CN104297168B - A kind of device for monitoring tea concentration and the teacup with the device - Google Patents

A kind of device for monitoring tea concentration and the teacup with the device Download PDF

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Publication number
CN104297168B
CN104297168B CN201410532410.0A CN201410532410A CN104297168B CN 104297168 B CN104297168 B CN 104297168B CN 201410532410 A CN201410532410 A CN 201410532410A CN 104297168 B CN104297168 B CN 104297168B
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China
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pin
resistance
concentration
chip microcomputer
tea
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CN201410532410.0A
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CN104297168A (en
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崔虎
陈粤俊
邝知研
何殷健
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South China Normal University
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South China Normal University
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Abstract

The present invention relates to tea concentration Detection Techniques field, the specifically related to a kind of device for monitoring tea concentration and the teacup with the device, the single chip microcomputer main control system of the present invention is mainly made up of a piece of AT89C51 single-chip microcomputers and some peripheral circuits, for controlling light emitting devices, optical detection device, warning device co-ordination, the light that light emitting devices is sent is received after passing through tea by optical detection device, and signal will be received be conveyed to single chip microcomputer main control system and analyzed, when optical detection device, which detects tea concentration, reaches the concentration that user is set, the warning device will alarm to remind user to drink tea in time, great convenience is brought to user;The tea cup structure of device with described monitoring tea concentration is simple, using easy to carry, practical.

Description

A kind of device for monitoring tea concentration and the teacup with the device
Technical field
The present invention relates to tea concentration Detection Techniques field, and in particular to the device of a kind of monitoring tea concentration and with this The teacup of device.
Background technology
The concentration of tea not only influences the tea perfume and mouthfeel of cuppa, also influences the nutritional ingredient of tea, and research in addition shows Absorption of the tea influence human body of excessive concentrations to iron, the concentration and health of tea have close ties.In daily life In, judgement of the people to tea concentration is largely all rested in the observation of naked eyes, is judged by the color of tea, but This method and inaccurate and consuming time.Now, the people in fast pace life are particularly busy in office Staff often drinks tea to refresh oneself during operation, but they generally have no time to stop work on hand to observe tea Concentration, so the problem of tea concentration is too high often occurs.
In order to avoid the forfeiture that infusion of tea causes very much tea concentration too high with nutritional ingredient long, occur in the market Some can control the teacup of tea concentration, but they do not possess the function of automatic monitoring tea concentration, but need user The color of tea is observed with eye every now and then, is then again in time separated tealeaves with tea, this method not only wastes user Many times, and the subjective judgement with user can not accurately determine tea concentration, so lacking good use Experience at family.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art providing a kind of device for monitoring tea concentration, optics is utilized Sensing technology and tea concentration can influence the principle of optical signal transmissivity to monitor tea concentration, when the concentration monitored reaches use During the concentration that family is set, it will alarm to remind user to drink tea in time.User is obtained after warning message, can pass through tea interval Tealeaves is taken out, realizes that tealeaves separates with tea and drinks tea, the work in user's hand had not both been interfered with so, can have been allowed again User drinks the tea for oneself liking concentration, and great convenience is brought to user.
It is a further object of the present invention to provide a kind of teacup for the device for having and monitoring tea concentration, easy to use, practicality Property is strong.
The present invention is achieved through the following technical solutions the purpose:
A kind of device for monitoring tea concentration, including single chip microcomputer main control system, light emitting devices, optical detection device, alarm Device, the light emitting devices, optical detection device, warning device are connected with single chip microcomputer main control system respectively.
The single chip microcomputer main control system is mainly made up of a piece of AT89C51 single-chip microcomputers and some peripheral circuits, is used for Each several part device co-ordination is controlled, the lower section of teacup inner bag is placed in.
Described light emitting devices and the P1.0 mouths of single chip microcomputer main control system are connected, and purple is controlled by single chip microcomputer main control system LED D1's is luminous, and wherein LED D1 negative electrode connects the collector junction c pin of NPN triode Q1, and anode is connect by resistance R2 Upper power supply, triode Q1 base stage b pin connects the P1.0 mouths of single chip microcomputer main control system by resistance R1, and emitter junction e-pin is grounded, Resistance R2 plays metering function to protect purple LED D1.
Wherein, described optical detection device includes optical detection circuit, concentration counting circuit, concentration comparison circuit, wherein dense Spend comparison circuit and the P1.1 mouths of single-chip microcomputer and P1.2 mouthfuls of connections;
The quantity of the optical detection circuit is two, including photodiode D2, the integrated fortune of photodiode D3, LF356 Chip is put, wherein, first LF356 chips A1 inverting input pin 2 passes through resistance R3 and electric capacity C1 earths, positive The connection photodiode of input pin 3 D2 minus earth, output pin 6 accesses second LF356 core by resistance R5 Piece A2 pin 2, LF356 chips A2 pin 3 is grounded, and output pin 6 feeds back to first LF356 chips A1 pin 3, Its backfeed loop is resistance R4 and electric capacity C2 in parallel, and output pin 6 connects drawing for the 3rd LF356 chips A3 by resistance R7 Pin 2, LF356 chips A3 pin 3 is grounded by resistance R9, and its output pin 6 feeds back to pin 2 by resistance R8, output End exports analog voltage signal VS1 by electric capacity C4;
The concentration counting circuit, by LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chips A8 and corresponding electricity Resistance, electric capacity composition, two analog voltage signal VS1s and VS2 of the optical detection circuit are connected each via resistance R17 and R19 LM324 chips A7 normal phase input end pin 3, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 passes through resistance R20 Ground connection, output pin 1 connects second LM324 integrated transporting discharging chips A8 pin 3 by electric capacity C9, while by feeding back electricity Resistance R18 takes back A7 pin 3;LM324 integrated transporting discharging chips A8 output pin 1 takes back pin 2 by feedback resistance R22, Voltage follower is constituted, output pin 1 is grounded by resistance R23 and R24, electricity is used as using two the middle of resistance R23 and R24 Output end is pressed, analog voltage signal VS3 is exported by electric capacity C10;
The P1.1 mouths of the concentration comparison circuit and single chip microcomputer main control system and P1.2 mouthfuls of connections, including the integrated fortune of LM324 Put chip A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage-regulator diode D4, voltage-regulator diode D5, the concentration The analog voltage signal VS3 of counting circuit is connected to LM324 chips A9 inverting input pin 2, positive input by resistance R27 Pin 3 is held to be grounded by resistance R25, R26 and R28, output pin 1 is grounded by resistance R31 and voltage-regulator diode D4, by number Word voltage signal VS4 inputs single-chip microcomputer P1.1 mouth;The voltage signal VS3 of the concentration counting circuit is connected to by resistance R29 Two LM324 chips A10 pin 2, pin 3 is grounded by resistance R26 and R30, and output pin 1 is by resistance R32 and surely Press diode D5 ground connection, the LM324 that digital voltage signal VS5 is inputted in P1.2 mouthfuls of single-chip microcomputer, described concentration comparison circuit The power end pin 4 of chip connects 5V voltage sources, and pin 11 is grounded, and the slide rheostat RE in the circuit is that concentration sets rotation Button.
Wherein, described warning device includes buzzer alarm circuit and indicator lamp warning circuit, wherein, buzzer warning Circuit and the P1.3 of single chip microcomputer main control system mouths are connected, and the P1.4 mouths of indicator lamp warning circuit and single chip microcomputer main control system are connected;
In the buzzer alarm circuit, active buzzer E1 is used, the positive pole of buzzer is connected by resistance R34 Power supply, negative pole connects triode Q2 collector junction c pin, and triode Q2 base stage b pin connects single-chip microcomputer by resistance R33 P1.3 mouthfuls, emitter junction e-pin ground connection, resistance R34 plays metering function to protect buzzer E1, wherein, switch S2 is buzzer Switch;
The negative electrode connecting triode Q3 of the red LED lamp D6 of indicator lamp warning circuit colelctor electrode c pins, anode leads to Cross resistance R36 to connect with the mains, triode Q3 b pins connect the P1.4 mouths of single-chip microcomputer, e pins ground connection, resistance by resistance R35 R36 plays metering function to protect red LED lamp D6.
A kind of teacup of the device with described monitoring tea concentration, including be made up of lighttight cup body and cover Cup, the cup body is internally provided with the inner bag of light-permeable, and the purple LED D1 is arranged at the outer wall of inner bag, with it is described The relative side of purple LED D1 is provided with photodiode;
Removably it is provided with the opening of the inner bag and the monitoring tea concentration is provided with below tea interval, inner bag Device, the device of the purple LED D1, photodiode respectively with the monitoring tea concentration is connected.
Further, the cup body be provided with respectively with it is described monitoring tea concentration device be connected system master switch, SR, concentration arrange knob, buzzer, the toggle switch for closing buzzer work, red LED indicator lamp.
Further, the cup body is additionally provided with guiding gutter, and the guiding gutter is located at system master switch, SR, dense Degree sets knob, buzzer, toggle switch, the top of red LED indicator lamp.
As preferred, the quantity of the photodiode is two, and two photodiodes are respectively arranged at purple LED Lamp D1 oblique upper and obliquely downward.
Relative to prior art, beneficial effects of the present invention are:The single chip microcomputer main control system of the present invention is mainly by a piece of AT89C51 single-chip microcomputers and some peripheral circuits composition, for controlling light emitting devices, optical detection device, warning device to coordinate Work, the light that light emitting devices is sent is received after passing through tea by optical detection device, and is conveyed to monolithic by signal is received Machine master control system is analyzed, when optical detection device, which detects tea concentration, reaches the concentration that user is set, the alarm dress Putting will be alarmed to remind user to drink tea in time, and great convenience is brought to user;With described monitoring tea concentration Device tea cup structure it is simple, using easy to carry, it is practical.
Brief description of the drawings
Fig. 1 is the structural representation with the teacup for monitoring tea concentration device of the invention.
Fig. 2 is the circuit theory diagrams of the monitoring tea concentration device of the present invention.
Fig. 3 is the circuit theory diagrams of the light emitting devices of the present invention.
Fig. 4 is the circuit theory diagrams of the optical detection device of the present invention.
Fig. 5 is the circuit theory diagrams of the warning device of the present invention.
Fig. 6 is that the device of application monitoring tea concentration carries out the workflow diagram of tea concentration monitoring.
In figure:1- single chip microcomputer main control systems;2- light emitting devices;3- optical detection devices;31- optical detection circuits;32- concentration Counting circuit;33- concentration comparison circuits;4- warning devices;41- buzzer alarm circuits;42- indicator lamp warning circuits;5- glasss Body;51- cup bodies;52- cup lids;6- inner bags;7- purple LEDs;8- photodiodes;9- monitors the device of tea concentration;10- systems System master switch;11- SRs;12- concentration arrange knobs;13- buzzers;14- toggle switch;15- red LED indicator lamps; 16- guiding gutters.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail.
Embodiment 1.
As shown in Fig. 2 the present invention monitoring tea concentration device including single chip microcomputer main control system 1, light emitting devices 2, Optical detection device 3, warning device 4, the light emitting devices 2, optical detection device 3, warning device 4 respectively with single-chip microcomputer master control system System 1 is connected.
The single chip microcomputer main control system 1 is made up of a piece of AT89C51 single-chip microcomputers and some peripheral circuits, including resets electricity Road and crystal oscillating circuit, the reset circuit connect the RST pins of single-chip microcomputer, and crystal oscillating circuit connects the XTAL1 and XTAL2 of single-chip microcomputer Pin, single chip microcomputer main control system 1 controls these three device co-ordinations.
As shown in figure 3, the light emitting devices 2 includes purple LED D1, NPN triode, current-limiting resistance, described light Emitter 2 is connected with the P1.0 mouths of single chip microcomputer main control system 1, and the purple of light emitting devices 2 is controlled by single chip microcomputer main control system 1 LED D1 lights, and wherein the negative electrode of purple LED D1 connects the collector junction c pin of NPN triode Q1, and anode passes through resistance R2 Connect with the mains, triode Q1 base stage b pin connects the P1.0 mouths of single chip microcomputer main control system 1 by resistance R1, emitter junction e-pin connects Ground, resistance R2 plays metering function to protect purple LED D1.
The present invention uses purple LED, is that its penetrability is weaker because the wavelength of purple light is shorter, so tea Concentration influences larger to light intensity, and the angle of divergence of fluorescence that LED is sent is larger, is adapted to the double light design of the present invention. Because the quasi-bidirectional interface driving force of single-chip microcomputer is weaker, the present invention improves its driving force, current-limiting resistance using NPN triode R2 is to play a part of protecting LED, after the master switch of activation system, and single-chip microcomputer will give one high level of P1.0 mouths, driving Purple LED sends the purple fluorescence for determining intensity.
As shown in figure 4, described optical detection device 3 is more electric including optical detection circuit 31, concentration counting circuit 32, concentration Road 33, wherein concentration comparison circuit 33 are connected with the P1.1 mouths of single-chip microcomputer and P1.2 mouthfuls;The device is used to receive from light transmitting The light of device, is converted into voltage signal and it is handled.
The quantity of the optical detection circuit 31 is two, including photodiode D2, photodiode D3, LF356 integrated Amplifier chip, wherein, first LF356 chips A1 inverting input pin 2 is by resistance R3 and electric capacity C1 earths, just The connection photodiode of phase input pin 3 D2 minus earth, output pin 6 accesses second LF356 by resistance R5 Chip A2 pin 2, LF356 chips A2 pin 3 is grounded, and output pin 6 feeds back to first LF356 chips A1 pin 3, its backfeed loop is resistance R4 and electric capacity C2 in parallel, and output pin 6 connects the 3rd LF356 chips A3's by resistance R7 Pin 2, LF356 chips A3 pin 3 is grounded by resistance R9, and its output pin 6 feeds back to pin 2 by resistance R8, defeated Go out end and analog voltage signal VS1 is exported by electric capacity C4;
The present invention uses LF356 chips, is due to that LF356 has high input impedance and low input noise electric current, Ke Yigeng Amplify the output current of photodiode well.By taking first circuit as an example, resistance R3 is to be made to remove because resistance R4 is excessive Into DC error, electric capacity C1 is that, in order to remove resistance R2 noise, LF356 chips A2 is constituted with resistance R5, R6 and electric capacity C3 Internal feedback circuit, wherein R5, R6 and C3 control A2 gain response characteristics.In order to reduce noise band, R6 resistance can be allowed remote Resistance much smaller than R5.Resistance R4 is feedback resistance, and the output current of photodiode is converted into voltage signal, and C2 is used to go Except R3 noise, the 3rd LF356 chip constitutes anti-phase proportional amplifier, the voltage signal of output can be switched on the occasion of, and Appropriate amplification voltage, its multiplication factor can be determined that its output end can eliminate direct current plus electric capacity C4 by corresponding resistance Influence of the electric signal to next stage circuit.Present invention uses two optical detection circuits 31, for receiving light emitting devices simultaneously The light sent.
The concentration counting circuit 32 is by LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chips A8 and corresponding electricity Resistance, electric capacity composition, two analog voltage signal VS1s and VS2 of the optical detection circuit are connected each via resistance R17 and R19 LM324 chips A7 normal phase input end pin 3, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 passes through resistance R20 Ground connection, output pin 1 connects second LM324 integrated transporting discharging chips A8 pin 3 by electric capacity C9, while by feeding back electricity Resistance R18 takes back A7 pin 3;LM324 integrated transporting discharging chips A8 output pin 1 takes back pin 2 by feedback resistance R22, Voltage follower is constituted, output pin 1 is grounded by resistance R23 and R24, electricity is used as using two the middle of resistance R23 and R24 Output end is pressed, analog voltage signal VS3 is exported by electric capacity C10;
The Part I of the circuit is with additive process computing circuit, it is therefore an objective to believe two voltages from optical detection circuit Number it is added, in order that the coefficient of addend is one, resistance R17, R18 and R19 resistance can be allowed equal, while defeated in order to ensure Enter the symmetry of level, R20 resistance can be allowed to be equal to R17, R18 and R19 threes resistance in parallel, in order that with additive process circuit Direct current signal does not influence next stage circuit, can add electric capacity C9 in output end.The Part II of the circuit is voltage follower, its Purpose is to improve the carrying load ability with additive process circuit, in order that the direct current signal of voltage follower does not influence next stage electricity Road, can add electric capacity C10 in output end.Output end series connection two resistance identical the resistance R23 and R24 of voltage follower connect Ground, using the voltage in the middle of two resistance as output voltage, output that can be to same additive process computing circuit by electric resistance partial pressure The computing that voltage is averaged, the voltage signal drawn after the processing by concentration counting circuit 32 can more reflect tea Concentration.
The concentration comparison circuit 33 is connected with the P1.1 mouths of single chip microcomputer main control system 1 and P1.2 mouthfuls, including LM324 integrated Amplifier chip A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage-regulator diode D4, voltage-regulator diode D5 are described dense The analog voltage signal VS3 of degree counting circuit is connected to LM324 chips A9 inverting input pin 2 by resistance R27, and positive is defeated Enter to hold pin 3 to be grounded by resistance R25, R26 and R28, output pin 1 is grounded by resistance R31 and voltage-regulator diode D4, will Digital voltage signal VS4 inputs single-chip microcomputer P1.1 mouth;The voltage signal VS3 of the concentration counting circuit 32 is connect by resistance R29 To second LM324 chips A10 pin 2, pin 3 is grounded by resistance R26 and R30, and output pin 1 passes through resistance R32 With voltage-regulator diode D5 ground connection, digital voltage signal VS5 is inputted in P1.2 mouthfuls of single-chip microcomputer, described concentration comparison circuit 33 The power end pin 4 of LM324 chips connects 5V voltage sources, and pin 11 is grounded, and the slide rheostat RE in the circuit is concentration Knob is set;
Single limit comparator is constituted by LM324 chips, the reference voltage of comparator derives from the partial pressure of 5V voltage source, wherein Resistance R25 resistance is about ten times of resistance R26 resistances, it is ensured that the voltage of R25 lower ends is 0.9 times of upper terminal voltage, utilizes R25 The voltage of upper end and the voltage of lower end are respectively as the reference voltage of two voltage comparators, and wherein slide rheostat RE can change Become the size of resistance both end voltage, corresponding to concentration arrange knob.When the output voltage of concentration counting circuit is more than set by user During the voltage put, i.e., the concentration of tea not yet reaches the concentration that user is set, and voltage comparator A9 and A10 exports low level simultaneously 0V delivers to single-chip microcomputer P1.1 mouth and P1.2 mouthfuls are handled;When the output voltage of concentration counting circuit is the voltage set by user When, i.e. the concentration of tea reaches the concentration that user is set, and voltage comparator A9 outputs high level 5V is delivered to single-chip microcomputer P1.1 mouth and entered Row processing, voltage comparator A10 outputs low level 0V delivers to P1.2 mouthfuls of single-chip microcomputer and handled;When the output of concentration counting circuit When voltage is 0.9 times of the voltage set by user, i.e., when the concentration of tea is beyond 1.1 times of the concentration of user's setting, voltage Output high level 5V delivers to single-chip microcomputer P1.1 mouth to comparator A9 and A10 simultaneously and P1.2 mouthfuls are handled.Wherein, voltage-regulator diode Voltage stabilizing parameter be 5V, can allow comparator output voltage stabilization in 0V or 5V, be easy to single-chip microcomputer to handle it.
As shown in figure 5, described warning device 4 includes buzzer alarm circuit 41 and indicator lamp warning circuit 42, wherein, Buzzer alarm circuit 41 is connected with the P1.3 mouths of single chip microcomputer main control system 1, indicator lamp warning circuit 42 and single-chip microcomputer master control system The P1.4 mouths connection of system 1;
In the buzzer alarm circuit 41, active buzzer E1 is used, the positive pole of buzzer E1 passes through resistance R34 Connect with the mains, negative pole connects triode Q2 collector junction c pin, triode Q2 base stage b pin connects monolithic by resistance R33 The P1.3 mouths of machine, emitter junction e-pin ground connection, resistance R34 plays metering function to protect buzzer E1, wherein, switch S2 is honeybee Ring device E1 switch;Buzzer alarm circuit 41 is controlled by the P1.3 mouths of single chip microcomputer main control system 1, and high level is exported when P1.3 mouthfuls And during switch S2 closures, buzzer alarm circuit 41 is then in alarm condition.It is dense when tea in the case of switch S2 closures When degree is less than the concentration set by user, single chip microcomputer main control system 1 controls buzzer E1 not sounding, when the concentration of tea reaches use During concentration set by family, the control buzzer E1 of single chip microcomputer main control system 1 sound per second once, when the concentration of tea exceeds user institute At 1.1 times of the concentration of setting, the control of single chip microcomputer main control system 1 buzzer E1 sound per second three times can feedback user in time The information of tea concentration.
The negative electrode connecting triode Q3 of the red LED lamp D6 of the indicator lamp warning circuit 42 colelctor electrode c pins, anode Connected with the mains by resistance R36, triode Q3 b pins connect the P1.4 mouths of single-chip microcomputer, e pins ground connection, electricity by resistance R35 Resistance R36 plays metering function to protect red LED lamp D6;High level is exported when P1.4 mouthfuls, indicator lamp warning circuit 42 is then in Alarm condition, indicator lamp warning circuit 42NPN triodes are equally the driving forces for improving one-chip machine port.It is dense when tea When degree is less than the concentration set by user, the control of single chip microcomputer main control system 1 red LED does not light, when the concentration of tea reaches use During concentration set by family, the control of single chip microcomputer main control system 1 red LED it is per second it is luminous once, when the concentration of tea exceeds user At 1.1 times of set concentration, the control of single chip microcomputer main control system 1 LED lights always, can feedback user tea in time The information of concentration.
As shown in fig. 6, the device 9 of the monitoring tea concentration of the application present invention carries out the workflow of tea concentration monitoring For:System initialization is carried out first, and then the control of single chip microcomputer main control system 1 LED D1 sends purple fluorescence, then monolithic owner Control system 1 receive by optical detection device 3 change after digital voltage signal and judged, judge voltage indicate existing concentration be No to be less than setting concentration, if so, then the control of single chip microcomputer main control system 1 indicator lamp does not work, buzzer E1 is not rung, and subsequently enters replacement System.If it is not, then continuing to judge that voltage indicates whether existing concentration is more than 1.1 times of setting concentration, if it is not, then single-chip microcomputer master control The control indicator lamp of system 1 it is per second it is bright once, control buzzer E1 sound per second once, subsequently enters reset system.If so, then monolithic The control indicator lamp of machine master control system 1 is bright always, and buzzer E1 sound per second three times subsequently enters reset system.Judge three kinds of states Afterwards, reset system judgement is finally carried out, if reset system, return system initialization repeats the above steps;If need not reset System, then return to single-chip microcomputer receive by optical detection device change after digital voltage signal the step for.
The light emitting devices 2 of the present invention uses purple LED, and due to the just fluorescence that purple LED is sent, it dissipates Angle is larger, can expand detected tea scope so as to improving precision, simultaneously because the wavelength of purple light is shorter, its penetrability compared with It is weak, so light intensity influence of the concentration of tea on purple light is larger.The purple fluorescence for some strength that LED is sent is transmitted through after tea Photodiode is reached, photodiode will be converted to the light of varying strength by pre-amplification circuit the voltage of varying strength Signal, analog voltage signal after conversion incoming voltage comparator, the digital voltage changed through voltage comparator after treatment Signal is delivered to single chip microcomputer main control system 1 and handled, when simultaneously two comparators transmit low level 0V voltage signal to single-chip microcomputer When port, i.e. tea concentration are less than the concentration set by user, single chip microcomputer main control system 1 is not sent accordingly to warning device 4 Trigger signal, makes it not alarm;When one of comparator transmits low level 0V voltage signal, the high electricity of another comparator transmission When flat 5V voltage signals reach the concentration set by user to one-chip machine port, i.e. tea concentration, single chip microcomputer main control system 1 will Driving warning device 4 is alarmed;It is tea concentration when two comparators transmit high level 5V voltage signal to one-chip machine port simultaneously During beyond 1.1 times of concentration set by user, single chip microcomputer main control system 1 will drive warning device 4 to alarm.The reception of the present invention End uses double light design, and receiving terminal is simultaneously using two photodiodes, and the upper and lower side in teacup inner bag 6 is used for The light that purple LED is sent is received simultaneously, and two analog voltage signals after conversion pass through fortune again by summing and averaging Voltage comparator is reached after calculation again, is relatively had obvious benefits with monochromatic light road using double light design because so solve by It is locally uneven and cause the problem of surveyed tea concentration is inaccurate in tea concentration.Warning device 4 in the present invention includes honeybee Ring device warning circuit 41 and indicator lamp warning circuit 42, in the case of different tea concentrations, it will have different alarm shapes State, can feedback user tea concentration in time information, can if while user is in quiet place, being not desired to noise jamming To select to close buzzer E1, this measure seems very hommization.
Embodiment 2.
As shown in figure 1, a kind of teacup of the device 9 with described monitoring tea concentration, including by lighttight cup body 51 and the cup 5 that constitutes of cup lid 52, the cup body 51 is internally provided with the inner bag 6 of light-permeable, and the purple LED 7D1 is set In the outer wall of inner bag 6, the side relative with the purple LED 7D1 is provided with photodiode 8;
Tea interval is removably provided with the opening of the inner bag 6, the lower section of inner bag 6 is provided with the monitoring tea concentration Device 9, the purple LED 7D1, photodiode 8 respectively with it is described monitoring tea concentration device 9 be connected.
Further, the cup body 51 is provided with the system being connected respectively with the device 9 of the monitoring tea concentration and always opened Close 10, SR 11, concentration arrange knob 12, buzzer 13, the toggle switch 14 for closing the work of buzzer 13, red LED light 15.
Further, the cup body 51 is additionally provided with guiding gutter 16, and the guiding gutter 16 is located at system master switch 10, resetted Button 11, concentration arrange knob 12, buzzer 13, toggle switch 14, the top of red LED indicator lamp 15.
As preferred, the quantity of the photodiode 8 is two, and two photodiodes 8 are respectively arranged at purple LED 7D1 oblique upper and obliquely downward.
The cup body 51 of the teacup of the present embodiment, the shell of cup lid 52 are made up of opaque material, can avoid the light in the external world Influence photodiode 8 to light-receiving, the inner bag 6 of teacup is made up of transparent glass, can allow inside purple LED light Line is passed freely through, and is confined space between inner bag 6 and shell, and to realize heat insulation function, purple LED is in outside teacup inner bag 6 Center, be adjacent to the upper and lower outside the outside of inner bag 6, two office teacup inner bags 6 of photodiode 8, be adjacent on the outside of inner bag 6. The lower section of inner bag 6 is circuit board, the connection for internal circuit.The lower section of the cup body 51 of teacup is guiding gutter 16, guiding gutter 16 It is the groove that caves on the shell of cup body 51, the tea flowed down from rim of a cup caves in inflow guiding gutter 16 and to be avoided by drainage Bedew the electronic component of the lower section of guiding gutter 16.
Embodiment described above only expresses some embodiments of the present invention, and it describes more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (7)

1. a kind of device for monitoring tea concentration, for monitoring tea concentration and being sent out when tea concentration reaches that user sets concentration Go out alarm signal, it is characterised in that:It is described including single chip microcomputer main control system, light emitting devices, optical detection device, warning device Light emitting devices, optical detection device, warning device are connected with single chip microcomputer main control system respectively;
Described optical detection device includes optical detection circuit, concentration counting circuit, concentration comparison circuit, wherein concentration comparison circuit It is connected with the P1.1 mouths of single-chip microcomputer and P1.2 mouthfuls;
The quantity of the optical detection circuit is two, including photodiode D2, photodiode D3, LF356 integrated transporting discharging core Piece, wherein, first LF356 chips A1 inverting input pin 2 passes through resistance R3 and electric capacity C1 earths, positive input The connection photodiode of pin 3 D2 minus earth is held, output pin 6 accesses second LF356 chips A2 by resistance R5 Pin 2, LF356 chips A2 pin 3 is grounded, and output pin 6 feeds back to first LF356 chips A1 pin 3, and its is anti- It is fed back to road in parallel for resistance R4 and electric capacity C2, output pin 6 connects the 3rd LF356 chips A3 pin 2 by resistance R7, LF356 chips A3 pin 3 is grounded by resistance R9, and its output pin 6 feeds back to pin 2 by resistance R8, and output end is led to Cross electric capacity C4 output analog voltage signal VS1s;
The concentration counting circuit, by LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chips A8 and corresponding resistance, electricity Hold composition, two analog voltage signal VS1s and VS2 of the optical detection circuit connect LM324 each via resistance R17 and R19 Chip A7 normal phase input end pin 3, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 is grounded by resistance R20, Output pin 1 connects second LM324 integrated transporting discharging chips A8 pin 3 by electric capacity C9, while passing through feedback resistance R18 Take back A7 pin 3;LM324 integrated transporting discharging chips A8 output pin 1 takes back pin 2, composition electricity by feedback resistance R22 Follower is pressed, output pin 1 is grounded by resistance R23 and R24, and voltage output is used as using two resistance R23 and R24 centre End, analog voltage signal VS3 is exported by electric capacity C10;
The concentration comparison circuit is connected with the P1.1 mouths of single chip microcomputer main control system 1 and P1.2 mouthfuls, including LM324 integrated transporting discharging cores Piece A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage-regulator diode D4, voltage-regulator diode D5, the concentration are calculated The analog voltage signal VS3 of circuit is connected to LM324 chips A9 inverting input pin 2 by resistance R27, and normal phase input end draws Pin 3 is grounded by resistance R25, R26 and R28, and output pin 1 is grounded by resistance R31 and voltage-regulator diode D4, by digital electricity Press signal VS4 input single-chip microcomputer P1.1 mouths;The voltage signal VS3 of the concentration counting circuit is connected to second by resistance R29 LM324 chips A10 pin 2, pin 3 is grounded by resistance R26 and R30, and output pin 1 passes through resistance R32 and voltage stabilizing two Pole pipe D5 is grounded, the LM324 chips that digital voltage signal VS5 is inputted in P1.2 mouthfuls of single-chip microcomputer, described concentration comparison circuit Power end pin 4 connect 5V voltage sources, pin 11 is grounded, and the slide rheostat RE in the circuit is concentration arrange knob;
Described light emitting devices and the P1.0 mouths of single chip microcomputer main control system are connected, and purple LED is controlled by single chip microcomputer main control system Lamp D1's is luminous, and wherein LED D1 negative electrode connects the collector junction c pin of NPN triode Q1, and anode connects electricity by resistance R2 Source, triode Q1 base stage b pin connects the P1.0 mouths of single chip microcomputer main control system, emitter junction e-pin ground connection, resistance by resistance R1 R2 plays metering function to protect purple LED D1.
2. a kind of device for monitoring tea concentration according to claim 1, it is characterised in that:Described warning device includes buzzing Device warning circuit and indicator lamp warning circuit, wherein, the P1.3 mouths connection of buzzer alarm circuit and single chip microcomputer main control system refers to Show that the P1.4 mouths of light alarm circuit and single chip microcomputer main control system are connected;
In the buzzer alarm circuit, active buzzer E1 is used, the positive pole of buzzer connects electricity by resistance R34 Source, negative pole connects triode Q2 collector junction c pin, and triode Q2 base stage b pin connects single-chip microcomputer by resistance R33 P1.3 mouthfuls, emitter junction e-pin ground connection, resistance R34 plays metering function to protect buzzer E1, wherein, switch S2 is buzzer Switch;
The negative electrode connecting triode Q3 of the red LED lamp D6 of indicator lamp warning circuit colelctor electrode c pins, anode passes through electricity Resistance R36 connects with the mains, and triode Q3 b pins connect the P1.4 mouths of single-chip microcomputer, e pins ground connection, resistance R36 by resistance R35 Metering function is played to protect red LED lamp D6.
3. a kind of teacup of the device of the monitoring tea concentration with described in claim 1, it is characterised in that:Including by light tight The cup that constitutes of cup body and cover, the cup body is internally provided with the inner bag of light-permeable, in the purple LED D1 is arranged at The outer wall of courage, photodiode is provided with the side relative with the purple LED D1;
The dress that the monitoring tea concentration is provided with below tea interval, inner bag is removably provided with the opening of the inner bag Put, the device of the purple LED D1, photodiode respectively with the monitoring tea concentration is connected.
4. the teacup of the device according to claim 3 with monitoring tea concentration, it is characterised in that:The cup body is set Have respectively with it is described monitoring tea concentration device be connected system master switch, SR, concentration arrange knob, buzzer, Toggle switch, red LED indicator lamp for closing buzzer work.
5. the teacup of the device according to claim 4 with monitoring tea concentration, it is characterised in that:The cup body is also set It is equipped with guiding gutter, the guiding gutter is located at system master switch, SR, concentration arrange knob, buzzer, toggle switch, red The top of color LED light.
6. the teacup of the device according to claim 3 with monitoring tea concentration, it is characterised in that:The pole of photoelectricity two The quantity of pipe is two, and two photodiodes are respectively arranged at the oblique upper and obliquely downward of purple LED D1.
7. the teacup of the device according to claim 3 with monitoring tea concentration, it is characterised in that:The bottom of the tea interval Portion is provided with filter screen.
CN201410532410.0A 2014-10-10 2014-10-10 A kind of device for monitoring tea concentration and the teacup with the device Expired - Fee Related CN104297168B (en)

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CN108507979B (en) * 2018-05-29 2020-11-24 义乌兰思体育用品有限公司 Method for measuring concentration of saline water and sugar water based on intelligent water cup for kitchen
CN109512228A (en) * 2018-12-13 2019-03-26 佛山科学技术学院 A kind of vacuum cup of carrying liqs Concentration Testing function
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