The utility model discloses a non-contact water level detection switch, which comprises a single chip computer and a detection circuit. The detection circuit includes an IC chip, the GND pin of the IC chip is grounded, the VREG pin of the IC chip is grounded by a capacitor C1, the SEN pin of the IC chip is grounded by a capacitor C3, the CR pin of the IC chip is grounded by a capacitor C4, and the VCC pin of the IC chip is connected by a 5V power supply. The capacitor C2 is grounded, the output terminal of OUT pin circuit of IC chip is connected, the output terminal of 5V power supply is connected through resistance R1, and the CX pin of IC chip is connected with water level detection device through resistance R3. When water flows through, the medium of the water level detection device changes, and the capacitance to ground of the water level detection device also changes. This change is processed by the OUT pin output to the single chip computer. SEN pins and CR pins are used to adjust sensitivity. This method does not need to insert the lead into the water. It is safe and reliable, and does not need non-magnetic conductive metal or plastic pipes. It has low cost and does not need complex installation.
【技术实现步骤摘要】
一种非接触式水位检测开关
本技术涉及,特别地,涉及一种非接触式水位检测开关。
技术介绍
水位检测开关是由磁簧开关和浮球组成,浮球内有磁环,在密闭的非导磁金属管或塑料管内设置一个或多个磁簧开关,然后将导管穿过一个或多个带有磁环的浮球,并利用卡槽控制浮球与磁簧开关在相关位置上,浮球随着液体上升或下降,利用球内磁铁去驱动磁簧开头的触点,产生开与关的动作,作液位控制或指示。但是市场上磁环和非导磁金属管或塑料管成本较高,安装较复杂,安装成本高,同时开关的引线要插入水中,存在漏电风险。
技术实现思路
为了克服现有技术的不足,本技术提供一种成本低、安装简单、安全可靠的非接触式水位检测开关,本技术解决其技术问题所采用的技术方案是:一种非接触式水位检测开关,包括单片机和检测电路,所述检测电路包括IC芯片,所述IC芯片的GND管脚接地,IC芯片的VREG管脚通过电容C1接地,IC芯片的SEN管脚通过电容C3接地,IC芯片的CR管脚通过电容C4接地,IC芯片的VCC管脚接5V电源,所述5V电源通过电容C2接地,IC芯片的OUT管脚接电路的输出端,5V电源通过电阻R1接到输出端,IC芯片的CX管脚通过电阻R3连接水位检测装置。优选地,所述水位检测装置为水位检测弹簧或者感应检测片,装置简单,测试灵敏,结果准确。优选地,所述电容C1、C2、C3、C4的容值为4.7nF、0.1uF、20pF、10pF,保证电路正常工作,精准测量。优选地,所述电阻R1、R3阻值为10KΩ、3KΩ,使电路中的电流电压正常,便于电路工作。优选地,所述水位检测开关位于水管外侧,水位检测装置贴在水管外侧,便于直接检测水 ...
【技术保护点】
1.一种非接触式水位检测开关,包括单片机和检测电路,其特征在于:所述检测电路包括IC芯片,所述IC芯片的GND管脚接地,IC芯片的VREG管脚通过电容C1接地,IC芯片的SEN管脚通过电容C3接地,IC芯片的CR管脚通过电容C4接地,IC芯片的VCC管脚接5V电源,所述5V电源通过电容C2接地,IC芯片的OUT管脚接电路的输出端,5V电源通过电阻R1接到输出端,IC芯片的CX管脚通过电阻R3连接水位检测装置。
【技术特征摘要】
1.一种非接触式水位检测开关,包括单片机和检测电路,其特征在于:所述检测电路包括IC芯片,所述IC芯片的GND管脚接地,IC芯片的VREG管脚通过电容C1接地,IC芯片的SEN管脚通过电容C3接地,IC芯片的CR管脚通过电容C4接地,IC芯片的VCC管脚接5V电源,所述5V电源通过电容C2接地,IC芯片的OUT管脚接电路的输出端,5V电源通过电阻R1接到输出端,IC芯片的CX管脚通过电阻R3连接水位检测装置。2.根据权利要求1所述的一种非...
【专利技术属性】
技术研发人员:李炳南,
申请(专利权)人:佛山市顺德区海伦宝电器有限公司,
类型:新型
国别省市:广东,44
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