Online Instrument Signal Testing System for Water Quality Detection and Its Testing Method

Abstract

The present invention discloses an on-line instrument signal testing system for water quality detection and its signal testing method, which includes a detection pipe, a water pipeline to be measured, a deionized water pipeline, a plurality of calibration water piston pipes and a plurality of control valve groups. A plurality of detection probes are arranged in the detection pipe. The plurality of calibration water piston pipes include cylindrical piston cavities and pistons that move inside them. The two ends of the calibration water piston pipes are provided with a first water inlet and a second water inlet. The plurality of detection probes and the control valve groups are connected to a detection control terminal. The water pipeline to be measured, the deionized water pipeline and the calibration water piston pipes are switched by the control valve group to form at least four paths between the water inlet of the detection pipe. The paths include a detection path, a cleaning path, a first calibration path and a second calibration path. This on-line instrument signal testing system for water quality detection has the function of detecting the accuracy of sensor signals and can timely discover faults of on-line water quality detection equipment for repair and replacement.

Description

Technical Field

[0001] The invention belongs to the technical field of water quality detection systems, and particularly relates to an on-line instrument signal test system for water quality detection and a test method thereof. Background Art

[0002] With the economic development and population growth, problems such as water resource shortage and water pollution have become increasingly serious, and people's attention to water quality has been continuously improved. For example, in some industrially developed areas, due to long-term industrial activities, the surrounding water bodies have been polluted to varying degrees, which has prompted people to urgently need to monitor water quality in real time and accurately to understand the changes in water quality and take corresponding protection measures. Traditional water quality detection usually requires manual sampling and then sending it to the laboratory for analysis. This method has problems such as long detection cycles, untimely data, and high labor costs. Moreover, for some scenarios that require real-time monitoring of water quality changes, such as the sewage treatment process and drinking water sources, traditional detection methods cannot meet the requirements. Therefore, a technology and equipment that can monitor water quality in real time and continuously are needed.

[0003] With the continuous development of sensor technology, communication technology, automation technology, etc., it provides technical support for the research and development and application of on-line water quality detection instruments. For example, new sensors can detect water quality parameters more accurately and sensitively, communication technology can realize remote transmission and real-time monitoring of data, and automation technology makes the operation and maintenance of the instrument more convenient. It can continuously monitor various parameters in the water body, such as pH value, dissolved oxygen, turbidity, conductivity, temperature, ammonia nitrogen, total phosphorus, etc., and real-time feedback the changes in water quality. This is of great significance for some industries with high water quality requirements, such as drinking water production and aquaculture.

[0004] The on-line water quality detection instrument can be installed at the industrial wastewater discharge outlet, river estuary and other positions for pollution source monitoring. In the event of a sudden water quality pollution incident, it can quickly obtain water quality data, help relevant departments promptly understand the pollution degree, scope and change trend, and provide a scientific basis for emergency treatment decisions. It can continuously record water quality data and form long-term historical data records. These data are of great value for analyzing the long-term change trend of water quality and evaluating the effectiveness of water environmental protection measures.

[0005] Existing on-line water quality detection equipment generally performs detection at specific intervals through various sensors, and real-time feedbacks various parameters of water quality, so as to achieve real-time detection of water quality. However, in the long-term use process of the sensors of this on-line water quality detection equipment, problems such as scale, corrosion, electrical contact or service life may cause errors in detection parameters or loss of detection signals. However, the existing detection equipment cannot timely detect the situation of incorrect detection parameters, which may lead to incorrect parameters measured for a period of time. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a signal testing system and a testing method for an on-line water quality detection instrument. This signal testing system and testing method for an on-line water quality detection instrument have the function of detecting the accuracy of sensor signals, so as to be able to timely discover the faults of on-line water quality detection equipment for repair and replacement.

[0007] To solve the above technical problems, the present invention is solved by the following technical solutions: A signal testing system for an on-line water quality detection instrument includes a detection pipe with a water inlet and a water outlet. A number of detection probes are arranged in the detection pipe. The signal testing system for an on-line water quality detection instrument further includes a pipeline for water to be tested, a deionized water pipeline, a number of calibration water piston pipes and a number of control valve groups. The number of calibration water piston pipes includes cylindrical piston chambers and pistons movable inside them. First water inlets and second water inlets are provided at both ends of the calibration water piston pipes. The number of the detection probes and the control valve groups are connected to a detection control terminal. At least four passages are formed by switching the pipeline for water to be tested, the deionized water pipeline and the calibration water piston pipes with the water inlet of the detection pipe through the control valve groups. The passages include a detection passage for connecting the pipeline for water to be tested with the water inlet of the detection pipe; a cleaning passage for connecting the deionized water pipeline with the water inlet of the detection pipe; a first calibration passage for connecting the pipeline for water to be tested with the first water inlet of the calibration water piston pipe, and the second water inlet of the calibration water piston pipe is connected to the water inlet of the detection pipe; a second calibration passage for connecting the pipeline for water to be tested with the second water inlet of the calibration water piston pipe, and the first water inlet of the calibration water piston pipe is connected to the water inlet of the detection pipe. When this signal testing system for an on-line water quality detection instrument is in use, the pipeline for water to be tested is connected to the water to be tested, and the water quality of the water to be tested is detected by the detection probes in the detection pipe. During detection, the deionized water pipeline can be connected to the water inlet of the detection pipe by switching through the control valve group, so as to clean the inside of the detection pipe and the detection probes. The detection results of the on-line water quality detection instrument will change with the change of the water quality in the pipeline for water to be tested. Therefore, the water in the detection pipe can be stored in the calibration water piston pipe as calibration water. Through the detection data of the water to be tested, when new water to be tested is stored in the calibration water piston pipe as calibration water later, the calibration water in the previous calibration water piston pipe is squeezed out from the other water inlet of the calibration water piston pipe into the detection pipe for detection and calibration with the detection data of the previous calibration water as the water to be tested. If the detection data is the same, it means that the detection probe is normal. If the detection data is different, it means that the detection probe is abnormal, indicating that repair and replacement are required. Thus, this signal testing system for an on-line water quality detection instrument has the function of detecting the accuracy of sensor signals, and can timely discover the faults of on-line water quality detection equipment for repair and replacement.

[0008] In the above technical solution, preferably, the on-line instrument signal testing system for water quality detection includes two parallel detection tubes. Through a number of detection probes in two groups of the two parallel detection tubes, when the calibration of one group of detection probes is abnormal, the data of the group of detection probes with normal calibration can still be used as correct detection data.

[0009] In the above technical solution, preferably, the control valve group includes a first reversing valve and a second reversing valve connected in series. The first reversing valve controls the intake or disconnection from the water pipeline to be measured or the deionized water pipeline. The second reversing valve controls the connection of the water outlet of the first reversing valve to the first water inlet of the calibration water piston tube, and the second water inlet is connected to the water inlet of the detection tube; or the water outlet of the first reversing valve is connected to the second water inlet of the calibration water piston tube, and the first water inlet is connected to the water inlet of the detection tube; or the water directly flows out from the water outlet of the first reversing valve to the water inlet of the detection tube.

[0010] In the above technical solution, preferably, both the first reversing valve and the second reversing valve are solenoid valves.

[0011] In the above technical solution, preferably, the first reversing valve is a three-position three-way reversing valve, and the middle position of the three-position three-way reversing valve is the disconnection position, and the two side positions respectively intake water from the water pipeline to be measured and the deionized water pipeline.

[0012] In the above technical solution, preferably, the second reversing valve is a three-position four-way reversing valve. The water inlet of the middle position of the three-position four-way reversing valve is directly connected to the detection tube. The two side positions are respectively that the water outlet of the first reversing valve is connected to the first water inlet of the calibration water piston tube, and the second water inlet is connected to the water inlet of the detection tube; and the water outlet of the first reversing valve is connected to the second water inlet of the calibration water piston tube, and the first water inlet is connected to the water inlet of the detection tube.

[0013] The testing method of the above on-line instrument signal testing system for water quality detection includes the following steps: 1) The control valve group is switched to the detection path, and the water to be measured in the water pipeline to be measured enters the detection tube and is detected and the parameters are recorded by a number of detection probes; 2) The control valve group is switched to the cleaning path, and the deionized water in the deionized water pipeline enters the detection tube to clean the detection tube and the detection probes; 3) The control valve group is switched to the first calibration path or the second calibration path, and the water to be measured in the water pipeline to be measured enters the calibration water piston tube as the subsequent calibration water, and the calibration water previously in the calibration water piston tube is discharged into the detection tube and detected and the parameters are recorded by a number of detection probes. The recorded parameters are compared with the parameters of the water to be measured measured at the time when the calibration water enters the calibration water piston tube. If the parameters are consistent, the detection result signal meets the requirements and the detection probes are normal; if the parameters are inconsistent, the detection signal does not meet the requirements and it is prompted that the detection probes are abnormal.

[0014] In the above technical solution, preferably, the on-line instrument signal testing system for water quality detection includes two parallel detection tubes. A number of detection probes in the two detection tubes are tested separately as a group. When performing step 3) calibration, if only the parameters of one group of detection probes are consistent with the measured parameters of the water to be tested when the calibration water enters the calibration water piston tube, the detection result signal of the corresponding detection tube meets the requirements and the detection probe is normal. The detection parameters of this group of detection tubes are used as the detection result; the detection signal of the other detection probe does not meet the requirements and an abnormal detection probe is prompted.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When this on-line instrument signal testing system for water quality detection is in use, the pipeline of the water to be tested is connected to the water to be tested, and the water quality of the water to be tested is detected by the detection probes in the detection tubes. During detection, the deionized water pipeline can be connected to the water inlet of the detection tube through the switching of the control valve group, so as to clean the inside of the detection tube and the detection probes. The detection result of the on-line instrument for water quality detection will change with the change of the water quality in the pipeline of the water to be tested. Therefore, the water in the detection tube can be stored in the calibration water piston tube as calibration water. Through the detection data of the water to be tested, when the new water to be tested is stored in the calibration water piston tube as calibration water later, the calibration water in the previous calibration water piston tube is squeezed out from the other water passing port of the calibration water piston tube into the detection tube and detected and calibrated with the detection data of the water to be tested before this calibration water. If the detection data is the same, it means that the detection probe is normal. If the detection data is the same, it means that the detection probe is abnormal and a prompt for repair and replacement is required. Thus, the on-line instrument signal testing system for water quality detection has the function of detecting the accuracy of the sensor signal and can timely discover the faults of the on-line water quality detection equipment for repair and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the system connection structure of an embodiment of the present invention.

[0017] Figure 2 It is a sectional view structure diagram of the calibration water piston tube in an embodiment of the present invention.

[0018] Figure 3 It is a partial schematic diagram when the control valve group is switched to an open circuit in an embodiment of the present invention.

[0019] Figure 4 It is a partial schematic diagram when the control valve group is switched to a detection path in an embodiment of the present invention.

[0020] Figure 5 It is a partial schematic diagram when the control valve group is switched to a cleaning path in an embodiment of the present invention.

[0021] Figure 6 It is a partial schematic diagram when the control valve group is switched to a first calibration path in an embodiment of the present invention.

[0022] Figure 7 This is a partial schematic diagram when the control valve group in the embodiment of the present invention is switched to the second calibration path. Detailed implementation manners

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners: Refer to Figures 1 to 7 , a water quality detection on-line instrument signal test system, including a detection pipe 1 with a water inlet and a water outlet, a plurality of detection probes 2 are arranged in the detection pipe 1. The water quality detection on-line instrument signal test system further includes a pipeline 3 for water to be tested, a deionized water pipeline 4, a plurality of calibration water piston pipes 5 and a plurality of control valve groups 6. The plurality of calibration water piston pipes 5 include a cylindrical piston cavity 51 and a piston 52 movable inside it. First water inlets 53 and second water inlets 54 are provided at both ends of the calibration water piston pipe 5. A plurality of detection probes 2 and the control valve group 6 are connected to a detection control terminal. At least four paths are switched by the control valve group 6 between the pipeline 3 for water to be tested, the deionized water pipeline 4 and the calibration water piston pipes 5 and the water inlet of the detection pipe 1. The paths include a detection path that connects the pipeline 3 for water to be tested with the water inlet of the detection pipe 1; a cleaning path that connects the deionized water pipeline 4 with the water inlet of the detection pipe 1; a first calibration path that connects the pipeline 3 for water to be tested with the first water inlet 53 of the calibration water piston pipe 5, and the second water inlet 54 of the calibration water piston pipe 5 is connected to the water inlet of the detection pipe 1; a second calibration path that connects the pipeline 3 for water to be tested with the second water inlet 54 of the calibration water piston pipe 5, and the first water inlet 53 of the calibration water piston pipe 5 is connected to the water inlet of the detection pipe 1. When this water quality detection on-line instrument signal test system is in use, the pipeline 3 for water to be tested is connected to the water to be tested, and the water quality of the water to be tested is detected by the detection probes 2 in the detection pipe 1. During detection, the deionized water pipeline 4 can be connected to the water inlet of the detection pipe 1 by switching through the control valve group 6, so as to clean the inside of the detection pipe 4 and the detection probes 2. The detection result of the water quality detection on-line instrument will change with the change of the water quality in the pipeline 3 for water to be tested. Therefore, the water in the detection pipe 1 can be stored in the calibration water piston pipe 5 as calibration water. Through the detection data of the water to be tested, when new water to be tested is stored in the calibration water piston pipe 5 as calibration water later, the calibration water in the previous calibration water piston pipe 5 is squeezed out from the other water inlet of the calibration water piston pipe 5 into the detection pipe 1 to perform detection and calibration with the detection data of the water to be tested in the previous time when this calibration water was used as the water to be tested. If the detection data is the same, it indicates that the detection probe 2 is normal. If the detection data is different, it indicates that the detection probe 2 is abnormal, and it is prompted to repair and replace, so that this water quality detection on-line instrument signal test system has the function of detecting the accuracy of the sensor signal and can timely detect the faults of the on-line water quality detection equipment for maintenance and replacement.

[0024] The detection probe 2 in this embodiment may include a pH sensor probe, a turbidity sensor probe, an ammonia nitrogen sensor probe, a residual chlorine sensor probe, a dissolved oxygen sensor probe, a chemical oxygen demand sensor probe, a chlorophyll sensor probe, a blue-green algae sensor probe, a conductivity sensor probe, etc. The number and type of the detection probe 2 can be selected according to the actual situation of the water to be measured.

[0025] In this embodiment, from Figure 1 it can be seen that there are multiple calibration water piston pipes 5 and control valve groups 6. Since the water quality difference between two adjacent detections is often small, the preferred solution is that the calibration water piston pipes 5 and the control valve groups 6 are used for detection in sequence and cycle. The calibration water piston pipes 5 sequentially and cyclically store the water to be measured as calibration water and extrude the previously stored calibration water for detection and calibration.

[0026] In this embodiment, the on-line instrument signal test system for water quality detection includes two parallel detection pipes 1. Through two groups of several detection probes 2 of the two parallel detection pipes 1, when one group of detection probes 2 has an abnormal calibration, the data of one group of detection probes 2 with normal calibration can still be used as correct detection data.

[0027] In this embodiment, referring to Figures 4 to 7 , the control valve group 6 includes a first reversing valve 7 and a second reversing valve 8 connected in series. The first reversing valve 7 controls the water inlet or disconnection from the water pipe 3 to be measured or the deionized water pipe 4. The second reversing valve 8 controls the water outlet of the first reversing valve 7 to be connected to the first water inlet 53 of the calibration water piston pipe 5, and the second water outlet 54 is connected to the water inlet of the detection pipe 1; or the water outlet of the first reversing valve 7 is connected to the second water outlet 54 of the calibration water piston pipe 5, and the first water inlet 53 is connected to the water inlet of the detection pipe 1; or the water directly flows out from the water outlet of the first reversing valve 7 to the water inlet of the detection pipe 1.

[0028] In this embodiment, for convenient control, both the first reversing valve 7 and the second reversing valve 8 are solenoid valves. Both the first reversing valve 7 and the second reversing valve 8 can be controlled by the detection control terminal.

[0029] In this embodiment, referring to Figures 4 to 7 , the first reversing valve 7 is a three-position three-way reversing valve. The middle position of the three-position three-way reversing valve is the disconnection position, and the two side positions respectively intake water from the water pipe 3 to be measured and the deionized water pipe 4.

[0030] In this embodiment, referring to Figures 4 to 7, the second reversing valve 8 is a three-position four-way reversing valve. The middle-position water inlet of the three-position four-way reversing valve is directly connected to the detection pipe 1. The two side positions are respectively that the water outlet of the first reversing valve 7 is connected to the first water passing port 53 of the calibration water piston pipe 5, and the second water passing port 54 is connected to the water inlet of the detection pipe 1; and the water outlet of the first reversing valve 7 is connected to the second water passing port 54 of the calibration water piston pipe 5, and the first water passing port 53 is connected to the water inlet of the detection pipe 1.

[0031] Of course, it is easy for those skilled in the art to understand that the first reversing valve 7 and the second reversing valve 8 can be designed into other structures different from the present embodiment Figures 4 to 7 shown, as long as it can achieve the four types of passages and breaks as described in the present embodiment through switching, it can be used in the implementation of the present invention.

[0032] In this embodiment, the test method of the water quality detection on-line instrument signal test system includes the following steps: 1) The control valve group 6 is switched to the detection passage, and the water to be tested in the water pipeline 3 to be tested enters the detection pipe 1 and is detected and recorded by several detection probes 2; 2) The control valve group 6 is switched to the cleaning passage, and the deionized water in the deionized water pipeline 4 enters the detection pipe 1 to clean the detection pipe 1 and the detection probes 2; 3) The control valve group 6 is switched to the first calibration passage or the second calibration passage, and the water to be tested in the water pipeline 3 to be tested enters the calibration water piston pipe 5 as the subsequent calibration water, and the calibration water previously in the calibration water piston pipe 5 is discharged to the detection pipe 1 and detected and recorded by several detection probes 2. The recorded parameters are compared with the parameters of the water to be tested measured during the test when the calibration water enters the calibration water piston pipe 5. If the parameters are consistent, the detection result signal meets the requirements and the detection probes 2 are normal; if the parameters are inconsistent, the detection signal does not meet the requirements and it is prompted that the detection probes 2 are abnormal. 4) The control valve group 6 is switched to the cleaning passage, and the deionized water in the deionized water pipeline 4 enters the detection pipe 1 to clean the detection pipe 1 and the detection probes 2; 5) The control valve group 6 is switched to the open circuit to store the detection probes 2 in the deionized water. The data of these detection probes 2 are read after the water to be tested or the calibration water completely fills the detection pipe 1 and the value is stable.

[0033] This water quality detection on-line instrument signal test system has the function of detecting the accuracy of the sensor signal and can timely discover the faults of the on-line water quality detection equipment for repair and replacement.

[0034] The water quality detection on-line instrument signal test system includes two parallel detection pipes 1. Several detection probes 2 in the two detection pipes 1 are tested separately as a group. When performing the calibration in step 3), if only the parameters of one group of detection probes 2 are consistent with the parameters of the water to be tested measured during the test when the calibration water enters the calibration water piston pipe 5, the detection result signal of the corresponding detection pipe 1 meets the requirements and the detection probes 2 are normal, and the detection parameters of this group of detection pipes 1 are used as the detection result; the detection signal of the other detection probes 2 does not meet the requirements and it is prompted that the detection probes 2 are abnormal.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Online instrument signal testing system for water quality detection, including a detection pipe (1) with a water inlet and a water outlet, and a number of detection probes (2) are arranged inside the detection pipe (1), characterized in that: The on-line instrument signal testing system for water quality detection further includes a pipeline (3) for water to be tested, a deionized water pipeline (4), a plurality of calibration water piston pipes (5), and a plurality of control valve groups (6). The plurality of calibration water piston pipes (5) include cylindrical piston chambers (51) and pistons (52) movable therein. First water inlets (53) and second water inlets (54) are provided at both ends of the calibration water piston pipes (5). The plurality of detection probes (2) and the control valve groups (6) are connected to a detection control terminal. At least four passageways are formed by switching through the control valve groups (6) between the pipeline (3) for water to be tested, the deionized water pipeline (4), and the inlets of the calibration water piston pipes (5) and the detection pipe (1). The passageways include a detection passageway for connecting the pipeline (3) for water to be tested with the inlet of the detection pipe (1); a cleaning passageway for connecting the deionized water pipeline (4) with the inlet of the detection pipe (1); a first calibration passageway for connecting the pipeline (3) for water to be tested with the first water inlet (53) of the calibration water piston pipe (5), and the second water inlet (54) of the calibration water piston pipe (5) with the inlet of the detection pipe (1); a second calibration passageway for connecting the pipeline (3) for water to be tested with the second water inlet (54) of the calibration water piston pipe (5), and the first water inlet (53) of the calibration water piston pipe (5) with the inlet of the detection pipe (1). The control valve group (6) includes a first reversing valve (7) and a second reversing valve (8) connected in series. The first reversing valve (7) controls the water inlet or disconnection from the pipeline (3) for water to be tested or the deionized water pipeline (4). The second reversing valve (8) controls the connection of the water outlet of the first reversing valve (7) to the first water inlet (53) of the calibration water piston pipe (5), and the second water inlet (54) to the inlet of the detection pipe (1); or the connection of the water outlet of the first reversing valve (7) to the second water inlet (54) of the calibration water piston pipe (5), and the first water inlet (53) to the inlet of the detection pipe (1); or the direct water outlet from the water outlet of the first reversing valve (7) to the inlet of the detection pipe (1).

2. The on-line instrument signal testing system for water quality detection according to claim 1, wherein: The on-line instrument signal testing system for water quality detection includes two parallel detection pipes (1).

3. The on-line instrument signal test system for water quality detection according to claim 1, characterized in that: Both the first reversing valve (7) and the second reversing valve (8) are solenoid valves.

4. The on-line instrument signal test system for water quality detection according to claim 1, characterized in that: The first reversing valve (7) is a three-position three-way reversing valve. The middle position of the three-position three-way reversing valve is the disconnection position, and the two side positions respectively intake water from the pipeline (3) for water to be tested and the deionized water pipeline (4).

5. The on-line instrument signal testing system for water quality detection according to claim 1, characterized in that: The second reversing valve (8) is a three-position four-way reversing valve. The water inlet at the middle position of the three-position four-way reversing valve is directly connected to the detection pipe (1). The water outlets at the two side positions are respectively that the water outlet of the first reversing valve (7) is connected to the first water passage port (53) of the calibration water piston pipe (5), the second water passage port (54) is connected to the water inlet of the detection pipe (1); and the water outlet of the first reversing valve (7) is connected to the second water passage port (54) of the calibration water piston pipe (5), and the first water passage port (53) is connected to the water inlet of the detection pipe (1).

6. The testing method of the water quality detection on-line instrument signal testing system according to claim 1, characterized in that It includes the following steps: 1) The control valve group (6) is switched to the detection path, and the water to be tested in the water pipe to be tested (3) enters the detection pipe (1) and is detected and the parameters are recorded by a plurality of detection probes (2); 2) The control valve group (6) is switched to the cleaning path, and the deionized water in the deionized water pipe (4) enters the detection pipe (1) to clean the detection pipe (1) and the detection probes (2); 3) The control valve group (6) is switched to the first calibration path or the second calibration path, and the water to be tested in the water pipe to be tested (3) enters the calibration water piston pipe (5) as the subsequent calibration water, and the calibration water previously in the calibration water piston pipe (5) is discharged to the detection pipe (1) and is detected and the parameters are recorded by a plurality of detection probes (2). The recorded parameters are compared with the parameters of the water to be tested measured during the test when the calibration water enters the calibration water piston pipe (5). If the parameters are the same, the detection result signal meets the requirements and the detection probes (2) are normal; If the parameters are inconsistent, the detection signal does not meet the requirements and it is prompted that the detection probes (2) are abnormal.

7. The testing method of the on-line instrument signal testing system for water quality detection according to claim 6, characterized in that: The on-line instrument signal test system for water quality detection includes two parallel detection pipes (1). A plurality of detection probes (2) in the two detection pipes (1) are tested separately as a group. When performing the calibration in step 3), if only the parameters of one group of detection probes (2) are consistent with the parameters of the water to be tested measured during the test when the calibration water enters the calibration water piston pipe (5), the detection result signal of the corresponding detection pipe (1) meets the requirements and the detection probes (2) are normal, and the detection parameters of this group of detection pipes (1) are used as the detection result; the detection signal of the other detection probes (2) does not meet the requirements and it is prompted that the detection probes (2) are abnormal.

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