A detection system for infrared gesture function of a range hood

Abstract

The application belongs to the field of range hood, and discloses a detection system of infrared gesture function of a range hood. The detection system comprises an artificial hand, a transmission device, a motor, a first power supply, a controller and a motor control circuit. The controller is connected with the motor through the motor control circuit. The first power supply is connected with the motor through the motor control circuit. The motor is connected with the artificial hand through the transmission device. The controller is used for sending a motor start-stop signal to the motor control circuit, and controlling the first power supply to supply power or cut off power to the motor. The controller is also used for sending a motor speed regulation signal to the motor control circuit, and adjusting the rotating speed of the motor. The motor is used for moving the artificial hand through the transmission device, and detecting the infrared gesture function of the range hood. The application can improve the reliability and efficiency of detection when detecting the infrared gesture function of the range hood.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a detection system for infrared gesture function of a range hood. Background Technology

[0002] Currently, most household range hoods are designed with infrared gesture sensing functionality. Users can control the range hood using this feature when it's in use to extract cooking fumes.

[0003] In existing technology, range hoods with infrared gesture sensing function require manual inspection of the infrared gesture sensing function by inspectors before they can leave the factory. However, during manual inspection, the technician's hand may slide at inconsistent heights or not in a straight line, causing the range hood to fail to receive the signal. This results in low reliability and efficiency of manual inspection.

[0004] Therefore, improving the reliability and efficiency of infrared gesture detection in range hoods is a technical problem that needs to be solved. Summary of the Invention

[0005] Therefore, it is necessary to provide a detection system for the infrared gesture function of a range hood to address the aforementioned technical problems.

[0006] Firstly, a detection system for the infrared gesture function of a range hood is provided. The detection system includes: an artificial hand, a transmission device, a motor, a power supply, a controller, and a motor control circuit; wherein...

[0007] The controller is connected to the motor via the motor control circuit;

[0008] The first power source is connected to the motor through the motor control circuit;

[0009] The motor is connected to the artificial hand via the transmission device;

[0010] The controller is used to send a motor start / stop signal to the motor control circuit and control the first power supply to supply power to or cut off power to the motor.

[0011] The controller is also used to send a motor speed control signal to the motor control circuit to adjust the speed of the motor;

[0012] The motor is used to drive the artificial hand to move through the transmission device and to detect the infrared gesture function of the range hood.

[0013] As an optional implementation, the motor control circuit includes: a motor drive module, a current sampling module, and a motor speed control module;

[0014] The motor drive module includes a first amplifier circuit, a second amplifier circuit, and an H-bridge drive circuit;

[0015] The first amplifier circuit is connected to the H-bridge driver circuit, the first power supply, and the controller, respectively.

[0016] The second amplifier circuit is connected to the H-bridge driver circuit, the first power supply, and the controller, respectively.

[0017] The H-bridge drive circuit is connected to the first power supply, the first amplifier circuit, the second amplifier circuit, the motor, and the motor speed control module, respectively.

[0018] The motor speed control module is connected to the H-bridge drive circuit, the current sampling module, and the controller, respectively.

[0019] The current sampling module is connected to the motor speed control module and the controller, respectively.

[0020] The first amplifier circuit and the second amplifier circuit are used to amplify the motor start / stop signal sent by the controller;

[0021] The H-bridge drive circuit is used to control the first power supply to supply power to or cut off power to the motor based on the amplified motor start / stop signal.

[0022] The current sampling module is used to collect the current current of the motor and send the current current to the controller, so that the controller can adjust the speed regulation voltage sent to the motor according to the current current.

[0023] The motor speed control module is used to receive the speed control voltage sent by the controller to adjust the motor.

[0024] The H-bridge drive circuit is also used to receive the voltage sent by the motor speed control module and control the rotation of the motor.

[0025] As an optional implementation, the H-bridge driving circuit includes a first field-effect MOSFET, a second field-effect MOSFET, a third field-effect MOSFET, and a fourth field-effect MOSFET;

[0026] The drain (D) terminals of the first and second field-effect MOSFETs are connected to the first power supply. The source (S) terminal of the first field-effect MOSFET is connected to the motor and the drain (D) terminal of the third field-effect MOSFET. The source (S) terminal of the second field-effect MOSFET is connected to the motor and the drain (D) terminal of the fourth field-effect MOSFET. The gate (G) terminal of the first field-effect MOSFET is connected to the first amplifier circuit. The gate (G) terminal of the second field-effect MOSFET is connected to the second amplifier circuit.

[0027] The source (S) terminals of the third and fourth field-effect MOSFETs are connected to the motor speed control module. The drain (D) terminal of the third field-effect MOSFET is connected to the motor and the source terminal of the first field-effect MOSFET. The drain (D) terminal of the fourth field-effect MOSFET is connected to the motor and the source terminal of the second field-effect MOSFET. The gate (G) terminal of the third field-effect MOSFET is connected to the first amplifier circuit, and the gate (G) terminal of the fourth field-effect MOSFET is connected to the second amplifier circuit.

[0028] As an optional implementation, the first amplifier circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, and a second transistor;

[0029] The first power supply is connected to the fourth resistor and the fifth resistor respectively. The fourth resistor is connected to the base of the first transistor, the collector of the second transistor, and the gate (G) of the third field-effect MOSFET. The fifth resistor is connected to the gate (G) of the first field-effect MOSFET and the collector of the first transistor. The base of the first transistor is connected to the first resistor, the third resistor, and the fourth resistor respectively. The collector of the first transistor is connected to the fifth resistor and the gate (G) of the first field-effect MOSFET respectively. The emitter of the first transistor is connected to the collector of the second transistor and the third... The gate (G) of the three-MOSFET is connected to the base of the second transistor, which is connected to the second resistor. The emitter of the second transistor is grounded. The collector of the second transistor is connected to the first resistor, the fourth resistor, and the emitter of the first transistor. The controller is connected to the first resistor and the second resistor. The first resistor is connected to the third resistor, the fourth resistor, the base of the first transistor, the collector of the second transistor, the gate (G) of the third MOSFET, and the controller. The second resistor is connected to the base of the second transistor and the controller. The third resistor is grounded.

[0030] As an optional implementation, the second amplifier circuit includes an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a fourth transistor, and a fifth transistor;

[0031] The first power supply is connected to the fourteenth resistor and the fifteenth resistor, respectively. The fourteenth resistor is connected to the base of the fourth transistor, the collector of the fifth transistor, and the gate (G) of the fourth field-effect MOSFET, respectively. The fifteenth resistor is connected to the gate (G) of the second field-effect MOSFET and the collector of the fourth transistor, respectively. The base of the fourth transistor is connected to the eleventh resistor, the thirteenth resistor, and the fourteenth resistor, respectively. The collector of the fourth transistor is connected to the fifteenth resistor and the gate (G) of the second field-effect MOSFET, respectively. The emitter of the fourth transistor is connected to the collector of the fifth transistor and the fourth... The gate (G) terminal of the field-effect MOSFET is connected to the base of the fifth transistor, which is connected to the twelfth resistor. The emitter of the fifth transistor is grounded. The collector of the fifth transistor is connected to the eleventh resistor, the fourteenth resistor, and the emitter of the fourth transistor. The controller is connected to the eleventh and twelfth resistors. The eleventh resistor is connected to the thirteenth resistor, the fourteenth resistor, the base of the fourth transistor, the collector of the fifth transistor, the gate (G) terminal of the fourth field-effect MOSFET, and the controller. The twelfth resistor is connected to the base of the fifth transistor and the controller. The thirteenth resistor is grounded.

[0032] As an optional implementation, the motor speed control module includes an operational amplifier, a sixth resistor, a seventh resistor, an eighth resistor, a third transistor, a first capacitor, and a second capacitor;

[0033] The non-inverting input of the operational amplifier is connected to the controller. The output of the operational amplifier is connected to the sixth resistor and the first capacitor. The inverting input of the operational amplifier is connected to the seventh resistor, the eighth resistor, and the second capacitor. The seventh resistor is connected to the first capacitor. The sixth resistor is connected to the base of the third transistor. The collector of the third transistor is connected to the source (S) of the third MOSFET and the fourth MOSFET. The emitter of the third transistor is connected to the eighth resistor and the current sampling module. The eighth resistor is connected to the second capacitor, and the second capacitor is grounded.

[0034] As an optional implementation, the current sampling module includes a ninth resistor connected to a tenth resistor;

[0035] The ninth resistor and the tenth resistor are connected in parallel. One end of the parallel circuit is connected to the emitter of the third transistor and the eighth resistor, respectively, and the other end of the parallel circuit is connected to the controller.

[0036] As an optional implementation, the detection system for the infrared gesture function of the range hood further includes an infrared detection module, and the controller is connected to the infrared detection module;

[0037] The infrared detection module is used to send a signal to the controller when the artificial hand moves and blocks the view, driven by the transmission device.

[0038] The controller is also configured to receive signals sent by the infrared detection module, determine the movement speed of the artificial hand based on the signals, and detect the infrared gesture function of the range hood based on the movement speed of the artificial hand and a preset speed.

[0039] As an optional implementation, the infrared detection module includes a first infrared detection circuit and a second infrared detection circuit; the first infrared detection circuit includes a second power supply, a third power supply, a fourth power supply, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a first infrared pair, a sixth transistor, and a third capacitor;

[0040] The second power supply is connected to the sixteenth resistor, the sixteenth resistor is connected to the first emitting diode of the first infrared pair, the controller is connected to the seventeenth resistor, the seventeenth resistor is connected to the base of the sixth transistor, the emitter of the sixth transistor is grounded, the collector of the sixth transistor is connected to the second emitting diode of the first infrared pair, the third power supply is connected to the eighteenth resistor, the eighteenth resistor is connected to the third receiving diode of the first infrared pair, the fourth power supply is connected to the nineteenth resistor, the nineteenth resistor is connected to the first receiving diode of the first infrared pair and the twentieth resistor, the twentieth resistor is connected to the nineteenth resistor, the first receiving diode of the first infrared pair, the third capacitor and the controller, and the third capacitor is connected to the twentieth resistor, the second receiving diode of the first infrared pair and the controller.

[0041] As an optional implementation, the second infrared detection circuit includes a fifth power supply, a sixth power supply, a seventh power supply, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a second infrared pair, a seventh transistor, and a fourth capacitor.

[0042] The fifth power supply is connected to the 21st resistor, the 21st resistor is connected to the first emitting tube of the second infrared pair, the controller is connected to the 22nd resistor, the 22nd resistor is connected to the base of the 7th transistor, the emitter of the 7th transistor is grounded, the collector of the 7th transistor is connected to the second emitting tube of the second infrared pair, the sixth power supply is connected to the 23rd resistor, the 23rd resistor is connected to the third receiving tube of the second infrared pair, the seventh power supply is connected to the 24th resistor, the 24th resistor is connected to the first receiving tube of the second infrared pair and the 25th resistor, the 25th resistor is connected to the 24th resistor, the first receiving tube of the second infrared pair, the fourth capacitor and the controller, and the fourth capacitor is connected to the 25th resistor, the second receiving tube of the second infrared pair and the controller.

[0043] This application provides a detection system for the infrared gesture function of a range hood. The technical solution provided by the embodiments of this application brings at least the following beneficial effects: By designing a motor control circuit and an infrared detection circuit, the voltage of the motor driving the human-hand slider is determined based on the distance of the infrared gesture function area of ​​the range hood and the on-time of each function of the range hood. In this way, the infrared gesture sensing function of the range hood can be automatically detected and inspected through the detection system. This eliminates the need for manual inspection of the infrared gesture sensing function of the range hood, avoiding the problems of low reliability and low efficiency of manual inspection. Therefore, the reliability and efficiency of infrared gesture sensing function detection are improved.

[0044] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of a detection system for infrared gesture function of a range hood provided in an embodiment of this application;

[0047] Figure 2 An example diagram of a motor control circuit provided in an embodiment of this application;

[0048] Figure 3This is an example diagram of an infrared detection circuit provided in an embodiment of this application. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0050] This application provides an embodiment of a detection system for the infrared gesture function of a range hood. For example... Figure 1 As shown, the detection system for the infrared gesture function of the range hood includes an artificial hand 101, a transmission device 102, a motor 103, a first power supply 104, a controller 105, and a motor control circuit 106.

[0051] The controller 105 is connected to the motor 103 via the motor control circuit 106, and the first power supply 104 is connected to the motor 103 via the motor control circuit 106. The motor 103 is connected to the artificial hand 101 via the transmission device 102. The controller 105 sends start / stop signals to the motor control circuit 106 to control the first power supply 104 to supply or de-energize the motor 103. The controller 105 also sends motor speed control signals to the motor control circuit 106 to adjust the speed of the motor 103. The motor 103 drives the artificial hand 101 to move via the transmission device 102, detecting the infrared gesture function of the range hood.

[0052] Figure 2 An example diagram of a motor control circuit provided in an embodiment of this application is shown below. Figure 2 As shown, the motor control circuit includes a motor drive module, a current sampling module, and a motor speed control module. The motor drive module includes a first amplifier circuit, a second amplifier circuit, and an H-bridge drive circuit.

[0053] As an optional implementation, the first amplifier circuit is connected to the H-bridge driver circuit, the first power supply, and the controller.

[0054] In implementation, the controller sends motor start / stop signals to the motor drive module, and the first amplifier circuit amplifies these signals. Upon receiving the amplified motor start / stop signals, the H-bridge drive circuit controls the first power supply to either power on or off the motor (CN2). The motor start / stop signals are either high or low levels input from the controller to the first amplifier circuit.

[0055] As an optional implementation, the second amplifier circuit is connected to the H-bridge driver circuit, the first power supply, and the controller.

[0056] In implementation, the second amplifier circuit and the first amplifier circuit are structurally identical, and the connection method between the second amplifier circuit and the H-bridge drive circuit is also the same as that between the first amplifier circuit and the H-bridge drive circuit. The controller normally sends motor start / stop signals to the motor drive module, and the second amplifier circuit amplifies these signals. Upon receiving the amplified motor start / stop signals, the H-bridge drive circuit controls the first power supply to power or de-energize the motor (CN2). The motor start / stop signal is either a high-level or low-level signal input from the controller to the second amplifier circuit.

[0057] As an optional implementation, if the electrical signal input from the controller to the first amplifier circuit is high and the electrical signal input from the controller to the second amplifier circuit is low, then the motor (CN2) rotates normally in the forward direction. If the electrical signal input from the controller to the first amplifier circuit is low and the electrical signal input from the controller to the second amplifier circuit is low, then the motor (CN2) rotates normally in the reverse direction.

[0058] As an optional implementation, the H-bridge drive circuit is connected to the first power supply, the first amplifier circuit, the second amplifier circuit, the motor (CN2), and the motor speed control module, respectively.

[0059] In implementation, the H-bridge drive circuit is connected to the first power supply, the first amplifier circuit, the second amplifier circuit, and the motor (CN2). Based on the amplified motor start / stop signal, the H-bridge drive circuit controls the first power supply to supply power to or de-energize the motor (CN2). The H-bridge drive circuit is also connected to the motor speed control module and is used to receive the voltage sent by the motor speed control module and control the rotation of the motor (CN2).

[0060] As an optional implementation, the H-bridge driver circuit includes a first field-effect MOSFET (U10BNCE4606), a second field-effect MOSFET (U11BNCE4606), a third field-effect MOSFET (U10ANCE4606), and a fourth field-effect MOSFET (U11ANCE4606).

[0061] The drain (D) of the first field-effect MOSFET (U10BNCE4606) and the drain (D) of the second field-effect MOSFET (U11BNCE4606) are connected to the first power supply. The source (S) of the first field-effect MOSFET (U10BNCE4606) is connected to the motor (CN2) and the drain (D) of the third field-effect MOSFET (U10ANCE4606). The source (S) of the second field-effect MOSFET (U11BNCE4606) is connected to the motor (CN2) and the drain (D) of the fourth field-effect MOSFET (U11ANCE4606). The gate (G) of the first field-effect MOSFET (U10BNCE4606) is connected to the first amplifier circuit. The gate (G) of the second field-effect MOSFET (U11BNCE4606) is connected to the second amplifier circuit.

[0062] The source (S) terminal of the third field-effect MOSFET (U10ANCE4606) and the source (S) terminal of the fourth field-effect MOSFET (U11ANCE4606) are connected to the motor speed control module. The drain (D) terminal of the third field-effect MOSFET (U10ANCE4606) is connected to the motor (CN2) and the source (S) terminal of the first field-effect MOSFET (U10BNCE4606), respectively. The drain (D) terminal of the fourth field-effect MOSFET (U11ANCE4606) is connected to the motor (CN2) and the source (S) terminal of the second field-effect MOSFET (U11BNCE4606), respectively. The gate (G) terminal of the third field-effect MOSFET (U10ANCE4606) is connected to the first amplifier circuit, and the gate (G) terminal of the fourth field-effect MOSFET (U11ANCE4606) is connected to the second amplifier circuit.

[0063] As an optional implementation, the motor (CN2) speed control module is connected to the H-bridge drive circuit, the current sampling module, and the controller.

[0064] In implementation, the motor speed control module is connected to the H-bridge drive circuit. The motor speed control module receives the speed control voltage of the motor (CN2) from the controller and sends this voltage to the H-bridge drive circuit. The H-bridge drive circuit receives the voltage sent by the motor speed control module and controls the rotation of the motor (CN2). The controller determines the motor speed control signal of the motor (CN2) based on the current current of the motor (CN2) collected by the current sampling module, and sends the adjustment voltage of the motor (CN2) to the motor speed control module to adjust the speed of the motor (CN2).

[0065] As an optional implementation, the first amplifier circuit includes a first resistor (R723K9), a second resistor (R743K9), a third resistor (R731K), a fourth resistor (R703K9), a fifth resistor (R713K9), a first transistor (Q4S8050), and a second transistor (Q3S8050). A first power supply (VCC 12V) is connected to the fourth resistor (R703K9) and the fifth resistor (R713K9). The fourth resistor (R703K9) is connected to the base of the first transistor (Q4S8050), the collector of the second transistor (Q3S8050), and the gate (G) of the third field-effect MOSFET (U10ANCE4606). The fifth resistor (R713K9) is connected to the gate (G) of the first field-effect MOSFET (U10BNCE4606) and the collector of the first transistor (Q4S8050). The base of the first transistor (Q4S8050) is connected to the first resistor (R723K9), the third resistor (R731K), and the fourth resistor (R703K9). The collector of the first transistor (Q4S8050) is connected to the fifth resistor (R713K9) and the gate (G) of the first field-effect MOSFET (U10BNCE4606). The emitter of the first transistor (Q4S8050) is connected to the collector of the second transistor (Q3S8050) and the gate (G) of the third field-effect MOSFET (U10ANCE4606). The base of the second transistor (Q3S8050) is connected to the second resistor (R743K9). The emitter of the second transistor (Q3S8050) is grounded. The collector of the second transistor (Q3S8050) is connected to the first resistor (R723K9), the fourth resistor (R703K9), and the emitter of the first transistor (Q4S8050). The controller is connected to the first resistor (R723K9) and the second resistor (R743K9). The first resistor (R723K9) is connected to the third resistor (R731K), the fourth resistor (R703K9), the base of the first transistor (Q4S8050), the collector of the second transistor (Q3S8050), the gate of the third MOSFET (U10ANCE4606), and the controller. The second resistor (R743K9) is connected to the base of the second transistor (Q3S8050) and the controller, and the third resistor (R731K) is grounded.

[0066] As an optional implementation, the second amplifier circuit includes an eleventh resistor (R183K9), a twelfth resistor (R763K9), a thirteenth resistor (R191K), a fourteenth resistor (R173K9), a fifteenth resistor (R163K9), a fourth transistor (Q5S8050), and a fifth transistor (Q12S8050).

[0067] The first power supply (VCC 12V) is connected to the fourteenth resistor (R173K9) and the fifteenth resistor (R163K9). The fourteenth resistor (R173K9) is connected to the base of the fourth transistor (Q5S8050), the collector of the fifth transistor (Q12S8050), and the gate of the fourth field-effect MOSFET (U11ANCE4606). The fifteenth resistor (R163K9) is connected to the gate of the second field-effect MOSFET (U11BNCE4606) and the collector of the fourth transistor (Q5S8050). The base of the fourth transistor (Q5S8050) is connected to the eleventh resistor (R183K9), the thirteenth resistor (R191K), and the fourteenth resistor (R173K9). The collector of the fourth transistor (Q12S8050) is connected to the fifteenth resistor (R163K9) and the gate (G) of the second MOSFET (U11BNCE4606). The emitter of the fourth transistor (Q5S8050) is connected to the collector of the fifth transistor (Q5S8050) and the gate (G) of the fourth MOSFET (U11ANCE4606). The base of the fifth transistor (Q12S8050) is connected to the twelfth resistor (R763K9). The emitter of the fifth transistor (Q12S8050) is grounded. The collector of the fifth transistor (Q12S8050) is connected to the eleventh resistor (R183K9), the fourteenth resistor (R173K9), and the emitter of the fourth transistor (Q5S8050). The controller is connected to the eleventh resistor (R183K9) and the twelfth resistor (R763K9). The eleventh resistor (R183K9) is connected to the thirteenth resistor (R191K), the fourteenth resistor (R173K9), the base of the fourth transistor (Q5S8050), the collector of the fifth transistor (Q12S8050), the gate of the fourth MOSFET (U11ANCE4606), and the controller. The twelfth resistor (R763K9) is connected to the base of the fifth transistor (Q12S8050) and the controller. The thirteenth resistor (R191K) is grounded.

[0068] As an optional implementation, the motor speed control module includes an operational amplifier (IC2004), a sixth resistor (R931K), a seventh resistor (R941K), an eighth resistor (R921K), a third transistor (Q22SS8050), a first capacitor (C97222), and a second capacitor (C96222). The non-inverting input of the operational amplifier (IC2004) is connected to the controller. The output of the operational amplifier (IC2004) is connected to the sixth resistor (R931K) and the first capacitor (C97222). The inverting input of the operational amplifier (IC2004) is connected to the seventh resistor (R941K), the eighth resistor (R921K), and the second capacitor (C96222). The seventh resistor (R941K) is connected to the first capacitor (C97222), and the sixth resistor (R931K) is connected to the third transistor. The base of (Q22SS8050) and the collector of the third transistor (Q22SS8050) are connected to the source of the third field-effect MOSFET (U10ANCE4606) and the source of the fourth field-effect MOSFET (U11ANCE4606), respectively. The emitter of the third transistor (Q22SS8050) is connected to the eighth resistor (R921K) and the current sampling module, respectively. The eighth resistor (R921K) is connected to the second capacitor (C96222), and the second capacitor (C96222) is grounded.

[0069] As an optional implementation, the current sampling module is connected to both the motor speed control module and the controller.

[0070] In implementation, the current sampling module is connected to both the motor speed control module and the controller. The current sampling module can collect the current of the motor (CN2) based on the voltage from the motor speed control module and send the current current to the controller. This allows the controller to adjust the speed control voltage sent to the motor (CN2) according to the current current.

[0071] As an optional implementation, the current sampling module includes a ninth resistor (R751R) and a tenth resistor (R151R). The ninth resistor (R751R) and the tenth resistor (R151R) are connected in parallel. One end of the parallel circuit is connected to the emitter of the third transistor (Q22SS8050) and the eighth resistor (R921K), respectively, and the other end of the parallel circuit is connected to the controller.

[0072] The controller receives the input voltage through the non-inverting input of the operational amplifier (IC2004). When the input voltage increases, the current in the motor (CN2) increases, and the speed of the motor (CN2) also increases. When the input voltage decreases, the current in the motor (CN2) decreases, and the speed of the motor (CN2) also decreases. This is because the collector current of the third transistor (Q22SS8050) is equal to the current in the motor (CN2). Therefore, the output of the operational amplifier (IC2004) drives the base current of the third transistor (Q22SS8050), thereby controlling the collector current of the third transistor (Q22SS8050) and thus controlling the current in the motor (CN2). Based on the principle of virtual short and virtual open circuits of the operational amplifier, the current at the non-inverting input of the operational amplifier (IC2004) is equal to the current at the inverting input of the operational amplifier (IC2004), and also equal to the current in the parallel circuit of the ninth resistor (R751R) and the tenth resistor (R151R). Therefore, when the voltage at the non-inverting input of the operational amplifier (IC2004) increases, the current of the motor (CN2) increases, the collector current of the third transistor (Q22SS8050) increases, and the voltage across the parallel circuit formed by the ninth resistor (R751R) and the tenth resistor (R151R) increases. At this point, it is necessary to reduce the current in the parallel circuit formed by the ninth resistor (R751R) and the tenth resistor (R151R), which means reducing the voltage difference between the non-inverting and inverting inputs of the operational amplifier (IC2004), and thus reducing the base current of the third transistor (Q22SS8050). This allows for constant current output regulation through negative feedback when voltage fluctuations occur.

[0073] As an optional implementation, the controller powers on the motor drive module. If the electrical signal input from the controller to the first amplifier circuit is high, and the signal input to the second amplifier circuit is also high, then the first transistor (Q4S8050) and the second transistor (Q3S8050) of the first amplifier circuit are turned on, the fourth transistor (Q5S8050) and the fifth transistor (Q12S8050) of the second amplifier circuit are turned on, the first field-effect MOSFET (U10BNCE4606) and the second field-effect MOSFET (U11BNCE4606) of the H-bridge drive circuit are turned off, and the third field-effect MOSFET (U10ANCE4606) and the fourth field-effect MOSFET (U11ANCE4606) are turned on. At this time, the current flows from the first amplifier circuit through the third field-effect MOSFET (U10ANCE4606) of the H-bridge drive circuit to the motor speed control module. This ensures the safe operation of the first power supply and the H-bridge drive circuit.

[0074] As an optional implementation, the controller powers on the motor drive module. If the electrical signal input from the controller to the first and second amplifier circuits is low-level or high-impedance, the first transistor (Q4S8050) and the second transistor (Q3S8050) of the first amplifier circuit are turned off, the fourth transistor (Q5S8050) and the fifth transistor (Q12S8050) of the second amplifier circuit are turned off, the first MOSFET (U10BNCE4606) and the second MOSFET (U11BNCE4606) of the H-bridge drive circuit are turned off, and the third MOSFET (U10ANCE4606) and the fourth MOSFET (U11ANCE4606) are turned on. At this time, the current flows from the first power supply through the fourth resistor (R703K9) and the third MOSFET (U10ANCE4606) to the motor speed control module. This ensures the safe operation of the first power supply and the H-bridge drive circuit.

[0075] As an optional implementation, the controller powers on the motor drive module. If the controller input to the first and second amplifier circuits is a normal high and low level respectively, the current flows through the first power supply and the first and fourth field-effect MOSFETs (U10BNCE4606 and U11ANCE4606) or the second and third field-effect MOSFETs (U10ANCE4606 and U11BNCE4606) of the H-bridge drive circuit, causing the motor (CN2) to start running. The motor (CN2) drives the simulated artificial hand to move through the transmission device, detecting the infrared gesture function of the range hood. When the motor (CN2) current reaches the threshold, the controller controls the input level to the first and second amplifier circuits to be low. The first transistor (Q4S8050), second transistor (Q3S8050), fourth transistor (Q5S8050), fifth transistor (Q12S8050), third MOSFET (U10ANCE4606), and fourth MOSFET (U11ANCE4606) are simultaneously turned off, while the first MOSFET (U10BNCE4606) and second MOSFET (U11BNCE4606) are turned on. At this time, the current flows from the first power supply through the fourth resistor (R703K9) and the third MOSFET (U10ANCE4606) to the motor speed control module. When the two ends of the motor (CN2) are short-circuited, it is equivalent to connecting the motor (CN2) to an infinitely large load. If the motor (CN2) rotates abnormally, its own closed-loop current becomes infinitely large and cuts the magnetic field lines, hindering its own rotation and achieving a self-locking function.

[0076] Furthermore, each MOSFET in the H-bridge drive circuit has its own body diode. When the motor (CN2) is turned off, a huge voltage spike is generated because its magnetic field cannot change abruptly. At this time, the magnetic field energy is stored in the first power supply through the body diode in the H-bridge drive circuit.

[0077] Furthermore, most household range hoods are designed with infrared gesture sensing functionality. Therefore, this function needs to be tested at the factory. The specific procedure for testing the infrared gesture sensing function of a range hood using a testing system is as follows.

[0078] The detection system for the infrared gesture function of the range hood also includes a first infrared detection circuit and a second infrared detection circuit. The first and second infrared detection circuits are identical circuits. They are located at the starting and ending points of the infrared gesture function area of ​​the range hood. When the controller controls the motor control circuit to send the corresponding adjustment voltage to the motor (CN2), the motor (CN2) rotates at the speed corresponding to the adjustment voltage. The rotation of the motor (CN2) drives the artificial hand to move via a transmission device. Different rotational speeds of the motor (CN2) result in different movement speeds of the artificial hand. The infrared detection module sends a signal to the controller when the artificial hand, driven by the transmission device, moves and blocks the signal. The controller receives the signal from the infrared detection module and records the time it takes for the artificial hand to block the first and second infrared detection circuits. This allows the determination of the time difference between the artificial hand controller moving from the first to the second infrared detection circuit. Based on this time difference and the preset initial speed of the artificial hand, the distance between the first and second infrared detection circuits, which is the distance of the infrared gesture function area of ​​the range hood, is determined. Furthermore, the controller can determine the moving speed of the artificial hand based on the time difference between its movement from the first infrared detection circuit to the second infrared detection circuit and the distance between the first and second infrared detection circuits. Following this method of calculating the artificial hand's movement speed, the artificial hand's moving speed is determined as the distance it travels from the first infrared detection circuit to the second infrared detection circuit during the preset time intervals for activating various functions of the range hood.

[0079] For example, if a user slides their hand over the infrared gesture control area of ​​the range hood for 5 seconds, the range hood will activate its lowest suction power. The controller determines the movement speed of the simulated hand based on the pre-defined distance to the infrared gesture control area and the 5-second duration of the activating lowest suction power. Based on this simulated hand movement speed, the controller determines the corresponding rotational speed of the motor (CN2). Furthermore, based on the rotational speed of motor (CN2), the controller determines the adjustment voltage to be sent to motor (CN2). In this way, a simulated hand can replace a human hand, and the duration of the simulated hand movement can be set as the preset duration for activating the range hood's infrared gesture sensing function to detect its operation.

[0080] Figure 3 This is an example diagram of an infrared detection circuit provided in an embodiment of this application. Figure 3 As shown, the infrared detection module includes a first infrared detection circuit and a second infrared detection circuit. The first infrared detection circuit includes a second power supply (VCC-5V), a third power supply (VCC-5V), a fourth power supply (VCC-5V), a sixteenth resistor (R213K), a seventeenth resistor (R2051K), an eighteenth resistor (R23100R), a nineteenth resistor (R2447K), a twentieth resistor (R25100R), a first infrared transistor pair (U3), a sixth transistor (Q28050), and a third capacitor (C12101).

[0081] The second power supply (VCC-5V) is connected to the sixteenth resistor (R213K). The sixteenth resistor (R213K) is connected to the first emitting diode (A) of the first infrared transistor pair (U3). The controller's microcontroller port (IT) is connected to the seventeenth resistor (R2051K). The seventeenth resistor (R2051K) is connected to the base of the sixth transistor (Q28050). The emitter of the sixth transistor (Q28050) is grounded. The collector of the sixth transistor (Q28050) is connected to the second emitting diode (K) of the first infrared transistor pair (U3). The third power supply (VCC-5V) is connected to the eighteenth resistor (R23100R). The eighteenth resistor (R23100R) is connected to the third receiving diode (VCC) of the first infrared transistor pair (U3). The fourth power supply (VCC-5V) is connected to the nineteenth resistor (R2447K). The nineteenth resistor (R2447K) is connected to the first receiving tube (OUT) of the first infrared transistor pair (U3) and the twentieth resistor (R25100R). The twentieth resistor (R25100R) is connected to the nineteenth resistor (R2447K), the first receiving tube (OUT) of the first infrared transistor pair (U3), the third capacitor (C12101), and the controller. The third capacitor (C12101) is connected to the twentieth resistor (R25100R), the second receiving tube (GND) of the first infrared transistor pair (U3), and the controller.

[0082] The second infrared detection circuit includes the fifth power supply (VCC-5V), the sixth power supply (VCC-5V), the seventh power supply (VCC-5V), the twenty-first resistor (R283K), the twenty-second resistor (R2751K), the twenty-third resistor (R29100R), the twenty-fourth resistor (R3047K), the twenty-fifth resistor (R31100R), the second infrared transistor pair (U4), the seventh transistor (Q38050), and the fourth capacitor (C13101).

[0083] The fifth power supply (VCC-5V) is connected to the twenty-first resistor (R283K). The twenty-first resistor (R283K) is connected to the first emitting diode (A) of the second infrared transistor pair (U4). The controller's microcontroller port (IT) is connected to the twenty-second resistor (R2751K). The twenty-second resistor (R2751K) is connected to the base of the seventh transistor (Q38050). The emitter of the seventh transistor (Q38050) is grounded. The collector of the seventh transistor (Q38050) is connected to the second emitting diode (K) of the second infrared transistor pair (U4). The sixth power supply (VCC-5V) is connected to the twenty-third resistor (R29100R). The twenty-third resistor (R29100R) is connected to the third receiving diode (VCC) of the second infrared transistor pair (U4). The seventh power supply (VCC-5V) is connected to the twenty-fourth resistor (R3047K). The 24th resistor (R3047K) is connected to the first receiving tube (OUT) of the second infrared transistor pair (U4) and the 25th resistor (R31100R). The 25th resistor (R31100R) is connected to the 24th resistor (R3047K), the first receiving tube (OUT) of the second infrared transistor pair (U4), the fourth capacitor (C13101), and the controller. The fourth capacitor (C13101) is connected to the 25th resistor (R31100R), the second receiving tube (GND) of the second infrared transistor pair (U4), and the controller.

[0084] The controller's microcontroller interface (IT) drives the transmitters (A) and (k) of the infrared transistor pair (U3) to emit PWM (Pulse-width modulation) infrared signals. The first receiver (OUT), second receiver (GND), and third receiver (VCC) of the infrared transistor pair (U3) receive the PWM infrared signals. When the simulated hand slides across the first infrared detection circuit, the simulated hand blocks the PWM infrared signals emitted by the transmitters (A) and (k) of the infrared transistor pair (U3), preventing the first receiver (OUT), second receiver (GND), and third receiver (VCC) of the infrared transistor pair (U3) from receiving the PWM infrared signals. At this time, the receivers of the infrared transistor pair (U3) will send a feedback signal IR1 back to the controller. The controller records the time when the receivers send the IR1 feedback signal. When the simulated hand slides across the second infrared detection circuit, it blocks the PWM infrared signals emitted by the transmitters (A) and (k) of the infrared pair (U3), preventing the first receiver (OUT), second receiver (GND), and third receiver (VCC) of the infrared pair (U3) from receiving the PWM infrared signals. At this time, the receiver of the infrared pair (U3) will send a feedback signal IR2 to the controller. The controller records the time it takes for the receiver to send IR2. In this way, the controller can determine the time difference between the simulated hand moving from the first infrared detection circuit to the second infrared detection circuit. Based on this time difference and the simulated hand's preset initial speed, the controller determines the distance between the first and second infrared detection circuits, which is the distance of the infrared gesture function area of ​​the range hood.

[0085] Thus, when using a detection system to monitor the infrared gesture sensing function of a range hood, the system can determine the movement speed of the simulated human hand based on the distance to the infrared gesture sensing area and the duration of each function's operation. Based on this simulated hand movement speed, the corresponding motor speed is determined. Furthermore, the controller determines the appropriate voltage to send to the motor based on its speed. This allows the system to effectively detect the infrared gesture sensing function of the range hood.

[0086] This application provides a detection system for the infrared gesture function of a range hood. Through a designed motor control circuit and infrared detection circuit, the voltage of the motor driving the human-hand slider is determined based on the distance to the infrared gesture function area and the activation duration of each function. This allows for automatic detection and verification of the infrared gesture sensing function. It eliminates the need for manual inspection of the range hood's infrared gesture sensing function, avoiding the low reliability and efficiency issues of manual inspection. Therefore, it improves the reliability and efficiency of infrared gesture sensing function detection.

[0087] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0089] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data used for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0090] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A detection system for infrared gesture function of a range hood, characterized in that, The detection system comprises an artificial hand, a transmission device, a motor, a first power supply, a controller and a motor control circuit, wherein The controller is connected with the motor through the motor control circuit; The first power supply is connected with the motor through the motor control circuit; The motor is connected with the artificial hand through the transmission device; The controller is configured to send a motor start-stop signal to the motor control circuit to control the first power supply to supply power to or cut off power from the motor; The controller is further configured to send a motor speed regulation signal to the motor control circuit to regulate the rotating speed of the motor; The motor is configured to drive the artificial hand to move through the transmission device to detect the infrared gesture function of the range hood. The motor control circuit comprises a motor driving module, a current sampling module and a motor speed regulation module; the motor driving module comprises a first amplification circuit, a second amplification circuit and an H-bridge driving circuit; the first amplification circuit is connected with the H-bridge driving circuit, the first power supply and the controller respectively; the second amplification circuit is connected with the H-bridge driving circuit, the first power supply and the controller respectively; the H-bridge driving circuit is connected with the first power supply, the first amplification circuit, the second amplification circuit, the motor and the motor speed regulation module respectively; the motor speed regulation module is connected with the H-bridge driving circuit, the current sampling module and the controller respectively; the current sampling module is connected with the motor speed regulation module and the controller respectively; the first amplification circuit and the second amplification circuit are configured to amplify the motor start-stop signal sent by the controller; the H-bridge driving circuit is configured to control the first power supply to supply power to or cut off power from the motor based on the amplified motor start-stop signal, receive the voltage sent by the motor speed regulation module, and control the motor to rotate; the current sampling module is configured to collect the current of the motor and send the current to the controller, so that the controller adjusts the speed regulation voltage issued to the motor according to the current; the motor speed regulation module is configured to receive the speed regulation voltage of the motor issued by the controller.

2. The detection system of claim 1, wherein, The H-bridge driving circuit comprises a first field effect mos tube, a second field effect mos tube, a third field effect mos tube and a fourth field effect mos tube; The D pole of the first field effect mos tube and the D pole of the second field effect mos tube are connected with the first power supply; the S pole of the first field effect mos tube is connected with the motor and the D pole of the third field effect mos tube respectively; the S pole of the second field effect mos tube is connected with the motor and the D pole of the fourth field effect mos tube respectively; the G pole of the first field effect mos tube is connected with the first amplification circuit; and the G pole of the second field effect mos tube is connected with the second amplification circuit. The S pole of the third field effect mos pipe and the S pole of the fourth field effect mos pipe are connected with the motor speed regulation module, the D pole of the third field effect mos pipe is connected with the motor and the S pole of the first field effect mos pipe respectively, the D pole of the fourth field effect mos pipe is connected with the motor and the S pole of the second field effect mos pipe respectively, the G pole of the third field effect mos pipe is connected with the first amplification circuit, and the G pole of the fourth field effect mos pipe is connected with the second amplification circuit.

3. The detection system of claim 2, wherein, The first amplification circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first triode and a second triode. The first power supply is connected with the fourth resistor and the fifth resistor respectively, the fourth resistor is connected with the base pole of the first triode, the collector pole of the second triode and the G pole of the third field effect mos pipe respectively, the fifth resistor is connected with the G pole of the first field effect mos pipe and the collector pole of the first triode respectively, the base pole of the first triode is connected with the first resistor, the third resistor and the fourth resistor respectively, the collector pole of the first triode is connected with the fifth resistor and the G pole of the first field effect mos pipe respectively, the emitting pole of the first triode is connected with the collector pole of the second triode and the G pole of the third field effect mos pipe respectively, the base pole of the second triode is connected with the second resistor, the emitting pole of the second triode is grounded, the collector pole of the second triode is connected with the first resistor, the fourth resistor and the emitting pole of the first triode respectively, the controller is connected with the first resistor and the second resistor, the first resistor is connected with the third resistor, the fourth resistor, the base pole of the first triode, the collector pole of the second triode, the G pole of the third field effect mos pipe and the controller respectively, the second resistor is connected with the base pole of the second triode and the controller respectively, and the third resistor is grounded.

4. The detection system of claim 2, wherein, The second amplification circuit comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a fourth triode and a fifth triode. The first power supply is connected with the fourteenth resistor and the fifteenth resistor respectively, the fourteenth resistor is connected with the base of the fourth triode, the collector of the fifth triode and the G terminal of the fourth field effect mos tube respectively, the fifteenth resistor is connected with the G terminal of the second field effect mos tube and the collector of the fourth triode respectively, the base of the fourth triode is connected with the eleventh resistor, the thirteenth resistor and the fourteenth resistor respectively, the collector of the fourth triode is connected with the fifteenth resistor and the G terminal of the second field effect mos tube respectively, the emitter terminal of the fourth triode is connected with the collector of the fifth triode and the G terminal of the fourth field effect mos tube respectively, the base of the fifth triode is connected with the twelfth resistor, the emitter terminal of the fifth triode is grounded, the collector of the fifth triode is connected with the eleventh resistor, the fourteenth resistor and the emitter terminal of the fourth triode respectively, the controller is connected with the eleventh resistor and the twelfth resistor, the eleventh resistor is connected with the thirteenth resistor, the fourteenth resistor, the base of the fourth triode, the collector of the fifth triode, the G terminal of the fourth field effect mos tube and the controller respectively, the twelfth resistor is connected with the base of the fifth triode and the controller respectively, and the thirteenth resistor is grounded.

5. The detection system of claim 2, wherein, The motor speed regulation module comprises an operational amplifier, a sixth resistor, a seventh resistor, an eighth resistor, a third triode, a first capacitor and a second capacitor. The non-inverting input terminal of the operational amplifier is connected with the controller, the output terminal of the operational amplifier is connected with the sixth resistor and the first capacitor respectively, the inverting input terminal of the operational amplifier is connected with the seventh resistor, the eighth resistor and the second capacitor respectively, the seventh resistor is connected with the first capacitor, the sixth resistor is connected with the base of the third triode, the collector of the third triode is connected with the S terminal of the third field effect mos tube and the S terminal of the fourth field effect mos tube respectively, the emitter terminal of the third triode is connected with the eighth resistor and the current sampling module respectively, the eighth resistor is connected with the second capacitor, and the second capacitor is grounded.

6. The detection system of claim 5, wherein, The current sampling module comprises a ninth resistor and a tenth resistor. The ninth resistor and the tenth resistor are connected in parallel, one end of the parallel circuit is connected with the emitter terminal of the third triode and the eighth resistor respectively, and the other end of the parallel circuit is connected with the controller.

7. The detection system of claim 1, wherein, The detection system of the infrared gesture function of the range hood further comprises an infrared detection module, and the controller is connected with the infrared detection module. The infrared detection module is configured to send a signal to the controller when the transmission device drives the artificial hand to move and block. The controller is further configured to receive the signal sent by the infrared detection module, determine the moving speed of the artificial hand according to the signal, and detect the infrared gesture function of the range hood according to the moving speed of the artificial hand and a preset speed.

8. The detection system of claim 7, wherein, The infrared detection module includes a first infrared detection circuit and a second infrared detection circuit; the first infrared detection circuit includes a second power supply, a third power supply, a fourth power supply, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a first infrared pair tube, a sixth triode and a third capacitor; The second power supply is connected with the sixteenth resistor, the sixteenth resistor is connected with a first emitter of the first infrared pair tube, the controller is connected with the seventeenth resistor, the seventeenth resistor is connected with a base of the sixth triode, an emitter of the sixth triode is grounded, a collector of the sixth triode is connected with a second emitter of the first infrared pair tube, the third power supply is connected with the eighteenth resistor, the eighteenth resistor is connected with a third receiver of the first infrared pair tube, the fourth power supply is connected with the nineteenth resistor, the nineteenth resistor is connected with a first receiver of the first infrared pair tube and the twentieth resistor respectively, the twentieth resistor is connected with the nineteenth resistor, the first receiver of the first infrared pair tube, the third capacitor and the controller respectively, and the third capacitor is connected with the twentieth resistor, the second receiver of the first infrared pair tube and the controller respectively.

9. The detection system of claim 8, wherein, The second infrared detection circuit includes a fifth power supply, a sixth power supply, a seventh power supply, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a second infrared pair tube, a seventh triode and a fourth capacitor; The fifth power supply is connected with the twenty-first resistor, the twenty-first resistor is connected with a first emitter of the second infrared pair tube, the controller is connected with the twenty-second resistor, the twenty-second resistor is connected with a base of the seventh triode, an emitter of the seventh triode is grounded, a collector of the seventh triode is connected with a second emitter of the second infrared pair tube, the sixth power supply is connected with the twenty-third resistor, the twenty-third resistor is connected with a third receiver of the second infrared pair tube, the seventh power supply is connected with the twenty-fourth resistor, the twenty-fourth resistor is connected with a first receiver of the second infrared pair tube and the twenty-fifth resistor respectively, the twenty-fifth resistor is connected with the twenty-fourth resistor, the first receiver of the second infrared pair tube, the fourth capacitor and the controller respectively, and the fourth capacitor is connected with the twenty-fifth resistor, a second receiver of the second infrared pair tube and the controller respectively.

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