CN103426286A - Flow collecting device based on wireless data transmission - Google Patents
Flow collecting device based on wireless data transmission Download PDFInfo
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- CN103426286A CN103426286A CN2013103883948A CN201310388394A CN103426286A CN 103426286 A CN103426286 A CN 103426286A CN 2013103883948 A CN2013103883948 A CN 2013103883948A CN 201310388394 A CN201310388394 A CN 201310388394A CN 103426286 A CN103426286 A CN 103426286A
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Abstract
The invention provides a signal collecting device based on wireless data transmission, and belongs to the technical field of flow collecting. The device comprises a power module, a flow sensor, a high-precision AD collecting module, an emitting end MCU micro controller, a wireless transmitting module, a transmitting end slip ring, a receiving end slip ring, a wireless receiving module, a receiving end MCU micro controller, and a CAN communication module. The transmitting end slip ring and the receiving end slip ring are connected together. The flow sensor, the high-precision AD collecting module, the transmitting end MCU micro controller and the wireless transmitting module are installed on the transmitting end slip ring. The wireless receiving module, the receiving end MCU micro controller and the CAN communication module are installed on the receiving end slip ring. The collecting module directly obtains a signal value from the sensor and sends out the signal value from the wireless transmitting module, the wireless receiving module at the other end provides received signal data information and the like to the MCU controller, and ultimately the MCU controller sends signals to a control and display end so that the signals can be processed, controlled and displayed.
Description
Technical field
The invention belongs to the flow collection technical field, be specifically related to a kind of flow harvester based on wireless data transmission technology.
Background technology
When carrying out drilling operation, often need the staff at aboveground real-time monitoring down-hole state, comprise equipment working state, subsurface environment information etc.This just need to constantly gather down-hole information by various sensors, then via signalling channel, transmits back aboveground.The general mode [1] that adopts slip ring to connect transmission on signalling channel, signal is by slip ring (A, the B) transmission of rotating contact.The signal of exporting due to most of sensors is all light current, so when signal transmits by slip ring, the contact resistance of slip ring be can not ignore the impact of signal, it reduces the signal accuracy gathered greatly, sometimes even can cause the signal gathered to depart from actual value fully, can't guarantee the aboveground correct signal numerical value that collects at all like this.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of signal pickup assembly based on Wireless Data Transmission.Acquisition module directly obtains signal value from sensor, by wireless transmitter module, sent again, the wireless receiving module of the other end offers the MCU controller to the signal data information received etc. again, and last MCU controller sends signal to be controlled display end and carry out processing controls and demonstration.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of signal pickup assembly based on Wireless Data Transmission, by power module, flow sensor, high-precision A/D acquisition module, transmitting terminal MCU microcontroller, wireless transmitter module, transmitting terminal slip ring, receiving end slip ring, wireless receiving module, receiving end MCU microcontroller and CAN communication module, formed, wherein:
Transmitting terminal slip ring and receiving end slip ring link together; Flow sensor, high-precision A/D acquisition module, transmitting terminal MCU microcontroller and wireless transmitter module are arranged on the transmitting terminal slip ring; Wireless receiving module, receiving end MCU microcontroller and CAN communication module are arranged on the receiving end slip ring;
Described power module adopts the AMS1117 power supply chip, for other modules of harvester provide working power, different power supply chips is arranged on power module, through the conversion of power supply chip, produces the 3.3V DC voltage that modules works required;
Described flow sensor adopts BF350 type resistance strain plate, for the numerical value by fluid flow, is converted into electric signal;
Described high-precision A/D acquisition module adopts AD7799 high-precision A/D acquisition chip, directly with flow sensor, is connected.After the signal that flow sensor provides arrives the high-precision A/D acquisition module, the high-precision A/D acquisition module is responsible for the electric signal of reception is converted into to digital quantity signal, use the SPI communication mode to send to the MCU microcontroller, here use the purpose of high-precision A/D acquisition chip to be that it can identify the faint variation of flow sensor signal, improve the precision of image data;
Described transmitting terminal and receiving end MCU microcontroller adopt the STM32103VE single-chip microcomputer of ST Microelectronics, are the cores of whole signal pickup assembly.At the signals collecting end, transmitting terminal MCU microcontroller is responsible for receiving the digital quantity signal sent by the high-precision A/D acquisition module, and calculate actual flow value by the relation of collection signal value and flow value demarcation, then by with communicating by letter of wireless transmitter module, flow number being sent; At signal receiving end, the flow number that receiving end MCU microcontroller will receive from wireless receiving module is converted into the data that CAN signal post needs, then sends to and control display end and carry out processing controls and demonstration by peripheral CAN communication module;
Described CAN communication module adopts the A82C250 chip
Described wireless transmit and receiver module adopt 24L01 type wireless communication module, and it is a monolithic radio frequency transceiving device, works in 2.4GHz～2.5GHz ISM band; Our design comprises two wireless communication modules, is responsible for sending the data on flows collected, i.e. wireless transmitter module for one; Another is responsible for receiving data on flows, i.e. wireless receiving module, and they are connected with transmitting terminal or the receiving end MCU microcontroller of oneself end respectively.
Flow harvester based on wireless transmission provided by the present invention has the following advantages:
Design philosophy of the present invention is mainly the interference of slip ring to signals collecting during for flow collection, so this device can be avoided the problems referred to above effectively, improves measuring accuracy, makes collection result accurately credible; Be not merely to flow collection, the collection of other signals also can be used this device, and effect is good equally.
The accompanying drawing explanation
Fig. 1 is flow harvester structural representation of the present invention;
Embodiment
Below in conjunction with accompanying drawing, method of the present invention is described in further detail.
Figure 1 shows that the structural representation of signal pickup assembly of the present invention, this signal pickup assembly comprises two of power modules, one of high-precision A/D acquisition module, two of MCU micro controller modules, two of wireless communication modules, one of CAN communication module, two, contact slip ring.Each module is directly used wire as the connected mode of Fig. 1 and is connected, and is fixed on two slip rings.
As seen from Figure 1: two power modules are all from same power supply, power supply is in the power module power supply of giving right side, also access slip ring B, like this by the power module to left side by electrical energy transfer that contacts of slip ring A and slip ring B, the power supply of other modules all comes from this two power modules, and this device just can work like this;
Described slip ring inner ring is copper material, can transmit in the course of the work outside 12V power supply, realizes the power supply of modules by the power supply chip on 2 slip rings.Described flow sensor directly is connected with the high-precision A/D acquisition module, the AD acquisition module can accurately obtain the signal that flow sensor provides, and flow signal is converted into to digital quantity, each operational module in slip ring A left side all is subject to the control of a MCU micro controller module simultaneously simultaneously, communicate by letter and carry out data interaction by SPI between microcontroller and AD acquisition module, microcontroller is constantly asked for the flow sensor signal value to the AD acquisition module, so the AD acquisition module ceaselessly sends to microcontroller by the flow value collected; Simultaneously, microcontroller after receiving the data that the AD acquisition module sends, at once by the data that receive by another road SPI communication forwarding to wireless transmitter module, under the control of microcontroller, flow signal is launched;
As shown in Figure 1, in when normal operation, slip ring A and slip ring B contact, so the distance between two wireless communication modules is very near; After above-mentioned wireless transmitter module sends out flow signal, the wireless receiving module of slip ring B mono-side can receive wireless signal quickly and accurately, and send to the MCU microcontroller of slip ring B mono-side by the communicate by letter flow signal that will receive of SPI immediately, similar with slip ring A mono-side, the modules on right side is all also to be controlled by a MCU microcontroller; Equally, after receiving the flow signal that wireless module sends over, microcontroller according to the communication protocol determined, is converted into the CAN message by flow signal numerical value, then communicates by letter flow signal numerical value is sent to the aboveground external units such as master controller by CAN immediately.
Above description is the flow process of single flow signal acquisition, and described each parts are except 2 wireless modules are used wireless telecommunications, and other all use wire directly to connect.Constantly repeat above flow process in application, just realized the purpose of real-time monitoring flow information.
Be not that the flow collection signal can be used the present invention in fact, other any faint analog signals collections can utilize the present invention, and effect is the same.
All simple conversion of doing according to the claims in the present invention and description, all should belong to the protection domain that the present invention covers.
[1] Liu Xinping, room army, Jin Youhai.Well logging while drilling data transmission technology application present situation and prospect: China, 1004-1338 (2008) 03-0249-05.2008-06.
Claims (9)
1. the signal pickup assembly based on Wireless Data Transmission, it is characterized in that: power module, flow sensor, high-precision A/D acquisition module, transmitting terminal MCU microcontroller, wireless transmitter module, transmitting terminal slip ring, receiving end slip ring, wireless receiving module, receiving end MCU microcontroller and CAN communication module, consist of, transmitting terminal slip ring and receiving end slip ring link together; Flow sensor, high-precision A/D acquisition module, transmitting terminal MCU microcontroller and wireless transmitter module are arranged on the transmitting terminal slip ring; Wireless receiving module, receiving end MCU microcontroller and CAN communication module are arranged on the receiving end slip ring.
2. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1 is characterized in that: described power module adopts the AMS1117 power supply chip, for other modules of harvester provide working power.
3. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, it is characterized in that: described flow sensor is BF350 type resistance strain plate, for the numerical value by fluid flow, is converted into electric signal.
4. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, is characterized in that: described high-precision A/D acquisition module employing AD7799 high-precision A/D acquisition chip; After the signal that flow sensor provides arrives the high-precision A/D acquisition module, the high-precision A/D acquisition module is responsible for the electric signal of reception is converted into to digital quantity signal, uses the SPI communication mode to send to the MCU microcontroller.
5. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, is characterized in that: the STM32103VE single-chip microcomputer of described transmitting terminal MCU microcontroller and receiving end MCU microcontroller employing ST Microelectronics.
6. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, it is characterized in that: transmitting terminal MCU microcontroller is responsible for receiving the digital quantity signal sent by the high-precision A/D acquisition module, and the relation be directly proportional by collection signal value and flow value calculates actual flow value, then by with communicating by letter of wireless transmitter module, flow number being sent; The flow number that receiving end MCU microcontroller will receive from wireless receiving module is converted into the data that CAN signal post needs, then sends to and control display end and carry out processing controls and demonstration by peripheral CAN communication module.
7. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, is characterized in that: CAN communication module employing A82C250 chip.
8. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1, is characterized in that: described wireless transmitter module and wireless receiving module employing 24L01 type wireless communication module.
9. a kind of signal pickup assembly based on Wireless Data Transmission as claimed in claim 1 is characterized in that: described wireless transmitter module and wireless receiving module adopt NRF24L01 type wireless communication module, work in 2.4GHz～2.5GHz ISM band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388394.8A CN103426286B (en) | 2013-08-31 | 2013-08-31 | Flow collecting device based on wireless data transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310388394.8A CN103426286B (en) | 2013-08-31 | 2013-08-31 | Flow collecting device based on wireless data transmission |
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| CN103426286A true CN103426286A (en) | 2013-12-04 |
| CN103426286B CN103426286B (en) | 2017-05-10 |
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| CN201310388394.8A Expired - Fee Related CN103426286B (en) | 2013-08-31 | 2013-08-31 | Flow collecting device based on wireless data transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242064A (en) * | 2015-11-02 | 2016-01-13 | 中国水利水电科学研究院 | Wireless electromagnetic current meter |
| CN109668001A (en) * | 2019-01-02 | 2019-04-23 | 吴俊霖 | A kind of double containment filling type sleeve compensator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101645617A (en) * | 2009-08-26 | 2010-02-10 | 中国海洋石油总公司 | Slip ring |
| CN102394910A (en) * | 2011-09-06 | 2012-03-28 | 西南石油大学 | High-speed transmission monitoring system and method of digital well site |
| CN203433664U (en) * | 2013-08-31 | 2014-02-12 | 吉林大学 | Flow rate acquiring device based on wireless data transmission |
-
2013
- 2013-08-31 CN CN201310388394.8A patent/CN103426286B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101645617A (en) * | 2009-08-26 | 2010-02-10 | 中国海洋石油总公司 | Slip ring |
| CN102394910A (en) * | 2011-09-06 | 2012-03-28 | 西南石油大学 | High-speed transmission monitoring system and method of digital well site |
| CN203433664U (en) * | 2013-08-31 | 2014-02-12 | 吉林大学 | Flow rate acquiring device based on wireless data transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242064A (en) * | 2015-11-02 | 2016-01-13 | 中国水利水电科学研究院 | Wireless electromagnetic current meter |
| CN109668001A (en) * | 2019-01-02 | 2019-04-23 | 吴俊霖 | A kind of double containment filling type sleeve compensator |
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| CN103426286B (en) | 2017-05-10 |
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