Subway flood prevention monitoring system
By introducing an endoscope system and current adjustment components into the subway flood control monitoring system, the problem of uneven light source brightness was solved, enabling timely detection and accurate monitoring of drainage pipes and ensuring the normal operation of the subway station's drainage system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-03-27
AI Technical Summary
The existing subway flood control monitoring system is inadequate in terms of timeliness and accuracy, and cannot effectively guarantee the normal operation of the drainage system in subway stations.
An endoscope system is used, including a light source module, a camera and a communication module. By connecting current regulating elements in series in the multiple LED light branches of the light source module, the parallel current sharing of multiple LED lights is achieved, ensuring uniform brightness in all parts of the light source module. Combined with a water level and flow detection module, the water level and drainage pipe conditions in the subway station are monitored in real time.
It enables the timely detection of abnormalities such as blockages and damage in drainage pipes, ensuring the normal operation of drainage pipes and improving the timeliness and accuracy of subway flood prevention monitoring.
Smart Images
Figure CN224054311U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of automatic monitoring, in particular to a subway flood prevention monitoring system. BACKGROUND
[0002] The subway is an important part of urban public transportation and undertakes a large number of passenger transport tasks in the urban transportation system. It is of great significance to maintain the stability of the urban transportation network and ensure the normal operation of the city to do a good job in subway flood prevention and ensure the safe operation of the subway.
[0003] The subway flood prevention monitoring system can monitor the water level, rainfall and drainage pipe state in the subway station in real time. When the monitoring data reaches or exceeds the threshold value, the system can immediately issue a warning signal to remind the staff to take preventive measures in time.
[0004] In order to further improve the safety of subway operation, it is necessary to improve the existing subway flood prevention monitoring system to improve the timeliness and accuracy of the subway flood prevention monitoring system. CONTENT OF THE INVENTION
[0005] The present disclosure provides a subway flood prevention monitoring system to improve the timeliness and accuracy of the subway flood prevention monitoring system.
[0006] The present disclosure provides a subway flood prevention monitoring system, which comprises a pipeline endoscope in communication connection with a monitoring center, the pipeline endoscope comprising a light source module, a camera and a communication module,
[0007] The light source module comprises a plurality of LED lamps connected in parallel, wherein one of the LED lamps comprises a switch tube Q2, a sampling resistor RC1 and a first subtraction circuit, the anode of the LED lamp is connected with a first power supply end, the cathode of the LED lamp is connected with the first end of the switch tube Q2, the second end of the switch tube Q2 is connected with the first end of the sampling resistor RC1, and the second end of the sampling resistor RC1 is connected with a second power supply end,
[0008] The first end of the sampling resistor RC1 is connected to the first input end of the first subtraction circuit, the second input end of the first subtraction circuit is connected with a first reference voltage, and the output end of the first subtraction circuit is connected to the control end of the switch tube Q2.
[0009] In an exemplary embodiment of the present disclosure, a voltage follower is provided between the output end of the first subtraction circuit and the control end of the switch tube Q2.
[0010] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises a potentiometer RP1, a resistor R3 and a potentiometer RP2,
[0011] The first end of the potentiometer RP2 is connected with a first power supply, the second end of the potentiometer RP2 is connected with the first end of the potentiometer RP1 through a resistor R3, and the second end of the potentiometer RP1 is grounded.
[0012] The first end of the potentiometer RP1 is the first reference voltage.
[0013] In an exemplary embodiment of the present disclosure, the light source module further comprises a DC-DC circuit and a driving chip, an input end of the DC-DC circuit is used to be connected with a battery, and output ends of the DC-DC circuit are the first power supply end and the second power supply end.
[0014] The DC-DC circuit internally comprises a power tube, an input end of the driving chip is connected with a controller, and an output end of the driving chip is connected with a control end of the power tube.
[0015] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises a first comparator, a first input end of the first comparator is connected with the first end of the sampling resistor RC1, a second input end of the first comparator is connected with the second end of the potentiometer RP2, and an output end of the first comparator is connected with an enable end of the driving chip.
[0016] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises:
[0017] A plurality of water level detection modules are used to detect water levels at a plurality of positions in a subway station, and the plurality of water level detection modules are respectively connected in communication with the monitoring center.
[0018] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises:
[0019] A plurality of flow detection modules are used to detect flows of a plurality of drainage pipes in the subway station, and the plurality of flow detection modules are respectively connected in communication with the monitoring center.
[0020] The subway flood prevention monitoring system provided by the embodiment of the present disclosure has the following working principles and beneficial effects:
[0021] In the embodiment of the present disclosure, by arranging the endoscope in the drainage pipe, the staff in the monitoring center can intuitively see the internal condition of the pipe, and abnormal conditions such as blockage and pipe damage in the pipe can be found in time, so that the normal work of the drainage pipe is ensured.
[0022] The endoscope mainly comprises a light source module, a camera and a communication module, wherein the camera is used to collect image signals in the pipeline, the light source module is used to provide sufficient light for the inside of the pipeline, so as to ensure that the camera can also obtain a clear image in the dark pipeline environment, and the communication module is used to transmit the image signals to an external device, so as to facilitate a worker to view in real time.
[0023] Considering that the light source output by the light source module may be non-uniform in brightness distribution, so as to cause some parts in the pipeline to be too bright, some parts to be relatively dark, shadows to exist, and the definition of the image to be affected. In order to solve the above problems, the current adjusting element is connected in series in the multi-path LED lamp branch of the light source module, so as to realize parallel current sharing of the multi-path LED lamp and ensure that the brightness of each part of the light source module is uniform.
[0024] Taking one of the LED lamps as an example, the current adjusting element comprises a switch tube Q2, a sampling resistor RC1 and a first subtraction circuit, wherein the sampling resistor RC1 is used to detect the current of the LED lamp, when the current of the LED lamp increases, the voltage at the first end of the sampling resistor RC1 increases, the output voltage of the first subtraction circuit decreases, the voltage at the control end of the switch tube Q2 decreases, the conduction current of the switch tube Q2 decreases, and vice versa. Through the above negative feedback adjustment process, the current of the LED lamp is stabilized within the set current range.
[0025] Therefore, by connecting the current adjusting element in series in the multi-path LED lamp branch of the light source module, parallel current sharing of the multi-path LED lamp can be realized, the brightness of each part of the light source module is ensured to be uniform, and the timeliness and accuracy of the pipeline monitoring are ensured. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.
[0027] Figure 1 is a schematic diagram of a light source module provided by the embodiments of the present disclosure;
[0028] Figure 2 is a schematic diagram of a driving chip provided by the embodiments of the present disclosure. DETAILED DESCRIPTION
[0029] In order for those skilled in the art to better understand the present scheme, the technical solutions in the embodiments of the present scheme will be clearly described below in combination with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are part of the embodiments of the present scheme, not all. Based on the embodiments in the present scheme, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present scheme.
[0030] The terms "include", "comprise" and other any variants thereof in the specification and claims of the present scheme and the above-mentioned drawings refer to "including but not limited to", which is intended to cover non-exclusive inclusion and is not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, not to describe a specific order.
[0031] The implementation of the present disclosure is described in detail below in combination with specific drawings:
[0032] Figure 1 A schematic diagram of a subway flood prevention monitoring system is provided for the embodiments of the present disclosure. Referring to Figure 1 The subway flood prevention monitoring system comprises a pipeline endoscope in communication connection with a monitoring center, the pipeline endoscope comprising a light source module, a camera and a communication module,
[0033] The light source module comprises a plurality of LED lamps connected in parallel, one of which comprises a switch tube Q2, a sampling resistor RC1 and a first subtraction circuit, the anode of the LED lamp is connected with a first power supply end, the cathode of the LED lamp is connected with the first end of the switch tube Q2, the second end of the switch tube Q2 is connected with the first end of the sampling resistor RC1, and the second end of the sampling resistor RC1 is connected with a second power supply end,
[0034] The first end of the sampling resistor RC1 is connected to the first input end of the first subtraction circuit, the second input end of the first subtraction circuit is connected with a first reference voltage, and the output end of the first subtraction circuit is connected to the control end of the switch tube Q2.
[0035] In the present embodiment, by arranging an endoscope in the drainage pipeline, the staff located in the monitoring center can intuitively see the internal situation of the pipeline, timely find abnormal conditions such as blockage and pipeline damage in the pipeline, and ensure the normal work of the drainage pipeline.
[0036] The endoscope mainly comprises a light source module, a camera and a communication module, wherein the camera is used to collect image signals in the pipeline, the light source module is used to provide sufficient light for the inside of the pipeline, to ensure that the camera can also obtain clear images in the dark pipeline environment, and the communication module is used to transmit the image signals to external equipment, for the convenience of the staff to view in real time.
[0037] Considering that the light source output by the light source module can have uneven brightness distribution, resulting in some parts of the pipeline being too bright, some parts being relatively dark, and shadows existing, affecting the clarity of the image. To solve the above problems, the current regulating element is connected in series in the multi-path LED lamp branch of the light source module, to realize parallel current distribution of the multi-path LED lamp and ensure uniform brightness of each part of the light source module.
[0038] Taking one of the LED lamps as an example, the current regulating element includes a switch tube Q2, a sampling resistor RC1, and a first subtraction circuit. The sampling resistor RC1 is used to detect the current of the LED lamp. When the current of the LED lamp increases, the voltage at the first end of the sampling resistor RC1 increases, the output voltage of the first subtraction circuit decreases, the voltage at the control end of the switch tube Q2 decreases, and the conduction current of the switch tube Q2 decreases.
[0039] Conversely, when the current of the LED lamp decreases, the voltage at the first end of the sampling resistor RC1 decreases, the output voltage of the first subtraction circuit increases, the voltage at the control end of the switch tube Q2 increases, and the conduction current of the switch tube Q2 increases.
[0040] Through the above negative feedback regulation process, the current of the LED lamp is stabilized within the set current range.
[0041] Each LED lamp includes a plurality of LED lamps connected in series. The LED lamp has the advantages of high brightness, low energy consumption, long service life, small size, and can provide sufficient light for the inside of the pipeline. The first subtraction circuit is composed of resistors R6, R7, R1, and an operational amplifier U1A. By adjusting the resistance values of resistors R6, R7, and R1, the amplification factor of the first subtraction circuit can be adjusted.
[0042] Therefore, by connecting the current regulating element in series in the multi-path LED lamp branch of the light source module, parallel current distribution of the multi-path LED lamp can be realized, and the uniform brightness of each part of the light source module can be ensured, thereby ensuring the timeliness and accuracy of pipeline monitoring.
[0043] Referring to Figure 1 In an exemplary embodiment of the present disclosure, a voltage follower is provided between the output end of the first subtraction circuit and the control end of the switch tube Q2.
[0044] In this embodiment, the voltage follower is composed of an operational amplifier U1B. By providing a voltage follower between the output end of the first subtraction circuit and the control end of the switch tube Q2, impedance matching can be achieved, and signal transmission can be improved.
[0045] Referring to Figure 1 In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further includes a potentiometer RP1, a resistor R3, and a potentiometer RP2,
[0046] The first end of the potentiometer RP2 is connected to the first power supply, the second end of the potentiometer RP2 is connected to the first end of the potentiometer RP1 through the resistor R3, and the second end of the potentiometer RP1 is grounded.
[0047] The first end of the potentiometer RP1 is the first reference voltage.
[0048] In the embodiment, the potentiometer RP1, the resistor R3 and the potentiometer RP2 form a series voltage dividing circuit, the terminal voltage of the potentiometer RP1 is the first reference voltage UREF1, and the size of the first reference voltage can be adjusted by adjusting the resistance values of the potentiometer RP1 and the potentiometer RP2.
[0049] In an exemplary embodiment of the present disclosure, the light source module further comprises a DC-DC circuit and a driving chip, the input end of the DC-DC circuit is used to be connected with the battery, the output end of the DC-DC circuit is the first power supply end and the second power supply end,
[0050] The DC-DC circuit internally comprises a power tube, the input end of the driving chip is connected with the controller, and the output end of the driving chip is connected to the control end of the power tube.
[0051] In the embodiment, the light source module is powered by the battery, and the DC-DC circuit can raise the battery voltage to a set voltage level to provide power supply for the light source module.
[0052] With reference to Figure 1 , the DC-DC circuit can adopt a BOOST circuit structure composed of an inductor L1, a power tube Q1, a diode D1 and a capacitor C1, and the output voltage of the DC-DC circuit can be adjusted by adjusting the duty cycle of the power tube Q1. The driving chip U4 is arranged between the controller and the control end of the power tube Q1, which plays a role of current amplification and can realize reliable driving of the power tube Q1.
[0053] From the above, it can be concluded that, in the embodiment, the DC-DC circuit is arranged between the battery and the multiple LED lamps, the battery voltage can be converted to a set voltage level, and the reliable work of the multiple LED lamps is ensured.
[0054] With reference to Figure 2 , in an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises a first comparator, the first input end of the first comparator is connected with the first end of the sampling resistor RC1, the second input end of the first comparator is connected with the second end of the potentiometer RP2, and the output end of the first comparator is connected to the enable end of the driving chip.
[0055] In the embodiment, the second end of the potentiometer RP2 can serve as the second reference voltage UREF2. When the current of one of the LED lamps is greater than a set value, the voltage at the first end of the sampling resistor RC1 is greater than the second reference voltage UREF2. The first comparator U3 outputs a high level signal to the enable end of the driving chip U4, the driving chip U4 is turned off, and the power transistor Q1 is turned off in time, thereby avoiding damage to the multiple LED lamps.
[0056] From the above, it can be concluded that in the embodiment, the setting of the first comparator U3 can turn off the output voltage of the DC-DC circuit in time when overcurrent failure occurs in the multiple LED lamps, thereby avoiding damage to the multiple LED lamps caused by overcurrent failure.
[0057] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises:
[0058] A plurality of water level detection modules, the plurality of water level detection modules are used for detecting water levels at a plurality of positions in the subway station, and the plurality of water level detection modules are respectively in communication connection with the monitoring center.
[0059] In the embodiment, the plurality of water level detection modules are distributed at different positions in the subway station, such as entrances, passages, platforms, tunnels and other areas prone to water accumulation, and can comprehensively cover the areas to be monitored, thereby achieving multi-point real-time monitoring of the water levels in the subway station. The water level detection modules are in communication connection with the monitoring center, and can timely and accurately transmit the collected water level data to the monitoring center, so that the staff can remotely and in real time master the water level conditions in the station.
[0060] Once the water level at a certain position abnormally rises or exceeds the warning value, the staff of the monitoring center can take timely countermeasures.
[0061] In an exemplary embodiment of the present disclosure, the subway flood prevention monitoring system further comprises:
[0062] A plurality of flow detection modules, the plurality of flow detection modules are used for detecting flows of a plurality of drainage pipes in the subway station, and the plurality of flow detection modules are respectively in communication connection with the monitoring center.
[0063] In the embodiment, the plurality of flow detection modules are distributed in different drainage pipes in the subway station, and these pipes can include station main drainage pipes, interval tunnel drainage pipes, entrance passage drainage pipes and other key positions. By monitoring the flows of the drainage pipes at different positions, the flow conditions of the drainage system in the station can be comprehensively mastered. For example, by comparing the real-time flows of the pipes with the designed flows, it can be quickly determined which pipes have insufficient drainage capacity and which pipes are in good operation.
[0064] Therefore, the embodiment can help the staff to determine whether the drainage system is normally operated by detecting the flow data of the drainage pipes. Therefore, the embodiment can help the staff to determine whether the drainage system is normally operated by detecting the flow data of the drainage pipes.
[0065] The above examples are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.
Claims
1. A subway flood control monitoring system, characterized in that, This includes a pipe endoscope that communicates with a monitoring center. The pipe endoscope includes a light source module, a camera, and a communication module. The light source module includes multiple LEDs connected in parallel. One LED includes a switching transistor Q2, a sampling resistor RC1, and a first subtraction circuit. The anode of the LED is connected to a first power supply terminal, the cathode of the LED is connected to a first terminal of the switching transistor Q2, the second terminal of the switching transistor Q2 is connected to a first terminal of the sampling resistor RC1, and the second terminal of the sampling resistor RC1 is connected to a second power supply terminal. The first end of the sampling resistor RC1 is connected to the first input terminal of the first subtraction circuit, the second input terminal of the first subtraction circuit is connected to the first reference voltage, and the output terminal of the first subtraction circuit is connected to the control terminal of the switching transistor Q2.
2. The subway flood control monitoring system as described in claim 1, characterized in that, A voltage follower is provided between the output terminal of the first subtraction circuit and the control terminal of the switching transistor Q2.
3. The subway flood control monitoring system as described in claim 1, characterized in that, It also includes potentiometer RP1, resistor R3, and potentiometer RP2. The first terminal of potentiometer RP2 is connected to a first power supply, and the second terminal of potentiometer RP2 is connected to the first terminal of potentiometer RP1 through resistor R3. The second terminal of potentiometer RP1 is grounded. The first terminal of potentiometer RP1 is the first reference voltage.
4. A subway flood control monitoring system as described in claim 3, characterized in that, The light source module also includes a DC-DC circuit and a driver chip. The input terminal of the DC-DC circuit is used to connect to the battery, and the output terminal of the DC-DC circuit is the first power supply terminal and the second power supply terminal. The DC-DC circuit includes a power transistor. The input terminal of the driver chip is connected to the controller, and the output terminal of the driver chip is connected to the control terminal of the power transistor.
5. A subway flood control monitoring system as described in claim 4, characterized in that, It also includes a first comparator, the first input terminal of which is connected to the first terminal of the sampling resistor RC1, the second input terminal of which is connected to the second terminal of the potentiometer RP2, and the output terminal of which is connected to the enable terminal of the driver chip.
6. A subway flood control monitoring system as described in claim 1, characterized in that, Also includes: Multiple water level detection modules are used to detect the water level at multiple locations within the subway station, and each of the multiple water level detection modules is communicatively connected to the monitoring center.
7. A subway flood control monitoring system as described in claim 1, characterized in that, Also includes: Multiple flow detection modules are used to detect the flow of multiple drainage pipes in the subway station, and each of the multiple flow detection modules is communicatively connected to the monitoring center.