CN209028032U - A kind of high reliability water-leakage detecting system - Google Patents
A kind of high reliability water-leakage detecting system Download PDFInfo
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- CN209028032U CN209028032U CN201821640700.7U CN201821640700U CN209028032U CN 209028032 U CN209028032 U CN 209028032U CN 201821640700 U CN201821640700 U CN 201821640700U CN 209028032 U CN209028032 U CN 209028032U
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Abstract
The utility model provides a kind of high reliability water-leakage detecting system, including power supply unit, leak water detdction unit and optical fiber output unit.The power supply unit includes two groups, every group of power supply unit includes Switching Power Supply and power state detection circuit, the leak water detdction unit includes three groups, every group includes leak water detdction probe and impedance detection circuit, the optical fiber output unit includes three groups, every group of fiber optic emitter for including frequency adjustment chip and being connected with its output port；Frequency adjusts chip according to the power supply power supply voltage signal and water leakage that detect, exports different frequency signals, drives fiber optic emitter to send different alarm signals to external with different frequencies.The features such as dual power supply, double switch power redundancy, sensor detection data triplex level redundancy.Meanwhile the water-leakage detecting system, it can be reported to control system by three groups of optical fiber, facilitate control system to receive data and judged.
Description
Technical field
The utility model relates to power electronics field, in particular to a kind of high reliability water-leakage detecting system.
Background technique
With the development of transmission & distribution power technology, high-power electric and electronic conversion equipment is increasing, high-power conversion equipment one
As require cooperation water cooling equipment use.In entire water-cooling system, there can be multiple joint locations, there are the risks of leak.Greatly
Power power electronics conversion equipment needs to detect the water leakage situation of water-cooling system during long-play, and real
When be reported to control system.
(1) existing leak water detdction generallys use single supply, the mode of single leak water detdction probe is realized.When power supply damages
Bad when, will cause allomeric function failure；When leak water detdction probe is damaged, water leakage detecting function failure or wrong report will cause
Water leakage fault.
(2) existing water leakage alarm signal transmission be usually with the connection transmission mode of normal signal line or connection to
Outer transmission, signal transmission distance is short, is easy broken string, and common on-off model and analog signals transmission is easy by dry
It disturbs.
In above scheme, the credibility of leak water detdction data and the reliability of water-leakage detecting system are all to be improved.
Summary of the invention
In order to solve the deficiency in background technique, the utility model provides a kind of high reliability water-leakage detecting system, double electricity
The features such as source power supply, double switch power redundancy, sensor detection data triplex level redundancy.Meanwhile the water-leakage detecting system, pass through light
Fibre-Frequency Patterns are reported to control system, and signal reliability is high, facilitate control system to receive data and are judged.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of high reliability water-leakage detecting system, including power supply unit, leak water detdction unit and optical fiber output unit.
The power supply unit includes two groups, and every group of power supply unit includes Switching Power Supply and power state detection circuit,
Power state detection circuit in parallel is connected to optical fiber output in the output end of Switching Power Supply, supply voltage detection signal output end
Unit；Two groups of switched power outputs are in parallel, the DC power supply VCC of common output system.
The leak water detdction unit includes three groups, and every group includes leak water detdction probe and impedance detection circuit, impedance
Detection circuit input terminal connects leak water detdction probe, and the water leakage of output end output is connected to optical fiber output unit.
The optical fiber output unit includes three groups, and every group includes that frequency adjusts chip and is connected with its output port
Fiber optic emitter；The input terminal of each frequency adjustment chip receives the two-way power supply of two groups of power state detection circuit outputs
Voltage detection signal detects the state of duplex feeding power supply, meanwhile, the input terminal of each frequency adjustment chip also receives one respectively
The water leakage of group leak water detdction unit；Frequency adjusts chip according to the power supply power supply voltage signal and water leakage detected,
Different frequency signals is exported, drives fiber optic emitter to send different alarm signals to external with different frequencies.
The power state detection circuit includes and triode and the current-limiting resistance connecting with its base stage, threshold value pressure stabilizing two
Pole pipe, the voltage of the base stage detection switch power supply of triode, collector output supply voltage detection signal are sent to frequency adjustment
Chip.
The impedance detection circuit is the voltage comparator circuit being made of comparator.
The frequency adjustment chip is that CPLD chip, fpga chip, dsp chip or singlechip chip are one such.
The detection probe is made of two metal needles, is fixed on catch basin.
Compared with prior art, the utility model has the beneficial effects that
1, dual power supply, double switch power redundancy, any power-fail do not influence system operation, high reliablity；
2, using three groups of detection probes, impedance detection circuit, frequency adjustment chip, fiber optic emitter and optical fiber, have three
Two function is taken, it is with a high credibility；
3, it is reported to control system using optical fiber-Frequency Patterns, signal transmission distance is long, failure rate is low, high reliablity.
Detailed description of the invention
Fig. 1 is a kind of high reliability water-leakage detecting system topological structure block diagram of the utility model；
Fig. 2 is a kind of high reliability water-leakage detecting system topology diagram of the utility model；
Fig. 3 is the power state detection circuit diagram of the utility model；
Fig. 4 is the impedance detection circuit figure of the utility model.
In figure, 1- current-limiting resistance 2- threshold value zener diode 3- suppression resistor 4- triode 5- filter capacitor 6-
1 11- of discharge resistance 7- reference voltage high-value resistor 8- reference voltage low level resistance 9- comparator 10- series diode string
Union II pole pipe 2.
Specific embodiment
Specific embodiment provided by the utility model is described in detail below in conjunction with attached drawing.
As shown in Figs. 1-2, a kind of high reliability water-leakage detecting system, including power supply unit, leak water detdction unit and optical fiber
Output unit.
The power supply unit includes two groups, and every group of power supply unit includes Switching Power Supply and power state detection circuit,
Power state detection circuit in parallel is connected to optical fiber output in the output end of Switching Power Supply, supply voltage detection signal output end
Unit；Two groups of switched power outputs are in parallel after connecting respectively with diode (10) and diode (11), common output system
DC power supply VCC provides DC power supply for leak water detdction unit and optical fiber output unit.
The leak water detdction unit includes three groups, and every group includes leak water detdction probe and impedance detection circuit, impedance
Detection circuit input terminal connects leak water detdction probe, and the water leakage of output end output is connected to optical fiber output unit.
The optical fiber output unit includes three groups, and every group includes that frequency adjusts chip and is connected with its output port
Fiber optic emitter；The input terminal of each frequency adjustment chip receives the two-way power supply of two groups of power state detection circuit outputs
Voltage detection signal detects the state of duplex feeding power supply, meanwhile, the input terminal of each frequency adjustment chip also receives one respectively
The water leakage of group leak water detdction unit；Frequency adjusts chip according to the power supply power supply voltage signal and water leakage detected,
Different frequency signals is exported, drives fiber optic emitter to send different alarm signals to external with different frequencies.
As shown in figure 3, the power state detection circuit includes the current limliting electricity connected with triode (4) He Yuqi base stage
Hinder (1), threshold value zener diode (2), the voltage of the base stage detection switch power supply of triode (4), collector output supply voltage
Detection signal is sent to frequency adjustment chip.When any hair in power supply 1, power supply 2, Switching Power Supply 1, Switching Power Supply 2
After raw failure, power state detection circuit loses energy supply, sets when the output voltage of Switching Power Supply 1 or Switching Power Supply 2 is lower than
When definite value, current-limiting resistance (1), threshold value zener diode (2), suppression resistor (3) and triode (4) base emitter-base bandgap grading do not have
The collection emitter-base bandgap grading of electric current mistake, triode (4) is converted to off state by state, which reports to three simultaneously
Frequency adjusts chip, and after frequency adjustment chip receives the state, corresponding change, driving optical fiber hair occur for the frequency of output signal
The optical signal that emitter issues same frequency sentences power detecting after external controller receives normal frequency optical signal by optical fiber
Abnormal state, when there is the state that reports of two groups of optical fiber and being same power supply status exception, then judge corresponding power supply or
Switching Power Supply breaks down.
The detection probe is made of two metal needles, is fixed on the fixation position of catch basin, when the water level of catch basin reaches
When to threshold value, detection probe can be contacted with water.
As shown in figure 4, the impedance detection circuit is the voltage comparator circuit being made of comparator (9).Comparator (9)
It can choose integrated-type amplifier/comparator, such as: CA3240.After water level reaches threshold value in catch basin, detection probe position
Impedance changes, and charges to filter capacitor (5), and the discharge resistance (6) in figure is used to discharge for filter capacitor (5), works as filtering
The voltage of capacitor, which rises to over, obtains benchmark electricity by reference voltage high-value resistor (7) and reference voltage low level resistance (8) partial pressure
After pressure, comparator (9) output state flip, output end exports leak water detdction signal to frequency adjustment chip.
The frequency adjustment chip is that CPLD chip, fpga chip, dsp chip or singlechip chip are one such.
When power supply status and normal leak water detdction state, frequency adjusts the square-wave signal of chip output normal frequency, drives
Dynamic fiber optic emitter issues the optical signal of same frequency, when detecting power failure signal or water leakage, the frequency of output signal
Corresponding change occurs for rate, is issued with different frequency driving fiber optic emitters and sends alarm optical signal.
Above embodiments are implemented under premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but the protection scope of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (5)
1. a kind of high reliability water-leakage detecting system, which is characterized in that including power supply unit, leak water detdction unit and optical fiber output
Unit；
The power supply unit includes two groups, and every group of power supply unit includes Switching Power Supply and power state detection circuit, power supply
State detection circuit is parallel to the output end of Switching Power Supply, and the output end of power state detection circuit is connected to optical fiber output list
Member；Two groups of switched power outputs are in parallel, the DC power supply VCC of common output system；
The leak water detdction unit includes three groups, and every group includes leak water detdction probe and impedance detection circuit, impedance detection
Circuit input end connects leak water detdction probe, and the water leakage of output end output is connected to optical fiber output unit；
The optical fiber output unit includes three groups, every group of light for including frequency adjustment chip and being connected with its output port
Fine transmitter；The input terminal of each frequency adjustment chip receives the two-way supply voltage of two groups of power state detection circuit outputs
Signal is detected, the state of duplex feeding power supply is detected, meanwhile, the input terminal of each frequency adjustment chip also receives one group of leakage respectively
The water leakage of water detection unit；Frequency adjusts chip according to the power supply power supply voltage signal and water leakage detected, output
Different frequency signals drives fiber optic emitter to send different alarm signals to external with different frequencies.
2. a kind of high reliability water-leakage detecting system according to claim 1, which is characterized in that the power supply status inspection
Slowdown monitoring circuit includes the current-limiting resistance (1) connected with triode (4) He Yuqi base stage, threshold value zener diode (2), triode (4)
Base stage detection switch power supply voltage, collector output supply voltage detect signal, be sent to frequency adjustment chip.
3. a kind of high reliability water-leakage detecting system according to claim 1, which is characterized in that the impedance detection electricity
Road is the voltage comparator circuit being made of comparator (9).
4. a kind of high reliability water-leakage detecting system according to claim 1, which is characterized in that the frequency adjusts core
Piece is that CPLD chip, fpga chip, dsp chip or singlechip chip are one such.
5. a kind of high reliability water-leakage detecting system according to claim 1, which is characterized in that the detection probe is by two
A metal needle composition, is fixed on catch basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640700.7U CN209028032U (en) | 2018-10-10 | 2018-10-10 | A kind of high reliability water-leakage detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821640700.7U CN209028032U (en) | 2018-10-10 | 2018-10-10 | A kind of high reliability water-leakage detecting system |
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| Publication Number | Publication Date |
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| CN209028032U true CN209028032U (en) | 2019-06-25 |
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ID=66905969
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187650A (en) * | 2018-10-10 | 2019-01-11 | 北京荣信慧科科技有限公司 | A kind of high reliability water-leakage detecting system |
-
2018
- 2018-10-10 CN CN201821640700.7U patent/CN209028032U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187650A (en) * | 2018-10-10 | 2019-01-11 | 北京荣信慧科科技有限公司 | A kind of high reliability water-leakage detecting system |
| CN109187650B (en) * | 2018-10-10 | 2023-12-26 | 北京荣信慧科科技有限公司 | High-reliability water leakage detection system |
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