CN2765405Y - Winch signal collection device with isolating gate - Google Patents

Winch signal collection device with isolating gate Download PDF

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Publication number
CN2765405Y
CN2765405Y CN 200420110484 CN200420110484U CN2765405Y CN 2765405 Y CN2765405 Y CN 2765405Y CN 200420110484 CN200420110484 CN 200420110484 CN 200420110484 U CN200420110484 U CN 200420110484U CN 2765405 Y CN2765405 Y CN 2765405Y
Authority
CN
China
Prior art keywords
bus
transceiver
controller
microcontroller
isolated gate
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.)
Expired - Fee Related
Application number
CN 200420110484
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Chinese (zh)
Inventor
袁建新
王民
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.)
Shanghai SK Petroleum Chemical Equipment Corp Ltd
Original Assignee
SHENKAI SCIENCE AND TECHNOLOGY ENGINEERING Co Ltd SHANGHAI
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 SHENKAI SCIENCE AND TECHNOLOGY ENGINEERING Co Ltd SHANGHAI filed Critical SHENKAI SCIENCE AND TECHNOLOGY ENGINEERING Co Ltd SHANGHAI
Priority to CN 200420110484 priority Critical patent/CN2765405Y/en
Application granted granted Critical
Publication of CN2765405Y publication Critical patent/CN2765405Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a winch signal collection device with an isolating grate, which comprises a host computer and a sensor. The utility model is characterized in that a CAN bus is arranged between the host computer and the sensor; the CAN bus is provided with at least one node each of which is connected with one sensor. The utility model has the advantages of easy equipment expansion; the sensor signal is not disturbed and the wiring cable is saved.

Description

The winch signal capturing device that has isolated gate
Technical field
The utility model relates to a kind of winch signal capturing device that has isolated gate, can be used for the collection of the tach signal that the drill pump in oil field dashes, and especially is fit to the occasion that the oil field has damp and uses, and belongs to signals collecting
Technical field.
Background technology
On the boring winch in oil field, adopt traditional dcs at present, as shown in Figure 1, expand an equipment and must increase an interface and a cable, cable between interface and the measuring and controlling equipment increases along with the increase of equipment, and the signal that transducer obtains is directly delivered to and is gone in the interface equipment to calculate and conversion of signals, on the cable of transducer and interface equipment, tend to be subjected to electromagnetic interference, make interface equipment calculate and make mistakes, produce error.
Summary of the invention
To be that invention is a kind of expand the winch signal capturing device that freedom, easy to connect and signal have isolated gate without interruption to the purpose of this utility model.
For realizing above purpose, the technical solution of the utility model provides a kind of winch signal capturing device that has isolated gate, comprise host computer and transducer, it is characterized in that, between host computer and transducer, there is not a CAN bus, the CAN bus is provided with at least one node, and each node is connected with a transducer.
Described node is made up of safety isolated gate, microcontroller, CAN controller, CAN transceiver and software thereof, and transducer attachment security isolated gate is connected with the CAN bus by microcontroller, CAN controller, CAN transceiver.
AD0~the AD7 of described CAN controller is connected to the P0 mouth of microcontroller, CS is connected to the P2.0 of microcontroller, the RD of CAN controller, WR, ALE link to each other to the corresponding pin of microcontroller respectively, INT meets micro controller I NT0, the TX0 of CAN controller and RX0 link to each other with the CAN transceiver after by high speed photo coupling, the CANH of CAN transceiver links to each other the R of CAN transceiver by fuse with small resistor with the CAN bus sBe connected to a slope resistance on the pin, two little electric capacity in parallel between the CANH of CAN transceiver and CANL and the ground are connected an anti-lightning strike pipe respectively between two CAN bus input ends and ground.
The utility model adopts the fieldbus structure, it is as the tie of smart machine, be connected to network system being articulated on the bus as apparatus for network node, further constitute automated system, realize basic controlling, compensation is calculated, parameter modification, report to the police, show, functions such as monitoring, its effect is to provide interface and host computer communication with the CAN fieldbus simultaneously with the digital signal that the pulse electrical signal that the speed probe of winch obtains converts us to and needs, because making, these characteristics of CAN bus in this system, add and minimizing equipment becomes very easy, this is the adaptability to changes of enhanced system widely just, extension facility saves arbitrarily within the quantity of regulation, the line cable of having economized cloth has shortened the set-up time.
The utility model has the advantages that extension facility is easy, the interference-free and saving wiring cable of sensor signal.
Description of drawings
Fig. 1 is former winch signal capturing apparatus structure schematic diagram;
Fig. 2 is the winch signal capturing device schematic diagram that has isolated gate
Fig. 3 is each node structure schematic diagram;
Fig. 4 is each node electrical schematic diagram;
Fig. 5 is the winch signal capturing device software flow chart that has isolated gate.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 2, for having the winch signal capturing device schematic diagram of isolated gate, the described winch signal capturing device that has isolated gate, form by host computer, CAN bus, 3 nodes 1 and transducer, between host computer and transducer, be provided with a CAN bus, the CAN bus is provided with at least one node 1, and each node 1 is connected with a transducer.
As shown in Figure 3, be each node structure schematic diagram, described node 1 is by the safety isolated gate, microcontroller, the CAN controller, the CAN transceiver, and software is formed, sensor interface attachment security isolated gate, pass through microcontroller, the CAN controller, the CAN transceiver is connected with the CAN bus, the safe buffer circuit signal of autobiography sensor in the future carries out safe handling and delivers to microcontroller later on signal is carried out pulse numeration and adaptive processes, microcontroller also is responsible for the initialization of CAN controller, realizes communication tasks such as the reception of data and transmission by control CAN controller.
As shown in Figure 4, be each node electrical schematic diagram, described circuit is made by safety buffer circuit, microcontroller 89C52, CAN controllers SJA1000, CAN transceiver 82C250, AD0~the AD7 of described CAN controller is connected to the P0 mouth of microcontroller, CS is connected to the P2.0 of microcontroller, P2.0 is 0 o'clock, CAN controller SJA1000 can be chosen in CPU chip external memory address, and CPU can carry out corresponding read/write operation to CAN controller SJA1000 by these addresses.The RD of CAN controller, WR, ALE link to each other to the corresponding pin of microcontroller respectively, INT meets micro controller I NT0, and microcontroller 89C52 also can visit CAN controller SJA1000 by interrupt mode.
In order to strengthen the antijamming capability of CAN bus node, the TX0 of CAN controller SJA1000 is not directly to link to each other with CAN transceiver 82C250 with RX0, but link to each other with CAN transceiver 82C250 by behind the high speed photo coupling 6N137, so just realized the internodal electrical isolation of each CAN on the bus well.Two power supply VCC and VDD that the optocoupler partial circuit is adopted isolate fully, this example has adopted special insulating power supply circuit, produced 3 fully independently insulating power supply respectively to the power supply of foregoing circuit and drawworks sensor, though the complexity that this part has increased circuit, the stability and the fail safe that have improved node.
Certain safety measure has also been adopted in the interface section of CAN transceiver 82C250 and CAN bus, and the CANH of CAN transceiver 82C250 links to each other with the CAN bus with small resistor by fuse, and protection CAN transceiver 82C250 avoids over-current shock; The R of CAN transceiver 82C250 sBe connected to a slope resistance on the pin, resistance sizes can suitably be adjusted according to bus communication speed, plays jamproof effect.
The little electric capacity of two 30pF in parallel between the CANH of CAN transceiver 82C250 and CANL and the ground; can play the ability of High-frequency Interference on the filtering bus and certain anti-electromagnetic radiation; in addition; between two CAN bus input ends and ground, connect an anti-lightning strike pipe respectively; when occurring the transition interference between two inputs and the ground; discharge by anti-lightning strike pipe can be played the certain protection effect; it is a kind of conflicting mode main in the electromagnetic compatibility field that transition is disturbed; lightning surge ripple particularly; because the duration is short; the pulse amplitude height, energy is big, brings great threat for the normal operation of electronic electric equipment.
As shown in Figure 5, for having the winch signal capturing device software flow chart of isolated gate, during work, on the CAN bus, install and winch matched node 1 according to the quantity of winch, each node 1 connects the transducer that is contained on the winch, microcontroller 89C52 carries out initialization to CAN controller SJA1000, accept sensor signal and convert the pulse electrical signal that drawworks sensor obtains to digital signal, carry out logical calculated, send after the step-by-step counting, if add winch, as long as a node 1 is installed again in the CAN bus, sensor installation on winch, be connected with node 1 and get final product, maximum like this 64 nodes 1 are installed, gather the signal of 64 winches simultaneously.

Claims (3)

1. winch signal capturing device that has isolated gate, comprise host computer and transducer, it is characterized in that, between host computer and transducer, be provided with a CAN bus, the CAN bus is provided with at least one node (1), and each node (1) is connected with a transducer.
2. the winch signal capturing device that has isolated gate according to claim 1, it is characterized in that, described node (1) is made up of safety isolated gate, microcontroller, CAN controller, CAN transceiver and software thereof, sensor interface attachment security isolated gate is connected with the CAN bus by microcontroller, CAN controller, CAN transceiver.
3. the winch signal capturing device that has isolated gate according to claim 1 and 2, it is characterized in that, AD0~the AD7 of described CAN controller is connected to the P0 mouth of microcontroller, CS is connected to the P2.0 of microcontroller, the RD of CAN controller, WR, ALE links to each other to the corresponding pin of microcontroller respectively, INT meets micro controller I NT0, the TX0 of CAN controller and RX0 link to each other with the CAN transceiver after by high speed photo coupling, the CANH of CAN transceiver links to each other the R of CAN transceiver by fuse with small resistor with the CAN bus sBe connected to a slope resistance on the pin, two little electric capacity in parallel between the CANH of CAN transceiver and CANL and the ground are connected an anti-lightning strike pipe respectively between two CAN bus input ends and ground.
CN 200420110484 2004-11-30 2004-11-30 Winch signal collection device with isolating gate Expired - Fee Related CN2765405Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420110484 CN2765405Y (en) 2004-11-30 2004-11-30 Winch signal collection device with isolating gate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420110484 CN2765405Y (en) 2004-11-30 2004-11-30 Winch signal collection device with isolating gate

Publications (1)

Publication Number Publication Date
CN2765405Y true CN2765405Y (en) 2006-03-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420110484 Expired - Fee Related CN2765405Y (en) 2004-11-30 2004-11-30 Winch signal collection device with isolating gate

Country Status (1)

Country Link
CN (1) CN2765405Y (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: SHANGHAI SK PETROLEUM & CHEMICAL EQUIPMENT CORPORA

Free format text: FORMER NAME OR ADDRESS: SHENKAI SICENCE AND TECHNOLOGY ENGINEERING CO., LTD., SHANGHAI

CP03 Change of name, title or address

Address after: 201114 980 Chen Road, Minhang District, Shanghai, Pudong

Patentee after: Shanghai Shenkai Petroleum & Chemical Equipment Corporation Ltd.

Address before: 201114 980 Chen Road, Minhang District, Shanghai, Pudong

Patentee before: Shenkai Science and Technology Engineering Co., Ltd., Shanghai

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060315

Termination date: 20131130