Temperature detection and judgment method of electric tool for space on-orbit maintenance
A technology of electric tools and determination methods, which is applied to thermometers, thermometers, and electrical devices that use directly heat-sensitive electric/magnetic components, and can solve problems such as limited space layout and achieve the effect of avoiding failures
Pending Publication Date: 2022-04-29
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology
Due to the limited internal space layout of the power tool, the temperature of the electric tool outside the cabin can only be measured by a limited thermistor. Currently, there are 2 motor temperature detection signals, 2 reducer temperature detection signals and 2 battery temperature detection signals. If one channel fails, the ordinary comparison method cannot be used to judge. Therefore, it is urgent to propose a temperature detection and judgment method for electric tools used in space on-orbit maintenance to solve the above problems
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Embodiment 1
[0023] see figure 1 , a method for temperature detection and judgment of an electric tool for space on-orbit maintenance, the method includes the following steps:
[0024] Step 1. Collect 6 channels of temperature signals, and collect the analog quantities of the temperature of the motor, reducer and battery by polling;
[0025] Step 2. Determine whether the temperature of the motor exceeds the limit. If the temperature deviation calculated by the two thermistors of the motor is within 10°C, it is considered that the two thermistors are working normally, and the temperature of the two thermistors is higher. Judgment of temperature exceeding the limit, if the temperature difference collected by the two thermistors exceeds 10°C, it is considered that one thermistor is faulty, and the two temperature values need to be compared with the temperature of the reducer, and the temperature value is closer to the reducer The temperature prevails, and the temperature exceeds the limit ...
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The invention discloses a temperature detection and judgment method for an electric tool for space on-orbit maintenance, and the method comprises the following steps: collecting six paths of temperature signals, and carrying out the analog collection of the temperature of a motor, a speed reducer and a battery in a polling manner. According to the method, two temperature signals of the motor are compared and judged, when the difference value between the two sampling temperatures of the motor is within 10 DEG C, one temperature signal with the high temperature is selected for over-limit judgment, when the difference value is above 10 DEG C, one temperature signal close to the temperature of the motor is selected for judgment, the distance between two thermistors of the battery part is close, and the temperature difference value is small; and the normal temperature interval of the battery part is small, so that the temperature detection device is used for detecting and judging the temperature of a motor, a speed reducer and a battery of the electric tool for out-cabin maintenance during on-orbit maintenance, and electric tool faults caused by too high or too low temperature are avoided.
Description
technical field [0001] The invention relates to the technical field of outboard maintenance of space stations, in particular to a temperature detection and determination method for electric tools used for space on-orbit maintenance. Background technique [0002] The power tool for space on-orbit maintenance is a hand-held tool used for the installation and removal of fasteners for space station extravehicular equipment. It moves with the astronauts outside the cabin and is operated by the astronauts. In order to ensure that the electric tool can work normally in the environment with great changes in high and low temperature outside the cabin, it is necessary to detect and judge the temperature of the motor, reducer and battery of the electric tool. The electric tool is powered off to avoid the failure of the electric tool caused by the temperature being too high or too low. Due to the limited internal space layout of the power tool, the temperature of the electric tool outs...
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IPC IPC(8): G01K7/22
CPCG01K7/22
Inventor 武婷婷王哲于洋郑鹏边玉川金卫华熊涛李旭
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG