Formaldehyde has serious harm to our human body. It is a colorless gas with a pungent odor. Although formaldehyde has an odor, if the concentration is too low, you will not be able to smell the smell of formaldehyde, even if you can smell it. It's also hard to tell. Therefore, it is very important to use the formaldehyde detector to detect whether the formaldehyde content exceeds the standard.
NV080D voice chip formaldehyde detector voice solution:
Most formaldehyde detectors on the market only use buzzer prompts. It is not known how much data the measurement results contain, and it is not convenient for customers to judge the formaldehyde content. The NV080D voice chip is added to realize the real-person voice prompt function. Real-person voice playback is more humane. Through sensor judgment, it can play voice and issue alarms when the environment is polluted, broadcast the current pollution level of the environment, and other functions, allowing people to respond more appropriately. Know if your surroundings are safe.
NV080D voice chip formaldehyde detector entry content (can be customized):
. Welcome to use the XXX intelligent voice formaldehyde detector.
. When using it for the first time, please take the instrument to a ventilated place for 15-30 minutes before it can be used normally.
3. During the detection process, please place the instrument in a stable air environment for 5 minutes before reading.
4. In order to make the detection data stable, do not blow into the detection port or block the detection port during detection.
5. If the formaldehyde concentration exceeds the standard, please evacuate as soon as possible and open the windows to allow air circulation. Functional features of
NV080D voice chip:
★OTP storage format, fast production cycle, as fast as one day, no minimum order limit;
★Flexible multiple button operation modes and level output methods to choose from (edge button triggering , level trigger, random key play , sequential key play);
★Simple and convenient first-line MCU serial port and control method, the user master control MCU can control the trigger playback and stop of any segment of voice;
★ Voice duration is 40 seconds, 80 seconds, 170 seconds, 340 seconds;
★ Built-in set of PWM output device can directly push 0.5W speakers;
★Supports 16-level volume adjustment, loop playback and other functions;
★Flexible playback operation, which can save voice space through combination, and can play up to 220 voice combinations;
★Beautiful sound quality, stable performance, high quality and low price , the quiescent current is less than 2uA;
★ Built-in LVR self- reset circuit , to ensure the normal operation of the chip;
★ SOP8 and COB packages are available, easy to use and flexible in application;
★ supports 4-chord MIDI playback, and the sound quality is very beautiful;
★ The peripheral circuit is simple and only requires one coupling capacitor;
★ works Voltage range: 2V~5V.
★ Rich IO ports, built-in MCU, can customize various special functions;
NV080D voice chip pin diagram and corresponding table:
NV080D voice chip control mode:
①MCU first-line serial port control (with serial code function)
MCU first-line serial port control means that the main control MCU controls the trigger playback and stop of any piece of voice through the DATA data line. The following timing is used for the timing. The corresponding relationship between
data and voice
can support the sending of 223 sounds and commands. The format of voice address sending and command sending are the same, and the sending is independent of each other.
②MCU second-line serial port control (with serial code)
button control mode: The defined pin can directly trigger the chip to play sound, that is, each pin can control the playback of a piece of voice. The triggering mode of each switch can be set independently, and the anti-shake time of the key control mode is 17ms.
