CN105488977A - On-site meter self-powered wireless adaptive system - Google Patents
On-site meter self-powered wireless adaptive system Download PDFInfo
- Publication number
- CN105488977A CN105488977A CN201510900584.2A CN201510900584A CN105488977A CN 105488977 A CN105488977 A CN 105488977A CN 201510900584 A CN201510900584 A CN 201510900584A CN 105488977 A CN105488977 A CN 105488977A
- Authority
- CN
- China
- Prior art keywords
- circuit
- instrument
- module
- control mcu
- field instrument
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to an on-site meter self-powered wireless adaptive system. According to the invention, an electricity collection circuit is used for collecting electricity for storage from current signals output by a 4-20mA one-site meter, and providing a master control circuit with electricity as a power supply used for maintaining working; a master control MCU is used for controlling a signal acquisition circuit to collect signals output by the 4-20mA one-site meter, processing the acquired signals, and sending the processed signals to a Zigbee wireless transmission unit for wireless transmission; the master control MCU is used for sending sensing signals transmitted by the meter and system operating parameters to a liquid crystal display module for displaying; the master control MCU is used for realizing data interaction via a serial port output module and an upper computer; and the master control MCU is used for sending acquired signals to a local storage module for storage. No external power supply is needed; 4-20mA output by the on-site meter is used for energy storage and charging directly, power supply for the master control circuit is realized; data timing acquisition, transmission, storage, and display can be completed; a problem that external wire arrangement for power supply is needed by data transmission systems is solved; no data transmission system wire arrangement is needed; and lower power consumption is realized.
Description
Technical field
The present invention relates to a kind of signal transmission technology, particularly a kind of field instrument is asked for electric-type wireless adaptation system.
Background technology
The current signal of the signal normally 4-20mA that industry spot instrument exports, and distant between instrument and pulpit, Central Control Room can only obtain the data of instrument by wired mode, and industrial field device is more, site environment is more complicated, higher once more difficult wiring, the cost of causing of metered quantity.
Summary of the invention
The present invention be directed to wiring confusion between industry spot instrument and pulpit, the not problem of easy care, propose a kind of field instrument to ask for electric-type wireless adaptation system, the current signal utilizing instrument to export is as gathering and the energy source of transmission system circuit, and become the number of delivering letters also can not to original instrument and bring impact, a stable power supply signal is obtained by designing a kind of power-supply circuit for 4-20mA instrument, be used for powering to governor circuit, data acquisition and transmission, this addresses the problem the powerup issue of governor circuit, without the need to outside wiring power supply.
Technical scheme of the present invention is: a kind of field instrument is asked for electric-type wireless adaptation system, comprises main control MCU, 4-20mA field instrument, power-supply circuit, serial ports output module, LCD MODULE, signal acquisition module, local memory module, Zigbee wireless transport module.The current signal power taking that power-supply circuit exports from 4-20mA field instrument stores, and supply the power supply of main control MCU as maintenance work, main control MCU control signal Acquisition Circuit gathers field instrument output signal, and send Zigbee wireless transmission after being processed by collection signal, the operational factor that instrument is become sensing amount and the system sent by main control MCU send LCD MODULE to show, and carry out data interaction by serial ports output module and host computer, and local memory module is sent by collection signal to store.
Described power-supply circuit comprises direction of current control circuit, charging circuit, mu balanced circuit, filtering circuit, direction of current control circuit is a rectifier circuit, 4-20mA field instrument output current signal is parallel to charging circuit through rectifier circuit, to super capacitor charging in charging circuit, charging circuit exports and powers to main control MCU after the filtering of π shape RC filtering circuit after mu balanced circuit voltage stabilizing.
Several field instrument ask for electric-type wireless adaptation system composition data acquisition networking, carry out information transmission mutually, and instrumented data be sent to gateway by wireless network, main frame by gateway access to scene each instrument duty.
Beneficial effect of the present invention is: field instrument of the present invention is asked for electric-type wireless adaptation system, without the need to externally fed, the 4-20mA energy storage directly exported by field instrument is charged, realize power taking, then governor circuit is powered, the functions such as data timing collection, transmission, storage, display can be completed, solve the problem that data transmission system needs outside cabling to power, there is the advantages such as data transmission system clout line, low-power consumption.
Accompanying drawing explanation
Fig. 1 is that field instrument of the present invention is asked for electric-type wireless adaptation system architecture schematic diagram;
Fig. 2 is that field instrument of the present invention electric-type wireless adaptation system of asking for becomes overall network Organization Chart;
Fig. 3 is Zigbee Wireless Data Transmission process flow diagram provided by the invention.
Embodiment
Be illustrated in figure 1 field instrument to ask for electric-type wireless adaptation system architecture schematic diagram, comprise 4-20mA field instrument 10, power-supply circuit 11(sampling resistor 12, super capacitor 13, voltage regulator 14, voltage polling 15), serial ports output module 16, LCD MODULE 17, signal acquisition module 18, local memory module 19, main control MCU 20, and Zigbee wireless transmission 21.Wherein, power-supply circuit comprises direction of current control circuit, charging circuit, mu balanced circuit, filtering circuit, and these parts complete the Power supply part of main control MCU, and guarantee system can reliably be powered.The current signal power taking energy storage that power-supply circuit 11 exports from 4-20mA field instrument 10, and supply the power supply of main control MCU 20 as maintenance work.Main control MCU control signal Acquisition Circuit 18 pairs of 4-20mA field instrument output signals gather, and send Zigbee wireless transmission 21 wireless output after being processed by collection signal.
All field instruments can MANET by this system, realizes signals collecting and transmission, and system can long-time stable work and without the need to externally fed, solve Zigbee data collection and transfering system and need change battery or the problem for electrical wiring.
Fig. 2 is the overall architecture of wireless adaptation system, native system realizes the networking of industry spot various discrete instrument to get up, form a data acquisition networking, realize data acquisition and wireless transmission, and can information transmission be carried out between each instrument, all instrumented datas are sent to gateway by wireless network, and main frame can have access to the duty of each instrument of field layer by gateway.
Power-supply circuit module 11 comprises the parts such as sampling resistor 12, super capacitor 13 and voltage regulator 14, is used for charging energy-storing.A block power supply chip is first adopted to be parallel in 4-20mA circuit, by its output voltages of effect dynamic adjustments such as sampling resistor 12 and voltage regulators 14, boost to 5V by one piece of boosting DC/DC chip again to charge to super capacitor 13, and through a step-down DC/DC chip voltage to 3.3V, be used for providing a stable power supply to main control MCU.
Charging circuit comprises a voltage polling part 15, controlled by special power management chip, be used for monitoring power supply dump energy, once electric quantity of power supply is lower in power taking process, just reduce system operating frequency or allow system sleep, anti-locking system breaks down due to electricity shortage.
As shown in Figure 2, direction of current control circuit is a rectifier circuit, and it is used to convert direction of current, when field instrument 4-20mA outbound course connects inverse time, still can ensure that the electric current input direction of charging circuit is unique, play the effect of charging current input direction counnter attack.
Mu balanced circuit is made up of the parts such as stabilivolt, Correctional tube, and comprise a supply voltage detection control part, possess the function of input voltage sampling, output voltage adjustment, can automatic voltage regulation be realized, ensure that main control MCU can keep supplying the supply voltage of a high-quality.
Filtering circuit utilizes π shape RC filtering circuit, be made up of two electric capacity and a resistance, two electric capacity carry out filter action simultaneously, the latter's filter capacitor can compensate the incomplete part of former capacitance filtering, two electric capacity acting in conjunction filtering, thus greatly improve filter effect, reduce interference, reduce noise, guarantee that Power supply is stablized.
The Cortex-M0 series low-power consumption of main control MCU employing based on Atmel, the arm processor of high energy efficiency, can be used to control signal Acquisition Circuit and complete current detecting, the i.e. output signal of measuring transducer, comprise signal conditioning circuit, A/D change-over circuit, chip treatment circuit etc., the digital quantity be converted to through main control chip analyzing and processing and etc. to be transmitted.
LCD MODULE is employing one piece of super low-power consumption microampere order LCD liquid crystal display, to refresh compared with low rate the operational factor that Displaying Meter becomes sensing amount and the system sent.
What serial port module adopted is RS232 communication modes, and direct and host computer carries out data interaction, uploads image data on the one hand, accepts host computer command configuration systematic parameter on the other hand, as changed system acquisition, display frequency etc.
Local memory module adopts SD card mode, and first initialization SPI arranges low-speed mode, sends control command CMD, then judges SD card Ready state, then arrange SPI fast mode, with the write of timing mode control instrument data and alert data.
As shown in Figure 3, Zigbee transmits the flow process of packet: first determine the network address of destination node and set up the path that source node leads to destination node, when the network address of destination node is unknown, then starting to search, after the success of Network Search address, determine whether path is set up again, if do not set up, start to search the path that source node leads to destination node, search successfully, then start to transmit packet, otherwise abandon this packet, again transmit data, so circulation is carried out.
Wireless adaptation system can be docked with tunneling data instrument, data acquisition, obtains instrument key parameter, and discrete for scene instrument is carried out networking, completes data wireless transmission, realizes the wireless penetration transformation of field instrument.
Wireless adaptation system utilizes Zigbee wireless way for transmitting data, its networking flexibility, power consumption are lower, field instrument networking can be got up, form a wireless data acquisition network, so just without the need to each instrument (transmitter) is received pulpit, solve the complicated difficult problem that to connect up between scene and pulpit, as long as the heart arranges a gateway in the controlling, be responsible for the data of collecting field layer all instrument, and be transferred to upper layer host and carry out treatment and analysis.
Adopt a kind of wireless adaptation system, each field instrument connects this system just can wirelessly transmitting data, and by this adaption system, the networking of on-the-spot various discrete instrument is got up, be linked in wireless system by tunneling data instrument, just can transmission of information mutually between each instrument, not only solve a difficult problem for its wiring, and improve data transmission efficiency.Wireless adaptation system is responsible for collecting field instrument on the one hand and is become the key parameter sent, on the other hand these data are transmitted wirelessly and deliver to gateway, control center can carry out treatment and analysis to field layer Various types of data by gateway, whole field instrument just can be integrated in industry measurement and control system, effectively carries out management and control and scheduling.
Field instrument self exports the current signal of 4-20mA, this wireless adaptation system not only can become the crucial sensing data sent by acquisition instrument, and by this current signal power taking energy storage supply wireless adaptation system, without the need to being equipped with battery to adaption system, solve its powerup issue.
Claims (3)
1. a field instrument is asked for electric-type wireless adaptation system, it is characterized in that, comprise main control MCU, 4-20mA field instrument, power-supply circuit, serial ports output module, LCD MODULE, signal acquisition module, local memory module, Zigbee wireless transport module; The current signal power taking that power-supply circuit exports from 4-20mA field instrument stores, and supply the power supply of main control MCU as maintenance work, main control MCU control signal Acquisition Circuit gathers field instrument output signal, and send Zigbee wireless transmission after being processed by collection signal, the operational factor that instrument is become sensing amount and the system sent by main control MCU send LCD MODULE to show, and carry out data interaction by serial ports output module and host computer, and local memory module is sent by collection signal to store.
2. field instrument is asked for electric-type wireless adaptation system according to claim 1, it is characterized in that, described power-supply circuit comprises direction of current control circuit, charging circuit, mu balanced circuit, filtering circuit, direction of current control circuit is a rectifier circuit, 4-20mA field instrument output current signal is parallel to charging circuit through rectifier circuit, to super capacitor charging in charging circuit, charging circuit exports and powers to main control MCU after the filtering of π shape RC filtering circuit after mu balanced circuit voltage stabilizing.
3. field instrument is asked for electric-type wireless adaptation system according to claim 1, it is characterized in that, several field instrument ask for electric-type wireless adaptation system composition data acquisition networking, carry out information transmission mutually, and instrumented data is sent to gateway by wireless network, main frame is by the duty of gateway access to each instrument on-the-spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900584.2A CN105488977A (en) | 2015-12-08 | 2015-12-08 | On-site meter self-powered wireless adaptive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900584.2A CN105488977A (en) | 2015-12-08 | 2015-12-08 | On-site meter self-powered wireless adaptive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105488977A true CN105488977A (en) | 2016-04-13 |
Family
ID=55675937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510900584.2A Pending CN105488977A (en) | 2015-12-08 | 2015-12-08 | On-site meter self-powered wireless adaptive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105488977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882416A (en) * | 2021-01-13 | 2021-06-01 | 大连理工大学 | Circuit for self-adaptive power consumption reduction of current input device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110134817A1 (en) * | 2008-08-08 | 2011-06-09 | Endress + Hauser Process Solutions Ag | Universelle schnittstelle für einen wireless adapter |
| CN103619057A (en) * | 2013-12-13 | 2014-03-05 | 中国科学院沈阳自动化研究所 | 4-20mA circuit electricity taking-based low-power-consumption networking method for 802.15.4e wireless equipment |
| CN103888271A (en) * | 2012-12-19 | 2014-06-25 | 中国科学院沈阳自动化研究所 | WIA-PA wireless network adapter power supply circuit |
| CN103886730A (en) * | 2012-12-19 | 2014-06-25 | 中国科学院沈阳自动化研究所 | Communication method based on wireless Hart adapter terminal |
| CN205318594U (en) * | 2015-12-08 | 2016-06-15 | 上海工业自动化仪表研究院 | On --spot instrument wireless adapter of electric formula of asking for |
-
2015
- 2015-12-08 CN CN201510900584.2A patent/CN105488977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110134817A1 (en) * | 2008-08-08 | 2011-06-09 | Endress + Hauser Process Solutions Ag | Universelle schnittstelle für einen wireless adapter |
| CN103888271A (en) * | 2012-12-19 | 2014-06-25 | 中国科学院沈阳自动化研究所 | WIA-PA wireless network adapter power supply circuit |
| CN103886730A (en) * | 2012-12-19 | 2014-06-25 | 中国科学院沈阳自动化研究所 | Communication method based on wireless Hart adapter terminal |
| CN103619057A (en) * | 2013-12-13 | 2014-03-05 | 中国科学院沈阳自动化研究所 | 4-20mA circuit electricity taking-based low-power-consumption networking method for 802.15.4e wireless equipment |
| CN205318594U (en) * | 2015-12-08 | 2016-06-15 | 上海工业自动化仪表研究院 | On --spot instrument wireless adapter of electric formula of asking for |
Non-Patent Citations (1)
| Title |
|---|
| 张华良，黄月: "第二十一章HART仪表无线适配器设计", 《仪表标准化与计量》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882416A (en) * | 2021-01-13 | 2021-06-01 | 大连理工大学 | Circuit for self-adaptive power consumption reduction of current input device |
| CN112882416B (en) * | 2021-01-13 | 2022-01-04 | 大连理工大学 | Circuit for self-adaptive power consumption reduction of current input device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103944982A (en) | Data collecting and controlling device and method for heterogeneous sensor network | |
| CN201750563U (en) | Online monitoring node device for warehouse environment state based on wireless sensor network | |
| CN104581058A (en) | Fan signal acquiring device | |
| CN212181635U (en) | Cigar tobacco fermentation humiture monitoring system based on LORA communication technology | |
| CN202522915U (en) | Data acquisition system based on vibration wire type sensor | |
| CN107666520A (en) | A kind of distributed data acquisition system and method for multirobot | |
| CN101561408A (en) | Soil humidity measuring device based on wireless microcomputer control | |
| CN205142280U (en) | Data acquisition system | |
| CN206146465U (en) | Box transformer monitoring device | |
| CN108500981B (en) | Intelligent medicine delivery robot system based on Internet of things and medicine delivery method | |
| CN105488977A (en) | On-site meter self-powered wireless adaptive system | |
| CN207517175U (en) | The Internet of Things collecting terminal led to based on 4G the whole networks | |
| CN205318594U (en) | On --spot instrument wireless adapter of electric formula of asking for | |
| CN203069733U (en) | A vibration-detection-based partial discharging point positioning device used for GIS tests | |
| CN204155436U (en) | A kind of wireless sensing node for civil structure health monitoring | |
| CN201903879U (en) | Data collector of SD card | |
| CN213716146U (en) | Multi-channel vibrating wire acquisition instrument based on NB-IoT and Bluetooth functions | |
| CN203396355U (en) | Non-contact type absolute angle sensor | |
| CN202472768U (en) | Air conditioner parameter recording device for train | |
| CN206804750U (en) | New Electric Quality Monitoring | |
| CN204155124U (en) | Distributed environment monitoring and control system | |
| CN104299392A (en) | Wireless sensing node for monitoring health of building structure | |
| CN205809168U (en) | Electric automobile energy consumption testing device | |
| CN204903987U (en) | Passive wireless data collector | |
| CN204880961U (en) | Refrigerator control system based on thing networking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |