Summary of the invention
The present invention be overcome the deficiencies in the prior art and provide a kind of can be directly stepless the detection electric pressure cooking saucepan in pressure, the pressure detection control device of a kind of electric pressure cooking saucepan that accuracy of detection is high.
In order to achieve the above object, the present invention realizes like this, it is a kind of pressure detection control device of electric pressure cooking saucepan, comprise be located on the wiring board for following apparatus provides the direct supply of direct-current working volts, switchgear, warning device, key device, pressure-detecting device, display drive apparatus, display device and the micro treatmenting device of control electric heating device, the signal that micro treatmenting device receives key device and pressure-detecting device is respectively handled the back and signal is inputed to switchgear control electric heating device, display drive apparatus and warning device respectively; It is characterized in that: described pressure-detecting device comprises the extraordinary hall sensing device that is located on the outer pot, extraordinary hall sensing device is electrically connected with direct supply and micro treatmenting device on the wiring board by lead, the corresponding magnetic of device is answered in the position and the impression of extraordinary Hall that are located on the pot cover handle, be fixed on the orienting sleeve on the pot cover, being located in the orienting sleeve can axially movable moving body, one end is fixed on the moving body top other end and the fixing connecting rod of magnetic, is set in orienting sleeve outer the soft rubber cover and the back-moving spring between moving body and handle that play sealing and impetus.
The upper end of described connecting rod is fork-shaped, and the centre that is positioned at fork-shaped on pot cover is provided with one makes the directed guidepost that moves of connecting rod.
Described pressure-detecting device also comprises the 4th resistance and the 5th resistance; Described extraordinary hall sensing device model is 503, and it has three legs, and its 1 pin connects direct supply by the 4th resistance, its 2 pin ground connection; The 5th resistance one termination direct supply, other end ground connection; Its 3 pin connects a pin of micro treatmenting device.
The present invention's advantage compared with prior art is can realize the pressure in minute lid formula or the direct stepless detection electric pressure cooking saucepan of cover linking type electric pressure cooking saucepan, and precision to be high.
Embodiment
Below in conjunction with drawings and Examples the present invention is done further detailed description:
Shown in Fig. 1 to 13, it is a kind of pressure detection control device of electric pressure cooking saucepan, comprise be located on the wiring board for following apparatus provides the direct supply of direct-current working volts, switchgear, warning device, key device, pressure-detecting device, display drive apparatus, display and the micro treatmenting device of control electric heating device, the signal that micro treatmenting device receives key device and pressure-detecting device is respectively handled the back and signal is inputed to switchgear control electric heating device, display drive apparatus and warning device respectively; Characteristics of the present invention are: pressure-detecting device comprises the extraordinary hall sensing device 7 that is located on the outer pot 3, extraordinary hall sensing device 7 is electrically connected with direct supply and micro treatmenting device on the wiring board by lead 8, be located at position and the corresponding magnetic 6 of extraordinary hall sensing device on the pot cover handle 2, be fixed on the orienting sleeve 10 on the pot cover 1, being located in the orienting sleeve can axially movable moving body 11, one end is fixed on the moving body top other end and the fixing connecting rod 4 of magnetic, is set in orienting sleeve outer the soft rubber cover 9 and the back-moving spring 12 between moving body and handle 2 that play sealing and impetus.During use, when the pressure in the electric pressure cooking saucepan increases, steam up pushes up soft rubber cover 9, this moment, moving body 11 up moved thereupon, connecting rod 4 is being with magnetic 6 also up to move, extraordinary hall sensing device 7 is sensed the change in location of magnetic and this signal is inputed to micro treatmenting device, after being handled by micro treatmenting device this signal is inputed to warning device and key device and demonstration, has reached the purpose of pressure measurement and control.
In the present embodiment, the upper end of connecting rod 4 is fork-shaped, and the centre that is positioned at fork-shaped on pot cover 1 is provided with one makes the directed guidepost 5 that moves of connecting rod.
In the present embodiment, pressure-detecting device also comprises the 4th resistance R 4 and the 5th resistance R 5; Extraordinary hall sensing device 7 models are 503, and it has three legs, and its 1 pin connects direct supply by the 4th resistance, its 2 pin ground connection; The 5th resistance one termination direct supply, other end ground connection; Its 3 pin connects a pin of micro treatmenting device.
In the present embodiment, micro treatmenting device comprises little processing integrated package CPU, crystal X and the 13 resistance R 13; The model of little processing integrated package is JS9068, and it has 20 legs, 1 pin ground connection wherein, and 20 pin connect direct supply, and 8 pin are by the 13 resistance R 13 ground connection, and crystal X is connected between 2,3 pin, and 15 pin connect 3 pin of extraordinary Hall sensor device 7.
In the present embodiment, warning device comprises the first triode Q1, first resistance R 1 and loudspeaker Y; The base stage of first triode connects 17 pin of little processing integrated package CPU by first resistance R 1, grounded emitter, and collector connects direct supply by loudspeaker Y.
In the present embodiment, switchgear comprises the relay J K of the second triode Q2, the 3rd resistance R 3, the 6th diode D6 and band normally opened contact, the base stage of the second triode Q2 connects 16 pin of little processing integrated package CPU by the 3rd resistance R 3, grounded emitter, collector connects direct supply by the 6th diode D6 and relay J K respectively, and the normally opened contact of relay J K is connected with electric heating device RL.
In the present embodiment, display drive apparatus comprises the 14 to the 17 resistance R 14-R17, the 7th diode D7, the 7th capacitor C 7, the 8th capacitor C 8 and demonstration integrated package IC1, the model that shows integrated package IC1 is SC1628, it has 28 pin, its 1 pin is by the 17 resistance R 17 ground connection, 2,3,4 pin meet 5 of little processing integrated package CPU respectively, 6,7 pin, the 7th diode D7 one termination direct supply, another termination the 14 resistance R 14, the 15 resistance R 15, one end of the 16 resistance R 16,14 resistance R 14, the 15 resistance R 15, the other end of the 16 resistance R 16 connects respectively and shows 4 of integrated package IC1,3,2 pin, the 8th capacitor C 8 is connected on and shows 21 of integrated package IC1, between 22 pin, 22,28 pin ground connection.
In the present embodiment, the model of display is DB-
, having 16 pin, its 1 to 7 pin connects 27,26,24,23,20,19,18 pin that show integrated package IC1 respectively, and its 9 to 16 pin connects 15,18,19,20,14,13,12,11,10,9,8 pin that show integrated package IC1 respectively.
In the present embodiment, key device comprises that the output terminal of first button to the, six button SW1-SW6, the 7th resistance to the 12 resistance R 12, the first buttons to the six buttons connects 9,14,19,18,11,10 pin of little processing integrated package CPU respectively.
In the present embodiment, the direct supply bridge rectifier, second capacitor C, 2 to the 5th capacitor C 5, the 5th diode D5 and the three-terminal regulator block WZ that comprise fuse RJ1-RJ2, adjustable resistance RT1, transformer B, constitute by the first diode D1 to the, four diode D4.
In the present embodiment, also comprise the weight switch device, it comprises the weight switch K and second resistance R 2, and 2 pin of weight switch K connect 13 pin of little processing integrated package, and its 1 pin is by second resistance R, 2 ground connection.
In the present embodiment, also comprise temperature-detecting device, this device comprises the 6th resistance, the 6th capacitor C 6 and temperature sensor RT2, the 2 pin ground connection of temperature sensor RT2, its 1 pin connects direct supply by the 6th resistance R 6, this 1 pin connects 12 pin of little processing integrated package, and the 6th electric capacity is connected between 1,2 pin.