CN102609010A - Power supply for remotely transmitting signals of liquid level controller by electric water pump - Google Patents
Power supply for remotely transmitting signals of liquid level controller by electric water pump Download PDFInfo
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- CN102609010A CN102609010A CN2012100841436A CN201210084143A CN102609010A CN 102609010 A CN102609010 A CN 102609010A CN 2012100841436 A CN2012100841436 A CN 2012100841436A CN 201210084143 A CN201210084143 A CN 201210084143A CN 102609010 A CN102609010 A CN 102609010A
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- power supply
- level controller
- fluid level
- water pump
- electric water
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Abstract
The invention discloses a power supply for remotely transmitting the signals of a liquid level controller by an electric water pump. The power supply comprises a rectifying filter circuit and a direct current power supply output by the rectifying filter circuit, wherein two ends of the positive electrode and the negative electrode of the direct current power supply are parallelly provided with a rectangular variable-frequency wave generating circuit and a power amplifying circuit, the output end of the rectangular variable-frequency wave generating circuit is connected with the signal input end of the power amplifying circuit, and the output end of the power amplifying circuit forms a low-frequency rectangular wave power supply used by a liquid level controller of the electric water pump. The power supply is provided with a changeover switch and/or a control collecting module, the direct current power supply or the low-frequency rectangular wave power supply is manually switched or switched through the built-in program of the setting control collecting module for connecting the liquid level controller, and in addition, the polarity of the direct current power supply can be switched. The power supply has the following advantages that liquid level signals can be remotely transmitted, the polarization, corrosion or scale formation speed of probes of the liquid level controller can also be obviously decelerated, the service life is prolonged, and meanwhile, the work reliability degree of the liquid level controller is improved.
Description
Technical field
The present invention relates to a kind of power supply that is used for electric water pump long-distance transmissions fluid level controller signal.
Background technology
The fluid level controller of electric water pump can be realized the unattended automatically working of electric water pump.At present; The fluid level controller that is used for electric water pump generally adopts interchange or direct current mode to transmit liquid level signal; Though simple and practical, there is following weak point in dual mode: adopt the industrial-frequency alternating current mode, the capacitive reactance of the distributed capacitance that forms between long cable is lower than the resistance of water; Therefore, the long-distance transmissions liquid level signal can't be realized.The direct current mode; Though the problem of transmission range has solved; But the probe of fluid level controller is equivalent to a fixing electrode in the electrolytic reaction pond, and the result of electrolytic reaction causes probe polarization, corrosion or the fouling of fluid level controller, causes the fluid level controller operational failure.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of can either the long-distance transmissions liquid level signal, can reduce the power supply that is used for electric water pump long-distance transmissions fluid level controller signal of the reliability of probe polarization, corrosion or fouling to fluid level controller, the work of raising fluid level controller again.
The object of the invention is achieved through following technical proposals: said power supply comprises the direct supply of current rectifying and wave filtering circuit and output thereof; The positive and negative electrode two ends of said direct supply are set up in parallel rectangle frequency conversion wave generation circuit, power amplification circuit; The output terminal of said rectangle frequency conversion wave generation circuit connects the signal input part of power amplification circuit, and the output terminal of power amplification circuit constitutes the low frequency square wave power supply of the fluid level controller use of electric water pump.
Said power configuration is provided with the control acquisition module, the control acquisition module is set is electrically connected with rectangle frequency conversion wave generation circuit and fluid level controller.
The output terminal of said waveform shaping circuit is provided with switch, connects fluid level controller through manual switching direct supply or low frequency square wave power supply.Perhaps, under the programmed control that the control acquisition module is set, connect fluid level controller, can switch the polarity of direct supply through plug-in automatic switchover direct supply or the low frequency square wave power supply that the control acquisition module is set.
The output terminal of said power amplification circuit connects waveform shaping circuit.
Said power amplification circuit adopts push-pull power amplifier circuit.
Compared with prior art; The present invention has the following advantages: simple and reasonable; Can the long-distance transmissions liquid level signal; Can obviously reduce the speed of probe polarization, corrosion or the fouling of fluid level controller again, improve the functional reliability degree of fluid level controller when prolonging its serviceable life significantly.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation block diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Referring to accompanying drawing, said power supply comprises the direct supply of current rectifying and wave filtering circuit and output thereof; The positive and negative electrode two ends of said direct supply are set up in parallel rectangle frequency conversion wave generation circuit, power amplification circuit; The output terminal of said rectangle frequency conversion wave generation circuit connects the signal input part of power amplification circuit, and the output terminal of power amplification circuit constitutes the low frequency square wave power supply of the fluid level controller use of electric water pump.
Said power configuration is provided with the control acquisition module, the control acquisition module is set is electrically connected with rectangle frequency conversion wave generation circuit and fluid level controller.
The output terminal of said waveform shaping circuit is provided with switch, connects fluid level controller through manual switching direct supply or low frequency square wave power supply.Perhaps, under the programmed control that the control acquisition module is set, connect fluid level controller, can switch the polarity of direct supply through plug-in automatic switchover direct supply or the low frequency square wave power supply that the control acquisition module is set.
The output terminal of said power amplification circuit connects waveform shaping circuit.
Said power amplification circuit adopts push-pull power amplifier circuit.
Current rectifying and wave filtering circuit: interchange is become direct current, adopt prior art.
Rectangle frequency conversion wave generation circuit: signal generator, adopt prior art.
Power amplification circuit: the signal to rectangle frequency conversion wave generation circuit carries out processing and amplifying, adopts prior art, like push-pull power amplifier circuit or other power amplification circuit.
Waveform shaping circuit: to the further shaping of power supply wave shape of power amplification circuit output.
Switch: the plug-in that the control acquisition module is set is controlled, and adopts prior art.
The control acquisition module is set: have CPU, storage power supply, specific program is installed, all adopt prior art.Function: the parameter of square wave is set, be provided with switch action parameter, the output parameter of waveform shaping circuit is set, obtain the signal of fluid level controller and pass to the CS of electric water pump.
Embodiment 1:
The civil power of the input end of current rectifying and wave filtering circuit for exchanging, its output terminal is a direct supply; Direct supply be rectangle frequency conversion wave generation circuit, power amplification circuit, waveform shaping circuit and be provided with control acquisition module working power is provided; The output terminal of said rectangle frequency conversion wave generation circuit connects the signal input part of power amplification circuit; The output terminal of power amplification circuit connects the input end of waveform shaping circuit, and the output terminal of waveform shaping circuit constitutes the low frequency square wave power supply of the fluid level controller use of electric water pump.Control acquisition module control rectangle frequency conversion wave generation circuit is set correct signal takes place, and detect the quality of the waveform signal of control waveform shaping circuit output terminal according to being provided with in advance.The low frequency square wave power supply that present embodiment output is continuous.
Embodiment 2:
On the basis of embodiment 1, configuration transitions switch, switch are provided with the control of control acquisition module.Be electrically connected with rectangle frequency conversion wave generation circuit and fluid level controller.Present embodiment replaces output DC source or low frequency square wave power supply, can also switch the polarity of direct supply, and the alternate intervals time is provided with the control of control acquisition module.
Power supply of the present invention has following outstanding characteristics:
1, can realize the long-distance transmissions liquid level signal.Pass through lot of test; We have found the method that solves long-distance transmissions liquid level signal problem: because ac frequency is low more; Its electric current through the electric capacity of same capacity is more little principle just, according to the equivalent capacity capacity of cable, and corresponding different frequencies; Can realize the transmission of maximum distance, and capacitive reactance is minimum.
2, the automatic cleaning function of liquid-level probe.
Because the cleanliness factor at water source differs, often cause on the probe attachment being arranged, accumulate over a long period and very easily cause the probe and the resistance at water source to increase, make control fails.Particularly in embodiment 2, the interleaved power of direct supply and low frequency square wave power supply, and the alternating polarity conversion of direct supply have been realized the automatic cleaning function of liquid-level probe well.Its principle of work: the alternating polarity conversion of direct supply; This is equivalent to the both positive and negative polarity to two pole plate Switching powers in the electrolytic cell; The result comes off the impurity on the original pole plate automatically, has automatic cleaning function, can prolong the serviceable life of the probe of fluid level controller simultaneously.For example: per 72 hours cleaning probes are set once, each cleaning time is 2 minutes, in this 2 fens clock times, supplies with direct supply for the probe of fluid level controller, whenever switches positive-negative polarity once at a distance from 5 seconds.The interval time that the interval time of cleaning probe, both positive and negative polarity switch, can realize through control acquisition module and switch sequencing are set.Can be non-isometric time interval the interval time that both positive and negative polarity switches.If: one is the A end points in two output terminals of the direct current of switch, and the anodal residence time that control acquisition module and switch sequencing realization A end points is set is 5 seconds, and the negative pole residence time is 3 seconds.
Claims (7)
1. power supply that is used for electric water pump long-distance transmissions fluid level controller signal, said power supply comprises the direct supply of current rectifying and wave filtering circuit and output thereof; It is characterized in that: the positive and negative electrode two ends of said direct supply are set up in parallel rectangle frequency conversion wave generation circuit, power amplification circuit; The output terminal of said rectangle frequency conversion wave generation circuit connects the signal input part of power amplification circuit, and the output terminal of power amplification circuit constitutes the low frequency square wave power supply of the fluid level controller use of electric water pump.
2. the power supply that is used for electric water pump long-distance transmissions fluid level controller signal according to claim 1; It is characterized in that: said power configuration is provided with the control acquisition module, the control acquisition module is set is electrically connected with rectangle frequency conversion wave generation circuit and fluid level controller.
3. the power supply that is used for electric water pump long-distance transmissions fluid level controller signal according to claim 1; It is characterized in that: the output terminal of said waveform shaping circuit is provided with switch; Connect fluid level controller through manual switching direct supply or low frequency square wave power supply, can switch the polarity of direct supply.
4. the power supply that is used for electric water pump long-distance transmissions fluid level controller signal according to claim 2; It is characterized in that: the output terminal of said waveform shaping circuit is provided with switch; Under the programmed control that the control acquisition module is set; Plug-in automatic switchover direct supply or low frequency square wave power supply through the control acquisition module is set connect fluid level controller, can switch the polarity of direct supply.
5. according to the optional described power supply that is used for electric water pump long-distance transmissions fluid level controller signal of claim 1-4, it is characterized in that: the output terminal of said power amplification circuit connects waveform shaping circuit.
6. according to the optional described power supply that is used for electric water pump long-distance transmissions fluid level controller signal of claim 1-4, it is characterized in that: said power amplification circuit adopts push-pull power amplifier circuit.
7. the power supply that is used for electric water pump long-distance transmissions fluid level controller signal according to claim 5 is characterized in that: said power amplification circuit adopts push-pull power amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100841436A CN102609010A (en) | 2012-03-28 | 2012-03-28 | Power supply for remotely transmitting signals of liquid level controller by electric water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100841436A CN102609010A (en) | 2012-03-28 | 2012-03-28 | Power supply for remotely transmitting signals of liquid level controller by electric water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102609010A true CN102609010A (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100841436A Pending CN102609010A (en) | 2012-03-28 | 2012-03-28 | Power supply for remotely transmitting signals of liquid level controller by electric water pump |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207754U (en) * | 1986-09-28 | 1987-09-30 | 浙江省丽水地区计算机应用研究室 | Liquid level transducer of the condenser liquid-level gauge |
| CN87206858U (en) * | 1987-04-25 | 1988-03-23 | 尢大千 | Water level controller with high impedance and AC electrode |
| CN2217814Y (en) * | 1994-10-28 | 1996-01-17 | 黎桂兴 | Electric-contact level-controlling alarm |
| CN1339728A (en) * | 2001-07-08 | 2002-03-13 | 黄武源 | Electrode type digital liquid level controlling device |
| CN1379737A (en) * | 1999-10-14 | 2002-11-13 | 文在德 | Apparatus for producing high-concentration electrolytic water |
| CN202488365U (en) * | 2012-03-28 | 2012-10-10 | 彭勇 | Power supply suitable for remotely transmitting liquid level signal to water pump control device |
-
2012
- 2012-03-28 CN CN2012100841436A patent/CN102609010A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86207754U (en) * | 1986-09-28 | 1987-09-30 | 浙江省丽水地区计算机应用研究室 | Liquid level transducer of the condenser liquid-level gauge |
| CN87206858U (en) * | 1987-04-25 | 1988-03-23 | 尢大千 | Water level controller with high impedance and AC electrode |
| CN2217814Y (en) * | 1994-10-28 | 1996-01-17 | 黎桂兴 | Electric-contact level-controlling alarm |
| CN1379737A (en) * | 1999-10-14 | 2002-11-13 | 文在德 | Apparatus for producing high-concentration electrolytic water |
| CN1339728A (en) * | 2001-07-08 | 2002-03-13 | 黄武源 | Electrode type digital liquid level controlling device |
| CN202488365U (en) * | 2012-03-28 | 2012-10-10 | 彭勇 | Power supply suitable for remotely transmitting liquid level signal to water pump control device |
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Application publication date: 20120725 |