CN202306799U - Current loop bus time division switching multiplexing device - Google Patents
Current loop bus time division switching multiplexing device Download PDFInfo
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- CN202306799U CN202306799U CN2011203784385U CN201120378438U CN202306799U CN 202306799 U CN202306799 U CN 202306799U CN 2011203784385 U CN2011203784385 U CN 2011203784385U CN 201120378438 U CN201120378438 U CN 201120378438U CN 202306799 U CN202306799 U CN 202306799U
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- time division
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Abstract
The utility model discloses a current loop bus time division switching multiplexing device. A vibrating sensor is arranged at each test point of different positions; each vibrating sensor is connected in series with a relay coil; each relay coil is connected with a current driver; each current driver is connected with a second wireless single chip through a decoder; a first wireless singlechip is connected with the output end of an upper computer through a RS232 serial communication interface; the input end of the upper computer is connected with an analog/digital (A/D) converter; one input end of the A/D converter is connected with each vibrating sensor through a coaxial cable; another input end of the A/D converter is connected between the relay coils and the vibrating sensors; and when the relay coils are switched on, vibrating signals of the vibrating sensors connected with the relay coils are transmitted to the A/D converter. According to the current loop bus time division switching multiplexing device, different signals of the vibrating sensors are switched in a time division manner and multi-path signals adopt one transmission line, so reliability is improved.
Description
Technical field
The utility model relates to a kind of timesharing that is used for input and signal transmission and switches the multiplexer device, and 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 purpose of the utility model 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 utility model 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 beneficial effect of the utility model is:
1, the utility model 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 utility model can switch different vibration sensor signal according to the needs timesharing that detects; Multiple signals adopt a transmission line; Numerous and diverse circuit and the connector of having avoided the analog quantity transmission to adopt; Improved reliability, also moving and recombinate to install for disassembling of equipment simultaneously provides great facility.
3, the utility model 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 utility model is done further explain;
Fig. 1 is that the structure of the utility model 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 utility model 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.
The course of work of the utility model 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 utility model 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 vibration transducer (7) all is connected in series a relay coil (6); Each 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 |
|---|---|---|---|
| CN2011203784385U CN202306799U (en) | 2011-10-09 | 2011-10-09 | Current loop bus time division switching multiplexing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203784385U CN202306799U (en) | 2011-10-09 | 2011-10-09 | Current loop bus time division switching multiplexing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306799U true CN202306799U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203784385U Expired - Fee Related CN202306799U (en) | 2011-10-09 | 2011-10-09 | Current loop bus time division switching multiplexing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202306799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781869A (en) * | 2020-06-10 | 2020-10-16 | 上海空间电源研究所 | High-reliability satellite power supply controller matrix instruction system and control method thereof |
-
2011
- 2011-10-09 CN CN2011203784385U patent/CN202306799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781869A (en) * | 2020-06-10 | 2020-10-16 | 上海空间电源研究所 | High-reliability satellite power supply controller matrix instruction system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20131009 |