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High-low temperature testing equipment of 1553B bus communication devices

A technology of bus communication and testing equipment, which is applied in the direction of bus network, data exchange through path configuration, electrical components, etc., and can solve problems such as failure to meet requirements

Active Publication Date: 2015-04-08
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the components on the entire test circuit board and the circuit under test are in a high and low temperature environment at the same time, the temperature range required by the circuit under test and the service life of the test circuit board become a pair of prominent contradictions.
For the test of class H (temperature requirement is -40°C~125°C) 1553B bus communication devices, this method cannot meet the requirements

Method used

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  • High-low temperature testing equipment of 1553B bus communication devices
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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 Shown is the high and low temperature test device used to realize all functional tests of four 1553B bus communication devices in the temperature range of -40°C to 125°C; image 3 Among the four tested H-level 1553B bus communication devices 14, 15, 16, and 17, the models are LHB155301, all of which are hybrid circuits realized by secondary integration packaging technology.

[0021] The temperature of the airflow output by Thermojet1 at the airflow output port 2 is displayed on the display screen 3 in real time. The temperature range at the airflow output port 2 can reach -80°C~225°C, and the temperature control accuracy of the airflow is less than 1°C.

[0022] As an adapter between Thermojet 1 and test circuit board 5, the temperature control adapter box 4 realizes simultaneous temperature control of 4 LHB155301s and ensures t...

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Abstract

The invention provides high-low temperature testing equipment of 1553B bus communication devices. A testing circuit board is arranged on a temperature control adaption box, and a Thermojet controls a temperature inside the temperature control adaption box; measured 1553B bus communication devices are installed on an opposite surface of the testing circuit board, and all the measured 1553B bus communication devices are connected by a 1553B truck line to form a 1553B bus communication network; a central processing unit (CPU), an address decoding circuit, a receiver-transmitter (RT) address control circuit and an emulator interface circuit are arranged on a front surface of the testing circuit board; and a main control computer controls a testing process executed by the CPU on the testing circuit board and states of the measured 1553B bus communication devices by an emulator interface and then displays and records testing results. The high-low temperature testing equipment provided by the invention can meet a requirement for coverage of high-low temperature testing functions of H-level 1553B bus communication devices, and a requirement for a testing temperature scope is met.

Description

technical field [0001] The invention relates to a high and low temperature test device for realizing all communication functions of a 1553B bus communication device, belonging to the technical field of testing. Background technique [0002] The 1553B bus is a digital time-division command-response multiplex transmission data bus, which has the advantages of strong anti-interference ability, high reliability and real-time transmission, and is widely used in aerospace, aviation and other fields. [0003] Most of the 1553B bus communication devices are digital-analog hybrid circuits with secondary integrated packaging, which can carry out bus communication of 10 different types of messages in 3 working modes; the 3 working modes of 1553B bus communication devices are: BC (BusControl, bus control Device) mode, RT (Remote Terminal, remote terminal) mode and BM (Bus Monitor, bus monitor) mode. To realize the test of all communication functions of the 1553B bus communication devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/40
Inventor 李春王延旗张方
Owner NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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