Application of NV170D voice chip in induction doorbell/welcome device

The welcome device, also known as the induction doorbell, is an electronic product used in small shops and convenience stores to automatically open the welcome door to prevent theft. Its predecessor was the electronic anti-theft alarm; people used it to prevent theft at first, but later the electronic anti-theft alarm made a harsh alarm sound, which had a negative impact on customers entering the store. Later, it evolved into a more pleasant sound, especially the "ding-dong" sound, "hello, welcome", which is particularly popular with users. The welcome voice is announced as soon as the customer enters the door, which plays a polite greeting, thereby achieving the dual functions of reminding the clerk that someone has entered the store and welcoming the customer.

The induction doorbell can make a sound: "Ding Dong, hello, welcome!" The main core is the application of the voice chip - Nine Core Electronics NV170D voice chip.

NV170D is a voice chip with stable performance. It does not require any peripheral circuits and can work normally in extremely harsh noise environments. It has a wide temperature and voltage resistance range and a normal working range of 2V~5.5V, which makes up for the poor anti-interference ability of voice chips on the market.

There is a set of PWM output ports, which can directly drive a 0.5w speaker with clear sound quality. Built-in LVR reset, no external reset circuit is required. Built-in precise internal resistance frequency oscillator (+-1% error), no external resistor is required.

It has multiple button triggering modes and can output multiple forms of level signals, which can be set to change according to the ups and downs of the voice. In addition, NV170D supports the main MCU serial port control, which can control multiple voice triggers at will. It is the only 8-pin voice chip on the market that can support 223 voices.

Application of NV170D voice chip in smart induction voice doorbell (content can be customized):

1. "Ding Dong, hello, welcome!";

2. "Thank you for your patronage. Please take care and come back next time!";

3. "Ding Dong sound, hello, welcome to XX convenience store!";......

NV170D can customize the voice content within 170s. If it exceeds 170s, you can choose different models of voice IC in the same series according to your product needs. NV040D, NV080D, and NV340D voice chips can achieve voice solutions within 40 seconds, 80 seconds, and 340 seconds. In addition to smart sensor voice doorbells, NV170D can be used in various voice prompt occasions, such as: blood pressure monitors, attendance machines, blood glucose meters, medical equipment, massagers, foot baths, voice toys, voice alarms, automotive electronics, small appliances, Buddhist chanting machines, game consoles, craft gifts, smart locks (fingerprint locks, password locks, card locks), barcode scanners, etc.