluation shakes level and A sound level in terminal node (3) internal conversion, and its result is shown in light-emitting diode display (4) in real time.
Each node is synchronous by the internal clocking deadline; Each node all can connect vibration acceleration sensor and sound pressure sensor by bnc interface, gathers vibration acceleration and sound pressure level data simultaneously.
Vibration acceleration sensor need closely be fixed on the selected floor surveying district, and noise transducer then needs to hang on surveys 1.2m place on floor, district; Vibration and noise sensor is connected with node by bnc interface; Each node is equipped with vibration acceleration and noise or sound level sensor by bnc interface scene, and the acceleration of collection and acoustic pressure data are scaled weighted in environmental evaluation by the embedded dsp chip of node and shake level and sound level; All test datas and result are all wirelessly transmitted to the base station that is connected with one group of radio node and are finally stored in PC and hold.
Terminal node is provided with light-emitting diode display (4) for general 8 sections of LED numeral method devices, is connected to terminal node (3) by general-purpose interface.
Terminal node built-in signal amplifier and operational amplifier, operational amplifier exports and enters low-pass filter again; Then the simulating signal that low-pass filter exports connects adc circuit and transfers digital signal to, then connects embedded dsp chip.The vibration gathered and noisy analog signal first carry out signal amplification by the signal amplifier OP2177 operational amplifier that node is built-in; Enter low-pass filter again and carry out filtering; Then simulating signal transfers digital signal to by adc circuit, then completes the conversion process of data by embedded dsp chip.
The acceleration gathered and acoustic pressure data are that weighted conventional in environmental evaluation shakes level and A sound level in terminal node (3) internal conversion, and its result is shown in light-emitting diode display (4) in real time.After completing test, all original test data and conversion result transmit arrival base-station node (2) by wireless transmission protocol by terminal node (3), then turn portable PC (1) by USB data line.
In wireless device for metro environment vibration and noise joint test, the built-in dsp program chip of terminal node (3) and chargeable lithium cell, sustainable long data acquisition and process; Light-emitting diode display (4) is general 8 sections of LED numeral method devices, is used for Dynamic Announce data processed result; Vibration acceleration sensor (5) is piezoelectric transducer, and noise transducer (6) is capacitance type sensor.
The beneficial effects of the utility model are, compared with conventionally test: this device adopts wireless transmission method and node autogamy power supply unit, avoids on-the-spot bracing wire, installation work; Can the vibration acceleration (m/s of Real-time Obtaining subway surrounding enviroment
2) and the situation of change of acoustic pressure (Pa) two evaluation amount, and can directly be converted to weighted conventional in environmental evaluation at intra-node and to shake level (dB) and A sound level (dB), avoid numerous and diverse late time data processing procedure.This device can provide convenient for the vibration and noise Survey of contamination status of sea products of subway neighboring area and anti-vibration noise reducing work.The utility model is easy for installation, movement is flexible, can carry out Real-time Collection and process to metro environment vibration & noise data simultaneously.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Fig. 2 is device workflow schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is elaborated.
In conjunction with Fig. 1-2, a kind of wireless device for metro environment vibration and noise joint test.Vibration acceleration sensor (5) and noise transducer (6) is connect primarily of portable PC (1), base-station node (2), terminal node (3), light-emitting diode display (4), terminal node, wherein vibration acceleration sensor (5) and noise transducer (6) are connected with terminal node (3) by bnc interface, the acceleration gathered and acoustic pressure data are that weighted conventional in environmental evaluation shakes level and A sound level in terminal node (3) internal conversion, and its result is shown in light-emitting diode display (4) in real time.After completing test, all original test data and conversion result transmit arrival base-station node (2) by wireless transmission protocol by terminal node (3), then by USB data line unloading in portable PC (1); The built-in dsp program chip of above-mentioned terminal node (3) and chargeable lithium cell; Above-mentioned light-emitting diode display (4) is general 8 sections of LED numeral method devices, is connected to terminal node (3) by general-purpose interface; Above-mentioned vibration acceleration sensor (5) and noise transducer (6) are piezoelectric transducer.
The vibration acceleration that vibration acceleration sensor (5) and noise transducer (6) gather and acoustic pressure data are transferred to terminal node (3), to be converted in environmental evaluation conventional weighted therein to shake level and A sound level, its result is shown in light-emitting diode display (4) in real time.
After completing test, all original test data and conversion result transmit arrival base-station node (2) by wireless transmission protocol by terminal node (3), then by USB data line unloading in portable PC (1).
In this example, terminal node (3) and base-station node (2) the longest communication distance can reach 500m, meet the actual measurement work under general metro environment; Terminal node (3) configuration TMS320F28335 type dsp chip, and write data processor; Light-emitting diode display (4) is general 88 sections LED numeral method devices, and front four display weighteds shake a grade result, rear four display A sound level results, and resolution is 0.1dB; The output accuracy of vibration acceleration sensor (5) is 5 × 10
-4m/s2, the output accuracy of noise transducer (6) is 10
-3pa, meets the demand of metro environment test and appraisal.
Composition graphs 1, visible the utility model can realize the conversion of environmental evaluation index efficiently, avoids numerous and diverse late time data processing procedure.Utilize test data and result, and with reference to relevant vibration and noise regulation law standard, Fast Evaluation can be carried out to this metro environment, and can be later stage anti-vibration noise reducing work guidance is provided.
Claims (5)
1., for a system for metro environment vibration and noise joint test, it is characterized in that comprising portable PC (1), base-station node (2), one group of terminal node (3); Wherein terminal node comprises light-emitting diode display (4), external vibration acceleration sensor (5) and noise transducer (6); Vibration acceleration sensor (5) and noise transducer (6) are connected with terminal node (3) by bnc interface, base-station node (2) and one group of terminal node (3) are be connected based on the radio sensing network of Zigbee communication, and base-station node connects portable PC (1) by data line.
2. the system of vibration and noise joint test according to claim 1, it is characterized in that vibration acceleration sensor closely need be fixed on subway periphery and select on the floor in survey district, noise transducer then needs to hang on surveys 1.2m place on floor, district.
3. the system of vibration and noise joint test according to claim 1, is characterized in that terminal node built-in signal amplifier and operational amplifier, and operational amplifier exports and enters low-pass filter again; Then the simulating signal that low-pass filter exports connects adc circuit and transfers digital signal to, then connects embedded dsp chip.
4. the system of vibration and noise joint test according to claim 1, is characterized in that terminal node is provided with light-emitting diode display (4) for general 8 sections of LED numeral method devices, is connected to terminal node (3) by general-purpose interface.
5. the system of vibration and noise joint test according to claim 1, its eigen vibration acceleration transducer (5) is piezoelectric transducer, and noise transducer (6) is capacitance type sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609310.3U CN204884132U (en) | 2015-08-13 | 2015-08-13 | System for be used for subway environmental vibration and noise jointly to test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609310.3U CN204884132U (en) | 2015-08-13 | 2015-08-13 | System for be used for subway environmental vibration and noise jointly to test |
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| Publication Number | Publication Date |
|---|---|
| CN204884132U true CN204884132U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520609310.3U Active CN204884132U (en) | 2015-08-13 | 2015-08-13 | System for be used for subway environmental vibration and noise jointly to test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323758A (en) * | 2018-11-19 | 2019-02-12 | 国网四川省电力公司电力科学研究院 | It can self-alignment substation's factory outside noise continuous monitor system |
| CN110031084A (en) * | 2019-04-08 | 2019-07-19 | 上海工程技术大学 | A kind of vibration and noise on-Line Monitor Device and method for subway |
-
2015
- 2015-08-13 CN CN201520609310.3U patent/CN204884132U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323758A (en) * | 2018-11-19 | 2019-02-12 | 国网四川省电力公司电力科学研究院 | It can self-alignment substation's factory outside noise continuous monitor system |
| CN109323758B (en) * | 2018-11-19 | 2021-10-22 | 国网四川省电力公司电力科学研究院 | Self-calibrated substation boundary noise continuous monitoring system |
| CN110031084A (en) * | 2019-04-08 | 2019-07-19 | 上海工程技术大学 | A kind of vibration and noise on-Line Monitor Device and method for subway |
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