Water leakage monitoring system with high safety protection
By introducing isolated power supplies and opto-isolation modules into the water leakage monitoring system, a highly secure water leakage monitoring system is constructed, solving the electrical safety hazards and low liquid level detection problems of traditional systems, and realizing effective monitoring and control of non-container components.
Patent Information
- Application Number
- CN202423081204.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In existing water immersion monitoring systems, traditional converters use extra-low voltage power supplies, but these are not safe extra-low voltages, posing risks of electrical short circuits and electric shock. They cannot effectively detect low-level water leaks, and traditional level switches are not suitable for non-container components.
A highly secure water leak monitoring system is constructed by using isolated power supply modules and opto-isolation modules, combined with an ACDC power supply module. The system includes a leak detector, a leak converter, a primary power supply, and a main control board. The communication module is protected by an optocoupler.
The insulation capability of the leak detector and converter has been improved, reducing the risk of electrical short circuits and electric shock, and enabling effective detection and safe control of low-level water leaks.
Smart Images
Figure CN223539124U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water leakage monitoring technology, specifically to a highly secure water leakage monitoring system. Background Technology
[0002] In many industrial and civilian applications, accurate water level detection is crucial for ensuring the normal operation of equipment and preventing safety accidents. For conventional water containers, level switches (such as float switches and magnetic switches) are typically used to detect the water level. These switches can automatically switch states when the water level reaches a preset value, thereby achieving control or alarm functions.
[0003] However, traditional level switches are not suitable for non-container components (such as electrical cabinets and cable trenches). In these environments, even a small amount of water leakage can lead to serious malfunctions or accidents. Due to the extremely low water level (e.g., only a few millimeters), ordinary level switches cannot effectively detect such low levels. Therefore, a specially designed water immersion monitoring system is required to perform the detection task.
[0004] The power supplies used in current flood monitoring systems are typically extra-low voltage (ELV), but not safe extra-low voltage (EVV). This means that the internal electronic circuitry of the converter still relies on a standard DC power supply connected to the 220VAC mains. Such a power supply configuration provides only basic insulation protection, and in the event of an electrical leak, it could lead to an electrical short circuit or electric shock risk, posing a safety hazard. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by providing a highly secure water leakage monitoring system.
[0006] The purpose of this utility model is achieved through the following technical solution: a high-safety water leakage monitoring system, including a water leakage detector, a water leakage converter, a first power supply and a main control board;
[0007] The leakage converter includes a first control module, an isolated power supply module, an opto-isolation module, a switch module, and a first communication module; the main control board is provided with a second control module and a second communication module; the leakage detector is electrically connected to the first control module;
[0008] The first power supply is connected to the input terminal of the isolation power module; the output terminal of the isolation power module is used to supply power to the first control module, the opto-isolation module, the switch module, and the first communication module; the first control module controls the second control module through the switch module; the first communication module and the second communication module are respectively connected to the first control module and the second control module; the first communication module communicates with the second communication module through the opto-isolation module.
[0009] The present invention is further configured such that the main control board is provided with a second power supply; the second power supply is used to supply power to the second control module and the second communication module.
[0010] The present invention is further configured such that the second power supply is an ACDC power module; the input terminal of the second power supply is connected to the mains power.
[0011] The present invention is further configured such that the first power supply is an ACDC power module; the input terminal of the first power supply is connected to the mains power.
[0012] The present invention is further configured such that the isolated power supply module is a DC-DC power supply module.
[0013] The present invention is further configured such that the opto-isolation module includes a first optocoupler and a second optocoupler; the first communication module is connected to the second communication module through the first optocoupler and the second optocoupler respectively.
[0014] The present invention is further configured such that the switching output terminal of the first optocoupler is connected to the output terminal of the isolation power supply module and the first communication module respectively; the control input terminal of the first optocoupler is connected to the second communication module and ground respectively.
[0015] The switching output terminal of the second optocoupler is connected to the output terminal of the isolation power supply module and the first communication module, respectively; the control input terminal of the second optocoupler is connected to the second communication module and ground, respectively.
[0016] The present invention is further configured such that both the first communication module and the second communication module are 485 modules.
[0017] The present invention is further configured such that the switching module includes a relay, a resistor R1, a resistor R2, and a transistor Q1; the relay includes a switching part and a control part;
[0018] The first control module is connected to the base of transistor Q1 through resistor R1; the emitter of transistor Q1 is grounded; the collector of transistor Q1 is connected to the output terminal of the isolation power supply module through the control unit; one end of the switch is grounded; the other end of the switch is connected to the output terminal of the second power supply through resistor R2; and the other end of the switch is connected to the second control module.
[0019] The present invention is further configured such that the switching module also includes a diode D1 connected in parallel with the control unit.
[0020] The beneficial effects of this utility model are as follows: By setting an isolation power supply between the first power supply and the water leakage converter, this utility model can effectively improve the insulation capability of the water leakage detector and the water leakage converter; in addition, by setting an opto-isolation module between the first communication module and the second communication module, the water leakage converter also has a strong insulation protection capability between the main control board and the power grid. Attached Figure Description
[0021] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.
[0022] Figure 1 This is the circuit schematic diagram of this utility model;
[0023] The components are: 1. Leakage detector; 2. Leakage converter; 21. First control module; 22. Isolation power supply module; 23. First communication module; 3. First power supply; 4. Main control board; 41. Second control module; 42. Second communication module; 43. Second power supply; 51. First optocoupler; 52. Second optocoupler; 61. Switching unit; 62. Control unit. Detailed Implementation
[0024] The present invention will be further described in conjunction with the following embodiments.
[0025] Depend on Figure 1 As can be seen, the high-safety water leakage monitoring system described in this embodiment includes a water leakage detector 1, a water leakage converter 2, a first power supply 3, and a main control board 4.
[0026] The leakage converter 2 includes a first control module 21, an isolation power supply module 22, an opto-isolation module, a switch module, and a first communication module 23; the main control board 4 is provided with a second control module 41 and a second communication module 42; the leakage detector 1 is electrically connected to the first control module 21;
[0027] The first power supply 3 is connected to the input terminal of the isolation power module 22; the output terminal of the isolation power module 22 is used to supply power to the first control module 21, the opto-isolation module, the switch module, and the first communication module 23; the first control module 21 controls the second control module 41 through the switch module; the first communication module 23 and the second communication module 42 are respectively connected to the first control module 21 and the second control module 41; the first communication module 23 communicates with the second communication module 42 through the opto-isolation module.
[0028] Specifically, in the high-safety water leakage monitoring system described in this embodiment, the leak detector 1 can be a leak detection rope or a leak detection electrode. When the leak detector 1 detects a leak, it converts this non-electrical signal into an electrical signal and transmits it to the first control module 21. The first control module 21 controls the switch module to operate, thereby enabling the second control module 41 of the main control board 4 to receive the leak signal. After sensing the leak, the main control board 4 controls the actuator to take further action.
[0029] This embodiment effectively improves the insulation capability of the water leakage converter 2 by setting an isolation power supply between the first power supply 3 and the water leakage converter 2; in addition, an opto-isolation module is set between the first communication module 23 and the second communication module 42, so that the water leakage converter 2 also has strong insulation protection capability between the main control board 4 and the power grid.
[0030] This embodiment describes a high-security water leakage monitoring system, in which the main control board 4 is equipped with a second power supply 43; the second power supply 43 is used to power the second control module 41 and the second communication module 42. This arrangement facilitates power supply to the main control board 4.
[0031] In this embodiment, a high-safety water leak monitoring system is described, wherein the second power supply 43 is an AC / DC power module; the input terminal of the second power supply 43 is connected to the mains power. Through this configuration, the AC power from the mains can be converted into DC power to supply power to the main control board 4.
[0032] This embodiment describes a high-safety water leak monitoring system, in which the first power supply 3 is an AC / DC power module; the input terminal of the first power supply 3 is connected to the mains power. Through this configuration, the AC power from the mains can be converted into DC power to supply power to the leak detector 2.
[0033] The water leakage monitoring system with high security protection described in this embodiment uses a DC-DC power module 22 as the isolation power module. This configuration effectively improves the insulation capability of the leakage converter 2.
[0034] The water leakage monitoring system with high security protection described in this embodiment includes a photoelectric isolation module comprising a first optocoupler 51 and a second optocoupler 52; the first communication module 23 is connected to the second communication module 42 through the first optocoupler 51 and the second optocoupler 52 respectively.
[0035] In this embodiment, by setting a first optocoupler 51 and a second optocoupler 52, bidirectional two-wire communication between the first communication module 23 and the second communication module 42 can be realized through the two optocouplers.
[0036] In this embodiment of the high-safety water leak monitoring system, the switching output terminal of the first optocoupler 51 is connected to the output terminal of the isolated power supply module 22 and the first communication module 23, respectively; the control input terminal of the first optocoupler 51 is connected to the second communication module 42 and ground, respectively; the switching output terminal of the second optocoupler 52 is connected to the output terminal of the isolated power supply module 22 and the first communication module 23, respectively; the control input terminal of the second optocoupler 52 is connected to the second communication module 42 and ground, respectively. In this embodiment of the high-safety water leak monitoring system, both the first communication module 23 and the second communication module 42 are 485 modules.
[0037] Specifically, when the output signal A or B of the main control board 4 is at a high level, the LED at the input of the optocoupler control is turned on, which in turn turns on the transistor at the output of the optocoupler switch. This enables the positive phase transmission of the level signal and opto-isolation, thus providing strong insulation protection between the water leakage converter 2 and the power grid through the main control board 4.
[0038] The high-safety water leakage monitoring system described in this embodiment includes a switch module comprising a relay, resistors R1 and R2, and a transistor Q1; the relay comprises a switch part 61 and a control part 62; in this embodiment, by setting the relay, the creepage distance between the switch part 61 and the control part 62 of the relay can meet the requirements of additional insulation.
[0039] The first control module 21 is connected to the base of transistor Q1 through resistor R1; the emitter of transistor Q1 is grounded; the collector of transistor Q1 is connected to the output terminal of isolation power supply module 22 through control unit 62; one end of switch unit 61 is grounded; the other end of switch unit 61 is connected to the output terminal of second power supply 43 through resistor R2; the other end of switch unit 61 is connected to second control module 41.
[0040] Specifically, when the water leak detector 1 detects a leak, it converts this non-electrical signal into an electrical signal and transmits it to the first control module 21. The first control module 21 outputs a high level to the transistor Q1, which turns on the transistor Q1, thereby giving the control unit 62 of the relay a voltage, which in turn causes the switch unit 61 of the relay to close, so that the second control module 41 of the main control board 4 receives the water leak signal. After sensing the water leak, the main control board 4 controls the actuator to take further action.
[0041] The high-safety water leakage monitoring system described in this embodiment further includes a diode D1 connected in parallel with the control unit 62 in the switching module. This configuration enhances the overall stability of the switching module.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A highly secure water leakage monitoring system, characterized in that: It includes a water leakage detector (1), a water leakage converter (2), a first power supply (3), and a main control board (4); The leakage converter (2) includes a first control module (21), an isolation power supply module (22), an opto-isolation module, a switch module, and a first communication module (23); the main control board (4) is provided with a second control module (41) and a second communication module (42); the leakage detector (1) is electrically connected to the first control module (21); The first power supply (3) is connected to the input terminal of the isolation power supply module (22); the output terminal of the isolation power supply module (22) is used to supply power to the first control module (21), the opto-isolation module, the switch module and the first communication module (23); the first control module (21) controls the second control module (41) through the switch module; the first communication module (23) and the second communication module (42) are respectively connected to the first control module (21) and the second control module (41); the first communication module (23) communicates with the second communication module (42) through the opto-isolation module.
2. The high-security water leakage monitoring system according to claim 1, characterized in that: The main control board (4) is provided with a second power supply (43); the second power supply (43) is used to supply power to the second control module (41) and the second communication module (42).
3. The high-security water leakage monitoring system according to claim 2, characterized in that: The second power supply (43) is an AC / DC power module; the input terminal of the second power supply (43) is connected to the mains power.
4. The high-security water leakage monitoring system according to claim 1, characterized in that: The first power supply (3) is an AC / DC power module; the input terminal of the first power supply (3) is connected to the mains power.
5. A high-security water leakage monitoring system according to claim 1, characterized in that: The isolated power supply module (22) is a DC-DC power supply module.
6. A high-security water leakage monitoring system according to claim 1, characterized in that: The opto-isolation module includes a first optocoupler (51) and a second optocoupler (52); the first communication module (23) is connected to the second communication module (42) through the first optocoupler (51) and the second optocoupler (52).
7. A high-security water leakage monitoring system according to claim 6, characterized in that: The switching output terminal of the first optocoupler (51) is connected to the output terminal of the isolation power supply module (22) and the first communication module (23) respectively; the control input terminal of the first optocoupler (51) is connected to the second communication module (42) and ground respectively. The switching output terminal of the second optocoupler (52) is connected to the output terminal of the isolation power supply module (22) and the first communication module (23) respectively; the control input terminal of the second optocoupler (52) is connected to the second communication module (42) and ground respectively.
8. A high-security water leakage monitoring system according to claim 1, characterized in that: Both the first communication module (23) and the second communication module (42) are 485 modules.
9. A high-security water leakage monitoring system according to claim 2, characterized in that: The switching module includes a relay, resistors R1 and R2, and transistor Q1; the relay includes a switching part (61) and a control part (62); The first control module (21) is connected to the base of transistor Q1 through resistor R1; the emitter of transistor Q1 is grounded; the collector of transistor Q1 is connected to the output terminal of the isolation power supply module (22) through the control unit (62); one end of the switch unit (61) is grounded; the other end of the switch unit (61) is connected to the output terminal of the second power supply (43) through resistor R2; the other end of the switch unit (61) is connected to the second control module (41).
10. A high-security water leakage monitoring system according to claim 9, characterized in that: The switching module also includes a diode D1 connected in parallel with the control unit (62).