CN106600924A - Wireless multichannel vibration wire acquisition instrument and acquisition method thereof - Google Patents

Wireless multichannel vibration wire acquisition instrument and acquisition method thereof Download PDF

Info

Publication number
CN106600924A
CN106600924A CN201610712348.2A CN201610712348A CN106600924A CN 106600924 A CN106600924 A CN 106600924A CN 201610712348 A CN201610712348 A CN 201610712348A CN 106600924 A CN106600924 A CN 106600924A
Authority
CN
China
Prior art keywords
circuit
chip microcomputer
signal
vibrating wire
scm
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.)
Pending
Application number
CN201610712348.2A
Other languages
Chinese (zh)
Inventor
李松
王辅宋
刘付鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Fashion Technology Co Ltd
Original Assignee
Jiangxi Fashion Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi Fashion Technology Co Ltd filed Critical Jiangxi Fashion Technology Co Ltd
Priority to CN201610712348.2A priority Critical patent/CN106600924A/en
Publication of CN106600924A publication Critical patent/CN106600924A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention relates to a wireless multichannel vibration wire acquisition instrument and an acquisition method thereof, and is applied to structure safety health monitoring industry. The instrument comprises a channel chip selection plate, a signal conditioning circuit, a signal acquisition circuit, a single-chip microcomputer system, a storage circuit, an exciting circuit, a RTC circuit, a zigbee wireless communication module and a vibration wire sensor. The method solves the on-site deployment problems of the multichannel vibration wire acquisition instrument and the vibration wire sensor in structure safety monitoring industry, wireless mode is used, on-site wiring is reduced, some on-site complex construction environments are solved, and construction cost is reduced.

Description

A kind of wireless multi-channel vibrating wire acquirer and its acquisition method
Technical field
The present invention relates to a kind of wireless multi-channel vibrating wire acquirer and its acquisition method, are applied to the monitoring of structure safety and Health Industry.
Background technology
Vibrating string type sensor is the sensor of domestic and international most attention and a kind of wide variety of non-electricity measure at present.Due to shaking Chord sensor directly exports the natural frequency of vibration signal of vibratory string, therefore, affected little, zero point with strong antijamming capability, by electrical quantity Drift is little, temperature influence is little, stable and reliable for performance, vibration resistance, life-span length the features such as.Vibrating wire sensor is widely used for work In journey, the long term monitoring project of scientific research.Vibrating wire acquirer is the instrument and equipment for gathering vibrating wire sensor, is made in current engineering Multichannel vibrating wire acquirer typically adopts mains-supplied, which substantially increases field deployment difficulty, it is desirable to multichannel vibratory string Acquisition Instrument is disposed indoors or by consumer unit, and such vibrating wire sensor has to pass through long cable and accesses vibrating wire acquirer, and vibratory string is passed Sensor belongs to small-signal, and the prolongation of cable can cause the decay of signal, and might have other interference signals to introduce, Affect data acquisition.Because Multichannel vibrating wire acquirer accesses monitoring system with RS485 buses, gathered by control centre's control, Now Multichannel vibrating wire acquirer must be constantly in working condition, can just timely respond to acquisition, and this working method makes Obtain Multichannel vibrating wire acquirer power consumption excessive.
The content of the invention
For above-mentioned problem, the invention provides a kind of wireless multi-channel vibrating wire acquirer and its acquisition method, reduce The power consumption of Multichannel vibrating wire acquirer, allows the Multichannel vibrating wire acquirer dispose at an arbitrary position, solves field deployment A difficult difficult problem, improves the efficiency of field deployment.
The present invention to achieve these goals, is adopted the following technical scheme that:
A kind of wireless multi-channel vibrating wire acquirer, it selects plate, signal conditioning circuit, signal acquisition circuit, monolithic including dust piece Machine system, storage circuit, exciting circuit, RTC circuit, zigbee wireless communication modules and vibrating wire sensor;
Above-mentioned dust piece selects plate to select controller and relay group into it is 4 passages that each piece selects plate by piece;
Dust piece selects plate to be connected by CAN with Single Chip Microcomputer (SCM) system, and vibrating wire sensor selects the air plug of plate to be connected with dust piece.
Exciting circuit is made up of high-pressure modular, and high-pressure modular is connected with Single Chip Microcomputer (SCM) system;
Single Chip Microcomputer (SCM) system is connected with storage circuit by I/O port pin;
Zigbee wireless communication modules are connected with Single Chip Microcomputer (SCM) system;
RTC circuit is connected with Single Chip Microcomputer (SCM) system;
Signal conditioning circuit is connected with signal acquisition circuit, and signal acquisition circuit is connected with Single Chip Microcomputer (SCM) system.
A kind of acquisition method of wireless multi-channel vibratory string:
Dust piece selects plate to select controller and relay group into it is 4 passages that each piece selects plate, and Multichannel vibrating wire acquirer can by piece Plate is selected to connect multiple 4 dust pieces, the Multichannel vibrating wire acquirer with 4 as multiple is constituted, dust piece selects plate and Single Chip Microcomputer (SCM) system Connected by CAN, it is ensured that communication reliability, vibrating wire sensor selects the air plug of plate to be connected with dust piece;
Exciting circuit is made up of high-pressure modular, and, by Single-chip Controlling, output voltage, single-chip microcomputer is by I/O pin control for high-pressure modular High-pressure modular sends, and during collection, Single-chip Controlling voltage output encourages vibrating wire sensor;Single-chip microcomputer can select two kinds of differences Energisation mode, respectively resonance excitation and multi-pulse excitation;
Signal conditioning circuit is made up of filter circuit and amplifying circuit, and during sensor acquisition, vibrating wire sensor signal is very faint, After filtering after circuit and amplifying circuit, situ part interference signal is filtered first, then amplifies vibrating wire sensor signal, The signal for making collection meets the input requirements of signal acquisition circuit;Signal acquisition circuit adopts 16 independent ADC, and sensor is defeated Enter signal and be changed into digital signal;
Digital Signal Processing of the Single Chip Microcomputer (SCM) system to input, the built-in TTF algorithms of single-chip microcomputer, the time domain that signal acquisition circuit is input into Signal is converted to frequency domain;After the completion of FFT is calculated, the frequency values and signal amplitude of vibrating wire sensor are drawn;Meanwhile, Single-chip Controlling Peripheral circuit, gathers vibrating wire sensor temperature, and after the completion of collection, a data acquisition is completed;
RTC circuit is made up of clock chip, the external button cell of chip, it is ensured that after Multichannel vibrating wire acquirer power down, clock letter Breath will not be lost;RTC circuit arranges alarm clock, and after alarm clock is triggered, the output pin of clock chip exports a signal to monolithic Machine, single-chip microcomputer is waken up from resting state, makes single-chip microcomputer start working, and after the completion of collection, single-chip microcomputer reenters dormancy, next time Again work is waken up by RTC circuit, so can ensure that system is operated in low-power consumption mode;
Zigbee communication module is connected with Single Chip Microcomputer (SCM) system by serial ports controller;Zigbee communication module and others zigbee Module constitutes zigbee wireless networks;After Multichannel vibrating wire acquirer collection is completed, gathered data is sent to zigbee and is led to Letter module, zigbee communication modules send data to server by zigbee network;
Storage circuit is constituted using storage chip, the built-in small files system of single-chip microcomputer, for managing data storage;Single-chip microcomputer system System is connected with storage circuit by I/O port pin;When data acquisition is completed, when data is activation is to zigbee communication modules, while will Data are stored in storage circuit, it is ensured that the reliability of data;Storage circuit can be preserved and adopted in a large number using circulation storage mode Collection data.
The present invention realizes principle:A kind of wireless multi-channel vibrating wire acquirer, mainly by Single Chip Microcomputer (SCM) system, exciting circuit, letter Number modulate circuit, signal acquisition circuit, storage circuit, power circuit, telecommunication circuit, RTC circuit, dust piece select plate to constitute.Swash Encourage circuit and adopt high-pressure modular, by transistor controls break-make so as to can be before collection vibrating wire sensor to cell winding Excitation.Signal conditioning circuit includes filter circuit and amplifying circuit, and filter circuit can make the signal of 300Hz to 5000Hz normal Pass through.The effect of amplifying circuit is that faint vibrating wire sensor signal is amplified to into the signal that signal acquisition circuit can be recognized. Storage circuit can be stored data in locally, it is to avoid loss of data, it is ensured that the seriality of data.Power supply is supplied using accumulator Electricity, internal electric source control circuit provides working power for modules, meanwhile, Multichannel vibrating wire acquirer is externally connected to the sun Energy charging panel, in the case where there is illumination condition, can charge for accumulator, and charging current is by charge management circuit control.So can be with Multichannel vibrating wire acquirer is set to work in the wild for a long time, without the need for field personnel's management.RTC circuit provides standard for whole system The true time, while alarm clock function can also be exported, with timing wake-up STM32 single-chip microcomputer single-chip microcomputer can be made to call out from low power consumpting state Wake up, carry out data acquisition, after the completion of collection, whole system is again introduced into low power consumpting state, to reduce system power dissipation.Telecommunication circuit By zigbee module compositions, zigbee modules can constitute zigbee network with zigbee coordinators, and Multichannel vibrating wire acquirer can Data are uploaded onto the server by zigbee network.It is passage expander that piece selects plate, can be according to spot sensor quantity, spirit Accommodation number of channels living, meets field deployment situation.During field deployment Multichannel vibrating wire acquirer, balanced each vibratory string can be considered Sensor after selecting optimal location, fixes deployment to the cable length of vibrating wire acquirer.
Beneficial effects of the present invention:
The present invention solves the problems, such as structural safety monitoring industry Multichannel vibrating wire acquirer and vibrating wire sensor field deployment, passes through Wirelessly, field wiring is reduced, the complicated construction environment in some scenes can be solved, reduce construction cost.
Description of the drawings
Fig. 1 is the structural schematic block diagram of the present invention.
Specific embodiment
Describe the present invention below in conjunction with the accompanying drawings:
A kind of wireless multi-channel vibrating wire acquirer, it selects plate 1, signal conditioning circuit 2, signal acquisition circuit 3, list including dust piece Piece machine system 4, storage circuit 5, exciting circuit 6, RTC circuit 7, zigbee wireless communication modules 8 and vibrating wire sensor 9;
Above-mentioned dust piece selects plate 1 to select controller and relay group into it is 4 passages that each piece selects plate by piece;
Dust piece selects plate 1 to be connected by CAN with Single Chip Microcomputer (SCM) system 4, and vibrating wire sensor 9 selects the air plug of plate 1 to connect with dust piece Connect.
Exciting circuit 6 is made up of high-pressure modular, and high-pressure modular is connected with Single Chip Microcomputer (SCM) system 4;
Single Chip Microcomputer (SCM) system 4 is connected with storage circuit 5 by I/O port pin;
Zigbee wireless communication modules 8 are connected with Single Chip Microcomputer (SCM) system 4;
RTC circuit 7 is connected with Single Chip Microcomputer (SCM) system 4;
Signal conditioning circuit 2 is connected with signal acquisition circuit 3, and signal acquisition circuit 3 is connected with Single Chip Microcomputer (SCM) system 4.
A kind of acquisition method of wireless multi-channel vibratory string:
Dust piece selects plate 1 to select controller and relay group into each piece selects plate for 4 passages, Multichannel vibrating wire acquirer by piece Multiple 4 dust pieces can be connected and select plate, constitute the Multichannel vibrating wire acquirer with 4 as multiple, dust piece selects plate 1 and single-chip microcomputer system System 4 is connected by CAN, it is ensured that communication reliability, vibrating wire sensor 9 selects the air plug of plate 1 to be connected with dust piece;
Exciting circuit 6 is made up of high-pressure modular, and high-pressure modular passes through I/O pin control by Single-chip Controlling, output voltage, single-chip microcomputer High-pressure modular processed sends, and during collection, Single-chip Controlling voltage output encourages vibrating wire sensor;Single-chip microcomputer can select two kinds not Same energisation mode, respectively resonance excitation and multi-pulse excitation;
Signal conditioning circuit 2 is made up of filter circuit and amplifying circuit, and during sensor acquisition, vibrating wire sensor signal is very micro- It is weak, after filtering after circuit and amplifying circuit, situ part interference signal is filtered first, then vibrating wire sensor signal is put Greatly, the signal for making collection meets the input requirements of signal acquisition circuit 3;Signal acquisition circuit 3 adopts 16 independent ADC, will pass Sensor input signal is changed into digital signal;
The Digital Signal Processing of the input of Single Chip Microcomputer (SCM) system 4 pairs, the built-in TTF algorithms of single-chip microcomputer, by signal acquisition circuit 3 be input into when Domain signal is converted to frequency domain;After the completion of FFT is calculated, the frequency values and signal amplitude of vibrating wire sensor are drawn;Meanwhile, single-chip microcomputer 4 Control peripheral circuit, gathers vibrating wire sensor temperature, and after the completion of collection, a data acquisition is completed;
RTC circuit 7 is made up of clock chip, the external button cell of chip, it is ensured that after Multichannel vibrating wire acquirer power down, clock letter Breath will not be lost;RTC circuit 7 arranges alarm clock, and after alarm clock is triggered, the output pin of clock chip exports a signal to monolithic Machine, single-chip microcomputer is waken up from resting state, makes single-chip microcomputer start working, and after the completion of collection, single-chip microcomputer reenters dormancy, next time Again work is waken up by RTC circuit, so can ensure that system is operated in low-power consumption mode;
Zigbee communication module 8 is connected with Single Chip Microcomputer (SCM) system 4 by serial ports controller;Zigbee communication module 8 and others Zigbee modules constitute zigbee wireless networks;Multichannel vibrating wire acquirer collection complete after, by gathered data send to Zigbee communication modules 8, zigbee communication modules 8 send data to server by zigbee network;
Storage circuit 5 is constituted using storage chip, the built-in small files system of single-chip microcomputer, for managing data storage;Single-chip microcomputer System 4 is connected with storage circuit 5 by I/O port pin;When data acquisition is completed, when data is activation is to zigbee communication modules 8, Save the data in storage circuit 5 simultaneously, it is ensured that the reliability of data;Storage circuit 5 is using circulation storage mode, Ke Yibao Deposit a large amount of gathered datas.

Claims (2)

1. a kind of wireless multi-channel vibrating wire acquirer, it is characterised in that:It selects plate including dust piece(1), signal conditioning circuit (2), signal acquisition circuit(3), Single Chip Microcomputer (SCM) system(4), storage circuit(5), exciting circuit(6), RTC circuit(7), zigbee without Line communication module(8)With vibrating wire sensor(9);
Above-mentioned dust piece selects plate(1)Controller and relay group are selected into it is 4 passages that each piece selects plate by piece;
Dust piece selects plate(1)With Single Chip Microcomputer (SCM) system(4)Connected by CAN, vibrating wire sensor(9)Plate is selected with dust piece(1) Air plug connection;
Exciting circuit(6)It is made up of high-pressure modular, high-pressure modular and Single Chip Microcomputer (SCM) system(4)Connection;
Single Chip Microcomputer (SCM) system(4)With storage circuit(5)Connected by I/O port pin;
Zigbee wireless communication modules(8)With Single Chip Microcomputer (SCM) system(4)Connection;
RTC circuit(7)With Single Chip Microcomputer (SCM) system(4)Connection;
Signal conditioning circuit(2)With signal acquisition circuit(3)Connection, signal acquisition circuit(3)With Single Chip Microcomputer (SCM) system(4)Connection.
2. a kind of acquisition method of wireless multi-channel vibratory string, the method is characterized in that:
Dust piece selects plate(1)Controller and relay group are selected into each piece selects plate for 4 passages, the collection of multichannel vibratory string by piece Instrument can connect multiple 4 dust pieces and select plate, constitute the Multichannel vibrating wire acquirer with 4 as multiple, and dust piece selects plate(1)With monolithic Machine system(4)Connected by CAN, it is ensured that communication reliability, vibrating wire sensor(9)Plate is selected with dust piece(1)Air plug connect Connect;
Exciting circuit(6)It is made up of high-pressure modular, high-pressure modular passes through I/O pin by Single-chip Controlling, output voltage, single-chip microcomputer Control high-pressure modular sends, and during collection, Single-chip Controlling voltage output encourages vibrating wire sensor;Single-chip microcomputer can select two kinds Different energisation modes, respectively resonance excitation and multi-pulse excitation;
Signal conditioning circuit(2)It is made up of filter circuit and amplifying circuit, during sensor acquisition, vibrating wire sensor signal is very micro- It is weak, after filtering after circuit and amplifying circuit, situ part interference signal is filtered first, then vibrating wire sensor signal is put Greatly, the signal for making collection meets signal acquisition circuit(3)Input requirements;Signal acquisition circuit(3)Using 16 independent ADC, Sensor input signal is changed into into digital signal;
Single Chip Microcomputer (SCM) system(4)To the Digital Signal Processing being input into, the built-in TTF algorithms of single-chip microcomputer, by signal acquisition circuit(3)Input Time-domain signal be converted to frequency domain;After the completion of FFT is calculated, the frequency values and signal amplitude of vibrating wire sensor are drawn;Meanwhile, monolithic Machine(4)Control peripheral circuit, gathers vibrating wire sensor temperature, and after the completion of collection, a data acquisition is completed;
RTC circuit(7)It is made up of clock chip, the external button cell of chip, it is ensured that after Multichannel vibrating wire acquirer power down, clock Information will not lose;RTC circuit(7)Alarm clock is set, and after alarm clock is triggered, the output pin of clock chip exports a signal and arrives Single-chip microcomputer, single-chip microcomputer is waken up from resting state, makes single-chip microcomputer start working, and after the completion of collection, single-chip microcomputer reenters dormancy, Next time wakes up work by RTC circuit again, so can ensure that system is operated in low-power consumption mode;
Zigbee communication module(8)With Single Chip Microcomputer (SCM) system(4)Connected by serial ports controller;Zigbee communication module(8)With it His zigbee modules composition zigbee wireless networks;After Multichannel vibrating wire acquirer collection is completed, gathered data is sent To zigbee communication modules(8), zigbee communication modules(8)Server is sent data to by zigbee network;
Storage circuit(5)Constituted using storage chip, the built-in small files system of single-chip microcomputer, for managing data storage;Monolithic Machine system(4)With storage circuit(5)Connected by I/O port pin;When data acquisition is completed, data is activation is to zigbee communication moulds Block(8)When, while saving the data in storage circuit(5)In, it is ensured that the reliability of data;Storage circuit(5)Deposited using circulation Storage mode, can preserve a large amount of gathered datas.
CN201610712348.2A 2016-08-24 2016-08-24 Wireless multichannel vibration wire acquisition instrument and acquisition method thereof Pending CN106600924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610712348.2A CN106600924A (en) 2016-08-24 2016-08-24 Wireless multichannel vibration wire acquisition instrument and acquisition method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610712348.2A CN106600924A (en) 2016-08-24 2016-08-24 Wireless multichannel vibration wire acquisition instrument and acquisition method thereof

Publications (1)

Publication Number Publication Date
CN106600924A true CN106600924A (en) 2017-04-26

Family

ID=58556014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610712348.2A Pending CN106600924A (en) 2016-08-24 2016-08-24 Wireless multichannel vibration wire acquisition instrument and acquisition method thereof

Country Status (1)

Country Link
CN (1) CN106600924A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107817046A (en) * 2017-07-05 2018-03-20 广东省地质建设工程勘察院 Portable long-range instrument of gathering of vibrating wire
CN110926520A (en) * 2019-11-08 2020-03-27 中国水利水电科学研究院 Automatic data acquisition system of low-insulation vibrating wire sensor
CN115900927A (en) * 2023-02-15 2023-04-04 江西飞尚科技有限公司 Frequency division type vibrating wire sensor and frequency measuring device and method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832752A (en) * 2010-03-17 2010-09-15 浙江大学 Low-power consumption vibration wire-type strain acquisition system adopting wireless sensor network technology
CN102426070A (en) * 2011-12-31 2012-04-25 交通运输部公路科学研究所 Device and method for testing along-path stress distribution state of prestressed steel beam
CN103685005A (en) * 2013-12-27 2014-03-26 广西瀚特信息产业股份有限公司 Intelligent gateway and method
CN104091430A (en) * 2014-06-26 2014-10-08 华南理工大学 Wireless communication technology-based bridge strain monitoring system and method
CN104868546A (en) * 2015-05-25 2015-08-26 沈阳中科一唯电子技术有限公司 Cell management system
CN205102960U (en) * 2015-11-06 2016-03-23 江西飞尚科技有限公司 Binary channels synchronous sampling's sucker rod load monitor
CN105628185A (en) * 2015-12-28 2016-06-01 江西飞尚科技有限公司 Vibration wire sensor triple-frequency shielding method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101832752A (en) * 2010-03-17 2010-09-15 浙江大学 Low-power consumption vibration wire-type strain acquisition system adopting wireless sensor network technology
CN102426070A (en) * 2011-12-31 2012-04-25 交通运输部公路科学研究所 Device and method for testing along-path stress distribution state of prestressed steel beam
CN103685005A (en) * 2013-12-27 2014-03-26 广西瀚特信息产业股份有限公司 Intelligent gateway and method
CN104091430A (en) * 2014-06-26 2014-10-08 华南理工大学 Wireless communication technology-based bridge strain monitoring system and method
CN104868546A (en) * 2015-05-25 2015-08-26 沈阳中科一唯电子技术有限公司 Cell management system
CN205102960U (en) * 2015-11-06 2016-03-23 江西飞尚科技有限公司 Binary channels synchronous sampling's sucker rod load monitor
CN105628185A (en) * 2015-12-28 2016-06-01 江西飞尚科技有限公司 Vibration wire sensor triple-frequency shielding method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107817046A (en) * 2017-07-05 2018-03-20 广东省地质建设工程勘察院 Portable long-range instrument of gathering of vibrating wire
CN110926520A (en) * 2019-11-08 2020-03-27 中国水利水电科学研究院 Automatic data acquisition system of low-insulation vibrating wire sensor
CN115900927A (en) * 2023-02-15 2023-04-04 江西飞尚科技有限公司 Frequency division type vibrating wire sensor and frequency measuring device and method thereof

Similar Documents

Publication Publication Date Title
CN101883455B (en) Lighting power-saving measurement and control system based on wireless sensor network
CN102116847B (en) Single battery performance parameter acquisition system for battery pack
CN103108412A (en) Remote monitoring system on parameters of aquafarm water quality and control method
CN201402520Y (en) Bridge strain collecting instrument based on wireless sensing network interface
CN206641849U (en) A kind of U-shaped pillow of new mood regulation
CN101561245A (en) Bridge strain detection sensor based on wireless sensing network interface
CN106600924A (en) Wireless multichannel vibration wire acquisition instrument and acquisition method thereof
CN103617720B (en) One possesses multi-channel control multifunctional meter counter device
CN101908377A (en) Modular data logger based on Zigbee wireless communication and operating method thereof
CN109597340A (en) A kind of portable low power-consumption data collection and transfering system
CN202025032U (en) Electronic mutual inductor with on-line state monitoring
CN206057997U (en) Wireless remote humiture collection device with light switch function and temperature control system
CN206470754U (en) A kind of Multichannel vibrating wire acquirer based on lora
CN206007219U (en) A kind of low-power consumption human body physiological parameter remote supervision system
CN206388038U (en) A kind of synchronous inspection and control system of dyeing machine
CN206224778U (en) A kind of wireless multi-channel vibrating wire acquirer
CN106773967A (en) A kind of vibrating wire acquirer with vibrating wire sensor diagnosis
CN206450319U (en) A kind of Multichannel vibrating wire acquirer with OLED
CN203276551U (en) Intelligent meter box system
CN203069733U (en) A vibration-detection-based partial discharging point positioning device used for GIS tests
CN202904325U (en) Electric energy consumption data remote-monitoring matching device
CN202975732U (en) Remote interaction real-time household energy intelligent management system
CN208421596U (en) A kind of low-power consumption sound collection equipment automatically waken up with suspend mode
CN106302053A (en) A kind of intelligent homehousehold data acquisition system based on Internet of Things
CN208487001U (en) A kind of water cooling intelligence pump control system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170426