This action triggers a bell (buzzer) to ring automatically for 5 seconds, alerting others that assistance is needed. Additionally, the name of the requested item is displayed on the LCD screen for 10 seconds. This device has applications across various fields, including hospitals, offices, and even restaurants.
In a hospital, a caretaker assists patients with daily tasks, such as administering medicine, feeding meals, and walking. Often, an elderly patient may struggle to communicate their needs due to difficulty in expressing themselves due to illness or weakness.
This device solves that issue by allowing patients to notify caretakers easily.
For mute patients, communication challenges can be even greater. In such cases, this device provides an effective solution, enabling patients to communicate their needs without verbal expression.
In office settings, during general meetings, ordering refreshments like tea, coffee, or snacks usually requires ringing a bell and waiting for an attendant. This process can cause delays and interruptions. With this device, orders can be placed quickly and discreetly, avoiding disruptions during meetings and saving time.
In restaurants, the device proves equally useful. With high customer volumes, waiters may struggle to serve customers promptly. When installed at tables, this system can allow customers to place orders directly to the manager or the kitchen.
The list of components required is detailed in the table.
Circuit and working
The device consists of two main sections: the transmitter and the receiver. Their operations are outlined below.
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Diese Geschichte stammt aus der October 2024-Ausgabe von Electronics For You.
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TRULY INNOVATIVE ELECTRONICS -INNOVATION UPDATES
Amongst numerous press releases of new products received by us, these are the ones we found worthy of the title Truly Innovative Electronics
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Nanotechnology based noninvasive cancer diagnostics
Nanoflake sensors built from indium oxide with platinum and nickel detect changes in isoprene
Space communication with silent amplifiers
In the new communication system from researchers at Chalmers University of Technology, in Sweden, a weak optical signal (red) from the spacecraft's transmitter can be amplified noisefree when it encounters two so-called pump waves (blue and green) of different frequencies in a receiver on Earth.
Advancements in TOPCon solar cells
The structure and performance of tandem devices with highly passivated TOPCon bottom cells
Quantum leap in magnetism refines superconductors
Rice University physicists have uncovered key magnetic and electronic properties in kagome magnets, structures resembling basket-weaving patterns.
Sensor targets food antioxidants
A research team from Hunan City University and Xiangtan University in China has developed a sensor for detecting TBHQ, a food antioxidant used in oils and fats, addressing health concerns at high concentrations.
Data sensing with repurposed RFID tags
UC San Diego researchers have advanced passive data collection with a breakthrough in battery-free sensing.
Seal-inspired sensors to safeguard offshore wind farms
Schematic structure of the seal whisker-inspired flow sensors
Artificial nose identifies scents accurately
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