CN110183049A - A kind of filter device - Google Patents

A kind of filter device Download PDF

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Publication number
CN110183049A
CN110183049A CN201910510300.7A CN201910510300A CN110183049A CN 110183049 A CN110183049 A CN 110183049A CN 201910510300 A CN201910510300 A CN 201910510300A CN 110183049 A CN110183049 A CN 110183049A
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resistance
water
signal
detection sensor
unit
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李阳
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Suzhou Pulitzer Electronic Technology Co Ltd
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Suzhou Pulitzer Electronic Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/008Control or steering systems not provided for elsewhere in subclass C02F
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18Water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/06Controlling or monitoring parameters in water treatment pH

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The present invention provides a kind of filter device, utilize the first PH detection sensor, 2nd PH detection sensor, signal processing circuit, first conductivity detection sensor, second conductivity detection sensor, central processing unit, display unit, wireless transmission unit, power supply unit, mobile terminal unit, data storage cell, water inlet, water outlet, first water space, filter device and the second water space are filtered water and detect to filtered water, wherein, the water before filtering is detected by the first PH detection sensor and the first conductivity detection sensor, the 2nd PH detection sensor and the second conductivity detection sensor is recycled to detect filtered water, so that user knows filter effect, and the PH signal that two PH detection sensors detect is carried out using signal processing circuit Signal processing obtains accurate PH information with this.

Description

A kind of filter device
Technical field
The present invention relates to smart machine field more particularly to a kind of filter devices.
Background technique
The whole world has 60% or more land fresh water insufficient, has more than 40 country's serious water shortage, has 1/3 people cannot get in the world Safe water.There is 2,600,000,000,000 m of surface water capacity every year on average in China3, Chinese people possesses water about 2700m' every year, is in the world 88th.There are a urban water shortage more than 300, average daily 16,000,000 m of water deficit in a city in China more than current 6003, it is annual to influence the output value 20000000000 or more.But this extremely limited water resource is just increasingly subject to pollute, Ecology balance is just seriously destroyed, largely Untreated waste water is just emitted into waters, there is 30,000,000,000 m every year3Waste water makes in national 532 trunk rivers 82% by difference The pollution of degree.
In today of water resource growing tension, people also increasingly increase the quality requirements of water, in the prior art, usually only It is only that processing simply is filtered to water, user cannot be made to know the quality of water, that is to say, that user can not accurately be known Filter effect.
Summary of the invention
Therefore, in order to overcome the above problem, the present invention provides a kind of filter device, utilizes the first PH detection sensor, Two PH detection sensors, signal processing circuit, the first conductivity detection sensor, the second conductivity detection sensor, centre Manage device, display unit, wireless transmission unit, power supply unit, mobile terminal unit, data storage cell, water inlet, water outlet Mouth, the first water space, filter device and the second water space are filtered water and detect to filtered water, Wherein, the water before filtering is detected by the first PH detection sensor and the first conductivity detection sensor, recycles the Two PH detection sensors and the second conductivity detection sensor detect filtered water, so that user knows filtering effect Fruit, and signal processing is carried out to the PH signal that two PH detection sensors detect using signal processing circuit, it is obtained accurately with this PH information.
Filter device provided by the invention includes the first PH detection sensor, the 2nd PH detection sensor, signal processing electricity Road, the first conductivity detection sensor, the second conductivity detection sensor, central processing unit, display unit, wireless transmission are single Member, power supply unit, mobile terminal unit, data storage cell, water inlet, water outlet, the first water space, filter device and Second water space.
Wherein, the first PH detection sensor and the first conductivity detection sensor are all set in the first water storage of filter device In space, the 2nd PH detection sensor and the second conductivity detection sensor are all set in the second water space of filter device Interior, water to be filtered enters from the inlet the first water space, and water is entered second by the first water space after filter device In water space, the water by filtering is released from water outlet.
The output end of first PH detection sensor and the output end of the 2nd PH detection sensor with signal processing circuit Input terminal connection, the output end of signal processing circuit and the input terminal of central processing unit connect, the first conductivity detection sensing The output end of device and the output end of the second conductivity detection sensor are connect with the input terminal of central processing unit, central processing The input terminal of device and the output end of central processing unit connect, and central processing unit passes through wireless transmission unit and mobile terminal Unit connection, central processing unit are connect by wireless transmission unit with data storage cell, and power supply unit mentions for filter device For electric power support.
Preferably, filter device includes that PH adjusts unit and biofiltration unit, wherein the water entered from the inlet is deposited It is stored in the first water space, then successively enters in the second water space after PH adjusts unit and biofiltration unit.
Preferably, the first PH detection sensor is used to acquire the PH signal of the water in the first water space, the 2nd PH inspection Survey the PH signal that sensor is used to acquire the water in the second water space, the first PH detection sensor and the 2nd PH detection sensor Collected PH signal is transmitted to signal processing circuit, signal processing circuit successively carries out signal to the PH signal received Amplification and signal filtering processing.
Preferably, the first PH detection sensor is used to acquire the PH signal of the water in the first water space, the 2nd PH inspection The PH signal that sensor is used to acquire the water in the second water space is surveyed, the PH signal of acquisition is converted into voltage signal V0, and Voltage signal V0 is transmitted to signal processing circuit, V1 is by signal processing circuit treated voltage signal, signal processing Circuit includes signal amplification unit and signal filter unit, the output end of two PH detection sensors with signal amplification unit Input terminal connection, the output end of signal amplification unit are connect with the input terminal of signal filter unit, the output of signal filter unit End is connect with the input terminal of central processing unit.
Preferably, signal amplification unit includes integrated transporting discharging A1-A2, capacitor C1-C2 and resistance R1-R10.
Wherein, the output end of two PH detection sensors is connect with one end of resistance R1, the other end and collection of resistance R1 It is connected at the non-inverting input terminal of amplifier A1, one end ground connection of resistance R2, the reverse phase of the other end and integrated transporting discharging A1 of resistance R2 is defeated Enter end connection, one end ground connection of resistance R3, the other end of resistance R3 is connect with the non-inverting input terminal of integrated transporting discharging A1, resistance R4's One end ground connection, the other end of resistance R4 are connect with the inverting input terminal of integrated transporting discharging A1, the port V- of integrated transporting discharging A1 and -15V Power supply connection, one end ground connection of capacitor C2, the other end of capacitor C2 are connect with the end V- of integrated transporting discharging A1, the V+ of integrated transporting discharging A1 End is connect with+15V power supply, and one end of capacitor C1 is connect with the end V+ of integrated transporting discharging A1, the other end ground connection of capacitor C1, resistance R6 One end ground connection, the other end of resistance R6 connect with the output end of integrated transporting discharging A1, one end of resistance R5 and controllable current source One end connection, controllable current source other end ground connection, the I of integrated transporting discharging A1SETEnd is connect with the other end of resistance R5, integrated transporting discharging The output end of A1 is also connect with the non-inverting input terminal of integrated transporting discharging A2, one end ground connection of resistance R7, the other end and collection of resistance R7 It is connected at the inverting input terminal of amplifier A2, one end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, resistance R8's The other end is connect with the output end of integrated transporting discharging A2, and one end of resistance R9 is connect with the output end of integrated transporting discharging A2, resistance R10's One end ground connection, the other end of resistance R10 connect with the other end of resistance R9, the other end of resistance R10 also with signal filter unit Connection.
Preferably, signal filter unit includes it is characterized in that, signal filter unit includes resistance R11-R13, capacitor C3-C4 and integrated transporting discharging A3.
Wherein, the output end of signal amplification unit is connect with one end of resistance R11, the other end and resistance R12 of resistance R11 One end connection, one end ground connection of capacitor C3, the other end of capacitor C3 connect with one end of resistance R12, the other end of resistance R12 It is connect with one end of capacitor C4, one end of resistance R13 is connect with one end of resistance R12, and the other end of resistance R13 is with capacitor C4's Other end connection, the other end of capacitor C4 connect with the output end of integrated transporting discharging A3, one end of capacitor C4 also with integrated transporting discharging A3 Inverting input terminal connection, integrated transporting discharging A3 non-inverting input terminal ground connection, the output end and central processing unit of integrated transporting discharging A3 Input terminal connection, voltage signal V1 is transmitted to central processing unit by signal filter unit.
Preferably, the first conductivity detection sensor detects the conductivity of the water in the first water space, the The PH that one PH detection sensor detects the pH value of the water in the first water space, and will test passes through signal processing electricity Road is transmitted to central processing unit, and default conductivity range value and default PH value range are stored in central processing unit, if in The conductivity that centre processing unit receives is in default conductivity range value, and the pH value that central processing unit receives is default In pH range value, then central processing unit control display unit shows the water in the first water space without filtering, if central The conductivity that processing unit receives is not in default conductivity range value or pH value that central processing unit receives is not pre- If in pH range value, then central processing unit control display unit shows that the water in the first water space needs to filter.
Preferably, the second conductivity detection sensor detects the conductivity of the water in the second water space, the The PH that two PH detection sensors detect the pH value of the water in the second water space, and will test passes through signal processing electricity Road is transmitted to central processing unit, and default conductivity range value and default PH value range are stored in central processing unit, if in The conductivity that centre processing unit receives is in default conductivity range value, and the pH value that central processing unit receives is default In pH range value, then central processing unit control display unit shows the qualification of the water quality in the second water space, if centre The conductivity that receives of reason device is not in default conductivity range value or pH value that central processing unit receives is not default In pH range value, then central processing unit control display unit shows that the water quality in the second water space is unqualified.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) present invention provides a kind of filter device, utilizes the first PH detection sensor, the 2nd PH detection sensor, signal processing Circuit, the first conductivity detection sensor, the second conductivity detection sensor, central processing unit, display unit, wireless transmission Unit, power supply unit, mobile terminal unit, data storage cell, water inlet, water outlet, the first water space, filter device with And second water space water is filtered and filtered water is detected, wherein pass through the first PH detection sensor The water before filtering is detected with the first conductivity detection sensor, recycles the 2nd PH detection sensor and the second conductivity Detection sensor detects filtered water, so that user knows filter effect, and using signal processing circuit to two The PH signal of PH detection sensor detection carries out signal processing, obtains accurate PH information with this.
(2) a kind of filter device provided by the invention, inventive point of the invention are also resided in due to two PH detection sensors The signal of acquisition is faint voltage signal, thus signal amplification unit passes through integrated transporting discharging A1-A2, capacitor C1-C2 and resistance The voltage V0 that R1-R10 exports two PH detection sensors amplifies processing, by integrated transporting discharging A1-A2, capacitor C1-C2 and The signal amplification unit that resistance R1-R10 is constituted only have offset within the drift of 1.15 μ V/ DEG C, 2 μ V, 100pA bias current and The noise of 0.85nV in the broadband 0.1Hz to 10Hz.Wherein, signal filter unit using resistance R11-R13, capacitor C3-C4 and Integrated transporting discharging A3 carries out low-pass filtering treatment to by amplified voltage signal, to improve the precision of PH detection.
Detailed description of the invention
Fig. 1 is the main view of filter device of the invention;
Fig. 2 is the perspective view of filter device of the invention;
Fig. 3 is the right view of filter device of the invention;
Fig. 4 is the functional diagram of filter device of the invention;
Fig. 5 is the functional diagram of filter device water process of the invention;
Fig. 6 is the circuit diagram of signal processing circuit of the invention.
Appended drawing reference:
1- water inlet;2- water outlet;The first water space of 3-;4- filter device;The second water space of 5-.
Specific embodiment
Filter device provided by the invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figs. 1-5, filter device provided by the invention includes the first PH detection sensor, the 2nd PH detection sensing Device, signal processing circuit, the first conductivity detection sensor, the second conductivity detection sensor, central processing unit, display are single Member, wireless transmission unit, power supply unit, mobile terminal unit, data storage cell, water inlet 1, water outlet 2, the first water storage are empty Between 3, filter device 4 and the second water space 5.
In above embodiment, the first PH detection sensor and the first conductivity detection sensor are set to the first water storage sky Between in 3, the 2nd PH detection sensor and the second conductivity detection sensor are set in the second water space 5, signal processing electricity Road, central processing unit, wireless transmission unit and power supply unit are all set in the bottom position of filter device.
Wherein, the first PH detection sensor and the first conductivity detection sensor are all set in the first water storage of filter device In space 3, the 2nd PH detection sensor and the second conductivity detection sensor are all set in the second water space 5 of filter device Interior, water to be filtered enters the first water space 3 from water inlet 1, and the first water space 3 enters water after filter device 4 In second water space 5, the water by filtering is released from water outlet 2.
The output end of first PH detection sensor and the output end of the 2nd PH detection sensor with signal processing circuit Input terminal connection, the output end of signal processing circuit and the input terminal of central processing unit connect, the first conductivity detection sensing The output end of device and the output end of the second conductivity detection sensor are connect with the input terminal of central processing unit, central processing The input terminal of device and the output end of central processing unit connect, and central processing unit passes through wireless transmission unit and mobile terminal Unit connection, central processing unit are connect by wireless transmission unit with data storage cell, and power supply unit mentions for filter device For electric power support.
In above embodiment, the first PH detection sensor, the 2nd PH detection sensor, signal processing circuit, are utilized One conductivity detection sensor, the second conductivity detection sensor, central processing unit, display unit, wireless transmission unit, confession Electric unit, mobile terminal unit, data storage cell, water inlet, water outlet, the first water space, filter device and second Water space is filtered water and detects to filtered water, wherein passes through the first PH detection sensor and first Conductivity detection sensor detects the water before filtering, and the 2nd PH detection sensor and the detection of the second conductivity is recycled to pass Sensor detects filtered water, so that user knows filter effect, and is detected using signal processing circuit to two PH The PH signal of sensor detection carries out signal processing, obtains accurate PH information with this.
Display unit is set to (not shown) on filter jug, and the first PH detection sensor and the detection of the first conductivity pass Sensor detects the water before filtering, and the data that will test are shown on display unit, the 2nd PH detection sensor and The data that second conductivity detection sensor detects filtered water, and will test are also shown on the display unit, User can know water PH signal before filtration, conductivity and filtered PH signal, conductivity by display unit.
Water PH signal, conductivity and filtered PH signal before filtration, conductivity pass through wireless transmission unit and transmit To mobile terminal unit and data storage cell.
User can also know PH signal, conductivity and the filtered PH letter of water before filtration in mobile terminal unit Number, conductivity, additionally it is possible to by obtaining all previous water PH signal before filtration, conductivity and filtered in data transmission unit PH signal, conductivity.
Specifically, filter device 4 includes that PH adjusts unit and biofiltration unit, wherein the water entered from water inlet 1 is deposited It is stored in the first water space 3, then successively enters in the second water space 5 after PH adjusts unit and biofiltration unit.
Specifically, in above-mentioned biofiltration unit, biological filtering membrane with a thickness of Lf, then have,
Wherein, SminFor the minimum concentration of biology, Ks is constant, unit mg/cm3, b is than coefficient of internal friction, unit h-1, bD For the shearing loss factor that water flow generates biomembrane, unit is h-1, Y is true performance factor, and k is the utilization of high specific matrix Rate.
Wherein, J is the diffusion flux of matrix, and unit is mg/ (cm2H), S is concentration of the matrix in film, unit mg/ cm3, D is matrix diffusion coefficient in film, unit cm2/ h, Sb are matrix body concentration, unit mg/cm3, Ss is matrix on boundary Concentration in face and film, unit mg/cm3, L is the thickness of diffusion barrier, unit cm.
Wherein, Xf is bacterial concentration in film.
It can finally obtain:
Specifically, the first PH detection sensor is used to acquire the PH signal of the water in the first water space 3, the 2nd PH detection Sensor is used to acquire the PH signal of the water in the second water space 5, the first PH detection sensor and the 2nd PH detection sensor Collected PH signal is transmitted to signal processing circuit, signal processing circuit successively carries out signal to the PH signal received Amplification and signal filtering processing.
As shown in fig. 6, the first PH detection sensor is used to acquire the PH signal of the water in the first water space 3, the 2nd PH Detection sensor is used to acquire the PH signal of the water in the second water space 5, and the PH signal of acquisition is converted to voltage signal V0, And voltage signal V0 is transmitted to signal processing circuit, V1 is by signal processing circuit treated voltage signal, at signal Reason circuit includes signal amplification unit and signal filter unit, and the output end of two PH detection sensors is and signal amplification unit Input terminal connection, the output end of signal amplification unit connect with the input terminal of signal filter unit, signal filter unit it is defeated The connection of the input terminal of outlet and central processing unit.
Specifically, signal amplification unit includes integrated transporting discharging A1-A2, capacitor C1-C2 and resistance R1-R10.
Wherein, the output end of two PH detection sensors is connect with one end of resistance R1, the other end and collection of resistance R1 It is connected at the non-inverting input terminal of amplifier A1, one end ground connection of resistance R2, the reverse phase of the other end and integrated transporting discharging A1 of resistance R2 is defeated Enter end connection, one end ground connection of resistance R3, the other end of resistance R3 is connect with the non-inverting input terminal of integrated transporting discharging A1, resistance R4's One end ground connection, the other end of resistance R4 are connect with the inverting input terminal of integrated transporting discharging A1, the port V- of integrated transporting discharging A1 and -15V Power supply connection, one end ground connection of capacitor C2, the other end of capacitor C2 are connect with the end V- of integrated transporting discharging A1, the V+ of integrated transporting discharging A1 End is connect with+15V power supply, and one end of capacitor C1 is connect with the end V+ of integrated transporting discharging A1, the other end ground connection of capacitor C1, resistance R6 One end ground connection, the other end of resistance R6 connect with the output end of integrated transporting discharging A1, one end of resistance R5 and controllable current source One end connection, controllable current source other end ground connection, the I of integrated transporting discharging A1SETEnd is connect with the other end of resistance R5, integrated transporting discharging The output end of A1 is also connect with the non-inverting input terminal of integrated transporting discharging A2, one end ground connection of resistance R7, the other end and collection of resistance R7 It is connected at the inverting input terminal of amplifier A2, one end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, resistance R8's The other end is connect with the output end of integrated transporting discharging A2, and one end of resistance R9 is connect with the output end of integrated transporting discharging A2, resistance R10's One end ground connection, the other end of resistance R10 connect with the other end of resistance R9, the other end of resistance R10 also with signal filter unit Connection.
Specifically, signal filter unit includes it is characterized in that, signal filter unit includes resistance R11-R13, capacitor C3- C4 and integrated transporting discharging A3.
Wherein, the output end of signal amplification unit is connect with one end of resistance R11, the other end and resistance R12 of resistance R11 One end connection, one end ground connection of capacitor C3, the other end of capacitor C3 connect with one end of resistance R12, the other end of resistance R12 It is connect with one end of capacitor C4, one end of resistance R13 is connect with one end of resistance R12, and the other end of resistance R13 is with capacitor C4's Other end connection, the other end of capacitor C4 connect with the output end of integrated transporting discharging A3, one end of capacitor C4 also with integrated transporting discharging A3 Inverting input terminal connection, integrated transporting discharging A3 non-inverting input terminal ground connection, the output end and central processing unit of integrated transporting discharging A3 Input terminal connection, voltage signal V1 is transmitted to central processing unit by signal filter unit.
In above embodiment, the noise of signal processing circuit drifts about within 0.85nV as 1.15 μ V/ DEG C, integrated fortune The model for putting A1 is LT1228, the model LT1210 of the model LT1192 of integrated transporting discharging A2, integrated transporting discharging A3.
In signal amplification unit, the resistance value of resistance R1 is 10.7k Ω, and the resistance value of resistance R2 is 10.7k Ω, resistance R3's Resistance value is 274 Ω, and the resistance value of resistance R4 is 274 Ω, and the resistance value of resistance R5 is 2k Ω, and the resistance value of resistance R6 is 806 Ω, resistance R7 Resistance value be 82.5 Ω, the resistance value of resistance R8 is 750 Ω, and the resistance value of resistance R9 is 75 Ω, and the resistance value of resistance R10 is 75 Ω, electricity The capacitance for holding C1 is 4.7 μ F, and the capacitance of capacitor C2 is 4.7 μ F.
In signal amplification unit, resistance R6 determines the bandwidth of signal amplification unit, in order to obtain optimal bandwidth, This select resistance R6 resistance value be 806 Ω, the gain of signal amplification unit be affected by temperature it is smaller, during actual test, What is measured is influenced by temperature lower than ± 3%.
In signal amplification unit provided by the invention, other than current setting resistance, controllable current source is a voltage-controlled electricity Stream source, resistance R6 be used for adjustment signal amplifying unit gain, the resistance value of resistance R6 be it is adjustable, can effectively reduce integrated The gain tolerance of amplifier A1.
Further, it is 0.5- that signal amplification unit provided by the invention, which receives the input reference signal of sensor, 3.0V, frequency range 0-5MHz.
The output voltage signal of signal amplification unit is V01.
In signal filter unit, the resistance value of resistance R11-R13, the capacitance of capacitor C3-C4 be according to filtering demands into Row setting.
The output signal of signal filter unit is V1.
It then analyzes, frequency filtering is, filtered quality parameters Q.
As the above analysis, in signal filter unit, frequency filtering is adjusted by adjusting R13With adjusting R1 ` adjusts filter quality Q.
Since the signal of two PH detection sensors acquisition is faint voltage signal, thus signal amplification unit passes through collection Processing is amplified at the voltage V0 that amplifier A1-A2, capacitor C1-C2 and resistance R1-R10 export two PH detection sensors, There was only drift, 2 μ of 1.15 μ V/ DEG C by the signal amplification unit that integrated transporting discharging A1-A2, capacitor C1-C2 and resistance R1-R10 are constituted The noise of 0.85nV in offset, 100pA bias current and the broadband 0.1Hz to 10Hz within V.Wherein, signal filter unit makes Low-pass filtering treatment is carried out to by amplified voltage signal with resistance R11-R13, capacitor C3-C4 and integrated transporting discharging A3, To improve the precision of PH detection.
Specifically, central processing unit is STM32 single-chip microcontroller.
Specifically, display unit is LCD display device.
Specifically, mobile terminal unit is user mobile phone.
Specifically, the first conductivity detection sensor detects the conductivity of the water in the first water space 3, and first PH detection sensor passes through signal processing electricity to the PH that the pH value of the water in the first water space 3 is detected, and be will test Road is transmitted to central processing unit, and default conductivity range value and default PH value range are stored in central processing unit, if in The conductivity that centre processing unit receives is in default conductivity range value, and the pH value that central processing unit receives is default In pH range value, then central processing unit control display unit shows the water in the first water space 3 without filtering, if central The conductivity that processing unit receives is not in default conductivity range value or pH value that central processing unit receives is not pre- If in pH range value, then central processing unit control display unit shows that the water in the first water space 3 needs to filter.
Specifically, the second conductivity detection sensor detects the conductivity of the water in the second water space 5, and second PH detection sensor passes through signal processing electricity to the PH that the pH value of the water in the second water space 5 is detected, and be will test Road is transmitted to central processing unit, and default conductivity range value and default PH value range are stored in central processing unit, if in The conductivity that centre processing unit receives is in default conductivity range value, and the pH value that central processing unit receives is default In pH range value, then central processing unit control display unit shows the qualification of the water quality in the second water space 5, if centre The conductivity that receives of reason device is not in default conductivity range value or pH value that central processing unit receives is not default In pH range value, then central processing unit control display unit shows that the water quality in the second water space 5 is unqualified.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention Scope of the claims in.

Claims (6)

1. a kind of filter device, which is characterized in that the filter device includes the first PH detection sensor, the 2nd PH detection sensing Device, signal processing circuit, the first conductivity detection sensor, the second conductivity detection sensor, central processing unit, display are single Member, wireless transmission unit, power supply unit, mobile terminal unit, data storage cell, water inlet (1), water outlet (2), the first storage Hydrospace (3), filter device (4) and the second water space (5);
Wherein, the first PH detection sensor and the first conductivity detection sensor are all set in the filter device In first water space (3), the 2nd PH detection sensor and the second conductivity detection sensor are all set in In second water space (5) of the filter device, water to be filtered enters first water storage from the water inlet (1) Water is entered second water space (5) by space (3), first water space (3) after the filter device (4) Interior, the water by filtering is released from the water outlet (2);
The output end of the first PH detection sensor and the output end of the 2nd PH detection sensor are and at the signal The input terminal connection of circuit is managed, the output end of the signal processing circuit is connect with the input terminal of the central processing unit, institute The output end of the output end and the second conductivity detection sensor of stating the first conductivity detection sensor with the center The input terminal of processing unit connects, and the input terminal of the central processing unit is connect with the output end of the central processing unit, The central processing unit is connect by the wireless transmission unit with the mobile terminal unit, and the central processing unit is logical It crosses the wireless transmission unit to connect with the data storage cell, said supply unit provides electric power branch for the filter device It holds;
The first conductivity detection sensor detects the conductivity of the water in first water space (3), described First PH detection sensor detects the pH value of the water in first water space (3), and the PH that will test passes through The signal processing circuit is transmitted to the central processing unit, and default conductivity range is stored in the central processing unit Value and default PH value range, it is and described if the conductivity that the central processing unit receives is in default conductivity range value The pH value that central processing unit receives is in default pH range value, then the central processing unit controls the display unit The water in first water space (3) is shown without filtering, if the conductivity that the central processing unit receives is not pre- If in conductivity range value or pH value that the central processing unit receives is not in default pH range value, then it is described in Centre processing unit controls the display unit and shows that the water in first water space (3) needs to filter;
The second conductivity detection sensor detects the conductivity of the water in second water space (5), described 2nd PH detection sensor detects the pH value of the water in second water space (5), and the PH that will test passes through The signal processing circuit is transmitted to the central processing unit, and default conductivity range is stored in the central processing unit Value and default PH value range, it is and described if the conductivity that the central processing unit receives is in default conductivity range value The pH value that central processing unit receives is in default pH range value, then the central processing unit controls the display unit Show that the water quality in second water space (5) is qualified, if the conductivity that the central processing unit receives is not default In conductivity range value or pH value that the central processing unit receives is not in default pH range value, then the center Processing unit controls the display unit and shows that the water quality in second water space (5) is unqualified.
2. filter device according to claim 1, which is characterized in that the filter device (4) include PH adjust unit and Biofiltration unit, wherein the water entered from the water inlet (1) is stored in first water space (3), then is successively passed through It crosses after the PH adjusts unit and the biofiltration unit and enters in second water space (5).
3. filter device according to claim 1, which is characterized in that the first PH detection sensor is for acquiring in institute The PH signal of the first water space (3) interior water is stated, the 2nd PH detection sensor is for acquiring in second water space (5) the PH signal of interior water, the first PH detection sensor and the 2nd PH detection sensor are by collected PH signal It is transmitted to the signal processing circuit, the signal processing circuit successively carries out signal amplification and signal to the PH signal received Filtering processing.
4. filter device according to claim 1, which is characterized in that the first PH detection sensor is for acquiring in institute The PH signal of the first water space (3) interior water is stated, the 2nd PH detection sensor is for acquiring in second water space (5) the PH signal of acquisition is converted to voltage signal V0, and voltage signal V0 is transmitted at the signal by the PH signal of interior water Circuit is managed, V1 is by the signal processing circuit treated voltage signal, and the signal processing circuit includes signal amplification Unit and signal filter unit, the output end of two PH detection sensors are connect with the input terminal of the signal amplification unit, The output end of the signal amplification unit is connect with the input terminal of the signal filter unit, the output of the signal filter unit End is connect with the input terminal of the central processing unit.
5. filter device according to claim 4, which is characterized in that the signal amplification unit includes integrated transporting discharging A1- A2, capacitor C1-C2 and resistance R1-R10;
Wherein, the output end of two PH detection sensors is connect with one end of resistance R1, the other end of resistance R1 and integrated fortune Put the non-inverting input terminal connection of A1, one end ground connection of resistance R2, the other end of resistance R2 and the inverting input terminal of integrated transporting discharging A1 Connection, one end ground connection of resistance R3, the other end of resistance R3 are connect with the non-inverting input terminal of integrated transporting discharging A1, one end of resistance R4 Ground connection, the other end of resistance R4 are connect with the inverting input terminal of integrated transporting discharging A1, the port V- of integrated transporting discharging A1 and -15V power supply Connection, one end ground connection of capacitor C2, the other end of capacitor C2 connect with the end V- of integrated transporting discharging A1, the end V+ of integrated transporting discharging A1 and The connection of+15V power supply, one end of capacitor C1 are connect with the end V+ of integrated transporting discharging A1, the other end ground connection of capacitor C1, and the one of resistance R6 End ground connection, the other end of resistance R6 are connect with the output end of integrated transporting discharging A1, one end of resistance R5 and one end of controllable current source Connection, controllable current source other end ground connection, the I of integrated transporting discharging A1SETEnd is connect with the other end of resistance R5, integrated transporting discharging A1's Output end is also connect with the non-inverting input terminal of integrated transporting discharging A2, one end ground connection of resistance R7, the other end of resistance R7 and integrated fortune The inverting input terminal connection of A2 is put, one end of resistance R8 is also connect with the inverting input terminal of integrated transporting discharging A2, and resistance R8's is another End is connect with the output end of integrated transporting discharging A2, and one end of resistance R9 is connect with the output end of integrated transporting discharging A2, one end of resistance R10 Ground connection, the other end of resistance R10 connect with the other end of resistance R9, the other end of resistance R10 also with the signal filter unit Connection.
6. filter device according to claim 5, which is characterized in that the signal filter unit include it is characterized in that, The signal filter unit includes resistance R11-R13, capacitor C3-C4 and integrated transporting discharging A3;
Wherein, the output end of the signal amplification unit is connect with one end of resistance R11, the other end and resistance R12 of resistance R11 One end connection, one end ground connection of capacitor C3, the other end of capacitor C3 connect with one end of resistance R12, the other end of resistance R12 It is connect with one end of capacitor C4, one end of resistance R13 is connect with one end of resistance R12, and the other end of resistance R13 is with capacitor C4's Other end connection, the other end of capacitor C4 connect with the output end of integrated transporting discharging A3, one end of capacitor C4 also with integrated transporting discharging A3 Inverting input terminal connection, the non-inverting input terminal ground connection of integrated transporting discharging A3, the output end of integrated transporting discharging A3 and the central processing The input terminal of device connects, and voltage signal V1 is transmitted to the central processing unit by the signal filter unit.
CN201910510300.7A 2019-06-13 2019-06-13 A kind of filter device Pending CN110183049A (en)

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CN202522536U (en) * 2012-05-04 2012-11-07 珠海格力电器股份有限公司 Total dissolved solids (TDS) detection device of water purifier and water purifier
CN107098508A (en) * 2017-06-23 2017-08-29 青岛三利中德美水设备有限公司 Direct drinking sub-prime water work and its method of supplying water
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Application publication date: 20190830