CN102360521A - Current loop bus time-sharing switching multiplexing fixture - Google Patents
Current loop bus time-sharing switching multiplexing fixture Download PDFInfo
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- CN102360521A CN102360521A CN2011103009432A CN201110300943A CN102360521A CN 102360521 A CN102360521 A CN 102360521A CN 2011103009432 A CN2011103009432 A CN 2011103009432A CN 201110300943 A CN201110300943 A CN 201110300943A CN 102360521 A CN102360521 A CN 102360521A
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Abstract
The invention discloses a current loop bus time-sharing switching multiplexing fixture; a vibrating sensor is disposed at each test point of various positions; each vibrating sensor is in series connection to a relay coil; each relay coil is connected to a current driver; the current driver is connected to a second wireless single chip microcomputer; a first single chip microcomputer is connected to an output terminal of a host computer through a RS232 serial communication interface; an input terminal of the host computer is connected to an A/D converter; one input terminal of the A/D converter is connected to each vibrating sensor respectively through a coaxial cable; the other input terminal of the A/D converter is connected between the relay coil and the vibrating sensor; when the relay coil is turned on, vibration signals in the vibrating sensor connected to the relay coil are transmitted to the A/D converter. The invention can realize time-sharing switching of various vibrating sensor signals as required by detection; multipath signals are transmitted through one transmission line, which improves the reliability.
Description
Technical field
The present invention relates to a kind of timesharing that is used for input and signal transmission and switch the multiplexer device, the multichannel vibration signal of the rolling bearing in the fields such as for example oil-well drilling equipment is realized transmission.
Background technology
Petroleum drilling winch and transmission unit are operated in the field, receive the influence and the need of work of natural climate, and its working environment is relatively poor, mobile frequent.Rolling bearing cycle of oparation in the oil-well rig is long, working load is big, work under bad environment, price are high, fragile.If it is untimely that the rolling bearing that damages is changed, will influence the normal operation of drilling operation after the fracture, can cause drill bit to fall into oil well when serious and can't take out, oil well is scrapped, the economic loss that causes is considerable.Therefore, need rolling bearing is carried out online detection of operation conditions and replacing in time.
At present; The test point of general 16 diverse locations from petroleum drilling winch and transmission unit is observed the vibration duty of rolling bearing; The collection measure dot number is many; Distribute extensively, on the test point of 16 diverse locations, arrange vibration transducer, adopt analog quantity, wireless or these three kinds of modes of bus to be transferred to data acquisition equipment vibration sensor signal.When adopting the analog quantity mode to transmit; Vibration signal is transferred to the data acquisition equipment of far-end with 16 transmission lines; But because petroleum drilling winch equipment needs often to move, when moving 16 transmission lines patch numerous and diversely, workload is big; And in moving process, be easy to take place indivedual transmission lines by tensile phenomenon, increased the insecurity and the maintenance workload of signal transmission.When adopting the wireless mode transmission, though can be without transmission line, because the highest effective frequency of fault vibration of rolling bearing is about about 20MHz, than higher, this just requires the bandwidth of wireless transmission very wide, has obviously increased the cost of radio transmitting device.When adopting the bus mode transmission, need with 2 transmission lines.
Summary of the invention
The objective of the invention is for overcoming the deficiency of above-mentioned prior art; Provide a kind of electric current loop bus timesharing that wireless communication technology and single line transmission technology are combined to switch the multiplexer device; Accomplish the transmission of multipoint high-frequency vibration signal with coaxial wire, and the multichannel vibration signal is carried out timesharing switch.
The technical scheme that the present invention adopts is: at the test point place of diverse location a vibration transducer is set all; Each vibration transducer all is connected in series a relay coil; Each relay coil all connects a current driver; Current driver connects second wireless singlechip through code translator, and with the wireless signal communication, first wireless singlechip links to each other with the output terminal of host computer through the RS232 serial communication interface between first, second wireless singlechip; The input end of host computer connects A/D converter; An input end of A/D converter is connected with each vibration transducer respectively through a coaxial wire; Another input end of A/D converter is connected between relay coil and the vibration transducer, when relay coil is connected the vibration signal in the vibration transducer that is attached thereto is transferred in the A/D converter.
The invention has the beneficial effects as follows:
1, the present invention adopts the combination of a wireless communication technology and a high-quality coaxial shielding line to accomplish the transmission of multipoint high-frequency vibration signal; Greatly simplify the mode of connection and patched quantity; Reduced equipment cost, improved the reliability of system, solved well that the vibration signal measuring point is many, distributivity is wide, signal band is wide, the problem of being brought is moved in the frequent dismounting of equipment; And circuit is simple, is easy to realize.
2, the present invention can be switched different vibration sensor signal according to the needs timesharing that detects; Multiple signals adopt a transmission line; Having avoided the numerous and diverse circuit and the connector of analog quantity transmission employing, improved reliability, also is that disassembling of equipment moved and the reorganization installation provides great facility simultaneously.
3, the present invention not only is used for the transmission of multichannel vibration signal of the rolling bearing of oil-well rig, but also can be generalized to transmission and the dissimilar signal transmission of the bearing signal of other type in other association area.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain;
Fig. 1 is that structure of the present invention connects synoptic diagram;
Among the figure: 1. host computer; 2. first wireless singlechip; 3. second wireless singlechip; 4. code translator; 5. current driver; 6. relay coil; 7. vibration transducer; 8. coaxial wire; 9.A/D converter.
Embodiment
Referring to Fig. 1, the present invention is made up of host computer, 2 wireless singlechips, code translator, current driver, relay, A/D converter and high-quality concentric cable etc.Wherein, At the test point place of the diverse location that needs the test vibration state vibration transducer 7 is set all, for example, to the rolling bearing in petroleum drilling winch and the transmission unit; A vibration transducer 7 all is set on the test point of 16 diverse locations, promptly adopts 16 vibration transducers 7.Each vibration transducer 7 all is connected in series a relay coil 6, and promptly the quantity of relay coil 6 is identical with the quantity of vibration transducer 7.Each relay coil 6 all connects a current driver 5; Current driver 5 connects second wireless singlechip 3 through code translator 4; First wireless singlechip 2 links to each other with the output terminal of host computer 1 through the RS232 serial communication interface; Second wireless singlechip 3 and first wireless singlechip 2 are through the wireless mode transmission signals, and second wireless singlechip 3 is realized transmission of wireless signals through first wireless singlechip 2 and host computer 1.The input end of host computer 1 connects the output terminal of A/D converter 9; An input end of A/D converter 9 is connected with each vibration transducer 7 respectively through a coaxial wire 8, and another input end of A/D converter 9 is connected between relay coil 6 and the vibration transducer 7.
Host computer 1 includes kernel software; When observation interface being provided for operating personnel; Also the vibration signal data are analyzed accordingly and handled; Can realize remote monitoring and control, select the different actuating of relay, reach the purpose of orderly transmission multichannel vibration signal according to the timesharing of detection needs.First, second wireless singlechip 2,3 is responsible for realizing the communication of wireless signal.Code translator 4 can change 4 input signals into 16 output signals; And choose 16 outputs any signal in the signal according to the coding of 4 input signals; Thereby realize selection, reach the state of opening or closing of the arbitrary relay coil 6 in 16 relay coils of control any relay coil 6 of 16 relay coils.The signal that current driver 5 is chosen code translator 4 amplifies, so that can effectively drive the action of relay coil 6.Relay coil 6 plays a part connecting and disconnecting;, certain relay coil 6 can the vibration signal in the vibration transducer that connect therewith 7 be transferred in the A/D converter 9 when connecting; Make host computer 1 can receive the vibration signal in this vibration transducer 7, and in time handle and transmit.The effect of coaxial wire 8 is vibration signals of transportation simulator amount.A/D converter 9 is a digital signal with the detected vibration simulation signal transition of coaxial wire 8 transmission, and input host computer 1 is handled.
The course of work of the present invention is: the vibration signal of certain test point that host computer 1 will detect is through this some coding; Utilize first wireless singlechip 2 that this coding is sent; Second wireless singlechip 3 that this coding is connected code translator 4 receives; Choose a certain relay coil 6 in a plurality of relays through code translator 4, control this relay coil 6 closures, the vibration signal in the vibration transducer 7 that is connected with this relay coil 6 is transferred in the A/D converter 9 through coaxial wire 8; And the digital signal that its conversion obtains handled by host computer 1, thereby realize the transmission and the processing of the vibration signal of certain point.The transmission of accomplishing the multichannel vibration signal is exactly on above-mentioned basis; Control a plurality of relay coil 6 corresponding actions by the particular order timesharing; Utilize 8 timesharing of single coaxial cable line to be transferred in the host computer 1 selected each point vibration signal, thereby realized the transmission of the vibration signal of total system.
When the rolling bearing duty to petroleum drilling winch and transmission unit detects; Because bearing vibration signals sampling frequency is higher; In the very short time period, just can obtain more data; And the variation of the duty of rolling bearing is a kind of process slowly, and rolling bearing becomes fracture by normal condition or local shedding can not form at short notice, and needs the gradual change of a period of time; Need all not handle the data analysis of bearing vibration signal thus any moment data; Only need to gather and handle the duty that detects rolling bearing to having very closely-spaced data segment each other, therefore, the present invention is particularly useful for the detection to the rolling bearing duty of petroleum drilling winch and transmission unit.
Claims (1)
1. the multiplexer device is switched in the timesharing of electric current loop bus; At the test point place of diverse location a vibration transducer (7) is set all; It is characterized in that: each said vibration transducer (7) all is connected in series a relay coil (6); Each said relay coil (6) all connects a current driver (5); Current driver (5) connects second wireless singlechip (3) through code translator (4), and with the wireless signal communication, first wireless singlechip (2) links to each other with the output terminal of host computer (1) through the RS232 serial communication interface between first, second wireless singlechip (2,3); The input end of host computer (1) connects A/D converter (9); An input end of A/D converter (9) is connected with each vibration transducer (7) respectively through a coaxial wire (8); Another input end of A/D converter (9) is connected between relay coil (6) and the vibration transducer (7), when relay coil (6) is connected the vibration signal in the vibration transducer that is attached thereto (7) is transferred in the A/D converter (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103009432A CN102360521A (en) | 2011-10-09 | 2011-10-09 | Current loop bus time-sharing switching multiplexing fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103009432A CN102360521A (en) | 2011-10-09 | 2011-10-09 | Current loop bus time-sharing switching multiplexing fixture |
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| Publication Number | Publication Date |
|---|---|
| CN102360521A true CN102360521A (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103009432A Pending CN102360521A (en) | 2011-10-09 | 2011-10-09 | Current loop bus time-sharing switching multiplexing fixture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162816A (en) * | 2013-02-28 | 2013-06-19 | 唐山开诚电控设备集团有限公司 | Vibration monitoring method based on sensors |
| CN104444894A (en) * | 2014-12-04 | 2015-03-25 | 安徽省宿州市龙华防爆电器有限公司 | Combination line multiplexing device of underground coal mine winch |
| CN110119124A (en) * | 2018-02-06 | 2019-08-13 | 莫布林 | Equipment combines control mode |
Citations (2)
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| CN2854902Y (en) * | 2005-07-25 | 2007-01-03 | 商利勇 | Protection device for charging of digital control battery |
| CN101126660A (en) * | 2007-09-25 | 2008-02-20 | 北京英华达电力电子工程科技有限公司 | Circuit for fitting dissimilar sensor input |
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2011
- 2011-10-09 CN CN2011103009432A patent/CN102360521A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2854902Y (en) * | 2005-07-25 | 2007-01-03 | 商利勇 | Protection device for charging of digital control battery |
| CN101126660A (en) * | 2007-09-25 | 2008-02-20 | 北京英华达电力电子工程科技有限公司 | Circuit for fitting dissimilar sensor input |
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| 朱健,等: "石油钻井设备轴承振动信号采集系统设计", 《无线电工程》 * |
| 朱林生,等: "一种超低频绝对振动信号参数检测的实现方法", 《计算机测量与控制》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162816A (en) * | 2013-02-28 | 2013-06-19 | 唐山开诚电控设备集团有限公司 | Vibration monitoring method based on sensors |
| CN103162816B (en) * | 2013-02-28 | 2015-06-24 | 唐山开诚电控设备集团有限公司 | Vibration monitoring method based on sensors |
| CN104444894A (en) * | 2014-12-04 | 2015-03-25 | 安徽省宿州市龙华防爆电器有限公司 | Combination line multiplexing device of underground coal mine winch |
| CN110119124A (en) * | 2018-02-06 | 2019-08-13 | 莫布林 | Equipment combines control mode |
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Application publication date: 20120222 |