TW201806656A - Pressure detection device, filter monitor system, filter effect detection method and method for determine whether disassemble filter - Google Patents

Abstract

A pressure detection device includes a base, a first pressure detector and a second pressure detector. The base has a first communicating tube and a second communicating tube. The first pressure detector is disposed in the first communicating tube for detecting the pressure of the first communicating tube, so as to obtain a first pressure value. The second pressure detector is disposed in the second communicating tube for detecting the pressure of the second communicating tube, so as to obtain a second pressure value. The two ends of the first communicating tube are utilized for connecting a fluid temporary-storage container and a fluid inlet respectively. The two ends of the second communicating tube are utilized for connecting the fluid temporary-storage container and a fluid outlet respectively.

Description

Pressure detection device, filter monitoring system, method for detecting filtering efficiency of filter, and method for detecting whether filter can be removed

The present invention relates to a pressure detection device, in particular to a pressure detection device applied between a fluid transfer pipeline and a filter, and a filter monitoring system including the foregoing pressure detection device, a related filter performance detection method, and detection of whether Method of detachable filter.

In the general production and process flow, fluid raw materials, cleaning agents and other fluids used in production and process are usually transported to various equipments through pipelines for processing, and even automated transportation is used to improve production efficiency. Take the semiconductor process as an example, most processes must use special fluids, such as photoresist, developer, etchant, deionized water, etc., and the fluid usually passes through the fluid temporary storage container during the transportation process, such as Filter to ensure the cleanliness of the fluid.

With the development of today's technology, the size of most products (such as electronic products and electronic components) continues to shrink. Therefore, any problems or minor defects in various equipment may affect the quality of the product, such as when the filter performance is reduced. As a result, the purity of the fluid will be affected and process defects will occur. The traditional maintenance method is to regularly replace or check the equipment, but this method can not immediately grasp the status of the equipment performance, nor can it rule out unexpected problems. In addition, when performing equipment maintenance or replacing the device, the fluid transportation pipeline must be separated from the equipment. However, since the fluid transportation needs to be propelled by pressure, the fluid in the equipment or pipeline will have a residual pressure, so that When the maintenance personnel separates the pipeline for fluid transportation from the equipment, fluid splashes often occur. Therefore, how to improve the safety of the maintenance process is also one of the problems to be solved by the industry today.

One of the objects of the present invention is to provide a pressure detection device, which obtains the pressure value of a fluid conveying line through the measurement of a pressure sensor, and applies the pressure value to a filter monitoring system and a method for detecting the filtering efficiency of a filter In order to monitor the performance of the filter, it is also applied to the method of detecting whether the filter can be removed to improve the safety of the process of maintaining the filter.

An embodiment of the present invention provides a pressure detection device, including a base, a first pressure sensor, and a second pressure sensor. The base has a first communication tube and a second communication tube. The first pressure sensor is disposed in the first communication tube and is used to measure the pressure of the first communication tube to obtain a first pressure value and a second pressure. The sensor is disposed in the second communication pipe and is used to measure the pressure of the second communication pipe to obtain a second pressure value. Two ends of the first communication pipe are respectively used to connect the fluid temporary storage container and the fluid input pipe. The two ends of the second communication pipe are respectively used to connect the fluid temporary storage container and the fluid output pipe.

Another embodiment of the present invention provides a filter monitoring system, including a filter, a fluid inlet, a fluid outlet, and a pressure detection device. The filter includes a container portion and a fixing portion. The container portion has an opening. The fixing portion is disposed on the opening of the container portion and contacts the container portion and covers the opening. The fluid input pipe and the fluid output pipe are arranged on the fixed part, and the fluid input pipe and the fluid output pipe are respectively communicated with the openings of the container section. The fluid input pipe is used to transport fluid to the filter, and the fluid output pipe is used to Fluid is delivered out of the filter. The pressure detection device is disposed on the fixed portion, and the pressure detection device includes a first pressure sensor and a second pressure sensor. The first pressure sensor is used to measure the pressure of the fluid input pipe to obtain a first pressure value. The two pressure sensors are used to measure the pressure of the fluid output tube to obtain a second pressure value.

Another embodiment of the present invention provides a method for detecting a filtering efficiency of a filter, including the following steps. Provide the above-mentioned filter monitoring system. The first pressure sensor of the filter monitoring system is used to measure the first pressure value, and the second pressure sensor of the filter monitoring system is used to measure the second pressure value. The pressure value and the second pressure value determine whether the filtering performance of the filter of the filter monitoring system is normal.

Another embodiment of the present invention provides a method for checking whether a filter is removable, including the following steps. The above-mentioned filter monitoring system is provided, and the filter monitoring system further includes a fluid discharge pipe provided on the fixed part. The pressure detection device of the filter monitoring system further includes a third pressure sensor for measuring the pressure of the fluid discharge pipe. Pressure to obtain a third pressure value, wherein the fluid discharge pipe is used to transport fluid out of the filter. Then, stop sending fluid to the filter through the fluid input pipe of the filter monitoring system, and judge whether the filter can be removed according to the first pressure value, the second pressure value and the third pressure value. When the first pressure value and the second pressure When the pressure difference between the pressure value and the third pressure value with respect to the ambient pressure is 0, the filter can be disassembled, and when the pressure difference between the first pressure value, the second pressure value, and the third pressure value with respect to the environmental pressure is not 0 , Then use the fluid discharge pipe to remove the fluid until the residual pressure is eliminated, and then remove the filter.

Since the pressure detection device of the present invention includes a pressure sensor, the pressure value of the fluid transportation pipeline communicating with the fluid temporary storage container can be obtained through the measurement of the pressure sensor. Similarly, since the filter monitoring system of the present invention includes a pressure sensor, the pressure value of the fluid delivery pipeline connected to the filter can be understood by the pressure sensor, and the filtering by the detection filter of the present invention can be performed by the pressure sensor. The efficiency method uses the pressure value measured by the pressure sensor to monitor the filtering performance of the filter. In addition, the method for detecting whether the filter can be detached by the method of the present invention uses the pressure value measured by the pressure sensor to Determine whether the fluid has a residual pressure, and then confirm whether the filter can be removed to improve the safety of the filter maintenance process.

In order to make a person skilled in the art who is familiar with the technical field of the present invention further understand the present invention, the preferred embodiments of the present invention are enumerated below, and in conjunction with the accompanying drawings, the constitutional content of the present invention and the desired effects are described in detail. .

Please refer to FIG. 1. FIG. 1 is a three-dimensional schematic diagram of an embodiment of the pressure detection device of the present invention. As shown in FIG. 1, the pressure detection device 100 in this embodiment includes a base 110, a first pressure sensor PD1 and a second pressure sensor PD2. The base 110 has a first communication pipe 112 and a second communication pipe 114. Alternatively, the base 110 may further have a third communication pipe 116, and the first communication pipe 112, the second communication pipe 114, and The third communication pipe 116 is used to connect a fluid temporary storage container and a fluid transfer pipeline, for example, two ends of the first communication pipe 112 can be used to connect a fluid temporary storage container and a fluid input pipe ( fluid inlet), two ends of the second communication pipe 114 may be respectively used to connect the fluid temporary storage container and a fluid outlet, and two ends of the third communication pipe 116 may be respectively used to connect the fluid temporary storage The container and a fluid vent (vent) pipe, but not limited to this, it should be noted that the above fluid input pipe system is used to transport fluid to the fluid temporary storage container, and the fluid output pipe and the fluid discharge pipe system are used to transport fluid Pump out the fluid storage container. In this embodiment, the first pressure sensor PD1 is disposed in the first communication pipe 112 to measure the pressure in the first communication pipe 112 to obtain a first pressure value, and the second pressure sensor PD2 It is arranged in the second communication pipe 114 to measure the pressure in the second communication pipe 114 to obtain the second pressure value. Optionally, the pressure detection device 100 in this embodiment may further include a third pressure sensor. PD3, and the third pressure sensor PD3 is disposed in the third communication pipe 116 to measure the pressure of the third communication pipe 116 to obtain a third pressure value. In other words, the first pressure sensor PD1, the first pressure sensor The two pressure sensors PD2 and the third pressure sensor PD3 can measure the pressures of the fluid transport lines connected to the first communication pipe 112, the second communication pipe 114, and the third communication pipe 116, respectively.

In this embodiment, the material of the base 110 of the pressure detection device 100 may be Teflon to prevent the fluid being transported from damaging the base 110, but is not limited thereto. In addition, since the first pressure sensor PD1, the second pressure sensor PD2, and the third pressure sensor PD3 are disposed in the first communication pipe 112, the second communication pipe 114, and the third communication pipe 116, respectively, The size selection of the pressure sensor must be smaller than the diameter of the connecting pipe. In addition, in this embodiment, the fluid temporary storage container may be a filter, such as a chemical filter in a semiconductor process, for filtering a fluid (such as a chemical agent), and improving the cleanliness and quality of the fluid. This is limited.

Please refer to FIG. 2, which illustrates a schematic diagram of an embodiment of the filter monitoring system of the present invention. As shown in FIG. 2, the filter monitoring system 200 of this embodiment includes a filter 210, a fluid input pipe 222, a fluid output pipe 224, and a pressure detection device 100. The structure of the above components and their relative settings will be introduced in order below. relationship. The filter 210 includes a container portion 212 and a fixing portion 214. The container portion 212 has an opening 212a so that fluid can be input and output to and from the container portion 212 of the filter 210. Optionally, the filter portion 210 can be located on the opening 212a of the container portion 212. A plurality of connection holes are provided, and each connection hole can respectively communicate with a different fluid delivery pipeline; and the fixing portion 214 is provided on the opening 212a of the container portion 212 and contacts the container portion 212 and covers the opening 212a to fix the container. It should be noted that the container portion 212 and the fixing portion 214 are not integrally formed, but can be separated from each other to facilitate replacement of the container portion 212. The fluid input pipe 222 and the fluid output pipe 224 are disposed on the fixed portion 214, and the fluid input pipe 222 and the fluid output pipe 224 communicate with the openings 212a of the container portion 212 of the filter 210, respectively. The fluid input pipe 222 is used to convey fluid. To the filter 210, and the fluid output pipe 224 is used to convey fluid out of the filter 210. The filter monitoring system 200 of this embodiment may further include a fluid discharge pipe 226 disposed on the fixing portion 214, and the fluid discharge pipe 226 communicates with the opening 212a of the container portion 212 of the filter 210, where the fluid discharge pipe 226 is used for The fluid is delivered out of the filter 210. The pressure detection device 100 is disposed on the fixing portion 214. The pressure detection device 100 includes a first pressure sensor PD1 and a second pressure sensor PD2. The first pressure sensor PD1 is used to measure the fluid in the fluid input pipe 222. The second pressure sensor PD2 is used to measure the pressure of the fluid in the fluid output pipe 224 to obtain the second pressure value. In addition, the pressure detection device 100 may also be as shown in FIG. The pressure detection device 100 includes a base 110, a first pressure sensor PD1, and a second pressure sensor PD2. The base 110 is disposed between the filter 210 and the fluid input pipe 222 and the fluid output pipe 224, and has The first communication pipe 112 and the second communication pipe 114 will not be described again. In addition, optionally, the pressure detection device 100 may further include a third pressure sensor PD3 to measure the pressure of the fluid in the fluid discharge pipe 226 to obtain a third pressure value. Similarly, the base 110 may also be The third communication pipe 116 is provided, which will not be described again. Therefore, when the pressure detection device 100 shown in FIG. 1 is applied to the filter monitoring system 200 of the present invention, both ends of the first communication pipe 112 are connected to the filter 210 and the fluid input pipe 222, respectively. The two ends of the communication pipe 114 are connected to the filter 210 and the fluid output pipe 224, and the two ends of the third communication pipe 116 are respectively connected to the filter 210 and the fluid discharge pipe 226. Thus, the first, second, and first The three pressure detectors PD1, PD2, and PD3 can measure pressure values in the fluid input pipe 222, the fluid output pipe 224, and the fluid discharge pipe 226, respectively.

Please refer to FIG. 3, which illustrates a flow chart of fluid conveyance according to the present invention. As shown in Figure 3, during the manufacturing process, fluids such as fluid raw materials will be supplied by the fluid supply end (step FT1), and the fluid may be transported under pressure by a pressurized pump, and then transported through the fluid input pipe 222 to The filter 210 (steps FT2 and FT3), that is, the fluid will sequentially reach the filter 210 through the fluid input pipe 222 and the first communication pipe 112 by the pressure provided by the pressurizing pump. Then, the filter 210 filters the passing fluid (step FT4), so as to improve the quality of the fluid. Finally, the fluid output from the filter 210 is transmitted to the use end through the fluid output pipe 224 (steps FT5 and FT6), so that the high-quality fluid is used in subsequent processes. In addition, during the transportation of fluid, microfoam may be generated due to the nature of the fluid, high temperature or pressure difference during transportation, which will affect the flow rate of the fluid and the use of the process at the end of use. Therefore, the fluid discharge pipe can be used. 226 Transfer the fluid with microfoam to another fluid collection place to reduce the impact of microfoam on the end of use. It should also be noted that, under the condition that the fluid is in a fixed flow rate in the fluid input pipe 222, when the fluid passes through the filter 210, the pressure of the fluid will cause a specific change. Therefore, the fluid pressure in the fluid input pipe 222 and The pressure of the fluid in the fluid output pipe 224 will generate a specific pressure difference, that is, the first pressure value and the second pressure value will have a specific pressure difference. In contrast, when the filter 210 is blocked or damaged, the filtering efficiency is It will weaken and the differential pressure will shift.

Please refer to FIG. 2 and refer to FIG. 1 at the same time. As shown in FIGS. 1 to 2, the pressure detection device 100 of this embodiment may further include a signal output unit 120 disposed on the base 110 and a signal The output unit 120 is electrically connected to the first pressure sensor PD1, the second pressure sensor PD2, and the third pressure sensor PD3. In addition, the filter monitoring system 200 of this embodiment may further include a signal transmission line CL. Is connected to the signal output unit 120, so the first pressure value, the second pressure value and the third pressure value measured by the first pressure sensor PD1, the second pressure sensor PD2 and the third pressure sensor PD3 It can be output by the signal output unit 120 and transmitted to a monitoring device 230 of the filter monitoring system 200 through the signal transmission line CL. For example, the monitoring device 230 can include a monitoring unit 232, such as Fault detection and judgment A classification (FDC) unit is used to monitor changes in the first pressure value, the second pressure value, and the third pressure value, but is not limited thereto. In addition, the signal output unit 120 can also be electrically connected to the processing device 240 on the user end via the signal transmission line CL, so that the signal output unit 120 can directly transmit the signal to the processing device 240 on the user end. In this embodiment, the monitoring device 230 may also be electrically connected to the process equipment 240 at the user end through another signal transmission line. When the monitoring finds that the pressure difference between the first pressure value and the second pressure value or the third pressure value changes, It can be linked to the process equipment 240 in real time, such as suspending the process of the process equipment 240. In addition, the filter monitoring system 200 of this embodiment may further include a display 234, which is electrically connected to the monitoring device 230 or included in the monitoring device 230 for continuously displaying various pressure values. In a modified embodiment, the display 234 may also be directly disposed on the pressure detection device 100, for example, disposed on the base 110.

In addition, since the fluid flow rate provided at the fluid supply end may cause unexpected flow changes due to various factors, and the magnitude of the fluid flow rate directly affects the pressure difference caused by the fluid flowing through the filter 210, the present invention The filter monitoring system 200 may optionally further include a flow meter disposed at the end of the fluid input pipe 222 to measure the fluid flow rate transmitted by the fluid input pipe 222 to obtain the fluid flow value and transmit the fluid flow value to the monitoring device. 230 to monitor the changes in pressure and flow of the fluid at the same time, thereby monitoring the filtering performance of the filter 210 more accurately.

Please refer to FIG. 4, and refer to FIG. 2 and FIG. 3 at the same time. FIG. 4 shows a flowchart of a method for detecting a filtering efficiency of a filter according to the present invention. As shown in FIG. 2 and FIG. 4, the method for detecting the filtering performance of the filter 210 in this embodiment includes the following steps. First, step 410 is performed to provide a filter monitoring system 200 as described in FIG. 2 and fluid transfer is performed as shown in FIG. 3. Then, step 420 is performed to measure the fluid input using the first pressure sensor PD1. The first pressure value is obtained from the fluid pressure in the tube 222, and the second pressure value is obtained by measuring the fluid pressure in the fluid output tube 224 with the second pressure sensor PD2, and then step 440 is performed according to the first pressure value and the first pressure value. The second pressure value determines whether the filtering performance of the filter 210 is normal. The determination method can be determined automatically by the pressure detection device 100 or by the field personnel according to the display 234. In addition, the pressure detection device 100 may also transmit the first pressure value and the second pressure value to the monitoring device 230 (eg, step 430) for automatic determination. Whether the filtering performance of the filter 210 of the filter monitoring system 200 is normal is determined based on the pressure difference between the first pressure value and the second pressure value, that is, when the pressure difference between the first pressure value and the second pressure value When it is greater than or less than a preset value range, it means that the filtering efficiency of the filter 210 has changed. Step 450 is required to immediately stop sending fluid to the process equipment 240 at the user end to stop the process and perform maintenance of the filter 210. In addition, when the pressure difference between the first pressure value and the second pressure value is larger or smaller than a certain preset value range, the monitoring device 230 or the pressure detection device 100 may automatically perform step 450, and may further issue an alarm or even stop automatically. Process equipment 240 for fluid conveyance and use side to avoid uncleaned fluid affecting the process at the use side and reduce product yield. On the other hand, in addition to automatic determination, the monitoring device 230 can further increase the pressure value. Time monitoring to analyze the usage status of the filter 210 and calculate the life of the filter 210 to improve the maintenance effect.

In addition, in this embodiment, since the third pressure sensor PD3 can measure the pressure of the fluid in the fluid discharge pipe 226 to obtain the third pressure value, not only the pressure of the first pressure value and the second pressure value can be used. The difference is used as the basis for determining the performance of the filter 210, and the pressure difference between the first pressure value and the third pressure value may also be used as the basis for determining the performance of the filter 210.

Please refer to FIG. 5 and also refer to FIG. 2. FIG. 5 shows a flowchart of a method for inspecting whether a filter is removable according to the present invention. As shown in FIG. 2 and FIG. 5, the method for checking whether the filter 210 is removable in this embodiment includes the following steps: First, step 510 is performed to provide a filter monitoring system 200 as shown in FIG. Conveyance, and then proceed to step 520, which uses the first pressure sensor PD1, the second pressure sensor PD2, and the third pressure sensor PD3 to measure the fluid of the fluid input pipe 222, the fluid output pipe 224, and the fluid discharge pipe 226, respectively. Pressure to obtain the first pressure value, the second pressure value, and the third pressure value, and then proceed to step 540 to determine whether the filter of the filter monitoring system 200 is removable according to the first pressure value, the second pressure value, and the third pressure value 210, wherein the filter 210 of the detachable filter monitoring system 200 can be determined automatically by the pressure detection device 100 or can be determined by field personnel according to the display 234. In addition, the pressure detection device 100 may also transmit the first pressure value, the second pressure value, and the third pressure value to the monitoring device 230 (such as step 530) for automatic determination, or may be determined by field personnel according to the display 234.

Specifically, if the fluid in the fluid transfer pipeline does not have a residual pressure under the condition of the removable filter 210, the first pressure value, the second pressure value, and the third pressure value are all about a specific value, For example, the pressure difference between the first pressure value, the second pressure value, and the third pressure value relative to the ambient pressure is 0 Pascal (Pa), so in this case, step 550 can be performed to safely remove the filter 210 and perform maintenance. . On the other hand, when the fluid in the fluid transfer line has a residual pressure, for example, the pressure difference between one of the first pressure value, the second pressure value, and the third pressure value with respect to the ambient pressure is not 0 Pascals, that is, it is determined as For the non-removable filter 210, step 560 is required, and the fluid can be removed by the fluid discharge pipe 226 until the residual pressure is eliminated, but the method of removing the residual pressure of the fluid is not limited thereto. The fluid discharge pipe 226 of the filter monitoring system 200 in this embodiment may have a valve, and when it is determined that the filter 210 is not removable, the valve may be opened so that the first pressure value, the second pressure value, and the third pressure value may be It is adjusted through the fluid discharge pipe 226. When the fluid is adjusted to have no residual pressure, step 550 is performed again to safely remove the filter 210 and perform maintenance.

In summary, since the pressure detection device of the present invention includes a pressure sensor, the pressure value of the fluid delivery pipeline connected to the fluid temporary storage container can be obtained through the measurement of the pressure sensor. Similarly, since the filter monitoring system of the present invention includes a pressure sensor, the pressure value of the fluid delivery pipeline connected to the filter can be understood by the pressure sensor, and the filtering by the detection filter of the present invention can be performed by the pressure sensor. The efficiency method uses the pressure value measured by the pressure sensor to monitor the filtering performance of the filter. In addition, the method for detecting whether the filter can be detached by the method of the present invention uses the pressure value measured by the pressure sensor to Determine whether the fluid has a residual pressure, and then confirm whether the filter can be removed to improve the safety of the filter maintenance process. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of patent application of the present invention shall fall within the scope of the present invention.

100‧‧‧Pressure detection device
110‧‧‧ base
112‧‧‧First connecting pipe
114‧‧‧Second connecting pipe
116‧‧‧Third connecting pipe
120‧‧‧Signal output unit
200‧‧‧ filter monitoring system
210‧‧‧ Filter
212‧‧‧Container Department
212a‧‧‧open
214‧‧‧Fixed section
222‧‧‧fluid inlet tube
224‧‧‧ fluid output tube
226‧‧‧fluid discharge pipe
230‧‧‧ monitoring device
232‧‧‧Monitoring unit
234‧‧‧Display
240‧‧‧ end-use process equipment
410 ～ 450、510 ～ 560 、 FT1 ～ FT6‧‧‧step
CL ‧‧‧ signal transmission line
PD1‧‧‧first pressure sensor
PD2‧‧‧Second pressure sensor
PD3‧‧‧Third pressure sensor

FIG. 1 is a three-dimensional schematic diagram of an embodiment of a pressure detection device of the present invention. FIG. 2 is a schematic diagram of an embodiment of the filter monitoring system of the present invention. FIG. 3 shows a flow chart of the fluid transportation of the present invention. FIG. 4 is a flowchart of a method for detecting a filtering efficiency of a filter according to the present invention. FIG. 5 is a flowchart of a method for inspecting whether a filter is removable according to the present invention.

100‧‧‧Pressure detection device

110‧‧‧ base

112‧‧‧First connecting pipe

114‧‧‧Second connecting pipe

116‧‧‧Third connecting pipe

120‧‧‧Signal output unit

200‧‧‧ filter monitoring system

210‧‧‧ Filter

212‧‧‧Container Department

212a‧‧‧open

214‧‧‧Fixed section

222‧‧‧fluid inlet tube

224‧‧‧ fluid output tube

226‧‧‧fluid discharge pipe

230‧‧‧ monitoring device

232‧‧‧Monitoring unit

234‧‧‧Display

240‧‧‧ end-use process equipment

CL‧‧‧Signal transmission line

PD1‧‧‧first pressure sensor

PD2‧‧‧Second pressure sensor

PD3‧‧‧Third pressure sensor

Claims (15)

A pressure detection device includes: a base having a first communication tube and a second communication tube; a first pressure sensor disposed in the first communication tube for measuring The pressure of the first communication pipe to obtain a first pressure value; and a second pressure sensor disposed in the second communication pipe to measure the pressure of the second communication pipe to obtain a second pressure Pressure value; two ends of the first communication tube are respectively used to connect a fluid temporary storage container and a fluid input tube, and two ends of the second communication tube are respectively used to connect the fluid temporary storage container and a fluid Output tube. The pressure detection device according to claim 1, wherein the base further has a third communication tube, the pressure detection device further includes a third pressure sensor, and two ends of the third communication tube are respectively used for connection The fluid temporary storage container and a fluid discharge pipe, and the third pressure sensor is disposed in the third communication pipe, and is used to measure the pressure of the third communication pipe to obtain a third pressure value. The pressure detection device according to claim 1, further comprising a signal output unit disposed on the base, the signal output unit is electrically connected to the first pressure sensor and the second pressure sensor, And used to transmit the first pressure value and the second pressure value to a monitoring device. The pressure detecting device according to claim 1, wherein the fluid temporary storage container is a filter. A filter monitoring system includes: a filter comprising: a container portion having an opening; and a fixing portion provided on the opening of the container portion, the fixing portion and the container A fluid inlet and a fluid outlet are arranged on the fixed part, and the fluid inlet and the fluid outlet are respectively connected to the opening, wherein A fluid input pipe system is used to transport fluid to the filter, and a fluid output pipe system is used to transport fluid out of the filter; and a pressure detection device is disposed on the fixed portion, and the pressure detection device includes: a A first pressure sensor for measuring the pressure of the fluid input tube to obtain a first pressure value; and a second pressure sensor for measuring the pressure of the fluid output tube to obtain a second pressure value. The filter monitoring system according to claim 5, wherein the pressure detecting device further includes a base disposed between the filter and the fluid input pipe and between the filter and the fluid output pipe, the base having A first communication pipe and a second communication pipe, two ends of the first communication pipe are respectively used to connect the filter and the fluid input pipe, and two ends of the second communication pipe are respectively used to connect the The filter and the fluid output pipe. The filter monitoring system according to claim 6, further comprising a fluid vent pipe disposed on the fixed portion, and the fluid vent pipe communicates with the opening, and the pressure detection device further includes a third A pressure sensor for measuring the pressure in the fluid discharge pipe, and the base further has a third communication pipe, and two ends of the third communication pipe are respectively used to connect the filter and the fluid discharge pipe . The filter monitoring system according to claim 5, further comprising a signal transmission line electrically connected to the first pressure sensor and the second pressure sensor, and the pressure detection device can transmit the signal through the signal transmission line. The first pressure value and the second pressure value are transmitted to a monitoring device for monitoring changes in the first pressure value and the second pressure value. A method for detecting a filtering efficiency of a filter, comprising: providing a filter monitoring system as described in claim 5; measuring the first pressure value using the first pressure sensor of the filter monitoring system; using the The second pressure sensor of the filter monitoring system measures the second pressure value; and determines whether the filtering performance of the filter of the filter monitoring system is normal according to the first pressure value and the second pressure value. The method for detecting the filtering performance of a filter according to claim 9, wherein determining whether the filtering performance of the filter is normal is based on a pressure difference between the first pressure value and the second pressure value. The method for detecting the filtering efficiency of a filter according to claim 9, wherein the filter monitoring system further includes a fluid discharge pipe disposed on the fixed part of the filter, and the fluid discharge pipe communicates with the filter The opening, and the pressure detecting device of the filter monitoring system further includes a third pressure sensor for measuring the pressure in the fluid discharge pipe to obtain a third pressure value. The method for detecting the filtering performance of a filter as described in claim 11, wherein determining whether the filtering performance of the filter of the filter monitoring system is normal or not further includes determining a pressure difference between the first pressure value and the third pressure value. Make judgments. The method for detecting a filtering efficiency of a filter according to claim 9, wherein the filter monitoring system further includes a signal transmission line electrically connected to the first pressure sensor and the second pressure sensor, and the filtering The pressure detection device of the device monitoring system transmits the first pressure value and the second pressure value to a monitoring device through the signal transmission line to monitor changes in the first pressure value and the second pressure value. The method for detecting the filtering efficiency of a filter according to claim 13, wherein when the pressure difference between the first pressure value and the second pressure value is greater than or less than a preset value range, the monitoring device issues an alarm. A method for checking whether a filter is removable, comprising: providing a filter monitoring system as described in claim 5, and the filter monitoring system further comprising a fluid discharge pipe provided on the fixed part, the filter monitoring system The pressure detecting device further includes a third pressure sensor for measuring the pressure of the fluid discharge pipe to obtain a third pressure value, wherein the fluid discharge pipe is used to transport fluid out of the filter; stop Transport fluid to the filter through the fluid input pipe of the filter monitoring system; and determine whether the filter can be disassembled according to the first pressure value, the second pressure value, and the third pressure value, and when the first pressure When the pressure value, the second pressure value, and the pressure difference between the third pressure value and the ambient pressure are all 0, the filter can be disassembled, and when the first pressure value, the second pressure value, and the third pressure value When the pressure difference with respect to the ambient pressure is not 0, the fluid is discharged through the fluid discharge pipe until the residual pressure is eliminated, and then the filter is disassembled.