CN2174132Y

CN2174132Y - Electronic alarm for water-boiling

Info

Publication number: CN2174132Y
Application number: CN 93228106
Authority: CN
Inventors: 张义顺
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-07
Filing date: 1993-05-07
Publication date: 1994-08-17
Anticipated expiration: 2003-05-07

Abstract

The utility model relates to an electronic alarm for boiling water. The utility model is composed of a casing, a control circuit board, a sensor and conducting wires, the control circuit board is provided with a control circuit used for treating and conversing the vibration signal of the water boiling, the water boiling vibration can be sensed, the alarm signal is generated, a music integrated sheet is triggered by the alarm signal to generate musical sound after a series of amplification, integration and shaping, the utility model can monitor all cooking utensils with the need of water boiling state alarm on various oven utensils, the sound volume is proper, the installation and the operation are convenient, the interference immunity of the sensor is high, and the durability is favorable.

Description

Electronic alarm for water-boiling

The utility model is a kind of alarm for boiling water that is applied to gas furnace.

At present, the kind of cooker alarm for boiling water can roughly be divided into two classes: the one, and the gas that mechanical type produces when promptly utilizing the water boiling is blowed the tone whistle in the alarm, shortcoming is can only open state to the water in some cookers that this alarm is installed to report to the police, monitoring target is single, and volume is also unsatisfactory; The 2nd, electronic type is about to sensor such as bimetal leaf, semiconductor devices etc. place the water of heating, reports to the police after the perception water temperature reaches 100 ℃, and shortcoming is that foreign matter places water, and is unhygienic, and troublesome poeration, and not durable is not had a Practical significance.

The purpose of this utility model provides a kind of alarm for boiling water that utilizes simple electronic circuit control.

The utility model is by shell 1, control circuit board 2, and sensor 3 and lead 4 are formed, and control circuit board 2 is surrounded by shell 1.

Set handling on the control circuit board 2, conversion water are driven the control circuit that vibration signal is about to become after this signal amplification, integration, the shaping music signal, it is by sensor 3, four high guaily unit,

triode

19,20, music integrated chip 13, light emitting diode 18, loudspeaker 14, electric capacity 11,

resistance

5,6,7,8,9,10,12,15,25, switch 16, power supply 17 is formed by connecting, the different connections of utilization and resistance, electric capacity, and four high guaily unit has been formed two

operational amplifiers

23,24, one integrator, 22, one comparators 21.

Vibration before the boiling of the utility model energy perception water, produce alarm signal, through a series of amplifications, integration, shaping, trigger music integrated chip and send musical sound, can monitor the need that heat and report any cooker of water fluidized state on all kinds stove and accessory, volume is moderate, installation, easy to use, and the sensor strong interference immunity, durability is good.

Describe in detail below in conjunction with accompanying drawing: Fig. 1 is a structural representation of the present utility model, Fig. 2 is circuit theory diagrams of the present utility model, 1 shell among the figure, 2 control circuit boards, 3 sensors, 4 leads, 5,6,7,8,9,10,12,15,25 resistance, 11 electric capacity, 13 music integrated chips, 14 loudspeakers, 16 switches, 17 power supplys, 18 light emitting diodes, 19,20 triodes, 21 comparators, 22 integrators, 23,24 operational amplifiers, when switch 16 of the present utility model disconnected, electric capacity 11 was in the reverse charging state, to guarantee using closed a switch beginning at 16 o'clock, music integrated chip 13 is not triggered, promptly do not have musical sound and send, after switch 16 closed, light emitting diode 18 was luminous, entire circuit enters monitoring state, the vibration of heated water is by sensor 3 perception in the cooker, and imports operational amplifier 24 into, 23, carry out secondary and amplify, pass through the integration of integrator 22 again, when voltage reached certain numerical value, a certain haptic element of comparator 21 became electronegative potential, then turn-offs triode 20, the colelctor electrode of triode 20 becomes high level, trigger music integrated chip 13 and send music signal,, drive loudspeaker 14 and send the musical sound warning through the amplification of triode 19.

It is as follows to lift a most preferred embodiment: sensor φ 27 piezoelectric ceramic pieces, four high guaily unit LM324, triode is 9013, music integrated chip is KD-153H, and loudspeaker is 0.1W, 8 Ω loudspeakers, effective φ 3 light emitting diodes of light-emitting diodes, electric capacity is 10 μ F electrochemical capacitors, and resistance is the fixed carbon resister of 1/8W, and power supply can save No. 5 batteries with two.

Claims

1, a kind of by shell, control circuit board, the electronic type alarm for boiling water that sensor and lead are formed is characterized in that: set handling, conversion water are driven the control circuit of vibration signal on the control circuit board.

2, electronic type alarm for boiling water as claimed in claim 1 is characterized in that: control circuit is by sensor, four high guaily unit, and triode, music integrated chip, light emitting diode, loudspeaker, electric capacity, resistance, switch, power supply is formed by connecting.

3, electronic type alarm for boiling water as claimed in claim 2 is characterized in that: the four high guaily unit in the control circuit i.e. two operational amplifiers, an integrator, a comparator.