Liquid level detecting circuit, controller and water heater

Liquid level detecting circuit, controller and water heater

  • CN 104,215,296 A
  • Filed: 05/29/2013
  • Published: 12/17/2014
  • Est. Priority Date: 05/29/2013
  • Status: Active Application
First Claim
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1. a liquid level detection circuit, for the liquid level in tracer liquid container, and outputted to by the liquid level signal detected and control in water filling or the corresponding control device that discharges water, it is characterized in that, described liquid level detection circuit comprises:

  • Detecting electrode, comprises one and is arranged at the common port of bottom of liquid container and multiple test side arranged from described bottom of liquid container toward aligned on top, the special low alternating voltage of described common port access security;

    Signal processing circuit, be connected with described multiple test side, comprise the corresponding output terminal arranged in multiple and described multiple test side, described signal processing circuit receives corresponding test side to be had after detection signal and exports the detection waveform as liquid level signal at corresponding output terminal.

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