CN101520316B - Pressure displacement measure and control device of electrothermal pressure kitchenware and pressure measure and control method thereof - Google Patents

Pressure displacement measure and control device of electrothermal pressure kitchenware and pressure measure and control method thereof Download PDF

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Publication number
CN101520316B
CN101520316B CN200910106182XA CN200910106182A CN101520316B CN 101520316 B CN101520316 B CN 101520316B CN 200910106182X A CN200910106182X A CN 200910106182XA CN 200910106182 A CN200910106182 A CN 200910106182A CN 101520316 B CN101520316 B CN 101520316B
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China
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pressure
displacement
wheel
gear train
electric heating
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CN101520316A (en
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陈先鄂
黄尧坤
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Zhejiang ASD Domestic Electrical Appliance Co Ltd
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Zhejiang Taizhou Aishida Electrical Equipment Co Ltd
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Abstract

The invention relates to a pressure displacement measure and control device of an electrothermal pressure kitchenware and a pressure measure and control method thereof. The pressure displacement measure and control device of the electrothermal pressure kitchenware comprises a support plate, a raster mechanism, a pair of photrons, a transmission mechanism and a control circuit, wherein the surface of the support plate is concavely provided with a caulking groove, the lateral edge of the caulking groove is vertically provided with a support frame; the raster mechanism is arranged in the caulkinggroove; the photrons are symmetrically arranged at a position of the raster mechanism, which corresponds to the support plate and can induce reflection rays; one end of the transmission mechanism is connected with the raster mechanism, and the other end is connected with a transmission component contacted with a displacement sensing part inside a pan of the electrothermal pressure kitchenware; the control circuit is used for transforming the displacement of the pan inside the electrothermal pressure kitchenware into a raster signal and then processing the raster signal and sending the raster signal to a singlechip to obtain pressure real-time information; the transmission component of the transmission mechanism amplifies the displacement amount which is generated in such a way that the pan inside the resilient sealing electrothermal pressure kitchenware is pressed, and transforms the displacement into rotating displacement to enable the raster mechanism to obtain a displacement signalof the pan inside the electrothermal pressure kitchenware; the control circuit processes the displacement signal and sends the displacement signal to the singlechip, and the singlechip controls a hea ting system of the electrothermal pressure kitchenware according to pressure.

Description

The pressure displacement detecting and controlling device of electric heating pressure cooker and pressure testing and controlling method thereof
Technical field
The present invention relates to a kind of pressure displacement detecting and controlling device and pressure testing and controlling method thereof of electric heating pressure cooker.
Background technology
CN200510100475.9 open " a kind of pressure detection method of electric pressure cooking saucepan and pick-up unit ".Its purpose provides a kind of pot deflection within the continuity gaging pressure pot that passes through, thereby can the accurate method and apparatus that detects, controls the pot inner pressure of electric pressure cooking saucepan in continuity ground.Its technology constitutes: the pressure detection method of described electric pressure cooking saucepan, and adopt strainometer as detection means, strainometer is placed on a certain appropriate location in space between pressure cooker shell and the interior pot, and utilizes a transmission arm, the swell increment of pot in the perception; When interior pot during because of high compression swelling, transmission arm is converted to a displacement with interior pot swell increment, and the elastic matrix that promotes strainometer correspondingly is out of shape; The strainometer elastic matrix of distortion also changes the electrical characteristics of adhering to the responsive foil on it thereupon; The controlled electric signal that produces because of electrical property change flows to central controller; Central controller gives computing to the electric signal that receives, output control signal and shows signal.The pressure-detecting device of described electric pressure cooking saucepan, a certain appropriate location, space between pressure cooker shell and interior pot is provided with strainometer and transmission arm; One end of transmission arm directly contacts with interior pot outer surface or heat-generating disc bottom surface, and the other end directly contacts with the elastic matrix of strainometer; Strainometer is electrically connected with the central controller of pressure cooker.Its weak point is: the difficulty of adjusting, be subject to disturb, and also exist and will carry out problems such as creep compensation and temperature compensation.
CN200720055636.1 has announced a kind of " pressure-detecting device of electric pressure cooking saucepan ".Its purpose provides that a kind of heat resistance is good, the displacement of interior pot that again can be by the continuous coverage electric pressure cooking saucepan come the device of continuous detecting, control electric pressure cooking saucepan pot inner pressure.Its technology constitutes: the pressure-detecting device of described electric pressure cooking saucepan, comprise central controller, it is characterized in that: between the heating plate of electric pressure cooking saucepan and shell, slide resistor is set, described slide resistor comprises sliding resistance body and the sliding electrode that slides on sliding resistance body, described slide resistor is electrically connected with described central controller; Between the heating plate of slide resistor and electric pressure cooking saucepan, transmission arm is set.Its weak point is: the difficulty of adjusting, wearing and tearing easily.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point of the prior art, provide a kind of need not to adjust, assembling is simple, the pressure displacement detecting and controlling device of the electric heating pressure cooker of no drift, nothing decay, good reliability.Another object of the present invention provides a kind of electric heating pressure cooker pressure testing and controlling circuit that cooperates above-mentioned displacement detecting and controlling device.Present inventor's a purpose again provides a kind of pressure testing and controlling method of the System Controlled by Measuring Pressure that is made of the pressure displacement detecting and controlling device and the telemetry circuit of above-mentioned electric heating pressure cooker.
Purpose of the present invention can reach by following measure:
The pressure displacement detecting and controlling device of this electric heating pressure cooker comprises the electric heating pressure cooker, and its special character is, comprises:
One support plate, its plate face are offered a caulking groove that supplies grating mechanism, gear train to be arranged with first, the perpendicular support that is convexly equipped with in the long edge, limit of one;
One grating mechanism is located in the support plate caulking groove;
A pair of photron comprises light-emitting tube, light-receiving to pipe, and described light-emitting tube and light-receiving are symmetrically set in the grating mechanism of being installed in the support plate caulking groove to pipe can respond to the support plate corresponding position that passes grating light;
One gear train, the one end is connected with grating mechanism, and its other end produces the driving member connection that downward displacement sensing spare is connected down with the effect of electric heating pressure cooker pot inner pressure;
One control circuit is used for a pot displacement in the electric heating pressure cooker is become behind the displacement signal its processing, sends into single-chip microcomputer to obtain the pressure instant messages;
The driving member of described gear train amplifies the displacement that pot pressurized in the resilient seal electric heating pressure cooker produces, and will be converted to swing offset through the transmission of gear train, makes grating mechanism obtain the displacement signal of pot in the electric heating pressure cooker; Control circuit is sent into single-chip microcomputer after this signal is handled, and Single Chip Microcomputer (SCM) program is controlled electric heating pressure cooker heating system according to pressure.
Described grating mechanism forms along the grating hole of evenly laying with grating wheel, this grating wheel wheel periphery of the coaxial closed assembly gear of gear train by one; The radius of described grating wheel is greater than the reference radius of its in-line gears.
Described grating mechanism is by protrude out the lever sectional wheel that pivot articulates in the middle of the support plate caulking groove, this lever sectional wheel wheel periphery is along the grating hole of evenly laying, be provided with between the lever sectional wheel wheel body between this lever sectional wheel pivot and the lever sectional wheel grating hole and the corresponding edge of support plate caulking groove and eliminate the set flexible member in driving-chain gap, the extension rod that the other end in the relative grating of this lever sectional wheel wheel shaft hole extends from the outside one of pivot, the gear train driving member that this extension rod top is connected is formed; Distance between described lever sectional wheel pivot center and the center, lever sectional wheel grating hole articulates or touches the distance at center to described gear train driving member and extension rod greater than lever sectional wheel pivot center.
Described gear train driving member and extension rod connected mode be for articulating, and promptly the two ends of gear train driving member articulate the generation effect of electric heating pressure cooker pot inner pressure under respectively in the caulking groove of the sensing part of bottom offset, extension rod end.
Described gear train driving member and extension rod connected mode be for touching, and promptly the two ends of gear train driving member touch respectively in the pit that is arranged with on sensing part from the effect of electric heating pressure cooker pot inner pressure to bottom offset that produce under, the extension rod end end face.
Described gear train is by protrude out the lever sectional wheel that pivot articulates in the middle of the support plate caulking groove, this lever sectional wheel wheel periphery is along the gear teeth that are provided with, the extension rod that the other end of the relative gear teeth of this lever sectional wheel extends from the outside one of pivot, the gear train driving member that this extension rod top is connected, this lever sectional wheel wheel that increment meshed with the gear coaxial closed assembly of grating wheel, the radius of described grating wheel is greater than the reference radius of its in-line gears, the support that is convexly equipped with perpendicular to the caulking groove edge between the gear of support plate caulking groove side and grating wheel wheel shaft and coaxial closed assembly and the lever sectional wheel gear teeth, be connected to the coaxial closed assembly gear of grating wheel outer end axle and cantilever tip face on be used to eliminate the set hairspring spring in total driving-chain gap and form.
Described gear train driving member and extension rod connected mode be for articulating, and promptly the two ends of gear train driving member articulate the generation effect of electric heating pressure cooker pot inner pressure under respectively in the caulking groove of the sensing part of bottom offset, extension rod end.
Described gear train driving member and extension rod connected mode be for touching, and promptly the two ends of gear train driving member touch respectively in the pit that is arranged with on sensing part from the effect of electric heating pressure cooker pot inner pressure to bottom offset that produce under, the extension rod end end face; Described lever sectional wheel pivot center and lever quadrant tooth reference radius articulate or touch the distance at center to described gear train driving member and extension rod greater than lever sectional wheel pivot center.
Described gear train is by the gear wheel of a coaxial closed assembly, pinion wheel, that its gear wheel meshed and the gear coaxial closed assembly of grating mechanism, the radius of the grating wheel of described grating mechanism is greater than the reference radius of its in-line gears, and its pinion and the effect of electric heating pressure cooker inner pot pressure produce the tooth bar that downward displacement sensing spare touches down, the support that between support plate caulking groove side and grating mechanism wheel shaft and gear train wheel shaft, is convexly equipped with perpendicular to the caulking groove edge, be connected to grating mechanism coaxial closed assembly gear outer end axle and cantilever tip face on eliminate the set hairspring spring in total driving-chain gap and form.
The driving member of described gear train is a push rod.
The driving member of described gear train is a tooth bar.
Described control circuit comprises: single-chip microcomputer, shaping circuit, resistance, triode, relay, light-emitting tube, light-receiving are to pipe, electric hot tray, wherein: shaping circuit obtains light-receiving to pipe signal amplification, shaping, obtaining the dephased incremental encoding pulse signal of two-way sends into single-chip microcomputer and counts processing, triode Q grounded emitter, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the collector of triode Q controls electric hot tray through relay.
Purpose of the present invention can also reach by following measure:
The pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device, its special character is that program initialization may further comprise the steps:
(1) inlet (step 101) that powers on;
(2) initialize routine (step 102);
(3) fault detect (step 103);
(4) detection failure is absolute addressing mode (step 104);
(5) if the testing result of step 104 is for being then to read encoded radio and do to enter working cycle (step 107) after the initial pressure value (step 105);
(6) if the testing result of step 104 for not, then with 0 as entering working cycle (step 107) after the initial pressure value (step 106).
Purpose of the present invention can also reach by following measure:
The pressure displacement detecting and controlling device of this electric heating pressure cooker and pressure testing and controlling method thereof, its special character is, may further comprise the steps:
(1) pressure interrupts or inquiry inlet (step 201);
(2) signal handler (step 202);
(3) whether detect absolute addressing mode (step 203);
(4) if the testing result of step 203 is for being then to read specific coding value (step 204);
(5) return (step 210) with the zero-pressure value after relatively drawing current pressure value (step 205);
(6) if the testing result of step 203 is not, then further detection has or not pressure to change (step 206);
(7) further whether detection is supercharging (step 207);
(8) if the testing result of step 207 is for being that then the current pressure value cell returns (step 210) after adding an increment (step 208);
(9) if the testing result of step 207 is that then the current pressure value cell does not return (step 210) after subtracting an increment (step 209).
The present invention has following advantage compared to existing technology:
1, installs easily, need not adjust.
2, do not have drift, do not have decay.
3, anti-interference, good reliability.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of pressure displacement detecting and controlling device of electric heating pressure cooker of the present invention.
Fig. 2 is the structural representation that second kind of embodiment of pressure displacement detecting and controlling device, gear train driving member and the extension rod of electric heating pressure cooker of the present invention articulates connected mode.
Fig. 3 is the structural representation that second kind of embodiment of pressure displacement detecting and controlling device, gear train driving member and the extension rod of electric heating pressure cooker of the present invention touches connected mode.
Fig. 4 is the third embodiment gear train driving member of pressure displacement detecting and controlling device of electric heating pressure cooker of the present invention and the structural representation that extension rod articulates connected mode.
Fig. 5 is the third embodiment gear train driving member of pressure displacement detecting and controlling device of electric heating pressure cooker of the present invention and the structural representation that extension rod touches connected mode.
Fig. 6 is the pressure testing and controlling circuit diagram of the pressure displacement detecting and controlling device of electric heating pressure cooker of the present invention.
Fig. 7 is a programmed control theory diagram of the present invention.
Fig. 8 is the process flow diagram of initialize routine of the present invention.
Fig. 9 is the process flow diagram of program of the present invention.
Embodiment
The present invention is further detailed in conjunction with the accompanying drawings below:
Fig. 1, Fig. 6, Fig. 7, Fig. 8, Fig. 9 show first embodiment of the present invention.
See also shown in Figure 1ly, in the present embodiment, the pressure displacement detecting and controlling device of described electric heating pressure cooker comprises that the electric heating pressure cooker comprises:
One support plate 1, its plate face are offered a caulking groove 11 that supplies grating mechanism, gear train to be arranged with first, the perpendicular support 12 that is convexly equipped with in the long edge, limit of one;
One grating wheel 2 is located in the support plate caulking groove 11;
A pair of photron comprises light-emitting tube 31, light-receiving to managing 32, and described light-emitting tube 32 and light-receiving are symmetrically set in the grating wheel of being installed in the support plate caulking groove 11 2 and can respond to support plate 1 corresponding position that passes grating light managing 33;
One gear train 4, the one end is connected with grating wheel 2, and its other end produces tooth bar 41 connections that downward displacement sensing spare is connected down with the effect of electric heating pressure cooker pot inner pressure;
One control circuit is used for a pot displacement in the electric heating pressure cooker is become behind the displacement signal its processing, sends into single-chip microcomputer to obtain the pressure instant messages;
The tooth bar 41 of described gear train amplifies the displacement that pot pressurized in the resilient seal electric heating pressure cooker produces by the transmission of gear train 4, and will be converted to swing offset through the transmission of gear train, make grating wheel 2 obtain the displacement signal of pot in the electric heating pressure cooker; Control circuit is sent into single-chip microcomputer after this signal is handled, and Single Chip Microcomputer (SCM) program is controlled electric heating pressure cooker heating system according to pressure.
Described grating wheel 2 is formed along the grating hole 22 of evenly laying with grating wheel 21, these grating wheel 21 wheel peripheries of the coaxial closed assembly gear of gear train by one; The radius of described grating wheel 2 is greater than the reference radius of its in-line gears 44.
Described gear train 4 is by the gear wheel 42 of a coaxial closed assembly, pinion wheel 43, its gear wheel 42 gear 44 with grating wheel 2 coaxial closed assemblies that meshed, its pinion wheel 43 engagements produce the tooth bar 41 that downward displacement sensing spare touches down with the effect of electric heating pressure cooker pot inner pressure, be positioned at the gear wheel 42 of support plate caulking groove 11 sides and grating wheel 2 wheel shafts and coaxial closed assembly, the support 12 that is convexly equipped with perpendicular to caulking groove 11 edges between pinion wheel 43 wheel shafts, be connected to the coaxial closed assembly gear 44 outer end axles 441 of grating wheel 2 and support 12 top end faces on be used to eliminate the set hairspring spring in total driving-chain gap 5 and form.
See also shown in Figure 6, described control circuit comprises: single-chip microcomputer, shaping circuit, resistance, triode, relay, light-emitting tube, light-receiving are to pipe, electric hot tray, wherein: shaping circuit obtains light-receiving to pipe signal shaping, obtaining the dephased incremental encoding pulse signal of two-way sends into single-chip microcomputer and counts processing, triode Q grounded emitter, monolithic one delivery outlet machine is through the base stage of resistance R 3 access triode Q, and the collector of triode Q controls electric hot tray through relay.
See also shown in Figure 7, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device, program initialization may further comprise the steps:
(1) inlet (step 101) that powers on;
(2) initialize routine (step 102);
(3) fault detect (step 103);
(4) detection failure is absolute addressing mode (step 104);
(5) if the testing result of step 104 is for being then to read encoded radio and do to enter working cycle (step 107) after the initial pressure value (step 105);
(6) if the testing result of step 104 for not, then with 0 as entering working cycle (step 107) after the initial pressure value (step 106).
See also Fig. 8, shown in Figure 9, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device may further comprise the steps:
(1) pressure interrupts or inquiry inlet (step 201);
(2) signal handler (step 202);
(3) whether detect absolute addressing mode (step 203);
(4) if the testing result of step 203 is for being then to read specific coding value (step 204);
(5) return (step 210) with the zero-pressure value after relatively drawing current pressure value (step 205);
(6) if the testing result of step 203 is not, then further detection has or not pressure to change (step 206);
(7) further whether detection is supercharging (step 207);
(8) if the testing result of step 207 is for being that then the current pressure value cell returns (step 210) after adding an increment (step 208);
(9) if the testing result of step 207 is that then the current pressure value cell does not return (step 210) after subtracting an increment (step 4064).
Fig. 2, Fig. 3, Fig. 6, Fig. 7, Fig. 8, Fig. 9 show second embodiment of the present invention.
See also shown in Figure 2ly, in the present embodiment, the pressure displacement detecting and controlling device of described electric heating pressure cooker comprises that the electric heating pressure cooker comprises:
One support plate 1, its plate face are offered a caulking groove 11 that supplies grating mechanism, gear train to be arranged with first;
One grating wheel 2 is located in the support plate caulking groove 11;
One gear train 4, the one end is connected with grating wheel 2, and its other end produces push rod 41 connections that downward displacement sensing spare is connected down with the effect of electric heating pressure cooker pot inner pressure;
A pair of photron comprises light-emitting tube 31, light-receiving to managing 32, and described light-emitting tube 32 and light-receiving are symmetrically set in the grating wheel of being installed in the support plate caulking groove 11 2 and can respond to support plate 1 corresponding position that passes grating light managing 33;
One control circuit is used for a pot displacement in the electric heating pressure cooker is become behind the displacement signal its processing, sends into single-chip microcomputer to obtain the pressure instant messages;
The push rod 41 of described gear train amplifies the displacement that pot pressurized in the resilient seal electric heating pressure cooker produces through the transmission of gear train, and is converted to swing offset, thereby obtains the displacement signal of pot in the electric heating pressure cooker; Control circuit is sent into single-chip microcomputer after its signal is handled, and Single Chip Microcomputer (SCM) program is controlled electric heating pressure cooker heating system according to pressure.
Described grating wheel 2 is by protrude out the lever sectional wheel 21 that pivot 12 articulates in the middle of support plate caulking groove 11, these lever sectional wheel 21 wheel peripheries are along the grating hole 22 of evenly laying, be provided with between the corresponding edge of the lever sectional wheel wheel body 21 between this lever sectional wheel pivot 12 and the lever sectional wheel grating hole 22 and support plate caulking groove 11 and eliminate the set spring 5 in total driving-chain gap, the extension rod 23 that the other end in the relative grating of these lever sectional wheel 2 wheel shafts hole 22 extends from pivot 12 outside one, the gear train push rod 41 that these extension rod 23 tops are connected is formed.
See also shown in Figure 2ly, described gear train push rod 41 and extension rod 23 connected modes: the two ends of gear train push rod 41 articulate the generation effect of electric heating pressure cooker pot inner pressure under respectively in the caulking groove 231 of the sensing part (not shown) of bottom offset, extension rod 23 ends.
See also shown in Figure 3ly, described gear train push rod 41 and extension rod 23 connected modes: the two ends of gear train push rod 41 touch respectively in the pit 24 that the generation effect of electric heating pressure cooker pot inner pressure under is arranged with on the sensing part (not shown) of bottom offset, extension rod 23 end end faces; Distance between described lever sectional wheel 21 pivot center and 22 centers, lever sectional wheel grating hole articulates or touches the distance at center to described gear train push rod 41 and extension rod 23 greater than lever sectional wheel 21 pivot center.
See also shown in Figure 6, described control circuit comprises: single-chip microcomputer, shaping circuit, resistance, triode, relay, light-emitting tube, light-receiving are to pipe, electric hot tray, wherein: shaping circuit obtains light-receiving to pipe signal shaping, obtaining the dephased incremental encoding pulse signal of two-way sends into single-chip microcomputer and counts processing, triode Q grounded emitter, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the collector of triode Q controls electric hot tray through relay.
See also shown in Figure 7, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device, program initialization may further comprise the steps:
(1) inlet (step 101) that powers on;
(2) initialize routine (step 102);
(3) fault detect (step 103);
(4) detection failure is absolute addressing mode (step 104);
(5) if the testing result of step 104 is for being then to read encoded radio and do to enter working cycle (step 107) after the initial pressure value (step 105);
(6) if the testing result of step 104 for not, then with 0 as entering working cycle (step 107) after the initial pressure value (step 106).
See also Fig. 8, shown in Figure 9, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device may further comprise the steps:
(1) pressure interrupts or inquiry inlet (step 201);
(2) signal handler (step 202);
(3) whether detect absolute addressing mode (step 203);
(4) if the testing result of step 203 is for being then to read specific coding value (step 204);
(5) return (step 210) with the zero-pressure value after relatively drawing current pressure value (step 205);
(6) if the testing result of step 203 is not, then further detection has or not pressure to change (step 206);
(7) further whether detection is supercharging (step 207);
(8) if the testing result of step 207 is for being that then the current pressure value cell returns (step 210) after adding an increment (step 208);
(9) if the testing result of step 207 is that then the current pressure value cell does not return (step 210) after subtracting an increment (step 209).
Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 show the 3rd embodiment of the present invention.
See also shown in Figure 4ly, in the present embodiment, the pressure displacement detecting and controlling device of described electric heating pressure cooker comprises that the electric heating pressure cooker comprises:
One support plate 1, its plate face are offered a caulking groove 11 that supplies grating mechanism, gear train to be arranged with first;
One grating wheel 2 is located in the support plate caulking groove 11;
A pair of photron comprises light-emitting tube 31, light-receiving to managing 32, and described light-emitting tube 32 and light-receiving are symmetrically set in the grating wheel of being installed in the support plate caulking groove 11 2 and can respond to support plate 1 corresponding position that passes grating light managing 33;
One gear train 4, the one end is connected with grating wheel 2, and its other end produces push rod 41 connections that downward displacement sensing spare is connected down with the effect of electric heating pressure cooker pot inner pressure;
One control circuit is used for a pot displacement in the electric heating pressure cooker is become behind the displacement signal its processing, sends into single-chip microcomputer to obtain the pressure instant messages;
The push rod 41 of described gear train 4 amplifies the displacement that pot pressurized in the resilient seal electric heating pressure cooker produces, and will be converted to swing offset through the transmission of gear train 4, makes grating wheel 2 obtain the displacement signal of pot in the electric heating pressure cooker; Control circuit is sent into single-chip microcomputer after its signal is handled, and Single Chip Microcomputer (SCM) program is controlled electric heating pressure cooker heating system according to pressure.
Described grating wheel 2 is formed along the grating hole 22 of evenly laying with grating wheel 21, these grating wheel 21 wheel peripheries of the coaxial closed assembly gear of gear train by one; Grating hole 22 radius centered of described grating wheel 2 are greater than the reference radius of its in-line gears 47.
Described gear train 4 is by protrude out the lever sectional wheel 45 that pivot 12 articulates in the middle of support plate caulking groove 11, these lever sectional wheel 45 wheel peripheries are along the gear teeth 451 that are provided with, the extension rod 46 that the other end of these lever sectional wheel 45 relative gear teeth 451 extends from pivot 12 outside one, the gear train push rod 41 that these extension rod 46 tops are connected, these lever sectional wheel gear teeth 451 ends that meshed with gears 47 grating wheel 2 coaxial 471 closed assemblies, 451 supports 12 that are convexly equipped with perpendicular to caulking groove 11 edges between the gear 47 of support plate caulking groove 11 sides and grating wheel 2 wheel shafts and coaxial closed assembly and lever sectional wheel 45 gear teeth, be connected to the coaxial closed assembly gear 47 outer end axles 471 of grating wheel 2 and support 12 top end faces on be used to eliminate the set hairspring spring in total driving-chain gap 5 and form.
See also shown in Figure 4ly, described gear train push rod 41 and extension rod 23 connected modes: the two ends of gear train push rod 41 articulate the generation effect of electric heating pressure cooker pot inner pressure under respectively in the caulking groove 231 of the sensing part (not shown) of bottom offset, extension rod 23 ends.
See also shown in Figure 5ly, described gear train push rod 41 and extension rod 23 connected modes: the two ends of gear train push rod 41 touch respectively in the pit 24 that the generation effect of electric heating pressure cooker pot inner pressure under is arranged with on the sensing part (not shown) of bottom offset, extension rod 23 end end faces; The reference radius of described lever sectional wheel 45 teeth articulates or touches the distance at center to described gear train push rod 41 and extension rod 46 greater than lever sectional wheel 45 pivot center.
See also shown in Figure 6, described control circuit comprises: single-chip microcomputer, shaping circuit, resistance, triode, relay, light-emitting tube, light-receiving are to pipe, electric hot tray, wherein: shaping circuit obtains light-receiving to pipe signal shaping, obtaining the dephased incremental encoding pulse signal of two-way sends into single-chip microcomputer and counts processing, triode Q grounded emitter, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the collector of triode Q controls electric hot tray through relay.
See also shown in Figure 7, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device, program initialization may further comprise the steps:
(1) inlet (step 101) that powers on;
(2) initialize routine (step 102);
(3) fault detect (step 103);
(4) detection failure is absolute addressing mode (step 104);
(5) if the testing result of step 104 is for being then to read encoded radio and do to enter working cycle (step 107) after the initial pressure value (step 105);
(6) if the testing result of step 104 for not, then with 0 as entering working cycle (step 107) after the initial pressure value (step 106).
See also Fig. 8, shown in Figure 9, the pressure testing and controlling method of this electric heating pressure cooker displacement detecting and controlling device may further comprise the steps:
(1) pressure interrupts or inquiry inlet (step 201);
(2) signal handler (step 202);
(3) whether detect absolute addressing mode (step 203);
(4) if the testing result of step 203 is for being then to read specific coding value (step 204);
(5) return (step 210) with the zero-pressure value after relatively drawing current pressure value (step 205);
(6) if the testing result of step 203 is not, then further detection has or not pressure to change (step 206);
(7) further whether detection is supercharging (step 207);
(8) if the testing result of step 207 is for being that then the current pressure value cell returns (step 210) after adding an increment (step 208);
(9) if the testing result of step 207 is that then the current pressure value cell does not return (step 210) after subtracting an increment (step 209).
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.

Claims (1)

1. the pressure displacement detecting and controlling device of an electric heating pressure cooker comprises the electric heating pressure cooker, it is characterized in that, the pressure displacement detecting and controlling device of described electric heating pressure cooker comprises:
One support plate, this support plate plate face one side are offered a caulking groove that supplies grating mechanism, gear train to be arranged with;
One grating wheel is located in the support plate caulking groove; One gear train, this gear train one end is connected with grating wheel, and this gear train other end produces the push rod connection that downward displacement sensing spare is connected down with the effect of electric heating pressure cooker pot inner pressure;
A pair of photron comprises light-emitting tube, light-receiving to pipe, and described light-emitting tube and light-receiving are symmetrically set in the grating wheel of being installed in the support plate caulking groove to pipe can respond to the support plate corresponding position that passes grating light;
One control circuit is used for a pot displacement in the electric heating pressure cooker is become behind the displacement signal its processing, sends into single-chip microcomputer to obtain the pressure instant messages;
The push rod of described gear train amplifies the displacement that pot pressurized in the resilient seal electric heating pressure cooker produces through the transmission of gear train, and is converted to swing offset, thereby obtains the displacement signal of pot in the electric heating pressure cooker; Control circuit is sent into single-chip microcomputer after its signal is handled, and Single Chip Microcomputer (SCM) program is controlled electric heating pressure cooker heating system according to pressure;
Described grating wheel is by protrude out the lever sectional wheel that pivot articulates in the middle of the support plate caulking groove, this lever sectional wheel wheel periphery is along the grating hole of evenly laying, be provided with between the lever sectional wheel wheel body between this lever sectional wheel pivot and the lever sectional wheel grating hole and the corresponding edge of support plate caulking groove and eliminate the set spring in total driving-chain gap, the extension rod that the other end in the relative grating of this lever sectional wheel wheel shaft hole extends from the outside one of pivot, the gear train push rod that this extension rod top is connected is formed;
The connected mode of described gear train push rod and extension rod is one of following two kinds:
The two ends of gear train push rod articulate respectively under the effect of electric heating pressure cooker pot inner pressure in the caulking groove of the sensing part that produces to bottom offset, extension rod end;
The two ends of gear train push rod touch respectively under the effect of electric heating pressure cooker pot inner pressure in the pit that is arranged with on the sensing part that produces to bottom offset, the extension rod end end face; Distance between described lever sectional wheel pivot center and the center, lever sectional wheel grating hole articulates or touches the distance at center to described gear train push rod and extension rod greater than lever sectional wheel pivot center;
Described control circuit comprises: single-chip microcomputer, shaping circuit, resistance, triode, relay, light-emitting tube, light-receiving are to pipe, electric hot tray, wherein: shaping circuit obtains light-receiving to pipe signal shaping, obtaining the dephased incremental encoding pulse signal of two-way sends into single-chip microcomputer and counts processing, transistor emitter ground connection, single-chip microcomputer one delivery outlet is through the base stage of resistance access triode, and the collector of triode controls electric hot tray through relay.
CN200910106182XA 2009-03-24 2009-03-24 Pressure displacement measure and control device of electrothermal pressure kitchenware and pressure measure and control method thereof Expired - Fee Related CN101520316B (en)

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CN104280179B (en) * 2013-07-03 2016-12-28 飞利浦(嘉兴)健康科技有限公司 Pressure detecting system and Voltage force kitchen tools
CN109892976B (en) * 2019-04-11 2024-05-03 广东海洋大学 Household intelligent anti-overflow electric cooker

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