إضاءة Sensitive LDR وحدة ريلاي 12V

LDR الحساسة للضوءوحدة التتابعZKEEP0Z

This is a self-contained switching module that energizes / de-energizes a relay based on the the detection of visible light. Just add ZKEEP0Z power and hook up the load you want to control then adjust the potentiometer to set the brightness level at which you want the relay to switch between ON / OFF.

The Light Sensitive LDR Relay Module ZKEEP0Z can automatically control a load such as a night security light based on the ambient light level. The LDR sensor is attached to a 10″ lead for remote mounting.  The lead can be spliced to increase its length if desired.

سمات

• يتحكم تلقائيًا في التتابع بناءً على شدة الضوء
• مستشعر LDR (مقاوم يعتمد على الضوء) متضمن على سلسلة 10 بوصات يكتشف الضوء المرئي
• نقطة ضبط مستوى الضوء قابلة للتعديل
• يتحكم في أحمال 115/230VAC @ ZKEEP0Z
• يتحكم في الأحمال 0 – 15VDC @ ZKEEP0Z
• كلاً من جهات الاتصال NO (مفتوحة عادةً) وNC (مغلقة عادةً).
• مؤشر LED عند تنشيط التتابع
• تشغيل الطاقة ZKEEP0Z

نظرية التشغيل

مستشعر الضوء الموجود في الوحدة عبارة عن مقاوم حساس للضوء (LDR).

The brightness level trip-point for triggering the relay can be adjusted using the potentiometer on the module.  Turning the pot الأسلحة الكيميائية increases the brightness trip-point.

عندما يقل السطوع عن قيمة نقطة الرحلة، يقوم مقارن الجهد LM393 IC بتنشيط المرحل ويقوم بالتبديل على.  A blue LED is illuminated when the relay is energized.

عندما يزيد السطوع عن القيمة المحددة مسبقًا، يعود المرحل مرة أخرى عن.

يحتوي المرحل على جهات اتصال NO (مفتوحة عادةً) وNC (مغلقة عادةً)، لذا يمكن استخدام الوحدة can إما لتنشيط الحمل عندما يتجاوز السطوع قيمة نقطة الرحلة أو عندما ينخفض ​​إلى ما دون هذا المستوى.

A flyback diode is included on the module in parallel to the relay coil to safely shunt current when the relay coil is de-energized.  The module also has a reverse polarity protection diode on the ZKEEP0Z power input.

بينوت

قوة

The module requires ZKEEP0Z power and ground to operate.  There is a red LED that is lit when power is applied to the module. When the relay is de-energized it draws approximately ZKEEP1Z. When energized, the module draws about ZKEEP2Z from the Vcc pin.

• 1 ×2 محطة لولبية (توصيلات الطاقة)
• VCC = Connect to ZKEEP0Z power supply
• أرض = Connect to ground of the ZKEEP0Z power supply

حمولة

تم تصنيف خرج المرحل للتبديل إلى 30VDC عند ZKEEP0Z أو ما يصل إلى 250VAC عند ما يصل إلى ZKEEP1Z (انظر ملاحظاتنا أدناه).

الإخراج هو نوع SPDT مع كل من أ لا (Normally Open) terminal and a نورث كارولاينا (Normally Closed) terminal relative to the كوم terminal.  When the relay is de-energized (blue LED OFF) the NO-COM connection is open and the NC-COM connection is shorted.  When the relay is energized (blue LED ON) the NO – COM connection is shorted and the NC-COM connection is open.

1 × 3 محطة لولبية (توصيلات الحمل)

• قمة = Normally Open relay contact – Load is connected to this terminal if it should switch ON when relay is energized.
• مركز = Common connection – Connects to AC or DC power source for load that is being controlled.
• قاع = Normally Closed relay contact – Load is connected to this terminal if it should switch ON when relay is de-energized.

نتائج التقييم لدينا

These are nice inexpensive modules that will work for many applications and allow you to control devices based on sensing light without the need to have an MCU involved.  Just hook up ZKEEP0Z power and your load and you are all set.

The sensing works over a fairly wide range of light intensities.  The potentiometer provides a relative rather than absolute setting, so setting the trip point will require some amount of trial and error.  Positioning of the light sensor will also have an effect on the setting.

We do find the DC rating of the relay to be too aggressive. With DC voltages above about ZKEEP0Z, the contacts can become a little sticky. We recommend using it to switch DC voltages of no more than ZKEEP1Z.

With AC, the relays performed well in our testing.  To test the upper limit we used it to switch a ZKEEP0Z heater that draws about ZKEEP1Z and the relay handled it without any problems.

To test the device, connect it to ZKEEP0Z.  While pointing the LDR sensor towards a light source, adjust the pot so that the blue LED just goes off.  Shielding the LDR from the light should then cause the blue LED to turn on and an audible click heard from the relay as it switches.

مواصفة

محتويات الحزمة

• 1 ×  وحدة مرحل LDR الحساسة للضوء ZKEEP0Z
• 1 ×   مستشعر LDR مع اتصال سلكي