Height collecting device and air spring height adjusting device

The invention discloses a height collecting device and an air spring height adjusting device. A height acquisition device is characterized in that the height acquisition device comprises an emitter, an image acquisition device and an image processor, and the image acquisition device is connected with the image processor; the emitter, the image collector and the image processor are arranged at the first end part. The air spring height adjusting device comprises a central control unit, an inflation valve, an exhaust valve and the height collecting device. According to the technical scheme provided by the invention, compared with a traditional height sensor, the height acquisition device is smaller in occupied space and can adapt to a narrower space, and the change of acquired data is more accurate; the air spring adopting the air spring height adjusting device is arranged in the air spring, so that the service life is longer, the overall occupied space is smaller, and the air inflation and deflation control of