CN107727199A - Waste liquid liquid level detection system and detection method with fault self-checking function - Google Patents
Waste liquid liquid level detection system and detection method with fault self-checking function Download PDFInfo
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- CN107727199A CN107727199A CN201711073037.7A CN201711073037A CN107727199A CN 107727199 A CN107727199 A CN 107727199A CN 201711073037 A CN201711073037 A CN 201711073037A CN 107727199 A CN107727199 A CN 107727199A
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- 239000007788 liquid Substances 0.000 title claims abstract description 308
- 238000001514 detection method Methods 0.000 title claims abstract description 82
- 239000002699 waste material Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007689 inspection Methods 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 18
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 19
- 238000012360 testing method Methods 0.000 description 10
- 239000010806 kitchen waste Substances 0.000 description 9
- 239000004519 grease Substances 0.000 description 5
- 239000010813 municipal solid waste Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 235000013305 food Nutrition 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 244000089698 Zanthoxylum simulans Species 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000008162 cooking oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 235000019737 Animal fat Nutrition 0.000 description 1
- 235000002566 Capsicum Nutrition 0.000 description 1
- 240000004160 Capsicum annuum Species 0.000 description 1
- 235000008534 Capsicum annuum var annuum Nutrition 0.000 description 1
- 240000008574 Capsicum frutescens Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000010828 animal waste Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000001511 capsicum annuum Substances 0.000 description 1
- 239000001390 capsicum minimum Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/76—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats characterised by the construction of the float
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
Abstract
The present invention relates to a kind of waste liquid liquid level detection system and detection method with fault self-checking function, belong to Technology of Level Detection field.Waste liquid liquid level detection system includes level sensing module and liquid level gauge, and level sensing module is connected and communicated with liquid level gauge, and liquid level gauge includes two or more, and each liquid level gauge detects the hydroful state in liquid reserve tank body respectively.Liquid-level detecting method includes liquid level and carries out monitoring and liquid level detection device fault self-checking in real time.The waste liquid liquid level detection system and method for the present invention, by setting multiple liquid level gauges to detect the hydroful state of liquid storage casing respectively, it can not only reduce level sensing failure, moreover it is possible to which liquid level fault self-checking is carried out to itself liquid level detection system, the maintenance period of extension device, reduce cost of equipment maintenance.
Description
Technical field
The present invention relates to a kind of waste liquid liquid level detection system and waste liquid liquid-level detecting method with fault self-checking function, belong to liquid
Position detection technique field.
Background technology
Kitchen waste oil is an important recyclable resource in kitchen garbage.Kitchen waste oil can be used as producing biological bavin
The raw material of the chemical products such as oil, soap, liquid detergent, cosmetics.In kitchen garbage processing procedure, recovery kitchen waste oil is usually first
Kitchen garbage is subjected to separation of solid and liquid, kitchen solid slag and food and drink waste liquid are obtained after separation, food and drink waste liquid is then subjected to solid-liquid point
From recovery grease therein.Whether the waste collection in separation of solid and liquid, or the Grease Collection in water-oil separating, are used
Liquid level gauge carries out level monitoring and the detection of liquid.But due to containing substantial amounts of moisture in food and drink waste liquid and waste cooking oil, consolidating
State little particle organic suspended matter, and it has the characteristics of high salt, component Dynamic Uncertain, causes to give up in food and drink in liquid level gauge
Liquid, the level monitoring of waste oil and very easy damage during the use of detection, or because solid grease is set in liquid level gauge
Upper generation level sensing failure.Equipment fault takes place frequently, cost of equipment maintenance is high.Such as, Authorization Notice No. is in 206556723U
State's utility model patent, discloses a kind of oil tank level detection device, and the detection device sends sound wave to reception by calculating
The height of oil level is measured to the time between sound wave.Although this detection device detection liquid level is accurate, due to waste liquid
With contain moisture in kitchen waste oil, vapor, which can overflow liquid level corrosion ultrasonic level gage, causes ultrasonic level gage failure, enters
And cause liquid level detection system failure, so oil storage tank is collected in the front end that this detection device is not suitable for kitchen waste oil.For another example,
Authorization Notice No. is that 206450291U Chinese utility model patent discloses a kind of capacitance type sensor liquid level detection device, should
Device pinpoints using whether liquid fills the caused capacitive reading change between reference electrode unit and detecting electrode to realize
Level sensing.But due to containing substantial amounts of solid suspension rubbish, the capacitance type sensor liquid level detection device in kitchen garbage
Apply to be detected in waste liquid and expense and cause detection failure on the outside of the capacitance detecting easily deposited, it is necessary to after cleaning maintenance
It can be continuing with, easily cause equipment fault, increase maintenance cost.
The content of the invention
It is an object of the invention to overcome kitchen waste liquid liquid level detection device Frequent Troubles in the presence of prior art, set
The high above-mentioned deficiency of standby maintenance cost, there is provided a kind of waste liquid liquid level detection system with fault self-checking function, the waste liquid liquid level
Detecting system provides physical unit support for the level sensing self-test of liquid level detection system, coordinates corresponding control module, can
To carry out liquid level fault self-checking, and the maintenance period of energy extension device to itself liquid level detection system, cost of equipment maintenance is reduced.
Further, there is provided it is a kind of with based on above-mentioned liquid level detection system the waste liquid level sensing side with fault self-checking function
Method.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
Waste liquid liquid level detection system with fault self-checking function, including level sensing module and liquid level gauge, level sensing module
Connect and communicate with liquid level gauge, the liquid level gauge includes two or more, and each liquid level gauge detects in liquid reserve tank body respectively
Hydroful state.The liquid level detection system of said structure, each liquid level gauge detect hydroful signal, and the liquid that itself is detected respectively
Full signal sends level sensing module to, and level sensing module receives the level sensing signal of liquid level gauge, and by hydroful signal
Offer the management system of more upper level.As long as there is one of liquid level gauge to detect hydroful signal, that is, it is determined as liquid reserve tank hydroful.
The waste liquid liquid level detection system of the present invention, by setting multiple liquid level gauges worked independently from each other respectively while detecting liquid storage casing
Interior hydroful state, reports hydroful state respectively, avoid single liquid level gauge failure or damage caused by level sensing failure, enter
And reduce the risk for causing sewer blockage that waste liquid overflows contaminated equipment and waste cooking oil flows into sewer.Further,
The liquid level detection system of the waste liquid of the present invention, by setting multiple liquid level gauges worked independently from each other to detect oil storage casing respectively
Hydroful state, the fault self-checking also resided in as liquid level detection system provide physical equipment support, coordinate corresponding control logic
The fault self-checking of level sensing module can be completed：Detect the time of hydroful signal as initial time using level sensing module
t0, in t0To t0In+T time, if the hydroful signal number a that level sensing module detects is less than the number n of liquid level gauge,
Assert that part liquid level gauge breaks down, if liquid level gauge, which breaks down, exceeds certain times N, liquid level detection system then carries out failure
Report, wherein T is that the self-test set according to actual conditions is super real-time long.The liquid level detection system of the present invention, passes through setting
Multiple liquid level gauges detect the hydroful state of oil storage casing respectively, not only substantially reduce and are given up caused by liquid level detection system failure
Hydrorrhea goes out risk, can also provide possibility for the fault self-checking of liquid level detection system, can realize liquid level detection system failure
In time report and alerted, greatly reduce liquid level detection system maintenance manpower consumption, reduce cost of equipment maintenance.
As the preferred scheme of the present invention, the number of the liquid level gauge is two.Two liquid level gauges compare a liquid level gauge
Level sensing failure can be substantially reduced, compared to 3 or more than 3 liquid level gauges, except liquid level detection system can be reduced
Outside cost, moreover it is possible to simplify the self-test logic of level sensing, liquid level self-test is easier to realize, and maintenance cost is low.
As the preferred scheme of the present invention, the liquid level is calculated as floating-ball level switch.Floating-ball level switch is compared to other
The liquid level gauge of classification, price is cheaper and be less likely to be damaged in use, service life it is longer.
As the preferred scheme of the present invention, the liquid level is calculated as duck-beak type floating-ball level switch.Duck-beak type Floating Ball Liquid Level is opened
Close floating-ball level switch float and the stator compared to other classifications is flexibly connected that position contact area is smaller, and float is with liquid level
Influenceed in the process of activity by the environment of the liquid detected smaller.Such as, in waste liquid containing the face such as substantial amounts of Chinese prickly ash, capsicum,
Skin or graininess suspend, using routine the easy appearance activity of floating-ball level switch float by Chinese prickly ash, paprika by card master's
And the phenomenon of level sensing is influenceed, and then cause level sensing failure, and duck-beak type floating-ball level switch is used as liquid level gauge,
This probability just greatly reduces；Further, when kitchen waste liquid is the relatively low animal fat of freezing point, when there is part solid-state
When grease is gathered in the connecting portion of liquid level gauge float and stator, due to contact of the float with stator of conventional floating-ball level switch
Area is big, and this failure easily occurs and is difficult to eliminate, and can then be greatly reduced using duck-beak type floating-ball level switch this
The probability that failure occurs, liquid level detection system work are more stable more accurate.
As the preferred scheme of the present invention, the vertical height difference of two liquid level gauge installations is less than or equal to 1cm.Two liquid
The difference in height of position meter, which is less than 1cm, can reduce the phenomenon generation for the wrong report of liquid level fault self-checking occur or frequently reporting, as liquid level is firm
Reach the position between two liquid level gauge vertical heights well to stop feeding, one of level sensing to hydroful signal, another
Liquid level gauge can not detect hydroful signal always, and liquid level detection device sends level sensing fault warning, but repairs liquid level inspection
Examining system is to find that liquid level gauge does not occur detection failure.Preferably, during installation, two liquid level gauges are located at same level height
Degree.
Waste liquid liquid-level detecting method with fault self-checking function, comprises the following steps：
（1）Liquid level monitors in real time：N separate liquid level gauges monitor the hydroful state in liquid reserve tank body, n >=2 in real time respectively；
When having detected hydroful signal, hydroful signal is reported, subsequently into step（2）；
（2）Level sensing fault self-checking：Note detects that the time of hydroful is initial time t0, in t0To t0In+T time, note inspection
The hydroful signal number measured is a；If a=n, hydroful signal enters step after eliminating（1）；If a ＜ n, into step（3）；
（3）Level sensing fault warning：Level sensing fault warning is carried out, after pending fault eliminates, into step（1）.
Above-mentioned waste liquid liquid-level detecting method, step（1）In, multiple liquid level gauges worked independently from each other, respectively to liquid storage system
The hydroful state of system is detected, as long as one of liquid level gauge detects that hydroful state reports hydroful state, is solved
High salt, high-moisture, uphang liquid level gauge in the waste liquids of floating particles and be easily damaged, cause liquid level detection system Frequent Troubles and then can not
The phenomenon of normal work occurs, and avoids the waste liquid flooding problems caused by hydroful detection failure caused by liquid level gauge damages, prolongs
The maintenance period of liquid level detection system is grown.Step（2）In, under hydroful state, liquid level detection system carries out liquid level failure certainly
Inspection, the liquid level gauge n that can detect hydroful state by comparing the hydroful signal number a in time-out time T and actual design
Relation, determines whether the liquid level gauge in liquid level detection system damages, nothing（That is a=n）Then enter step（1）Re-start liquid level inspection
Survey, have（That is a ＜ n）Then enter step（3）Fault warning is carried out, after Failure elimination, into step（1）Re-start liquid level inspection
Survey, complete the fault self-checking process of liquid level detection system.The waste liquid liquid-level detecting method of the present invention, liquid level inspection can not only be reduced
Survey the probability of happening of failure, moreover it is possible to liquid level fault self-checking is carried out, excludes liquid level potential faults caused by liquid level gauge damage, it is applicable
In the high salt of fragile liquid level gauge, high-moisture, higher suspension granule content, high complex environment etc. similar waste liquid, waste oil.
As the preferred scheme of the present invention, in step（1）Before, establish and initialize level sensing failure logging times N,
Remember N=0；In step（2）In, as a=n, N=0 is changed, then enters step after the elimination of hydroful signal（1）；As a ＜ n, repair
Change N=N+1；If N ＜ Nmax, then step is entered after the elimination of hydroful signal（1）；If N >=Nmax, then into step（3）；In step
（3）In, after pending fault eliminates, N=0 is changed, subsequently into step（1）.Above-mentioned waste liquid liquid-level detecting method, detected by establishing
The failure logging times N of system, often there is a level sensing failure（A ＜ n）, remember N=N+1；Allowing detection failure occur most
Big times NmaxIn the range of, number of stoppages record modification is only carried out, without level sensing fault warning；When detection failure logging
Number meets or exceeds NmaxWhen, just carry out level sensing fault warning, wherein NmaxMobile state can be entered according to actual conditions to set
It is fixed, such as Nmax=5, Nmax=10 etc.；Also, in the failure logging times N of settingmaxIt is interior, if detecting all liquid level gauges again
Without detection failure, then initialization failure record times N, remembers that N=0, N are counted again.The kitchen waste liquid level sensing side of the present invention
Method, by establishing the interval time frequency of failure logging times N and number of pass times N control detecting system fault warnings, it can keep away
Exempt from the phenomenon that the liquid level detection system self test failure caused by temporary liquid level failure is reported by mistake or frequently reported to occur, and then extend
In the plant maintenance cycle, reduce cost of equipment maintenance.Special instruction, this liquid level detection system is laying scope is wide, level sensing
In the high equipment of fault rate, advantage is especially prominent.Temporary liquid level failure includes and is not limited to following phenomenon：（1）Liquid level gauge is temporary
When property failure,（2）Liquid level gauge because the suspension in waste liquid blocks, block it is main etc. can not send hydroful signal, should but after liquid level reduces
Phenomenon eliminates, and liquid level gauge recovers normal operating conditions again,（3）Because equipment installation injustice causes liquid level gauge in the vertical direction to exist
Larger difference in height, hydroful position are located just at the height between liquid level gauge, and then part liquid level gauge liquid occur and can not detect liquid
Full signal, after feed liquor again, the phenomenon eliminates.
As the preferred scheme of the present invention, in step（2）In, T is big with N change and gradually extends.T with N increase and by
Gradually extend, the phenomenon hair for causing the probability of liquid level detection system fault misdescription to raise or frequently report because T is too short can be avoided
It is raw, cause the break down phenomenon that can not report and then cause waste liquid to overflow of liquid level detection system to occur because T is oversize, not only carry
Accuracy, the reliability of high level detecting system fault self-checking, moreover it is possible to improve self-test efficiency.Preferably, T with N variation relation
For：T=T+NT.
As the preferred scheme of the present invention, the number of n=2, i.e. liquid level gauge is 2.The number of liquid level gauge is 2, both can guarantee that liquid
The accuracy of position detection, moreover it is possible to reduce the cost used, simplify control program, the maintenance cost of detection device is lower.
It should be appreciated that the waste liquid in the present invention refers to high salt, Gao Shui, high content solid-state fine grained suspension or eutectic
Point（Such as animal waste grease）Complicated Deng liquid itself environment, liquid level gauge is easily damaged in this use environment, and component has
High complexity, probabilistic mixing liquid, and should not be limited to kitchen waste liquid.
Compared with prior art, beneficial effects of the present invention：
1st, waste liquid liquid level detection system of the invention, by setting multiple liquid level gauges to detect the hydroful state of oil storage casing respectively,
Not only substantially reduce the waste liquid caused by liquid level detection system failure and overflow risk, can also be the failure of liquid level detection system
Self-test provides possibility, can realize reporting and alerted in time for liquid level detection system failure, greatly reduces intelligence and puts
The manpower consumption that EFM Electronic Fuel Management is safeguarded, reduces cost of equipment maintenance.
2nd, liquid level gauge selects duck-beak type floating-ball level switch, compared to the more difficult damage of other kinds of liquid level gauge, phase
It is flexibly connected that position contact area is smaller, and float is with liquid level activity than floating-ball level switch float and the stator in other classifications
During influenceed by the environment of the liquid detected it is smaller.
3rd, the difference in height of two liquid level gauges, which is less than 1cm and can reduced, there is the wrong report of liquid level fault self-checking or what is frequently reported show
As occurring.
4th, waste liquid liquid-level detecting method of the invention, by setting multiple liquid level gauges to detect the hydroful shape of oil storage casing respectively
State, the probability of happening of level sensing failure can not only be reduced, moreover it is possible to carry out liquid level fault self-checking, excluding liquid level gauge damage causes
Liquid level potential faults, be applicable to the high salt of fragile liquid level gauge, high-moisture, uphang floating particles, high complex environment etc. class
Like waste liquid, waste oil.
5th, waste liquid liquid-level detecting method of the invention, by establishing failure logging times N and number of pass times N control detections system
The interval time frequency of system fault warning, can avoid the liquid level detection system self test failure caused by temporary liquid level failure from missing
Report or the phenomenon frequently reported occur, and then extension device maintenance period, reduce cost of equipment maintenance.
6th, waste liquid liquid-level detecting method of the invention, T gradually extend with N increase, liquid level detection system fault self-checking
Accuracy is higher, better reliability, and self-test efficiency high.
Brief description of the drawings：
Fig. 1 is the system installation structure figure of embodiment 1；
Fig. 2 is the structural representation of another floating-ball level switch；
Fig. 3 is the system construction drawing of embodiment 1；
Fig. 4 is the method flow diagram of embodiment 2.
Marked in figure：
1- liquid storage casings, 2- liquid level gauges one, 3- liquid level gauges two, 4- stators, 5- floats, the Data processing of 6- floating-ball level switch
The heart, 7- connections.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
As shown in Figure 1, Figure 3, the waste liquid liquid level detection system with fault self-checking function of embodiment 1, including CPU control moulds
Block, fault warning system and liquid level detection system, liquid level detection system include level sensing module, liquid level gauge 1 and liquid level gauge
23, liquid level gauge 1 and liquid level gauge 23 are connected and communicated with level sensing module respectively.Level sensing module and CPU control moulds
Block is connected, and CPU control modules are connected with fault warning system.Liquid level gauge 1 and liquid level gauge 23 are that duck-beak type Floating Ball Liquid Level is opened
Close.Liquid level gauge 1 and liquid level gauge 23 are installed on the same level height in liquid storage casing 1.As shown in figure 1, duck-beak type ball float liquid
Bit switch includes stator 4 and float 5, and stator 4 is fixed on the madial wall of liquid storage casing 1, and float 5 is articulated with stator 4.Work as liquid level
When reaching the detection range of liquid level gauge 1 and liquid level gauge 23, float 5 floats with liquid, and with the preceding end in contact of stator 4, produce
Liquid level induced signal, caused induced signal are automatically delivered to level sensing module.When level sensing module itself detects liquid
During the meter detection failure of position, level sensing module sends liquid level gauge fault warning to fault warning system by CPU control modules and ordered
Order, fault warning system send fault alarm signal.The level sensing fault self-checking flow such as embodiment 2 of liquid level detection system.
Fig. 1 is the system installation structure figure of embodiment 1；Fig. 3 is the system construction drawing of embodiment 1.
Fig. 2 is the structural representation of another floating-ball level switch provided by the invention, and wherein stator 4 is vertical length
Bar, float 5 are socketed on stator 4, and float 5 can slide up and down along stator 4.The data processing centre of floating-ball level switch 6
At the top of the upper end of stator 4, the data processing centre 6 of floating-ball level switch can read height of the float 5 on stator 4, enter
And identify the liquid level in liquid storage casing 1.When using floating-ball level switch described in Fig. 2, stator 4 it is vertical be installed on storage
In liquid case body 1, float 5 floats on the upper surface of liquid, when the liquid level in liquid storage casing 1 changes, float 5 with liquid level liter
High moves up.The data processing centre 6 of floating-ball level switch calculates liquid level according to climb of the float 5 on stator 4
Height, and level sensing module to is sent the data of liquid level by connection 7.Two Floating Ball Liquid Levels as shown in Figure 2 are opened
When pass is installed in oil storage casing 1, the float 5 of two floating-ball level switch is floated on liquid level, is always located in same level height.
Two floating-ball level switch can replace liquid level gauge 1 and liquid level gauge 23 in Fig. 1, for monitoring respectively in oil storage casing
Liquid level.
Embodiment 2
The waste liquid liquid-level detecting method with fault self-checking function of embodiment 2 is based on embodiment 1 with fault self-checking function
Waste liquid liquid level detection system.Such as Fig. 4, the waste liquid liquid-level detecting method with fault self-checking function of embodiment 2, including it is following
Step：
First, in level sensing module, the initialization of level sensing failure logging：
（1）Establish and initialize level sensing failure logging times N, remember N=0；Subsequently into step（2）,
2nd, liquid level detection system is monitored in real time to the liquid level in liquid reserve tank body：
（2）Liquid level monitors in real time：Liquid level gauge one and liquid level gauge two monitor the hydroful state in liquid reserve tank body in real time respectively；Work as liquid level
When meter one and/or liquid level gauge two have detected hydroful signal, liquid level gauge one and/or liquid level gauge two pass the hydroful signal detected
Level sensing module is given, level sensing module receives the hydroful signal of liquid level gauge and controls the hydroful signal reporting to CPU
System, system control cpu receives and stores the hydroful signal, subsequently into step（3）；
3rd, liquid level detection system carries out fault self-checking：
（3）Level sensing module note detects that the time of hydroful is initial time t0, in t0To t0In+T time, level sensing
Module persistently receives the level sensing signal of liquid level gauge one and liquid level gauge two, and remembers that the hydroful signal number detected is a；
If a=2, hydroful signal enters step after eliminating（1）；
If a ＜ 2, into step（4）；
（4）Level sensing failure logging times N=N+1 is changed, as N ＜ 5, remembers T=T+ NT；
Enter step after the elimination of hydroful signal（2）；As N >=5, into step（5）；
4th, level sensing fault warning：
（5）Level sensing module assert that liquid level detection system breaks down, and level sensing module sends liquid level to CPU control modules
Fault alarm signal is detected, CPU control modules send liquid level fault warning order to fault warning system, and fault warning system is held
Row liquid level fault warning order, pending fault enter step after eliminating（1）.
Claims (10)
1. the waste liquid liquid level detection system with fault self-checking function, including level sensing module and liquid level gauge, level sensing mould
Block is connected and communicated with liquid level gauge, it is characterised in that：The liquid level gauge includes two or more, and each liquid level gauge is examined respectively
The hydroful state surveyed in liquid reserve tank body.
2. according to the waste liquid liquid level detection system described in power 1, it is characterised in that：The number of the liquid level gauge is two.
3. waste liquid liquid level detection system according to claim 2, it is characterised in that：The liquid level is calculated as Floating Ball Liquid Level and opened
Close.
4. waste liquid liquid level detection system according to claim 3, it is characterised in that：The liquid level is calculated as duck-beak type ball float liquid
Bit switch.
5. waste liquid liquid level detection system according to claim 4, it is characterised in that：It is vertical that two liquid level gauges are installed
Difference in height is less than or equal to 1cm.
6. waste liquid liquid level detection system according to claim 5, it is characterised in that：During installation, two liquid level gauge positions
In same level height.
7. the waste liquid liquid-level detecting method with fault self-checking function, it is characterised in that comprise the following steps：
（1）Liquid level monitors in real time：N separate liquid level gauges monitor the hydroful state in liquid reserve tank body, n >=2 in real time respectively；
When having detected hydroful signal, hydroful signal is reported, subsequently into step（2）；
（2）Level sensing fault self-checking：Note detects that the time of hydroful is initial time t0, in t0To t0In+T time, note inspection
The hydroful signal number measured is a；If a=n, hydroful signal enters step after eliminating（1）；If a ＜ n, into step（3）；
（3）Level sensing fault warning：Level sensing fault warning is carried out, after pending fault eliminates, into step（1）.
8. waste liquid liquid-level detecting method according to claim 7, it is characterised in that：
In step（1）Before, establish and initialize level sensing failure logging times N, remember N=0；
In step（2）In, as a=n, N=0 is changed, then enters step after the elimination of hydroful signal（1）；As a ＜ n, modification
N=N+1；If N ＜ Nmax, then step is entered after the elimination of hydroful signal（1）；If N >=Nmax, then into step（3）；
In step（3）In, after pending fault eliminates, N=0 is changed, subsequently into step（1）.
9. waste liquid liquid-level detecting method according to claim 8, it is characterised in that：In step（2）In, T it is big with N change and
Gradually extend.
10. waste liquid liquid-level detecting method according to claim 7, it is characterised in that：n=2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711073037.7A CN107727199A (en) | 2017-11-03 | 2017-11-03 | Waste liquid liquid level detection system and detection method with fault self-checking function |
Applications Claiming Priority (1)
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| CN108759988A (en) * | 2018-06-13 | 2018-11-06 | 行愿环保科技有限公司 | Link-type floating ball lever meter |
| WO2021017007A1 (en) * | 2019-08-01 | 2021-02-04 | 唐山哈船科技有限公司 | System and method for detecting sewer clogging causing urban waterlogging |
| CN112987804A (en) * | 2021-01-27 | 2021-06-18 | 宁夏隆基乐叶科技有限公司 | Waste liquid discharge method, control device, system and computer readable storage medium |
| CN114711636A (en) * | 2022-03-30 | 2022-07-08 | 杭州老板电器股份有限公司 | Control method and control device for water tank, electronic equipment and storage medium |
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