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An automatic control circuit for aerostat safety valve

An automatic control circuit and aerostat technology, applied in the direction of airbag layout, etc., can solve the problem of not being able to autonomously perceive the pressure difference inside and outside the aerostat airbag, and achieve a high degree of integration

Inactive Publication Date: 2017-01-04
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unable to autonomously sense the pressure difference inside and outside the airbag of the aerostat and automatically control the opening or closing of the safety valve

Method used

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  • An automatic control circuit for aerostat safety valve
  • An automatic control circuit for aerostat safety valve
  • An automatic control circuit for aerostat safety valve

Examples

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention more clear, the specific implementation of the present invention will be described in detail below based on examples and with reference to the accompanying drawings. However, it should be noted that the examples described herein are only used to explain the present invention, rather than limit the protection scope of the present invention.

[0033] See figure 2 Show the automatic control circuit of the aerostat safety valve (driven by motor) of the present invention, this circuit is made up of power supply unit, differential pressure sensing unit, hysteresis control unit, relay unit and motor control unit, respectively explain as follows:

[0034] The power supply unit is used to convert the power supply voltage into the DC voltage signal required for the work of each unit;

[0035] The pressure difference sensing unit has two tracheal probes, one tracheal probe communicates with t...

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Abstract

The invention relates to an automatic control circuit of an aerostat safety valve. The automatic control circuit comprises a power supply unit, a differential pressure sensing unit, a hysteresis control unit, a relay unit and a motor control unit, wherein the power supply unit is used for converting power supply voltage into working direct-current voltage signals of all of the units; the differential pressure sensing unit is provided with two air pipe probes which are respectively communicated with air inside and outside an air bag of an aerostat and is used for automatically sensing and outputting inside and outside pressure difference signals of the air bag of the aerostat; the hysteresis control unit is connected with the differential pressure sensing unit and is used for performing hysteresis comparison on the pressure difference signals of the air bag of the aerostat, so as to obtain low-level and high-level signals; the relay unit is connected with the hysteresis control unit and is used for controlling a contact switching motion of a relay by utilizing the low-level and high-level signals and changing the polarity of a motor power supply; the motor control unit is connected with the relay unit and is used for controlling the positive and negative rotation of a motor by utilizing the polarity switching of the motor power supply, performing limiting control over the walking of the motor and generating a status signal of the safety valve.

Description

technical field [0001] The invention belongs to the technical field of electronic control, and relates to an automatic control circuit for an aerostat to automatically control a safety valve. Background technique [0002] An aerostat generally refers to a soft-structure aircraft that mainly relies on atmospheric buoyancy to lift into the air. The aerostat is composed of a soft airbag and various equipment arranged on the airbag. The airbag is filled with a buoyant gas with a density lower than that of air. The buoyancy generated by the density difference between the inside and outside of the airbag provides most or Full lift, thereby completing the lift-off of the aerostat. [0003] The airbags of the aerostat have a certain tolerance range of internal and external pressure difference, which is determined by the airbag material strength, airbag volume and structure and other parameters. When the pressure difference between the inside and outside of the airbag exceeds a cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64B1/62
Inventor 徐文宽周江华连龙刚王保成
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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