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发明公开
CN110579431A 一种自适应减光计及其减光测量方法 无效 - 撤回

一种自适应减光计及其减光测量方法
摘要：
本发明公开了一种自适应减光计及其减光测量方法，所述方法包括如下步骤：(1)接收源接收发光源发出的光；(2)接收源将接收到的光强度信号转化为电信号；(3)所述电信号发送到微控制单元MCU，微控制单元MCU根据接收的电信号的变化量来计算相应的减光率；(4)微控制单元MCU根据计算得到的减光率，调节微控制单元MCU中数模转换模块DA输出的模拟电压。本发明减光计所有的工作状态都由微控制单元MCU自行判断并根据判断结果去调节数模转换模块DA输出的模拟电压，完全可以做到低至0度乃至－10度到高至60度范围内的自适应放大输出，完全符合国标乃至欧标的测试要求。
摘要（英）：

The invention discloses a self-adaptive light attenuation meter and a light attenuation measurement method thereof. The method comprises the following steps that: (1), a receiving source receives light emitted by a light emitting source; (2), the receiving source converts a received light intensity signal into an electric signal; (3), the electric signal is sent to a micro control unit (MCU) and the MCU calculates a corresponding light attenuation rate according to the variation of the received electric signal; and (4), the MCU adjusts an analog voltage outputted by a digital-to-analog conversion module DA in the MCU according to the calculated light attenuation rate. According to the invention, all working states of the light attenuation meter are judged by the MCU and the analog voltageoutputted by the digital-to-analog conversion module DA is adjusted according to the judgment result. The self-adaptive amplification output within the range from 0 degree to-10 degrees even to 60 degrees can be completely realized, and the test requirements of the national standard and even the European standard are completely met.

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