CN201066453Y - Intelligent liquid level controller - Google Patents
Intelligent liquid level controller Download PDFInfo
- Publication number
- CN201066453Y CN201066453Y CNU2007201432243U CN200720143224U CN201066453Y CN 201066453 Y CN201066453 Y CN 201066453Y CN U2007201432243 U CNU2007201432243 U CN U2007201432243U CN 200720143224 U CN200720143224 U CN 200720143224U CN 201066453 Y CN201066453 Y CN 201066453Y
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- water
- water pump
- liquid level
- microcontroller
- level controller
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Abstract
The utility model relates to a fluid-level control device applied to a drainage system, particularly relates to an intelligent liquid-level controller, comprising at least two sampling electrodes, a sampling signal processing unit, a micro-controller, a water-pump driving circuit and a pump. When the water-level detecting end is submerged by the water, the liquid-level controller communicates with the public end, and a sampling signal that indicates the water level is generated; the water-level signal collected by the sampling electrode is processed by the sampling signal processing unit and later transmitted to the micro-controller; the water-pump driving circuit is controlled by the corresponding control signal exported from a micro-processor to operate, so that the water level is accurately judged and the water pump is controlled to start operation for drainage. The sampling electrode comprises a public end and at least one water-level detecting end; and the position of the water-level detecting end is higher than the position of the public end.
Description
Technical field
The utility model relates to the fluid level control device in a kind of unwatering system, particularly a kind of intelligent liquid level controller.
Background technology
In the existing unwatering system; liquid level control is adopted float switch sensed water level height mostly and is sent control signal; and control water pump by analog control circuit and realize automatic drain function; with the protection of electrothermal relay realization to motor; yet because the degree of accuracy of float switch is subjected to the influence of its physical construction, machining precision and water quality condition; therefore the accuracy of draining control is difficult to control, and also limited the entire controller life-span self of float switch mechanical life.And electrothermal relay is difficult to the overload of motor is made accurate protection; because cesspit may be anhydrous for a long time; can be directed at water pump does not move and corrosion for a long time; so the inspection function of controller can detect the signal that water pump does not move for a long time; patrol and examine operation and carry out the automatic regular short time, to prevent the corrosion of water pump.
The utility model content
The utility model has overcome above-mentioned shortcoming, and the intelligent liquid level controller of a kind of high sensitivity, high reliability is provided.
The technical scheme in the invention for solving the technical problem is: a kind of intelligent liquid level controller, comprise at least two sampling electrodes, the sampled signal processing unit, microcontroller, water pump driving circuit and water pump, the water level signal of described sampling electrode collection is input to microcontroller after handling by described sampled signal processing unit, control described water pump driving circuit by described microprocessor output control signal corresponding and drive pump operation, described sampling electrode comprises a common port and at least one water level detecting end, and the position of described water level detecting end is higher than the common port position.
Described sampled signal processing unit can comprise rectification circuit, comparator circuit and the signal drive circuit that connects in turn.
Also can comprise a stoppage in transit operation detecting circuit, whether be used to detect the water pump driving circuit, and send to described microcontroller for duty.
Also can comprise an operation detecting circuit, be used to detect the running status of water pump, send to described microcontroller.
Described common port can be connected with alternating current, and a plurality of water level detecting ends are separately positioned on different height and positions.
Described water pump driving circuit can comprise the contactor that is driven by triode, the base stage of described triode receives the control signal of being sent by described microcontroller, collector links to each other with described contactor coil, and the normally opened contact of described contactor is connected between power supply and the water pump.
Described stoppage in transit operation detecting circuit can comprise the normally opened contact that is arranged on contactor in the described water pump driving circuit, the two ends of described normally opened contact are connected to+and the signal input part of 5V power supply and microcontroller.
Described operation detecting circuit can comprise the current transformer that is arranged in the water pump, and the output of described current transformer is input in the described microcontroller after the rectification through diode and electric capacity successively.
Described water pump can be two, drives by two-way water pump driving circuit respectively.
When the utility model does not have the water level detecting end in water logging, with the common port conducting, generation can characterize the sampled signal of water level, described sampled signal is input to microcontroller after handling by described sampled signal processing unit, by described microprocessor according to detected water level, the output control signal corresponding is controlled described water pump driving circuit and is driven pump operation, thereby can accurately judge water level and control the startup operation of water pump, realizes draining timely and effectively.In addition; the utility model adopts current transformer directly to detect motor operating current; compare by described microcontroller and setting value, and the operation of control water pump, thereby the accurate protection of realization overload; and by the contactor normally opened contact between described being connected+5V power supply and the microcontroller; can whether work by perception water pump driving circuit, and then judge whether water pump moves, and under the control of described microcontroller; make the water pump operation in short-term regularly that does not move for a long time, prevent that rust is dead.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is a mounting structure synoptic diagram of the present utility model;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
As shown in fig. 1, the utility model comprises four sampling electrodes that connect successively, rectification circuit, comparator circuit, signal drive circuit, microcontroller, water pump driving circuit and water pump, the water level signal of described sampling electrode collection is input to microcontroller after handling by described sampled signal processing unit, control described water pump driving circuit by described microprocessor output control signal corresponding and drive pump operation, as shown in Figure 2, described sampling electrode comprises a common port 1 and three water level detecting ends 2,3,4, described common port 1 is lower than the position of each water level detecting end, be positioned at the bottom in pond, three water level detecting ends are in different height respectively, are used to detect different water levels.Two water pump M1, M2 also are arranged on the bottom in pond.
As shown in Figure 3, power frequency AC is by the former limit of a transformer T1 of L, N end input back connection, and common port 1 is connected to the secondary coil of described transformer T1 in the described level electrode, output 12V alternating current.The output of in addition two secondary coils of described transformer T1 separately after overcommutation and filtering, respectively output+24V direct current and+the 5V direct current, described+5V output through voltage stabilizer U3 voltage stabilizing after, provide working power to microcontroller U1.
In three water level detecting ends in the described level electrode, 2 ends are the low-water level end, 3 ends are the high water stage end, 2, the signal that 3 terminations are received is all by being input to the input end of comparer U2 after rectifier bridge B1 rectification and capacitor C 11 filtering, 4 ends are superelevation water level end, be input to another input end of comparer U2 after the 4 ends process diode D6 rectification, above-mentioned two input signals of comparer U2 respectively with two reference voltage signals relatively after, export two comparative results respectively through triode Q3/Q4 drive and photoelectrical coupler U4/U5 coupling after input to described microcontroller U1 two control end RC0/RC1 hold.
When the ponding in the pond arrives water level detecting termination electrode place water level, reach 3 ends as water level, because the electric conductivity of water, 3 ends obtain the 12V alternating current identical with 1 end, B1 is made into DC voltage with alternating current through rectifier bridge, compares, drives photoelectrical coupler U4 by comparer U2 again, thereby liquid level signal is delivered to the input port of microcontroller U1, by described microcontroller U1 control pump operation, realize draining.When water level drops to when being lower than 2 ends, 2 ends disconnect and being connected with the conduction of 1 end, and described microcontroller U1 receives the liquid level signal of 1 end, and controls described water pump stoppage in transit, and drainage procedure stops.And when water level reached the superelevation water level of 4 ends, described microcontroller U1 received the liquid level signal of 4 ends, and controlled described two water pumps and turn round simultaneously, discharged ponding in the pond fast.
The signal that described microcontroller U1 sends according to described comparer U2, judge and start or stop described water pump, and send two path control signal, control the work of two water pumps respectively, described control signal is connected to the base stage of triode Q1/Q2 respectively separately after photoelectrical coupler U6/U7 coupling, drive relay Z1/Z2 coil respectively through described triode, thereby the contact action of control corresponding relays makes the corresponding water pump M1/M2 that links to each other with described relay Z1/Z2 contact start work.
Described operation detecting circuit is used for detecting the electric current that flows through on the water pump motor coil, two-way operation detecting circuit structure is identical, with the operation detecting circuit that links to each other with described water pump M1 is example, in described water pump M1, current transformer is set, the signal that described current transformer collects has terminal 9, the input of 10 ends, after diode D3 and capacitor C 9, detected ac current signal is rectified into d. c. voltage signal, be input to the control end RA3 end of microcontroller U1, in like manner, be arranged on the signal gathered of the current transformer among the fast water pump M2 through terminal 11, the input of 12 ends, after diode D4 and capacitor C 10, the d. c. voltage signal after the rectification is input to the RA5 end of described microcontroller U2.Described microcontroller is after receiving above-mentioned detection signal, compare with ratings, by controlling described water pump driving circuit, with the working current overrate, be that the corresponding water pump of overlond running cuts off, if draining is not finished as yet simultaneously, then control another starting mode of pump running.
Described stoppage in transit operation detecting circuit comprises normally opened contact 5-6 end and the 7-8 end that is arranged among described contactor Z1, the Z2, the two ends of described every pair of normally opened contact are connected to+signal input part of 5V power supply and microcontroller U1, when described microcontroller U1 by patrolling and examining automatically, detect arbitrary normally opened contact not action for a long time wherein, promptly because the pond does not have ponding for a long time, water pump does not move for a long time, therefore can cause the water pump rust dead, can regularly play pump in short-term by the microprocessor controls water pump, in order to avoid the water pump rust is dead.
In addition, also can use by turns automatically, avoid the two water pumps unbalanced life-span that influences entire equipment that causes of wearing and tearing by described microprocessor controls two water pumps.Described microcontroller can be single-chip microcomputer, Programmable Logic Controller (PLC), embedded controller (MCU) etc.
More than intelligent liquid level controller provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. intelligent liquid level controller, it is characterized in that: comprise at least two sampling electrodes, sampled signal processing unit, microcontroller, water pump driving circuit and water pumps, the water level signal of described sampling electrode collection is input to microcontroller after handling by described sampled signal processing unit, control described water pump driving circuit by described microprocessor output control signal corresponding and drive pump operation, described sampling electrode comprises a common port and at least one water level detecting end, and the position of described water level detecting end is higher than the common port position.
2. intelligent liquid level controller according to claim 1 is characterized in that: also comprise a stoppage in transit operation detecting circuit, whether be used to detect the water pump driving circuit for duty, and send to described microcontroller.
3. intelligent liquid level controller according to claim 1 is characterized in that: also comprise an operation detecting circuit, be used to detect the running status of water pump, send to described microcontroller.
4. intelligent liquid level controller according to claim 1 is characterized in that: described common port is connected with alternating current, and a plurality of water level detecting ends are separately positioned on different height and positions.
5. intelligent liquid level controller according to claim 2, it is characterized in that: described stoppage in transit operation detecting circuit comprises the normally opened contact that is arranged on contactor in the described water pump driving circuit, the two ends of described normally opened contact are connected to+and the signal input part of 5V power supply and microcontroller.
6. intelligent liquid level controller according to claim 3, it is characterized in that: described operation detecting circuit comprises the current transformer that is arranged in the water pump, and the output of described current transformer is input in the described microcontroller after the rectification through diode and electric capacity successively.
7. according to each described intelligent liquid level controller in the claim 1～6, it is characterized in that: described sampled signal processing unit comprises rectification circuit, comparator circuit and the signal drive circuit that connects in turn.
8. according to each described intelligent liquid level controller in the claim 1～6, it is characterized in that: described water pump driving circuit comprises the contactor that is driven by triode, the base stage of described triode receives the control signal of being sent by described microcontroller, collector links to each other with described contactor coil, and the normally opened contact of described contactor is connected between power supply and the water pump.
9. according to each described intelligent liquid level controller in the claim 1～6, it is characterized in that: described water pump is two, drives by two-way water pump driving circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201432243U CN201066453Y (en) | 2007-04-13 | 2007-04-13 | Intelligent liquid level controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201432243U CN201066453Y (en) | 2007-04-13 | 2007-04-13 | Intelligent liquid level controller |
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| Publication Number | Publication Date |
|---|---|
| CN201066453Y true CN201066453Y (en) | 2008-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201432243U Expired - Fee Related CN201066453Y (en) | 2007-04-13 | 2007-04-13 | Intelligent liquid level controller |
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| CN (1) | CN201066453Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619044A (en) * | 2012-04-18 | 2012-08-01 | 江苏海大印染机械有限公司 | Liquid level control device of dyeing machines |
| CN104215296A (en) * | 2013-05-29 | 2014-12-17 | 广东美的暖通设备有限公司 | Liquid level detecting circuit, controller and water heater |
| CN105736047A (en) * | 2016-04-21 | 2016-07-06 | 安徽意力电缆有限公司 | Drainage system for cable tunnel |
| CN109351029A (en) * | 2018-12-12 | 2019-02-19 | 宁波上航测绘有限公司 | A kind of automatic suction water system of muddy water filtering |
| CN109351029B (en) * | 2018-12-12 | 2024-06-07 | 宁波上航测绘有限公司 | Automatic water sucking and draining system for muddy water filtration |
-
2007
- 2007-04-13 CN CNU2007201432243U patent/CN201066453Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619044A (en) * | 2012-04-18 | 2012-08-01 | 江苏海大印染机械有限公司 | Liquid level control device of dyeing machines |
| CN104215296A (en) * | 2013-05-29 | 2014-12-17 | 广东美的暖通设备有限公司 | Liquid level detecting circuit, controller and water heater |
| CN105736047A (en) * | 2016-04-21 | 2016-07-06 | 安徽意力电缆有限公司 | Drainage system for cable tunnel |
| CN109351029A (en) * | 2018-12-12 | 2019-02-19 | 宁波上航测绘有限公司 | A kind of automatic suction water system of muddy water filtering |
| CN109351029B (en) * | 2018-12-12 | 2024-06-07 | 宁波上航测绘有限公司 | Automatic water sucking and draining system for muddy water filtration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080528 |