CN104820445A - Cable trench water level monitoring alarm system - Google Patents

Abstract

The cable ditch water level monitoring and alarm system of the present invention; the technical problem to be solved is: to provide a water level monitoring and alarm system capable of real-time monitoring of the water level in the cable ditch and discharge of accumulated water in the ditch; the adopted technical solution is: cable ditch The water level monitoring and alarm system includes: a PLC controller, a high water level sensor, an alarm device and a drainage device controller connected to a drainage device, the high water level sensor is connected to the PLC controller through a wireless communication device, the alarm device and The drainage device controllers are all connected to the PLC controller through the relay KJ1; the present invention is suitable for power systems.

Description

Cable trench water level monitoring and alarm system

technical field

The invention relates to a water level monitoring and alarming system for a cable ditch, which belongs to the technical field of water level monitoring and alarming.

Background technique

The cable trench is an underground channel for laying cables and the cover can be opened to protect the cables from external damage.

Because the cable trench is located under the ground, it is easy to cause water accumulation for a long time, especially in the rainy season. Once water accumulation occurs in the cable trench, the cable is prone to cracks in the water soaking for a long time, which will eventually lead to damage to the cable insulation and cause accidents. Occurrence, therefore, it is particularly important to invent a kind of monitoring and warning system for cable trench water level.

Contents of the invention

The invention overcomes the deficiencies of the prior art, and the technical problem to be solved is: to provide a water level monitoring and alarm system capable of real-time monitoring of the water level in the cable ditch and discharging the accumulated water in the ditch.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a cable ditch water level monitoring and alarm system, including: a PLC controller, a high water level sensor, an alarm device and a drainage device controller connected to a drainage device. The communication device is connected with the PLC controller, and the alarm device and the drainage device controller are connected with the PLC controller through the relay KJ1.

The high water level sensor is arranged in the cable ditch, and the vertical distance between the high water level sensor and the bottom of the cable ditch is 3 cm ~ 10 cm, and the bottom of the cable ditch is also provided with a low water level sensor, and the low water level sensor communicates with the The PLC controller is connected.

The alarm device includes a buzzer HD1 and a warning light DL1, the sampling end of the PLC controller is connected to the output end of the wireless communication device, and the first control end of the PLC controller is provided with a High and low level to control the closed and open switch K1, one end of the switch K1 is connected in parallel with one end of the normally open contact KJ1.2 of the relay KJ1 and one end of the normally open contact KJ1.3 of the relay KJ1, and then connected to the positive pole of the power supply , the other end of the switch K1 is connected to one end of the coil KJ1.1 of the relay KJ1, and the other end of the coil KJ1.1 of the relay KJ1 is connected to one end of the buzzer HD1, one end of the warning light DL1 and the drainage device control One end of the power supply coil Q1 of the relay is connected to the negative pole of the power supply, and the other end of the normally open contact KJ1.2 of the relay KJ1 is connected to the other end of the buzzer HD1 and then connected to the other end of the warning light DL1. The other end of the normally open contact KJ1.3 of KJ1 is connected with the other end of the power supply coil Q1; the system also includes an LED display, and the LED display is connected with the second control terminal of the PLC controller; The system also includes an emergency button, which is connected to the third control terminal of the PLC controller; the high water level sensor is provided with a GPS positioning unit; the drainage device is a water pump; the wireless communication device is set at In the ring network cabinet outside the cable trench; the PLC controller and the alarm device are all set in the background dispatching monitoring center.

Compared with the prior art, the present invention has the following beneficial effects:

1. The cable ditch water level monitoring and alarm system in the present invention includes: PLC controller, high water level sensor, alarm device and drainage device controller connected to drainage device, high water level sensor is connected with PLC controller through wireless communication device, alarm device and the drainage device controller are connected to the PLC controller through the relay KJ1; the high water level sensor monitors the water level in the cable ditch in real time, and when the water level in the ditch continues to rise and reaches the early warning value of the sensor, the PLC controller controls the alarm device to give an alarm to prompt At the same time, the PLC controller also controls the action of the drainage device through the drainage device controller to discharge the accumulated water in the cable trench.

2. In the present invention, a low water level sensor can be installed at the bottom of the cable ditch. The low water level sensor is connected to the PLC controller through a wireless communication device. The device controller controls the drainage device to stop action.

3. The system can also include an LED display to display the water level information in the cable ditch in real time; it can also include an emergency button, which can be pressed when the water level in the ditch has exceeded the maximum water level but the drainage device has not received an action signal. button, start the drainage device with one button, and discharge the accumulated water in time; in addition, a GPS positioning unit can be set in the high water level sensor, so that the staff can accurately and timely find the fault point, which is convenient for manual maintenance and troubleshooting.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is described in further detail;

Fig. 1 is the schematic diagram of circuit structure of the present invention;

Fig. 2 is the partial control schematic diagram of PLC controller of the present invention;

Among them: 1 is the PLC controller, 2 is the high water level sensor, 3 is the alarm device, 4 is the drainage device controller, 5 is the drainage device, 6 is the wireless communication device, 7 is the low water level sensor, 8 is the LED display screen, 9 For the panic button.

Detailed ways

As shown in Figure 1, the cable ditch water level monitoring and alarm system includes: a PLC controller 1, a high water level sensor 2, an alarm device 3 and a drainage device controller 4 connected to the drainage device 5, and the high water level sensor 2 communicates with the water level sensor through a wireless communication device 6. The PLC controller 1 is connected, the high water level sensor 2 is arranged in the cable trench, and the vertical distance between the high water level sensor 2 and the bottom of the cable trench is 3 cm ~ 10 cm, specifically, the vertical distance between the high water level sensor 2 and the bottom of the cable trench 3cm; the alarm device 3 and the drainage device controller 4 are all connected to the PLC controller 1 through the relay KJ1; It is connected with the PLC controller 1.

Specifically, the alarm device 3 may include a buzzer HD1 and a warning light DL1, the sampling terminal of the PLC controller 1 is connected to the output terminal of the wireless communication device 6, and the first control terminal of the PLC controller 1 is set There is a switch K1 that is closed and opened by the high and low levels of the first control terminal, and one end of the switch K1 is connected to one of the normally open contacts KJ1.2 of the relay KJ1 in parallel.

One end of the normally open contact KJ1.3 of the relay KJ1 is connected to the positive pole of the power supply, the other end of the switch K1 is connected to one end of the coil KJ1.1 of the relay KJ1, and the other end of the coil KJ1.1 of the relay KJ1 is connected to the bee One end of buzzer HD1, one end of warning light DL1 and one end of power supply coil Q1 of drainage device controller 4 are connected to the negative pole of the power supply, and the other end of normally open contact KJ1.2 of relay KJ1 is connected to the other end of buzzer HD1 One end is connected to the other end of the warning light DL1, and the other end of the normally open contact KJ1.3 of the relay KJ1 is connected to the other end of the power supply coil Q1; value, the first output terminal of the PLC controller 1 outputs a high level, the first switch K1 is closed, the signal lamp HD1 is lit, the buzzer DL1 sounds an alarm, the power supply coil Q1 is energized, the drainage device controller 4 is started, and the drainage device 5 start drainage; when the detected water level value drops to the early warning value of the low water level sensor 7, the first output terminal of the PLC controller 1 outputs a low level, the first switch K1 is disconnected, and the coil KJ1.1 of the relay KJ1 loses power, The normally open contact KJ1.2 of the relay KJ1 is disconnected from the normally open contact KJ1.3, the signal lamp HD1 dims, the buzzer DL1 stops alarming, the power supply coil Q1 loses power, the drainage device controller 4 stops running, and the drainage device 5 Stop the draining action.

Specifically, the drainage device 5 can be a water pump, the wireless communication device 6 can be arranged in the ring network cabinet outside the cable trench, and the PLC controller 1 and the alarm device 3 can be arranged in the background dispatching and monitoring center; in addition, the entire The system can also include an LED display 8, the LED display 8 is connected to the second control terminal of the PLC controller 1, the system also includes an emergency button 9, the emergency button 9 is connected to the third control terminal of the PLC controller 1, and the high The water level sensor 2 can be provided with a GPS positioning unit, and when a fault occurs, it can be convenient for the staff to find the fault point in time and accurately.

The cable ditch water level monitoring and alarm system of the present invention detects the rising water level and the discharge water level through the high water level sensor 2 and the low water level sensor 7 respectively, and controls the drainage device 5 to drain water through the PLC controller 1, thereby ensuring that the cables in the ditch are not damaged. Standing water erosion maintains the normal operation of the power supply circuit, has outstanding substantive features and significant progress; the embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments. Various changes can also be made within the scope of knowledge possessed by those of ordinary skill without departing from the gist of the present invention.

Claims (9)

1. The cable trench water level monitoring and alarm system is characterized in that it includes a PLC controller (1), a high water level sensor (2), an alarm device (3) and a drainage device controller (4) connected to the drainage device (5). The high water level sensor (2) is connected to the PLC controller (1) through the wireless communication device (6), and the alarm device (3) and the drainage device controller (4) are connected to the PLC controller through the relay KJ1 (1) connected. 2. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the high water level sensor (2) is set in the cable trench, and the vertical distance between the high water level sensor (2) and the bottom of the cable trench is 3cm ~10 cm, a low water level sensor (7) is also provided at the bottom of the cable trench, and the low water level sensor (7) is connected to the PLC controller (1) through a wireless communication device (6). 3. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the alarm device (3) includes a buzzer HD1 and a warning light DL1, and the sampling terminal of the PLC controller (1) is connected to the The output terminal of the wireless communication device (6) is connected. The first control terminal of the PLC controller (1) is provided with a switch K1 that is closed and opened by the high and low levels of the first control terminal. One terminal of the switch K1 One end of the normally open contact KJ1.2 of the relay KJ1 and one end of the normally open contact KJ1.3 of the relay KJ1 are connected in parallel to the positive pole of the power supply, and the other end of the switch K1 is connected to one end of the coil KJ1.1 of the relay KJ1 The other end of the coil KJ1.1 of the relay KJ1 is connected in parallel with one end of the buzzer HD1, one end of the warning light DL1 and one end of the power supply coil Q1 of the drainage device controller (4), and then connected to the negative pole of the power supply. The other end of the normally open contact KJ1.2 of the relay KJ1 is connected to the other end of the buzzer HD1 and then connected to the other end of the warning light DL1, and the other end of the normally open contact KJ1.3 of the relay KJ1 is connected to the power supply coil The other end of Q1 is connected. 4. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the system also includes an LED display (8), the LED display (8) and the PLC controller (1) connected to the second control terminal. 5. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the system also includes an emergency button (9), and the emergency button (9) is connected with the third of the PLC controller (1) The control terminal is connected. 6. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the high water level sensor (2) is provided with a GPS positioning unit. 7. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the drainage device (5) is a water pump. 8. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the wireless communication device (6) is arranged in a ring network cabinet outside the cable trench. 9. The cable trench water level monitoring and alarm system according to claim 1, characterized in that: the PLC controller (1) and the alarm device (3) are both set in the background dispatching monitoring center.