CN109649425B - Dirt capacity detection method, sanitation system and railway vehicle - Google Patents
Dirt capacity detection method, sanitation system and railway vehicle Download PDFInfo
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- CN109649425B CN109649425B CN201811533472.8A CN201811533472A CN109649425B CN 109649425 B CN109649425 B CN 109649425B CN 201811533472 A CN201811533472 A CN 201811533472A CN 109649425 B CN109649425 B CN 109649425B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D35/00—Sanitation
- B61D35/005—Toilet facilities
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- 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
- G01F23/0007—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 for discrete indicating and measuring
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Abstract
The invention relates to a dirt capacity detection method, a sanitation system and a railway vehicle, wherein the detection method comprises a waste water and dirt discharge device and a storage tank, the storage tank is provided with an initial gear, a liquid filling gear and at least one intermediate gear, and each gear is correspondingly provided with a liquid level switch, and the method comprises the following steps: calculating the theoretical capacity of dirt in the storage box corresponding to each gear; comparing the calculated theoretical capacity with the actual capacity of the liquid level switch at the corresponding gear during action; and judging whether the liquid level switch corresponding to the gear is in a normal working state or a fault state according to the comparison result, and so on until the tank is full. According to the invention, through the confirmation of the theoretical capacity of the storage tank, the storage tank is matched with the liquid level switch to realize the double-safety monitoring of the liquid level, the storage tank can still be ensured to work reliably when the liquid level switch fails, the warning can be realized that the sewage tank overflows on the track after being full due to failure in the operation process of a railway passenger car, the zero discharge of the sewage and the wastewater of the train is realized, and the energy conservation and the environmental protection are realized.
Description
Technical Field
The invention relates to a sanitation system, in particular to a sanitation system arranged on a railway vehicle and a detection method of dirt capacity in the sanitation system, and belongs to the technical field of control of the sanitation system of the railway vehicle.
Background
In recent years, toilets such as domestic high-speed rail motor cars and the like are all provided with a vacuum excrement collecting system for collecting sewage and washing wastewater of toilet bowls in the toilets, the sewage and the washing wastewater are temporarily stored in a sewage tank under the cars, and the sewage in the sewage tank is pumped into a sewage suction truck or a municipal pipe network for treatment after the trains enter the station and enter the warehouse. A100% full liquid level switch is arranged in the sewage tank and used for controlling the toilet to stop using after the sewage tank is full, so that sewage is prevented from overflowing onto a track to cause pollution due to continuous use.
Vacuum collection just system on the train is in the use, and the operating mode is more abominable in the filth case, is mingled with a large amount of toilet paper, sanitary towel and other debris in the sewage, combines the filth that often takes place to adhere to and dry out dirt scheduling problem for filth case level switch often breaks down, can not in time convey the actual capacity condition of filth case to control system, causes the filth excessive. The conventional liquid level of a railway dirt box in China is provided with a floating ball type mechanical liquid level switch, a capacitance type liquid level switch and the like, the failure rate is high, the floating ball switch is often hung by dirt and toilet paper and does not float, and the surface of the capacitance type liquid level switch is easy to dirt and cause no signal output.
At present, the complex working condition of the sewage tank is dealt with, and the sewage tank is not completely suitable for reliable products.
Disclosure of Invention
The invention mainly solves the technical problem of providing a dirt capacity detection method and a sanitation system, and the method and the sanitation system are matched with a liquid level switch to realize double-safety monitoring of the liquid level through confirmation of theoretical capacity of a storage tank, so that the storage tank can still be ensured to work reliably when the liquid level switch fails. A rail vehicle having the sanitary system mounted thereon is also provided.
In order to achieve the above object, a first technical solution of the present invention is:
a dirt capacity detection method comprises a waste water and dirt discharge device and a storage tank, wherein the storage tank is provided with an initial gear, a liquid full gear and at least one intermediate gear, and each gear is correspondingly provided with a liquid level switch, and the method comprises the following steps:
A. calculating the theoretical capacity of dirt in the storage box corresponding to each gear;
B. comparing the calculated theoretical capacity with the actual capacity of the liquid level switch at the corresponding gear during action;
C. and judging whether the liquid level switch corresponding to the gear is in a normal working state or a fault state according to the comparison result, and so on until the tank is full.
Further, in the step B, comparing whether a difference between the theoretical capacity and the actual capacity is within a set error range;
the error range formula is as follows:
wherein V1-theoretical capacity of the storage tank;
vt-actual Capacity of reservoir;
kmin-error lower limit coefficient;
kmax-error upper limit coefficient.
Further, in the step C, if the difference between the theoretical capacity and the actual capacity is within the error range, it is determined that the liquid level switch corresponding to the gear is in a normal operating state;
and if the difference value between the theoretical capacity and the actual capacity exceeds the error range, judging that the liquid level switch corresponding to the gear is in a fault state.
Further, in the step C, the method further includes:
when the liquid level switch is judged to be in a normal working state, recalculating the theoretical capacity from the gear to the next high gear by taking the actual capacity corresponding to the liquid level switch as the reference capacity, and repeating the steps B and C until the tank is full;
and when the liquid level switch is judged to be in a fault state, recalculating the theoretical capacity from the previous lower gear to the next high gear by taking the actual capacity corresponding to the liquid level switch at the previous lower gear as the reference capacity, and repeating the steps B and C until the tank is full.
And D, judging that the sewage tank is full when one index in the theoretical capacity or the actual capacity reaches a full liquid gear, giving an alarm to prompt, and controlling the sanitary system to stop using.
Further, the theoretical capacity of the waste in the storage tank is equal to the product of the discharge amount per discharge and the accumulated discharge times of the waste discharge apparatus.
The second technical scheme of the invention is as follows:
a sanitary system for realizing the sewage capacity detection method comprises a waste water and sewage discharge device, a storage tank and a control unit, wherein a liquid level switch which is arranged corresponding to an initial gear, at least one intermediate gear and a full liquid gear is arranged on the storage tank, and the control unit comprises:
the times accumulation module is used for accumulating the emptying times of the waste water and sewage discharge equipment;
the calculation module is used for calculating the theoretical capacity of the collected dirt in the storage tank;
the comparison and judgment module is used for respectively comparing the calculated theoretical capacity with the corresponding actual capacity when each gear liquid level switch acts;
and the control display module is used for judging and displaying whether the corresponding liquid level switch is in a normal working state or a fault state according to the comparison result.
Further, an error lower limit coefficient kmin and an error upper limit coefficient kmax of each gear are stored in the comparison and judgment module in advance.
Further, the storage tank is a sewage tank or a transfer tank or a waste water tank.
The third technical scheme of the invention is as follows:
a rail vehicle is fitted with a sanitary system as described above.
In summary, compared with the prior art, the dirt capacity detection method, the sanitation system and the rail vehicle provided by the invention have the following advantages:
(1) according to the invention, through the confirmation of the theoretical capacity of the storage tank, the storage tank is matched with the liquid level switch to realize the double-safety monitoring of the liquid level, the storage tank can still be ensured to work reliably when the liquid level switch fails, the warning can be realized that the sewage tank overflows on the track after being full due to failure in the operation process of a railway passenger car, the zero discharge of the sewage and the wastewater of the train is realized, and the energy conservation and the environmental protection are realized.
(2) The method and the sanitary system for detecting the sewage capacity provided by the invention can be suitable for various mobile toilets, vehicle-mounted toilets and rail vehicles installed in cities.
Drawings
FIG. 1 is a block diagram of a sanitation system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a detection method of the present invention;
FIG. 3 is a block diagram of a sanitary system according to an embodiment of the present invention.
As shown in fig. 1 to 3, a sewage tank 1, a transit tank 2, a waste water tank 3, a hand washing basin 4, a toilet bowl 5, a vacuum generating device 6, a water pressurizer 7, a drain pipe 8, a first drain valve 9, a drain pipe 10, a second drain valve 11, a drain pipe 12 and a third drain valve 13.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the first embodiment is as follows:
as shown in fig. 1, the sanitation system provided in this embodiment is a vacuum excrement collecting sanitation system, and the sanitation system includes a waste water and sewage discharge device, a storage tank, and a control unit, wherein a liquid level switch is disposed on the storage tank and corresponds to an initial gear, at least one intermediate gear, and a full liquid gear.
Wherein, the storage box can be a sewage box 1, a transfer box 2 or a waste water box 3 in the sanitary system, and the waste water and sewage discharge equipment comprises a hand washing basin 4, a toilet bowl 5 and the like. The sewage tank 1 or the transfer tank 2 is connected with a vacuum generating device 6, a water supply pipeline of the toilet bowl 5 is connected with a water booster 7 in series, and the water inlet pipes of the hand washing basin 4 and the toilet bowl 5 are connected with a clean water tank (not shown in the figure).
In this embodiment, do not install transfer case 2 among the sanitary system, the waste water that wash-basin 4 discharged relies on gravity to discharge to keeping in waste water tank 3, through drain pipe 8 intercommunication between waste water tank 3 and the filth case 1, has concatenated first escape valve 9 on drain pipe 8, and vacuum generator 6 is connected to filth case 1, and filth case 1 adopts vacuum maintenance formula box. When the waste water tank 3 reaches the full liquid level, the vacuum generating device 6 is started and vacuum is established in the sewage tank 1, and when the vacuum degree reaches the setting, the first sewage discharge valve 9 is opened, and waste water collected in the waste water tank 3 is sucked into the sewage tank 1 under the action of negative pressure.
The bottom of the toilet bowl 5 is communicated with the sewage tank 1 through a sewage discharge pipe 10, and a second sewage discharge valve 11 is arranged on the sewage discharge pipe 10. When the passenger uses the sanitary toilet, the passenger presses the flushing switch, the water booster 7 acts to pressurize flushing water provided by the clean water tank, and then the flushing water is flushed into the toilet bowl 5 through a nozzle on the toilet bowl 5 to be flushed, meanwhile, the vacuum generating device 6 establishes vacuum in the sewage tank 1, when the vacuum degree reaches the set value, the second blow-down valve 11 is controlled to be opened, and sewage is sucked into the sewage tank 1 under the action of negative pressure.
The sewage tank 1 is provided with liquid level switches, the number of the liquid level switches is generally divided into two types, one type is provided with 5-gear liquid level switches of 0%, 25%, 50%, 75%, 100% and the like, and the other type is provided with 3-gear liquid level switches of 20%, 80%, 100% and the like.
Along with frequent discharge of the toilet bowl 5 and the waste water tank 3, the dirt in the dirt tank 1 is gradually increased, after the dirt reaches the corresponding liquid level, the corresponding liquid level switch is conducted in a signal mode and is transmitted to the control unit, when the dirt tank is full, the 100% liquid level switch is conducted, the signal is transmitted to the control unit, an alarm is given to prompt that the dirt tank 1 is full, and a driver and passengers of the vehicle lock the corresponding toilet. After the train enters the train section maintenance warehouse after the operation on the same day, the sewage tank 1 is emptied by the sewage pumping equipment.
For the sake of simplicity, a 5-step liquid level switch is provided in the vacuum holding type waste tank 1, and a sanitary system in which the transfer tank 2 is not provided but waste water and waste in the waste water tank 3 and the toilet bowl 5 are directly discharged into the waste tank 1 will be described as an example, and the detection methods for the waste water and waste volume in the waste tanks 1, the transfer tank 2, and the waste water tank 3 in other forms and kinds are the same.
A5-gear liquid level switch is arranged in the sewage tank 1 and used for displaying and controlling the capacity state of the sewage in the sewage tank 1. The 5-gear liquid level switches are respectively 0%, 25%, 50%, 75% and 100%. The 0% liquid level is an initial gear, and the 0% liquid level switch is used for displaying and monitoring the emptying state of the sewage tank; the 25% liquid level and the 50% liquid level are intermediate gears, and the liquid level switch is used for displaying the liquid level state of the sewage tank; the 75% liquid level is also the middle gear, and the liquid level switch is used for giving an early warning to a master control console of a train cab and informing that the sewage tank 1 is close to the upper limit of use; the 100% liquid level is a full liquid gear, and the 100% liquid level switch is used for controlling the toilet to stop use.
In this embodiment, the control unit in the hygiene system includes a number accumulation module, a calculation module, a comparison and judgment module, and a control display module.
Wherein, the number of times accumulation module is used for accumulating the emptying times of the waste water tank 3 and the toilet bowl 5. If the waste tank 1 only collects the waste of the toilet bowl 5, only the emptying times of the toilet bowl 5 are counted.
And the calculation module is used for calculating the theoretical capacity of the collected dirt in the dirt box 1. Because the flushing quantity of the toilet bowl 5 is a fixed value every time, the average value of the discharge quantity of excrement of the toilet bowl every time is stable, the discharge quantity of the waste water tank 3 emptied every time is a fixed value, and the theoretical capacity of the sewage tank 1 can be calculated by the calculating module according to the accumulated emptying times of the toilet bowl 5 and the waste water tank 3. The formula is as follows:
V1＝n×(d+f)+m×k (1)
wherein V1-theoretical capacity of the waste bin;
n-number of times the toilet is emptied;
m is the number of times the wastewater tank is emptied;
d, flushing quantity of the toilet bowl every time, wherein the unit is L/time;
f is the average discharge of the toilet bowl used each time, and the unit is L/time;
k is the discharge amount of the waste water tank emptied each time, and the unit is L/time.
And the comparison and judgment module is used for respectively comparing the calculated theoretical capacity of the sewage tank 1 with the capacity corresponding to the actual liquid level of 25%, 50%, 70% and 100%. An error range is stored in the comparison and judgment module in advance, namely an error lower limit coefficient kmin and an error upper limit coefficient kmax are preset, and whether the difference value between the theoretical capacity and the actual capacity is within the error range is judged. The formula is as follows:
wherein V1-theoretical capacity of the waste bin;
vt-actual volume of the dirt tank;
kmin-error lower limit coefficient;
kmax-error upper limit coefficient.
And the control display module is used for judging whether the liquid level switch corresponding to the liquid level capacity is in a normal working state or a fault state according to the comparison result output by the comparison and judgment module, displaying the judgment result in a display for a crew member to refer to, and simultaneously giving an alarm when the judgment result indicates that the full liquid level condition is met.
When the theoretical capacity of the sewage tank 1 exceeds the error range, the liquid level switch with the corresponding capacity is judged to be in a fault state, and when the theoretical capacity of the sewage tank 1 is within the error range, the liquid level switch with the corresponding capacity is judged to be in a normal working state. For example, when the theoretical capacity of the sewage tank 1 reaches 25% of the liquid level, the 25% corresponding liquid level switch has four states, one is in advance connection, the other is in normal connection, the third is in delayed connection, and the fourth is not in connection, at this time, if the difference value between the actual capacity when the 25% liquid level switch is in connection and the theoretical capacity when the 25% liquid level switch is in connection exceeds the error range, the 25% liquid level switch is judged to be in a fault state, and the situation that the 25% liquid level switch is not in connection can be directly judged to be in the fault state. The difference between the actual capacity and the theoretical capacity at the time of normal turn-on, or at the time of advance and delay turn-on is judged to be in a normal working state by the 25% liquid level switch within an error range.
When the 25% liquid level switch is judged to be in a normal working state, in order to reduce the error of theoretical calculation, the previous accumulated emptying times are cleared, the capacity when the 25% liquid level switch is switched on is taken as the reference capacity, the accumulated emptying times are restarted, the theoretical capacity of the next high liquid level stage is calculated, namely the theoretical capacity of the liquid level from 25% to 50% is calculated, and the rest is done until the sewage tank is full.
When the 25% liquid level switch is judged to be in a fault state, the accumulated emptying frequency is not cleared, the capacity corresponding to the liquid level switch in the normal working state which is lower than the above capacity is taken as the reference capacity, the initial point of accumulated calculation is taken, the accumulated emptying frequency is calculated, the theoretical capacity of the next high liquid level stage is calculated, namely the theoretical capacity of the liquid level from 0% to 50% is calculated in an accumulated manner, and the rest is done in sequence until the sewage tank is full.
When the 100% full liquid level switch is judged to have no fault and other low liquid level switches are in a fault state, if the control display module judges that the full capacity of the accumulated sewage tank is within a theoretical range, the 100% full liquid level switch is used as a primary control condition at the moment, the 100% full liquid level switch is switched on to judge that the sewage tank is full, the alarm prompt is carried out, and the control system is stopped. When all the liquid levels in 0%, 25%, 50%, 75% and 100% are in fault, the control display module gives an alarm prompt if the capacity of the accumulated dirt box 1 is judged to reach the theoretical full capacity of the box, and the control system is stopped. That is, when only one index reaches the full liquid level in the theoretical value or the actual value, the sewage tank is judged to be full, the alarm is given, and the control system is stopped.
As shown in fig. 2, the specific method includes the following steps:
A. the emptying gear with 0% of liquid level is used as the empty tank liquid level, the times of emptying of the waste water tank 3 and the toilet stool 5 are accumulated by the times accumulation module, and the theoretical capacity of the sewage tank 1 is calculated by the calculation module according to the emptying times.
B. The calculated theoretical capacity of the waste tank 1 and the actual level-corresponding capacities of 25%, 50%, 70%, and 100% are compared, respectively. And judging whether the difference value between the theoretical capacity and the actual capacity is within the error range.
Specifically, when the theoretical capacity of the waste tank 1 reaches 25% of the liquid level, the theoretical capacity is compared with the corresponding actual capacity when the 25% liquid level switch is turned on, and whether the difference between the 25% theoretical capacity and the actual capacity when the 25% liquid level switch is turned on is within a set error range is calculated.
The 50%, 70%, 100% levels were compared in the same manner.
C. And sequentially judging whether the liquid level switches of all gears are in a normal working state or a fault state according to the comparison result until the sewage tank is full.
Specifically, when the difference between the theoretical capacity of 25% and the actual capacity of the 25% liquid level switch when the liquid level switch is turned on is within the error range, that is, the theoretical capacity and the actual capacity basically accord with each other, it is determined that the 25% liquid level switch is in a normal working state, and so on.
At this time, in order to reduce the error of theoretical calculation, the previous accumulated emptying times are cleared, the emptying times of the next high liquid level stage are accumulated again by taking the current actual liquid level (such as the capacity where a 25% liquid level switch is switched on) as a reference, namely the emptying times from the 25% liquid level to the 50% liquid level are accumulated, the theoretical capacity and the actual capacity of the 50% liquid level are compared, whether the 50% liquid level switch is in a normal working state is judged, and the process is repeated until the sewage tank is full.
When the difference value between the theoretical capacity of 25% and the actual capacity of the 25% liquid level switch when the 25% liquid level switch is switched on exceeds the error range, or the 25% liquid level switch is not switched on all the time, namely the theoretical capacity does not accord with the actual capacity, the 25% liquid level switch is judged to be in a fault state, and the like.
At the moment, the capacity of the upper lower gear (0% liquid level gear) is taken as a reference, the emptying frequency is accumulated, whether the liquid level switch corresponding to the next high liquid level gear (50% liquid level gear) breaks down or not is judged, and the process is repeated until the sewage tank is full.
D. When one index in the theoretical capacity or the actual capacity reaches a full liquid gear, the sewage tank is judged to be full, and an alarm is given to control the sanitary system to stop using.
When the 100% full liquid level switch is judged to have no fault and other low liquid level switches are in a fault state, if the control display module judges that the full capacity of the accumulated sewage tank is within a theoretical range, the 100% full liquid level switch is used as a primary control condition at the moment, the 100% full liquid level switch is switched on to judge that the sewage tank is full, the alarm prompt is carried out, and the control system is stopped. When all the liquid levels in 0%, 25%, 50%, 75% and 100% are in fault, the control display module gives an alarm prompt if the capacity of the accumulated dirt box 1 is judged to reach the theoretical full capacity of the box, and the control system is stopped. That is, when only one index reaches the full liquid level in the theoretical value or the actual value, the sewage tank is judged to be full, the alarm is given, and the control system is stopped.
When any one or more of the 0%, 25%, 50%, 75% and 100% liquid level switches are in failure, the control unit performs the starting point of the capacity accumulation calculation by taking one of the low liquid levels as a reference, and performs comparison with other high liquid levels without failure to perform secondary classification until the sewage tank is full.
Because of the train all carries out 1 dirt suction of filth case before carrying a passenger for the first time and empty, and each liquid level switch state all detects, can not have the whole fault conditions of 1 liquid level of filth case, this detection method passes through the affirmation of 1 theoretical capacity of filth case, realizes the dual fail safe control of liquid level with the liquid level switch cooperation, guarantees still can guarantee the reliable work of filth case when liquid level switch breaks down, effectively solves the filth case that the liquid level trouble in the train operation process leads to and is full, and the condition of filth outflow takes place.
The method for detecting the volume of the sewage tank and the sanitation system provided by the invention can be suitable for various mobile sanitation systems, vehicle-mounted sanitation systems, railway vehicle sanitation systems and the like installed in cities.
Example two:
as shown in fig. 3, in the embodiment, a transfer box 2 is installed in a sanitary system, wastewater discharged from a hand basin 4 is discharged into a wastewater box 3 by gravity for temporary storage, the wastewater box 3 is communicated with the transfer box 2 through a drain pipe 8, a first blowoff valve 9 is arranged in the drain pipe 8, the transfer box 2 is connected with a vacuum generating device 6, when the wastewater box 3 reaches a full liquid level, the vacuum generating device 6 is started and vacuum is established in the transfer box 2, and when the vacuum degree reaches a set value, the blowoff valve is opened to suck the wastewater collected in the wastewater box 3 into the transfer box 2 under the action of negative pressure.
The bottom of the toilet stool 5 is communicated with the transfer box 2 through a drain pipe 10, and a second drain valve 11 is arranged on the drain pipe 10. After a user presses a flushing switch, the water supercharger 7 acts to pressurize flushing water provided by the clean water tank, the flushing water is flushed into the toilet bowl 5 through a nozzle on the toilet bowl 5 to be flushed, after flushing is finished, the vacuum generating device 6 is started, vacuum is built in the transfer box 2, when the vacuum degree reaches a set value, the second blow-off valve 11 is opened, and flushing water and dirt are sucked into the transfer box 2 through the blow-off pipe 10 under the action of negative pressure.
In the sanitary system, the sewage tank 1 is selected as a normal pressure sewage tank, the transfer tank 2 is communicated with the sewage tank 1 through a sewage discharge pipe 12, and a third sewage discharge valve 13 is arranged in the sewage discharge pipe 12. When the transfer case 2 reaches the full liquid level state, open third blowoff valve 13, exert the malleation in to transfer case 2 through compressed air source simultaneously, discharge waste water and the filth of keeping in the transfer case 2 to the filth case 1. The transfer box 2 can also discharge the waste water and the sewage into the sewage box 1 periodically according to the system setting and the sewage suction times.
In the sanitary system, a multi-gear liquid level switch is arranged in the transfer box 2, and only the dirt capacity of the multi-gear liquid level switch can be detected by adopting the detection method described in the first embodiment.
The dirt capacity of the dirt container 1 can also be detected by the detection method described in the first embodiment, wherein the theoretical capacity of the dirt container 1 is also determined by accumulating the emptying times of the transfer container 2 and the discharge amount per emptying.
Since the sewage in the transfer tank 2 is discharged in a regular and constant amount, the theoretical capacity of the sewage tank 1 can also be accumulated by the number of times of emptying the waste water tank 3 and the toilet bowl 5 and the discharge amount per emptying as described in the first embodiment.
Example three:
a rail vehicle employs a sanitation system as described in the first and second embodiments, while controlling the operation state of a filth tank 1 using a filth capacity detection method as described in the first embodiment.
Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The sewage capacity detection method comprises a waste water and sewage discharge device and a storage tank, wherein the storage tank is provided with an initial gear, a liquid full gear and at least one intermediate gear, and each gear is correspondingly provided with a liquid level switch, and the sewage capacity detection method is characterized by comprising the following steps:
A. calculating the theoretical capacity of dirt in the storage box corresponding to each gear;
B. comparing the calculated theoretical capacity with the actual capacity of the liquid level switch at the corresponding gear during action;
C. and judging whether the liquid level switch corresponding to the gear is in a normal working state or a fault state according to the comparison result, and so on until the tank is full.
2. A method of detecting a volume of contaminants according to claim 1, wherein: in the step B, comparing whether the difference between the theoretical capacity and the actual capacity is within a set error range;
the error range formula is as follows:
wherein V1-theoretical capacity of the storage tank;
vt-actual Capacity of reservoir;
kmin-error lower limit coefficient;
kmax-error upper limit coefficient.
3. A method of detecting a volume of contaminants according to claim 2, wherein: in the step C, if the difference value between the theoretical capacity and the actual capacity is within the error range, the liquid level switch corresponding to the gear is judged to be in a normal working state;
and if the difference value between the theoretical capacity and the actual capacity exceeds the error range, judging that the liquid level switch corresponding to the gear is in a fault state.
4. A dirt capacity detection method according to claim 3, characterised in that: in the step C, the method further includes:
when the liquid level switch is judged to be in a normal working state, recalculating the theoretical capacity from the gear to the next high gear by taking the actual capacity corresponding to the liquid level switch as the reference capacity, and repeating the steps B and C until the tank is full;
and when the liquid level switch is judged to be in a fault state, recalculating the theoretical capacity from the previous lower gear to the next high gear by taking the actual capacity corresponding to the liquid level switch at the previous lower gear as the reference capacity, and repeating the steps B and C until the tank is full.
5. A method of detecting a volume of contaminants according to claim 1, wherein: and D, judging that the sewage tank is full when one index in the theoretical capacity or the actual capacity reaches a full liquid gear, giving an alarm to prompt, and controlling the sanitary system to stop using.
6. A method of detecting a volume of contaminants according to any of claims 1 to 5, wherein: the theoretical capacity of the dirt in the storage tank is equal to the product of the discharge amount of each emptying of the waste water and dirt discharge device and the accumulated emptying times.
7. A sanitary system for implementing a soil volume sensing method according to any one of claims 1 to 6, comprising a waste water and soil discharge device, a storage tank on which a level switch is provided corresponding to an initial gear, at least one intermediate gear and a full gear, and a control unit, wherein the control unit comprises:
the times accumulation module is used for accumulating the emptying times of the waste water and sewage discharge equipment;
the calculation module is used for calculating the theoretical capacity of the collected dirt in the storage tank;
the comparison and judgment module is used for respectively comparing the calculated theoretical capacity with the corresponding actual capacity when each gear liquid level switch acts;
and the control display module is used for judging and displaying whether the corresponding liquid level switch is in a normal working state or a fault state according to the comparison result.
8. A sanitary system according to claim 7, wherein: and an error lower limit coefficient kmin and an error upper limit coefficient kmax of each gear are prestored in the comparison and judgment module.
9. A sanitary system according to claim 7, wherein: the storage tank is a sewage tank or a transfer tank or a waste water tank.
10. A rail vehicle, characterized in that: fitted with a sanitary system as claimed in any one of claims 7-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200957818Y (en) * | 2006-10-09 | 2007-10-10 | 清华同方威视技术股份有限公司 | Water supplier for railway coach |
| CN102596678A (en) * | 2009-10-30 | 2012-07-18 | 西门子公司 | Rail vehicle with filling level monitoring of a waste water tank |
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| CN103080862A (en) * | 2010-09-09 | 2013-05-01 | 流动科技株式会社 | Pressure-tank water-level control method in a piping system using a level transmitter and a level switch |
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| CN105150798A (en) * | 2015-08-26 | 2015-12-16 | 长沙高汇环保科技有限公司 | Electric car air conditioner system and control method thereof |
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| CN200957818Y (en) * | 2006-10-09 | 2007-10-10 | 清华同方威视技术股份有限公司 | Water supplier for railway coach |
| CN102596678A (en) * | 2009-10-30 | 2012-07-18 | 西门子公司 | Rail vehicle with filling level monitoring of a waste water tank |
| CN103080862A (en) * | 2010-09-09 | 2013-05-01 | 流动科技株式会社 | Pressure-tank water-level control method in a piping system using a level transmitter and a level switch |
| CN102838179A (en) * | 2012-10-08 | 2012-12-26 | 北京中环嘉诚环境工程有限公司 | Control method for automatic drug adding device in sewage treatment system |
| CN104236035A (en) * | 2013-06-08 | 2014-12-24 | 珠海格力电器股份有限公司 | Water tank, air conditioner with water tank and air conditioner condensate water treatment method |
| CN105150798A (en) * | 2015-08-26 | 2015-12-16 | 长沙高汇环保科技有限公司 | Electric car air conditioner system and control method thereof |
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| CN109649425A (en) | 2019-04-19 |
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