Android传感器采样率不会低于60 Hz [英] Android sensor sampling rate won't drow below 60 hz

问题描述

我正在读取Sony Smartwatch 3上的加速度传感器.由于Android Wear 1.5更新，无论天气如何，我使用SENSOR_DELAY_NORMAL，SENSOR_DELAY_UI或SENSOR_DELAY_GAME时，采样率都不会降到60hz以下.在更新之前，SENSOR_DELAY_NORMAL导致大约18个样本/秒的采样率.

I'm reading out the accelerometer sensor on a Sony Smartwatch 3. Since the Android Wear 1.5 update the sampling rate won't drop below about 60hz, regardless weather I use SENSOR_DELAY_NORMAL, SENSOR_DELAY_UI or SENSOR_DELAY_GAME. Before the update SENSOR_DELAY_NORMAL resulted in a sampling rate of about 18 samples/seconds.

accelerometer.getMaxDelay()仍返回62500，这将是16个样本/秒.在sensorManager.registerSensor(this, accelerometer, 62500)中注册传感器时，我还尝试直接设置所需的延迟，但这也不起作用.

accelerometer.getMaxDelay()still returns 62500, which would be 16 samples/sec. I also tried setting the desired delay directly, when registering the sensor with sensorManager.registerSensor(this, accelerometer, 62500) but this doesn't work either.

有人对我如何降低采样率有任何想法吗?对于我的应用程序来说，提高能源效率非常重要，这就是为什么低采样率很重要的原因.

Has anybody any idea of how I can reduce the sampling rate? It's very important for my app to be energy efficient, thats why the low sampling rate is important.

推荐答案

有什么不同:不是Android更新改变了行为，这是我的误解.

How could it have been different: Not the Android update changed the behavior, it was my misunderstanding.

对于每个可能在传感器分批或采样率方面遇到问题的人:

For everyone who might have problems with sensor batching or sampling rates:

• 打开或关闭显示屏时，采样率可能会有所不同.在我的情况下，打开时为60hz，关闭时为18hz.
• 当设备连接到电源时，传感器批处理可能无法进行.对我来说，我要拔掉USB电缆.在这种情况下，蓝牙调试可能会有所帮助.

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