The elevator safety light curtain sensor system is a newly developed high-quality automatic control product that combines the light curtain technology and price of the previous manufacturers, using infrared scanning detection technology. The transmitting device and the receiving device are installed on both sides, and the internal program is controlled by a single-chip computer and a microprocessor, so that the infrared transceiver unit forms an infrared light curtain warning barrier under high-speed scanning state, when people and objects enter the light curtain barrier area, The control system quickly converts the output level signal to make the load move. When the person and the object leave the light curtain warning area, the load is automatically closed automatically, thereby achieving the purpose of safety protection.
The elevator safety light curtain does not require a controller for practical application. It only needs a transmitter and a receiver. When it is used, it can be connected through an aviation plug socket or a cable. The output can be directly connected to a relay or various computer digital interfaces.
As shown in the figure, it is a schematic diagram of the test principle of detecting an object (such as a hand) with a safety light curtain. In the figure, one side of the light curtain is mounted with a plurality of infrared transmitting tubes at equal intervals, and the other side has the same number of infrared receiving tubes arranged in the same order, and each infrared transmitting tube has a corresponding infrared receiving tube, and is installed in the same On a straight line. When there is no obstacle between the infrared transmitting tube and the infrared receiving tube on the same straight line, the modulated signal (optical signal) emitted by the infrared transmitting tube can smoothly reach the infrared receiving tube. After the infrared receiving tube receives the modulated signal, the corresponding internal circuit outputs a low level, and in the case of an obstacle, the modulated signal (optical signal) emitted by the infrared transmitting tube cannot smoothly reach the infrared receiving tube, and the infrared receiving The tube does not receive the modulated signal, and the corresponding internal circuit output is high. When no object passes through the light curtain, all the modulated signals (optical signals) from the infrared transmitting tube can smoothly reach the corresponding infrared receiving tubes on the other side, so that the internal circuits all output low level. In this way, information on the presence or absence of an object can be detected by analyzing the state of the internal circuit.
The number of infrared transmitting and receiving paths of the safety light curtain can theoretically be up to 215. Generally, the height of the light curtain and the spacing between the upper and lower paths are generally not more than 48.
Sound module,Recordable sound module:
Ningbo AST Industry Co.,Ltd has 17 Years Experiences to produce the Recordable sound module, sound module, sound chip, voice module, recordable sound chip,Musical module and other electronic modul. we can assure you of competive price,high quality,prompt delivery and technology supporting.
1. Sound Module Application:
Sound Module is one kind of electronic product which mainly applied for Greeting cards,Christmas cards, promotion gifts, kids books, newspapers, magazines or other products which have sounds.
2. Sound Module Classification:
We can produce different sound modules which have different functions:
A. Pre-record Sound Module ----The clients will provide their sound files to us as MP3 or Wav Format,Then we programme them into the Sound module,it will play the customized message.
The sound file can be from 1second to 480seconds
B. Recordable Module ---also called Self-recording sound chip,we can record our own messages and playback them. Of course,the message can be erased and re-recorded.
Recording time:6seconds,10seconds,20seconds,30seconds,60seconds,90seconds,120seconds,180seconds etc
C. Melody module --Which can play the Melody of the Happy Birthday,Merry Christmas,Slient Night and so on.
D. USB MP3 Module ---We Can download the songs,musics,sentences,voice,advertising language from PC directly. Which support SD Cards,TF Cards,U Disk and FM.LCD Display also can be made
E. Programmable Voice Module --Also can be called DIY Sound Chip,We provide the software and Programable Machine and the Clients can be programmed them at their office,factory or Home. Which is much suitable to small order quantity,but Prompt delivery order.
F. Waterproof Music Module --which usually are used by Children Cloths,Kids'Bib ,attract the children's attention or Sing the children's songs.
3. Sound Quality:Clearly and Loudly ( 16Khz Sampling Rate)
4. Activated way:
1) Pull String -- Pull the string to activate the sound.
2) Slide tongue,usually was used by greeting cards,open the cards,it will play the message automatically.
3) Push buttons--press the button to play the message/audio/music
4) Light sensor,usually was used by Gift box,newspaper. Open the Box or newspaper to play the message
5) vibration sensor,Move or shake it to play the customized audio
6) shadow sensor,if somebody walks front it,it will play the message.
7) Motion sensor,usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
8) PIR (Infrared sensor),usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
5. Long Lifespan
6. Speaker:21mm,27mm,29mm,36mm,40mm,57mm etc. Plastic or Metal
7. Battery:AA, AAA, AG13, AG10, AG3 and so on environmental
8. PCB available: customize size or our existed standard size
9. PCB:Customized Size (OEM or ODM) or our existed standard size
10. Certification:CE ,Rohs
11. Export to: USA, UK,Canada,Germany, Turkey,Russia,Poland,Switzerland,Netherland ,Frence Hungary ,Australia,New Zealand, Brazil, Columbia,Argentina,Thainland,Singapore , Malaysia and so on
Activation Sound Chip, Motion Sensor Sound Module, Pre-Record Sound Chip
AST Industry Co.,LTD , https://www.astsoundchip.com