CN104297168A - Device for monitoring tea concentration and tea cup with same - Google Patents
Device for monitoring tea concentration and tea cup with same Download PDFInfo
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- CN104297168A CN104297168A CN201410532410.0A CN201410532410A CN104297168A CN 104297168 A CN104297168 A CN 104297168A CN 201410532410 A CN201410532410 A CN 201410532410A CN 104297168 A CN104297168 A CN 104297168A
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Abstract
The invention relates to the technical field of tea concentration detection, and particularly relates to a device for monitoring the tea concentration and a tea cup with same. A singlechip main control system mainly comprises an AT89C51 single chip microcomputer and a plurality of peripheral circuits and is used for controlling the coordination operation of a light emitting device, a light detection device and an alarming device; light rays emitted by the light emitting device penetrates through tea and then are received by the light detecting device, and a receiving signal is transmitted to the singlechip main control system for analysis; when the light detection device detects that the tea concentration reaches the concentration set by users, the alarming device alarms so as to remind users of drinking tea timely, and great convenience is brought to users; the tea cup with the device for monitoring the tea concentration is simple in structure, convenient to use and carry, and is high in practicability.
Description
Technical field
The present invention relates to tea concentration Detection Techniques field, be specifically related to a kind ofly monitor the device of tea concentration and there is the teacup of this device.
Background technology
The concentration of tea not only affects tea perfume and the mouthfeel of cuppa, and also affect the nutritional labeling of tea, research shows that the tea of excessive concentrations affects the absorption of human body to iron in addition, and concentration and the health of tea have close ties.In daily life, people rest in the observation of naked eyes to a great extent to the judgement of tea concentration, are judged by the color of tea, but this method out of true and expend time in.Now; the people be in fast pace life particularly often drink tea to refresh oneself the staff that office is busy during operation; they have no time to stop work on hand to observe the concentration of tea, so often there will be the problem of tea excessive concentration usually.
In order to avoid infusion of tea causes the forfeiture of tea excessive concentration and nutritional labeling too for a long time, occur the teacup that some can control tea concentration in the market, but they do not possess the function of monitoring tea concentration automatically, but need user to observe the color of tea every now and then with eye, and then in time tealeaves is separated with tea, this method not only wastes a lot of times of user, and the subjective judgement that there is user accurately can not determine the shortcoming of tea concentration, so lack good Consumer's Experience.
Summary of the invention
The object of the invention is to provide a kind of device of monitoring tea concentration for the deficiencies in the prior art, utilize optical sensing technology and tea concentration can affect the principle monitoring tea concentration of light signal transmissivity, when the concentration monitored reaches the concentration that user arranges, will report to the police and drink tea in time with reminding user.After user obtains warning message, by tea interval, tealeaves can be taken out, realize tealeaves and be separated with tea and drink tea, so both can not affect the work in user's hand, user can be allowed again to drink the tea oneself liking concentration, bring great convenience to user.
Another object of the present invention is to provide a kind of teacup with the device of monitoring tea concentration, easy to use, practical.
The present invention is achieved through the following technical solutions this object:
Monitor a device for tea concentration, comprise single-chip microcomputer master control system, light emitting devices, optical detection device, warning device, described light emitting devices, optical detection device, warning device are connected with single-chip microcomputer master control system respectively.
Described single-chip microcomputer master control system is mainly made up of a slice AT89C51 single-chip microcomputer and some peripheral circuits, for controlling the co-ordination of each several part device, is placed in the below of teacup inner bag.
Described light emitting devices is connected with the P1.0 mouth of single-chip microcomputer master control system; the luminescence of purple LED D1 is controlled by single-chip microcomputer master control system; wherein the negative electrode of LED D1 connects the collector junction c pin of NPN triode Q1; anode is connected with the mains by resistance R2; the base stage b pin of triode Q1 passes through the P1.0 mouth of resistance R1 order sheet owner Ore-controlling Role; emitter junction e pin ground connection, resistance R2 plays metering function to protect purple LED D1.
Wherein, described optical detection device comprises photodetection circuit, concentration counting circuit, concentration comparator circuit, and wherein the P1.1 mouth of concentration comparator circuit and single-chip microcomputer and P1.2 mouth are connected;
The quantity of described photodetection circuit is two, comprise photodiode D2, photodiode D3, LF356 integrated transporting discharging chip, wherein, the inverting input pin 2 of first LF356 chip A1 is by resistance R3 and electric capacity C1 earth, normal phase input end pin 3 connects the plus earth of photodiode D2, output terminal pin 6 accesses the pin 2 of second LF356 chip A2 by resistance R5, pin 3 ground connection of LF356 chip A2, output terminal pin 6 feeds back to the pin 3 of first LF356 chip A1, its backfeed loop is that resistance R4 and electric capacity C2 is in parallel, output terminal pin 6 connects the pin 2 of the 3rd LF356 chip A3 by resistance R7, the pin 3 of LF356 chip A3 is by resistance R9 ground connection, its output terminal pin 6 feeds back to pin 2 by resistance R8, output terminal exports analog voltage signal VS1 by electric capacity C4,
Described concentration counting circuit, be made up of LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chip A8 and corresponding resistance, electric capacity, two analog voltage signal VS1 and VS2 of described light detection device connect the normal phase input end pin 3 of LM324 chip A7 each via resistance R17 and R19, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 is by resistance R20 ground connection, output terminal pin 1 connects the pin 3 of second LM324 integrated transporting discharging chip A8 by electric capacity C9, is taken back the pin 3 of A7 by feedback resistance R18 simultaneously; The output terminal pin 1 of LM324 integrated transporting discharging chip A8 takes back pin 2 by feedback resistance R22, composition voltage follower, output terminal pin 1, by resistance R23 and R24 ground connection, using the centre of two resistance R23 and R24 as voltage output end, exports analog voltage signal VS3 by electric capacity C10;
P1.1 mouth and the P1.2 mouth of described concentration comparator circuit and single-chip microcomputer master control system are connected, comprise LM324 integrated transporting discharging chip A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage stabilizing diode D4, voltage stabilizing diode D5, the analog voltage signal VS3 of described concentration counting circuit receives the inverting input pin 2 of LM324 chip A9 by resistance R27, normal phase input end pin 3 is by resistance R25, R26 and R28 ground connection, digital voltage signal VS4, by resistance R31 and voltage stabilizing diode D4 ground connection, is inputted single-chip microcomputer P1.1 mouth by output terminal pin 1; The voltage signal VS3 of described concentration counting circuit receives the pin 2 of second LM324 chip A10 by resistance R29, pin 3 is by resistance R26 and R30 ground connection, output terminal pin 1 is by resistance R32 and voltage stabilizing diode D5 ground connection, digital voltage signal VS5 is inputted single-chip microcomputer P1.2 mouth, the power end pin 4 of the LM324 chip in described concentration comparator circuit connects 5V voltage source, pin 11 ground connection, the slide rheostat RE in this circuit is concentration and arranges knob.
Wherein, described warning device comprises buzzer alarm circuit and pilot lamp warning circuit, and wherein, buzzer alarm circuit is connected with the P1.3 mouth of single-chip microcomputer master control system, and pilot lamp warning circuit is connected with the P1.4 mouth of single-chip microcomputer master control system;
In described buzzer alarm circuit, that adopt is active buzzer E1, the positive pole of hummer is connected with the mains by resistance R34, negative pole connects the collector junction c pin of triode Q2, the base stage b pin of triode Q2 connects the P1.3 mouth of single-chip microcomputer by resistance R33, emitter junction e pin ground connection, and resistance R34 plays metering function to protect hummer E1, wherein, switch S 2 is the switch of hummer;
The collector c pin of the negative electrode connecting triode Q3 of the red LED lamp D6 of described pilot lamp warning circuit; anode is connected with the mains by resistance R36; the b pin of triode Q3 connects the P1.4 mouth of single-chip microcomputer by resistance R35; e pin ground connection, resistance R36 plays metering function to protect red LED lamp D6.
A kind of teacup with the device of described monitoring tea concentration, comprise the cup be made up of lighttight cup body and bowl cover, described cup body inside is provided with the inner bag of light-permeable, described purple LED D1 is arranged at the outer wall of inner bag, and the side relative with described purple LED D1 is provided with photodiode;
The opening part of described inner bag is dismountable is provided with tea interval, and the below of inner bag is provided with the device of described monitoring tea concentration, and described purple LED D1, photodiode are connected with the device of described monitoring tea concentration respectively.
Further, described cup body be provided with the system master switch, reset button, the concentration that are connected with the device of described monitoring tea concentration respectively arrange knob, hummer, for closing toggle switch, the red LED pilot lamp of hummer work.
Further, described cup body is also provided with diversion trench, the top that described diversion trench is positioned at system master switch, reset button, concentration arrange knob, hummer, toggle switch, red LED pilot lamp.
As preferably, the quantity of described photodiode is two, and two photodiodes are arranged at oblique upper and the oblique below of purple LED D1 respectively.
Relative to prior art, beneficial effect of the present invention is: single-chip microcomputer master control system of the present invention is mainly made up of a slice AT89C51 single-chip microcomputer and some peripheral circuits, for controlling light emitting devices, optical detection device, warning device co-ordination, the light that light emitting devices sends is received by optical detection device through after tea, and Received signal strength is flowed to single-chip microcomputer master control system and analyze, when optical detection device detects that tea concentration reaches the concentration of user's setting, described warning device will be reported to the police and be drunk tea in time with reminding user, great convenience is brought to user, the tea cup structure with the device of described monitoring tea concentration is simple, it is easy to carry, practical to use.
Accompanying drawing explanation
Fig. 1 is the structural representation with the teacup of monitoring tea concentration device of the present invention.
Fig. 2 is the circuit theory diagrams of monitoring tea concentration device of the present invention.
Fig. 3 is the circuit theory diagrams of light emitting devices of the present invention.
Fig. 4 is the circuit theory diagrams of optical detection device of the present invention.
Fig. 5 is the circuit theory diagrams of warning device of the present invention.
Fig. 6 applies the workflow diagram that the device of monitoring tea concentration carries out tea concentration monitor.
In figure: 1-single-chip microcomputer master control system; 2-light emitting devices; 3-optical detection device; 31-photodetection circuit; 32-concentration counting circuit; 33-concentration comparator circuit; 4-warning device; 41-buzzer alarm circuit; 42-pilot lamp warning circuit; 5-cup; 51-cup body; 52-bowl cover; 6-inner bag; 7-purple LED; 8-photodiode; 9-monitors the device of tea concentration; 10-system master switch; 11-reset button; 12-concentration arranges knob; 13-hummer; 14-toggle switch; 15-red LED pilot lamp; 16-diversion trench.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
Embodiment 1.
As shown in Figure 2, the device of monitoring tea concentration of the present invention comprises single-chip microcomputer master control system 1, light emitting devices 2, optical detection device 3, warning device 4, and described light emitting devices 2, optical detection device 3, warning device 4 are connected with single-chip microcomputer master control system 1 respectively.
Described single-chip microcomputer master control system 1 is made up of a slice AT89C51 single-chip microcomputer and some peripheral circuits, comprise reset circuit and crystal oscillating circuit, described reset circuit connects the RST pin of single-chip microcomputer, crystal oscillating circuit connects XTAL1 and the XTAL2 pin of single-chip microcomputer, and single-chip microcomputer master control system 1 controls this three device co-ordinations.
As shown in Figure 3; described light emitting devices 2 comprises purple LED D1, NPN triode, current-limiting resistance; described light emitting devices 2 is connected with the P1.0 mouth of single-chip microcomputer master control system 1; the purple LED D1 being controlled light emitting devices 2 by single-chip microcomputer master control system 1 is luminous; wherein the negative electrode of purple LED D1 connects the collector junction c pin of NPN triode Q1; anode is connected with the mains by resistance R2; the base stage b pin of triode Q1 passes through the P1.0 mouth of resistance R1 order sheet owner Ore-controlling Role 1; emitter junction e pin ground connection, resistance R2 plays metering function to protect purple LED D1.
What the present invention adopted is purple LED, is that its penetrability is more weak because the wavelength of purple light is shorter, so the concentration of tea is comparatively large on light intensity impact, and the angle of divergence of fluorescence that LED sends is comparatively large, is applicable to double light design of the present invention.Because the accurate bidirectional interface driving force of single-chip microcomputer is more weak; the present invention adopts NPN triode to improve its driving force; current-limiting resistance R2 is the effect playing protection LED; after the master switch of start up system; single-chip microcomputer will give P1.0 mouth high level, drives purple LED to send the purple fluorescence of determining intensity.
As shown in Figure 4, described optical detection device 3 comprises photodetection circuit 31, concentration counting circuit 32, concentration comparator circuit 33, and wherein the P1.1 mouth of concentration comparator circuit 33 and single-chip microcomputer and P1.2 mouth are connected; This device, for accepting the light from light emitting devices, is converted into voltage signal and processes it.
The quantity of described photodetection circuit 31 is two, comprise photodiode D2, photodiode D3, LF356 integrated transporting discharging chip, wherein, the inverting input pin 2 of first LF356 chip A1 is by resistance R3 and electric capacity C1 earth, normal phase input end pin 3 connects the plus earth of photodiode D2, output terminal pin 6 accesses the pin 2 of second LF356 chip A2 by resistance R5, pin 3 ground connection of LF356 chip A2, output terminal pin 6 feeds back to the pin 3 of first LF356 chip A1, its backfeed loop is that resistance R4 and electric capacity C2 is in parallel, output terminal pin 6 connects the pin 2 of the 3rd LF356 chip A3 by resistance R7, the pin 3 of LF356 chip A3 is by resistance R9 ground connection, its output terminal pin 6 feeds back to pin 2 by resistance R8, output terminal exports analog voltage signal VS1 by electric capacity C4,
The present invention adopts LF356 chip, is because LF356 has high input impedance and low input noise electric current, can amplifies the output current of photodiode better.For first circuit, resistance R3 is to remove the DC error caused because resistance R4 is excessive, electric capacity C1 is the noise in order to remove resistance R2, and LF356 chip A2 and resistance R5, R6 and electric capacity C3 form internal feedback circuit, wherein R5, R6 and C3 control A2 gain response characteristic.In order to reduce noise band, the resistance of R6 can be allowed to be far smaller than the resistance of R5.Resistance R4 is feedback resistance, the output current of photodiode is converted to voltage signal, C2 is for removing the noise of R3,3rd LF356 chip forms anti-phase proportional amplifier, the voltage signal of output can be transferred on the occasion of, and suitable amplification voltage, its enlargement factor can be determined by corresponding resistance, and its output terminal adds that electric capacity C4 can eliminate the impact of DC signal on next stage circuit.Present invention uses two photodetection circuit 31, for accepting the light that light emitting devices sends simultaneously.
Described concentration counting circuit 32 is made up of LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chip A8 and corresponding resistance, electric capacity, two analog voltage signal VS1 and VS2 of described light detection device connect the normal phase input end pin 3 of LM324 chip A7 each via resistance R17 and R19, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 is by resistance R20 ground connection, output terminal pin 1 connects the pin 3 of second LM324 integrated transporting discharging chip A8 by electric capacity C9, is taken back the pin 3 of A7 by feedback resistance R18 simultaneously; The output terminal pin 1 of LM324 integrated transporting discharging chip A8 takes back pin 2 by feedback resistance R22, composition voltage follower, output terminal pin 1, by resistance R23 and R24 ground connection, using the centre of two resistance R23 and R24 as voltage output end, exports analog voltage signal VS3 by electric capacity C10;
The Part I of this circuit is homophase adder operation circuit, object is added by two voltage signals from light detection device, be one to make the coefficient of addend, the resistance of resistance R17, R18 and R19 can be allowed equal, simultaneously in order to ensure the symmetry of input stage, the resistance of R20 can be allowed to equal R17, the resistance of R18 and R19 three parallel connection, in order to make the direct current signal of homophase adding circuit not affect next stage circuit, electric capacity C9 can be added at output terminal.The Part II of this circuit is voltage follower, its objective is the carrying load ability improving homophase adding circuit, in order to make the direct current signal of voltage follower not affect next stage circuit, can add electric capacity C10 at output terminal.The output terminal of voltage follower is connected the identical resistance R23 of two resistances and R24 ground connection, using the voltage in the middle of two resistance as output voltage, by the computing that electric resistance partial pressure can be averaged to the output voltage of homophase adder operation circuit, the voltage signal drawn after the process of concentration counting circuit 32 more can reflect the concentration of tea.
P1.1 mouth and the P1.2 mouth of described concentration comparator circuit 33 and single-chip microcomputer master control system 1 are connected, comprise LM324 integrated transporting discharging chip A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage stabilizing diode D4, voltage stabilizing diode D5, the analog voltage signal VS3 of described concentration counting circuit receives the inverting input pin 2 of LM324 chip A9 by resistance R27, normal phase input end pin 3 is by resistance R25, R26 and R28 ground connection, digital voltage signal VS4, by resistance R31 and voltage stabilizing diode D4 ground connection, is inputted single-chip microcomputer P1.1 mouth by output terminal pin 1; The voltage signal VS3 of described concentration counting circuit 32 receives the pin 2 of second LM324 chip A10 by resistance R29, pin 3 is by resistance R26 and R30 ground connection, output terminal pin 1 is by resistance R32 and voltage stabilizing diode D5 ground connection, digital voltage signal VS5 is inputted single-chip microcomputer P1.2 mouth, the power end pin 4 of the LM324 chip in described concentration comparator circuit 33 connects 5V voltage source, pin 11 ground connection, the slide rheostat RE in this circuit is concentration and arranges knob;
Be made up of LM324 chip and singly limit comparer, the reference voltage of comparer derives from the dividing potential drop of the voltage source of 5V, wherein the resistance of resistance R25 is about ten times of resistance R26 resistance, ensure that the voltage of R25 lower end is 0.9 times of upper terminal voltage, utilize the voltage of R25 upper end and the voltage of lower end respectively as the reference voltage of two voltage comparators, wherein slide rheostat RE can change the size of resistance both end voltage, arranges knob corresponding to concentration.When the output voltage of concentration counting circuit is greater than the voltage set by user, namely the concentration of tea not yet reaches the concentration that user is arranged, and voltage comparator A9 and A10 simultaneously output low level 0V delivers to single-chip microcomputer P1.1 mouth and P1.2 mouth processes; When voltage set by user of the output voltage of concentration counting circuit, namely the concentration of tea reaches the concentration that user is arranged, voltage comparator A9 output high level 5V delivers to single-chip microcomputer P1.1 mouth and processes, and voltage comparator A10 output low level 0V delivers to single-chip microcomputer P1.2 mouth and processes; When 0.9 times of the voltage of output voltage set by user of concentration counting circuit, when namely the concentration of tea exceeds 1.1 times of concentration that user arranges, voltage comparator A9 and A10 exports high level 5V simultaneously and delivers to single-chip microcomputer P1.1 mouth and P1.2 mouth processes.Wherein, the voltage stabilizing parameter of voltage stabilizing diode is 5V, the output voltage stabilization of comparer can be allowed at 0V or 5V, be convenient to single-chip microcomputer and process it.
As shown in Figure 5, described warning device 4 comprises buzzer alarm circuit 41 and pilot lamp warning circuit 42, wherein, buzzer alarm circuit 41 is connected with the P1.3 mouth of single-chip microcomputer master control system 1, and pilot lamp warning circuit 42 is connected with the P1.4 mouth of single-chip microcomputer master control system 1;
In described buzzer alarm circuit 41, that adopt is active buzzer E1, the positive pole of hummer E1 is connected with the mains by resistance R34, negative pole connects the collector junction c pin of triode Q2, the base stage b pin of triode Q2 connects the P1.3 mouth of single-chip microcomputer by resistance R33, emitter junction e pin ground connection, and resistance R34 plays metering function to protect hummer E1, wherein, switch S 2 is the switch of hummer E1; Buzzer alarm circuit 41 is controlled by the P1.3 mouth of single-chip microcomputer master control system 1, and when P1.3 mouth exports high level and switch S 2 closes, buzzer alarm circuit 41 is in alarm condition.When switch S 2 is closed, when the concentration of tea is lower than concentration set by user, single-chip microcomputer master control system 1 controls hummer E1 not sounding, when the concentration of tea reaches the concentration set by user, single-chip microcomputer master control system 1 controls hummer E1 sound per second once, when the concentration of tea exceeds 1.1 times of concentration set by user, single-chip microcomputer master control system 1 controls hummer E1 sound per second three times, can the information of feedback user tea concentration in time.
The collector c pin of the negative electrode connecting triode Q3 of the red LED lamp D6 of described pilot lamp warning circuit 42, anode is connected with the mains by resistance R36, the b pin of triode Q3 connects the P1.4 mouth of single-chip microcomputer by resistance R35, e pin ground connection, resistance R36 plays metering function to protect red LED lamp D6; When P1.4 mouth exports high level, pilot lamp warning circuit 42 is in alarm condition, and this pilot lamp warning circuit 42NPN triode is the driving force improving one-chip machine port equally.When the concentration of tea is lower than concentration set by user, it is not luminous that single-chip microcomputer master control system 1 controls red LED, when the concentration of tea reaches the concentration set by user, single-chip microcomputer master control system 1 controls red LED luminescence per second once, when the concentration of tea exceeds 1.1 times of concentration set by user, it is always luminous that single-chip microcomputer master control system 1 controls LED, can the information of feedback user tea concentration in time.
As shown in Figure 6, the workflow that the device 9 applying monitoring tea concentration of the present invention carries out tea concentration monitor is: first carry out system initialization, then single-chip microcomputer master control system 1 controls LED D1 and sends purple fluorescence, then single-chip microcomputer master control system 1 receives the digital voltage signal after being changed by optical detection device 3 and judges, judge whether voltage instruction existing concentration is less than setting concentration, if, then single-chip microcomputer master control system 1 controls pilot lamp and does not work, hummer E1 not sound, then enters reset system.If not, then continue to judge whether voltage instruction existing concentration is greater than setting 1.1 times of concentration, if not, then to control pilot lamp per second once bright for single-chip microcomputer master control system 1, and control hummer E1 sound per second once, then enters reset system.If so, then single-chip microcomputer master control system 1 to control pilot lamp always bright, hummer E1 sound per second three times, then enters reset system.After judging three kinds of states, finally carry out reset system judgement, if reset system, then retrieval system initialization, repeats above-mentioned steps; If do not need reset system, then turn back to single-chip microcomputer and receive this step of digital voltage signal after being changed by optical detection device.
What light emitting devices 2 of the present invention adopted is purple LED, due to the only fluorescence that purple LED sends, its angle of divergence is larger, detected tea scope can be expanded thus improve precision, simultaneously because the wavelength of purple light is shorter, its penetrability is more weak, so the light intensity impact of the concentration of tea on purple light is larger.The purple fluorescence of the some strength that LED sends arrives photodiode transmitted through after tea, photodiode will be converted to the light of varying strength the voltage signal of varying strength by pre-amplification circuit, analog voltage signal after conversion imports voltage comparator into after treatment, digital voltage signal through voltage comparator conversion is delivered to single-chip microcomputer master control system 1 and is processed, when two comparers transmit low level 0V voltage signal to one-chip machine port simultaneously, namely when tea concentration is less than the concentration set by user, single-chip microcomputer master control system 1 does not send corresponding trigger pip to warning device 4, it is made not report to the police, when one of them comparer transmits low level 0V voltage signal, another comparer transmits high level 5V voltage signal to one-chip machine port, and when namely tea concentration reaches the concentration set by user, single-chip microcomputer master control system 1 will drive warning device 4 to report to the police, when two comparers transmit simultaneously high level 5V voltage signal exceed 1.1 times of concentration set by user to one-chip machine port and tea concentration time, single-chip microcomputer master control system 1 will drive warning device 4 to report to the police.What receiving end of the present invention adopted is double light design, receiving end uses two photodiodes simultaneously, be in the upper and lower side of teacup inner bag 6, for receiving the light that purple LED sends simultaneously, two analog voltage signals after conversion pass through again through suing for peace and reaching voltage comparator again after the computing of averaging, double light design is adopted to compare with monochromatic light road and have obvious benefit, because solve like this because tea concentration local is uneven and cause the inaccurate problem of surveyed tea concentration.Warning device 4 in the present invention comprises buzzer alarm circuit 41 and pilot lamp warning circuit 42, when different tea concentration, different alarm condition will be had, can the information of feedback user tea concentration in time, if user is in quiet place simultaneously, do not want there is noise, can select to close hummer E1, this measure seems very hommization.
Embodiment 2.
As shown in Figure 1, a kind of teacup with the device 9 of described monitoring tea concentration, comprise the cup 5 be made up of lighttight cup body 51 and bowl cover 52, described cup body 51 inside is provided with the inner bag 6 of light-permeable, described purple LED 7D1 is arranged at the outer wall of inner bag 6, and the side relative with described purple LED 7D1 is provided with photodiode 8;
The opening part of described inner bag 6 is dismountable is provided with tea interval, and the below of inner bag 6 is provided with the device 9 of described monitoring tea concentration, and described purple LED 7D1, photodiode 8 are connected with the device 9 of described monitoring tea concentration respectively.
Further, described cup body 51 be provided with the system master switch 10, reset button 11, the concentration that are connected with the device 9 of described monitoring tea concentration respectively arrange knob 12, hummer 13, for closing toggle switch 14, red LED pilot lamp 15 that hummer 13 works.
Further, described cup body 51 is also provided with diversion trench 16, the top that described diversion trench 16 is positioned at system master switch 10, reset button 11, concentration arrange knob 12, hummer 13, toggle switch 14, red LED pilot lamp 15.
As preferably, the quantity of described photodiode 8 is two, and two photodiodes 8 are arranged at oblique upper and the oblique below of purple LED 7D1 respectively.
Cup body 51, bowl cover 52 shell of the teacup of the present embodiment are made up of opaque material, can avoid extraneous light affect photodiode 8 to light-receiving, the inner bag 6 of teacup is made up of transparent glass, the light of inner purple LED can be allowed freely to pass through, and is confined space between inner bag 6 and shell, to realize heat insulation function, purple LED is in the central authorities of teacup inner bag 6 outside, be adjacent to outside inner bag 6, the upper and lower of teacup inner bag 6 outside, two photodiode 8 offices, is adjacent to outside inner bag 6.The below of inner bag 6 is circuit board, for the connection of internal circuit.The below of the cup body 51 of teacup is diversion trench 16, and diversion trench 16 is grooves that cave on glass body 51 shell, and the tea flowed down from rim of a cup caves in diversion trench 16 by flowing into and avoided the electronic component below adhesional wetting diversion trench 16 by drainage.
The above embodiment only have expressed some embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. monitor a device for tea concentration, it is characterized in that: comprise single-chip microcomputer master control system, light emitting devices, optical detection device, warning device, described light emitting devices, optical detection device, warning device are connected with single-chip microcomputer master control system respectively.
2. a kind of device of monitoring tea concentration according to claim 1; it is characterized in that: described light emitting devices is connected with the P1.0 mouth of single-chip microcomputer master control system; the luminescence of purple LED D1 is controlled by single-chip microcomputer master control system; wherein the negative electrode of LED D1 connects the collector junction c pin of NPN triode Q1; anode is connected with the mains by resistance R2; the base stage b pin of triode Q1 passes through the P1.0 mouth of resistance R1 order sheet owner Ore-controlling Role; emitter junction e pin ground connection, resistance R2 plays metering function to protect purple LED D1.
3. a kind of device of monitoring tea concentration according to claim 1, is characterized in that: described optical detection device comprises photodetection circuit, concentration counting circuit, concentration comparator circuit, and wherein the P1.1 mouth of concentration comparator circuit and single-chip microcomputer and P1.2 mouth are connected;
The quantity of described photodetection circuit is two, comprise photodiode D2, photodiode D3, LF356 integrated transporting discharging chip, wherein, the inverting input pin 2 of first LF356 chip A1 is by resistance R3 and electric capacity C1 earth, normal phase input end pin 3 connects the plus earth of photodiode D2, output terminal pin 6 accesses the pin 2 of second LF356 chip A2 by resistance R5, pin 3 ground connection of LF356 chip A2, output terminal pin 6 feeds back to the pin 3 of first LF356 chip A1, its backfeed loop is that resistance R4 and electric capacity C2 is in parallel, output terminal pin 6 connects the pin 2 of the 3rd LF356 chip A3 by resistance R7, the pin 3 of LF356 chip A3 is by resistance R9 ground connection, its output terminal pin 6 feeds back to pin 2 by resistance R8, output terminal exports analog voltage signal VS1 by electric capacity C4,
Described concentration counting circuit, be made up of LM324 integrated transporting discharging chip A7, LM324 integrated transporting discharging chip A8 and corresponding resistance, electric capacity, two analog voltage signal VS1 and VS2 of described light detection device connect the normal phase input end pin 3 of LM324 chip A7 each via resistance R17 and R19, the inverting input pin 2 of LM324 integrated transporting discharging chip A7 is by resistance R20 ground connection, output terminal pin 1 connects the pin 3 of second LM324 integrated transporting discharging chip A8 by electric capacity C9, is taken back the pin 3 of A7 by feedback resistance R18 simultaneously; The output terminal pin 1 of LM324 integrated transporting discharging chip A8 takes back pin 2 by feedback resistance R22, composition voltage follower, output terminal pin 1, by resistance R23 and R24 ground connection, using the centre of two resistance R23 and R24 as voltage output end, exports analog voltage signal VS3 by electric capacity C10;
P1.1 mouth and the P1.2 mouth of described concentration comparator circuit and single-chip microcomputer master control system 1 are connected, comprise LM324 integrated transporting discharging chip A9, LM324 integrated transporting discharging chip A10, slide rheostat RE, voltage stabilizing diode D4, voltage stabilizing diode D5, the analog voltage signal VS3 of described concentration counting circuit receives the inverting input pin 2 of LM324 chip A9 by resistance R27, normal phase input end pin 3 is by resistance R25, R26 and R28 ground connection, digital voltage signal VS4, by resistance R31 and voltage stabilizing diode D4 ground connection, is inputted single-chip microcomputer P1.1 mouth by output terminal pin 1; The voltage signal VS3 of described concentration counting circuit receives the pin 2 of second LM324 chip A10 by resistance R29, pin 3 is by resistance R26 and R30 ground connection, output terminal pin 1 is by resistance R32 and voltage stabilizing diode D5 ground connection, digital voltage signal VS5 is inputted single-chip microcomputer P1.2 mouth, the power end pin 4 of the LM324 chip in described concentration comparator circuit connects 5V voltage source, pin 11 ground connection, the slide rheostat RE in this circuit is concentration and arranges knob.
4. a kind of device of monitoring tea concentration according to claim 1, it is characterized in that: described warning device comprises buzzer alarm circuit and pilot lamp warning circuit, wherein, buzzer alarm circuit is connected with the P1.3 mouth of single-chip microcomputer master control system, and pilot lamp warning circuit is connected with the P1.4 mouth of single-chip microcomputer master control system;
In described buzzer alarm circuit, that adopt is active buzzer E1, the positive pole of hummer is connected with the mains by resistance R34, negative pole connects the collector junction c pin of triode Q2, the base stage b pin of triode Q2 connects the P1.3 mouth of single-chip microcomputer by resistance R33, emitter junction e pin ground connection, and resistance R34 plays metering function to protect hummer E1, wherein, switch S 2 is the switch of hummer;
The collector c pin of the negative electrode connecting triode Q3 of the red LED lamp D6 of described pilot lamp warning circuit; anode is connected with the mains by resistance R36; the b pin of triode Q3 connects the P1.4 mouth of single-chip microcomputer by resistance R35; e pin ground connection, resistance R36 plays metering function to protect red LED lamp D6.
5. one kind has the teacup of the device of the monitoring tea concentration described in claim 1-4 any one, it is characterized in that: comprise the cup be made up of lighttight cup body and bowl cover, described cup body inside is provided with the inner bag of light-permeable, described purple LED D1 is arranged at the outer wall of inner bag, and the side relative with described purple LED D1 is provided with photodiode;
The opening part of described inner bag is dismountable is provided with tea interval, and the below of inner bag is provided with the device of described monitoring tea concentration, and described purple LED D1, photodiode are connected with the device of described monitoring tea concentration respectively.
6. the teacup with the device of monitoring tea concentration according to claim 5, is characterized in that: described cup body be provided with the system master switch, reset button, the concentration that are connected with the device of described monitoring tea concentration respectively arrange knob, hummer, for closing toggle switch, the red LED pilot lamp of hummer work.
7. the teacup with the device of monitoring tea concentration according to claim 6, it is characterized in that: described cup body is also provided with diversion trench, the top that described diversion trench is positioned at system master switch, reset button, concentration arrange knob, hummer, toggle switch, red LED pilot lamp.
8. the teacup with the device of monitoring tea concentration according to claim 5, is characterized in that: the quantity of described photodiode is two, and two photodiodes are arranged at the oblique upper of purple LED D1 and oblique below respectively.
9. the teacup with the device of monitoring tea concentration according to claim 5, is characterized in that: the bottom of described tea interval is provided with filter screen.
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| CN201410532410.0A CN104297168B (en) | 2014-10-10 | 2014-10-10 | A kind of device for monitoring tea concentration and the teacup with the device |
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| CN201410532410.0A CN104297168B (en) | 2014-10-10 | 2014-10-10 | A kind of device for monitoring tea concentration and the teacup with the device |
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| CN104297168B (en) | 2017-10-13 |
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