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Honey bee publish details |
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Cool Skool |
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| Title |
Creativity Unlimited |
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| Details |
Letter Box With Coloured Light Indicator
Utkalika Pattniak, a class X student, from Khurda District of Orrisa was worried about the inconvenience and losses which might occur to the people due to failure in monitoring the letter box content regularly. This failure could result from hectic schedule that people have in their offices and also at times their laziness to open and check the mail-box every day. Her teacher Susama Kumari Patnaik, inspired her to develop a letter box which had clear light signals. Utkalika developed the letterbox in a short while consisting of a base plate, electronic circuit, two LEDs. (viz, green and red) and a three volt battery. When a letter is received in the box it hits the base plate, which in turn completes the electrical circuit resulting in glowing of green light. While, glowing of red light is indicative of letterbox being empty.
Letter box with buzzers are available, in which siren is announced automatically. When a letter is dropped in the box, the circuit is completed. If the arrangement is of such kind that after once announcing, circuit will break automatically; people present at home may collect the letter at their convenience. People may not like the system which makes continuous sound until the letter is removed.
United States Patent 5247282 described a delivery signal and appliance control system. It generates audible or visual signal within a dwelling to indicate that a delivery, such as a newspaper or piece of mail has been deposited in a remote delivery container, such as a mailbox. The system consists of delivery notification switch, control box, electrical wall receptacles and electrical appliances.
Micro Balance
Master Rajkumar Soni, a class IX student, of Narsinghpur (MP) belongs to a traditional jewelry making family. For last several generations, they have been involved in preparing ornaments from gold, silver and other precious metals. Raj thought of developing a weighing balance which is small in size, handy as well as light in weight. He developed a very small size mechanical balance that weighs 8.2 gm and is made of silver. Size of the balance is 24 mm x 38.1 mm. It can accurately weigh precious metals and stones between 0.20 - 2000 mg.Innovator claims to be the youngest person in the world to develop a micro balance and requires only four hours to develop the same.
Micro balances having capacity of 5 -5000 mg with least count of 0.0001-0.01 mg are available in market but these are digital and the costly appliance. (http://balance.balances.com,http:/www. analyticalandprecision.com,http://www. scalesonline.com)
Manually Operated Vaccum Cleaner
Mr Vikas M Waghmode of Ahmadnagar (Maharashtra) has an idea of developing a manually operated vacuum cleaner. The concept involves using kinetic energy produced by pedaling to run the vacuum cleaner. The machine looks like the way shown in figure. The rotary motion of pulley is to be used
to rotate the fan inside the aspirator (sucking-mechanism). When backward curved fan inside the aspirator will rotate with high speed, pressure inside it will result in the creation of the vacuumto suck the dust.
Similar,motorized vacuum cleaners are available in the art (http://inventors.about.com/library/inventors/blvacuum.htm,http://marnanel.org/writing/gasoline-powered-pneumatic-carpet-renovator) but, the idea developed by Mr. Vikas has importance, because apart from cleaning it may also serve as an exercise (health care) machine.
US Patent no. 634,042 described worlds first vacuum cleaner, ‘Gasoline Powered Vacuum Cleaner’ (patented in 1899)
Device for Protection from Rats & Fire Sensor Activated Switch
Mr Nitin Kumar Tyagi, a 12th (science) student from Meerut (UP) was annoyed by the losses/damage caused due to the rats. He could have easily used wide range of chemical poisons that are available in the market to control the rats, but he was aware of the harmful effects that these product have both on the rats and also on the human beings. Hence, he thought of developing such a mechanism of rat control which is not harmful. Further, inspired by his teacher’s suggestions, he developed the repellant using ultra sonic waves to irritate the rats. This repellant operates on electricity. It emits ultrasonic waves in the range of 20-37 KHz, which irritates the rats. According to Master Nitin the pulse frequency of 20-37 KHz helps only repels rats. Human beings are reportedly not affected. The device developed by Nitin costs hardly Rs 250/-.
Sonic and ultrasonic waves are being used as deterrent against birds and animals like rats and moles. (http://pestproducts.com, http://www.alibaba.com)
Rodent repellants patented in USA: US Patent 6,301,194 describes an insect and rodent repellent device which is thermo electrically powered and provides a means for ultrasonically repelling insects and rodents.
Master Tyagi also developed a fire sensor activated switch. Based on the temperature change the signal/alarm is generated which alerts people and this can also be used to operate carbon dioxide cylinder valve or water tank valve in order to extinguish fire. This alarm turns ON when the temperature touches between 45-50°C & automatically starts releasing carbon dioxide to reduce the oxygen supply to fire. This fire sensor device has a thermometer which helps monitoring the temperature and regulating the alarm system. It costs about Rs 250/-.
Automatic fire extinguishers available, they have flame detector sensor which is reported to be more efficient than temperature based sensing mechanism. (http://www.alarmscctv.com, http://www.chiefsupply.com/Fire)
United States Patent 6960987 describes a fire alarm system for connecting a plurality of fire sensors to sensor lines, and giving an alarm in response to fire information output from the fire sensor in a line unit. The fire alarm system includes a current modulation section and an address specification section.
Smokeless Stove With Drier
Ms Remya Jose of Malappuram (Kerala) has developed a smokeless stove with drier. The stove can be used to burn charcoal for getting heat. It consists of trays. The smoke and dust go out through detachable chimney. Three burners attached in the assembly can be used at the same time. Apart from this it has two drying chambers (driers) attached on the rear end of the assembly which, can be utilized for baking bread and biscuits, drying fish, etc.
Miss Jose was awarded presidential award during NIF’s third award function for her washing cum exercise machine (nif.org.in/node/953). Smokeless stoves are available in art but the efforts made by a student to use ambient heat for drying are appreciable.
Minding Money in the Electricity Meter
Mr G Sathish Kumar a class X student from Tamil Nadu was worried about the increasing electricity bill. He thought of an idea of developing such meters, which would show the units consumed in terms of rupees instead of units. According to Satish Kumar his idea would facilitate optimal consumption of the electricity as people will now be more conscious about the activities that consume more money and thus may economize their consumption He further suggested collecting the power tariff amount with the help of pre-paid SIM card. Inbuilt functions in the card will help to cut off power supply based on the balance amount in the SIM card and renew supply after one charges the card. Generally people limit their expenses to the least possible extent when balance left is small (as is evident on cell phone). Power consumption thus might come down.
This idea is already known and such cards are available. |
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| Volume No. |
Honey Bee, 17(1) & (2): 37-38, 2006 |
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