CN105636275A - Method for piezoelectric induction remote control LED lamp, piezoelectric induction remote control LED lamp and switch - Google Patents
Method for piezoelectric induction remote control LED lamp, piezoelectric induction remote control LED lamp and switch Download PDFInfo
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- CN105636275A CN105636275A CN201610083746.2A CN201610083746A CN105636275A CN 105636275 A CN105636275 A CN 105636275A CN 201610083746 A CN201610083746 A CN 201610083746A CN 105636275 A CN105636275 A CN 105636275A
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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Abstract
The invention discloses a method for a piezoelectric induction remote control LED lamp, the piezoelectric induction remote control LED lamp for achieving the method and a switch. The method comprises the steps as follows: (1) an induction part arranged on the ground induces the pressure thereon and converts the pressure into an electric signal for outputting; (2) the electric signal supplies electricity to a circuit part which is connected with the induction part; (3) when the energy of the electric signal is enough to enable the circuit part to normally work, the circuit part transmits a wireless control signal; and (4) the LED lamp receives the wireless control signal and controls the state according to the signal. By the technical scheme disclosed by the invention, a power circuit does not need to be arranged; a battery is also not required for supplying electricity; the pressure, on the lamp, from a pedestrian or a vehicle is directly converted into electric energy for supplying electricity; the power consumption in an off-working state is zero; meanwhile, the technical problem that an inductive sensor is in a working state for a long period of time and is easy to damage in the prior art is solved; energy conservation and environment protection are achieved; and the service lifetime of a product is also prolonged.
Description
Technical field
The present invention relates to voltage inductance and answer control field, the voltage inductance be specifically related to a kind of method that voltage inductance answers remote control LED lamp, realizing the method answers the LED of remote control and voltage inductance to answer remote switch.
Background technology
Need the place of on-demand illumination at the stair of office building, residential building and Factory Building, escalator, toilet, corridor, basement, hood etc., LED illumination can be adopted. General of these occasions are carrying out inductive lightning (than passing through if any people or having car to open) whenever necessary, in the prior art, the mode realizing inductive lightning mainly has infrared induction, microwave induced, sound sensing etc., generally all adopts integrated to inductive transducer (infrared, microwave, sound etc.) and LED. The inductive transducers such as infrared, microwave, sound are all active sensors, will be constantly in duty and just can play supervisory function bit. This causes the waste of the energy to a certain extent, is chronically at duty simultaneously and makes sensor be easily damaged.
In the prior art, sodium calcium strontium niobate (SCNN) base piezoelectric ceramic of tungsten bronze structure is not only to have premium properties but also have the ceramic material of good environment coordination type simultaneously. But the research of SCNN base pottery is mainly through improving piezoelectric ceramics performance in the replacement of Sr and Ca position at present, the replacement of Nb and Na is studied few, this research being unfavorable for being pushed further into SCNN based leadless piezoelectric ceramics system.
Therefore, for the drawbacks described above existed in currently available technology, in fact it is necessary to study, to provide new inductive lightning scheme, solves the defect existed in prior art.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the invention provides a kind of voltage inductance answer the method for remote control LED lamp and realize the voltage inductance of the method and answer remote control LED lamp and switch, through the pressure in out-of-date face over the ground, human body or vehicle can be converted to electric energy is that voltage inductance answers dispensing device to power, the state of LED is controlled by sending wireless control signal, power consumption during off working state is zero, also overcomes inductive transducer simultaneously and is chronically at the technical problem that duty is easily damaged.
For solving prior art Problems existing, the technical scheme is that
A kind of voltage inductance answers the method for remote control LED lamp, comprises the following steps:
It is arranged on ground sensing part sense the pressure born on it and pressure is converted to signal of telecommunication output;
The described signal of telecommunication provides power supply for the circuit part being connected with sensing part;
When the energy of the described signal of telecommunication is enough to make circuit part normal operation, described circuit part sends wireless control signal;
LED receives wireless control signal and controls its state according to this signal;
Wherein, described sensing part at least includes pressure conduction unit (101) and piezoelectricity sensing chip (102),
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described pressure conduction unit (101), for pressure is converted to the signal of telecommunication;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
The invention also discloses a kind of voltage inductance for realizing method described in claim 1 and answer remote control LED lamp, answer the LED (200) of dispensing device (100) and at least one built-in wireless communication module including voltage inductance, described voltage inductance is answered and is wirelessly connected between dispensing device (100) with described LED (200);
Described voltage inductance answers dispensing device (100) to be arranged in road surface, for sensing pedestrian or the automobile pressure to it on road surface, and sends wireless control signal;
Described LED (200) is used for receiving wireless control signal and controlling the state of LED (200) according to this signal;
Described voltage inductance answers dispensing device (100) to include pressure conduction unit (101), piezoelectricity sensing chip (102), commutator (103) and the first wireless communication module (104);
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described pressure conduction unit (101), for pressure being converted to the signal of telecommunication, after rectified device (103) rectification of the described signal of telecommunication, it is sent to the first wireless communication module (104);
After the described signal of telecommunication reaches some strength, described first wireless communication module (104) sends wireless control signal;
Described pressure conduction unit (101) is made up of elastomeric material;
Described LED (200) includes the second wireless communication module (201), switch module (202), LED constant current driving module (203), time block (205) and LED bead string (204);
Described second wireless communication module (201) is used for receiving wireless control signal;
Described time block (205) is for timing controlled;
Described switch module (202) drives module (203) and time block (205) to be connected with the second wireless communication module (201), LED constant current, is used for controlling described LED constant current and drives whether module (203) switches on power;
Described LED constant current drives module (203) to be connected with LED bead string (204), for output driving current lightening LED lamp bead string (204);
Described second wireless communication module (201) receives described voltage inductance when answering the wireless control signal that dispensing device (100) sends, and sends control signal and makes described switch module (202) turn on and make described time block (205) opening timing;
The default timing of described time block (205) sends control signal and makes described switch module (202) turn off after terminating;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
The invention also discloses a kind of voltage inductance for realizing method described in claim 1 and answer remote switch, including pressure conduction unit (101), piezoelectricity sensing chip (102), commutator (103) and the first wireless communication module (104);
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described described pressure conduction unit (101), for pressure being converted to the signal of telecommunication, after rectified device (103) rectification of the described signal of telecommunication, it is sent to the first wireless communication module (104);
After the described signal of telecommunication reaches some strength, described first wireless communication module (104) sends wireless control signal;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
Preferably, the content of described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3, CaCO3, Na2CO3, K2CO3, Nb2O5 than its ratio of calculating is stoichiometrically: 1.85:0.15:0.475:0.025:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.45:0.05:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3�� CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.425:0.075:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.4:0.1:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.425:0.125:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.35:0.15:2.5.
Preferably, described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.3:0.2:2.5.
Compared with prior art, beneficial effects of the present invention is as follows: (1) voltage inductance answers dispensing device without arranging power circuit, without adopting battery to power, directly pressure of pedestrian or vehicle on it being converted to electric energy and be powered, the power consumption of off working state is zero; (2) overcome inductive transducer in prior art and be chronically at the technical problem that duty is easily damaged; (3) switch of LED is arranged on the ground, make control mode abundanter, optimize the LED effect as decorative light-source further. (4) sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials that the present invention adopts changes pottery lattice structure by K+ replacement Na+, and ferroelectric properties and piezoelectric property to pottery have great raising.
Accompanying drawing explanation
Fig. 1 realizes the voltage inductance of remote control LED lamp method of the present invention to answer the theory diagram of remote control LED lamp;
Fig. 2 is that the voltage inductance realizing remote control LED lamp method of the present invention answers the voltage inductance in remote control LED lamp to answer the theory diagram of dispensing device;
Fig. 3 realizes the voltage inductance of remote control LED lamp method of the present invention to answer the theory diagram of the LED in remote control LED lamp.
Fig. 4 is the piezoelectric modulus of sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials adopted.
Fig. 5 is the ferroelectric hysteresis loop of sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials adopted.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
On the contrary, the present invention contains any replacement made in the spirit and scope of the present invention, amendment, equivalent method and scheme being defined by the claims. Further, in order to make the public that the present invention to be had a better understanding, in below the details of the present invention being described, detailed describe some specific detail sections. The description not having these detail sections for a person skilled in the art can also understand the present invention completely.
The invention discloses a kind of method that voltage inductance answers remote control LED lamp, comprise the following steps:
(1) it is arranged on ground sensing part sense the pressure born on it and pressure is converted to signal of telecommunication output;
(2) signal of telecommunication provides power supply for the circuit part being connected with sensing part;
(3) when the energy of the signal of telecommunication is enough to make circuit part normal operation, circuit part sends wireless control signal;
(4) LED receives wireless control signal and controls its state according to this signal.
Wherein, described sensing part at least includes pressure conduction unit 101 and piezoelectricity sensing chip 102,
Described pressure conduction unit 101 is for giving described piezoelectricity sensing chip 102 by pressure transmission;
Described piezoelectricity sensing chip 102 is arranged on below described pressure conduction unit 101 and is in close contact with described pressure conduction unit (101), for pressure is converted to the signal of telecommunication;
Described piezoelectricity sensing chip 102 adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
Referring to Fig. 1, it show the voltage inductance realizing remote control LED method of the present invention and answer the theory diagram of remote control LED lamp, answer the LED 200 of dispensing device 100 and at least one built-in wireless communication module including voltage inductance, voltage inductance is answered and is wirelessly connected between dispensing device 100 with LED 200; In actual applications, a voltage inductance can be adopted to answer dispensing device 100 to control a LED 200, a voltage inductance can also be adopted to answer dispensing device 100 to control multiple LED 200, multiple voltage inductance can also be adopted to answer dispensing device 100 to control a LED 200, be specifically dependent upon practical application.
Voltage inductance answers dispensing device 100 to be arranged in road surface, for sensing pedestrian or the automobile pressure to it on road surface, and sends wireless control signal; Voltage inductance answers dispensing device 100 to include sensing part (for induction pressure and be converted to signal of telecommunication output) and circuit part (process and control for the signal of telecommunication), and sensing part is arranged in road surface (flushing below road surface or with road surface); Circuit part is connected with the outfan of sensing part, is placed in a housing, is fixed on around sensing part. Circuit part does not have independent current supply circuit (without external power supply or battery), sensing part be powered. Therefore, circuit part does not work at ordinary times, and when having pedestrian or vehicle through out-of-date, this pressure is converted to the signal of telecommunication and is output as transmission wireless control signal after circuit part is powered by sensing part.
LED 200 is for receiving wireless control signal and controlling the state of LED 200 according to this signal.
Referring to Fig. 2, the voltage inductance showing the embodiment of the present invention answers the voltage inductance in remote control LED lamp to answer the theory diagram of dispensing device, and voltage inductance answers dispensing device 100 to include pressure conduction unit 101, piezoelectricity sensing chip 102, commutator 103 and the first wireless communication module 104; Pressure conduction unit 101 and piezoelectricity sensing chip 102 are sensing part; Commutator 103 and the first wireless communication module 104 are circuit part, and certain circuit part is not only limited to this, it is also possible to comprise other circuit modules.
Pressure conduction unit 101 is used for pressure transmission to piezoelectricity sensing chip 102;
Piezoelectricity sensing chip 102 is arranged on below pressure conduction unit 101 and is in close contact with pressure conduction unit 101, for pressure is converted to the signal of telecommunication, is sent to the first wireless communication module 104 after the signal of telecommunication rectified device 103 rectification; After the signal of telecommunication reaches some strength, the first wireless communication module 104 sends wireless control signal.
In a preferred embodiment, it is elastomeric layer below piezoelectricity sensing chip 102, so that piezoelectricity sensing chip 102 has enough deformation spaces, improves generating efficiency.
In a preferred embodiment, pressure conduction unit 101 is made up of elastomeric material, has certain deformation space, it is possible to effectively by pressure transmission to piezoelectricity sensing chip 102. Elastomeric material can be elastomeric material or spring material.
In a preferred embodiment, electric induction sheet 102 selects piezoelectric ceramic piece. Piezoelectric ceramic piece mechanical strength is high, repeatedly stable performance after pressurization, and dielectric constant is bigger. Reality is selected the piezoelectric ceramic piece that piezoelectric modulus is higher.
Referring to Fig. 3, it is shown that answer the theory diagram of LED in remote control LED lamp for embodiment of the present invention voltage inductance. LED 200 includes the second wireless communication module 201, switch module 202, LED constant current driving module 203, time block 205 and LED bead string 204;
Second wireless communication module 201 is used for receiving wireless control signal;
Switch module 202 drives module 203 and time block 205 to be connected with the second wireless communication module 201, LED constant current, is used for controlling LED constant current and drives whether module 203 switches on power, thus lightening LED lamp bead string 204. The power supply driving module 203 for LED constant current does not show that in figure 3.
LED constant current drives module 203 to be connected with LED bead string 204, for output driving current lightening LED lamp bead string 204; LED constant current drives module 203 to be mature modules in prior art, and the particular type being typically based on LED bead string 204 selects suitable LED constant current to drive module 203.
Second wireless communication module 201 receives voltage inductance when answering the wireless control signal that dispensing device 100 sends, and sends control signal and makes switch module 202 turn on and make time block 205 opening timing;
Time block 205 is preset after timing terminates, and sends control signal and makes switch module 202 turn off.
In a preferred embodiment, switch module 202 is relay or semiconductor switch. Semiconductor switch is MOS switch pipe or controllable silicon. MOS switch pipe, general selection P type MOS switch pipe, it is also possible to select N-type MOS switch pipe.
Second wireless communication module 201 is constantly in listening state, selects the wireless module of low-power consumption in prior art, and it receives power consumption lower than 30 �� A, far below the stand-by power consumption of microwave, the inductive transducer such as infrared.
In a kind of practical occasion, voltage inductance of the present invention is answered remote control LED lamp be used for corridor lamp illumination realization sensing and controls. Answer dispensing device for the square voltage inductance of a 1m*1m, this device is arranged under floor tile or timber floor, certainly in some occasions, it is also possible to directly bear the pressure of human body. Pedestrian answers dispensing device about can produce the energy of 600 microwatts through this square voltage inductance. And the transmitting power of low-consumption wireless communication module can lower than 350 microwatts at present, therefore a pedestrian is through corridor, and voltage inductance is answered energy produced by dispensing device to be sufficient for wireless communication module and sent a control signal. It is therefore possible to use the present invention substitutes microwave induced control lamp and the infrared induction control lamp of prior art.
In another kind of practical occasion, voltage inductance of the present invention is answered remote control LED lamp be used for parking lot or road inductive lightning. Answer dispensing device for the square voltage inductance of a 1m*1m, this device is arranged on the cement layer of road or bitumen layer once. Automobile is through the out-of-date energy producing 4000 microwatts, much larger than energy produced by pedestrian, after being used for starting wireless communication module transmitting control commands, arranges this device if in the road more, even can also use electric consumption on lighting.
In another kind of practical occasion, remote control LED lamp is answered to be used for light of stage control voltage inductance of the present invention. Stage is respectively provided with multiple square voltage inductance in certain square areas and answers dispensing device, each voltage inductance answer dispensing device control can not LED, so along with the change of dance step in stage, make LED lamplight present multiple illuminating effect, optimize the LED illuminating effect as decorative light-source further.
Present invention also offers a kind of microwave induced remote switch, answer dispensing device to be applied to other on-off control occasion by above-mentioned voltage inductance, and be not only limited to the control of LED.
Preparation and the performance thereof of of the present invention sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials are discussed in detail below again through embodiment.
Embodiment 1
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.95K0.05Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Table 1
Embodiment 2
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.9K0.1Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Embodiment 3
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.85K0.15Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Preparing correspondingly piezoelectric ceramics according to described SCNNK piezoelectric ceramics preparation method, piezoelectric coefficient d 33 result of test is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Embodiment 4
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.8K0.2Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Embodiment 5
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.75K0.25Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Embodiment 6
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.7K0.3Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Embodiment 7
A kind of preparation of SCNN base piezoelectric ceramic, including following step:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na0.6K0.4Nb5O15Stoichiometric proportion carries out proportioning;
(2) mixing: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12h, obtains slurry;
(3) dry: slurry is placed in 90 DEG C of calorstats and dries, and grinding obtains powder in mortar;
(4) pre-burning: powder is placed in high temperature sintering furnace and is carrying out pre-burning, calcined temperature is 1050 DEG C, and burn-in time is 4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12h;
(6) dry: the slurry obtained after ball milling is again placed in 90 DEG C of calorstats and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into diameter 15mm, thickness 1.5mm green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 6h.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNNK piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
Comparative example 1
Identical with embodiment 1��7, simply do not add K+ to replace Na+. The preparation of this SCNN piezoelectric ceramics.
Correspondingly piezoelectric ceramics is prepared, the piezoelectric coefficient d of test according to described SCNN piezoelectric ceramics preparation method33Result is shown in Fig. 4, and ferroelectric hysteresis loop is shown in Fig. 5. Wherein pre-burning and sintering process heating rate are 4 DEG C/min, and cooling rate is also 4 DEG C/min. Dump temperature sets such as table 1.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. the method that a voltage inductance answers remote control LED lamp, it is characterised in that comprise the following steps:
It is arranged on ground sensing part sense the pressure born on it and pressure is converted to signal of telecommunication output;
The described signal of telecommunication provides power supply for the circuit part being connected with sensing part;
When the energy of the described signal of telecommunication is enough to make circuit part normal operation, described circuit part sends wireless control signal;
LED receives wireless control signal and controls its state according to this signal;
Wherein, described sensing part at least includes pressure conduction unit (101) and piezoelectricity sensing chip (102),
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described pressure conduction unit (101), for pressure is converted to the signal of telecommunication;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
2. the voltage inductance for realizing method described in claim 1 answers remote control LED lamp, it is characterized in that, answer the LED (200) of dispensing device (100) and at least one built-in wireless communication module including voltage inductance, described voltage inductance is answered and is wirelessly connected between dispensing device (100) with described LED (200);
Described voltage inductance answers dispensing device (100) to be arranged in road surface, for sensing pedestrian or the automobile pressure to it on road surface, and sends wireless control signal;
Described LED (200) is used for receiving wireless control signal and controlling the state of LED (200) according to this signal;
Described voltage inductance answers dispensing device (100) to include pressure conduction unit (101), piezoelectricity sensing chip (102), commutator (103) and the first wireless communication module (104);
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described pressure conduction unit (101), for pressure being converted to the signal of telecommunication, after rectified device (103) rectification of the described signal of telecommunication, it is sent to the first wireless communication module (104);
After the described signal of telecommunication reaches some strength, described first wireless communication module (104) sends wireless control signal;
Described pressure conduction unit (101) is made up of elastomeric material;
Described LED (200) includes the second wireless communication module (201), switch module (202), LED constant current driving module (203), time block (205) and LED bead string (204);
Described second wireless communication module (201) is used for receiving wireless control signal;
Described time block (205) is for timing controlled;
Described switch module (202) drives module (203) and time block (205) to be connected with the second wireless communication module (201), LED constant current, is used for controlling described LED constant current and drives whether module (203) switches on power;
Described LED constant current drives module (203) to be connected with LED bead string (204), for output driving current lightening LED lamp bead string (204);
Described second wireless communication module (201) receives described voltage inductance when answering the wireless control signal that dispensing device (100) sends, and sends control signal and makes described switch module (202) turn on and make described time block (205) opening timing;
The default timing of described time block (205) sends control signal and makes described switch module (202) turn off after terminating;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
3. the voltage inductance for realizing method described in claim 1 answers remote switch, it is characterized in that, including pressure conduction unit (101), piezoelectricity sensing chip (102), commutator (103) and the first wireless communication module (104);
Described pressure conduction unit (101) is for giving described piezoelectricity sensing chip (102) by pressure transmission;
Described piezoelectricity sensing chip (102) is arranged on described pressure conduction unit (101) lower section and is in close contact with described described pressure conduction unit (101), for pressure being converted to the signal of telecommunication, after rectified device (103) rectification of the described signal of telecommunication, it is sent to the first wireless communication module (104);
After the described signal of telecommunication reaches some strength, described first wireless communication module (104) sends wireless control signal;
Described piezoelectricity sensing chip (102) adopts sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials, and described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials passes through material composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5With chemical formula Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning and is prepared from, and wherein proportionality coefficient x is 0��0.4;
Described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials is prepared from by following steps:
(1) dispensing: SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5By Sr1.85Ca0.15Na1-xKxNb5O15Stoichiometric proportion carries out proportioning;
(2) ball milling: raw material, ball milling pearl, ethanol being placed in ball mill according to the mass ratio of 1:4.5:1.2 and carry out wet ball grinding, wherein Ball-milling Time is 12��24h, obtains slurry;
(3) dry: slurry is placed in calorstat and dries, and grinding obtains powder in mortar;
(4) pre-burning: being placed in high temperature sintering furnace by powder and carrying out pre-burning, calcined temperature is 1050-1100 DEG C, burn-in time is 2��4h;
(5) ball milling: the powder of pre-burning is again placed in ball grinder to carry out wet ball grinding, Ball-milling Time is 12��24h;
(6) dry: the slurry obtained after ball milling is again placed in calorstat and dries, and in mortar, grind to form powder;
(7) granulating and forming: mixing in powder using the poly-vinyl alcohol solution (PVA) that concentration is 8% as binding agent, the weight of the binding agent mixed is the 5%-10% of powder weight, mix homogeneously in mortar; Powder is placed in grinding tool and is pressed into green compact; Green compact are milled in mortar powder, are sieved by 80-140 mesh sieve; Obtain the powder of certain granules size, be placed in grinding tool and be pressed into green compact;
(8) binder removal: green compact are placed in Muffle furnace carry out calcining and get rid of the PVA in green compact;
(9) sintering: being placed in high temperature sintering furnace by the green compact after binder removal and be sintered obtaining fine and close pottery, sintering temperature is 1240��1340 DEG C, and sintering time is 3��6h.
4. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterized in that, the content of described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3, CaCO3, Na2CO3, K2CO3, Nb2O5 than its ratio of calculating is stoichiometrically: 1.85:0.15:0.475:0.025:2.5.
5. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.45:0.05:2.5.
6. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.425:0.075:2.5.
7. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.4:0.1:2.5.
8. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.425:0.125:2.5.
9. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.35:0.15:2.5.
10. the method that voltage inductance according to claim 1 answers remote control LED lamp, it is characterised in that described sodium calcium strontium niobate (SCNN) based piezoelectric ceramic materials Raw composition SrCO3��CaCO3��Na2CO3��K2CO3��Nb2O5Content stoichiometrically than calculate its ratio be: 1.85:0.15:0.3:0.2:2.5.
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| CN113791110A (en) * | 2021-09-15 | 2021-12-14 | 苏州热工研究院有限公司 | Device and method for measuring glass transition temperature of blade of wind generating set |
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