An Adaptive Interface Device Compatible with Different Pressure Sensors

A pressure sensor and interface device technology, applied in the direction of logic circuit connection/interface layout, etc., can solve the problems of reducing the maintainability of atmospheric measuring devices and failing to meet the requirements of supporting atmospheric measuring devices, so as to improve maintainability and reduce dependence , the effect of reducing security pressure

Active Publication Date: 2019-05-10
BEIJING AUTOMATION CONTROL EQUIP INST
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Problems solved by technology

[0003] The output temperature and voltage signals of different types of resonant cylinder pressure sensors are divided into two types according to the interface: 0.4V ~ 0.8V and 4V ~ 8V. In the design of atmospheric measurement devices in the past, for different pressure sensor output voltage signal interfaces, the signal processing circuit must be adjusted to correspond to the analog Quantity-to-digital conversion interface design, the corresponding software also needs to be adaptively changed. This design scheme of pressure sensor-signal processing circuit-software coupling cannot meet the requirements of different temperature and voltage signal interface pressure sensors for dynamic supporting atmospheric measurement devices. Reduced atmospheric measurement device maintainability

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  • An Adaptive Interface Device Compatible with Different Pressure Sensors

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Embodiment Construction

[0020] An adaptive interface device compatible with different pressure sensors of the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0021] Such as figure 1 As shown, the technical solution of the present invention is applicable to the atmospheric measurement device in the aircraft guidance control system, including four parts: sensor installation printing plate 1, analog-to-digital conversion module 2, non-volatile memory 4, and sensor access judgment module 3;

[0022] Among them, the sensor installation printed board 1 is provided with an X-type pressure sensor with a temperature and voltage signal interface of 4V to 8V and a Y-type pressure sensor with a temperature and voltage signal interface of 0.4V to 0.8V.

[0023] Define the jack points 1 to 6 for the X-type pressure sensor to be installed as: Point 1——X-type power supply input +15V point, point 2——X-type frequency signal output point, point 3——X-type te...

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Abstract

The invention belongs to the technical field of aircraft guidance and control, and particularly relates to an adaptive interface device compatible with different pressure sensors. The core point of the invention is to provide a sensor access judgment module design scheme based on a nonvolatile memory pre-stored sensor type. The key points of the invention are that a sensor is equipped with a printed circuit board, a signal processing circuit analog and digital conversion module and a sensor access judgment module in a matched way, an adaptive interface compatible with different pressure sensors is realized, and the problem that signal processing circuit hardware design and software design depends on a concrete pressure sensor type is solved. The requirements of installing (matching) different types of pressure sensors of an atmospheric measurement device under the premise of not changing software and hardware are satisfied.

Description

technical field [0001] The invention belongs to the technical field of aircraft guidance and control, and in particular relates to an adaptive interface device compatible with different pressure sensors. Background technique [0002] Atmospheric measurement device is an important part of the aircraft guidance and control system, mainly composed of resonant cylinder pressure sensor, signal processing circuit and supporting software, among which the resonant cylinder pressure sensor is the core component of the atmospheric measurement device, mainly used for sensitive bleed air device introduction Atmospheric pressure, convert gas signal to electrical signal output. The signal processing circuit collects the frequency signal and temperature voltage signal output by the pressure sensor, and the software combines the sensor calibration parameters to calculate the pressure value to be measured. [0003] The output temperature and voltage signals of different types of resonant cy...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175
Inventor 周明孙洪庆苑景春高晓波赵莹康磊
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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