CN201539251U

CN201539251U - DTB/CAN bus signal simulator

Info

Publication number: CN201539251U
Application number: CN 200920245137
Authority: CN
Inventors: 苏娟; 吴银川
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2009-11-04
Filing date: 2009-11-04
Publication date: 2010-08-04
Anticipated expiration: 2019-11-04

Abstract

The utility model disclose a DTB/CAN bus signal simulator comprising a DSP controller 1, wherein the DSP controller 1 is connected with a DTB interface circuit 2, a Flash memory 6, a crystal oscillator 7, a reset circuit 8, guide mode equipment 9 and working mode equipment 10; and the working mode equipment 10 is connected with the DTB interface circuit 2, a CAN-UART conversion module 3 and a USB-UART conversion module 4. A power module 5 provides power for the DSP controller 1, the guide mode equipment 9 sets the guide mode for the DSP controller 1, the crystal oscillator 7 provides a working clock for the DSP controller 1, the reset circuit 8 ensures the reliable reset of the DSP controller 1, and the Flash memory 6 stores the data in the DSP controller 1. The working mode equipment 10 sets the working mode for the signal simulator. The DTB/CAN bus signal simulator has the characteristics of compact structure and convenient use.

Description

DTB/CAN bus signals simulator

Technical field

The utility model relates to a kind of signal simulator, particularly a kind of DTB/CAN bus signals simulator that is used for oil well logging cable telemetry system and well logging ground-based system detection.

Background technology

Oil well logging instrument is generally by well logging ground-based system, and cable telemetry system and downhole instrument three parts are formed, and downhole instrument generally is the combination of the logging instrument of number of different types.Downhole instrument is connected with cable telemetry system by CAN bus or DTB bus (downhole toolbus).During logger work, the transmitting order to lower levels of downhole instrument base area plane system arrives downhole cable telemetry system with log data by the CAN/DTB bus transfer with certain time sequence, through downhole cable telemetry system coding, is transferred to ground system behind the framing and handles.When well logging ground-based system and cable telemetry system work, usually need to connect upward downhole instrument ability operate as normal, because the downhole instrument kind is more, whole system couples together bulky, brings some inconvenience for production, debugging, maintenance and the check of well logging ground-based system and cable telemetry system.

Summary of the invention

In order to overcome the defective of above-mentioned prior art, the purpose of this utility model is to provide a kind of DTB/CAN bus signals simulator, can test and checks logging cable telemetry system and well logging ground-based system, has characteristics easy to use.

In order to achieve the above object, the technical solution of the utility model is achieved in that DTB/CAN bus signals simulator, comprise dsp controller 1, DTB interface circuit 2 signal input parts link to each other with the equipment that the outside has DTB bus protocol and serial communication protocol, signal output part links to each other with the DTB signal input part of dsp controller 1, and control end links to each other with the control end of mode of operation equipment 10; CAN-UART modular converter 3 signal input parts link to each other with outside CAN bus apparatus, and signal output part links to each other with the CAN signal input part of mode of operation equipment 10; USB-UART modular converter 4 signal input parts link to each other with outside source, and signal output part links to each other with the UART signal input part of mode of operation equipment 10; The signal output part of mode of operation equipment 10 links to each other with the control input end of dsp controller 1, one end ground connection of mode of operation equipment 10, the power input external power supply, the power input of dsp controller 1 is connected with power supply 5, Flash memory 6 links to each other with the Byte memory interface pin of dsp controller 1, the clock signal control end of crystal oscillator 7 is connected with the clock control end of dsp controller 1, the signal output part of reset circuit 8 links to each other with the reset signal end of dsp controller 1, and bootmode equipment 9 links to each other with the bootmode control pin of dsp controller 1.

The utility model can be connected with the logging cable data transmission system that adopts DTB bus or CAN bus, replace the digitlization downhole instrument, receive the ground system transmitting order to lower levels, send the downhole instrument data, logging cable telemetry system and well logging ground-based system are tested and checked.

Description of drawings

Accompanying drawing is a structure principle chart of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing structural principle of the present utility model and operating principle are described in detail.

With reference to accompanying drawing, DTB/CAN bus signals simulator, comprise dsp controller 1, DTB interface circuit 2 signal input parts link to each other with the equipment that the outside has DTB bus protocol and serial communication protocol, finish the conversion of outside DTB bus protocol and serial communication protocol, signal output part/GO, CMDCLK, DATCLK respectively with the DTB signal input part/IRQ2 of dsp controller 1, / IRQ1, / IRQ0 links to each other, CMDDATA, and the UDATA end links to each other with mode of operation equipment 10, CAN-UART modular converter 3 signal input parts link to each other with outside CAN bus apparatus, signal output part TXD-CAN links to each other with the CAN signal input part of mode of operation equipment 10 with RXD-CAN, and USB-UART modular converter 4 signal input parts link to each other with outside source, and the external USB bus protocol is converted to the UART agreement; Signal output part TXD-USB links to each other with the UART signal input part of mode of operation equipment 10 with RXD-USB, the signal output part of mode of operation equipment 10 links to each other with control input end F0, F1, PF4, the PF5 of dsp controller 1, one end ground connection of mode of operation equipment 10, the power input external power supply; The power input of dsp controller 1 is connected with power supply 5, Flash memory 6 links to each other with the Byte memory interface pin of dsp controller 1, be used for storage program and downhole instrument data, the clock signal control end of crystal oscillator 7 is connected with the clock control end of dsp controller 1, for dsp controller 1 provides clock signal; The signal output part of reset circuit 8 links to each other with the reset signal end of dsp controller 1, for dsp controller 1 provides reset signal; Bootmode equipment 9 links to each other with the bootmode control pin of dsp controller 1.

Operating principle of the present utility model is:

Power module 5 provides power supply for dsp controller 1, bootmode equipment 9 is provided with the bootmode of dsp controller 1, crystal oscillator 7 provides work clock for dsp controller 1, and reset circuit 8 guarantees dsp controller 1 reliable reset, the data in the Flash memory 6 storage dsp controllers 1.The mode of operation of mode of operation equipment 10 signalization simulators.

The DTB/CAN bus signals simulator that the utility model provides has three kinds of working methods.When the switch of mode of operation equipment 10 placed position 1, signal simulator was operated in DTB bus signals simulator mode, and signal simulator received order and sent the downhole instrument data by the DTB bus this moment; When the switch of mode of operation equipment 10 placed position 2, signal simulator was operated in CAN bus signals simulator mode, and signal simulator received order and sent the downhole instrument data by the CAN bus this moment; When the switch of mode of operation equipment 10 placed position 3, signal simulator was operated in configuration mode, and this moment, signal simulator can be connected to computer by USB interface, and download command and data also are saved in the Flash memory.

Claims

1.DTB/CAN bus signals simulator, it is characterized in that, comprise dsp controller (1), DTB interface circuit (2) signal input part links to each other with the equipment that the outside has DTB bus protocol and serial communication protocol, and signal output part links to each other with the DTB signal input part of dsp controller (1); Control end links to each other with the control end of mode of operation equipment (10), and CAN-UART modular converter (3) signal input part links to each other with outside CAN bus apparatus, and signal output part links to each other with the CAN signal input part of mode of operation equipment (10); USB-UART modular converter (4) signal input part links to each other with outside source, and signal output part links to each other with the UART signal input part of mode of operation equipment (10); The signal output part of mode of operation equipment (10) links to each other with the control input end of dsp controller (1), an end ground connection of mode of operation equipment (10), power input external power supply; The power input of dsp controller (1) is connected with power supply (5); Flash memory (6) links to each other with the Byte memory interface pin of dsp controller (1); The clock signal control end of crystal oscillator (7) is connected with the clock control end of dsp controller (1); The signal output part of reset circuit (8) links to each other with the reset signal end of dsp controller (1); Bootmode equipment (9) links to each other with the bootmode control pin of dsp controller (1).