CN108817099A

CN108817099A - A kind of control method of wet-leveling liquid disengaging feed tank, apparatus and system

Info

Publication number: CN108817099A
Application number: CN201810573974.7A
Authority: CN
Inventors: 葛伟; 张�杰; 高文晖; 吴鹏; 杜伟; 宋希光; 王玲; 鲍广荣; 张强
Original assignee: Laiwu Iron and Steel Group Electronic Co Ltd
Current assignee: Laiwu Iron and Steel Group Electronic Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2018-11-16
Anticipated expiration: 2038-06-06
Also published as: CN108817099B

Abstract

The embodiment of the present application discloses the control method and apparatus and system of a kind of wet-leveling liquid disengaging feed tank, wherein the method includes：After obtaining the first liquid level signal and the second liquid level signal, judge whether first liquid level signal breaks down according to the parameter information of the wet-leveling liquid control system if controlling wet-leveling liquid by first liquid level signal and passing in and out feed tank；If first liquid level signal breaks down, further according to the parameter information of the wet-leveling liquid control system, judge whether second liquid level signal breaks down；If second liquid level signal is without failure, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed tank.Wet-leveling liquid can be controlled using preceding method and apparatus and system by the second liquid level signal and pass in and out feed tank when the first liquid level signal breaks down, promote the reliability of control wet-leveling liquid disengaging feed tank.

Description

A kind of control method of wet-leveling liquid disengaging feed tank, apparatus and system

Technical field

This application involves automation control area more particularly to a kind of control methods of wet-leveling liquid disengaging feed tank, dress It sets and system.

Background technique

It is a link indispensable in the production process of flat cold-rolled sheet that the wet process of strip is smooth.Wet process finishing operations tool Body is to spray wet-leveling liquid by being laterally positioned on the roll on planisher in planisher entrance, and in planisher outlet side Belt steel surface is dried, can effectively remove the impurity such as the iron for being attached to roll surface, carbon, while stabilization can be played There is the defects of load mould to achieve the purpose that reduce on strip in roller shape, the effect for preventing thermal expansion of rollers.

In the wet process formation process of strip, wet-leveling liquid is stored in feed tank, and the liquid level in feed tank can be with wet flat The use of whole liquid and change, therefore, it is necessary to the liquid level according to wet-leveling liquid in feed tank, feed tank is passed in and out to wet-leveling liquid It is controlled.Fig. 1 is existing wet-leveling liquid control system architecture schematic diagram, referring to Fig. 1, the wet-leveling liquid control system packet Feed tank 10, magnetic double level gauge 20, addition pump 30 and solution feed pump 40 are included, further includes controller, controller does not show in Fig. 1 Out, which can be independently of the controller except the magnetic double level gauge 20, such as programmable logic controller (PLC) (Programmable Logic Controller, PLC) includes magnetic buoy 60 in the magnetic double level gauge 20 and multiple Liquid level control switch 50, the liquid level control switch 50 are the liquid level sensor being arranged in magnetic double level gauge 20.Wherein, institute Feed tank 10 is stated for storing wet-leveling liquid, the magnetism buoy 60 swims in liquid surface, when touching some liquid level control After making switch 50, the liquid level control switch 50 can be triggered to PLC and feed back liquid level signal.The addition pump 30 and the solution feed pump 40 for after the PLC receives liquid level signal, controlling the start and stop of the addition pump 30 and solution feed pump 40, to control described wet Leveling precision passes in and out the feed tank 10.

For example, it is deep according to the tank of the feed tank 10, liquid level control switch 50 is set in the magnetic double level gauge 20, The liquid level control switch 50 includes indicating that tank expires the liquid level sensor of position, high liquid level, low liquid level and ullage position.It is smooth in wet process It in the process, can when the liquid level of the wet-leveling liquid in the feed tank 10 rises to the high liquid level by the low liquid level The magnetic buoy 60 being placed in the magnetic double level gauge 20 is driven to rise to the high liquid level, institute by the low liquid level The liquid level signal that liquid level control switch 50 feeds back the high liquid level to the PLC is stated, the PLC is in the liquid for receiving the high liquid level After the signal of position, according to the liquid level signal, the addition pump 30 is closed, so that controlling the wet-leveling liquid passes in and out the feed tank 10。

But inventor has found in the research process of the application, the controlling party of existing wet-leveling liquid disengaging feed tank Method, the problem of will appear magnetic buoy bite due to magnetic double level gauge, magnetic buoy can not correctly reach Liquid level sometimes Switch causes liquid level control switch to transmit correct liquid level signal without normal direction controller, and addition pump and solution feed pump can not normal works Make, causes control wet-leveling liquid disengaging feed tank to break down, so that it cannot it is smooth to carry out normal wet process.

Summary of the invention

It is existing to solve this application provides a kind of control method of wet-leveling liquid disengaging feed tank, apparatus and system This lower problem of wet-leveling liquid control method stability.

In a first aspect, the application provides a kind of control method of wet-leveling liquid disengaging feed tank, the method is applied to control Device processed, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge And second liquid level gauge, the method includes：

The first liquid level signal and the second liquid level signal are obtained, first liquid level signal is first liquid level gauge feedback Liquid level signal, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

If controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the wet-leveling liquid control system Parameter information, judge whether first liquid level signal breaks down；

If first liquid level signal breaks down, according to the parameter information of the wet-leveling liquid control system, institute is judged State whether the second liquid level signal breaks down；

If second liquid level signal is without failure, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed flow Tank.

With reference to first aspect, in one implementation, according to the parameter information of the wet-leveling liquid control system, judgement Whether first liquid level signal breaks down, including：

After the wet-leveling liquid control system runs preset duration, the first liquid level of the first liquid level gauge feedback is obtained First liquid level changing value of the signal in the preset duration；

According to the tank bottom area of the preset duration, the flow information of liquid delivery device and the feed tank, determine Liquid level change threshold, wherein first liquid level signal, preset duration, the flow information of liquid delivery device and the confession The tank bottom area of flow container is the parameter information of the wet-leveling liquid control system；

Compare the first liquid level changing value and the liquid level change threshold, according to comparison result, determines first liquid Whether position signal breaks down, wherein if the first liquid level changing value is consistent with the liquid level change threshold, determines described the One liquid level signal is without failure；If the first liquid level changing value and the liquid level change threshold are inconsistent, described is determined One liquid level signal breaks down；

Alternatively,

If the first liquid level signal of the first liquid level gauge feedback can not be received, determine that first liquid level signal occurs Failure, wherein first liquid level signal is the parameter information of the wet-leveling liquid control system.

With reference to first aspect, in one implementation, judge whether second liquid level signal breaks down, including：

After the wet-leveling liquid control system runs preset duration, the second liquid level of the second liquid level gauge feedback is obtained Second liquid level changing value of the signal in the preset duration；

According to the tank bottom area of the preset duration, the flow information of liquid delivery device and the feed tank, determine Liquid level change threshold, wherein second liquid level signal, preset duration, the flow information of liquid delivery device and the confession The tank bottom area of flow container is the parameter information of the wet-leveling liquid control system；

Compare the second liquid level changing value and the liquid level change threshold, according to comparison result, determines second liquid Whether position signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determines described the Two liquid level signals are without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, described is determined Two liquid level signals break down；

Alternatively,

If the second liquid level signal of the second liquid level gauge feedback can not be received, determine that second liquid level signal occurs Failure, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

Second aspect, the application provide the control method of another wet-leveling liquid disengaging feed tank, and the method is applied to Controller, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes the first liquid level Meter and second liquid level gauge, the method includes：

If controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the wet-leveling liquid control system Parameter information, judge whether second liquid level signal breaks down；

If second liquid level signal is without failure, first liquid level signal and second liquid level signal, According to comparison result, determine whether first liquid level signal breaks down, wherein if first liquid level signal and described the Two liquid level signals are consistent, determine that first liquid level signal is without failure, if first liquid level signal and second liquid Position signal is inconsistent, determines that first liquid level signal breaks down；

If first liquid level signal breaks down, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed flow Tank.

In conjunction with second aspect, in one implementation, according to the parameter information of the wet-leveling liquid control system, judgement Whether second liquid level signal breaks down, including：

Compare the second liquid level changing value and the liquid level change threshold, second liquid level is determined according to comparison result Whether signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determines described second Liquid level signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, described second is determined Liquid level signal breaks down；

Alternatively,

In conjunction with second aspect, in one implementation, after judging whether second liquid level signal breaks down, also Including：

If second liquid level signal breaks down, judge whether first liquid level signal breaks down, including：

Alternatively,

The third aspect, the application provide a kind of control device of wet-leveling liquid disengaging feed tank, and described device is applied to control Device processed, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge And second liquid level gauge, described device include：

First obtains module, is institute for the first liquid level signal of acquisition and the second liquid level signal, first liquid level signal The liquid level signal of first liquid level gauge feedback is stated, second liquid level signal is the liquid level signal of second liquid level gauge feedback；

First judgment module, if feed tank is passed in and out for controlling wet-leveling liquid by first liquid level signal, according to institute The parameter information for stating wet-leveling liquid control system, judges whether first liquid level signal breaks down；

Second judgment module, if breaking down for first liquid level signal, according to the wet-leveling liquid control system Parameter information, judge whether second liquid level signal breaks down；

First control module passes through the second liquid level signal control if without failure for second liquid level signal Wet-leveling liquid processed passes in and out feed tank.

Fourth aspect, the application provide a kind of control device of wet-leveling liquid disengaging feed tank, and described device is applied to control Device processed, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge And second liquid level gauge, described device include：

Second obtains module, is institute for the first liquid level signal of acquisition and the second liquid level signal, first liquid level signal The liquid level signal of first liquid level gauge feedback is stated, second liquid level signal is the liquid level signal of second liquid level gauge feedback；

Third judgment module, if feed tank is passed in and out for controlling wet-leveling liquid by first liquid level signal, according to institute The parameter information for stating wet-leveling liquid control system, judges whether second liquid level signal breaks down；

4th judgment module, if for second liquid level signal it is without failure, first liquid level signal with Second liquid level signal determines whether first liquid level signal breaks down according to comparison result, wherein if described One liquid level signal is consistent with second liquid level signal, determines that first liquid level signal is without failure, if first liquid Position signal and second liquid level signal are inconsistent, determine that first liquid level signal breaks down；

Second control module is controlled if breaking down for first liquid level signal by second liquid level signal Wet-leveling liquid passes in and out feed tank.

5th aspect, the embodiment of the present application part provide a kind of wet-leveling liquid control system, the wet-leveling liquid control System includes controller, first liquid level gauge and second liquid level gauge, and the controller includes the device as described in claim 7,8；

The first liquid level gauge and the second liquid level gauge are used to obtain liquid level signal by liquid level control switch.

In conjunction with the 5th aspect, in one implementation, the wet-leveling liquid control system further includes：Ball valve, for clear Manage the wet-leveling liquid control system.

From the above technical scheme, the embodiment of the present application provide a kind of wet-leveling liquid disengaging feed tank control method and Apparatus and system.Wherein, the method includes：Obtain the first liquid level signal and the second liquid level signal, first liquid level signal For the liquid level signal of first liquid level gauge feedback, second liquid level signal is the liquid level letter of second liquid level gauge feedback Number；If controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the ginseng of the wet-leveling liquid control system Number information, judges whether first liquid level signal breaks down；If first liquid level signal breaks down, according to described wet The parameter information of smooth liquid control system, judges whether second liquid level signal breaks down；If second liquid level signal It is without failure, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed tank.

In the prior art, when needing to control wet-leveling liquid disengaging feed tank by liquid level signal, due to magnetic turning plate liquid level The problem of meter will appear magnetic buoy bite, leads to Liquid level so that magnetic buoy can not correctly reach liquid level control switch Switch transmits correct liquid level signal without normal direction controller, and addition pump and solution feed pump can not work normally, and causes control wet jetting piles Liquid passes in and out feed tank and breaks down, and the smooth stability of wet process is poor.And preceding method and apparatus and system are used, it can be the When one liquidometer breaks down, wet-leveling liquid is controlled by the second liquid level signal and passes in and out feed tank, accordingly, with respect to existing skill Art improves the reliability of control wet-leveling liquid disengaging feed tank, to improve the smooth stability of wet process.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is existing wet-leveling liquid control system architecture schematic diagram；

Fig. 2 is a kind of workflow of the control method for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides Schematic diagram；

Fig. 3 is the first liquid level in a kind of control method for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides The workflow schematic diagram of signal fault judgement；

Fig. 4 is the second liquid level in a kind of control method for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides The workflow schematic diagram of signal fault judgement；

Fig. 5 is the workflow of the control method for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides Journey schematic diagram；

Fig. 6 is the second liquid in the control method for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides The workflow schematic diagram of position signal fault judgement；

Fig. 7 is the first liquid in the control method for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides The workflow schematic diagram of position signal fault judgement；

Fig. 8 is a kind of structural representation of the control device for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides Figure；

Fig. 9 is that the structure of the control device for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides is shown It is intended to.

Specific embodiment

In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing and it is specific real Applying mode, the present application will be further described in detail.

In order to solve the problems, such as that existing wet-leveling liquid control method stability is lower, the application provides a kind of wet-leveling liquid Pass in and out control method, the apparatus and system of feed tank.

First embodiment of the invention discloses a kind of control method of wet-leveling liquid disengaging feed tank, and this method is applied to control Device, the controller are arranged in wet-leveling liquid control system, the wet-leveling liquid control system further include first liquid level gauge and Second liquid level gauge.

In the present embodiment, the controller is used to receive liquid level signal, and according to the liquid level signal, to wet jetting piles hydraulic control Device in system processed executes corresponding control operation.The first liquid level gauge or the second liquid level gauge are described for measuring The measuring device of liquid level in feed tank, such as magnetic double level gauge or far transmission level meter, it is not limited here.

In addition, the wet-leveling liquid control system further includes liquid delivery device, the liquid delivery device, in institute After stating controller reception liquid level signal, wet-leveling liquid is controlled according to the liquid level signal and passes in and out feed tank, such as addition pump assembly With feed flow pump assembly, wherein the addition pump assembly is used to for wet-leveling liquid being sent into the feed tank, and the feed flow pump assembly is used In wet-leveling liquid is sent out the feed tank.

Specifically, in wet process formation process, when the liquid level of wet-leveling liquid in the feed tank is changed, described To controller, controller exists for one liquidometer the first liquid level signal corresponding with first liquid level gauge feedback and the second liquid level signal After receiving the first liquid level signal and the second liquid level signal, according to first liquid level signal or second liquid level signal, control The liquid delivery device opens or closes, so that controlling wet-leveling liquid passes in and out the feed tank.

It is a kind of work of the control method for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 2 Make flow diagram, includes the following steps：

Step 101, the first liquid level signal and the second liquid level signal are obtained, first liquid level signal is first liquid level The liquid level signal of feedback is counted, second liquid level signal is the liquid level signal of second liquid level gauge feedback.

In this step, liquid level sensor is provided in the first liquid level gauge and the second liquid level gauge, the liquid level passes Sensor is used to convert liquid level to liquid level signal, and the sensor can be touch sensor, such as magnetic level becomes Device or float ball type level transducer etc. are sent, it is not limited here.

Step 102, if controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the wet-leveling liquid The parameter information of control system, judges whether first liquid level signal breaks down.

It is described to pass through the first liquid level signal control wet-leveling liquid disengaging feed tank in this step, it is embodied in, the control Device processed, according to first liquid level signal, controls the liquid delivery device after receiving first liquid level signal, Feed tank is passed in and out to control wet-leveling liquid by first liquid level signal.

In addition, the parameter information of the wet-leveling liquid control system can be anti-that is, in the wet-leveling liquid control system The parameter information of wet-leveling liquid control system operating status is presented, such as：First liquid level signal of the first liquid level gauge feedback, institute The second liquid level signal of second liquid level gauge feedback, the preset duration of wet-leveling liquid control system operation, the liquid is stated to pass The flow information of defeated device and the parameter information of the feed tank etc..

Step 103, if first liquid level signal breaks down, believed according to the parameter of the wet-leveling liquid control system Breath, judges whether second liquid level signal breaks down.

In this step, the parameter information of the wet-leveling liquid control system, i.e., in the wet-leveling liquid control system, energy The parameter information of wet-leveling liquid control system operating status is enough fed back, such as：The first liquid level letter of the first liquid level gauge feedback Number, the second liquid level gauge feedback the second liquid level signal, the wet-leveling liquid control system operation preset duration, the liquid The flow information of body transmitting device and the parameter information of the feed tank etc..

Step 104, if second liquid level signal is without failure, wet-leveling liquid is controlled by second liquid level signal Pass in and out feed tank.

In this step, after confirming that second liquid level signal is without failure, the controller is according to second liquid Position signal controls opening or closing for the liquid delivery device, so that controlling wet-leveling liquid passes in and out the feed tank.

Part of the embodiment of the present invention discloses a kind of control of wet-leveling liquid disengaging feed tank by step 101 to step 104 Method processed in this method, obtains the first liquid level signal and the second liquid level signal first, and first liquid level signal is described first The liquid level signal of liquidometer feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；If passing through institute The first liquid level signal control wet-leveling liquid disengaging feed tank is stated to sentence then according to the parameter information of the wet-leveling liquid control system Whether first liquid level signal that breaks breaks down；If first liquid level signal breaks down, according to the wet-leveling liquid The parameter information of control system, judges whether second liquid level signal breaks down；If second liquid level signal does not occur Failure then controls wet-leveling liquid by second liquid level signal and passes in and out feed tank.

The control method of disclosed a kind of wet-leveling liquid disengaging feed tank through the embodiment of the present invention, is obtaining the first liquid level After signal and the second liquid level signal, if controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to described wet The parameter information of smooth liquid control system, judges whether first liquid level signal breaks down, if first liquid level signal It breaks down, further according to the parameter information of the wet-leveling liquid control system, judges whether second liquid level signal event occurs Barrier passes in and out feed flow finally by second liquid level signal control wet-leveling liquid if second liquid level signal is without failure Tank.Therefore, method disclosed by the embodiments of the present invention can pass in and out feed tank controlling wet-leveling liquid by the first liquid level signal, And first liquid level signal controls wet-leveling liquid by the second liquid level signal and passes in and out feed tank, solve existing when breaking down In the control method of some wet-leveling liquid disengaging feed tanks, feed tank is passed in and out when needing to control wet-leveling liquid by liquid level signal When, the problem of will appear magnetic buoy bite due to magnetic double level gauge, magnetic buoy can not correctly reach Liquid level sometimes Switch causes liquid level control switch to transmit correct liquid level signal without normal direction controller, and addition pump and solution feed pump can not normal works Make, causes control wet-leveling liquid disengaging feed tank to break down, and control wet-leveling liquid disengaging feed tank reliability is poor Problem, it is lower so as to cause the smooth stability of wet process.

Second embodiment of the invention discloses the first liquid level signal event in a kind of control method of wet-leveling liquid disengaging feed tank Hinder judgment method, is in a kind of control method for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 3 The workflow schematic diagram of first liquid level signal breakdown judge, according to the parameter information of the wet-leveling liquid control system, judgement Whether first liquid level signal breaks down, and includes the following steps：

Step 201, judge whether that the first liquid level signal that the first liquid level gauge is fed back can be received, wherein if so, Execute step 202；If it is not, executing step 205.

In the present embodiment, judges whether the first liquid level signal that can receive the first liquid level gauge feedback, be subsequent Whether break down the precondition judged in step to first liquid level signal.If first liquid can be received First liquid level signal of position meter feedback, then can judge whether first liquid level signal breaks down；If cannot connect The first liquid level signal for receiving the first liquid level gauge feedback, then determine that first liquid level signal has had already appeared failure.

Step 202, after the wet-leveling liquid control system runs preset duration, the first liquid level gauge feedback is obtained First liquid level changing value of first liquid level signal in the preset duration.

In this step, by obtaining the first liquid level changing value, it can determine in the preset duration, described first The variation of liquid level signal feedback.

Step 203, according to the preset duration, the tank bottom face of the flow information of liquid delivery device and the feed tank Product, determine liquid level change threshold, wherein first liquid level signal, preset duration, liquid delivery device flow information and The tank bottom area of the feed tank is the parameter information of the wet-leveling liquid control system.

In this step, by the determination liquid level change threshold, it can determine in the preset duration, first liquid The variation that position signal should be fed back.Specifically, the liquid level change threshold, can be the preset duration and the liquid transmits The ratio of the product of the flow information of device and the feed tank tank bottom area.

Step 204, the first liquid level changing value determines institute according to comparison result with the liquid level change threshold State whether the first liquid level signal breaks down, wherein if the first liquid level changing value is consistent with the liquid level change threshold, really Fixed first liquid level signal is without failure；If the first liquid level changing value and the liquid level change threshold are inconsistent, really Fixed first liquid level signal breaks down.

In this step, by comparing the first liquid level changing value and the liquid level change threshold, described the can determine Whether one liquid level signal breaks down.

Step 205, if the first liquid level signal of the first liquid level gauge feedback can not be received, determine first liquid level Signal breaks down, wherein first liquid level signal is the parameter information of the wet-leveling liquid control system.

In this step, first liquid level signal that can not receive first liquid level gauge feedback can be described the Situations such as first liquid level signal of one liquidometer feedback can not be read.For example, the reading no to scale model of the first liquid level gauge It encloses, causes the controller that can not receive the first liquid level signal of the first liquid level gauge feedback, determine first liquid level Signal breaks down.

In addition, further including after judging whether first liquid level signal breaks down：If first liquid level signal is not It breaks down, passes in and out feed tank still through first liquid level signal control wet-leveling liquid.

Part of the embodiment of the present invention discloses a kind of control of wet-leveling liquid disengaging feed tank by step 201 to step 205 The method of first liquid level signal breakdown judge in method processed, in this method, it is first determined whether first liquid can be received First liquid level signal of position meter feedback obtains first liquid level after the wet-leveling liquid control system runs preset duration Count first liquid level changing value of the first liquid level signal of feedback in the preset duration；Then, according to the preset duration, liquid The tank bottom area of the flow information of body transmitting device and the feed tank, determines liquid level change threshold, wherein first liquid Position signal, preset duration, the flow information of liquid delivery device and the feed tank tank bottom area be the wet-leveling liquid The parameter information of control system；Then, the first liquid level changing value and the liquid level change threshold are tied according to comparing Fruit, determines whether first liquid level signal breaks down, wherein if the first liquid level changing value and the liquid level change threshold Value is consistent, determines that first liquid level signal is without failure；Finally, if the first liquid level changing value and the liquid level change Threshold value is inconsistent, determines that first liquid level signal breaks down.If the first of the first liquid level gauge feedback can not be received Liquid level signal then determines that first liquid level signal breaks down, wherein first liquid level signal is the wet jetting piles hydraulic control The parameter information of system processed.

Therefore, method disclosed by the embodiments of the present invention, by the parameter information of the wet-leveling liquid control system, to described Whether the first liquid level signal, which breaks down, is judged, can promote the same of the reliability of control wet-leveling liquid disengaging feed tank When, achieve the effect that the accuracy for promoting control wet-leveling liquid disengaging feed tank.

Third embodiment of the invention discloses the second liquid level signal event in a kind of control method of wet-leveling liquid disengaging feed tank Hinder judgment method, is the second liquid level letter in a kind of control method of wet-leveling liquid disengaging feed tank provided by the present application referring to Fig. 4 The workflow schematic diagram of number breakdown judge, includes the following steps：

Step 301, judge whether that the second liquid level signal that the second liquid level gauge is fed back can be received, wherein if so, Execute step 302；If it is not, executing step 305.

In the present embodiment, judges whether the second liquid level signal that can receive the second liquid level gauge feedback, be subsequent Whether break down the precondition judged in step to second liquid level signal.If second liquid can be received Second liquid level signal of position meter feedback, then can judge whether second liquid level signal breaks down；If cannot connect The second liquid level signal for receiving the second liquid level gauge feedback, then determine that second liquid level signal has had already appeared failure.

Step 302, after the wet-leveling liquid control system runs preset duration, the second liquid level gauge feedback is obtained Second liquid level changing value of second liquid level signal in the preset duration.

In this step, by obtaining the second liquid level changing value, it can determine in the preset duration, described second The variation of liquid level signal feedback.

Step 303, according to the preset duration, the tank bottom face of the flow information of liquid delivery device and the feed tank Product, determine liquid level change threshold, wherein second liquid level signal, preset duration, liquid delivery device flow information and The tank bottom area of the feed tank is the parameter information of the wet-leveling liquid control system.

In this step, by the determination liquid level change threshold, it can determine in the preset duration, second liquid The variation that position signal should be fed back.Specifically, the liquid level change threshold, can be the preset duration and the liquid transmits The ratio of the product of the flow information of device and the feed tank tank bottom area.

Step 304, the second liquid level changing value determines institute according to comparison result with the liquid level change threshold State whether the second liquid level signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, really Fixed second liquid level signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, really Fixed second liquid level signal breaks down.

In this step, by comparing the second liquid level changing value and the liquid level change threshold, described the can determine Whether two liquid level signals break down.

Step 305, if the second liquid level signal of the second liquid level gauge feedback can not be received, determine second liquid level Signal breaks down, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

In this step, second liquid level signal that can not receive second liquid level gauge feedback can be described the Situations such as second liquid level signal of two liquidometers feedback can not be read.For example, the reading no to scale model of the second liquid level gauge It encloses, causes the controller that can not receive the second liquid level signal of the second liquid level gauge feedback, determine second liquid level Signal breaks down.

In addition, further including after judging whether second liquid level breaks down：If second liquid level signal with it is described First liquid level signal breaks down, the controller outputting alarm information.

Part of the embodiment of the present invention discloses a kind of control of wet-leveling liquid disengaging feed tank by step 301 to step 305 Second liquid level signal fault judgment method in method processed in this method, judges whether that the second liquid level gauge can be received anti- Second liquid level signal of feedback；After the wet-leveling liquid control system runs preset duration, the second liquid level gauge feedback is obtained Second liquid level changing value of second liquid level signal in the preset duration；According to the preset duration, liquid delivery device Flow information and the feed tank tank bottom area, determine liquid level change threshold, wherein second liquid level signal, pre- If the tank bottom area of the flow information of duration, liquid delivery device and the feed tank is the wet-leveling liquid control system Parameter information；Compare the second liquid level changing value and the liquid level change threshold, according to comparison result, determines second liquid Whether position signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determines described the Two liquid level signals are without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, described is determined Two liquid level signals break down.If the second liquid level signal of the second liquid level gauge feedback can not be received, described second is determined Liquid level signal breaks down, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

Therefore, method disclosed by the embodiments of the present invention can be right by the parameter information of the wet-leveling liquid control system Whether second liquid level signal, which breaks down, is judged, thus in the reliability for promoting control wet-leveling liquid disengaging feed tank While, achieve the effect that the accuracy for promoting control wet-leveling liquid disengaging feed tank.

Fourth embodiment of the invention discloses the control method of another wet-leveling liquid disengaging feed tank, and the method is applied to Controller, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes the first liquid level Meter and second liquid level gauge.

It is the control method for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 5 Workflow schematic diagram the described method comprises the following steps：

Step 401, the first liquid level signal and the second liquid level signal are obtained, first liquid level signal is first liquid level The liquid level signal of feedback is counted, second liquid level signal is the liquid level signal of second liquid level gauge feedback.

In this step, liquid level sensor is provided in the first liquid level gauge and the second liquid level gauge, the liquid level passes Sensor is used to convert liquid level to liquid level signal, and the sensor can be touch sensor, such as magnetic level becomes Device, float ball type level transducer etc. are sent, it is not limited here.

Step 402, if controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the wet-leveling liquid The parameter information of control system, judges whether second liquid level signal breaks down.

Step 403, if second liquid level signal is without failure, first liquid level signal and second liquid Position signal determines whether first liquid level signal breaks down according to comparison result, wherein if first liquid level signal It is consistent with second liquid level signal, determine that first liquid level signal is without failure, if first liquid level signal and institute It is inconsistent to state the second liquid level signal, determines that first liquid level signal breaks down.

In this step, under the premise of determining that second liquid level signal is without failure, by comparing first liquid Position signal determines whether first liquid level signal breaks down according to comparison result with second liquid level signal, can be fast Speed determines whether first liquid level signal breaks down, and is promoting the same of the reliability of control wet-leveling liquid disengaging feed tank When, promote the smooth working efficiency of wet process.

Step 404, if first liquid level signal break down, by second liquid level signal control wet-leveling liquid into Feed tank out.

In this step, second liquid level signal is without failure and first liquid level signal occurs confirming therefore After barrier, the controller can control opening or closing for the liquid delivery device according to second liquid level signal, thus It controls wet-leveling liquid and passes in and out the feed tank.

In addition, if second liquid level signal is without failure, then first liquid level signal and second liquid Position signal according to comparison result after determining whether first liquid level signal breaks down, further includes：

If first liquid level signal is without failure, still through first liquid level signal control wet-leveling liquid disengaging Feed tank.

Part of the embodiment of the present invention discloses another wet-leveling liquid disengaging feed tank by step 401 to step 404 Control method in this method, obtains the first liquid level signal and the second liquid level signal first, and first liquid level signal is described the The liquid level signal of one liquidometer feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；If passing through First liquid level signal control wet-leveling liquid passes in and out feed tank, then according to the parameter information of the wet-leveling liquid control system, Judge whether second liquid level signal breaks down；If second liquid level signal is without failure, more described first Liquid level signal determines whether first liquid level signal breaks down according to comparison result with second liquid level signal, In, if first liquid level signal is consistent with second liquid level signal, determine that first liquid level signal is without failure, if First liquid level signal and second liquid level signal are inconsistent, determine that first liquid level signal breaks down；If described First liquid level signal breaks down, and passes in and out feed tank finally by second liquid level signal control wet-leveling liquid.

Therefore, method disclosed by the embodiments of the present invention can be supplied controlling wet-leveling liquid disengaging by the first liquid level signal Flow container, and when first liquid level signal failure, passing through the second liquid level signal controls wet-leveling liquid disengaging feed tank, solves In the control method of existing wet-leveling liquid disengaging feed tank, feed flow is passed in and out when needing to control wet-leveling liquid by liquid level signal When tank, the problem of will appear magnetic buoy bite due to magnetic double level gauge, magnetic buoy can not correctly reach liquid level control sometimes System switch causes liquid level control switch to transmit correct liquid level signal without normal direction controller, and addition pump and solution feed pump can not be normal Work causes control wet-leveling liquid disengaging feed tank to break down, and control wet-leveling liquid disengaging feed tank reliability is poor The problem of, it is lower so as to cause the smooth stability of wet process.

Fifth embodiment of the invention discloses the second liquid level signal in the control method of another wet-leveling liquid disengaging feed tank Fault judgment method is the controlling party for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 6 The work flow diagram of second liquid level signal breakdown judge in method, according to the parameter information of the wet-leveling liquid control system, judgement Whether second liquid level signal breaks down, and includes the following steps：

Step 501, judge whether that the second liquid level signal that the second liquid level gauge is fed back can be received, wherein if so, Execute step 502；If it is not, executing step 505.

Step 502, after the wet-leveling liquid control system runs preset duration, the second liquid level gauge feedback is obtained Second liquid level changing value of second liquid level signal in the preset duration.

Step 503, according to the preset duration, the tank bottom face of the flow information of liquid delivery device and the feed tank Product, determine liquid level change threshold, wherein second liquid level signal, preset duration, liquid delivery device flow information and The tank bottom area of the feed tank is the parameter information of the wet-leveling liquid control system.

Step 504, the second liquid level changing value and the liquid level change threshold, according to comparison result determination Whether the second liquid level signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determines Second liquid level signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, determine Second liquid level signal breaks down.

Step 505, if the second liquid level signal of the second liquid level gauge feedback can not be received, determine second liquid level Signal breaks down, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

In this step, second liquid level signal that can not receive second liquid level gauge feedback can be described the Situations such as second liquid level signal of two liquidometers feedback can not be read.For example, the reading no to scale model of the second liquid level gauge It encloses, causes the controller that can not receive the second liquid level signal of the second liquid level gauge feedback, then determine second liquid Position signal breaks down.

Part of the embodiment of the present invention discloses another wet-leveling liquid by step 501 to step 505 and passes in and out feed tank Second liquid level signal fault judgment method in control method in this method, judges whether that the second liquid level gauge can be received Second liquid level signal of feedback；After the wet-leveling liquid control system runs preset duration, it is anti-to obtain the second liquid level gauge Second liquid level changing value of second liquid level signal of feedback in the preset duration；According to the preset duration, liquid transmission dress The tank bottom area of the flow information and the feed tank set, determines liquid level change threshold, wherein second liquid level signal, The tank bottom area of preset duration, the flow information of liquid delivery device and the feed tank is the wet-leveling liquid control system Parameter information；Compare the second liquid level changing value and the liquid level change threshold, according to comparison result, determines described second Whether liquid level signal breaks down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, described in determination Second liquid level signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, described in determination Second liquid level signal breaks down.If the second liquid level signal of second liquid level gauge feedback can not be received, described the is determined Two liquid level signals break down, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

Therefore, method disclosed by the embodiments of the present invention, by the parameter information of the wet-leveling liquid control system, to described Whether the second liquid level signal, which breaks down, is judged, can promote the same of the reliability of control wet-leveling liquid disengaging feed tank When, achieve the effect that the accuracy for promoting control wet-leveling liquid disengaging feed tank.

Sixth embodiment of the invention discloses the first liquid level signal in the control method of another wet-leveling liquid disengaging feed tank Fault judgment method is the controlling party for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 7 The workflow schematic diagram of first liquid level signal breakdown judge in method is judging whether second liquid level signal breaks down Afterwards, if second liquid level signal breaks down, judge whether first liquid level signal breaks down, further include following step Suddenly：

Step 601, judge whether that the first liquid level signal that the first liquid level gauge is fed back can be received, wherein if so, Execute step 602；If it is not, executing step 605.

Step 602, after the wet-leveling liquid control system runs preset duration, the first liquid level gauge feedback is obtained First liquid level changing value of first liquid level signal in the preset duration.

Step 603, according to the preset duration, the tank bottom face of the flow information of liquid delivery device and the feed tank Product, determine liquid level change threshold, wherein first liquid level signal, preset duration, liquid delivery device flow information and The tank bottom area of the feed tank is the parameter information of the wet-leveling liquid control system.

Step 604, the first liquid level changing value determines institute according to comparison result with the liquid level change threshold State whether the first liquid level signal breaks down, wherein if the first liquid level changing value is consistent with the liquid level change threshold, really Fixed first liquid level signal is without failure；If the first liquid level changing value and the liquid level change threshold are inconsistent, really Fixed first liquid level signal breaks down.

Step 605, if the first liquid level signal of the first liquid level gauge feedback can not be received, determine first liquid level Signal breaks down, wherein first liquid level signal is the parameter information of the wet-leveling liquid control system.

In addition, judging whether first liquid level signal goes out in the parameter information according to the wet-leveling liquid control system After existing failure, further include：

If first liquid level signal breaks down, the controller outputting alarm information.

Part of the embodiment of the present invention discloses a kind of control of wet-leveling liquid disengaging feed tank by step 601 to step 605 The method of first liquid level signal breakdown judge in method processed, in this method, it is first determined whether first liquid can be received First liquid level signal of position meter feedback obtains first liquid level after the wet-leveling liquid control system runs preset duration Count first liquid level changing value of the first liquid level signal of feedback in the preset duration；Then, according to the preset duration, liquid The tank bottom area of the flow information of body transmitting device and the feed tank, determines liquid level change threshold, wherein first liquid Position signal, preset duration, the flow information of liquid delivery device and the feed tank tank bottom area be the wet-leveling liquid The parameter information of control system；Then, the first liquid level changing value and the liquid level change threshold are tied according to comparing Fruit, determines whether first liquid level signal breaks down, wherein if the first liquid level changing value and the liquid level change threshold Value is consistent, determines that first liquid level signal is without failure；Finally, if the first liquid level changing value and the liquid level change Threshold value is inconsistent, determines that first liquid level signal breaks down.If the first of the first liquid level gauge feedback can not be received Liquid level signal then determines that first liquid level signal breaks down, wherein first liquid level signal is the wet jetting piles hydraulic control The parameter information of system processed.

Seventh embodiment of the invention discloses a kind of control device of wet-leveling liquid disengaging feed tank, and described device is applied to control Device processed, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge And second liquid level gauge is a kind of control device for wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 8 Structural schematic diagram, described device comprises the following modules：

First obtains module 701, is for the first liquid level signal of acquisition and the second liquid level signal, first liquid level signal The liquid level signal of the first liquid level gauge feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

First judgment module 702, if passing in and out feed tank for controlling wet-leveling liquid by first liquid level signal, according to The parameter information of the wet-leveling liquid control system, judges whether first liquid level signal breaks down；

Second judgment module 703 controls system according to the wet-leveling liquid if breaking down for first liquid level signal The parameter information of system, judges whether second liquid level signal breaks down；

First control module 704 passes through second liquid level signal if without failure for second liquid level signal It controls wet-leveling liquid and passes in and out feed tank.

Part of the embodiment of the present invention discloses a kind of wet jetting piles by the first acquisition 701 to the first control module 704 of module Liquid passes in and out the control device of feed tank, in the device, obtains module 701 by first, obtains the first liquid level signal and the second liquid Position signal, first liquid level signal are the liquid level signal of first liquid level gauge feedback, and second liquid level signal is described The liquid level signal of second liquid level gauge feedback；By first judgment module 702, if controlling wet jetting piles by first liquid level signal Liquid passes in and out feed tank and judges whether first liquid level signal occurs according to the parameter information of the wet-leveling liquid control system Failure；By the second judgment module 703, if first liquid level signal breaks down, according to the wet-leveling liquid control system Parameter information, judge whether second liquid level signal breaks down；By the first control module 704, if for described the Two liquid level signals are without failure, control wet-leveling liquid by second liquid level signal and pass in and out feed tank.

The control device of disclosed a kind of wet-leveling liquid disengaging feed tank through the embodiment of the present invention, can pass through first Liquid level signal controls wet-leveling liquid and passes in and out feed tank, and when first liquid level signal failure, pass through the second liquid level signal It controls wet-leveling liquid and passes in and out feed tank, in the control device for solving existing wet-leveling liquid disengaging feed tank, when needs pass through When liquid level signal controls wet-leveling liquid disengaging feed tank, the problem of magnetic buoy bite will appear due to magnetic double level gauge, have When magnetism buoy can not correctly reach liquid level control switch, cause liquid level control switch to transmit correct liquid level without normal direction controller Signal, addition pump and solution feed pump can not work normally, and cause control wet-leveling liquid disengaging feed tank to break down, so as to cause wet The poor problem of the smooth stability of method.

Eighth embodiment of the invention discloses a kind of control device of wet-leveling liquid disengaging feed tank, and described device is applied to control Device processed, the controller are arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge And second liquid level gauge is the control dress for another wet-leveling liquid disengaging feed tank that the embodiment of the present application part provides referring to Fig. 9 The structural schematic diagram set, described device comprise the following modules：

Second obtains module 801, is for the first liquid level signal of acquisition and the second liquid level signal, first liquid level signal The liquid level signal of the first liquid level gauge feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

Third judgment module 802, if passing in and out feed tank for controlling wet-leveling liquid by first liquid level signal, according to The parameter information of the wet-leveling liquid control system, judges whether second liquid level signal breaks down；

4th judgment module 803, if without failure for second liquid level signal, first liquid level signal Determine whether first liquid level signal breaks down according to comparison result with second liquid level signal, wherein if described First liquid level signal is consistent with second liquid level signal, determines that first liquid level signal is without failure, if described first Liquid level signal and second liquid level signal are inconsistent, determine that first liquid level signal breaks down；

Second control module 804 passes through the second liquid level signal control if breaking down for first liquid level signal Wet-leveling liquid processed passes in and out feed tank.

Ninth embodiment of the invention discloses a kind of wet-leveling liquid control system, and the wet-leveling liquid control system includes control Device, first liquid level gauge and second liquid level gauge, the controller include the device as described in the 7th embodiment and the 8th embodiment；

The wet-leveling liquid control system further includes：Ball valve, for clearing up the wet-leveling liquid control system.

In the specific implementation, the application also provides a kind of computer storage medium, wherein the computer storage medium can store Have program, the program may include when executing the control method of wet-leveling liquid disengaging feed tank provided by the present application a kind of, device and Step some or all of in each embodiment of system.The storage medium can be magnetic disk, CD, read-only memory (English：Read-only memory, referred to as：ROM) or random access memory is (English：Random access memory, letter Claim：RAM) etc..

It is required that those skilled in the art can be understood that the technology in the embodiment of the present application can add by software The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present application substantially or Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the application or embodiment The method stated.

Same and similar part may refer to each other between each embodiment in this specification.Implement especially for device For example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring in embodiment of the method Explanation.

Above-described the application embodiment does not constitute the restriction to the application protection scope.

Claims

1. a kind of control method of wet-leveling liquid disengaging feed tank, which is characterized in that the method is applied to controller, the control Device processed is arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge and the second liquid level Meter, the method includes：

The first liquid level signal and the second liquid level signal are obtained, first liquid level signal is the liquid level of first liquid level gauge feedback Signal, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

If controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the ginseng of the wet-leveling liquid control system Number information, judges whether first liquid level signal breaks down；

If first liquid level signal breaks down, according to the parameter information of the wet-leveling liquid control system, described the is judged Whether two liquid level signals break down；

If second liquid level signal is without failure, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed tank.

2. the control method of wet-leveling liquid disengaging feed tank as described in claim 1, which is characterized in that according to the wet jetting piles The parameter information of liquid control system, judges whether first liquid level signal breaks down, including：

After the wet-leveling liquid control system runs preset duration, the first liquid level signal of the first liquid level gauge feedback is obtained The first liquid level changing value in the preset duration；

According to the tank bottom area of the preset duration, the flow information of liquid delivery device and the feed tank, liquid level is determined Change threshold, wherein first liquid level signal, preset duration, liquid delivery device flow information and the feed tank Tank bottom area be the wet-leveling liquid control system parameter information；

Compare the first liquid level changing value and the liquid level change threshold, according to comparison result, determines the first liquid level letter Number whether break down, wherein if the first liquid level changing value is consistent with the liquid level change threshold, determine first liquid Position signal is without failure；If the first liquid level changing value and the liquid level change threshold are inconsistent, first liquid is determined Position signal breaks down；

Alternatively,

If the first liquid level signal of the first liquid level gauge feedback can not be received, determine that event occurs in first liquid level signal Barrier, wherein first liquid level signal is the parameter information of the wet-leveling liquid control system.

3. the control method of wet-leveling liquid disengaging feed tank as described in claim 1, which is characterized in that judge second liquid Whether position signal breaks down, including：

After the wet-leveling liquid control system runs preset duration, the second liquid level signal of the second liquid level gauge feedback is obtained The second liquid level changing value in the preset duration；

According to the tank bottom area of the preset duration, the flow information of liquid delivery device and the feed tank, liquid level is determined Change threshold, wherein second liquid level signal, preset duration, liquid delivery device flow information and the feed tank Tank bottom area be the wet-leveling liquid control system parameter information；

Compare the second liquid level changing value and the liquid level change threshold, according to comparison result, determines the second liquid level letter Number whether break down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determine second liquid Position signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, second liquid is determined Position signal breaks down；

Alternatively,

If the second liquid level signal of the second liquid level gauge feedback can not be received, determine that event occurs in second liquid level signal Barrier, wherein second liquid level signal is the parameter information of the wet-leveling liquid control system.

4. a kind of control method of wet-leveling liquid disengaging feed tank, which is characterized in that the method is applied to controller, the control Device processed is arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge and the second liquid level Meter, the method includes：

If controlling wet-leveling liquid by first liquid level signal passes in and out feed tank, according to the ginseng of the wet-leveling liquid control system Number information, judges whether second liquid level signal breaks down；

If second liquid level signal is without failure, first liquid level signal and second liquid level signal, according to Comparison result, determines whether first liquid level signal breaks down, wherein if first liquid level signal and second liquid Position signal is consistent, determines that first liquid level signal is without failure, if first liquid level signal and second liquid level are believed It is number inconsistent, determine that first liquid level signal breaks down；

If first liquid level signal breaks down, wet-leveling liquid is controlled by second liquid level signal and passes in and out feed tank.

5. the control method of wet-leveling liquid disengaging feed tank as claimed in claim 4, which is characterized in that according to the wet jetting piles The parameter information of liquid control system, judges whether second liquid level signal breaks down, including：

Compare the second liquid level changing value and the liquid level change threshold, second liquid level signal is determined according to comparison result Whether break down, wherein if the second liquid level changing value is consistent with the liquid level change threshold, determine second liquid level Signal is without failure；If the second liquid level changing value and the liquid level change threshold are inconsistent, second liquid level is determined Signal breaks down；

Alternatively,

6. the control method of wet-leveling liquid disengaging feed tank as claimed in claim 4, which is characterized in that judging described second After whether liquid level signal breaks down, further include：

Alternatively,

7. a kind of control device of wet-leveling liquid disengaging feed tank, which is characterized in that described device is applied to controller, the control Device processed is arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge and the second liquid level Meter, described device include：

First obtains module, and for obtaining the first liquid level signal and the second liquid level signal, first liquid level signal is described the The liquid level signal of one liquidometer feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

First judgment module, if feed tank is passed in and out for controlling wet-leveling liquid by first liquid level signal, according to described wet The parameter information of smooth liquid control system, judges whether first liquid level signal breaks down；

Second judgment module, if breaking down for first liquid level signal, according to the ginseng of the wet-leveling liquid control system Number information, judges whether second liquid level signal breaks down；

First control module is controlled wet if without failure for second liquid level signal by second liquid level signal Leveling precision passes in and out feed tank.

8. a kind of control device of wet-leveling liquid disengaging feed tank, which is characterized in that described device is applied to controller, the control Device processed is arranged in wet-leveling liquid control system, and the wet-leveling liquid control system further includes first liquid level gauge and the second liquid level Meter, described device include：

Second obtains module, and for obtaining the first liquid level signal and the second liquid level signal, first liquid level signal is described the The liquid level signal of one liquidometer feedback, second liquid level signal are the liquid level signal of second liquid level gauge feedback；

Third judgment module, if feed tank is passed in and out for controlling wet-leveling liquid by first liquid level signal, according to described wet The parameter information of smooth liquid control system, judges whether second liquid level signal breaks down；

4th judgment module, if for second liquid level signal it is without failure, first liquid level signal with it is described Second liquid level signal determines whether first liquid level signal breaks down according to comparison result, wherein if first liquid Position signal is consistent with second liquid level signal, determines that first liquid level signal is without failure, if first liquid level is believed It is number inconsistent with second liquid level signal, determine that first liquid level signal breaks down；

Second control module is controlled wet flat if breaking down for first liquid level signal by second liquid level signal Whole liquid passes in and out feed tank.

9. a kind of wet-leveling liquid control system, which is characterized in that the wet-leveling liquid control system includes controller, the first liquid level Meter and second liquid level gauge, the controller include device as claimed in claim 7 or 8；

10. wet-leveling liquid control system as claimed in claim 9, which is characterized in that the wet-leveling liquid control system is also wrapped It includes：Ball valve, for clearing up the wet-leveling liquid control system.