Refrigerator

Abstract

The utility model discloses a kind of motor home water tank monitoring systems, it includes control module, display module and monitoring module;Monitoring module includes at least one water tank monitoring component and is used for monitoring the posture sensor of motor home posture;Water tank monitoring component includes the temperature sensor for monitoring the temperature of water tank and the water level sensor for monitoring the water level of water tank, temperature sensor and water level sensor are connected with control module communication;Posture sensor is connected with control module communication;Display module is connected with control module communication.The utility model can effectively, accurately monitor the state of water tank.

Description

Technical Field

[0001] This utility model relates to the field of RVs, and in particular to an RV water tank monitoring system. Background Technology

[0002] In the use of existing RVs, accurately monitoring the water tank status is crucial for RV users' water usage. However, existing RVs generally only have a water level sensor installed in the water tank to monitor the water level. But when the RV is unbalanced, the water level sensor alone cannot accurately measure the water level. In addition, when the ambient temperature is too low and the water tank freezes, the water level sensor cannot detect the freezing of the RV water tank.

[0003] In view of the above problems, it is necessary to study a RV water tank monitoring system that can effectively and accurately monitor the status of the water tank. Utility Model Content

[0004] The purpose of this invention is to provide a RV water tank monitoring system that can effectively and accurately monitor the status of the water tank.

[0005] To achieve the above objectives, the solution of this utility model is: A mobile home water tank monitoring system includes a control module, a display module, and a monitoring module. The monitoring module includes at least one water tank monitoring component and an attitude sensor for monitoring the mobile home's attitude. The water tank monitoring component includes a temperature sensor for monitoring the temperature of the water tank and a water level sensor for monitoring the water level in the water tank. The temperature sensor and the water level sensor are communicatively connected to the control module. The attitude sensor is communicatively connected to the control module. The display module is communicatively connected to the control module.

[0006] The water level sensor includes a signal processing module and a monitoring and installation module. The monitoring and installation module includes a cuttable flexible monitoring layer and an adhesive layer. The flexible monitoring layer includes a flexible substrate, multiple monitoring electrodes, and two grounding electrodes. A first mating side and a second mating side are formed on both sides of the flexible substrate. Each monitoring electrode is arranged at intervals along the height direction of the flexible substrate on the first mating side, and each monitoring electrode is electrically connected to the signal processing module. The two grounding electrodes are mated to the first mating side of the flexible substrate along the height direction and are of equal length. The two grounding electrodes are located on both sides of each monitoring electrode and are connected together to the signal processing module and grounded. The adhesive layer is composite with the first mating side of the flexible substrate. The signal processing module is communicatively connected to the control module.

[0007] The flexible detection layer also includes two reference electrodes, which are fitted to the second mating side of the flexible substrate. The spacing between the two reference electrodes is opposite to each detection electrode. The signal processing module is electrically connected to each reference electrode of the flexible detection layer.

[0008] Each reference electrode is completely misaligned with each ground electrode.

[0009] The attitude sensor is a three-axis gyroscope.

[0010] The RV water tank monitoring system also includes an alarm module electrically connected to the control module.

[0011] The alarm module includes a speaker and indicator lights that are electrically connected to the control module.

[0012] The RV water tank monitoring system also includes a communication module electrically connected to the control module, which includes a wireless communication module and / or a wired communication module.

[0013] The wireless communication module includes a Bluetooth communication module and / or a WiFi communication module.

[0014] The wired communication module includes a CAN communication module.

[0015] After adopting the above solution, the working principle of this utility model is as follows: The control module monitors the RV's posture using attitude sensors to determine if it is level. Simultaneously, it monitors each water tank individually using monitoring components, calculating and displaying the corresponding status information based on the judgment results and monitoring data. Specifically, when the control module detects a water tank temperature of 0 degrees Celsius or less using a temperature sensor, it determines that the tank is frozen and controls the display module to show that the tank is frozen. Conversely, when the temperature sensor detects a water tank temperature greater than 0 degrees Celsius, the control module monitors the water level using a water level sensor, calculates the current water percentage, and displays the current water percentage. The control module calculates the current water volume percentage of the water tank as follows: If the control module detects that the RV is in a level state through the attitude sensor, the control module uses the water level detected by the water level sensor as the current water level of the water tank, and divides the current water level of the water tank by the theoretical maximum water level of the water tank (i.e., the height of the water tank) to obtain the current water volume percentage of the water tank; if the control module detects that the RV is in a non-level state through the attitude sensor, the control module calculates the current water volume percentage of the water tank based on the water level detected by the water level sensor, the height of the water tank, the width of the water tank, and the water surface angle of the water tank (i.e., the angle between the water surface of the water tank and the horizontal plane) detected by the attitude sensor.

[0016] As described above, this invention also uses a temperature sensor to monitor the water tank's temperature to determine if the tank is frozen, improving the accuracy of water level monitoring. Furthermore, this invention calculates the current water percentage based on whether the RV is level, ensuring the accuracy of the current water percentage. In summary, this invention can effectively and accurately monitor the water tank's condition. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the principle of this utility model.

[0018] Figure 2 This is an exploded view of the structure of the water level sensor of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the water level sensor of this utility model. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the structure of the water level sensor of this utility model. Figure 2 .

[0021] Figure 5 This is a schematic diagram of the flexible detection layer of this utility model. Figure 1 .

[0022] Figure 6 This is a schematic diagram of the flexible detection layer of this utility model. Figure 2 .

[0023] Figure 7 for Figure 6 Enlarged view of point a.

[0024] Figure 8 This is a diagram of the water tank when the RV is stationary and not horizontal.

[0025] Label Explanation: Control module A, Display module B, Monitoring module C, attitude sensor C1, water tank monitoring component C2, temperature sensor 1. Water level sensor 2, Signal processing module 21, The monitoring module 22 includes a flexible monitoring layer 221, a flexible substrate 2211, a first mating side 22111, a second mating side 22112, a monitoring electrode 2212, a reference electrode 2213, a grounding electrode 2214, a data acquisition circuit 2215, an adhesive layer 222, and an insulating coating 223. Waterproof casing 23, Paste layer 24, Alarm module D, speaker D1, indicator light D2, Wireless communication module E1, Wired communication module E2. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] like Figures 1 to 7 As shown, this utility model discloses a RV water tank monitoring system, which includes a control module A, a display module B, and a monitoring module C. The monitoring module C includes at least one water tank monitoring component C2 and an attitude sensor C1 for monitoring the RV's attitude. The attitude sensor C1 is communicatively connected to the control module A. Each water tank monitoring component C2 is respectively set for each water tank of the RV (such as a fresh water tank, a grey water tank, and a black water tank). Each water tank monitoring component C2 is used to monitor the temperature and water level of the corresponding water tank. Specifically, each water tank monitoring component C2 includes a temperature sensor 1 for monitoring the water tank temperature and a water level sensor 2 for monitoring the water tank level. The temperature sensor 1 and the water level sensor 2 are communicatively connected to the control module A. The display module B is communicatively connected to the control module A.

[0028] The working principle of this utility model is as follows: Control module A monitors the RV's posture using attitude sensor C1 to determine if the RV is level. Simultaneously, control module A monitors each water tank individually using water tank monitoring components C2. Based on the judgment results and monitoring data, it calculates and obtains corresponding status information, which is then displayed on display module B. Specifically, when control module A detects that the temperature of a corresponding water tank is less than or equal to 0 degrees Celsius using temperature sensor 1, it determines that the water tank is frozen and controls display module B to display that the water tank is frozen. Conversely, when control module A detects that the temperature of a corresponding water tank is greater than 0 degrees Celsius using temperature sensor 1, it monitors the water level of the tank using water level sensor 2 and calculates the current water percentage, which is then displayed on display module B. The control module A calculates the current water volume percentage of the water tank as follows: If the control module A detects that the RV is in a horizontal state through the attitude sensor C1, the control module A uses the water level detected by the water level sensor 2 as the current water level of the water tank, and divides the current water level of the water tank by the theoretical maximum water level of the water tank (i.e., the height of the water tank) to obtain the current water volume percentage of the water tank; if the control module A detects that the RV is in a non-horizontal state through the attitude sensor C1, the control module A calculates the current water volume percentage of the water tank based on the water level detected by the water level sensor 2, the height of the water tank, the width of the water tank, and the water surface angle of the water tank (i.e., the angle between the water surface of the water tank and the horizontal plane) detected by the attitude sensor C1.

[0029] As described above, this invention also uses temperature sensor 1 to monitor the temperature of the water tank to determine whether the tank is frozen, thus improving the accuracy of water level monitoring. Furthermore, this invention calculates the current water percentage based on whether the RV is level, ensuring the accuracy of the current water percentage. In summary, this invention can effectively and accurately monitor the state of the water tank.

[0030] Cooperate Figure 8 As shown, when the RV is not in a level position, the method for calculating the current water tank percentage is as follows: Given the height b and width a of the water tank (measured and input at the factory, or measured and input by the user), control module A obtains the water level h monitored by water level sensor 2 and the water surface angle α of the water tank through water level sensor 2 and attitude sensor C1; then the current water volume percentage w of the water tank is calculated as: w = s 当前 / s 总 ;s 总 =a·b;s 当前 =(b2+h)·a / 2; b2=h-b1=h-(tanα*a).

[0031] In an embodiment of this invention, the water level sensor 2 may include a signal processing module 21 and a monitoring and installation module 22. The monitoring and installation module 22 includes a flexible monitoring layer 221 and an adhesive layer 222 that are composite and cuttable. The flexible monitoring layer 221 is used to monitor the water level in the water tank and is electrically connected to the signal processing module 21. The signal processing module 21 is communicatively connected to the control module A, and the signal processing module 21 can be electrically connected to the control module A via wired or wireless communication. When the water level sensor 2 of this invention is applied to a water tank, the adhesive layer 222 is used to bond the monitoring and installation module 22 to the outer wall of the water tank. This installation method is convenient and does not require damage to the structure of the water tank. In addition, this invention allows for the cutting of the flexible monitoring layer 221 and the adhesive layer 222 to adapt to different water tank structures, resulting in good adaptability.

[0032] In an embodiment of this utility model, the flexible monitoring layer 221 may include a flexible substrate 2211, a plurality of monitoring electrodes 2212, and two grounding electrodes 2214; a first mating side surface 22111 and a second mating side surface 22112 are respectively formed on both sides of the flexible substrate 2211; each monitoring electrode 2212 is sequentially and spaced apart along the height direction of the flexible substrate 2211 on the first mating side surface 22111 of the flexible substrate 2211, and each monitoring electrode 2212 is electrically connected to the signal processing module 21; the two grounding electrodes 2214 are mated to the first mating side surface 22111 of the flexible substrate 2211 and the two grounding electrodes 2214 are of equal length, and the two grounding electrodes 2214 are respectively located on both sides of each monitoring electrode 2212, and the two grounding electrodes 2214 are together electrically connected to the signal processing module 21. The adhesive layer 222 is composite with the first mating side surface 22111 of the flexible substrate 2211.

[0033] The working principle of the water level sensor 2 of this utility model is as follows: each monitoring electrode 2212 and the grounding electrode 2214 form a capacitor, and the side wall of the water tank and the water in the water tank are the dielectric of the capacitor; and the capacitors formed by each monitoring electrode 2212 and the grounding electrode 2214 are independent of each other; thus, the signal processing module 21 detects and calculates the sum of the capacitance values ​​of each capacitor formed by each monitoring electrode 2212 and the grounding electrode 2214, and then calculates the water level in the water tank according to the sum of the capacitance values ​​of each capacitor formed by each monitoring electrode 2212 and the grounding electrode 2214, thereby realizing the monitoring of the water level in the water tank; and moreover, Cutting the flexible monitoring layer 221 will not affect the capacitance detection of the capacitor formed by the remaining monitoring electrode 2212 and the grounding electrode 2214 of the flexible monitoring layer 221 (even if a portion of a monitoring electrode 2212 is cut off, the remaining monitoring electrode 2212 will still form a capacitor with the grounding electrode 2214, and the capacitance value of the capacitor formed by the remaining monitoring electrode 2212 and the grounding electrode 2214 can still be detected), ensuring that the present invention can still perform normal water level detection after the flexible monitoring layer 221 is cut off; in addition, there are two grounding electrodes 2214, and the two grounding electrodes 2214 are respectively located on both sides of each monitoring electrode 2212. This setting can avoid the monitoring electrode 2212 forming non-deterministic capacitance with other objects, which would affect the detection accuracy. Before leaving the factory, the water level sensor 2 of the present invention will be written with multiple capacitance-water level correspondence tables, each corresponding to a water tank model. The source of each capacitance-water level reference table is as follows: First, the water level sensor 2 of this invention is installed on the outer wall of the corresponding model of water tank (the water tank is initially empty). Then, water is added to the water tank sequentially, each time raising the water level in the tank by a set height (e.g., 0.0 mm or 0.0 mm). After each addition of water, the sum of the capacitance values ​​of each capacitor formed by each monitoring electrode 2212 and each grounding electrode 2214 obtained by the signal processing module 21 is recorded. In this way, the capacitance-water level reference table corresponding to that model of water tank is obtained. Subsequently, when the water level sensor 2 of this invention is used, it calls the corresponding capacitance-water level reference table according to the different models of water tanks. This allows the water level sensor 2 to calculate the corresponding water level by using the sum of the capacitance values ​​of each capacitor formed by each monitoring electrode 2212 and each grounding electrode 2214 and the called capacitance-water level reference table.

[0034] In an embodiment of this utility model, the flexible monitoring layer 221 further includes two reference electrodes 2213, which are fitted onto the second mating side 22112 of the flexible substrate 2211. The spacing between the two reference electrodes 2213 is opposite to that of each monitoring electrode 2212. The signal processing module 21 is electrically connected to each of the reference electrodes 2213 of the flexible monitoring layer 221. The two reference electrodes 2213 constitute a reference capacitor, and the interference experienced by this reference capacitor is the same as the interference experienced by the capacitor formed by each monitoring electrode 2212 and the ground electrode 2214. Thus, when calculating the capacitance value of the capacitor formed by each monitoring electrode 2212 and the ground electrode 2214, formula C can be used. 计算 =C 监测 -C 参考 C 计算 C represents the calculated capacitance value of the capacitor formed by the monitoring electrode 2212 and the grounding electrode 2214. 监测 The monitored value, C, represents the capacitance of the capacitor formed by the monitoring electrode 2212 and the grounding electrode 2214. 参考 The monitored value represents the capacitance of the reference capacitor formed by the two reference electrodes 2213; subtracting these values ​​removes interference. The sum of the capacitance values ​​of the capacitors formed by each monitoring electrode 2212 and the ground electrode 2214 is the calculated value C of the capacitor formed by each monitoring electrode 2212 and the ground electrode 2214. 计算 The summation of the values ​​of the capacitor formed by monitoring electrode 2212 and ground electrode 2214, and the capacitor formed by the two reference electrodes 2213, can be obtained by the RC charge-discharge method.

[0035] In the embodiments of this utility model, each reference electrode 2213 and each ground electrode 2214 are completely misaligned to avoid affecting the anti-interference effect of the reference electrode 2213.

[0036] In an embodiment of this utility model, the flexible monitoring layer 221 further includes a plurality of acquisition lines 2215. Each acquisition line 2215 is fitted to the second mating side 22112 of the flexible substrate 2211, and each acquisition line 2215 is connected to each monitoring electrode 2212 through a via. The same end of each acquisition line 2215 is connected to the signal processing module 21. Each acquisition line 2215 is parallel to each other and is set with equal length and width. This arrangement ensures that the capacitance value generated by each acquisition line 2215 is the same, avoiding the difference in capacitance value generated by each acquisition line 2215, which would affect the accuracy of monitoring the capacitance value of the capacitor formed by each monitoring electrode 2212 and the ground electrode 2214.

[0037] In an embodiment of this utility model, the adjacent sides of two adjacent monitoring electrodes 2212 of the flexible monitoring layer 221 are inclined to the height and horizontal directions of the flexible substrate 2211 (e.g., Figure 5 (As shown in the diagram). This configuration ensures that the water level line corresponding to each water level intersects with at least one monitoring electrode 2212, thereby ensuring that each water level corresponds independently to the sum of the capacitance values ​​of the capacitors formed by each monitoring electrode 2212 and each grounding electrode 2214, achieving continuous water level monitoring. Furthermore, this configuration allows adjacent monitoring electrodes 2212 to be staggered, resulting in a more uniform distribution of the electric field between the two monitoring electrodes. Simultaneously, the impact of water level changes on the entire electric field is more balanced, allowing each water level change to be more effectively reflected in capacitance changes, further improving monitoring sensitivity. The adjacent sides of two adjacent monitoring electrodes 2212 are parallel to each other.

[0038] In this embodiment of the invention, the signal processing module 21 is located below the bottom of the monitoring and mounting module 22, thus reducing the overall width of the water level sensor 2. It should be noted that the signal processing module 21 can also be located on the bottom side of the monitoring and mounting module 22, allowing the bottom of the monitoring and mounting module 22 to be aligned with the bottom of the water tank.

[0039] In this embodiment of the invention, the signal processing module 21 is built into a waterproof housing 23 to effectively protect the signal processing module 21. The waterproof housing 23 can be potted with adhesive. The waterproof housing 23 is laminated with an adhesive layer 24 to fix the waterproof housing 23 to the water tank by bonding. The adhesive layer 24 and the bonding layer 222 can be made of acrylic adhesive or silicone adhesive, which have the advantages of being waterproof and resistant to aging.

[0040] In an embodiment of this utility model, the signal processing module 21 may have a built-in MCU processor for data acquisition, calculation and storage.

[0041] In an embodiment of this utility model, the monitoring installation module 22 may further include an insulating coating 223 coated on the flexible monitoring layer 221 away from the adhesive layer 222. In this way, the insulating coating 223 and the adhesive layer 222 can protect both sides of the flexible monitoring layer 221. The insulating coating 223 may have hydrophobic properties, and the flexible monitoring layer 221 may be made using a flexible circuit board.

[0042] In an embodiment of this utility model, the attitude sensor C1 is a three-axis gyroscope, which can monitor whether the RV is level and monitor the water surface angle of the water tank.

[0043] In an embodiment of this utility model, the RV water tank monitoring system further includes an alarm module D electrically connected to the control module A. When the water level in the tank is detected to be too low or too high, or when ice formation is detected in the tank, the control module A controls the alarm module D to issue an alarm to promptly remind the user. The alarm module D includes a speaker D1 and an indicator light D2 electrically connected to the control module A, which can provide audible and visual alarms.

[0044] In embodiments of this invention, the RV water tank monitoring system may further include a communication module E electrically connected to the control module A. The communication module E includes a wireless communication module E1 and a wired communication module E2. The wireless communication module E1 may include a Bluetooth communication module and / or a WiFi communication module; the wired communication module E2 may include a CAN communication module. This configuration allows a smart terminal to communicate with the control module A via the wireless communication module E1, thereby enabling the smart terminal to obtain the water tank status. Furthermore, a display module B can communicate with the control module A via the communication module E. The display module B may be a touchscreen installed inside the RV, allowing the user to issue commands and modify parameters to the control module A. It should be noted that the wireless communication module E1 and the wired communication module E2 are not limited to being configured simultaneously; this invention may also use only one of them.

[0045] In an embodiment of this utility model, the control module A can be a microcontroller, which can be integrated with the wireless communication module E1 and the wired communication module E2; while the temperature sensor 1 and the attitude sensor C1 can communicate with the control module A through wired or wireless communication.

[0046] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A recreational vehicle water tank monitoring system, characterized by: It includes a control module, a display module, and a monitoring module; The monitoring module includes at least one water tank monitoring component and an attitude sensor for monitoring the RV's attitude; the water tank monitoring component includes a temperature sensor for monitoring the temperature of the water tank and a water level sensor for monitoring the water level in the water tank, and the temperature sensor and water level sensor are communicatively connected to the control module; the attitude sensor is communicatively connected to the control module. The display module and the control module are connected for communication.

2. The RV water tank monitoring system of claim 1, wherein: The water level sensor includes a signal processing module and a monitoring and installation module. The monitoring and installation module includes a cuttable flexible monitoring layer and an adhesive layer. The flexible monitoring layer includes a flexible substrate, multiple monitoring electrodes, and two grounding electrodes. A first mating side and a second mating side are formed on both sides of the flexible substrate. Each monitoring electrode is arranged at intervals along the height direction of the flexible substrate on the first mating side, and each monitoring electrode is electrically connected to the signal processing module. The two grounding electrodes are mated to the first mating side of the flexible substrate along the height direction and are of equal length. The two grounding electrodes are located on both sides of each monitoring electrode and are connected to and grounded to the signal processing module together. The adhesive layer is composite with the first mating side of the flexible substrate. The signal processing module is communicatively connected to the control module.

3. The RV water tank monitoring system of claim 2, wherein: The flexible detection layer also includes two reference electrodes, which are fitted to the second mating side of the flexible substrate. The spacing between the two reference electrodes is opposite to each detection electrode. The signal processing module is electrically connected to each reference electrode of the flexible detection layer.

4. The RV water tank monitoring system of claim 3, wherein: Each reference electrode is completely misaligned with each ground electrode.

5. The RV water tank monitoring system of claim 1, wherein: The attitude sensor is a three-axis gyroscope.

6. The RV water tank monitoring system of claim 1, wherein: It also includes an alarm module that is electrically connected to the control module.

7. The RV water tank monitoring system of claim 6, wherein: The alarm module includes a speaker and indicator lights that are electrically connected to the control module.

8. The RV water tank monitoring system of claim 1, wherein: It also includes a communication module electrically connected to the control module, the communication module including a wireless communication module and / or a wired communication module.

9. The RV water tank monitoring system of claim 8, wherein: The wireless communication module includes a Bluetooth communication module and / or a WiFi communication module.

10. The RV water tank monitoring system of claim 8, wherein: The wired communication module includes a CAN communication module.

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