An intelligent exhaust fan control circuit with induction and an intelligent exhaust fan controller

Abstract

The application discloses a kind of intelligent exhaust fan control circuit with induction and intelligent exhaust fan controller, comprising: control circuit, overall control is implemented;Transmitting and receiving signal circuit, the transmitting and receiving signal circuit is connected with control circuit;Induction circuit, the induction circuit is connected with control circuit;Digital display screen control circuit, the transmitting and receiving signal circuit is connected between the transmitting and receiving signal circuit and control circuit;Digital display screen starting circuit, the digital display screen starting circuit is connected with digital display screen control circuit;Pickup circuit, the digital display screen control circuit is connected with pickup circuit.Compared with prior art, gas condition near control box can be detected, and gas concentration is displayed on digital display screen in real time.At the same time, sound warning can be realized to improve safety prompt effect, which is beneficial to improve the safety of kitchen operation.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust fan control boxes, and in particular to an intelligent exhaust fan control circuit with sensors and an intelligent exhaust fan controller. Background Technology

[0002] Exhaust fans are the main components of kitchen ventilation systems, and their function is to drive the air in the kitchen to the outside.

[0003] In existing exhaust fan controls, a push-button switch is commonly used to operate the fan, controlling its start and stop. This simple control method has the problem that it cannot provide a gas alarm, posing a certain safety hazard, and requires further improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent exhaust fan control circuit and an intelligent exhaust fan controller with sensors, which can display the gas concentration in real time on a digital display screen; at the same time, with the help of a speaker, it can realize sound warning to improve the safety reminder function and help improve the safety of kitchen operations.

[0005] A sensor-equipped intelligent exhaust fan control circuit designed for this purpose includes:

[0006] The control circuit implements overall control.

[0007] A signal transmitting and receiving circuit, wherein the signal transmitting and receiving circuit is connected to the control circuit;

[0008] A sensing circuit, which is connected to a control circuit;

[0009] The digital display control circuit is connected to the control circuit via the transmitting and receiving signal circuit.

[0010] A digital display screen startup circuit, which is connected to the digital display screen control circuit;

[0011] The microphone circuit is connected to the digital display control circuit.

[0012] Preferably, the control circuit includes a control chip U12 and a Bluetooth and ANT protocol dual-mode communication chip S6, with pins 38 and 44 of the control chip U12 connected to pin 1 of the Bluetooth and ANT protocol dual-mode communication chip S6, respectively.

[0013] Preferably, the control circuit is connected to a SIM user identification module, which includes a user identification chip U11 and a bridge rectifier group D6 connected together.

[0014] Preferably, pin 29 of the control circuit is also connected to a power management circuit, which includes a 23rd transistor Q23, a power management chip U10, a VDD5V terminal, a 3.88V_EN terminal, a 3.88V terminal, and a fifth bidirectional diode D5. The 3.88V_EN terminal is connected to the base of the 23rd transistor Q23, the collector of the 23rd transistor Q23 is connected to pin 1 of the power management chip U10, the VDD5V terminal is connected to pin 4 of the power management chip U10, pin 3 of the power management chip U10 is connected to the 3.88V terminal, and the 3.88V terminal is connected to the fifth bidirectional diode D5.

[0015] Preferably, the sensing circuit includes an LS1 terminal, a 104th capacitor C104, a 97th resistor R97, a MIC+ terminal, a 105th capacitor C105, a 98th resistor R98, and a MIC- terminal. The LS1 terminal is connected to a gas detection sensor. The LS1 terminal, the 104th capacitor C104, the 97th resistor R97, and the MIC+ terminal are connected in series. Pin 2 of the LS1 terminal, the 105th capacitor C105, the 98th resistor R98, and the MIC- terminal are connected in series. Pins 1 and 2 of the LS1 terminal are respectively connected to a 7th bidirectional diode D7 and an 8th bidirectional diode D8. The common terminal between the 7th bidirectional diode D7 and the 8th bidirectional diode D8 is connected to a 35th capacitor C35. The 35th capacitor C35 is also connected to a 94th resistor R94. The 94th resistor R94 is connected to the MIC_BIAS terminal.

[0016] Preferably, the digital display screen control circuit is connected to a digital display switch circuit and a chip connector. The digital display switch circuit includes a KEY terminal connected to a fifth switch S5. The KEY terminal is connected to the fifth switch S5 and is connected to the digital display screen control circuit.

[0017] Preferably, the digital display screen startup circuit includes an LCD_EN terminal, a thirteenth transistor Q13, a VDD5V terminal, a fourteenth field-effect transistor Q14, an LCD_5V terminal, a seventh LCD driver chip U7, an eighth LCD driver chip U8, and a digital display screen LCD1. The seventh LCD driver chip U7 and the eighth LCD driver chip U8 are respectively connected to the digital display screen LCD1. Pin 17 of the seventh LCD driver chip U7 and pin 17 of the eighth LCD driver chip U8 are respectively connected to the LCD_5V terminal. The LCD_5V terminal is connected to the drain (D) terminal of the fourteenth field-effect transistor Q14. The source (S) terminal of the fourteenth field-effect transistor Q14 is connected to the VDD5V terminal. The gate (G) terminal of the fourteenth field-effect transistor Q14 is connected to the collector of the thirteenth transistor Q13. The base of the thirteenth transistor Q13 is connected to the LCD_EN terminal.

[0018] Preferably, the pickup circuit includes a pickup chip U6, a fourth connector J4, a third switch S3, a fourth switch S4, a tenth field-effect transistor Q10, a VO_DATA terminal, a VO_RESET terminal, a VDD5V terminal, a ninth transistor Q9, and a VO_EN terminal. The fourth connector J4 is also connected to the pickup. Pins 1 and 2 of the fourth connector J4 are connected to pins 3 and 4 of the pickup chip U6, respectively. The VO_DATA terminal and the VO_RESET terminal are connected to pins 6 and 7 of the pickup chip U6, respectively. Pin 1 of the fourth switch S4 is connected to pin 6 of the pickup chip U6. Pin 5 of the pickup chip U6 is connected to the drain (D) terminal of the tenth field-effect transistor Q10. The source (S) terminal of the tenth field-effect transistor Q10 is connected to the VDD5V terminal. Pins 3 and 1 of the third switch S3 are connected to pins 1 and 2 of the pickup chip U6, respectively. The VO_EN terminal is connected to the base of the ninth transistor Q9.

[0019] Preferably, the transmit / receive signal circuit includes an MCU_RX terminal, an MCU_TX terminal, a nineteenth transistor Q19, a twenty-third transistor Q20, a V_GLOBAL_1V8 terminal, a MAIN_TXD terminal, and a MAIN_RXD terminal. The MCU_RX terminal is connected to the collector of the nineteenth transistor Q19, the MCU_TX terminal is connected to the emitter of the twenty-third transistor Q20, there are two V_GLOBAL_1V8 terminals, which are respectively connected to the bases of the nineteenth transistor Q19 and the twenty-third transistor Q20, the MAIN_TXD terminal is connected to the emitter of the nineteenth transistor Q19, and the MAIN_RXD terminal is connected to the collector of the twenty-third transistor Q20.

[0020] Preferably, the digital display control circuit is connected to a first auxiliary connection circuit, which includes a VO_DATA terminal, a VO_DIN terminal, a 55th resistor R55, a VO_RESET terminal, a VO_RIN terminal, and a 58th resistor R58. The VO_DATA terminal and the VO_DIN terminal are connected through the 55th resistor R55, and the VO_RESET terminal and the VO_RIN terminal are connected through the 58th resistor R58.

[0021] Preferably, the digital display control circuit is connected to a second auxiliary connection circuit. The second auxiliary connection circuit 1005 includes an ADIM terminal, an AD_OUT terminal, a sixty-fifth resistor R65, an ASCLK terminal, an ASCLK_OUT terminal, a sixty-eighth resistor R68, a BDIM terminal, a BD_OUT terminal, a seventy-first resistor R71, a BSCLK terminal, a BSCLK_OUT terminal, and a seventy-fourth resistor R74. The ADIM terminal and the AD_OUT terminal are connected through the sixty-fifth resistor R65, the ASCLK terminal and the ASCLK_OUT terminal are connected through the sixty-eighth resistor R68, the BDIM terminal and the BD_OUT terminal are connected through the seventy-first resistor R71, and the BSCLK terminal and the BSCLK_OUT terminal are connected through the seventy-fourth resistor R74.

[0022] Preferably, the digital display control circuit includes a digital display control chip U9, a 27th capacitor C27, a 22nd resistor R22, a 23rd resistor R23, a BAT+ terminal, a U9VDD terminal, and a VDD5V terminal. Pin 4 of the digital display control chip U9 is connected to the U9VDD terminal. The common terminal of one end of the 27th capacitor C27, the 22nd resistor R22, and the 23rd resistor R23 is connected to the U9VDD terminal. The VDD5V terminal is connected to the other end of the 22nd resistor R22, and the BAT+ terminal is connected to the other end of the 23rd resistor R23.

[0023] Preferably, a USB power supply circuit is also included, which supplies power to pin 21 of the digital display control chip U9.

[0024] Preferably, the USB power supply circuit includes a first connector J1, a DC 5V terminal, a first step-down chip U1, a CHRG_IN terminal, a BAT3.7 terminal, a second diode D2, a fifteenth resistor R15, a DC 5V_DET terminal, a first switch S1, and a second connector J2. Pins 3 and 4 of the first switch S1 are connected to pin 1 of the second connector J2, and pins 1 and 2 of the first switch S1 are connected to the BAT3.7 terminal. The BAT3.7 terminal is connected to pin 5 of the first step-down chip U1. Pin 4 of chip U1 is connected to the DC5V terminal, which is connected to pin 5 of the first connector J1. Pin 6 of the first step-down chip U1 is connected to the CHRG_IN terminal, which is connected to pin 2 of the digital display control chip U9. The DC5V terminal is also connected to the second diode D2. The other end of the second diode D2 is connected to the fifteenth resistor R15. The other end of the fifteenth resistor R15 is connected to the DC5V_DET terminal, which is connected to pin 1 of the digital display control chip U9.

[0025] Preferably, the digital display screen control chip U9 is connected to a voltage divider detection circuit 1101. The voltage divider detection circuit 1101 includes a first field-effect transistor Q1, a BAT_DET terminal, a BAT+3.7 terminal, a POWER_ON terminal, and a ground terminal GND. The D terminal of the first field-effect transistor Q1 is connected to the BAT_DET terminal and the BAT+3.7 terminal, the G terminal of the first field-effect transistor Q1 is connected to the POWER_ON terminal, and the S terminal of the first field-effect transistor Q1 is connected to the ground terminal GND. The BAT+3.7 terminal of the voltage divider detection circuit 1101 is connected to pin 5 of the first step-down chip U1, and the BAT_DET terminal of the voltage divider detection circuit 1101 is connected to pin 21 of the digital display screen control chip U9.

[0026] Preferably, the digital display screen control chip U9 is connected to a second auxiliary connector circuit. The second auxiliary connector circuit includes a third connector J3, a twenty-second field-effect transistor Q22, a VDD5V terminal, a twenty-first transistor Q21, and a ZC13_EN terminal. Pin 1 of the third connector J3 is connected to the drain (D) terminal of the twenty-second field-effect transistor Q22. The source (S) terminal of the twenty-second field-effect transistor Q22 is connected to the VDD5V terminal. The gate (G) terminal of the twenty-second field-effect transistor Q22 is connected to the collector (collector) terminal of the twenty-first transistor Q21. The base (base) terminal of the twenty-first transistor Q21 is connected to the ZC13_EN terminal. The ZC13_EN terminal is connected to pin 23 of the digital display screen control chip U9.

[0027] Preferably, the USB power supply circuit is connected to a 5V power supply circuit, which includes a BAT+3.7 terminal, a DC5V terminal, a second field-effect transistor Q2, a DC5V_EN terminal, a second step-down chip U2, and a VDD5V terminal. The BAT+3.7 terminal is connected to the gate (G) terminal of the second field-effect transistor Q2, the drain (D) terminal of the second field-effect transistor Q2, and the source (S) terminal of the second field-effect transistor Q2 is connected to pin 3 of the second step-down chip U2.

[0028] This utility model discloses an intelligent exhaust fan controller, including a housing, a circuit board and a digital display screen connected to the circuit board are disposed inside the housing, the circuit board includes the aforementioned intelligent exhaust fan control circuit with sensing, a display window is disposed on the front side of the housing, the digital display screen is disposed in the display window, the circuit board integrates a power switch and a pairing switch, a hook groove for connecting to a hook is disposed on the back of the housing, and a microphone, a gas detection sensor, a power supply battery and a speaker are disposed inside the housing and respectively connected to the circuit board.

[0029] Preferably, the circuit board integrates a communication card slot for installing a communication card; the outer casing has an opening corresponding to the position of the communication card slot, and a sealing flip cover is provided at the opening.

[0030] Preferably, the circuit board integrates a communication card slot for installing a communication card; the outer casing has an opening corresponding to the position of the communication card slot, and a sealing flip cover is provided at the opening.

[0031] Preferably, the rear inner wall of the housing is provided with a speaker mounting cavity, and a plurality of outwardly penetrating sound holes are evenly distributed in the speaker mounting cavity, and the speaker is fixedly installed in the speaker mounting cavity.

[0032] Preferably, the housing below the speaker mounting cavity has clips spaced vertically, forming a snap-fit ​​space between the clips, and the power supply battery is snapped and fixed within the snap-fit ​​space.

[0033] Preferably, the power switch and the pairing switch are disposed on the upper side of the circuit board, and a toggle switch and a push switch are disposed on the upper side wall of the housing; the toggle switch is slidably disposed relative to the housing in the left and right or in the front and back, and the toggle switch is connected to the power switch to drive the power switch to move left and right or in the front and back; the push switch is disposed vertically relative to the housing, and the lower surface of the push switch presses against the upper surface of the push switch.

[0034] Preferably, the outer casing consists of a front casing and a back plate that are connected to each other.

[0035] Preferably, the back of the outer casing is provided with a hanging bracket, which is provided with a hook and a mounting hole.

[0036] Compared with existing technologies, this invention features a gas detection sensor that can detect the gas situation near the control box and display the gas concentration in real time on a digital display screen. Simultaneously, with the aid of a speaker, it can provide audible warnings, enhancing safety awareness and improving the safety of kitchen operations. Attached Figure Description

[0037] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model.

[0038] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention.

[0039] Figure 3 This is an exploded structural diagram of the present invention.

[0040] Figure 4 This is a schematic diagram of the back structure of the outer shell of this utility model.

[0041] Figure 5 This is a schematic diagram of the structure of the hanging bracket of this utility model.

[0042] Figure 6This is a schematic diagram of the control circuit board of this utility model.

[0043] Figure 7 This is the power management circuit diagram of this utility model.

[0044] Figure 8 This is a circuit diagram of the transmitting and receiving signals of this utility model.

[0045] Figure 9 This is a diagram of the SIM user identification module of this utility model.

[0046] Figure 10 This is the induction circuit diagram of this utility model.

[0047] Figure 11 This is a circuit diagram of the digital display screen control circuit of this utility model.

[0048] Figure 12 This is a circuit diagram of the digital display switch of this utility model.

[0049] Figure 13 This is a circuit diagram of the chip connector of this utility model.

[0050] Figure 14 This is the circuit diagram of the pickup of this utility model.

[0051] Figure 15 This is the first auxiliary connection circuit diagram of this utility model.

[0052] Figure 16 This is the second auxiliary connection circuit diagram of this utility model.

[0053] Figure 17 This is the start-up circuit diagram for the digital display screen of this utility model.

[0054] Figure 18 This is a circuit diagram of the USB power supply for this utility model.

[0055] Figure 19 This is a circuit diagram of the voltage divider detection circuit of this utility model.

[0056] Figure 20 This is the circuit diagram of the second auxiliary connector of this utility model.

[0057] Figure 21 This is the 5V power supply circuit diagram for this utility model.

[0058] Figure 22 This is the power supply circuit diagram for the 433M circuit of this utility model.

[0059] Figure 23 This is the third auxiliary connection circuit diagram of this utility model.

[0060] Figure 24This is the 433M communication circuit diagram of this utility model.

[0061] Figure 25 This is the 315M communication circuit diagram of this utility model.

[0062] Figure 26 This is the fourth connection circuit diagram of this utility model.

[0063] The attached figures are labeled as follows:

[0064] 10. Outer shell, 110. Front shell, 111. Display window, 112. Opening, 112. Back panel, 120. Hook slot, 121. Clip, 122. Clip space, 123. Speaker mounting cavity, 124. Amplification hole, 125. Toggle switch, 130. Press switch, 140. Digital display screen, 20. Circuit board, 30. Charging connector, 310. Communication card slot, 320. Pairing switch, 330. Power switch, 340. Microphone, 40. Gas detection sensor, 50. Power supply battery, 60. Speaker, 70. Hanger, 80. Hook, 801. Hanger mounting hole, 802.

[0065] Control circuit 90, power management circuit 901, signal transmission and reception circuit 902, SIM user identification module 903, sensing circuit 904;

[0066] Digital display control circuit 1000, digital display switch circuit 1001, chip connector 1002, microphone circuit 1003, first auxiliary connection circuit 1004, second auxiliary connection circuit 1005, digital display start circuit 1006;

[0067] USB power supply circuit 1100, voltage divider detection circuit 1101, second auxiliary connector circuit 1102, 5V power supply circuit 1103, charging voltage regulator circuit 1104, third auxiliary connection circuit 1105, 433M communication circuit 1106, 315M communication circuit 1107, fourth connection circuit 1108. Detailed Implementation

[0068] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0069] See page Figures 6 to 26 As shown, a sensor-equipped intelligent exhaust fan control circuit includes:

[0070] Control circuit 90 implements overall control;

[0071] A signal transmitting and receiving circuit 902 is connected to a control circuit 90; the signal transmitting and receiving circuit 902 is used to transmit signals and control the on / off state.

[0072] The sensing circuit 904 is connected to the control circuit 90;

[0073] The digital display control circuit 1000 connects the transmitting and receiving signal circuit 902 to the control circuit 90; the sensing circuit 904 detects the ambient gas conditions and displays the gas concentration on the digital display in real time.

[0074] A digital display screen start-up circuit 1006 is provided, which is connected to the digital display screen control circuit 1000.

[0075] The microphone circuit 1003 is connected to the digital display control circuit. The microphone circuit 1003 is used to collect ambient sound.

[0076] When the sensing circuit 904 detects that the gas concentration has reached a specified value, for example, when the sensing circuit 904 is set to a first-level alarm of 10% LEL (e.g., a methane alarm value of 0.5% by volume) and a second-level alarm of 25% LEL (e.g., a methane alarm value of 1.25% by volume), the sensing circuit 904 feeds back a sensing signal to the control circuit 90. The control circuit 90 then displays the gas concentration parameters through the digital display screen control circuit 1000, serving as a reminder to the user.

[0077] The control circuit 90 described in this circuit includes a control chip U12 and a Bluetooth and ANT protocol dual-mode communication chip S6. Pins 38 and 44 of the control chip U12 are respectively connected to pin 1 of the Bluetooth and ANT protocol dual-mode communication chip S6 to communicate with the Bluetooth module of the smartphone, view the ambient gas concentration status, and provide prompts to the user.

[0078] The control circuit 90 described in this circuit is connected to a SIM subscriber identification module 903, which includes a subscriber identification chip U11 and a bridge rectifier group D6. The SIM subscriber identification module 903 installs a SIM card and performs remote signal transmission.

[0079] Pin 29 of the control circuit 90 described in this circuit is also connected to a power management circuit 901. The power management circuit 901 includes a 23rd transistor Q23, a power management chip U10, a VDD 5V terminal, a 3.88V_EN terminal, a 3.88V terminal, and a fifth bidirectional diode D5. The 3.88V_EN terminal is connected to the base of the 23rd transistor Q23. The collector of the 23rd transistor Q23 is connected to pin 1 of the power management chip U10. The VDD 5V terminal is connected to pin 4 of the power management chip U10. Pin 3 of the power management chip U10 is connected to the 3.88V terminal, which is also connected to the fifth bidirectional diode D5. The power management circuit 901 outputs a 3.88V voltage.

[0080] The sensing circuit 904 described in this circuit includes an LS1 terminal, a 104th capacitor C104, a 97th resistor R97, a MIC+ terminal, a 105th capacitor C105, a 98th resistor R98, and a MIC- terminal. The LS1 terminal is connected to a gas detection sensor 50. The LS1 terminal, the 104th capacitor C104, the 97th resistor R97, and the MIC+ terminal are connected in series. Pin 2 of the LS1 terminal, the 105th capacitor C105, the 98th resistor R98, and the MIC- terminal are also connected in series. Pins 1 and 2 of the LS1 terminal are connected to a 7th bidirectional diode D7 and an 8th bidirectional diode D8, respectively. The common terminal between the 7th bidirectional diode D7 and the 8th bidirectional diode D8 is connected to a 35th capacitor C35. The 35th capacitor C35 is also connected to a 94th resistor R94, which is connected to the MIC_BIAS terminal. The LS1 terminal is connected to the gas detection sensor 50 to detect gas, and the gas signal is fed back to the control circuit 90.

[0081] The digital display control circuit 1000 described in this circuit is connected to a digital display switch circuit 1001 and a chip connector 1002. The digital display switch circuit 1001 includes a KEY terminal connected to a fifth switch S5. The KEY terminal is connected to the fifth switch S5 and is connected to the digital display control circuit 1000.

[0082] The digital display startup circuit 1006 described in this circuit includes an LCD_EN terminal, a thirteenth transistor Q13, a VDD5V terminal, a fourteenth field-effect transistor Q14, an LCD_5V terminal, a seventh LCD driver chip U7, an eighth LCD driver chip U8, and a digital display LCD1. The seventh LCD driver chip U7 and the eighth LCD driver chip U8 are respectively connected to the digital display LCD1. Pin 17 of the seventh LCD driver chip U7 and the eighth LCD driver chip U8 are respectively connected to the LCD_5V terminal. The LCD_5V terminal is connected to the drain (D) terminal of the fourteenth field-effect transistor Q14. The source (S) terminal of the fourteenth field-effect transistor Q14 is connected to the VDD5V terminal. The gate (G) terminal of the fourteenth field-effect transistor Q14 is connected to the collector of the thirteenth transistor Q13. The base of the thirteenth transistor Q13 is connected to the LCD_EN terminal. The digital display screen LCD1 is used for display functions. The seventh LCD driver chip U7 and the eighth LCD driver chip U8 simultaneously control the working state of the digital display screen LCD1. The digital display screen start circuit 1006 controls the working state of the digital display screen control circuit 1000, and the digital display screen control chip U9 controls the working state of the seventh LCD driver chip U7 and the eighth LCD driver chip U8, and uses the first auxiliary connection circuit 1004 to implement signal transmission.

[0083] The pickup circuit 1003 described in this circuit includes a pickup chip U6, a fourth connector J4, a third switch S3, a fourth switch S4, a tenth field-effect transistor Q10, a VO_DATA terminal, a VO_RESET terminal, a VDD5V terminal, a ninth transistor Q9, and a VO_EN terminal. The fourth connector J4 is also connected to a pickup 40. Pins 1 and 2 of the fourth connector J4 are connected to pins 3 and 4 of the pickup chip U6, respectively. The VO_DATA terminal and VDD5V terminal... The O_RESET terminal is connected to pins 6 and 7 of the pickup chip U6. Pin 1 of the fourth switch S4 is connected to pin 6 of the pickup chip U6. Pin 5 of the pickup chip U6 is connected to the drain of the tenth field-effect transistor Q10. The source of the tenth field-effect transistor Q10 is connected to the VDD5V terminal. Pins 3 and 1 of the third switch S3 are connected to pins 1 and 2 of the pickup chip U6, respectively. The VO_EN terminal is connected to the base of the ninth transistor Q9.

[0084] The transmit / receive signal circuit 902 described in this circuit includes an MCU_RX terminal, an MCU_TX terminal, a nineteenth transistor Q19, a twenty-third transistor Q20, a V_GLOBAL_1V8 terminal, a MAIN_TXD terminal, and a MAIN_RXD terminal. The MCU_RX terminal is connected to the collector of the nineteenth transistor Q19, and the MCU_TX terminal is connected to the emitter of the twenty-third transistor Q20. There are two V_GLOBAL_1V8 terminals, which are respectively connected to the bases of the nineteenth transistor Q19 and the twenty-third transistor Q20. The MAIN_TXD terminal is connected to the emitter of the nineteenth transistor Q19, and the MAIN_RXD terminal is connected to the collector of the twenty-third transistor Q20. The transmit / receive signal circuit 902 is used to receive signals emitted by the digital display control chip U9 and feed them back to the control chip U12. It can also send operation signals emitted by the control chip U12 to the digital display control chip U9.

[0085] The digital display control circuit 1000 described in this circuit is connected to a first auxiliary connection circuit 1004. The first auxiliary connection circuit 1004 includes a VO_DATA terminal, a VO_DIN terminal, a 55th resistor R55, a VO_RESET terminal, a VO_RIN terminal, and a 58th resistor R58. The VO_DATA terminal and the VO_DIN terminal are connected through the 55th resistor R55, and the VO_RESET terminal and the VO_RIN terminal are connected through the 58th resistor R58.

[0086] The digital display control circuit 1000 described in this circuit is connected to a second auxiliary connection circuit 1005. The second auxiliary connection circuit 1005 includes an ADIM terminal, an AD_OUT terminal, a sixty-fifth resistor R65, an ASCLK terminal, an ASCLK_OUT terminal, a sixty-eighth resistor R68, a BDIM terminal, a BD_OUT terminal, a seventy-first resistor R71, a BSCLK terminal, a BSCLK_OUT terminal, and a seventy-fourth resistor R74. The ADIM terminal and the AD_OUT terminal are connected through the sixty-fifth resistor R65, the ASCLK terminal and the ASCLK_OUT terminal are connected through the sixty-eighth resistor R68, the BDIM terminal and the BD_OUT terminal are connected through the seventy-first resistor R71, and the BSCLK terminal and the BSCLK_OUT terminal are connected through the seventy-fourth resistor R74.

[0087] The digital display screen control circuit 1000 described in this circuit includes a digital display screen control chip U9, a 27th capacitor C27, a 22nd resistor R22, a 23rd resistor R23, a BAT+ terminal, a U9VDD terminal, and a VDD5V terminal. Pin 4 of the digital display screen control chip U9 is connected to the U9VDD terminal. The common terminal of one end of the 27th capacitor C27, the 22nd resistor R22, and the 23rd resistor R23 is connected to the U9VDD terminal. The VDD5V terminal is connected to the other end of the 22nd resistor R22, and the BAT+ terminal is connected to the other end of the 23rd resistor R23.

[0088] This circuit also includes a USB power supply circuit 1100, which supplies power to pin 21 of the digital display control chip U9.

[0089] The USB power supply circuit 1100 described in this circuit includes a first connector J1, a DC 5V terminal, a first step-down chip U1, a CHRG_IN terminal, a BAT3.7 terminal, a second diode D2, a fifteenth resistor R15, a DC 5V_DET terminal, a first switch S1, and a second connector J2. Pins 3 and 4 of the first switch S1 are connected to pin 1 of the second connector J2. Pins 1 and 2 of the first switch S1 are connected to the BAT3.7 terminal, which is connected to pin 5 of the first step-down chip U1. Pin 4 of chip U1 is connected to the DC5V terminal, which is connected to pin 5 of the first connector J1. Pin 6 of the first step-down chip U1 is connected to the CHRG_IN terminal, which is connected to pin 2 of the digital display control chip U9. The DC5V terminal is also connected to the second diode D2. The other end of the second diode D2 is connected to the fifteenth resistor R15, which is connected to the DC5V_DET terminal. The DC5V_DET terminal is connected to pin 1 of the digital display control chip U9.

[0090] The digital display control chip U9 described in this circuit is connected to a voltage divider detection circuit 1101. The voltage divider detection circuit 1101 includes a first field-effect transistor Q1, a BAT_DET terminal, a BAT+3.7 terminal, a POWER_ON terminal, and a ground terminal GND. The D terminal of the first field-effect transistor Q1 is connected to the BAT_DET terminal and the BAT+3.7 terminal, the G terminal of the first field-effect transistor Q1 is connected to the POWER_ON terminal, and the S terminal of the first field-effect transistor Q1 is connected to the ground terminal GND. The BAT+3.7 terminal of the voltage divider detection circuit 1101 is connected to pin 5 of the first step-down chip U1, and the BAT_DET terminal of the voltage divider detection circuit 1101 is connected to pin 21 of the digital display control chip U9.

[0091] The digital display control chip U9 described in this circuit is connected to a second auxiliary connector circuit 1102. The second auxiliary connector circuit 1102 includes a third connector J3, a twenty-second field-effect transistor Q22, a VDD 5V terminal, a twenty-first transistor Q21, and a ZC13_EN terminal. Pin 1 of the third connector J3 is connected to the drain (D) terminal of the twenty-second field-effect transistor Q22. The source (S) terminal of the twenty-second field-effect transistor Q22 is connected to the VDD 5V terminal. The gate (G) terminal of the twenty-second field-effect transistor Q22 is connected to the collector (collector) terminal of the twenty-first transistor Q21. The base (base) terminal of the twenty-first transistor Q21 is connected to the ZC13_EN terminal. The ZC13_EN terminal is connected to pin 23 of the digital display control chip U9. Pin 7 of the third connector J3 of the second auxiliary connector circuit 1102 is connected to a speaker 70.

[0092] The USB power supply circuit 1100 described in this circuit is connected to a 5V power supply circuit 1103. The 5V power supply circuit 1103 includes a BAT+3.7 terminal, a DC 5V terminal, a second field-effect transistor Q2, a DC 5V_EN terminal, a second step-down chip U2, and a VDD 5V terminal. The BAT+3.7 terminal is connected to the gate (G) terminal and the drain (D) terminal of the second field-effect transistor Q2. The source (S) terminal of the second field-effect transistor Q2 is connected to pin 3 of the second step-down chip U2. The 5V power supply circuit 1103 outputs a 5V voltage to supply the corresponding circuits.

[0093] The digital display control chip U9 is connected to the 433M communication circuit 1106 and the 315M communication circuit 1107 respectively through the fourth connection circuit 1108. Pin 7 of the digital display control chip U9 is connected to one end of the forty-third resistor R43 on the fourth connection circuit 1108. The other end of the forty-third resistor R43 is connected to the 433M_DATA terminal of the 433M communication circuit 1106. The 433M_DATA terminal is input to pin 4 of the fourth wireless chip U4. The fourth wireless chip U4 is connected to the first antenna T3. In addition, pin 8 of the digital display control chip U9 is connected to one end of the fortieth resistor R40 on the fourth connection circuit 1108. The other end of the fortieth resistor R40 is connected to the 315M_DATA terminal of the 315M communication circuit 1107. The 315M_DATA terminal is input to pin 5 of the second wireless chip U5. The second wireless chip U5 is connected to the second antenna T4. The 433_3V3 terminal of the 433M communication circuit 1106 is connected to the charging voltage regulator circuit 1104. Pin 5 of the charging voltage regulator chip U3 of the charging voltage regulator circuit 1104 is connected to the 433_3V3 terminal. The third connector J3 of the second auxiliary connector circuit 1102 is connected to the third auxiliary connection circuit 1105. Pins 4 and 5 of the third connector J3 are connected to the ZC13_RX and ZC13_TX terminals of the third auxiliary connection circuit 1105, respectively. The ZC13RX_IN and ZC13TX_IN terminals of the third auxiliary connection circuit 1105 are connected to the 5 and 6 terminals of the digital display control chip U9, respectively. The 27th resistor R27 and the 30th resistor R30 are used to protect the 5 and 6 terminals of the digital display control chip U9, respectively.

[0094] like Figures 1 to 5 As shown, this utility model also discloses an intelligent exhaust fan controller, including a housing 10. Inside the housing 10, a circuit board 30 and a digital display screen 20 connected to the circuit board 30 are disposed. The circuit board 30 includes the aforementioned intelligent exhaust fan control circuit with sensors. A display window 111 is provided on the front side of the housing 10, and the digital display screen 20 is disposed at the display window 111. The circuit board 30 integrates a power switch 340 and a pairing switch 330. A hook slot 121 for connecting to a hook is provided on the back of the housing 10. Inside the housing 10, a microphone 40, a gas detection sensor 50, a power supply battery 60, and a speaker 70 are respectively connected to the circuit board 30. The gas detection sensor can detect the gas situation near the control box and display the gas concentration in real time on the digital display screen. Simultaneously, the speaker provides an audible warning to enhance safety awareness and improve the safety of kitchen operations.

[0095] The circuit board 30 of this structure integrates a communication card slot 320, which is used to install a communication card; the outer casing 10 is provided with an opening 112 corresponding to the position of the communication card slot 320, and a sealing flip cover 150 is provided at the opening 112.

[0096] In this invention, the microphone 40 is used for sound pickup, and together with the voice recognition module of the circuit board 30, it can realize intelligent voice control.

[0097] The function of the hook groove 121 is to allow it to be quickly inserted and engaged with the wall-mounted nails to achieve hanging, which is convenient for installation, reduces manual operation, and facilitates disassembly and maintenance.

[0098] The circuit board 30 integrates a communication card slot 320 for installing a communication card. The outer casing 10 has an opening 112 corresponding to the communication card slot 320, and a sealing flip cover 150 is provided at the opening 112. The communication card provides a network signal for use in areas without Wi-Fi.

[0099] The rear inner wall of the outer casing 10 is provided with a speaker mounting cavity 124, and a plurality of outwardly penetrating sound holes 125 are evenly distributed in the speaker mounting cavity 124. The speaker 70 is fixedly installed in the speaker mounting cavity 124.

[0100] Inside the outer casing 10 below the speaker mounting cavity 124, there are clips 122 spaced vertically, forming a snap-fit ​​space 123 between the clips 122 spaced vertically. The power supply battery 60 is snapped and fixed in the snap-fit ​​space 123. The structure is simple, easy to assemble, and meets the requirements of use.

[0101] See Figure 1 and Figure 3 The power switch 340 and the pairing switch 330 are disposed on the upper side of the circuit board 30. A toggle switch 130 and a push switch 140 are disposed on the upper side wall of the housing 10. The toggle switch 130 is slidably disposed relative to the housing 10 to the left and right or back and forth. The toggle switch 130 is connected to the power switch 340 to drive the power switch 340 to move left and right or back and forth. The push switch 140 is disposed vertically disposed relative to the housing 10. The lower surface of the push switch 140 presses against the upper surface of the push switch 140.

[0102] The function of pairing switch 330 is to enable circuit board 30 to enter pairing mode by pressing and holding pairing switch 330, which can be used to pair and connect with wireless terminal.

[0103] The outer casing 10 consists of a front casing 110 and a back plate 120 connected to each other. The circuit board 30 is connected to the charging connector 310. A hanging bracket 80 is provided on the back of the outer casing 10, and the hanging bracket 80 is provided with a hook 801 and a hanging bracket mounting hole 802. The hook 801 is fastened into the hook groove 121, and the hanging bracket mounting hole 802 is fitted with a screw, which can be screwed to the wall to fix the position of the outer casing 10.

[0104] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0105] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A smart exhaust fan control circuit with sensors, characterized in that: include: The control circuit (90) implements overall control; A signal transmitting and receiving circuit (902) is connected to a control circuit (90); A sensing circuit (904) is connected to a control circuit (90); The digital display control circuit (1000) is connected to the control circuit (90) via the transmitting and receiving signal circuit (902). A digital display screen startup circuit (1006) is connected to a digital display screen control circuit (1000); The microphone circuit (1003) is connected to the digital display control circuit.

2. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The control circuit (90) includes a control chip U12 and a Bluetooth and ANT protocol dual-mode communication chip S6. Pins 38 and 44 of the control chip U12 are respectively connected to pin 1 of the Bluetooth and ANT protocol dual-mode communication chip S6.

3. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The control circuit (90) is connected to a SIM user identification module (903), which includes a user identification chip U11 and a bridge rectifier group D6, and the user identification chip U11 and the bridge rectifier group D6 are connected to each other.

4. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The control circuit (90) is also connected to a power management circuit (901) at pin 29. The power management circuit (901) includes a 23rd transistor Q23, a power management chip U10, a VDD5V terminal, a 3.88V_EN terminal, a 3.88V terminal, and a fifth bidirectional diode D5. The 3.88V_EN terminal is connected to the base of the 23rd transistor Q23. The collector of the 23rd transistor Q23 is connected to pin 1 of the power management chip U10. The VDD5V terminal is connected to pin 4 of the power management chip U10. Pin 3 of the power management chip U10 is connected to the 3.88V terminal. The 3.88V terminal is connected to the fifth bidirectional diode D5.

5. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The sensing circuit (904) includes an LS1 terminal, a 104th capacitor C104, a 97th resistor R97, a MIC+ terminal, a 105th capacitor C105, a 98th resistor R98, and a MIC- terminal. The LS1 terminal is connected to a gas detection sensor (50). The LS1 terminal, the 104th capacitor C104, the 97th resistor R97, and the MIC+ terminal are connected in series. Pin 2 of the LS1 terminal, the 105th capacitor C105, the 98th resistor R98, and the MIC- terminal are connected in series. Pins 1 and 2 of the LS1 terminal are respectively connected to a 7th bidirectional diode D7 and an 8th bidirectional diode D8. The common terminal between the 7th bidirectional diode D7 and the 8th bidirectional diode D8 is connected to a 35th capacitor C35. The 35th capacitor C35 is also connected to a 94th resistor R94. The 94th resistor R94 is connected to the MIC_BIAS terminal.

6. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The digital display control circuit (1000) is connected to a digital display switch circuit (1001) and a chip connector (1002). The digital display switch circuit (1001) includes a KEY terminal connected to a fifth switch S5. The KEY terminal is connected to the fifth switch S5 and is connected to the digital display control circuit (1000).

7. The intelligent exhaust fan control circuit with sensor according to claim 1, characterized in that: The digital display startup circuit (1006) includes an LCD_EN terminal, a thirteenth transistor Q13, a VDD5V terminal, a fourteenth field-effect transistor Q14, an LCD_5V terminal, a seventh LCD driver chip U7, an eighth LCD driver chip U8, and a digital display LCD1. The seventh LCD driver chip U7 and the eighth LCD driver chip U8 are respectively connected to the digital display LCD1. Pin 17 of the seventh LCD driver chip U7 and pin 17 of the eighth LCD driver chip U8 are respectively connected to the LCD_5V terminal. The LCD_5V terminal is connected to the drain (D) terminal of the fourteenth field-effect transistor Q14. The source (S) terminal of the fourteenth field-effect transistor Q14 is connected to the VDD5V terminal. The gate (G) terminal of the fourteenth field-effect transistor Q14 is connected to the collector of the thirteenth transistor Q13. The base of the thirteenth transistor Q13 is connected to the LCD_EN terminal.

8. The intelligent exhaust fan control circuit with sensing according to claim 1, characterized in that: The pickup circuit (1003) includes a pickup chip U6, a fourth connector J4, a third switch S3, a fourth switch S4, a tenth field-effect transistor Q10, a VO_DATA terminal, a VO_RESET terminal, a VDD5V terminal, a ninth transistor Q9, and a VO_EN terminal. The fourth connector J4 is also connected to a pickup (40). Pins 1 and 2 of the fourth connector J4 are connected to pins 3 and 4 of the pickup chip U6, respectively. The VO_DATA terminal and... The VO_RESET terminal is connected to pins 6 and 7 of the pickup chip U6. Pin 1 of the fourth switch S4 is connected to pin 6 of the pickup chip U6. Pin 5 of the pickup chip U6 is connected to the drain of the tenth field-effect transistor Q10. The source of the tenth field-effect transistor Q10 is connected to the VDD5V terminal. Pins 3 and 1 of the third switch S3 are connected to pins 1 and 2 of the pickup chip U6, respectively. The VO_EN terminal is connected to the base of the ninth transistor Q9.

9. The intelligent exhaust fan control circuit with sensing according to claim 1, characterized in that: The transmit / receive signal circuit (902) includes an MCU_RX terminal, an MCU_TX terminal, a nineteenth transistor Q19, a twenty-third transistor Q20, a V_GLOBAL_1V8 terminal, a MAIN_TXD terminal, and a MAIN_RXD terminal. The MCU_RX terminal is connected to the collector of the nineteenth transistor Q19, the MCU_TX terminal is connected to the emitter of the twenty-third transistor Q20, there are two V_GLOBAL_1V8 terminals, which are respectively connected to the bases of the nineteenth transistor Q19 and the twenty-third transistor Q20, the MAIN_TXD terminal is connected to the emitter of the nineteenth transistor Q19, and the MAIN_RXD terminal is connected to the collector of the twenty-third transistor Q20.

10. The intelligent exhaust fan control circuit with sensing according to claim 1, characterized in that: The digital display control circuit (1000) is connected to a first auxiliary connection circuit (1004). The first auxiliary connection circuit (1004) includes a VO_DATA terminal, a VO_DIN terminal, a 55th resistor R55, a VO_RESET terminal, a VO_RIN terminal, and a 58th resistor R58. The VO_DATA terminal and the VO_DIN terminal are connected through the 55th resistor R55, and the VO_RESET terminal and the VO_RIN terminal are connected through the 58th resistor R58.

11. The intelligent exhaust fan control circuit with sensing according to claim 1, characterized in that: The digital display control circuit (1000) is connected to a second auxiliary connection circuit (1005). The second auxiliary connection circuit (1005) includes an ADIM terminal, an AD_OUT terminal, a sixty-fifth resistor R65, an ASCLK terminal, an ASCLK_OUT terminal, a sixty-eighth resistor R68, a BDIM terminal, a BD_OUT terminal, a seventy-first resistor R71, a BSCLK terminal, a BSCLK_OUT terminal, and a seventy-fourth resistor R74. The ADIM terminal and the AD_OUT terminal are connected through the sixty-fifth resistor R65, the ASCLK terminal and the ASCLK_OUT terminal are connected through the sixty-eighth resistor R68, the BDIM terminal and the BD_OUT terminal are connected through the seventy-first resistor R71, and the BSCLK terminal and the BSCLK_OUT terminal are connected through the seventy-fourth resistor R74.

12. The intelligent exhaust fan control circuit with sensing according to claim 1, characterized in that: The digital display control circuit (1000) includes a digital display control chip U9, a 27th capacitor C27, a 22nd resistor R22, a 23rd resistor R23, a BAT+ terminal, a U9VDD terminal, and a VDD5V terminal. Pin 4 of the digital display control chip U9 is connected to the U9VDD terminal. The common terminal of one end of the 27th capacitor C27, the 22nd resistor R22, and the 23rd resistor R23 is connected to the U9VDD terminal. The VDD5V terminal is connected to the other end of the 22nd resistor R22. The BAT+ terminal is connected to the other end of the 23rd resistor R23. The circuit also includes a USB power supply circuit (1100), which supplies power to pin 21 of the digital display control chip U9. The USB power supply circuit (1100) includes a first connector J1, a DC 5V terminal, a first step-down chip U1, a CHRG_IN terminal, a BAT3.7 terminal, a second diode D2, a fifteenth resistor R15, a DC 5V_DET terminal, a first switch S1, and a second connector J2. Pins 3 and 4 of the first switch S1 are connected to pin 1 of the second connector J2, and pins 1 and 2 of the first switch S1 are connected to BA. On terminal T3.7, terminal BAT3.7 is connected to pin 5 of the first step-down chip U1. Pin 4 of the first step-down chip U1 is connected to the DC5V terminal, which is also connected to pin 5 of the first connector J1. Pin 6 of the first step-down chip U1 is connected to the CHRG_IN terminal, which is connected to pin 2 of the digital display control chip U9. The DC5V terminal is also connected to the second diode D2. The other end of the second diode D2 is connected to the fifteenth resistor R15, which is connected to the DC5V_DET terminal. The DC5V_DET terminal is connected to the digital display control chip U9. Pin 1 of the digital display control chip U9 is connected to a voltage divider detection circuit (1101). The voltage divider detection circuit (1101) includes a first field-effect transistor Q1, a BAT_DET terminal, a BAT+3.7 terminal, a POWER_ON terminal, and a ground terminal GND. The D terminal of the first field-effect transistor Q1 is connected to the BAT_DET terminal and the BAT+3.7 terminal, the G terminal of the first field-effect transistor Q1 is connected to the POWER_ON terminal, and the S terminal of the first field-effect transistor Q1 is connected to the ground terminal GND. Pin 1 of the voltage divider detection circuit 1101 is BAT+3.7.The 7th pin is connected to pin 5 of the first step-down chip U1. The BAT_DET pin of the voltage divider detection circuit (1101) is connected to pin 21 of the digital display control chip U9. The digital display control chip U9 is connected to a second auxiliary connector circuit (1102). The second auxiliary connector circuit (1102) includes a third connector J3, a twenty-second field-effect transistor Q22, a VDD5V terminal, a twenty-first transistor Q21, and a ZC13_EN terminal. Pin 1 of the third connector J3 is connected to the drain of the twenty-second field-effect transistor Q22. The source of the twenty-second field-effect transistor Q22 is connected to the VDD5V terminal. The gate of the twenty-second field-effect transistor Q22 is connected to the twenty-first transistor Q21. The collector of transistor Q21 is connected to the base of transistor Q21, which is connected to the ZC13_EN terminal. The ZC13_EN terminal is connected to pin 23 of the digital display control chip U9. The USB power supply circuit (1100) is connected to a 5V power supply circuit (1103). The 5V power supply circuit (1103) includes a BAT+3.7 terminal, DC5V, a second field-effect transistor Q2, a DC5V_EN terminal, a second step-down chip U2, and a VDD5V terminal. The BAT+3.7 terminal is connected to the gate (G) and drain (D) of the second field-effect transistor Q2. The source (S) of the second field-effect transistor Q2 is connected to pin 3 of the second step-down chip U2.

13. An intelligent exhaust fan controller, comprising a housing (10), characterized in that: The housing (10) contains a circuit board (30) and a digital display screen (20) connected to the circuit board (30). The circuit board (30) includes a sensor-equipped intelligent exhaust fan control circuit as described in any one of claims 1 to 12. The front side of the housing (10) has a display window (111), and the digital display screen (20) is located at the display window (111). The circuit board (30) integrates a power switch (340) and a pairing switch (330). The back side of the housing (10) has a hook groove (121) for connecting to a hook. The housing (10) contains a microphone (40), a gas detection sensor (50), a power supply battery (60), and a speaker (70) connected to the circuit board (30).

14. The intelligent exhaust fan controller according to claim 13, characterized in that: The circuit board (30) integrates a communication card slot (320), which is used to install a communication card; the outer shell (10) has an opening (112) corresponding to the position of the communication card slot (320), and a sealing flip cover (150) is provided at the opening (112).

15. The intelligent exhaust fan controller according to claim 13, characterized in that... The rear inner wall of the outer shell (10) is provided with a speaker mounting cavity (124), and a number of outwardly penetrating sound holes (125) are evenly distributed in the speaker mounting cavity (124). The speaker (70) is fixedly installed in the speaker mounting cavity (124).

16. The intelligent exhaust fan controller according to claim 15, characterized in that... The speaker mounting cavity (124) is provided with clips (122) spaced vertically in the outer shell (10). The clips (122) spaced vertically form a snap-fit ​​space (123), and the power supply battery (60) is snapped and fixed in the snap-fit ​​space (123).

17. The intelligent exhaust fan controller according to claim 13, characterized in that... The power switch (340) and the pairing switch (330) are disposed on the upper side of the circuit board (30). A toggle switch (130) and a push switch (140) are disposed on the upper side wall of the housing (10). The toggle switch (130) is slidably disposed relative to the housing (10) to the left and right or back and forth. The toggle switch (130) is connected to the power switch (340) to drive the power switch (340) to move left and right or back and forth. The push switch (140) is disposed vertically disposed relative to the housing (10). The lower surface of the push switch (140) presses against the upper surface of the push switch (140).

18. The intelligent exhaust fan controller according to claim 13, characterized in that... The outer shell (10) consists of a front shell (110) and a back plate (120) that are connected to each other.

19. The intelligent exhaust fan controller according to claim 13, characterized in that: The circuit board (30) is connected to the charging connector (310).

20. The intelligent exhaust fan controller according to claim 13, characterized in that: The back of the outer shell (10) is provided with a hanging bracket (80), and the hanging bracket (80) is provided with a hook (801) and a hanging bracket mounting hole (802).

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