Range hood control system and range hood control system control method

Abstract

The present invention discloses a range hood control system and a control method for the range hood control system. The range hood control system includes an outdoor unit, at least one range hood, and at least one sound sensor. The outdoor unit includes a control module, and the sound sensor is communicatively connected to the control module. The sound sensor is disposed in a flue. The sound sensor is configured to detect sound intensity at a corresponding location in the flue and transmit the sound intensity to the control module. The control module is configured to determine the operating status of the corresponding range hood based on the sound intensity. The present invention uses the sound sensor to detect the sound intensity at the corresponding location in the flue and determines the operating status of the range hood based on the sound intensity. Monitoring the operating status of the range hood is independent of the range hood itself, and replacing the range hood does not affect the operation of the sound sensor, thereby saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent household appliances, and in particular to a range hood control system and a control method of the range hood control system. Background Art

[0002] At present, the range hood, as a household appliance used to purify the kitchen environment, has become one of the indispensable devices for ordinary families. Currently, in high-rise buildings in cities, some use a public flue as the kitchen flue for each household. That is, the range hoods of each household in the building are connected to the public flue, and a fan is installed at the top of the public flue to actively exhaust the oil fumes in the public flue. In order to better exhaust the oil fumes in the public flue, it is necessary to know the operating status of the range hood in the public flue. Currently, the operating status of the indoor range hood is generally detected by installing a detection device on the indoor range hood. This method is somewhat dependent on the indoor range hood. If the indoor range hood is replaced or the detection device is manually removed, the operating status of the indoor range hood cannot be monitored. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that it is difficult to monitor the operating status of a range hood, and to provide a range hood control system and a control method for the range hood control system.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a range hood control system, the range hood control system comprising an outdoor unit, at least one range hood and at least one sound sensor, the outdoor unit comprising a control module, the sound sensor being communicatively connected to the control module, and the sound sensor being arranged in a flue;

[0006] The sound sensor is used to detect the sound intensity at the corresponding position in the flue and transmit the sound intensity to the control module;

[0007] The control module is used to determine the operating state of the corresponding range hood according to the sound intensity.

[0008] Preferably, the control module is further configured to determine the working status of the outdoor unit according to the operating status of each range hood.

[0009] Preferably, the control module is further configured to determine a working gear of the range hood according to the sound intensity when it is determined that the operating state of the range hood is the on state.

[0010] Preferably, each range hood also includes a check valve, each check valve is respectively arranged at the joint between the exhaust pipe and the flue in the corresponding range hood, all check valves are communicatively connected to the control module, and the control module is also used to control the air outlet angle of the check valve according to the operating status of the range hood.

[0011] Preferably, the sound sensors correspond to the range hoods one-to-one, and the sound sensors are specifically arranged at positions in the flue corresponding to the corresponding range hoods.

[0012] Preferably, the control module is specifically used to control the air outlet angles of all check valves according to the operating status of the range hood.

[0013] Preferably, the control module is specifically configured to control the air outlet angle of a target check valve according to an operating state of the range hood, wherein the target check valve is any one of all the check valves.

[0014] Preferably, during the communication between the check valve and the control module, the check valve is configured to only receive data, and the control module is configured to only send data.

[0015] Preferably, the sound sensor is specifically arranged at the air outlet of the corresponding range hood or inside the smoke pipe in the smoke duct.

[0016] The present invention also provides a control method for a range hood control system, which is implemented using the aforementioned range hood control system. The control method comprises the following steps:

[0017] Using a sound sensor to detect the sound intensity at a corresponding position in the flue;

[0018] The operating state of the range hood is determined according to the sound intensity.

[0019] The positive progressive effect of the present invention is that the present invention detects the sound intensity at the corresponding position in the flue through a sound sensor, determines the operating status of the range hood based on the sound intensity, and the monitoring of the operating status of the range hood is not dependent on the range hood body. Replacing the range hood does not affect the operation of the sound sensor, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the range hood control system provided in Example 1 of the present invention.

[0021] Figure 2 This is a structural diagram of a range hood control system provided in Example 1 of the present invention.

[0022] Figure 3 This is a flow chart of a control method for a range hood control system provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0024] Example 1

[0025] This embodiment provides a range hood control system, such as Figure 1 As shown, the range hood control system includes an outdoor unit 101 , at least one range hood 102 and at least one sound sensor 103 . The outdoor unit 101 includes a control module 1011 , and the sound sensor 103 is in communication with the control module 1011 .

[0026] Specifically, in this embodiment, the sound sensor is provided in the flue to detect the sound intensity at a corresponding position in the flue and transmit the sound intensity to the control module, which is used to determine the operating status of each range hood according to the sound intensity.

[0027] In one specific implementation example, the sound sensors correspond to the range hoods one by one, and the sound sensors are specifically arranged at positions in the flue corresponding to the corresponding range hoods. In this example, each sound sensor is used to detect the intensity of the sound generated by the corresponding range hood.

[0028] In another specific implementation example, one sound sensor corresponds to multiple range hoods. In this example, each sound sensor is used to detect the intensity of the sound generated by the range hood in the corresponding area.

[0029] Specifically, in this embodiment, the control module can determine the operating state of the outdoor unit based on the operating state of each range hood. The control module can obtain the operating rate of the range hood based on the operating state of each range hood, and then determine the operating state of the outdoor unit based on the operating rate and / or the operating state of each range hood. The control module can also determine the operating gear of the range hood in the on state based on the sound intensity after determining that the operating state of the range hood is the on state. In a specific example, if there are three operating gears when the range hood is in the on state, namely the first gear, the second gear and the third gear, four thresholds can be preset in the control module, where the first threshold is used to determine whether the range hood is turned on. If the sound intensity is greater than the first threshold, the range hood is judged to be in the on state. If the sound intensity is less than the first threshold, the range hood is judged to be in the off state. The remaining three thresholds are used to determine the range hood's operating position. After determining the range hood is in operation, the sound intensity is compared with the other three thresholds. If the sound intensity is greater than the second threshold but less than the third threshold, the range hood is considered to be in the first position. If the sound intensity is greater than the third threshold but less than the fourth threshold, the range hood is considered to be in the second position. If the sound intensity is greater than the fourth threshold, the range hood is considered to be in the third position. The value of each threshold can be determined based on the actual installation location of the sound sensor and the operating volume of the range hood. The outdoor unit can be a rooftop fan, and the power-on rate is the ratio of the number of range hoods in the power-on state to the total number of range hoods in the range hood control system.

[0030] Specifically, in this embodiment, each range hood may further include a check valve, each located at the junction between the exhaust pipe and the flue of the corresponding range hood. All check valves are communicatively connected to the control module, which is further configured to control the air outlet angle of the corresponding check valve based on the operating status of each range hood. The control module can determine the operating rate of each range hood based on the operating status of each range hood and then determine the air outlet angle of the check valve based on the operating rate and / or the operating status of each range hood. In a specific implementation, the control module can control the air outlet angle of the check valve by sending a control instruction to the check valve. After determining that the range hood is in the on state, the control module can also determine the operating position of the range hood in the on state based on the sound intensity. Generally speaking, the air outlet angles of check valves on different floors tend to increase or decrease, and check valves on adjacent floors may also use the same air outlet angle.

[0031] Specifically, in this embodiment, the sound sensor can be installed at the air outlet of the range hood or inside the smoke pipe of the flue. The specific installation location can be determined according to actual conditions. Each sound sensor can communicate with the control module via a communication bus to upload the sound intensity to the control module. Alternatively, the sound intensity can be uploaded to the control module via wireless communication. The communication bus can be CANBus or RS485, and the wireless communication can be LoRa (Long Range Radio), Bluetooth, 2.4 GHz wireless technology, etc.

[0032] Specifically, in this embodiment, Figure 2 As shown, if the sound sensor is located inside the smoke duct in the flue and transmits sound intensity to the control module 1011 via the communication bus 4, the range hood control system requires a fixed cable 1, a fixed buckle 2, and a lower end fastener 3. The fixed cable 1 can also be replaced by a steel cable. The fixed cable 1 is used to assist in securing the sound sensor 103 distributed within the common flue. The fixed buckle 2 is used to secure the communication bus 4 and the sound sensor 103. The lower end fastener 3 can be secured with a fixed weight or directly cast to keep the fixed cable 1 taut. In practice, other methods can be used to achieve the lower end fastener depending on the actual situation. At the bottom of the smoke duct, a ground floor / basement air supply port is opened, and at the top of the smoke duct, an outdoor unit 101 is installed. The spacing of the sound sensors within the flue can be determined based on the required detection accuracy. The smaller the spacing, the higher the detection accuracy and the more accurate the startup rate. For example, the sound sensors can be installed at intervals of 10 meters or at intervals corresponding to the height of each floor.

[0033] Specifically, in this embodiment, during communication between the check valves and the control module, the check valves can be configured to only receive data, while the control module can be configured to only send data, to avoid data overlap and improve communication success rates. The control module wirelessly transmits control instructions to all check valves or a target check valve to control the air outlet angle of the check valves.

[0034] Specifically, in this embodiment, the format of the control instruction sent by the control module to the check valve may be: "header + length + command + data + checksum". In specific practice, the format of the control instruction may be adjusted according to the actual project.

[0035] Specifically, in this embodiment, when the control module sends a control instruction to the check valves, it can use the control instruction to control the air outlet angles of all check valves at once, or it can use the control instruction to control the air outlet angle of a target check valve. The number of target check valves can be one or multiple, and the content of the data portion of the control instruction will differ in these two cases. If there are M range hoods in the range hood control system, each of the M range hoods is numbered, and the range hood number serves as the communication address. If there are N range hood air outlet angles, each corresponding to a single or multiple check valves, space is reserved in the control instruction for N groups of data. Each group of data consists of three parts: a starting address, an ending address, and an air outlet angle. The starting address is the number of the first range hood set to that air outlet angle, and the ending address is the number of the last range hood set to that air outlet angle. All range hoods with numbers between the starting and ending addresses are set to that air outlet angle. Both the range hood number and the air outlet angle can be expressed in hexadecimal. The starting address of the first group of data starts from 0x01, the ending address is less than M, and the starting address of the next group of data is continuous with the ending address of the previous group of data.

[0036] When the control module uses a control instruction to control the airflow angles of all check valves at once, if the check valves of 64 range hoods have a total of 10 airflow angles, the data portion of the control instruction contains 10 sets of data. The first set of data has a starting address of 0x01, an ending address of 0x05, and an airflow angle of 0x3c. The second set of data has a starting address of 0x06, an ending address of 0x0f, and an airflow angle of 0x46. The tenth set of data has a starting address of 0x20, an ending address of 0x40, and an airflow angle of 0x5a. The data portion of the control instruction is: 0x01, 0x05, 0x3c, 0x06, 0x0f, 0x46, ..., 0x20, 0x40, 0x5a. In this way, the control module can control the airflow angles of all check valves at once with a single control instruction.

[0037] When the control module controls the air outlet angle of the target check valve through the control instruction, it can specify a set of data to be sent separately, or specify multiple sets of data to be sent simultaneously. For example, if you only want to control the air outlet angle of the check valve of the first range hood, the starting address of the data is 0x01, the ending address is also 0x01, the air outlet angle is 0x3c, and the data part of the control instruction is: 0x010x050x3c; if you only want to control the air outlet angle of the check valve of the first to fifth range hoods, the starting address of the data is 0x01, the ending address is 0x05, the air outlet angle is 0x3c, and the data part of the control instruction is: 0x010x050x3c. x050x3c; if you want to simultaneously control the airflow angles of the check valves for range hoods 1 through 5 and those for range hoods 32 through 64, the first set of data starts at 0x01, ends at 0x05, and has an airflow angle of 0x3c. The second set of data starts at 0x20, ends at 0x40, and has an airflow angle of 0x5a. The data portion of the control instruction is: 0x010x050x3c0x200x400x5a. This allows the control module to control the airflow angles of all the target check valves simultaneously with a single control instruction, providing more targeted control and facilitating the removal of oil smoke from the flue.

[0038] This embodiment provides a range hood control system, which detects the sound intensity at the corresponding position in the flue through a sound sensor and determines the operating status of the range hood based on the sound intensity. The monitoring of the operating status of the range hood is not dependent on the range hood body. Replacing the range hood does not affect the operation of the sound sensor, saving costs.

[0039] Example 2

[0040] This embodiment provides a control method for a range hood control system, which is implemented using the range hood control system described in Example 1. Figure 3 As shown, the control method includes the following steps:

[0041] S2001. Detect the sound intensity at the corresponding position in the flue using a sound sensor.

[0042] S2002: Determine the operating state of the range hood according to the sound intensity.

[0043] Specifically, in this embodiment, the control method may further include: determining the operating state of the outdoor unit based on the operating state of each range hood. The control module may obtain the operating rate of the range hood based on the operating state of each range hood, and then determine the operating state of the outdoor unit based on the operating rate and / or the operating state of each range hood. The control module may also determine the operating gear of the range hood in the on state based on the sound intensity after determining that the operating state of the range hood is the on state. In a specific example, if there are three operating gears when the range hood is in the on state, namely the first gear, the second gear and the third gear, four thresholds may be preset in the control module, wherein the first threshold is used to determine whether the range hood is on. If the sound intensity is greater than the first threshold, the range hood is determined to be in the on state. If the sound intensity is less than the first threshold, the range hood is determined to be in the off state. The remaining three thresholds are used to determine the range hood's operating position. After determining the range hood is in operation, the sound intensity is compared with the other three thresholds. If the sound intensity is greater than the second threshold but less than the third threshold, the range hood is considered to be in the first position. If the sound intensity is greater than the third threshold but less than the fourth threshold, the range hood is considered to be in the second position. If the sound intensity is greater than the fourth threshold, the range hood is considered to be in the third position. The value of each threshold can be determined based on the actual installation location of the sound sensor and the operating volume of the range hood. The outdoor unit can be a rooftop fan, and the power-on rate is the ratio of the number of range hoods in the power-on state to the total number of range hoods in the range hood control system.

[0044] Specifically, in this embodiment, the control method may further include: controlling the air outlet angle of the check valve according to the operating status of the range hood. The control module may obtain the operating rate of the range hood according to the operating status of each range hood, and then determine the air outlet angle of the check valve according to the operating rate and / or the operating status of each range hood. In a specific implementation, the control module may control the air outlet angle of the check valve by sending a control instruction to the check valve. The control module may also determine the working gear of the range hood in the on state according to the sound intensity after determining that the operating state of the range hood is the on state. Generally speaking, the air outlet angles of the check valves on different floors show an increasing or decreasing trend, and there may also be a situation where the check valves on adjacent floors use the same air outlet angle.

[0045] Specifically, in this embodiment, the format of the control instruction sent by the control module to the check valve may be: "header + length + command + data + checksum". In specific practice, the format of the control instruction may be adjusted according to the actual project.

[0046] Specifically, in this embodiment, when the control module sends a control instruction to the check valves, it can use the control instruction to control the air outlet angles of all check valves at once, or it can use the control instruction to control the air outlet angle of a target check valve. The number of target check valves can be one or multiple, and the content of the data portion of the control instruction will differ in these two cases. If there are M range hoods in the range hood control system, each of the M range hoods is numbered, and the range hood number serves as the communication address. If there are N range hood air outlet angles, each corresponding to a single or multiple check valves, space is reserved in the control instruction for N groups of data. Each group of data consists of three parts: a starting address, an ending address, and an air outlet angle. The starting address is the number of the first range hood set to that air outlet angle, and the ending address is the number of the last range hood set to that air outlet angle. All range hoods with numbers between the starting and ending addresses are set to that air outlet angle. Both the range hood number and the air outlet angle can be expressed in hexadecimal. The starting address of the first group of data starts from 0x01, the ending address is less than M, and the starting address of the next group of data is continuous with the ending address of the previous group of data.

[0047] When the control module uses a control instruction to control the airflow angles of all check valves at once, if the check valves of 64 range hoods have a total of 10 airflow angles, the data portion of the control instruction contains 10 sets of data. The first set of data has a starting address of 0x01, an ending address of 0x05, and an airflow angle of 0x3c. The second set of data has a starting address of 0x06, an ending address of 0x0f, and an airflow angle of 0x46. The tenth set of data has a starting address of 0x20, an ending address of 0x40, and an airflow angle of 0x5a. The data portion of the control instruction is: 0x01, 0x05, 0x3c, 0x06, 0x0f, 0x46, ..., 0x20, 0x40, 0x5a. In this way, the control module can control the airflow angles of all check valves at once with a single control instruction.

[0048] When the control module controls the air outlet angle of the target check valve through the control instruction, it can specify a set of data to be sent separately, or specify multiple sets of data to be sent simultaneously. For example, if you only want to control the air outlet angle of the check valve of the first range hood, the starting address of the data is 0x01, the ending address is also 0x01, the air outlet angle is 0x3c, and the data part of the control instruction is: 0x010x050x3c; if you only want to control the air outlet angle of the check valve of the first to fifth range hoods, the starting address of the data is 0x01, the ending address is 0x05, the air outlet angle is 0x3c, and the data part of the control instruction is: 0x010x050x3c. x050x3c; if you want to simultaneously control the airflow angles of the check valves for range hoods 1 through 5 and those for range hoods 32 through 64, the first set of data starts at 0x01, ends at 0x05, and has an airflow angle of 0x3c. The second set of data starts at 0x20, ends at 0x40, and has an airflow angle of 0x5a. The data portion of the control instruction is: 0x010x050x3c0x200x400x5a. This allows the control module to control the airflow angles of all the target check valves simultaneously with a single control instruction, providing more targeted control and facilitating the removal of oil smoke from the flue.

[0049] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A range hood control system, characterized in that: The range hood control system includes an outdoor unit, at least one range hood and at least one sound sensor, wherein the outdoor unit includes a control module, the sound sensor is communicatively connected to the control module, and the sound sensor is arranged in the flue; The sound sensor is used to detect the sound intensity at the corresponding position in the flue and transmit the sound intensity to the control module; The control module is used to determine the operating state of the range hood according to the sound intensity; Each range hood further includes a check valve, each check valve being respectively provided at the joint between the exhaust pipe and the flue in the corresponding range hood, and all the check valves being communicatively connected to the control module, and the control module being further configured to send a control instruction to the check valve according to the operating state of the range hood to control the air outlet angle of the check valve; The check valve of the range hood has a total of N air outlet angles, and N groups of data space are reserved in the control instruction. Each group of data consists of a starting address, an ending address and an air outlet angle. The starting address is the number of the first range hood set to the air outlet angle, and the ending address is the number of the last range hood set to the air outlet angle. The range hoods with numbers between the starting address and the ending address are all set to the air outlet angle.

2. The range hood control system according to claim 1, wherein: The control module is further configured to determine the operating status of the outdoor unit according to the operating status of each range hood.

3. The range hood control system according to claim 1, wherein: The control module is further configured to determine a working gear of the range hood according to the sound intensity when it is determined that the operating state of the range hood is the on state.

4. The range hood control system according to claim 1, wherein: The sound sensors correspond to the range hoods one by one, and the sound sensors are specifically arranged at positions in the flue corresponding to the corresponding range hoods.

5. The range hood control system according to claim 1, wherein: The control module is specifically used to control the air outlet angles of all check valves according to the operating status of the range hood.

6. The range hood control system according to claim 1, wherein: The control module is specifically configured to control the air outlet angle of a target check valve according to the operating state of the range hood, wherein the target check valve is any one of all the check valves.

7. The range hood control system according to claim 1, wherein: During the communication between the check valve and the control module, the check valve is configured to only receive data, and the control module is configured to only send data.

8. The range hood control system according to any one of claims 1 to 7, characterized in that: The sound sensor is specifically arranged at the air outlet of the corresponding range hood or inside the smoke pipe in the smoke duct.

9. A control method for a range hood control system, characterized in that: The control method is implemented using the range hood control system according to any one of claims 1 to 8, and includes the following steps: Using a sound sensor to detect the sound intensity at a corresponding position in the flue; The operating state of the range hood is determined according to the sound intensity.

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