CN108227785A - A kind of water management system based on relay zero-crossing detection - Google Patents
A kind of water management system based on relay zero-crossing detection Download PDFInfo
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- CN108227785A CN108227785A CN201810133943.XA CN201810133943A CN108227785A CN 108227785 A CN108227785 A CN 108227785A CN 201810133943 A CN201810133943 A CN 201810133943A CN 108227785 A CN108227785 A CN 108227785A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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Abstract
The invention discloses a kind of water management systems based on relay zero-crossing detection, include control chip and the reseting module, crystal oscillator module, burning module, switch power module, zero passage detection module, relay control module, motor control module, temperature detecting module and the flow detection module that are electrically connected with the control chip.The present invention controls relay in supply voltage zero crossing break-make power supply by zero passage detection module and relay control module, so as to solve the defects of water management system in the prior art leads to the rapid damage of relay contact oxidation when being unable to control relay in voltage over zero break-make power supply, the service life of relay is extended；And working time of the heating tube is adjusted in time using the information of temperature detecting module, flow detection module and motor control module, finally so that this water system achievees the purpose that the constant temperature water supply detected based on relay zero-crossing.
Description
Technical field
The present invention relates to water management system technical fields, are detected more specifically to one kind based on relay zero-crossing
Water management system.
Background technology
Water heater mainly controls the heating tube in water tank to heat water by control panel.In general, hot water
Device is all to control the break-make of relay to achieve the purpose that control heating tube work.In the prior art, when need disconnect relay
During device, control panel can disconnect the power supply of relay moment；When needing to connect relay, control panel meeting moment closing relay
Power supply.Since relay can generate electric arc in the time of on/off, electric arc can aoxidize the connecting terminal of relay, and electricity
The transient voltage of source break-make is bigger, and the electric arc of generation can be bigger, faster to the connecting terminal oxidation rate of relay, so that
Contact performance between connecting terminal is deteriorated, and eventually leading to relay can not be powered on by connecting terminal, and relay makes
It is shortened with the service life.Theoretically zero crossing voltage is 0V, and corresponding electric current is also 0A, and relay, which is opened or closed, in zero crossing touches
Point, it is possible to reduce electric arc, protection contact prevents high-temperature oxydation or melting, so as to improve the service life of relay contact.It is but existing
Water management system in technology is led because being unable to control relay when voltage is compared with low spot even voltage over zero break-make power supply
Cause the rapid damage of relay contact oxidation.
Invention content
In view of this, the present invention provides a kind of water management system based on relay zero-crossing detection, existing skill is solved
In art water management system cause because being unable to control relay when voltage is compared with low spot even voltage over zero break-make power supply after
The defects of appliance contact oxidation damages rapidly.
To achieve the above object, the present invention provides following technical solutions：
A kind of water management system based on relay zero-crossing detection includes control chip, reseting module, crystal oscillator module
And burning module；The control chip is electrically connected respectively with the reseting module, crystal oscillator module and burning module；Also wrap
Switch power module, zero passage detection module, relay, relay control module, heating tube, motor control module, motor have been included,
Temperature detecting module and flow detection module；Wherein, the input terminal of the switch power module is electrically connected with city, the switch
The DC low-voltage output terminal of power module and the power input of the control chip are electrically connected, the switch power module
The input terminal of DC high-voltage output end and the zero passage detection module is electrically connected, the effect of the switch power module be by
Alternating current is converted to DC low-voltage electricity and DC high-voltage；The control of the output terminal of the zero passage detection module and the control chip
End is electrically connected；High direct voltage exports after the effect of the zero passage detection module is the rectification for acquiring the switch power module
Terminal voltage information judges the high direct voltage zero of the switch power module；The relay control module includes relay
Device, the common end of the relay are connect with alternating current firewire, after the normally open end series connection alternating current zero curve of the relay control module
It is electrically connected with the heating tube, the signal control terminal of the relay control module and the output terminal electricity of the motor control module
Connection；The effect of the relay control module is to control the break-make of the power supply of the heating tube by relay；Institute
The control terminal and the control terminal of the control chip for stating motor control module are electrically connected, the output terminal of the motor control module
It is electrically connected with the input terminal of the motor；The motor control module is used to that the motor and the relay to be controlled to control mould
The break-make of the power supply of block；The control terminal of the temperature detecting module and the control terminal of the control chip are electrically connected, and are used
In detection water temperature；The control terminal of the flow detection module and the control terminal of the control chip are electrically connected, for detecting water
Flow velocity degree.
The reseting module provides reset operation for the control chip, and the crystal oscillator module is provided for the control chip
Working frequency, the burning module provide program entry operation for the control chip, and the switch power module is carried for system
For operating voltage；The control chip first controls the temperature detecting module and flow detection module to acquire water temperature and water flow velocity
Degree then according to systemic presupposition temperature, controls the zero passage detection module high to direct current after the rectification of the switch power module
Pressure output end voltage is detected, and is judged the high direct voltage zero of the switch power module, is then passed through the motor control
Molding block and relay control module adjust high direct voltage zero of the relay control module in the switch power module
Moment disconnects the working power of the heating tube by the relay, is supplied so as to reach the constant temperature detected based on relay zero-crossing
The purpose of water management.
As the preferred embodiment of the present invention, display control should have been further included based on the water management system that relay zero-crossing detects
Molding block, the control terminal of the display control module and the control chip is electrically connected, for controlling displays temperature.
As the preferred embodiment of the present invention, alarm control should have been further included based on the water management system that relay zero-crossing detects
Molding block, the control terminal of the alarm control module and the control chip are electrically connected, alarm for controlling.
As the present invention preferred embodiment, the zero passage detection module include resistance R10, R11, R30, R31, R32, R33,
R34, R35, capacitance C19, C20, C21, triode Q2, Q3 and opto-coupler chip PQ1；The A ends series electrical of the opto-coupler chip PQ1
It is electrically connected after resistance R30 with the DC high-voltage output end of the switch power module, the K ends of the opto-coupler chip PQ1 and power supply
Ground terminal is electrically connected, and C-terminal and the power supply 5V ends of the opto-coupler chip PQ1 are electrically connected, and the E ends of the opto-coupler chip PQ1 are successively
Series resistance R32 and R31 is electrically connected with power supply ground terminal；After the collector first branch series resistance R10 of the triode Q2
It is electrically connected with power supply 5V ends, with the triode Q3's after the collector the second branch series resistance R34 of the triode Q2
Collector is electrically connected, and is electrically connected after the collector third branch series capacitance C20 of the triode Q2 with power supply ground terminal；Institute
The base stage first branch for stating triode Q2 is sequentially connected in series after resistance R33 and capacitance C19 and is electrically connected with power supply ground terminal, three pole
The base stage the second branch of pipe Q2 is electrically connected after being sequentially connected in series resistance R33 and R31 with power supply ground terminal, the transmitting of the triode Q2
Pole is electrically connected with power supply ground terminal；It is electrical with power supply 5V ends after the collector first branch series resistance R11 of the triode Q3
It connecting, the control terminal after the collector the second branch series resistance R35 of the triode Q3 with the control chip is electrically connected,
It is electrically connected after collector third the branch series resistance R35 and capacitance C21 of the triode Q3 with power supply ground terminal, three pole
The emitter of pipe Q3 is electrically connected with power supply ground terminal.
As the preferred embodiment of the present invention, which includes water flow sensing unit, resistance R39 and capacitance
C26；The power supply VCC ends of the water flow sensing unit are electrically connected with power supply 5V ends, the power supply ground terminal of the water flow sensing unit
Be electrically connected with power supply ground terminal, after the control terminal first branch series resistance R39 of the water flow sensing unit with the control
The control terminal of chip is electrically connected, after control terminal the second branch series resistance R39 and capacitance C26 of the water flow sensing unit with confession
Power supply ground terminal is electrically connected.
As the present invention preferred embodiment, the temperature detecting module include temperature sensor, resistance R2 and R66 and
Capacitance C2；The power supply VCC ends of the temperature sensor are electrically connected with power supply 5V ends, the power supply of the temperature sensor
End is electrically connected with power supply ground terminal, after the control terminal first branch series resistance R66 of the temperature sensor with the control
The control terminal of coremaking piece is electrically connected, after the control terminal the second branch series resistance R2 of the temperature sensor with power supply
End is electrically connected, and is electrically connected after the control terminal third branch series capacitance C2 of the temperature sensor with power supply ground terminal.
It can be seen from the above technical scheme that in the present invention, since the reseting module is that the control chip carries
It is operated for resetting, the crystal oscillator module provides working frequency for the control chip, and the burning module is the control chip
Program entry operation is provided, the switch power module provides operating voltage for system；The control chip first controls the temperature
Detection module and flow detection module acquisition water temperature and water velocity are spent, then according to systemic presupposition temperature, controls the zero passage
Detection module is detected DC high-voltage output end voltage after the rectification of the switch power module, judges the switch electricity
Then the high direct voltage zero of source module adjusts the relay control by the motor control module and relay control module
The work that molding block passes through the relay disconnection heating tube in the high direct voltage zero moment of the switch power module
Power supply；Therefore, the present invention detects supply voltage zero crossing using the zero passage detection module, then controls mould by relay
Block controls relay in supply voltage zero crossing break-make power supply so that relay is in break-make moment because voltage over zero is without generating
Electric arc, so as to solve in the prior art water management system because being unable to control relay in voltage compared with low spot even voltage mistake
Zero break-make power supply and the defects of lead to relay contact oxidation rapid damage, extend the service life of relay；Also, this
Invention monitors water velocity by the way that chip is controlled to monitor water flow temperature using temperature detecting module, using flow detection module, so
Using the break-make of relay control module control relay the working condition of heating tube is controlled afterwards, so that water tank
In water be maintained at preset steady temperature, and operate using motor control module driving motor so that the water in water tank is able to
Supply outward, the last control chip monitor the running speed of motor by the motor control module, in time described in adjustment
The working time of heating tube, finally so that this water system achievees the purpose that the constant temperature water supply detected based on relay zero-crossing.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, is implemented with the present invention
Example for explaining the present invention, is not construed as limiting the invention together.In the accompanying drawings：
Fig. 1 is the system block diagram of the embodiment of the present invention one.
Fig. 2 is the partial circuit connection figure of the switch power module of the embodiment of the present invention one.
Fig. 3 is the circuit connection diagram of the zero passage detection module of the embodiment of the present invention one.
Fig. 4 is the circuit connection diagram of the relay control module of the embodiment of the present invention one.
Fig. 5 is the circuit connection diagram of the flow detection module of the embodiment of the present invention one.
Fig. 6 is the circuit connection diagram of the temperature detecting module of the embodiment of the present invention one.
Fig. 7 is the circuit connection diagram of the motor control module of the embodiment of the present invention one.
Fig. 8 is the circuit connection diagram of the display control module of the embodiment of the present invention one.
Fig. 9 is the circuit connection diagram of the alarm control module of the embodiment of the present invention one.
Figure 10 is the circuit diagram of the control chip of the embodiment of the present invention one.
Figure 11 is the operation oscillogram of the embodiment of the present invention one.
Figure 12 is the control service chart of the embodiment of the present invention one.
Figure 13 is the concrete structure diagram of the embodiment of the present invention two.
Figure 14 is the control block diagram of the embodiment of the present invention two.
Figure 15 is the control service chart of the embodiment of the present invention two.
In figure：20- switch power modules；21- controls chip；22- reseting modules；23- crystal oscillator modules；24- burning modules；
25- relay control modules；26- motor control modules；27- temperature detecting modules；28- flow detection modules；29- zero passage detections
Module；201- display control modules；202- alarm control modules；1- water storage boxes；The first temperature sensors of 2-；3- heating tubes；4-
First cold water is in charge of；The 4th temperature sensors of 5-；6- flow detection sensors；7- cold water manifold；The second cold water of 8- is in charge of；9-
Three-temperature sensor；10- warm water tubes；11- water mixing valves；12- second temperature sensors；13- stepper motors；The first solenoid valves of 14-；
15- second solenoid valves；16- third solenoid valves；17-PLC controllers；18- display screens；19- hot-water lines.
Specific embodiment
The embodiment of the present invention one：
As shown in figs. 1-12, the embodiment of the present invention one provides a kind of confession water management system detected based on relay zero-crossing
System includes control chip 21, reseting module 22, crystal oscillator module 23 and burning module 24；It is described control chip 21 respectively with
The reseting module 22, crystal oscillator module 23 and burning module 24 are electrically connected；Switch power module 20, zero passage inspection are further included
Survey module 29, relay, relay control module 25, heating tube, motor control module 26, motor, temperature detecting module 27 with
And flow detection module 28；Wherein, the input terminal of the switch power module 20 is electrically connected with city, the switch power module 20
DC low-voltage output terminal with it is described control chip 21 power input be electrically connected, the direct current of the switch power module 20
The input terminal of high-voltage output end and the zero passage detection module 29 is electrically connected, the effect of the switch power module 20 be by
Alternating current is converted to DC low-voltage electricity and DC high-voltage；The output terminal of the zero passage detection module 29 and the control chip 21
Control terminal is electrically connected；The effect of the zero passage detection module 29 is direct current after the rectification for acquiring the switch power module 20
High-voltage output end information of voltage judges the high direct voltage zero of the switch power module 20；The relay control module
25 include relay, and the common end of the relay is connect with alternating current firewire, the normally open end of the relay control module 25
It is electrically connected after series connection alternating current zero curve with the heating tube, the signal control terminal of the relay control module 25 and the motor control
The output terminal electrical connection of molding block 26；The effect of the relay control module 25 is to control the heating tube by relay
Power supply break-make；The control terminal of the motor control module 26 and the control terminal of the control chip 21 are electrically connected,
The output terminal of the motor control module 26 is electrically connected with the input terminal of the motor；The motor control module 26 is used to control
Make the break-make of the motor and the power supply of the relay control module 25；The control terminal of the temperature detecting module 27 with
The control terminal of the control chip 21 is electrically connected, for detecting water temperature；The control terminal of the flow detection module 28 with it is described
The control terminal of chip 21 is controlled to be electrically connected, for detecting water velocity.In the embodiment of the present invention one, the reseting module 22
Reset operation is provided for the control chip 21, the crystal oscillator module 23 provides working frequency for the control chip 21, described
Burning module 24 provides program entry operation for the control chip 21, and the switch power module 20 provides work electricity for system
Pressure；The control chip 21 first controls the temperature detecting module 27 and flow detection module 28 to acquire water temperature and water velocity,
Then according to systemic presupposition temperature, control the zero passage detection module 29 high to direct current after the rectification of the switch power module 20
Pressure output end voltage is detected, and is judged the high direct voltage zero of the switch power module 20, is then passed through the motor
Control module 26 and relay control module 25 adjust the relay control module 25 in the straight of the switch power module 20
Working power of the high pressure zero moment by the relay disconnection heating tube is flowed, relay zero-crossing inspection is based on so as to reach
The purpose of the constant temperature water supply control of survey.The embodiment of the present invention one detects supply voltage zero passage using the zero passage detection module 29
Then point controls relay in supply voltage zero crossing break-make power supply so that relay is logical by relay control module 25
Disconnected moment because voltage over zero is without generating electric arc, so as to solve in the prior art water management system because being unable to control relay
Device causes relay contact to aoxidize rapid the defects of damaging in voltage compared with low spot even voltage over zero break-make power supply, extends
The service life of relay；Also, the present invention is by controlling chip 21 to monitor water flow temperature, profit using temperature detecting module 27
Water velocity is monitored with flow detection module 28, the break-make for then controlling relay using relay control module 25 to heat
The working condition of pipe is controlled, so that the water in water tank is maintained at preset steady temperature, and controls mould using motor
26 driving motor of block operates so that the water in water tank is supplied outward, and the last control chip 21 passes through the motor control
Molding block 26 monitors the running speed of motor, adjusts the working time of the heating tube in time, finally so that this water system reaches
To the purpose of the constant temperature water supply detected based on relay zero-crossing.
As illustrating for the embodiment of the present invention one, the water management system that should be detected based on relay zero-crossing is further included
There is display control module 201, the control terminal of the display control module 201 and the control chip 21 is electrically connected, for controlling
Displays temperature processed.The display control module 201 mainly shows content, can be liquid crystal display, as long as in showing
Appearance can also utilize attached drawing the electronic component of different model to be selected to be combined into the display control mould according to actual demand
The driving circuit of block 201.The water management system based on relay zero-crossing detection has further included alarm control module 202, institute
It states alarm control module 202 and the control terminal of the control chip 21 is electrically connected, alarm for controlling.The display control mould
Block 201 mainly drives buzzer to alarm, and attached drawing can be utilized to select the electronics member device of different model according to actual demand
Part is combined into the driving circuit of buzzer.In the relay control module 25, the control terminal of the relay K1 with it is described
The control terminal of chip 21 is controlled to be electrically connected, is electrically connected with the heating tube after the normally open end series connection alternating current of the relay K1
It connects, the break-make of the power supply of heating tube is mainly controlled by the control chip 21.In addition, in the embodiment of the present invention one,
The zero passage detection module 29 includes resistance R10, R11, R30, R31, R32, R33, R34, R35, capacitance C19, C20, C21, three
Pole pipe Q2, Q3 and opto-coupler chip PQ1；After the A ends series resistance R30 of the opto-coupler chip PQ1 with the switch power module
20 DC high-voltage output end is electrically connected, and K ends and the power supply ground terminal of the opto-coupler chip PQ1 are electrically connected, the optocoupler core
The C-terminal of piece PQ1 is electrically connected with power supply 5V ends, and the E ends of the opto-coupler chip PQ1 are sequentially connected in series resistance R32 and R31 with power supply
End is electrically connected；It is electrically connected after the collector first branch series resistance R10 of the triode Q2 with power supply 5V ends, described three
It is electrically connected after the collector the second branch series resistance R34 of pole pipe Q2 with the collector of the triode Q3, the triode
It is electrically connected after the collector third branch series capacitance C20 of Q2 with power supply ground terminal；The base stage first branch of the triode Q2
It is electrically connected after being sequentially connected in series resistance R33 and capacitance C19 with power supply ground terminal, the base stage the second branch of the triode Q2 is gone here and there successively
It is electrically connected after joining resistance R33 and R31 with power supply ground terminal, emitter and the power supply ground terminal of the triode Q2 are electrically connected；Institute
It is electrically connected after stating the collector first branch series resistance R11 of triode Q3 with power supply 5V ends, the current collection of the triode Q3
Control terminal after the second branch series resistance R35 of pole with the control chip 21 is electrically connected, the collector of the triode Q3
It is electrically connected after third branch series resistance R35 and capacitance C21 with power supply ground terminal, the emitter of the triode Q3 is with power supply
End is electrically connected.The embodiment of the present invention one can utilize attached drawing the electronic component of different model to be selected to combine according to actual demand
Into the operating circuit of zero passage detection module 29, since the model of the electronic component of circuit is different when the application scenario difference, and,
The innovative point of the embodiment of the present invention one is to create using the specific circuit connection diagram, and therefore, the embodiment of the present invention one is given
Go out specific circuit connection diagram, do not provide the model of each specific component.The flow detection module 28 includes water
Flow sensor, resistance R39 and capacitance C26；The power supply VCC ends of the water flow sensing unit are electrically connected with power supply 5V ends,
The power supply ground terminal of the water flow sensing unit is electrically connected with power supply ground terminal, the control terminal first branch of the water flow sensing unit
Control terminal after series resistance R39 with the control chip 21 is electrically connected, the control terminal the second branch of the water flow sensing unit
It is electrically connected after series resistance R39 and capacitance C26 with power supply ground terminal.The temperature detecting module 27 includes temperature sensing
Device, resistance R2 and R66 and capacitance C2；The power supply VCC ends of the temperature sensor are electrically connected with power supply 5V ends, institute
The power supply ground terminal and power supply ground terminal for stating temperature sensor are electrically connected, the control terminal first branch string of the temperature sensor
It is electrically connected after joining resistance R66 with the control terminal for controlling chip 21, the control terminal the second branch string of the temperature sensor
Be electrically connected after joining resistance R2 with power supply ground terminal, after the control terminal third branch series capacitance C2 of the temperature sensor with
Power supply ground terminal is electrically connected.In the embodiment of the present invention one, the water flow sensing unit and temperature sensor are existing portion
Part, user can select the water flow sensing unit and temperature sensor of different performance according to actual demand.The type of the control chip 21
Number for embedded chip R5F2L357C, certainly, user can also select the control chip 21 of other models according to actual demand,
Main can realize controls and receives information.Obviously, the reseting module 22, crystal oscillator module 23, burning module 24 and motor
Control module 26 is existing drive module.
As can be seen that the course of work of the embodiment of the present invention one is from attached drawing 1-12：The control chip 21 is to circuit
Initialization process is carried out, then detects whether relay status will change, if desired changes the working condition of relay, then passes through
The zero crossing of 29 monitoring input voltage of zero passage detection module, then the control chip 21 is using described in internal processes control
Relay carries out delay process, changes the working condition of the relay in the moment that next zero crossing arrives so that relay
Device break-make moment because voltage over zero without generate electric arc, so as to solve in the prior art water management system because that can not control
Relay processed causes compared with low spot even voltage over zero break-make power supply what relay contact oxidation damaged rapidly to lack in voltage
It falls into, extends the service life of relay；Also, the present invention is by controlling chip 21 to monitor flow using temperature detecting module 27
Temperature is monitored water velocity using flow detection module 28, the break-make of relay is then controlled using relay control module 25
So that the working condition of heating tube is controlled, so that the water in water tank is maintained at preset steady temperature, and electricity is utilized
26 driving motor of machine control module operates so that the water in water tank is supplied outward, and the last control chip 21 passes through institute
The running speed that motor control module 26 monitors motor is stated, adjusts the working time of the heating tube in time, finally so that this confession
Water system achievees the purpose that the constant temperature water supply detected based on relay zero-crossing.
Inventive embodiments two：
As illustrated in figs. 13-15, the embodiment of the present invention two discloses a kind of confession water management system detected based on relay zero-crossing
System, includes water storage box 1, the first temperature sensor 2, heating tube 3, the 4th temperature sensor 5, flow detection sensor 6, cold water
Manifold 7, third temperature sensor 9, warm water tube 10, water mixing valve 11, second temperature sensor 12, stepper motor 13, hot-water line 19
And PLC controller 17；In the embodiment of the present invention two, the PLC controller 17 is internally provided with control chip 21, resets mould
Block 22, crystal oscillator module 23, burning module 24, switch power module 20, zero passage detection module 29, relay, relay control mould
Block 25, heating tube and motor control module 26；It is described control chip 21 respectively with the reseting module 22, crystal oscillator module 23,
Burning module 24, switch power module 20, zero passage detection module 29, relay, relay control module 25, heating tube and electricity
Machine control module 26 is electrically connected, and the relay is electrically connected with the heating tube 3, utilizes the relay control module 25
The break-make of relay is controlled to achieve the purpose that control 3 break-make of heating tube.Wherein, the PLC controller 17 is fixed on institute
It states on water storage box 1, first temperature sensor 2 is fixed in the water storage box 1, and the heating tube 3 is fixed on the water storage
The interior bottom of case 1；The cold water manifold 7 is fixed on the water storage box 1 and is connected with the inner cavity of the water storage box 1；Described
Four temperature sensors 5 are fixed on the inner wall of the cold water manifold 7, and it is total that the flow detection sensor 6 is fixed on the cold water
On the inner wall of pipe 7；The hot water inlet of the water mixing valve 11 is connected by the hot-water line 19 with the inner cavity of the water storage box 1, institute
The cooling water inlet for stating water mixing valve 11 is connected by the cold water manifold 7 with extraneous cold water source, the warm water outlet of the water mixing valve 11
It is connected by the warm water tube 10 with extraneous warm water source；The second temperature sensor 12 is fixed on the inner wall of the hot-water line 19
On, the third temperature sensor 9 is fixed on the inner wall of the warm water tube 10；The rotary output axis of the stepper motor 13 with
The driving end engagement rotation connection of the water mixing valve 11；The PLC controller 17 respectively with first temperature sensor 2, plus
Heat pipe 3, the 4th temperature sensor 5, flow detection sensor 6, third temperature sensor 9, second temperature sensor 12 and stepping
Motor 13 is electrically connected.In embodiments of the present invention, the PLC controller 17, the first temperature sensor 2, heating tube the 3, the 4th
Temperature sensor 5, flow detection sensor 6, third temperature sensor 9, second temperature sensor 12 and stepper motor 13 are
Existing legacy device, using traditional electrical connection, i.e. the power input end of PLC controller 17 and heating tube 3 and outside
Feeder ear is electrically connected, the power output end of the PLC controller 17 respectively with first temperature sensor 2, heating tube 3,
4th temperature sensor 5, flow detection sensor 6, third temperature sensor 9, second temperature sensor 12 and stepper motor 13
Power end be electrically connected, the control terminal of the PLC controller 17 respectively with first temperature sensor 2, heating tube 3, the
Four temperature sensors 5, flow detection sensor 6, third temperature sensor 9, second temperature sensor 12 and stepper motor 13
Control terminal is electrically connected；First temperature sensor 2 is fixed in the inner cavity of the water storage box 1 and is immersed in water；It is described
Heating tube 3 is fixed in the inner cavity of the water storage box 1 and is immersed in water；Obviously, the water mixing valve 11 is existing product, at this
In inventive embodiments, since the control handle of 11 upper end of water mixing valve is gear-like control handle, it is fixed on the water mixing valve
Stepper motor 13 on 11 is engaged by the teeth on real-time 13 output rotation axis of stepper motor with gear-like control handle, so as to
So that the stepper motor 13 engages connection with the control handle of the water mixing valve 11, it is cold due to being provided in the water mixing valve 11
Water inlet, hot water inlet and warm water outlet, can be adjusted by the control handle of the water mixing valve 11 in the water mixing valve 11
The hot water inlet at hot water inlet end in the cold water inlet at cooling water inlet end and the water mixing valve 11, so as to reach control institute
State the warm water export volume and its temperature of the warm water port of export in water mixing valve 11；Then by third temperature sensor 9 by the mixed water
Warm water discharge-end temperature information is transferred in PLC controller 17 on valve 11；So as to form negative-feedback regu- lation mechanism, then PLC is controlled
Device 17 processed continues to control stepper motor 13 that the water mixing valve 11 is driven to be rotated, adjust at any time in the water mixing valve 11 cold water into
The hot water inlet at hot water inlet end in the mouth cold water inlet at end and the water mixing valve 11 so that warm in the water mixing valve 11
The temperature of water outlet end keeps constant state, also, in water utilizing process, and PLC controller 17 controls calandria to be added simultaneously
Heat provides enough hot water；In addition, in the present invention, when starting with water, the PLC controller 17 first detects first successively
The temperature of temperature sensor 2 and second sensor, if the temperature of second temperature sensor 12 is more than the temperature of the first temperature sensor 2
Degree, and the temperature of second temperature sensor 12 mutates, then 13 gear of stepper motor is controlled to drive by PLC controller 17 mixed
11 backwards rotation of water valve increases cold water inflow, reduces hot water inflow, prevents stepper motor 13 from driving the hot water of water mixing valve 11
The phenomenon that scald user is generated due to aperture is excessive, so as to achieve the purpose that protect user safe to use.
Further, 3 dry combustion method phenomenon of heating tube occurs for water storage box 1 in order to prevent, and water level inspection is provided in the water storage box 1
Instrument is surveyed, the water level detection gauge is fixed on the bottom of the water storage box 1, after the water inside water storage box 1 is used up completely, water level inspection
Surveying instrument can transfer information in PLC controller 17, and then PLC controller 17 turns off the work of heating tube 3 by control port
Power supply so that the power-off of heating tube 3 is stopped, and so as to play protection circuit, avoids causing circuit high temperature due to 3 dry combustion method of heating tube
Burning；
In addition, the first cold water that cold water manifold 7 includes drainage cold water to the water storage box 1 is in charge of 4 and drainage cold water
The second cold water to the water mixing valve 11 is in charge of 8；4th temperature sensor 5 is fixed on the pipe that first cold water is in charge of 4
In wall.In embodiments of the present invention, the cold water manifold 7 passes through three mouthfuls of conduit couplings so that first cold water is in charge of 4 Hes
Second cold water is in charge of 8 connections；Obviously, extraneous one branch of cold water is in charge of 4 by the first cold water and is drained into the water storage box 1, separately
One branch is in charge of the 8 cooling water inlet ends for draining into the water mixing valve 11 by the second cold water.
Also, should the first solenoid valve 14 and the second electromagnetism be further included based on the water management system that relay zero-crossing detects
Valve 15；First solenoid valve 14 is set to first cold water and is in charge of on 4 the cold water of the water storage box 1 is controlled to intake
Amount, the second solenoid valve 15 are set to second cold water and are in charge of for controlling the cold water inflow of the water mixing valve 11 on 8,
First solenoid valve 14 and second solenoid valve 15 are electrically connected respectively with the PLC controller 17；It should be based on relay zero-crossing
The water management system of detection has further included third solenoid valve 16, and the third solenoid valve 16 is set on the hot-water line 19 and uses
In the hot water effluent's amount for controlling the water storage box 1, the third solenoid valve 16 is electrically connected with the PLC controller 17；The base
Display screen 18 is further included in the water management system of relay zero-crossing detection, the display screen 18 is fixed on the water storage box 1
Above and with the PLC controller 17 it is electrically connected.Obviously, in embodiments of the present invention, first solenoid valve 14, the second electromagnetism
Valve 15, third solenoid valve 16 and display screen 18 are existing legacy device, using traditional electrical connection, i.e., described PLC controls
The power output end of device 17 respectively with first solenoid valve 14, second solenoid valve 15, third solenoid valve 16 and display screen 18
Power end is electrically connected, the control terminal of the PLC controller 17 respectively with first solenoid valve 14, second solenoid valve 15, the
The control terminal of three solenoid valves 16 and display screen 18 is electrically connected；Therefore, the display screen 18 is used to show the hot water in water storage box 1
Temperature, cold water flow and leaving water temperature give the clearly visual understanding of user one；The PLC controller 17 passes through described
One solenoid valve 14 achievees the purpose that cold water inflow in the control water storage box 1 so that the cold water inflow of the water storage box 1 is not
It can be excessive or very few；Then the PLC controller 17 reaches hot water in the control water storage box 1 by the third solenoid valve 16
The purpose of water yield so that hot water effluent's amount of the water storage box 1 is effectively controlled；Then the PLC controller 17 passes through
The second solenoid valve 15 achievees the purpose that control the cold water inflow of the water mixing valve 11 so that the cold water of the water mixing valve 11
Inflow is effectively controlled, and by second solenoid valve 15 and third solenoid valve 16, can control the water outlet of the hot water at any time
The inflow of amount and the cold water plays the purpose for assisting 11 constant temperature of the water mixing valve output warm water, when event occurs for water mixing valve 11
During barrier, the PLC controller 17 can control cold water water yield and the water storage by second solenoid valve 15 and third solenoid valve 16
Hot water effluent's amount in case 1, avoids influencing the operation of entire hot-water heating system due to the obstacle of water mixing valve 11.
In embodiments of the present invention, when power on set leaving water temperature after, in the PLC controller 17 first initializes
Then portion's memory data controls the water mixing valve 11 to reset；Then the PLC controller 17 passes through the first temperature sensor 2
Detect the water temperature inside the water storage box 1；Stop heating if when the temperature in the water storage box 1 reaches 90 degrees Celsius or more,
If reaching this temperature not yet, the heating tube 3 is controlled to carry out heating to the water in the water storage box 1 and is taken the photograph until reaching 90
It is more than family name's degree；Then the PLC controller 17 detects the water flow of the cold water manifold 7 by flow detection sensor 6；If institute
Stating cold water manifold 7 has cold water inflow, then the PLC controller 17 first wait for 5S cause the cold water manifold 7 air empty with
The temperature for exempting to influence the first temperature sensor 2 judges that then cycle criterion compares the detection temperature of second temperature sensor 12
Whether stablize and not less than the first temperature sensor 2 detection temperature until second temperature sensor 12 detection temperature stabilization and
Not less than the detection temperature of the first temperature sensor 2, then PLC controller 17 is according to the detection temperature of second temperature sensor 12
And the water flow of the cold water manifold 7 judges the rotation step number of the stepper motor 13 to control, and then passes through the stepping
The rotation step number of motor 13 is adjusted in the water mixing valve 11 in the cold water inlet at cooling water inlet end and the water mixing valve 11
The hot water inlet at hot water inlet end, so as to reach the warm water export volume and its temperature that control the warm water port of export in the water mixing valve 11
Degree；Therefore, the PLC controller 17 passes through the first temperature sensor 2, heating tube 3, the 4th temperature sensor described in cycle detection
5th, the detection data of flow detection sensor 6, third temperature sensor 9, second temperature sensor 12 utilizes the third temperature
Sensor 9 forms close loop negative feedback regulation mechanism so that it is described mixed that PLC controller 17 can reach control by stepper motor 13
11 constant temperature of water valve exports the purpose of warm water.In the embodiment of the present invention two, on the one hand, the PLC controller 17 is examined by recycling
Survey first temperature sensor 2, heating tube 3, the 4th temperature sensor 5, flow detection sensor 6, third temperature sensor
9th, the detection data of second temperature sensor 12 forms close loop negative feedback regulation mechanism using the third temperature sensor 9, makes
Control 11 constant temperature of water mixing valve can be reached by 26 Driving Stepping Motor 13 of motor control module by obtaining PLC controller 17
The purpose of water supply；On the other hand, the PLC controller 17 detects supply voltage zero passage using the zero passage detection module 29
Then point controls relay in supply voltage zero crossing break-make power supply so that relay is logical by relay control module 25
Disconnected moment because voltage over zero is without generating electric arc, so as to solve in the prior art water management system because being unable to control relay
Device causes relay contact to aoxidize rapid the defects of damaging in voltage compared with low spot even voltage over zero break-make power supply, extends
The service life of relay.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can in other embodiments be realized in the case where not departing from the spirit or scope of this practicality.Therefore, this practicality
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide range caused.
Claims (6)
1. it is a kind of based on relay zero-crossing detection water management system, include control chip, reseting module, crystal oscillator module with
And burning module；The control chip is electrically connected respectively with the reseting module, crystal oscillator module and burning module；Its feature
It is, has further included switch power module, zero passage detection module, relay, relay control module, heating tube, motor control
Module, motor, temperature detecting module and flow detection module；Wherein,
The input terminal of the switch power module is electrically connected with city, the DC low-voltage output terminal of the switch power module with it is described
The power input of chip is controlled to be electrically connected, the DC high-voltage output end of the switch power module and the zero passage detection mould
The input terminal of block is electrically connected, and the effect of the switch power module is alternating current being converted to DC low-voltage electricity and high direct voltage
Electricity；
The output terminal of the zero passage detection module and the control terminal of the control chip are electrically connected；The zero passage detection module
Effect is DC high-voltage output end information of voltage after the rectification for acquiring the switch power module, judges the Switching Power Supply
The high direct voltage zero of module；
The relay control module includes relay, and the common end of the relay is connect with alternating current firewire, the relay
It is electrically connected after the normally open end series connection alternating current zero curve of device control module with the heating tube, the signal control of the relay control module
End processed is electrically connected with the output terminal of the motor control module；The effect of the relay control module is through relay control
Make the break-make of the power supply of the heating tube；
The control terminal of the motor control module and the control terminal of the control chip are electrically connected, the motor control module
The input terminal of output terminal and the motor is electrically connected；The motor control module is used to control the motor and the relay
The break-make of the power supply of control module；
The control terminal of the temperature detecting module and the control terminal of the control chip are electrically connected, for detecting water temperature；
The control terminal of the flow detection module and the control terminal of the control chip are electrically connected, for detecting water velocity；
The reseting module provides reset operation for the control chip, and the crystal oscillator module provides work for the control chip
Frequency, the burning module provide program entry operation for the control chip, and the switch power module provides work for system
Make voltage；The control chip first controls the temperature detecting module and flow detection module to acquire water temperature and water velocity, so
Afterwards according to systemic presupposition temperature, the zero passage detection module is controlled to export high direct voltage after the rectification of the switch power module
Terminal voltage is detected, and is judged the high direct voltage zero of the switch power module, is then passed through the motor control module
The relay control module is adjusted with relay control module in the high direct voltage zero moment of the switch power module to lead to
The working power that the relay disconnects the heating tube is crossed, so as to reach the constant temperature water supply control detected based on relay zero-crossing
Purpose.
2. a kind of water management system based on relay zero-crossing detection according to claim 1, it is characterised in that：The base
Display control module, the display control module and the control have been further included in the water management system of relay zero-crossing detection
The control terminal of chip is electrically connected, for controlling displays temperature.
3. a kind of water management system based on relay zero-crossing detection according to claim 1, it is characterised in that：The base
Alarm control module, the alarm control module and the control have been further included in the water management system of relay zero-crossing detection
The control terminal of chip is electrically connected, and is alarmed for controlling.
4. a kind of water management system based on relay zero-crossing detection according to claim 1, it is characterised in that：It is described
Zero passage detection module includes resistance R10, R11, R30, R31, R32, R33, R34, R35, capacitance C19, C20, C21, triode
Q2, Q3 and opto-coupler chip PQ1；It is straight with the switch power module after the A ends series resistance R30 of the opto-coupler chip PQ1
It flows high-voltage output end to be electrically connected, K ends and the power supply ground terminal of the opto-coupler chip PQ1 are electrically connected, the opto-coupler chip PQ1's
C-terminal is electrically connected with power supply 5V ends, and the E ends of the opto-coupler chip PQ1 are sequentially connected in series resistance R32 and R31 and power supply ground terminal is electrical
Connection；It is electrically connected after the collector first branch series resistance R10 of the triode Q2 with power supply 5V ends, the triode Q2
Collector the second branch series resistance R34 after be electrically connected with the collector of the triode Q3, the collection of the triode Q2
It is electrically connected after electrode third branch series capacitance C20 with power supply ground terminal；The base stage first branch of the triode Q2 is gone here and there successively
It is electrically connected after joining resistance R33 and capacitance C19 with power supply ground terminal, the base stage the second branch of the triode Q2 is sequentially connected in series resistance
It is electrically connected after R33 and R31 with power supply ground terminal, emitter and the power supply ground terminal of the triode Q2 are electrically connected；Three pole
It is electrically connected after the collector first branch series resistance R11 of pipe Q3 with power supply 5V ends, the collector second of the triode Q3
Control terminal after branch series resistance R35 with the control chip is electrically connected, the collector third branch of the triode Q3
It is electrically connected after series resistance R35 and capacitance C21 with power supply ground terminal, emitter and the power supply ground terminal of the triode Q3 electrically connect
It connects.
5. a kind of water management system based on relay zero-crossing detection according to claim 1, it is characterised in that：It is described
Flow detection module includes water flow sensing unit, resistance R39 and capacitance C26；The power supply VCC ends of the water flow sensing unit
It is electrically connected with power supply 5V ends, power supply ground terminal and the power supply ground terminal of the water flow sensing unit are electrically connected, and the flow passes
Control terminal after the control terminal first branch series resistance R39 of sensor with the control chip is electrically connected, the flow sensing
It is electrically connected after control terminal the second branch series resistance R39 and capacitance C26 of device with power supply ground terminal.
6. a kind of water management system based on relay zero-crossing detection according to claim 1, it is characterised in that：It is described
Temperature detecting module includes temperature sensor, resistance R2 and R66 and capacitance C2；The power supply of the temperature sensor
VCC ends are electrically connected with power supply 5V ends, and power supply ground terminal and the power supply ground terminal of the temperature sensor are electrically connected, the temperature
Spend the control terminal electric connection with the control chip, the temperature after the control terminal first branch series resistance R66 of sensor
It is electrically connected after the control terminal the second branch series resistance R2 of sensor with power supply ground terminal, the control of the temperature sensor
It is electrically connected after holding third branch series capacitance C2 with power supply ground terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133943.XA CN108227785A (en) | 2018-02-09 | 2018-02-09 | A kind of water management system based on relay zero-crossing detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133943.XA CN108227785A (en) | 2018-02-09 | 2018-02-09 | A kind of water management system based on relay zero-crossing detection |
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| CN108227785A true CN108227785A (en) | 2018-06-29 |
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| CN201810133943.XA Pending CN108227785A (en) | 2018-02-09 | 2018-02-09 | A kind of water management system based on relay zero-crossing detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683537A (en) * | 2019-01-31 | 2019-04-26 | 厦门阿玛苏电子卫浴有限公司 | A kind of flow signal detection circuit, control system and control method |
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2018
- 2018-02-09 CN CN201810133943.XA patent/CN108227785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683537A (en) * | 2019-01-31 | 2019-04-26 | 厦门阿玛苏电子卫浴有限公司 | A kind of flow signal detection circuit, control system and control method |
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