Sensor system for detecting harmful ions in water suspended matters on tunnel construction site

Abstract

The invention belongs to the technical field of environment monitoring, and particularly relates to a tunnel construction site water suspended matter harmful ion detection sensor system which comprises a sampling mechanism, sensor modules distributed in the sampling mechanism in an annular array mode, a data processing unit and a communication module. A sealing mechanism and a rotating mechanism are respectively arranged on the surface of the sampling mechanism. According to the tunnel construction site water suspended matter and harmful ion detection sensor system, the sensor system is arranged, various sensor combinations are utilized, various suspended matters and ions can be detected at the same time, concentration changes of various harmful substances in water can be monitored in real time, an early warning threshold value is set, and once a standard exceeding condition is detected, the early warning threshold value is given out. The system can automatically send out an alarm signal, the data processing unit is used for analyzing and storing the collected data, a monitoring report is generated, the communication module and the mobile device are used for data transmission and remote monitoring, and the real-time monitoring effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental monitoring, and in particular to a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site. Background Art

[0002] During tunnel construction, water suspended matter and harmful ions, such as heavy metal ions and ammonia nitrogen, pose a potential threat to the environment and workers' health.

[0003] At present, the monitoring of these pollutants is often time-consuming and has limited accuracy. Traditional monitoring methods are difficult to achieve real-time monitoring and early warning, and thus cannot effectively protect the environment and workers at the construction site. Generally, workers use sampling bottles or pumps to collect water samples at the tunnel construction site, and then send the collected water samples to the laboratory, using chemical analysis methods to detect harmful ions in the water. However, this method usually requires professional personnel to operate, and there is a certain lag, and it cannot provide real-time monitoring data. Therefore, a sensor system for detecting harmful ions in water suspended matter at a tunnel construction site is proposed. Summary of the invention

[0004] Based on the technical problem that the existing tunnel construction water quality monitoring means are time-consuming and difficult to achieve real-time monitoring and early warning, the present invention proposes a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site.

[0005] The present invention proposes a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site, comprising a sensor system consisting of a sampling mechanism, sensor modules distributed in a ring array in the sampling mechanism, a data processing unit and a communication module, wherein a sealing mechanism and a rotating mechanism are respectively provided on the surface of the sampling mechanism.

[0006] The sensor module includes a turbidity sensor, a heavy metal ion sensor and an ammonia nitrogen sensor, which are used to detect the concentration of suspended matter, heavy metal ions and ammonia nitrogen harmful substances in water.

[0007] The data processing unit is used to receive and process the data collected by the sensor.

[0008] Wherein, the communication module is used for data transmission and remote monitoring with mobile devices.

[0009] The sampling mechanism comprises a detection shell, the inner wall of which is slidably connected with a sampling support tube, and the outer surface of the sampling support tube is provided with sampling ports distributed in a circular array, through which tunnel construction water is collected.

[0010] Wherein, the sealing mechanism comprises a retaining ring which is slidably sleeved on the outer surface of the detection housing, and the sampling port is opened and closed by the up and down movement of the retaining ring.

[0011] Among them, the rotating mechanism includes a supporting plate, the outer surface of the lower end of the supporting plate is installed on the upper end of the inner wall of the detection shell through a bearing, the turbidity sensor, the heavy metal ion sensor and the ammonia nitrogen sensor are all installed at the bottom of the supporting plate, and the rotation of the sensor module is realized by the rotation of the supporting plate.

[0012] Preferably, the sampling mechanism further comprises sealing rings respectively fixedly connected to the bottom of the detection housing and the surface of the sampling support tube, and the two sealing rings are in contact with each other.

[0013] Through the above technical solution, the sealing ring prevents water from flowing out of the sampling tube after sampling is completed, and prevents water from entering the interior through the gap between the sampling tube and the detection shell, so that water can only enter the sampling tube through the sampling port.

[0014] Preferably, mounting holes are symmetrically distributed through the surfaces of the detection housing and the sampling support tube, and bolts are threadedly connected to the inner walls of the mounting holes.

[0015] Through the above technical solution, when the sealing ring on the sampling support tube contacts the sealing ring on the detection housing, the bolts are screwed in sequence through the mounting holes on the detection housing and the sampling support tube to connect them, thereby installing the sampling support tube and the detection housing together. At the same time, after the detection is completed, it is convenient to remove the sampling support tube for cleaning or replacement.

[0016] Preferably, the sealing mechanism also includes a bracket fixedly mounted on the surface of the detection housing, the surface of the bracket is symmetrically mounted with driving gears through bearings, the surface of the retaining ring is symmetrically fixedly connected with a connecting rack, and the connecting rack is meshed with the driving gear.

[0017] Through the above technical solution, the positive and negative rotation of the driving gear drives the connecting rack meshing with it to move up and down, and the movement of the connecting rack drives the retaining ring to move.

[0018] Preferably, a rotating shaft is fixedly sleeved at the axis center of the two driving gears, one end of the two rotating shafts extends into the bracket and is installed on the inner wall of the bracket through a bearing, a driving motor is fixedly installed on the surface of the bracket on the side away from the driving gear, one end of the output shaft of the driving motor is fixedly sleeved with one end of one of the rotating shafts, a connecting shaft is installed on the inner wall of the bracket through a bearing, and one end of the rotating shaft close to the driving motor is connected to the surface of the connecting shaft through a transmission belt.

[0019] Through the above technical solution, the rotation of the output shaft of the driving motor drives the rotating shaft connected to it to rotate, the rotation of the rotating shaft drives the driving gear connected to it to rotate, the rotation of the driving gear drives the connected rack meshing with it to move, and at the same time, the rotation of the rotating shaft is synchronously rotated through the transmission belt connecting shaft.

[0020] Preferably, a connecting gear is fixedly sleeved on the surface of the connecting shaft and one end of the other rotating shaft away from the driving gear, and the two connecting gears are meshed with each other.

[0021] Through the above technical solution, the rotation of the connecting shaft drives the connecting gear connected thereto to rotate, and the rotation of the connecting gear drives another connecting gear meshing therewith to rotate, thereby driving the two rotating shafts to rotate in opposite directions.

[0022] Preferably, the rotating mechanism also includes a support plate fixedly mounted on the surface of the detection shell, a stepper motor is fixedly mounted on the bottom of the support plate, one end of the output shaft of the stepper motor passes through the support plate and is fixedly sleeved with a drive shaft, the lower end of the drive shaft is installed with the upper surface of the support plate through a bearing, the upper end of the drive shaft is fixedly sleeved with a drive gear, the upper end outer surface of the support plate is fixedly sleeved with a connecting gear ring, and the drive gear is meshed with the connecting gear ring.

[0023] Through the above technical solution, the rotation of the output shaft of the stepper motor drives the drive shaft connected to it to rotate, the rotation of the drive shaft drives the drive gear connected to it to rotate, the rotation of the drive gear drives the connecting gear ring meshing with it to rotate, and the rotation of the connecting gear ring drives the support plate connected to it to rotate.

[0024] Preferably, reinforcing ribs are fixedly mounted on both sides of the lower surface of the support plate, and one end of the reinforcing ribs is fixedly connected to the surface of the detection housing.

[0025] Through the above technical solution, the reinforcing ribs provide stable support for the support plate.

[0026] Preferably, six connecting rods are installed in a circular array at the bottom of the support plate, and light shields are fixedly connected between the six connecting rods. The turbidity sensor, the heavy metal ion sensor and the ammonia nitrogen sensor extend into the three light shields respectively. At the same time, limiting wheels are installed in a circular array at the bottom of the support plate, and a limiting groove is provided on the surface of the detection shell, and the surface of the limiting wheel is slidably connected to the inner wall of the limiting groove.

[0027] Through the above technical scheme, the connecting rod connects the light shield and the supporting plate, so that the rotation of the supporting plate drives the light shield to rotate. At the same time, the light shield can avoid spatial interference between the turbidity sensor, heavy metal ion sensor and ammonia nitrogen sensor, and can also avoid optical cross interference. At the same time, the connection between the limit wheel and the limit groove improves the stability of the rotation of the supporting plate.

[0028] Preferably, an alarm is fixedly mounted on the upper surface of the support plate, and the alarm sounds an alarm and transmits relevant data to the communication module.

[0029] Through the above technical solution, when the data detected by the sensor module exceeds a preset threshold, the alarm sounds an alarm and transmits the relevant data to the operator's mobile device so that timely countermeasures can be taken.

[0030] The beneficial effects of the present invention are:

[0031] 1. By setting up a sampling mechanism, water at the tunnel construction site enters the sampling support tube through the sampling port, which is convenient for sampling and disassembly. The threaded connection between the bolts and the mounting holes allows the detection housing and the sampling support tube to be quickly disassembled and assembled.

[0032] 2. By setting a sealing mechanism, the sampling port is opened and closed to facilitate sampling at the sampling port, while preventing water from flowing out through the sampling port, thereby achieving a sealing effect.

[0033] 3. By setting up a rotating mechanism, it is convenient to drive the turbidity sensor, heavy metal ion sensor and ammonia nitrogen sensor to rotate, so that these sensors can perform all-round detection of the water in the sampling tube. At the same time, the light shield is used to avoid optical cross interference between sensors, thereby improving the detection efficiency.

[0034] 4. By setting up a sensor system and using a combination of multiple sensors, it is possible to detect multiple suspended matter and ions at the same time, monitor the concentration changes of various harmful substances in the water in real time, and set early warning thresholds. Once an excess is detected, the system can automatically send out an alarm signal, and use the data processing unit to analyze and store the collected data, generate a monitoring report, and then use the communication module to transmit data and remotely monitor with mobile devices, so as to achieve real-time monitoring and early warning effects and improve the level of environmental safety management. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0036] Figure 2 A three-dimensional diagram of the sampling port structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0037] Figure 3 A three-dimensional diagram of the sealing ring structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0038] Figure 4 A three-dimensional diagram of the retaining ring structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0039] Figure 5 A three-dimensional diagram of the rotating shaft structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0040] Figure 6 A three-dimensional diagram of the sampling support tube structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0041] Figure 7 A three-dimensional diagram of the detection housing structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0042] Figure 8 A three-dimensional diagram of the limit groove structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0043] Fig. 9 A three-dimensional diagram of the limit wheel structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0044] Fig.10 A three-dimensional diagram of the stepper motor structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention;

[0045] Fig.11 This is a stereoscopic diagram of the light shield structure of a sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site proposed by the present invention.

[0046] In the figure: 1. detection housing; 11. sampling support tube; 12. sampling port; 13. sealing ring; 14. mounting hole; 15. bolt; 2. turbidity sensor; 3. heavy metal ion sensor; 4. ammonia nitrogen sensor; 5. retaining ring; 51. bracket; 52. driving gear; 53. connecting rack; 54. rotating shaft; 55. driving motor; 56. connecting shaft; 57. transmission belt; 58. connecting gear; 6. supporting plate; 61. supporting plate; 62. stepping motor; 63. driving shaft; 64. driving gear; 65. connecting gear ring; 66. reinforcing rib; 67. connecting rod; 68. light shield; 69. limiting wheel; 610. limiting groove; 7. alarm. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figure 1-Figure 11 A sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site includes a sensor system consisting of a sampling mechanism, sensor modules distributed in a ring array in the sampling mechanism, a data processing unit and a communication module. A sealing mechanism and a rotating mechanism are respectively provided on the surface of the sampling mechanism.

[0049] In order to detect the concentration of suspended matter, heavy metal ions, and ammonia nitrogen harmful substances in water, the sensor module provided includes a turbidity sensor 2, a heavy metal ion sensor 3, and an ammonia nitrogen sensor 4.

[0050] The data processing unit is used to receive and process the data collected by the sensor.

[0051] Among them, the communication module is used for data transmission and remote monitoring with mobile devices.

[0052] By setting up a sensor system and using a combination of multiple sensors, it is possible to detect a variety of suspended matter and ions at the same time, monitor the concentration changes of various harmful substances in the water in real time, and set early warning thresholds. Once an excess is detected, the system can automatically send out an alarm signal, and use the data processing unit to analyze and store the collected data, generate a monitoring report, and then use the communication module to transmit data and remotely monitor with mobile devices to achieve real-time monitoring effects.

[0053] In order to collect tunnel construction water, a sampling mechanism is provided, which includes a detection shell 1, the inner wall of which is slidably connected with a sampling support tube 11, and the outer surface of the sampling support tube 11 is provided with sampling ports 12 distributed in a circular array.

[0054] In order to prevent the collected water from flowing out and to prevent water from entering the interior through the gap between the sampling support tube 11 and the detection housing 1, the sampling mechanism also includes a sealing ring 13 fixedly connected to the bottom of the detection housing 1 and the surface of the sampling support tube 11, and the two sealing rings 13 are in contact with each other.

[0055] In order to facilitate the disassembly and assembly of the sampling support tube 11, mounting holes 14 are symmetrically distributed and penetrated on the surfaces of the detection housing 1 and the sampling support tube 11, and the inner walls of the mounting holes 14 are threadedly connected with bolts 15. When the sealing ring 13 on the sampling support tube 11 contacts the sealing ring 13 on the detection housing 1, the bolts 15 are spirally rotated in sequence to pass through the mounting holes 14 on the detection housing 1 and the sampling support tube 11 to connect, thereby installing the sampling support tube 11 and the detection housing 1 together. At the same time, after the detection is completed, it is convenient to remove the sampling support tube 11 for cleaning or replacement.

[0056] By setting up a sampling mechanism, water from the tunnel construction site enters the sampling support tube 11 through the sampling port 12, which is convenient for sampling and disassembly. The threaded connection between the bolt 15 and the mounting hole 14 allows the detection housing 1 and the sampling support tube 11 to be quickly disassembled.

[0057] In order to seal the sampling port 12 , a sealing mechanism is provided including a retaining ring 5 slidably sleeved on the outer surface of the detection housing 1 , and the sampling port 12 is opened and closed by moving the retaining ring 5 up and down.

[0058] In order to drive the retaining ring 5 to move, the sealing mechanism also includes a bracket 51 fixedly mounted on the surface of the detection housing 1, and the surface of the bracket 51 is symmetrically mounted with driving gears 52 through bearings. The surface of the retaining ring 5 is symmetrically fixedly connected with a connecting rack 53, which is engaged with the driving gear 52. The positive and negative rotation of the driving gear 52 drives the connecting rack 53 engaged with it to move up and down, and the movement of the connecting rack 53 drives the retaining ring 5 to move.

[0059] In order to drive the two driving gears 52 to rotate in opposite directions, a rotating shaft 54 ​​is fixedly sleeved at the axis of the two driving gears 52, one end of the two rotating shafts 54 extends into the bracket 51 and is installed on the inner wall of the bracket 51 through a bearing, a driving motor 55 is fixedly installed on the surface of the side of the bracket 51 away from the driving gear 52, one end of the output shaft of the driving motor 55 is fixedly sleeved with one end of one of the rotating shafts 54, a connecting shaft 56 is installed on the inner wall of the bracket 51 through a bearing, one end of the rotating shaft 54 ​​close to the driving motor 55 is connected to the surface of the connecting shaft 56 through a transmission belt 57, and the surface of the connecting shaft 56 is connected to the other rotating shaft 54 ​​away from the driving gear 52. One end of the gear 52 is fixedly sleeved with a connecting gear 58, and the two connecting gears 58 are meshed with each other. The rotation of the output shaft of the driving motor 55 drives the rotating shaft 54 ​​connected thereto to rotate, and the rotation of the rotating shaft 54 ​​drives the driving gear 52 connected thereto to rotate, and the rotation of the driving gear 52 drives the connecting rack 53 meshed therewith to move. At the same time, the rotation of the rotating shaft 54 ​​is synchronously rotated by the connecting shaft 56 through the transmission belt 57, and the rotation of the connecting shaft 56 drives the connecting gear 58 connected thereto to rotate, and the rotation of the connecting gear 58 drives another connecting gear 58 meshed therewith to rotate, thereby driving the two rotating shafts 54 to rotate in the opposite direction.

[0060] By providing a sealing mechanism, the sampling port 12 is opened and closed, which facilitates sampling at the sampling port 12 and prevents water from flowing out through the sampling port 12, thereby achieving a sealing effect.

[0061] Among them, in order to drive the sensor module to rotate, the rotating mechanism is provided with a support disk 6. The lower outer surface of the support disk 6 is installed on the upper end of the inner wall of the detection housing 1 through a bearing. The turbidity sensor 2, heavy metal ion sensor 3, and ammonia nitrogen sensor 4 are all installed at the bottom of the support disk 6. The rotation of the support disk 6 realizes the rotation of the sensor module.

[0062] In order to drive the support plate 61 to rotate, the rotating mechanism further includes a support plate 61 fixedly installed on the surface of the detection housing 1. A stepping motor 62 is fixedly installed at the bottom of the support plate 61. One end of the output shaft of the stepping motor 62 passes through the support plate 61 and is fixedly sleeved with a driving shaft 63. The lower end of the driving shaft 63 is installed on the upper surface of the support plate 61 through a bearing. The upper end of the driving shaft 63 is fixedly sleeved with a driving gear 64. The upper outer surface of the support disk 6 is fixedly sleeved with a connecting gear ring 65. The driving gear 64 meshes with the connecting gear ring 65. The rotation of the output shaft of the stepping motor 62 drives the connected driving shaft 63 to rotate. The rotation of the driving shaft 63 drives the connected driving gear 64 to rotate. The rotation of the driving gear 64 drives the meshed connecting gear ring 65 to rotate. The rotation of the connecting gear ring 65 drives the connected support disk 6 to rotate.

[0063] In order to stabilize the support plate 61, reinforcing ribs 66 are fixedly installed on both sides of the lower surface of the support plate 61. One end of the reinforcing rib 66 is fixedly connected to the surface of the detection housing 1.

[0064] In order to avoid optical interference between sensor modules, six connecting rods 67 are installed in a circular array at the bottom of the support disk 6. A light-shielding cover 68 is fixedly connected between every two of the six connecting rods 67. The turbidity sensor 2, heavy metal ion sensor 3, and ammonia nitrogen sensor 4 respectively extend into three light-shielding covers 68. At the same time, limiting wheels 69 are installed in a circular array at the bottom of the support disk 6. A limiting groove 610 is opened on the surface of the detection housing 1. The surface of the limiting wheel 69 is slidably connected to the inner wall of the limiting groove 610. The connecting rod 67 connects the light-shielding cover 68 to the support disk 6, facilitating the rotation of the support disk 6 to drive the light-shielding cover 68 to rotate. At the same time, the light-shielding cover 68 is convenient for avoiding spatial interference between the turbidity sensor 2, heavy metal ion sensor 3, and ammonia nitrogen sensor 4, and can also avoid optical cross-interference. At the same time, the connection between the limiting wheel 69 and the limiting groove 610 improves the stability of the rotation of the support disk 6.

[0065] In order to give an alarm, an alarm 7 is fixedly installed on the upper surface of the support disk 6. The alarm 7 gives an alarm and transmits relevant data to the communication module. When the sensor module detects that the data exceeds the preset threshold, the alarm 7 gives an alarm and transmits relevant data to the mobile device of the operator so as to take corresponding measures in time.

[0066] Working principle: when in use, put the sampling support tube 11 into the water at the tunnel construction site, so that the water enters the sampling support tube 11 through the sampling port 12, and then start the driving motor 55, and the rotation of the output shaft of the driving motor 55 drives the rotating shaft 54 ​​connected thereto to rotate, and the rotation of the rotating shaft 54 ​​drives the driving gear 52 connected thereto to rotate, and the rotation of the driving gear 52 drives the connecting rack 53 meshing therewith to move, and at the same time, the rotation of the rotating shaft 54 ​​is synchronously rotated through the transmission belt 57 connecting shaft 56, and the rotation of the connecting shaft 56 drives the connecting gear 58 connected thereto to rotate, and the rotation of the connecting gear 58 drives another connecting gear 58 meshing therewith to rotate, so that the two rotating shafts 54 rotate in the opposite direction, so that the two connecting racks 53 move downward, and then drive the retaining ring 5 to move downward to cover the sampling port 12;

[0067] Then, the turbidity sensor 2, the heavy metal ion sensor 3 and the ammonia nitrogen sensor 4 are started to detect the concentrations of suspended matter, heavy metal ions and ammonia nitrogen in the water in the sampling support tube 11, and the stepper motor 62 is started at the same time. The output shaft of the stepper motor 62 drives the drive shaft 63 connected thereto to rotate, and the rotation of the drive shaft 63 drives the drive gear 64 connected thereto to rotate. The rotation of the drive gear 64 drives the connecting gear ring 65 meshing therewith to rotate, and the rotation of the connecting gear ring 65 drives the supporting disk 6 connected thereto to rotate. The rotation of the supporting disk 6 drives the turbidity sensor 2, the heavy metal ion sensor 3 and the ammonia nitrogen sensor 4 to rotate, and the rotation of the supporting disk 6 drives the light shield 68 to rotate through the connecting rod 67. The light shield 68 avoids optical cross interference between the turbidity sensor 2, the heavy metal ion sensor 3 and the ammonia nitrogen sensor 4. The data processing unit receives and processes the data collected by the sensor module, and uses the communication module to transmit the information to the mobile device in real time;

[0068] When the data detected by the sensor module exceeds a preset threshold, the alarm 7 sounds an alarm and transmits the relevant data to the operator's mobile device through the communication module;

[0069] After the detection is completed, the bolts 15 are removed so that the bolts 15 leave the mounting holes 14 , so that the detection housing 1 and the sampling support tube 11 can be separated and the sampling support tube 11 can be removed.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site, characterized in that: A sensor system comprising a sampling mechanism, sensor modules arranged in a ring array in the sampling mechanism, a data processing unit and a communication module, wherein the surface of the sampling mechanism is respectively provided with a sealing mechanism and a rotating mechanism; The sensor module comprises a turbidity sensor (2), a heavy metal ion sensor (3) and an ammonia nitrogen sensor (4), which are used to detect the concentration of suspended matter, heavy metal ions and ammonia nitrogen harmful substances in water; Wherein, the data processing unit is used to receive and process the data collected by the sensor; Wherein, the communication module is used for data transmission and remote monitoring with mobile devices; The sampling mechanism comprises a detection housing (1), the inner wall of the detection housing (1) is slidably connected with a sampling support tube (11), the outer surface of the sampling support tube (11) is provided with sampling ports (12) distributed in a circular array, and tunnel construction water is collected through the sampling ports (12); The sealing mechanism comprises a retaining ring (5) slidably sleeved on the outer surface of the detection housing (1), and the sampling port (12) is opened and closed by moving the retaining ring (5) up and down; The rotating mechanism comprises a supporting plate (6), the outer surface of the lower end of the supporting plate (6) is mounted on the upper end of the inner wall of the detection housing (1) via a bearing, the turbidity sensor (2), the heavy metal ion sensor (3) and the ammonia nitrogen sensor (4) are all mounted on the bottom of the supporting plate (6), and the rotation of the sensor module is achieved by the rotation of the supporting plate (6).

2. The tunnel construction site water suspended matter harmful ion detection sensor system according to claim 1 is characterized by: The sampling mechanism further comprises sealing rings (13) respectively fixedly connected to the bottom of the detection housing (1) and the surface of the sampling support tube (11), and the two sealing rings (13) are in contact with each other.

3. The tunnel construction site water suspended matter harmful ion detection sensor system according to claim 1 is characterized by: The surfaces of the detection housing (1) and the sampling support tube (11) are symmetrically distributed with mounting holes (14) extending therethrough, and the inner walls of the mounting holes (14) are threadedly connected with bolts (15).

4. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 1 is characterized in that: The sealing mechanism further comprises a bracket (51) fixedly mounted on the surface of the detection housing (1), a driving gear (52) being symmetrically mounted on the surface of the bracket (51) via bearings, a connecting rack (53) being symmetrically fixedly connected to the surface of the retaining ring (5), and the connecting rack (53) being meshed with the driving gear (52).

5. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 4 is characterized in that: A rotating shaft (54) is fixedly sleeved at the axis of the two driving gears (52), one end of the two rotating shafts (54) extends into the bracket (51) and is installed with the inner wall of the bracket (51) through a bearing, a driving motor (55) is fixedly installed on the surface of the bracket (51) away from the driving gear (52), one end of the output shaft of the driving motor (55) is fixedly sleeved with one end of one of the rotating shafts (54), a connecting shaft (56) is installed on the inner wall of the bracket (51) through a bearing, and one end of the rotating shaft (54) close to the driving motor (55) is connected to the surface of the connecting shaft (56) through a transmission belt (57).

6. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 5 is characterized in that: A connecting gear (58) is fixedly sleeved on the surface of the connecting shaft (56) and one end of the other rotating shaft (54) away from the driving gear (52), and the two connecting gears (58) are meshed with each other.

7. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 1 is characterized by: The rotating mechanism also includes a support plate (61) fixedly mounted on the surface of the detection housing (1); a stepper motor (62) is fixedly mounted on the bottom of the support plate (61); one end of the output shaft of the stepper motor (62) passes through the support plate (61) and is fixedly sleeved with a drive shaft (63); the lower end of the drive shaft (63) is mounted on the upper surface of the support plate (61) via a bearing; the upper end of the drive shaft (63) is fixedly sleeved with a drive gear (64); the upper end outer surface of the support plate (6) is fixedly sleeved with a connecting gear ring (65); the drive gear (64) is meshed with the connecting gear ring (65).

8. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 7 is characterized in that: Reinforcing ribs (66) are fixedly mounted on both sides of the lower surface of the support plate (61), and one end of the reinforcing rib (66) is fixedly connected to the surface of the detection housing (1).

9. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 8 is characterized in that: The bottom of the support plate (6) is provided with six connecting rods (67) distributed in a circular array, and light shields (68) are fixedly connected between the six connecting rods (67). The turbidity sensor (2), the heavy metal ion sensor (3) and the ammonia nitrogen sensor (4) extend into the three light shields (68) respectively. At the same time, the bottom of the support plate (6) is provided with limiting wheels (69) distributed in a circular array, and a limiting groove (610) is provided on the surface of the detection housing (1), and the surface of the limiting wheel (69) is slidably connected to the inner wall of the limiting groove (610).

10. The sensor system for detecting harmful ions of suspended matter in water at a tunnel construction site according to claim 1, characterized in that: An alarm (7) is fixedly mounted on the upper surface of the support plate (6), and the alarm (7) sounds an alarm and transmits relevant data to the communication module.

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