CN113483853A

CN113483853A - Device and method for measuring level value of drain tank

Info

Publication number: CN113483853A
Application number: CN202110925535.XA
Authority: CN
Inventors: 张淼; 朱诗珉; 周丽娴
Original assignee: Siemens Power Plant Automation Ltd
Current assignee: Siemens Power Plant Automation Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-10-08

Abstract

The invention provides a device for measuring the liquid level value of a hydrophobic tank. The apparatus can include a receiving module configured to receive a current value from a transmitter; a memory module configured to store a lookup table indicating a mapping relationship between a current range of the transmitter and a liquid level range of the liquid level meter in which a lower value of the current range is mapped to an upper value of the liquid level range and an upper value of the current range is mapped to a lower value of the liquid level range; a processing module connected with the receiving module to receive the current value from the receiving module, a lookup table connected with the storage module to receive the current value from the storage module, and a processing module configured to determine a steam trap level value corresponding to the current value in the liquid level range based on the current value received from the receiving module and the lookup table received from the storage module. The liquid level height in the drain tank can be correctly measured when the transmitter is reversely installed on the outer side of the drain tank, the measurement flexibility is improved, and the efficiency of maintaining the generator set is improved.

Description

Device and method for measuring level value of drain tank

Technical Field

Embodiments of the present invention relate to the field of industry, and in particular, to an apparatus and method for measuring the level value of a hydrophobic tank.

Background

Currently, steam traps are utilized in various power stations to collect condensate formed from steam generated in power generating units. In order to monitor the liquid level in the drain tank in real time, a level gauge corresponding to the height of the drain tank may be installed outside the drain tank. The liquid level meter is connected with the transmitter, and data which is measured by the liquid level meter and is related to the liquid level height of the drain tank is transmitted to the device for measuring the liquid level height of the drain tank through the transmitter, so that the liquid level height in the drain tank can be monitored in real time.

As the demand for routine maintenance of power generating units increases, it is accordingly desirable to be able to further improve the techniques for measuring the level of liquid in the hydrophobic tank.

Disclosure of Invention

In view of the above-identified problems of the prior art, embodiments of the present invention provide an apparatus and method for measuring the level value of a hydrophobic tank.

In one aspect, embodiments of the present invention provide an apparatus for measuring a level value of a steam trap, comprising a receiving module configured to receive a current value from a transmitter; a memory module configured to store a lookup table indicating a mapping relationship between a current range of the transmitter and a level range of a level gauge, wherein in the mapping relationship a lower value of the current range maps to an upper value of the level range and an upper value of the current range maps to a lower value of the level range; and a processing module connected with the receiving module to receive the current value from the receiving module and connected with the storage module to receive the look-up table from the storage module, and configured to determine a trap level value corresponding to the current value in the liquid level range based on the current value received from the receiving module and the look-up table received from the storage module.

Through the device that this embodiment adopted, when the changer was installed in the drain tank outside by the reversal, can measure the liquid level height in the drain tank correctly, can improve the flexibility that is used for measuring the device of drain tank liquid level value to can improve the efficiency of carrying out routine maintenance to generating set.

In one embodiment, the storage module (104) is further configured to store one or more level alarm values.

Through the device that this embodiment adopted, when the changer was installed in the drain tank outside by the reversal, can realize coming to report to the police the suggestion to the liquid level condition in the drain tank as required to can improve the efficiency of carrying out routine maintenance to generating set.

In one embodiment, the apparatus further comprises: a first alarm module connected with the processing module to receive the canister level value from the processing module and connected with the storage module to receive the one or more level alarm values from the storage module, and configured to determine whether to generate first alarm information based on the canister level value received from the processing module and the one or more level alarm values received from the storage module.

In one embodiment, the memory module is further configured to store an upper value and a lower value of the current range of the transmitter.

Through the device that this embodiment adopted, when the changer was installed in the drain tank outside by the reversal, can assist the realization to come to report to the police the suggestion to the liquid level condition in the drain tank as required to can improve the efficiency of carrying out routine maintenance to generating set.

In one embodiment, the apparatus further comprises: a second alarm module connected with the receiving module to receive the current value from the receiving module and connected with the storage module to receive upper and lower values of the current range from the storage module, and configured to determine whether to generate second alarm information based on the current value received from the receiving module and the upper and lower values of the current range received from the storage module.

In one embodiment, the second alarm module is further configured to determine whether to generate the second alarm information based on the current value received from the receiving module, upper and lower limit values of the current measurement range received from the storage module, and a limit floating proportion.

Through the device that this embodiment adopted, when the changer was installed in the drain tank outside by the reversal, can realize coming to report to the police the suggestion to the liquid level condition in the drain tank as required in a flexible way to can improve the efficiency of carrying out routine maintenance to generating set.

In another aspect, embodiments of the present invention provide a method for measuring a level value of a steam trap, including receiving a current value from a transmitter; determining a trap level value corresponding to the current value in the level range based on the current value and a lookup table indicating a mapping relationship between a current range of the transmitter and a level range of a level gauge, wherein a lower value of the current range maps to an upper value of the level range and an upper value of the current range maps to a lower value of the level range.

By the method adopted by the embodiment, when the transmitter is reversely installed on the outer side of the drain tank, the liquid level height in the drain tank can be correctly measured, the flexibility of the device for measuring the liquid level value of the drain tank can be improved, and the efficiency of daily maintenance of the generator set can be improved.

In one embodiment, the method further comprises: determining whether to generate first alarm information based on the steam trap level value and one or more level alarm values.

By the method adopted by the embodiment, when the transmitter is reversely installed on the outer side of the drain tank, the alarm prompt of the liquid level condition in the drain tank can be realized according to the requirement, and the efficiency of daily maintenance of the generator set can be improved.

In one embodiment, the method further comprises: and determining whether to generate second alarm information based on the current value and the upper limit value and the lower limit value of the current range.

Through the method adopted by the embodiment, when the transmitter is reversely installed on the outer side of the drain tank, the alarm prompt of the liquid level condition in the drain tank can be assisted to be realized according to the requirement, and the efficiency of daily maintenance of the generator set can be improved.

In one embodiment, the method further comprises: and determining whether to generate the second alarm information based on the current value, the upper limit value and the lower limit value of the current range and the limit value floating proportion.

By the method adopted by the embodiment, when the transmitter is reversely installed on the outer side of the drain tank, alarm prompt on the liquid level condition in the drain tank can be flexibly realized according to needs, and the efficiency of daily maintenance of the generator set can be improved.

In another aspect, embodiments of the present invention provide a computing device comprising: at least one processor; a memory in communication with the at least one processor having executable code stored thereon, which when executed by the at least one processor causes the at least one processor to implement the above-described method.

In another aspect, embodiments of the invention provide a machine-readable storage medium storing executable code that, when executed, causes a machine to perform the above-described method.

Drawings

The foregoing and other objects, features and advantages of embodiments of the invention will be apparent from the following more particular descriptions of embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like elements throughout.

FIG. 1 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to one embodiment.

FIG. 2 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to another embodiment.

FIG. 3 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to another embodiment.

FIG. 4 is a flow chart of a method for measuring a hydrophobe level value according to one embodiment.

FIG. 5 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment.

FIG. 6 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment.

FIG. 7 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment.

FIG. 8 is a hardware block diagram of a computing device for measuring a level value according to one embodiment.

List of reference numerals:

100: device for measuring the position of a moving object

102: the receiving module 104: memory module

106: processing module

200: the device 208: first alarm module

300: the device 310: second alarm module

400: method of producing a composite material

410: receiving current values from a transmitter

420: determining a trap level value corresponding to the current value in the level range based on the current value and a lookup table indicating a mapping relationship between a current range of the transmitter and a level range of a level gauge, wherein a lower limit value of the current range maps to an upper limit value of the level range and an upper limit value of the current range maps to a lower limit value of the level range

500: method of producing a composite material

530: determining whether to generate first alarm information based on the steam trap level value and one or more level alarm values

600: method of producing a composite material

640: determining whether to generate second alarm information based on the current value and the upper limit value and the lower limit value of the current range

700: method of producing a composite material

740: determining whether to generate the second alarm information based on the current value, the upper limit value and the lower limit value of the current range, and the limit value floating ratio

800: computing device

802: the processor 804: memory device

806: the communication interface 808: bus line

Detailed Description

The subject matter described herein will now be discussed with reference to various embodiments. It should be understood that these examples are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and are not intended to limit the scope, applicability, or example set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the claims. Various embodiments may omit, replace, or add various procedures or components as desired.

As used herein, the term "include" and variations thereof mean open-ended terms in the sense of "including, but not limited to. The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first," "second," and the like may refer to different or the same object. Other definitions, whether explicit or implicit, may be included below, and a definition of a term is consistent throughout the specification unless the context clearly dictates otherwise.

Currently, the installation location of the steam trap of the generator set may span the floor and the transmitter is installed forward outside the steam trap, i.e. the output of the transmitter is at the lower end location of the steam trap. For example, the steam trap is installed across floors, and the output of the transmitter, which is correspondingly installed outside the steam trap, is located between upper and lower floors. When daily debugging and instrument detection are required to be carried out on the transmitter, if a worker stands on a lower floor for operation, a herringbone ladder is required to be prepared for ascending and a safety rope is required to be prepared for operation; and if the worker stands on the upper floor for operation, the worker needs to bend down to perform the operation. However, measuring and disassembling the transmitter in both ways is inconvenient, which affects the efficiency of routine maintenance of the generator set.

If the changer is installed in the drain tank outside by the reversal, be about to the output of changer install in the upper end position department of drain tank, the staff will be able to debug and measure the changer more conveniently, but the reversal installation changer can lead to current device can't correctly measure the liquid level height in the drain tank. In other words, existing devices only support measuring the level of liquid within the tank when the transmitter is mounted forward outside the tank.

In view of this, embodiments of the present invention provide an improved apparatus for measuring the level of liquid in a hydrophobic tank. By utilizing the device, when the transmitter is reversely installed on the outer side of the drainage tank, the liquid level height in the drainage tank can be correctly measured, so that the liquid level height in the drainage tank can be more flexibly measured by utilizing the device.

Various embodiments will be described in detail below with reference to the accompanying drawings.

The apparatus of the present invention may be performed by an apparatus for implementing a Distributed Control System (DCS). The outside of the steam trap can be provided with a liquid level meter and a transmitter connected with the liquid level meter, and the transmitter can transmit analog data which is measured by the liquid level meter and is related to the liquid level height of the steam trap to the device in the form of current value. The device can be coupled to the transmitter, receive data from the transmitter, and process the received data.

In an embodiment, the liquid level meter may for example be a magnetic float liquid level meter, also called a magnetostrictive liquid level meter. In other embodiments, the gauge may be other contact gauges or non-contact gauges. The working principle of the magnetic float level meter is taken as an example for explanation, but the applicable application scene of the invention is not limited to the above.

In the case of a magnetic float level gauge, since the level gauge is connected to the drain tank as a communicating vessel, the level height within the level gauge will vary with the level height within the drain tank. A magnetic float is arranged in the liquid level meter, the position of the magnetic float changes along with the change of the liquid level height in the liquid level meter, and therefore the height of the position of the magnetic float is the liquid level height in the drainage tank.

When the liquid level meter is connected with a transmitter which is arranged outside the drain tank in the forward direction, the liquid level height in the liquid level meter is reflected through data output by the transmitter. A series of resistors and a reed switch used as a switch are connected in series in the circuit of the transmitter. The magnetic float in the liquid level meter can trigger the reed switch corresponding to the current position of the magnetic float in the circuit of the transmitter to be closed, and the reed switch is closed to enable corresponding partial resistance in the circuit of the transmitter to be short-circuited, namely, the reed switch is connected with corresponding resistance to divide voltage. When the magnetic float is located at different positions in the liquid level meter, the reed pipes at different positions are correspondingly closed, so that the resistance in the circuit of the transmitter is different, and the current value output by the transmitter can reflect the height of the position of the magnetic float. Because the height of the position of the magnetic float is the liquid level height in the drainage tank, the current value output by the transmitter can reflect the liquid level height in the drainage tank.

However, when the level gauge is connected to the transmitter installed in the reverse direction outside the drain tank, the reed switch that originally corresponds to the higher liquid level position and makes the transmitter output a larger current is now located at the lower position outside the drain tank, and the reed switch that originally corresponds to the lower liquid level position and makes the transmitter output a smaller current is now located at the higher position outside the drain tank. In this case, when the magnetic float is located at a lower position in the liquid level meter, the reed pipe which is closed correspondingly can cause a larger current output by the transmitter, so that the device for measuring mistakenly assumes that the liquid level height in the current drainage tank is higher; when the magnetic float is located at a higher position in the liquid level meter, the reed switch which is correspondingly closed can cause a smaller current output by the transmitter, so that the device for measuring mistakenly assumes that the liquid level height in the current drainage tank is lower, and the liquid level height in the drainage tank cannot be correctly measured.

FIG. 1 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to one embodiment. For example, the apparatus 100 shown in fig. 1 may include a receiving module 102, a storage module 104, and a processing module 106.

As shown in FIG. 1, the receive module 102 is configured to receive current values from the transmitter. For example, the transmitter can send the generated current value to the receive module 102 of the apparatus 100 so that the receive module 102 can receive the current value from the transmitter.

The memory module 104 is configured to store a lookup table indicating a mapping between the current range of the transmitter and the liquid level range of the liquid level meter, wherein a lower value of the current range maps to an upper value of the liquid level range and an upper value of the current range maps to a lower value of the liquid level range in the mapping.

For example, a lookup table indicating a mapping between a current range of the transmitter and a level range of the level gauge can be as shown in Table 1. The current range of the transmitter can be 4-20mA, and the liquid level range of the liquid level meter can be 0-600 mm. The lower value of the current range of the transmitter, 4mA, is mapped to the upper value of the liquid level range, 600mm, and the upper value of the current range, 20mA, is mapped to the lower value of the liquid level range, 0 mm. In the mapping relation, the larger the current value in the current range is, the smaller the corresponding drain tank liquid level value in the liquid level range is; the smaller the current value in the current range is, the larger the corresponding drain tank liquid level value in the liquid level range is.

The mapping shown in table 1 is merely an example, and the specific ranges of current range, liquid level range and data interval size in the range are not limited thereto.

Current value (mA)	4	8	12	16	20
						Level value of steam trap (mm)	600	450	300	150	0

TABLE 1

The receiving module 102 and the storage module 104 are connected to the processing module 106, and the processing module 106 receives the current value from the receiving module 102 and the look-up table from the storage module 104. The processing module is configured to determine a trap level value corresponding to the current value in the liquid level range based on the current value received from receiving module 102 and the look-up table received from storage module 104. For example, after receiving module 102 receives the current value from the transmitter, processing module 106 performs a lookup in a lookup table stored in storage module 104 according to the current value to determine a steam trap level value corresponding to the current value. The trap level value reflects the current level height within the trap.

It is because the apparatus 100 uses the lookup table shown in table 1 to determine the level value of the canister so that the apparatus 100 can still correctly measure the level of the liquid in the canister when the transmitter is installed in reverse outside the canister.

For ease of understanding, the following description is made in conjunction with specific examples. It should be understood that the following examples are intended only to assist those skilled in the art in better understanding the apparatus of the present invention, and do not limit the scope of the apparatus.

FIG. 2 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to another embodiment. For example, the apparatus 200 includes a receiving module 102, a storage module 104, a processing module 106, and a first alert module 208. In particular, the implementation of the receiving module 102, the storage module 104 and the processing module 106 in fig. 2 can refer to the implementation of the receiving module 102, the storage module 104 and the processing module 106 shown in fig. 1.

In one embodiment, the storage module 104 is further configured to store one or more level alarm values. For example, one or more dedicated level alarm value function blocks may be provided. For example, the memory module 104 may store two liquid level alarm values 150mm and 450mm in advance. It is understood that the liquid level alarm values 150mm and 450mm in the present embodiment are only examples, the number of specific liquid level alarm values is not limited to two, and the specific liquid level alarm values are not limited to 150mm and 450 mm.

As shown in FIG. 2, the processing module 106 and the memory module 104 are coupled to a first alarm module 208, and the first alarm module 208 receives the steam trap level value from the processing module 106 and one or more level alarm values from the memory module 104. First alarm module 208 is configured to determine whether to generate first alarm information based on the canister level value received from processing module 106 and the one or more level alarm values received from storage module 104. For example, processing module 106 sends the determined steam trap level value to first alarm module 208, storage module 104 sends the stored one or more level alarm values to first alarm module 208, and first alarm module 208 may be one or more dedicated level alarm value function modules.

In one embodiment, assuming two level alarm values, 150mm and 450mm respectively, sent by the storage module 104 to the first alarm module 208, the first alarm module 208 compares the canister level value received from the processing module 106 with the two level alarm values, respectively, and generates the first alarm message in one or more of the conditions less than 150mm, equal to 150mm, greater than 150mm, and less than 450mm, equal to 450mm, or greater than 450mm, as desired. Therefore, the device 200 can realize the alarm prompt of the liquid level height in the current drainage tank, and is convenient for workers to maintain the generator set.

Through the device that this embodiment adopted, when the changer was installed in the drain tank outside by the reversal, can realize coming the warning suggestion of reporting to the police to the liquid level height in the drain tank as required to can improve the efficiency of carrying out routine maintenance to generating set.

FIG. 3 is a schematic block diagram of an apparatus for measuring a hydrophobe level value according to another embodiment. As shown in FIG. 3, the apparatus 300 includes a receiving module 102, a storage module 104, a processing module 106, and a first alarm module 208 and a second alarm module 310. Specifically, the implementation manners of the receiving module 102, the storage module 104 and the processing module 106 in fig. 3 may refer to the implementation manners of the receiving module 102, the storage module 104 and the processing module 106 shown in fig. 1 or fig. 2, and the implementation manner of the first alarm module 208 in fig. 3 may refer to the implementation manner of the first alarm module 208 shown in fig. 2.

In one embodiment, the memory module 104 is further configured to store an upper value and a lower value of the current range of the transmitter. For example, the upper limit value of the current measuring range is 20mA and the lower limit value is 4mA as shown in Table 1. It is understood that the upper and lower current ranges of 20mA and 4mA in this embodiment are exemplary only, and that the upper and lower current ranges of a particular transmitter are not limited thereto.

As shown in fig. 3, the receiving module 102 and the storage module 104 are connected to a second alarm module 310, and the second alarm module 310 receives the current value from the receiving module 102 and the upper limit value and the lower limit value of the current range from the storage module 104. The second alarm module 310 is configured to determine whether to generate second alarm information based on the current value received from the receiving module 102 and the upper and lower values of the current range received from the storage module 104.

For example, the receiving module 102 sends the received current value to the second alarm module 310, and the storage module 104 sends the stored upper and lower values of the current measurement range to the second alarm module 310. The second alarm module 310 compares the current value received from the receiving module 102 with the upper limit value and the lower limit value of the current range received from the storage module 104, respectively.

If the second alarm module 310 determines that the current value is smaller than the lower limit value of the current range or larger than the upper limit value of the current range, it is determined that the second alarm information is generated. Therefore, the device 300 can determine that the drain tank is currently in an abnormal working state, for example, the device may be in a failure, the circuit of the transmitter is in a problem or the drain tank is anhydrous, and the like, so that the device plays a role in alarming and prompting the working state of the drain tank, and further can be convenient for a worker to maintain a generator set.

In one embodiment, the second alert information may be a quality signal.

In one embodiment, the second alarm module 310 is further configured to determine whether to generate the second alarm information based on the current value received from the receiving module 102, the upper and lower values of the current range received from the storage module 104, and the floating ratio of the limits. For example, the limit float ratio may be 10% or-10%. It is understood that 10% or-10% is only an example of the limit floating ratio, and the specific numerical value is not limited thereto.

In the present embodiment, the criterion for determining whether to generate the second alarm information is not limited to whether it is smaller than the lower limit value of the current range or larger than the upper limit value of the current range, and the floating upper limit value and/or the floating lower limit value may also be calculated based on a preset limit value floating ratio. Taking the limit value floating proportion of 10% or-10% as an example, assuming that the upper limit value of the current range is 20mA, the value between 18 mA and 22mA can be taken as the floating upper limit value, and similarly assuming that the lower limit value of the current range is 4mA, the value between 2mA and 6mA can be taken as the floating lower limit value. This calculation method is merely an example, and the specific calculation method is not limited thereto.

Thus, the second alarm module 310 may select values within the floating upper limit value and the floating lower limit value according to a preset rule, and compare the current value received by the receiving module 102 with the floating upper limit value and the floating lower limit value, respectively, to determine whether to generate the second alarm information.

Through the device that this embodiment adopted, when the changer was installed in the outside of drain tank in the reverse direction, can realize coming to report to the police the suggestion to the liquid level condition in the drain tank as required in a flexible way to can improve the efficiency of carrying out routine maintenance to generating set.

The apparatus 100-300 can be implemented by hardware, software, or a combination of hardware and software. For example, when implemented in software, the apparatus 100-300 may be formed by a processor of a device in which the processor reads corresponding executable code from a memory (e.g., a non-volatile memory) into a memory for execution.

FIG. 4 is a flow chart of a method for measuring a hydrophobe level value according to one embodiment. The method illustrated in fig. 4 may be performed by the apparatus 100 as described with reference to fig. 1, and will not be described herein again.

In step 410, a current value is received from a transmitter. For example, device 100 can receive a current value from a transmitter.

In step 420, a trap level value corresponding to the current value in the level range is determined based on the current value and a lookup table indicating a mapping relationship between the current range of the transmitter and the level range of the level gauge, wherein a lower limit value of the current range maps to an upper limit value of the level range and an upper limit value of the current range maps to a lower limit value of the level range. For example, apparatus 100 can determine a steam trap level value corresponding to the current value in the level range based on the current value and a lookup table indicating a mapping between the current range of the transmitter and the level range of the level gauge.

FIG. 5 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment. The method illustrated in fig. 5 may be performed by the apparatus 200 as described with reference to fig. 2, and will not be described herein again.

The implementation of steps 410-420 as shown in fig. 5 can be referred to the implementation of steps 410-420 as shown in fig. 4.

In step 530, it is determined whether to generate a first alert message based on the canister level value and the one or more level alert values. For example, apparatus 200 may determine whether to generate a first alert message based on a canister level value and one or more level alert values.

By the method adopted by the embodiment, when the transmitter is reversely installed on the outer side of the drain tank, the alarm prompt of the liquid level in the drain tank can be realized according to the requirement, and the efficiency of daily maintenance of the generator set can be improved.

FIG. 6 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment. The method illustrated in fig. 6 may be performed by the apparatus 300 as described with reference to fig. 3, and will not be described herein again.

The implementation of

steps

410 and 420 and 530 as shown in FIG. 6 can be referred to the implementation of

steps

410 and 420 and 530 in FIG. 4 and 5, respectively.

In step 640, it is determined whether to generate second alarm information based on the current value and the upper and lower limit values of the current range. For example, the apparatus 300 may determine whether to generate the second alarm information based on the current value and the upper and lower limit values of the current range.

It is understood that the present embodiment does not limit the sequence between step 640 and step 420.

In another embodiment, step 530 may be an optional step in the method shown in FIG. 6.

FIG. 7 is a flow chart of a method for measuring a hydrophobe level value according to another embodiment. The method illustrated in fig. 7 may be performed by the apparatus 300 as described with reference to fig. 3, and will not be described herein again.

The implementation of

steps

410 and 420 and 530 as shown in FIG. 7 can be referred to the implementation of

steps

410 and 420 and 530 in FIG. 4 and 5, respectively.

In step 740, it is determined whether to generate the second alarm information based on the current value, the upper and lower limit values of the current range, and the limit floating ratio. For example, apparatus 300 may determine whether to generate the second alarm information based on the current value, the upper and lower limit values of the current range, and a limit floating ratio.

It is understood that the present embodiment does not limit the sequence between step 740 and step 420.

In another embodiment, step 530 may be an optional step in the method illustrated in FIG. 7.

FIG. 8 is a hardware block diagram of a computing device for measuring a level value according to one embodiment. As shown in fig. 8, computing device 800 may include at least one processor 802, memory 804, and communication interface 806, and the at least one processor 802, memory 804, and communication interface 806 are connected together via a bus 808. The at least one processor 802 executes at least one executable code (i.e., the elements described above as being implemented in software) stored or encoded in the memory 804.

In one embodiment, the executable code stored in the memory 804, when executed by the at least one processor 702, causes the computing device to implement the various processes described above in connection with fig. 4-7.

Computing device 800 may be implemented in any suitable form known in the art, including, for example, but not limited to, a desktop computer, a laptop computer, a smartphone, a tablet computer, a consumer electronics device, a wearable smart device, and so forth.

Embodiments of the present specification also provide a machine-readable storage medium. The machine-readable storage medium may store executable code that, when executed by a machine, causes the machine to implement particular processes of the method embodiments described above with reference to fig. 4-7.

For example, a machine-readable storage medium may include, but is not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Electrically-Erasable Programmable Read-Only Memory (EEPROM), Static Random Access Memory (SRAM), a hard disk, flash Memory, and so forth.

It should be understood that the various embodiments of the present invention have been described in a progressive manner, and that like or similar elements may be referred to one another, with each embodiment being described with emphasis instead being placed upon illustrating the differences between the other embodiments.

The apparatus structures described in the above embodiments may be physical structures or logical structures, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by a plurality of physical entities respectively, or some components in a plurality of independent devices may be implemented together.

The term "exemplary" used throughout this disclosure means "serving as an example, instance, or illustration," and does not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described embodiments.

Although the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the embodiments of the present disclosure are not limited to the details of the embodiments, and various modifications may be made to the apparatus of the embodiments of the present disclosure within the technical spirit of the embodiments of the present disclosure, and these modifications are within the scope of the embodiments of the present disclosure.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus (100) for measuring the level value of a hydrophobic tank, comprising:

a receiving module (102), the receiving module (102) configured to receive a current value from a transmitter;

a memory module (104), the memory module (104) configured to store a lookup table indicating a mapping relationship between a current range of the transmitter and a liquid level range of a liquid level meter, wherein in the mapping relationship a lower value of the current range maps to an upper value of the liquid level range and an upper value of the current range maps to a lower value of the liquid level range; and

a processing module (106), the processing module (106) being connected with the receiving module (102) to receive the current values from the receiving module (102), and the processing module (106) being connected with the memory module (104) to receive the look-up table from the memory module (104), and the processing module (106) being configured to determine a hydrophobic tank level value corresponding to the current values in the liquid level range based on the current values received from the receiving module (102) and the look-up table received from the memory module (104).

2. The apparatus (100) for measuring a hydrophobe level value according to claim 1, characterized in that said storage module (104) is further configured to store one or more level alarm values.

3. The device (200) for measuring the level value of a hydrophobic tank according to claim 2, further comprising:

a first alarm module (208), the first alarm module (208) coupled to the processing module (106) to receive the trap level value from the processing module (106), and the first alarm module (208) coupled to the storage module (104) to receive the one or more level alarm values from the storage module (104), and the first alarm module (208) configured to determine whether to generate first alarm information based on the trap level value received from the processing module (106) and the one or more level alarm values received from the storage module (104).

4. The apparatus (100) for measuring a hydrophobic tank level value according to any of claims 1-3, characterized in that said memory module (104) is further configured to store an upper and a lower value of said current range of said transmitter.

5. The device (300) for measuring the level value of a hydrophobic tank according to claim 4, further comprising:

a second alarm module (310), the second alarm module (310) being connected with the receiving module (102) to receive the current value from the receiving module (102), and the second alarm module (310) being connected with the storage module (104) to receive upper and lower values of the current measurement range from the storage module (104), and the second alarm module (310) being configured to determine whether to generate second alarm information based on the current value received from the receiving module (102) and the upper and lower values of the current measurement range received from the storage module (104).

6. The apparatus (300) for measuring a hydrophobic tank level value according to claim 5, characterized in that said second alarm module (310) is further configured to determine whether to generate said second alarm message based on said current value received from said receiving module (102), upper and lower values of said current range received from said storage module (104) and a limit floating ratio.

7. A method (400) for measuring a hydrophobe level value, comprising:

receiving a current value from a transmitter (410); and

determining a trap level value corresponding to the current value in the level range based on the current value and a lookup table indicating a mapping between a current range of the transmitter and a level range of a level meter, wherein a lower value of the current range maps to an upper value of the level range and an upper value of the current range maps to a lower value of the level range (420).

8. The method (500) for measuring a hydrophobic tank level value according to claim 7, further comprising:

determining whether to generate first alert information (530) based on the canister level value and one or more level alert values.

9. The method (600) for measuring a hydrophobic tank level value according to claim 7 or 8, further comprising:

whether to generate second alarm information (640) is determined based on the current value and the upper and lower limit values of the current range.

10. The method (700) for measuring the level value of a hydrophobic tank according to claim 7 or 8, further comprising:

determining whether to generate the second alarm information based on the current value, the upper and lower limit values of the current measurement range, and a limit floating ratio (740).

11. A computing device, comprising:

at least one processor;

a memory in communication with the at least one processor having executable code stored thereon, which when executed by the at least one processor causes the at least one processor to implement the method of any one of claims 7 to 10.

12. A machine readable storage medium storing executable code that when executed causes a machine to perform the method of any of claims 7 to 10.