Hand held device

A handheld device and data technology, applied in the direction of measuring devices, instruments, electrical digital data processing, etc., can solve the problems of inconvenient portability and on-site measurement, restrictions on the use of engineering and technical personnel, and large volume

Active Publication Date: 2007-07-25
民航电信开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing automatic test system composed of measuring instruments, interface controllers and control hosts is too bulky and inconvenient to carry and measure on site, thus limiting the use of engineers and technicians

Method used

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Embodiment Construction

[0030] GPIB handheld devices are used in engineering sites to collect graphics and data from measuring instruments. This device allows engineers to use the 3.5-inch TFT LCD screen to view the waveform of the measuring instrument on site, and use the touch screen to allow the GPIB handheld device to control the measuring instrument, collect and store instrument data and waveforms. After the engineer returns to the laboratory, he reads the data from the GPIB handheld device through the network interface and performs subsequent operations.

[0031] On the whole, the GPIB handheld device is an embedded product designed according to user needs. It uses CPU, SDRAM, Flash, and Ethernet interfaces. Users can conveniently control the instrument according to the upper-level graphical interface.

[0032] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] As shown in FIG. 1 , a GPIB handheld device ...

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Abstract

A GPIB hand device consists of liquid crystal screen, data and address buss, GPIB bus for connecting with external unit of GPIB, CPU connected to internal power supply, SDRAM, FLASH, MAC chip, CPLD chip, GPIB master control chip, driving chip of GPIB data bus and driving chip of GPIB bus control signal.

Description

technical field [0001] The invention relates to a field acquisition measuring instrument, in particular to a GPIB handheld device. Background technique [0002] The automatic test system based on GPIB is the product of the combination of computer technology and automatic test technology, and it is widely used in many fields at present. A typical GPIB (General Purpose Interface Bus) measurement system consists of a PC, a GPIB interface card, and several (up to 14) GPIB instruments connected by standard GPIB cables. The GPIB interface card completes the connection between the GPIB bus and the PCI bus. GPIB interface instrument is an independent instrument, it can not only constitute a GPIB bus virtual instrument test system, but also can be used as an independent single instrument. [0003] The GPIB bus is a digital 24-pin (flat interface socket) parallel bus. Among them, 16 lines are TTL level signal transmission lines, including 8 bidirectional data lines, 5 interface mana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38G06F1/26
Inventor 佟小川吕小平侯军张燕峰王彦硕于军
Owner 民航电信开发有限责任公司
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