CN107860799A - TDS detection means and purifying kettle - Google Patents
TDS detection means and purifying kettle Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 144
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000000523 sample Substances 0.000 claims abstract description 44
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 9
- 210000000476 body water Anatomy 0.000 abstract description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
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- 238000003780 insertion Methods 0.000 description 1
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- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
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Abstract
The invention provides a kind of TDS detection means and purifying kettle, the device includes：MCU controllers, water quality probe, sampling resistor, triggering resistance and power supply；Water quality probe includes first electrode and second electrode, and when water quality probe is inserted in tested water body, power supply, triggering resistance, water quality probe and tested water body form current loop；Trigger signal caused by triggering resistance when MCU controllers are used to obtain to form current loop by its first interface, start the detection pattern of the device；MCU controllers are additionally operable to distinguish the reverse pulse signal of outbound course by first interface and second interface, gather the voltage data between first electrode and second electrode by sampling resistor, export TDS values corresponding with the voltage data.It can so avoid TDS detection means from being constantly in the detection pattern of high power consumption, reduce power consumption, extend the life-span of the device, alleviate polarization phenomena, improve measurement accuracy, reduce the influence to tested water body water quality.
Description
Technical field
The present invention relates to Smart Home technical field, more particularly, to a kind of TDS detection means and purifying kettle.
Background technology
TDS (Total Dissolved Solids, total dissolved solidss), also known as dissolvability solid amount, units of measurement are
PPM (Part Per Million), i.e. mg/litre (mg/L), it shows in 1 liter of water dissolved with how many milligrams of soluble solids.TDS
Value represents dissolved matter impurity content in water, and TDS values are bigger, illustrates that the impurity content in water is big, conversely, the impurity in explanation water
Content is small.
TDS detections refer to the content for measuring the total solid dissolved in water.TDS values and electrical conductivity are proportional, based on this,
The main process of TDS detections is that a pair of electrodes is inserted in water, and after energization in the presence of electric field, charged ion produces one
Determine the movement in direction, the interelectrode aqueous solution is produced electric current, measure two interelectrode voltages, the aqueous solution is scaled by voltage
Electrical conductivity, then TDS values are scaled by electrical conductivity, so as to complete TDS detections.
At present, TDS detections are typically started using battery powered, button active mode, due to manually pressing start button
After starting TDS detection means, regardless of whether needing to carry out TDS detections, TDS detection means is in the mode of operation of high power consumption,
It can so cause that power consumption is big, the usage time of battery is short, the short life of TDS detection means.In addition, for a long time in two electrodes
Upper plus unidirectional voltage can cause polarization phenomena, can produce electrolyte on electrode, influence measurement accuracy and water quality.
The content of the invention
In view of this, it is an object of the invention to provide a kind of TDS detection means and purifying kettle, to reduce power consumption,
Extend the life-span of TDS detection means, and alleviate polarization phenomena, improve measurement accuracy, reduce the influence to tested water body water quality.
In a first aspect, the embodiments of the invention provide a kind of TDS detection means, including：Micro-control unit MCU controllers,
And water quality probe, sampling resistor, triggering resistance and the power supply being connected respectively with the MCU controllers；
The water quality probe includes first electrode and second electrode, the high level end of the power supply and the triggering resistance
One end is connected, and the other end of the triggering resistance is connected with the first electrode, the second electrode and the low electricity of the power supply
Flush end connects, to make the power supply, the triggering resistance, the water quality probe when the water quality probe is inserted in tested water body
Current loop is formed with the tested water body；
The connection end of the triggering resistance and the first electrode is connected with the first interface of the MCU controllers, described
MCU controllers trigger signal caused by triggering resistance when being used to obtain to form current loop by the first interface, is opened
Move the detection pattern of the TDS detection means；
The connection end of the second electrode and the power supply is connected with the second interface of the MCU controllers；The sampling
Resistance is connected between the Sampling Interface of the second electrode and the MCU controllers；The MCU controllers are additionally operable to described
Under detection pattern, the reverse pulse signal of outbound course is distinguished by the first interface and the second interface, and pass through institute
The voltage data between the sampling resistor collection first electrode and the second electrode is stated, output is corresponding with the voltage data
TDS values.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, institute
State the timer that TDS detection means also includes being connected with the MCU controllers；
The MCU controllers are additionally operable to start the timer while detection pattern is started, when receiving
The detection pattern is closed during the interrupt signal for stating timer transmission, and starts the standby mode of the TDS detection means.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, institute
Stating TDS detection means also includes filter circuit, the low level end that the second electrode passes through the filter circuit and the power supply
Connection.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, institute
Stating MCU controllers includes two pulse width modulation (PWM) modules, two PWM modules respectively with the first interface and institute
Second interface is stated to connect one to one；Two PWM modules are used to produce the opposite frequency cycle change of both direction
Pulse signal.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, institute
Stating TDS detection means also includes power supply monitoring module；
The power supply monitoring module is connected with the power supply and the MCU controllers respectively, for being provided for the power supply
Over, and when monitoring that the power supply is in charged state, charging signals are sent to the MCU controllers；Institute
State MCU controllers to be additionally operable to after receiving the charging signals, start the detection pattern of the TDS detection means.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, institute
The USB charging modules that TDS detection means also includes being connected with the power supply are stated, it is the power supply that the USB charging modules, which are used for,
USB charging modes are provided.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 6th of first aspect kind, wherein, institute
Stating TDS detection means also includes display screen；The display screen is connected with the power supply and the MCU controllers respectively, for showing
Show the TDS values.
With reference to the 6th kind of possible embodiment of first aspect, the embodiments of the invention provide the 7th of first aspect kind
Possible embodiment, wherein, the TDS detection means also includes timing module；The timing module respectively with the power supply
Connected with the MCU controllers, for calculating the usage time of the TDS detection means.
With reference to the 7th kind of possible embodiment of first aspect, the embodiments of the invention provide the 8th of first aspect kind
Possible embodiment, wherein, the TDS detection means also includes function button；The function button respectively with the power supply
Connected with the MCU controllers, for providing power on/off function, inquiry into service time function and function of reset.
Second aspect, the embodiment of the present invention also provide a kind of purifying kettle, including kettle body and the TDS such as above-mentioned first aspect
Detection means；The TDS detection means is arranged in the kettle body.
The embodiment of the present invention brings following beneficial effect：
In the embodiment of the present invention, TDS detection means includes：Micro-control unit MCU controllers and respectively with MCU control
Water quality probe, sampling resistor, triggering resistance and the power supply of device connection；Water quality probe includes first electrode and second electrode, in water
When in matter probe insertion tested water body, power supply, triggering resistance, water quality probe and tested water body form current loop, and form electricity
The voltage of the connection end of resistance and first electrode is triggered when flowing back to road from high step-down, produces trigger signal；Trigger resistance and first
The connection end of electrode is connected with the first interface of MCU controllers, and MCU controllers are used to obtain triggering letter by first interface
Number, start the detection pattern of TDS detection means, and under the detection pattern, exported respectively by first interface and second interface
The reverse pulse signal in direction, and the voltage data between first electrode and second electrode is gathered by sampling resistor, output with
TDS values corresponding to the voltage data.So, the automatic start detection pattern after water quality probe meets water, will not be automatic when not meeting water
Start detection pattern, TDS detection means can be avoided to be constantly in the detection pattern of high power consumption, so as to reduce power consumption, prolonged
The life-span of the long device；In TDS detection process, the reverse pulse of outbound course is distinguished by first interface and second interface and believed
Number, polarization phenomena are alleviated, so as to improve measurement accuracy, reduce the influence to tested water body water quality.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the first structural representation of TDS detection means provided in an embodiment of the present invention；
Fig. 2 is the circuit theory diagrams of TDS detection means provided in an embodiment of the present invention；
Fig. 3 is second of structural representation of TDS detection means provided in an embodiment of the present invention；
Fig. 4 is the structural representation of purifying kettle provided in an embodiment of the present invention.
Icon：
110-MCU controllers；111- first interfaces；112- second interfaces；113- Sampling Interfaces；120- water quality probes；
121- first electrodes；122- second electrodes；130- sampling resistors；140- triggers resistance；150- power supplys；301-TDS detects circuit
Module；302- lithium coin cells；303-DW01+8205A lithium pyroelectric monitor modules；304-BQ2057C USB charging modules；305-
SSD1306OLED display modules；306-DS1302 timing modules；41-TDS detection means；42- kettle bodies.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
TDS detections at present are typically started using battery powered, button active mode, regardless of whether needing to carry out TDS inspections
Survey, TDS detection means is in the mode of operation of high power consumption, causes that the usage time of battery is short, the life-span of TDS detection means
It is short.Based on this, a kind of TDS detection means provided in an embodiment of the present invention and purifying kettle, TDS detection means can be avoided to locate always
In the detection pattern of high power consumption, power consumption is reduced, extends the life-span of TDS detection means, and alleviates polarization phenomena, improves and surveys
Accuracy of measurement, reduce the influence to tested water body water quality.
For ease of understanding the present embodiment, a kind of TDS detection means disclosed in the embodiment of the present invention is entered first
Row is discussed in detail.
Embodiment one：
Fig. 1 is the first structural representation of TDS detection means provided in an embodiment of the present invention, as shown in figure 1, the TDS
Detection means includes：MCU (Microcontroller Unit, micro-control unit) controllers 110 and respectively with MCU control
Water quality probe 120, sampling resistor 130, triggering resistance 140 and the power supply 150 that device 110 connects.
Water quality probe 120 includes first electrode 121 and second electrode 122, high level end and the triggering resistance of power supply 150
140 one end connection, the other end of triggering resistance 140 are connected with first electrode 121, second electrode 122 and the low electricity of power supply 150
Flush end connect, with water quality probe 120 insert tested water body in when make power supply 150, triggering resistance 140, water quality probe 120 and by
Survey water body and form current loop.
Triggering resistance 140 and the connection end of first electrode 121 are connected with the first interface 111 of MCU controllers 110, MCU controls
Device 110 processed, which is used to obtain by first interface 111 when forming current loop, triggers trigger signal caused by resistance 140, starts TDS
The detection pattern of detection means.
The connection end of second electrode 122 and power supply 150 is connected with the second interface 112 of MCU controllers 110；Sampling resistor
130 are connected between second electrode 122 and the Sampling Interface 113 of MCU controllers 110；MCU controllers 110 are additionally operable to detecting
Under pattern, the reverse pulse signal of outbound course is distinguished by first interface 111 and second interface 112, and pass through sampling resistor
Voltage data between 130 collection first electrodes 121 and second electrode 122, exports TDS values corresponding with the voltage data.
Specifically, in order to extend the life-span of TDS detection means, the device is provided with two kinds of mode of operations：The inspection of high power consumption
The TDS detections of survey pattern and the standby mode of low-power consumption, in a detection mode device progress high power consumption, in stand-by mode should
Device can only provide some basic clocking capabilitys, with reduce the power consumption of the device (power consumption can with as little as 0.00001 watt/
Hour).First interface 111 is IO (input output, input and output) mouth of the multiplexing of MCU controllers 110, in standby mode
Under, first interface 111 is used for the voltage signal for obtaining outside input；In a detection mode, first interface 111 is used to outwards export
Pulse signal.The I/O port of second interface 112 and MCU controllers 110, for outwards exporting the arteries and veins exported with first interface 111
Rush the opposite pulse signal of sense.Power supply 150 can be the dc source changed through civil power, or battery, battery
Including dry cell and battery, power supply 150 is preferably lithium coin cells.
The principle that above-mentioned TDS detection means meets water automatic start detection pattern is as follows：When water quality probe 120 does not meet water,
Water quality probe 120 exposes in atmosphere, and air can not form current loop equivalent to insulator, the so device, and first connects
Mouth 111 gets the voltage signal at the high level end of power supply 150；When water quality probe 120 is inserted in tested water body, because water is to lead
Electricity, tested water body is equivalent to the conductor of certain resistance, power supply 150, triggering resistance 140 and water quality probe so in the device
120 just form current loop by tested water body, and triggering resistance 140 just generates certain pressure drop after forming current loop, the
One interface 111 gets voltage signal and can reduced；MCU controllers 110 are got by the voltage of high step-down by first interface 111
After signal, it is determined that receiving trigger signal, and start the detection pattern of TDS detection means.So, water is met in water quality probe 120
Automatic start detection pattern afterwards, when not meeting water will not automatic start detection pattern, TDS detection means can be avoided to be constantly in height
The detection pattern of power consumption, so as to reduce power consumption, the usage time of battery is improved, extends the life-span of the device.
Further, above-mentioned TDS detection means also includes the timer being connected with MCU controllers 110.MCU controllers 110
It can start the timer while detection pattern is started.Timer can be sent when reaching preset time to MCU controllers 110
Interrupt signal, wherein, the preset time of timer can be set according to the actual requirements, not limited here.MCU controllers 110
Above-mentioned detection pattern is closed when receiving the interrupt signal of timer transmission, and starts the standby mould of above-mentioned TDS detection means
Formula.So, the TDS detection means can be closed the detection pattern of high power consumption with self-timing, started low after detection pattern is started
The standby mode of power consumption, the detection pattern that TDS detection means is constantly in high power consumption is further avoid, reduce electric energy and disappear
Consumption, extend the life-span of the device.
The Cleaning Principle of above-mentioned TDS detection means is as follows：Under above-mentioned detection pattern, the control of MCU controllers 110 first connects
111 output pulse signals of mouth (such as 200HZ pulse frequency), the pulse signal is pulse voltage signal, while controls second
Interface 112 exports the pulse signal of opposite direction.When the current potential of second interface 112 is height, and the current potential of first interface 111 is low, electric current
Flow to first interface 111 from second interface 112, now by sampling resistor 130 by second electrode 122 relative to first electrode
121 voltage sample into AD (Analog to Digital, analog-converted numeral) Sampling Interface 113 of MCU controllers 110,
The voltage data of collection is converted to digital quantity, and the pass corresponding with TDS values of the voltage data by prestoring by MCU controllers 110
System, the digital quantity is converted into the output of TDS values；When the current potential of second interface 112 is low, the current potential of first interface 111 for it is high when, the dress
Put and detected without TDS, and eliminate the polarization phenomena work of water quality probe 120.Wherein, when electric current is from second interface 112
When flowing to first interface 111, for electric current by tested water body, the tested water body can be equivalent to certain resistance value, the voltage of collection
Data and the resistance value into certain proportionate relationship, the resistance value again with the electrical conductivity of tested water body into certain proportionate relationship,
The electrical conductivity of tested water body is again proportional with TDS values, therefore, can be converted to obtain tested water according to the voltage data of collection
The TDS values of body, and the voltage data stored in different TDS detection means and the corresponding relation of TDS values are by measuring and calculating in advance
Obtained after correction.Because first interface 111 and second interface 112 are with the pattern output voltage of height pulse, therefore
Be not in polarization phenomena between one electrode 121 and second electrode 122, substantially increase the service life of water quality probe 120
And reduce influence to measurement accuracy and tested water body water quality after water quality probe 120 polarizes.
To sum up, in the embodiment of the present invention, the automatic start detection pattern after water quality probe meets water, after detection pattern is started
Self-timing closes the detection pattern of high power consumption, starts the standby mode of low-power consumption, TDS detection means can be avoided to be constantly in
The detection pattern of high power consumption, so as to reduce power consumption, the usage time of battery is improved, extends the life-span of the device；Examined in TDS
During survey, the reverse pulse signal of outbound course is distinguished by first interface and second interface, alleviates polarization phenomena, so as to
Measurement accuracy is improved, reduces the influence to tested water body water quality.
In order to reduce influence of the clutter to testing result, above-mentioned TDS detection means also includes filter circuit, second electrode
122 are connected by filter circuit with the low level end of power supply 150.Here specific filter circuit is not construed as limiting, can basis
It is actually needed from suitable filter circuit.
Fig. 2 is the circuit theory diagrams of TDS detection means provided in an embodiment of the present invention, as shown in Fig. 2 the device uses 3V
Dc source power supply, R12_1 for triggering resistance 140 (resistance can elect 10M Ω as), TDS IO1 are first interface 111, TDS
IO2 is second interface 112, and R12 is current-limiting resistance, and electrode A is first electrode 121, and electrode B is second electrode 122, R14 and C10
(electric capacity 1nf), R15 constitute filter circuit, and R13 is sampling resistor 130 (200 expression resistances can elect 20 Ω as), and AN1 is
Sampling Interface 113, R15 are divider resistance.
In a specific embodiment, using the circuit theory diagrams shown in Fig. 2, R12 resistance takes 100 Ω, R14 resistance
When value takes 1000 Ω, the voltage data (sample voltage value) and the corresponding relation of TDS values gathered by Sampling Interface 113 is as follows：
As 3V ＞ sample voltage values >=2.56V, TDS values=2319.42144- sample voltage value/3 × 4096 ×
0.21121；
As 2.56V ＞ sample voltage values >=2.34V, TDS values=2319.42144- sample voltage value/3 × 4096 ×
0.36313；
As 2.34V ＞ sample voltage values >=2.19V, TDS values=2319.42144- sample voltage value/3 × 4096 ×
0.566265；
As 2.19V ＞ sample voltage value ＞ 0V, TDS values=2319.42144- sample voltage value/3 × 4096 ×
0.478261。
In order to further improve the eradicating efficacy of polarization phenomena, MCU controllers 110 include two pulse width modulation (PWM)s
(Pulse Width Modulation, pulse width modulation) module, two PWM modules respectively with first interface 111 and second
Interface 112 connects one to one；Two PWM modules are used for the pulse letter for producing the opposite frequency cycle change of both direction
Number, the size of output voltage can also be controlled respectively.Due to using identical frequency pulse signal when still there may be certain
Polarization phenomena, the present embodiment is by the variable alternating signal of output frequency, and elimination polarization phenomena that can be to a greater extent carry
High eradicating efficacy.
When power supply 150 is battery, in order to prevent battery over-discharge from causing the damage of battery, and charging is provided
The function of detection pattern is activated, above-mentioned TDS detection means also includes power supply monitoring module.Power supply monitoring module respectively with power supply
150 and MCU controllers 110 connect, and for providing over for power supply 150, and are charged when monitoring that power supply 150 is in
During state, charging signals are sent to MCU controllers 110；MCU controllers 110 are additionally operable to after receiving charging signals, start TDS
The detection pattern of detection means.User can choose whether to enable charging activation function, in the case where the function enables state, for because
Deep-discharge protection closes the situation of detection pattern, when power supply 150 charges, you can automatic start detection pattern, be user
Provide the individual demand for conveniently, further meeting user.
It is that power supply 150 charges in order to facilitate user, above-mentioned TDS detection means also includes the USB being connected with power supply 150
(Universal Serial Bus, USB) charging module, USB charging modules are used to fill for the offer of power supply 150 USB
Electrically.
Testing result is checked in order to facilitate user, above-mentioned TDS detection means also includes display screen；Display screen respectively with power supply
150 and MCU controllers 110 connect, for showing the TDS values of detection.
In view of said apparatus is not in the case of being activated (under holding state), it is still necessary to carries out timework, above-mentioned TDS
Detection means also includes the timing module of external connection；Timing module is connected with power supply 150 and MCU controllers 110 respectively, is used for
Calculate the usage time of TDS detection means.Timing module can make the device realize clocking capability.
Further, above-mentioned TDS detection means also includes function button；Function button controls with power supply 150 and MCU respectively
Device 110 connects, for providing power on/off function, inquiry into service time function and function of reset.The function button can be one,
Can also be multiple.In one embodiment, the function button is one, and short time pressing (short-press) function button can be realized
Power up function, shut-off function can be realized by pressing (long-press) function button for a long time, and short-press+long-press function button can realize weight
Function is put, the short-press function button can realize inquiry into service time function after start, wherein, the time of short-press/long-press here
Scope is what is be previously set.
Fig. 3 is second of structural representation of TDS detection means provided in an embodiment of the present invention, as shown in figure 3, the TDS
In detection means, circuit module 301 is detected using the TDS being made up of water quality probe 120, sampling resistor 130, triggering resistance 140,
Lithium coin cells 302, DW01+8205A lithium pyroelectric monitors module 303, BQ2057C USB charging modules 304, SSD1306OLED
(Organic Light-Emitting Diode, Organic Light Emitting Diode) display module 305 and DS1302 timing modules
306。
Specifically, above-mentioned whole device uses outside button cell power supply mode, because whole device uses sealing structure,
So button cell just can not be dismantled, therefore DW01 and 8205A lithium pyroelectric monitor is used on battery powered loop once use
Module, effect are the damage for preventing that the over-discharge of button cell from causing battery, make the service life of whole device significantly
Increase.Secondly lithium battery is charged using external USB charging modes, facilitates user to charge.
Because whole device is powered by button cell, therefore special processing has been carried out in terms of power consumption, according to MCU's
Characteristic, using the working method of external activation, concrete mode is：When not meeting under water and uncharged state, whole device is in low
The standby mode of power consumption, in this mode, power consumption are 0.00001 watt/hour, drastically increase the usage time of battery；
When the device is met water, charging or function button and is pressed, device is activated (startup detection pattern), and electricity is detected by TDS
Road module 301 is detected, and is shown in real time on OLED screen curtain, and this phase duration is about 10 seconds, and (time is only
One example, is not limited this).By the working method of this activation, the usage time of device is not only increased, and
Extended the life-span of TDS detection means.A timing module based on DS1302, energy have been also connected with outside the device
Enough realize the function of timing.
Embodiment two：
Fig. 4 is the structural representation of purifying kettle provided in an embodiment of the present invention, as shown in figure 4, the purifying kettle includes kettle sheet
Body 42 and the TDS detection means 41 such as above-mentioned embodiment one；TDS detection means 41 is arranged in kettle body 42, TDS detection means
41 are preferably set using embedded mode.
In the embodiment of the present invention, the automatic start detection pattern after water quality probe meets water is automatic after detection pattern is started
The detection pattern of high power consumption is closed in timing, starts the standby mode of low-power consumption, TDS detection means can be avoided to be constantly in Gao Gong
The detection pattern of consumption, so as to reduce power consumption, the usage time of battery is improved, extends the life-span of the device；Detected in TDS
Cheng Zhong, the reverse pulse signal of outbound course is distinguished by first interface and second interface, polarization phenomena are alleviated, so as to improve
Measurement accuracy, reduces the influence to tested water body water quality.
It is apparent to those skilled in the art that for convenience and simplicity of description, the water purification of foregoing description
The specific work process of kettle, the corresponding process in foregoing TDS detection means embodiment is may be referred to, will not be repeated here.
Purifying kettle provided in an embodiment of the present invention, the TDS detection means provided with above-described embodiment have identical technology
Feature, so can also solve identical technical problem, reach identical technique effect.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
- A kind of 1. TDS detection means, it is characterised in that including：Micro-control unit MCU controllers and respectively with the MCU control Water quality probe, sampling resistor, triggering resistance and the power supply of device connection processed；The water quality probe includes first electrode and second electrode, the high level end of the power supply and one end of the triggering resistance Connection, the other end of the triggering resistance are connected with the first electrode, the second electrode and the low level end of the power supply Connection, to make the power supply, triggering resistance, the water quality probe and the institute when the water quality probe is inserted in tested water body State tested water body and form current loop；The connection end of the triggering resistance and the first electrode is connected with the first interface of the MCU controllers, the MCU controls Device processed be used for it is described when obtaining to form current loop by the first interface trigger trigger signal caused by resistance, described in startup The detection pattern of TDS detection means；The connection end of the second electrode and the power supply is connected with the second interface of the MCU controllers；The sampling resistor It is connected between the Sampling Interface of the second electrode and the MCU controllers；The MCU controllers are additionally operable in the detection Under pattern, the reverse pulse signal of outbound course is distinguished by the first interface and the second interface, and adopt by described Voltage data described in sample electrical resistance collection between first electrode and the second electrode, output are corresponding with the voltage data TDS values.
- 2. TDS detection means according to claim 1, it is characterised in that the TDS detection means also include with it is described The timer of MCU controllers connection；The MCU controllers are additionally operable to start the timer while detection pattern is started, described fixed when receiving When device send interrupt signal when close the detection pattern, and start the standby mode of the TDS detection means.
- 3. TDS detection means according to claim 1, it is characterised in that the TDS detection means also includes filtered electrical Road, the second electrode are connected by the filter circuit with the low level end of the power supply.
- 4. TDS detection means according to claim 1, it is characterised in that the MCU controllers include two pulse widths Modulation (PWM) module, two PWM modules connect one to one with the first interface and the second interface respectively；Two The PWM module is used for the pulse signal for producing the opposite frequency cycle change of both direction.
- 5. TDS detection means according to claim 1, it is characterised in that the TDS detection means also includes power supply monitoring Module；The power supply monitoring module is connected with the power supply and the MCU controllers respectively, is put for being provided for the power supply Electric protection, and when monitoring that the power supply is in charged state, charging signals are sent to the MCU controllers；The MCU Controller is additionally operable to after receiving the charging signals, starts the detection pattern of the TDS detection means.
- 6. TDS detection means according to claim 1, it is characterised in that the TDS detection means also includes and the electricity The USB charging modules of source connection, the USB charging modules are used to provide USB charging modes for the power supply.
- 7. TDS detection means according to claim 1, it is characterised in that the TDS detection means also includes display screen； The display screen is connected with the power supply and the MCU controllers respectively, for showing the TDS values.
- 8. TDS detection means according to claim 7, it is characterised in that the TDS detection means also includes timing mould Block；The timing module is connected with the power supply and the MCU controllers respectively, for calculating making for the TDS detection means Use the time.
- 9. TDS detection means according to claim 8, it is characterised in that the TDS detection means is also pressed including function Button；The function button is connected with the power supply and the MCU controllers respectively, for providing power on/off function, usage time Query function and function of reset.
- A kind of 10. purifying kettle, it is characterised in that the TDS inspections including kettle body and as any one of above-mentioned claim 1-9 Survey device；The TDS detection means is arranged in the kettle body.
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