CN109580612A - 一种新型电子验孕电路 - Google Patents
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Abstract
本发明公开了一种新型电子验孕电路，包括有单片机、颜色传感器、发光二极管、休眠唤醒电路及液晶显示器；所述单片机控制整个电路的工作；颜色传感器用于试纸显色的读取；发光二极管用于为试纸提供光源照明；液晶显示器用于显示结果。本发明的新型电子验孕电路，具有可精确读取试纸显色值从而实现判断怀孕初期怀孕周数的目的，具有结构简单、使用方便、成本低等优点。
Description
技术领域
本发明涉及一种新型电子验孕电路。
背景技术
目前，对于怀孕初期的判断，人们通常采用验孕试纸或者电子验孕棒来进行。主流产品其原理都是通过试纸与尿液作用后显色来反映尿液中人绒毛膜促性腺激素（hCG）的水平，进而判断是否怀孕，而电子验孕棒可以通过精确读取显色值进而判断怀孕初期怀孕周数。 目前市场上的电子验孕棒均采用光敏二极管来设计读取显色值，虽然成本较低，但发光角度、发光强度对其影响较大，对生产组装工艺及试纸一致性要求较高。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种新型电子验孕电路。
本发明是通过以下技术方案实现的：
一种新型电子验孕电路，包括有单片机U1、颜色传感器U2、液晶显示器LCD、发光二极管DS1、发光二极管DS2、发光二极管DS3和发光二极管DS4，其中发光二极管DS1与发光二极管DS3串联，发光二极管DS2与发光二极管DS4串联后再与发光二极管DS1与发光二极管DS3并联，所述的单片机U1的PB2端口连接限流电阻R5的一端，PB1端口依次连接发光二极管DS1与发光二极管DS3的连接端和发光二极管DS2与发光二极管DS4的连接端，PB0端口连接限流电阻R4的一端，限流电阻R5和限流电阻R4的另外一端分别连接发光二极管DS1的负极和发光二极管DS3的正极，单片机U1的PA3端口连接颜色传感器U2的/OE端口，PA2端口、PA0端口、PA4端口和PA5端口均与液晶显示器LCD连接，VSS端口接地，VDD端口连接VCC电压端，VSS端口和VDD端口还分别连接稳压滤波电容C1的两端，单片机U1的PB3端口和PB4端口分别连接颜色传感器U2的S2端口和S3端口，PA6端口连接缓冲电阻R6的一端，缓冲电阻R6的另一端连接颜色传感器U2的OUT端口，颜色传感器U2的S0端口和GND端口均接地，S1端口连接VCC电压端，颜色传感器U2的VDD端口分别连接VCC电压端和电源滤波电容C3的一端，电源滤波电容C3的另一端接地，单片机U1的PA1端口和PB5端口分别连接休眠唤醒电路的两端。
所述的休眠唤醒电路是由电阻R1、电阻R2、电阻R3和电容C2组成的，电阻R2、电阻R1和电容C2串联，单片机U1的PA1端连接在电阻R1和电容C2之间，电容C2的另一端接地，电阻R2的另一端连接单片机U1的PB5端，金属触点PAD2端连接在电阻R2和电阻R1之间，电阻R3的一端连接金属触点PAD1端，另一端接地。两个金属触点，接触待测尿液导致短路唤醒电路工作开始测试。
所述的单片机U1的型号为HT68F003。
所述的颜色传感器U2的型号为TCS3200。
本发明的优点是：本发明所设计的新型电子验孕电路采用颜色传感器来读取试纸显色值，精度更高，对怀孕周数的判断更精确，这种设计发光角度及发光强度对结果的影响很小，可以显著降低生产难度，提高良品率，进而间接的降低成本。
附图说明
图1为本发明的电路图。
具体实施方式
如图1所示，一种新型电子验孕电路，包括有单片机U1、颜色传感器U2、液晶显示器LCD、发光二极管DS1、发光二极管DS2、发光二极管DS3和发光二极管DS4，其中发光二极管DS1与发光二极管DS3串联，发光二极管DS2与发光二极管DS4串联后再与发光二极管DS1与发光二极管DS3并联，所述的单片机U1的PB2端口连接限流电阻R5的一端，PB1端口依次连接发光二极管DS1与发光二极管DS3的连接端和发光二极管DS2与发光二极管DS4的连接端，PB0端口连接限流电阻R4的一端，限流电阻R5和限流电阻R4的另外一端分别连接发光二极管DS1的负极和发光二极管DS3的正极，单片机U1的PA3端口连接颜色传感器U2的/OE端口，PA2端口、PA0端口、PA4端口和PA5端口均与液晶显示器LCD连接，VSS端口接地，VDD端口连接VCC电压端，VSS端口和VDD端口还分别连接稳压滤波电容C1的两端，单片机U1的PB3端口和PB4端口分别连接颜色传感器U2的S2端口和S3端口，PA6端口连接缓冲电阻R6的一端，缓冲电阻R6的另一端连接颜色传感器U2的OUT端口，颜色传感器U2的S0端口和GND端口均接地，S1端口连接VCC电压端，颜色传感器U2的VDD端口分别连接VCC电压端和电源滤波电容C3的一端，电源滤波电容C3的另一端接地，单片机U1的PA1端口和PB5端口分别连接休眠唤醒电路的两端。
所述的休眠唤醒电路是由电阻R1、电阻R2、电阻R3和电容C2组成的，电阻R2、电阻R1和电容C2串联，单片机U1的PA1端连接在电阻R1和电容C2之间，电容C2的另一端接地，电阻R2的另一端连接单片机U1的PB5端，金属触点PAD2端连接在电阻R2和电阻R1之间，电阻R3的一端连接金属触点PAD1端，另一端接地。
所述的单片机U1的型号为HT68F003。
所述的颜色传感器U2的型号为TCS3200。
U1为单片机，用于协调控制其他模块的工作，C1为单片机的稳压滤波电容；U2为颜色传感器，用于读取试纸颜色，在单片机控制下工作，C3为颜色传感器的电源滤波电容，R6为颜色传感器和单片机之间的缓冲电阻；DS1、DS2、DS3和DS4为发光二极管，在单片机控制下工作，为颜色传感器的工作提供光源，R4和R5为发光二极管的限流电阻，可以调节发光强度；休眠唤醒电路由R1、R2、R3和C2构成，在单片机控制下工作，当金属触点PAD1和金属触点PAD2的电路触点被尿液浸润后会拉低单片机6脚PA1端口的电压，唤醒休眠状态的单片机开始检测；LCD为液晶显示器，在单片机控制下工作，用于显示测试结果。
Claims (4)
1.一种新型电子验孕电路，其特征在于：包括有单片机U1、颜色传感器U2、液晶显示器LCD、发光二极管DS1、发光二极管DS2、发光二极管DS3和发光二极管DS4，其中发光二极管DS1与发光二极管DS3串联，发光二极管DS2与发光二极管DS4串联后再与发光二极管DS1与发光二极管DS3并联，所述的单片机U1的PB2端口连接限流电阻R5的一端，PB1端口依次连接发光二极管DS1与发光二极管DS3的连接端和发光二极管DS2与发光二极管DS4的连接端，PB0端口连接限流电阻R4的一端，限流电阻R5和限流电阻R4的另外一端分别连接发光二极管DS1的负极和发光二极管DS3的正极，单片机U1的PA3端口连接颜色传感器U2的/OE端口，PA2端口、PA0端口、PA4端口和PA5端口均与液晶显示器LCD连接，VSS端口接地，VDD端口连接VCC电压端，VSS端口和VDD端口还分别连接稳压滤波电容C1的两端，单片机U1的PB3端口和PB4端口分别连接颜色传感器U2的S2端口和S3端口，PA6端口连接缓冲电阻R6的一端，缓冲电阻R6的另一端连接颜色传感器U2的OUT端口，颜色传感器U2的S0端口和GND端口均接地，S1端口连接VCC电压端，颜色传感器U2的VDD端口分别连接VCC电压端和电源滤波电容C3的一端，电源滤波电容C3的另一端接地，单片机U1的PA1端口和PB5端口分别连接休眠唤醒电路的两端。
2.根据权利要求1所述的一种新型电子验孕电路，其特征在于：所述的休眠唤醒电路是由电阻R1、电阻R2、电阻R3和电容C2组成的，电阻R2、电阻R1和电容C2串联，单片机U1的PA1端连接在电阻R1和电容C2之间，电容C2的另一端接地，电阻R2的另一端连接单片机U1的PB5端，金属触点PAD2端连接在电阻R2和电阻R1之间，电阻R3的一端连接金属触点PAD1端，另一端接地。
3.根据权利要求1所述的一种新型电子验孕电路，其特征在于：所述的单片机U1的型号为HT68F003。
4.根据权利要求1所述的一种新型电子验孕电路，其特征在于：所述的颜色传感器U2的型号为TCS3200。
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| CN102901808A (zh) * | 2012-10-25 | 2013-01-30 | 广州万孚生物技术股份有限公司 | 带湿度感应功能的分析检测装置及分析检测方法 |
| CN107807122A (zh) * | 2017-10-25 | 2018-03-16 | 上海菲伽生物科技有限公司 | 基于体液试纸反应颜色确定人体生理参数的装置、系统 |
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Patent Citations (6)
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| EP0074520A1 (en) * | 1981-09-16 | 1983-03-23 | Teva Pharmaceutical Industries Limited | Method and kit for pregnancy detection |
| CN1865944A (zh) * | 2006-06-15 | 2006-11-22 | 福州大学 | 无创定量hcg检测方法 |
| CN202110248U (zh) * | 2011-05-25 | 2012-01-11 | 河南新天科技股份有限公司 | 一种光电检测装置 |
| CN102323215A (zh) * | 2011-08-05 | 2012-01-18 | 广州万孚生物技术有限公司 | 分析读数装置及分析读数方法 |
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| CN107807122A (zh) * | 2017-10-25 | 2018-03-16 | 上海菲伽生物科技有限公司 | 基于体液试纸反应颜色确定人体生理参数的装置、系统 |
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