Signal conversion device and automatic testing system

A signal conversion device and conversion technology, applied in the field of signal conversion, can solve the problems of small number of TTL level signals, difficult to control and complex problems, and achieve the effects of flexible matching, cost reduction, and automatic control

Active Publication Date: 2013-01-09
ANHUI TATFOOK M&E TECH
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  • Abstract
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Problems solved by technology

However, the number of TTL level signals output by this conversion method is small, and drivers need to be installed, so it is difficult to apply to control complex situations

Method used

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  • Signal conversion device and automatic testing system
  • Signal conversion device and automatic testing system
  • Signal conversion device and automatic testing system

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] see figure 1 , figure 1 is a schematic structural view of the signal conversion device according to the first embodiment of the present invention.

[0029] The signal conversion device 10 is connected with the host computer, and is used for receiving system control information from the host computer, and converting it into multiple TTL level signals for output. In the embodiment of the present invention, the upper ...

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Abstract

The invention discloses a signal conversion device, which is used for receiving system control information from an upper computer and converting the system control information into a plurality of TTL (Transistor-Transistor Logic) level signals to be output. The signal conversion device comprises a master control unit, wherein the master control unit is used for receiving the system control information from the upper computer through a USB (Universal Serial Bus) communication protocol and converting the system control information into an I2C (Inter-Integrated Circuit) communication protocol data format; the system control information is transmitted outwards and external return information is received through an I2C bus; and the master control unit is also used for outputting the TTL level signals according to the system control information. The invention also discloses an automatic testing system using the signal conversion device. In such a mode, a drive is not required to be mounted, and the required TTL level signals can be flexibly output; and the signal conversion device and the automatic testing system are suitable for controlling complex conditions.

Description

technical field [0001] The invention relates to the technical field of signal conversion, in particular to a signal conversion device and an automatic test system. Background technique [0002] TTL (Transistor-Transistor Logic) circuit is a logic circuit commonly used in digital electronic technology. When the TTL level signal is transmitted inside the computer and its controlled equipment, the power requirement is not high, the heat loss is low, and the connection with the integrated circuit does not require expensive line drivers and receiver circuits, which can meet the high-speed data transmission inside the computer-controlled equipment. , so it is widely used. [0003] However, a computer does not have a TTL output port, and it is often necessary to use a USB (Universal Serial Bus, Universal Serial Bus) port of the computer to convert the USB signal into a TTL level signal. [0004] The USB-TTL conversion in the prior art outputs a TTL signal by simulating a serial p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 刘湘萍
Owner ANHUI TATFOOK M&E TECH
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