CN110660209A

CN110660209A - Wireless remote control equipment

Info

Publication number: CN110660209A
Application number: CN201911088830.3A
Authority: CN
Inventors: 廖建兴
Original assignee: Hangzhou Tuya Information Technology Co Ltd
Current assignee: Hangzhou Tuya Information Technology Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-01-07
Also published as: WO2021088165A1

Abstract

An embodiment of the present invention provides a wireless remote control device, including: the device comprises at least two communication modules, a first key, a power supply module and a PCB board, wherein the at least two communication modules, the first key and the power supply module are mutually connected and arranged on the PCB board; the system comprises at least two communication modules, a protocol module and a control module, wherein the at least two communication modules are used for establishing wireless connection with a plurality of terminal devices, each communication module comprises a group of radio frequency modules and a group of antennas, the radio frequency modules are electrically connected with the antennas, and the radio frequency modules are internally provided with the at least one protocol module; the first key is used for inputting a control instruction to the target terminal equipment so as to control the target terminal equipment to perform corresponding operation, and the target terminal equipment is the terminal equipment which is in wireless connection with one of the at least two communication modules; the power module is used for providing power for the at least two communication modules and the first key. The wireless remote control equipment provided by the invention can realize the function of controlling various terminal equipment, has various control modes and has flexibility.

Description

Wireless remote control equipment

Technical Field

The invention relates to the field of remote control, in particular to wireless remote control equipment.

Background

With the increasing improvement of material culture and living standard of people, the types and the number of terminal devices (such as electric appliances) used in scenes of family life, work and the like are more and more, for example, common terminal devices of family life comprise televisions, air conditioners, refrigerators and the like; common terminal devices in operation are central air conditioners, monitors, coffee machines, etc. In order to improve the user experience, most of the current remote control modes of these terminal devices are controlled by adopting a wireless remote control mode (such as timing switch, adjusting volume of a television, etc.), and based on this, wireless remote control devices (also called as a wireless device, an intelligent remote controller, etc.) have come into operation.

However, the existing wireless remote control devices can only realize the control of a single control object (such as a television) generally, and the mode that a single wireless remote control device corresponds to a single terminal device means that a plurality of wireless remote control devices are often needed in a family or a group to realize the control of a plurality of terminal devices. When the number of the terminal devices is large, the corresponding large number of wireless remote control devices are placed together to easily cause disorder, and when people need to control a certain terminal device, the corresponding wireless remote control device needs to be found from the plurality of wireless remote control devices, so that great inconvenience is brought to the life of people. In addition, the existing wireless remote control equipment can only fixedly control a certain terminal equipment, the control mode is single, and the flexibility of the control system is weak.

Disclosure of Invention

The embodiment of the invention provides a wireless remote control device, which can realize the function of controlling various terminal devices, has various control modes and has flexibility.

The specific technical scheme comprises the following steps:

an embodiment of the present invention provides a wireless remote control device, including:

the device comprises at least two communication modules, a first key, a power supply module and a PCB, wherein the at least two communication modules, the first key and the power supply module are mutually connected and arranged on the PCB;

the at least two communication modules are used for establishing wireless connection with a plurality of terminal devices, each communication module comprises a group of radio frequency modules and a group of antennas, the radio frequency modules are electrically connected with the antennas, and at least one protocol module is arranged in each radio frequency module;

the first key is used for inputting a control instruction to a target terminal device to control the target terminal device to perform corresponding operation, and the target terminal device is a terminal device which is in wireless connection with one of the at least two communication modules;

the power module is used for providing power for the at least two communication modules.

Preferably, in some embodiments of the present invention, the wireless remote control device further comprises:

the infrared module and a second key, wherein the second key is a set of one or more keys;

when the first key is in a dormant state, the infrared module is used for establishing wireless connection with the plurality of terminal devices;

the second key is used for inputting a control instruction to the target terminal equipment so as to control the target terminal equipment to perform corresponding operation, and the target terminal equipment is the terminal equipment which is in wireless connection with one of the infrared modules;

the power module is also used for providing power for the infrared module.

Preferably, in some embodiments of the present invention, the at least two communication modules include a first communication module and a second communication module;

the first communication module comprises a first radio frequency module and a first antenna, the first radio frequency module is electrically connected with the first antenna, at least one first protocol module is arranged in the first radio frequency module, the first communication module is used for establishing wireless connection with first target terminal equipment according to the at least one first protocol module, and the first target terminal equipment belongs to one or more terminal equipment;

the second communication module comprises a second radio frequency module and a second antenna, the second radio frequency module is electrically connected with the second antenna, at least one second protocol module is arranged in the second radio frequency module, the second communication module is used for establishing wireless connection with second target terminal equipment according to the at least one second protocol module, and the second target terminal equipment belongs to one or more of the terminal equipment.

Preferably, in some embodiments of the present invention, the first key and the second key are disposed on a front surface of the PCB;

the first radio frequency module and the second radio frequency module are arranged on the back of the PCB;

the infrared module is arranged in a yielding groove which is formed in the back surface of the PCB and used for the infrared module to be placed in.

Preferably, in some embodiments of the present invention, the first antenna and the second antenna are disposed on a back surface of the PCB board;

or the like, or, alternatively,

the first antenna and the second antenna are arranged on the front surface of the PCB;

or the like, or, alternatively,

the first antenna and the second antenna are respectively arranged on the front surface and the back surface of the PCB.

Preferably, in some embodiments of the present invention, at least two groups of antennas included in the at least two communication modules are disposed in at least two clearance areas of the PCB, the number of antennas is the same as the number of clearance areas, each clearance area is disposed with one group of antennas, and the clearance areas are peripheral edge positions of the PCB;

the first key and the second key are located in a control area, and the control area and the clearance area are not intersected.

Preferably, in some embodiments of the present invention, the first antenna is disposed in a first clearance area of the PCB, the second antenna is disposed in a second clearance area of the PCB, and the first clearance area and the second clearance area are respectively symmetric positions of the PCB on a transverse center line.

Preferably, in some embodiments of the present invention, the wireless remote control device further comprises: a voice module and a microphone;

the first key is used for controlling the microphone to be turned on and off;

the microphone is used for acquiring a voice signal;

the voice module is used for recognizing the voice signal into a corresponding control instruction.

Preferably, in some embodiments of the present invention, the at least one protocol module includes: the module comprises one or more of a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, an NB-IOT module, a Lora module, a Sub-GHz module, an LTE Cat1e module, an eMTC module, a GPRS module, an NFC module and a UWB module.

Preferably, in some embodiments of the present invention, the antenna includes:

any one of an FPC antenna, a PCB antenna, a PIFA antenna, a metallic element antenna, a yagi antenna, a ceramic antenna, a retractable whip antenna, an inverted-L antenna, an inverted-F antenna, a metal wire antenna, a slot antenna, a microstrip patch antenna, a loop antenna, a metal wire antenna, a metal spiral antenna, or an LDS antenna.

Drawings

Fig. 1 is a schematic diagram of a wireless remote control device provided by an embodiment of the present invention;

FIG. 2 is another schematic diagram of a wireless remote control device provided by an embodiment of the present application;

fig. 3 is a schematic stacked sectional view of internal components of a wireless remote control device according to an embodiment of the present application;

fig. 4 is a schematic stacked sectional view of internal components of a wireless remote control device according to an embodiment of the present disclosure;

fig. 5 is a top view of a stack of internal components of a wireless remote control device according to an embodiment of the present application;

fig. 6 is another top view of a stack of internal components of a wireless remote control device according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating VSWR simulation of a WiFi antenna according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating an S11 simulation of a WiFi antenna according to an embodiment of the present application;

fig. 9 is a schematic diagram of VSWR simulation of a bluetooth antenna according to an embodiment of the present invention;

fig. 10 is a schematic diagram of an S11 simulation of the bluetooth antenna according to the embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Before describing the present embodiment, first, the related structure of the existing wireless remote control device on the market and some concepts that may appear in the embodiments of the present application will be described, it should be understood that the description of the structure of the existing wireless remote control device and the explanation of the related concepts in the present invention may be limited by the specific case of the present invention, but it is not intended that the present invention be limited to the specific case, and the present application only describes the portion of the structure of the existing wireless remote control device on the market that is related to the improvement point of the present invention. The wireless remote controller in the market at present mainly comprises two parts: one is an infrared remote controller, and the other is a Bluetooth remote controller. Wherein, the infrared remote controller adopts the infrared remote control principle, namely the infrared remote controller realizes the control of terminal equipment (such as household appliances, industrial equipment, medical apparatus and instruments and the like) by sending a certain control signal, the control signal is a string of infrared pulse code signals, different function key signals are expressed by the sent different code pulses, the terminal equipment receives the code pulses through an infrared receiving system and carries out corresponding decoding and execution of corresponding functions, thus realizing the purpose of the terminal equipment corresponding to the infrared remote control, but because the infrared remote controller does not have the capability of passing through barriers to control controlled objects like radio remote control, when the infrared remote controller is used, no obvious barriers can exist between the infrared remote controller and the controlled objects, and the operation can be successful only when the infrared transmitting tube of the infrared remote controller is opposite to the controlled objects, affecting the user experience. The Bluetooth remote controller establishes wireless connection between the remote controller and the terminal equipment to be controlled by utilizing a Bluetooth technology, and then realizes control over the terminal equipment by utilizing the established Bluetooth connection. For example, Huaqi AI glory remote controllers, science news flying AI remote controllers, millet AI remote controllers, etc. are simple Bluetooth schemes on the market.

Based on this, the embodiment of the present invention provides a wireless remote control device, which provides another solution to the above problem, and the wireless remote control device provided in the embodiment of the present application integrates a plurality of communication modules, and different types of wireless connections (such as bluetooth, WiFi, and the like) can be respectively established with a plurality of terminal devices through different protocol modules built in different communication modules, so as to further implement a function of controlling the terminal devices, and the wireless remote control device has various control modes and flexibility.

It should be understood that the structure of the wireless remote control device related to the present invention is only an example of the parts related to the embodiments of the present invention, and the following description of the structure of the wireless remote control device and the related conceptual explanation may be limited by the specific cases of the embodiments of the present invention, but do not represent that the present invention is limited to the specific cases, and the specific cases of different embodiments may be different, and are not limited herein.

Referring to fig. 1, in order to provide a wireless remote control device 100 according to an embodiment of the present invention, the wireless remote control device 100 adopts a stacked design to simplify components of the wireless remote control device 100, and the wireless remote control device 100 specifically includes: at least two communication modules (for convenience of understanding, only two communication modules are shown in fig. 1 as an example for illustration, which are respectively a first communication module 101 and a second communication module 102, and actually may further include three or more communication modules, which are not limited herein), a first key 103, a power module 104, and a PCB board 105, where the at least two communication modules (i.e., the first communication module 101 and the second communication module 102), the first key 103, and the power module 104 are connected to each other and disposed on the PCB board 105; the at least two communication modules (i.e. the first communication module 101 and the second communication module 102) are used for establishing wireless connection with a plurality of terminal devices, each communication module includes a set of radio frequency modules and a set of antennas (not illustrated in fig. 1), and the antennas may include, but are not limited to: any one of an FPC antenna, a PCB antenna, a PIFA antenna, a metallic element antenna, a yagi antenna, a ceramic antenna, a retractable whip antenna, an inverted-L antenna, an inverted-F antenna, a metal wire antenna, a slot antenna, a microstrip patch antenna, a loop antenna, a metal wire antenna, a metal spiral antenna, or an LDS antenna. The rf module is electrically connected to the antenna, and at least one protocol module (not shown in fig. 1) is built in the rf module, and the at least one protocol module may include but is not limited to: the module comprises one or more of a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, an NB-IOT module, a Lora module, a Sub-GHz module, an LTE Cat1e module, an eMTC module, a GPRS module, an NFC module and a UWB module.

That is, when there are two communication modules in the wireless remote control device, that is, the first communication module 101 and the second communication module 102, the first communication module 101 includes a first rf module and a first antenna (e.g., any one of an FPC antenna, a PCB antenna, a PIFA antenna, a metal piece antenna, a yagi antenna, a ceramic antenna, a retractable whip antenna, an inverted-L antenna, an inverted-F antenna, a metal wire antenna, a slot antenna, a microstrip patch antenna, a loop antenna, a metal wire antenna, a metal spiral antenna, or an LDS antenna), the first rf module is electrically connected to the first antenna, and the first rf module has at least one first protocol module (e.g., a WiFi module, a bluetooth module, a Zigbee module, a Z-wave module, an NB-IOT module, a Lora module, a Sub-GHz module, an LTE Cat1e module, an eMTC module, a GPRS module, a bluetooth module, a Zigbee module, a Z-wave module, One or more of an NFC module and a UWB module), the first communication module 101 is configured to establish a wireless connection with a first target terminal device according to the at least one first protocol module, where the first target terminal device belongs to one or more of the terminal devices; similarly, the second communication module 102 includes a second rf module electrically connected to a second antenna (e.g., any one of an FPC antenna, a PCB antenna, a PIFA antenna, a metal piece antenna, a yagi antenna, a ceramic antenna, a telescopic whip antenna, an inverted-L antenna, an inverted-F antenna, a metal wire antenna, a slot antenna, a microstrip patch antenna, a loop antenna, a metal wire antenna, a metal spiral antenna, or an LDS antenna), and at least one second protocol module (e.g., one or more of a WiFi module, a bluetooth module, a Zigbee module, a Z-wave module, an NB-IOT module, a Lora module, a Sub-GHz module, an LTECat1e module, an eMTC module, a GPRS module, an NFC module, or an LDS antenna) built in the second rf module 102, for establishing a wireless connection with a second target terminal device according to the at least one second protocol module, the second target terminal device belongs to one or more of the terminal devices.

The first key 103 is configured to input a control instruction to a target terminal device to control the target terminal device to perform a corresponding operation, where the target terminal device is a terminal device that has established a wireless connection with one of the at least two communication modules; the power module 104 is used for providing power to the at least two communication modules (i.e. the first communication module 101 and the second communication module 102) and the first key 103.

Preferably, in some embodiments of the present application, the wireless remote control device may further include an infrared module 106 as in fig. 1, and a second key, which may include a set of one or more keys (107, 108, 109 as illustrated in fig. 1 may all be referred to as second keys); when the first key 103 is in a dormant state, the infrared module 106 is configured to establish a wireless connection with the plurality of terminal devices; the second key (e.g. 107, 108, 109 in fig. 1) is configured to input a control instruction to the target terminal device to control the target terminal device to perform a corresponding operation, where the target terminal device is a terminal device that has established a wireless connection with one of the infrared modules; the power module 104 is further configured to provide power to the infrared module 106 and the second keys (e.g., 108, 109, 110).

It should be noted that, in some embodiments of the present application, the wireless remote control device further includes a microphone and a voice module, the first key 103 is used for controlling the microphone to be turned on and off, for example, when the first key 103 is pressed, the microphone is turned on for picking up a voice signal input from the outside; (the microphone and speech module are not illustrated in FIG. 1); the voice module is used for recognizing the voice signal into a corresponding control instruction.

It is also noted that in some embodiments of the invention, there are two of the following cases: A. if modules of different communication protocols are built in the first radio frequency module or the second radio frequency module (the first radio frequency module is electrically connected with the first antenna, and the second radio frequency module is electrically connected with the second antenna), and the modules of the different communication protocols work simultaneously, a problem is caused: if two or more than two different types of communication protocol modules built in the first radio frequency module (or the second radio frequency module) work simultaneously and are combined into a radio frequency signal to be output to the first antenna (or the second antenna), the two or more than two different types of wireless communication protocol signals conflict with each other, and a radio frequency channel has the problem of signal blockage; B. the protocol module in the first rf module and the protocol module in the second rf module may work simultaneously (the first rf module is electrically connected to the first antenna, and the second rf module is electrically connected to the second antenna), which may cause a problem: the first antenna and the second antenna have an isolation problem, and especially, the protocol module in the first radio frequency module and the protocol module in the second radio frequency module work in the same frequency band, and the isolation problem between the antennas is very prominent (for example, WiFi works at 2.4GHz, bluetooth works at 2.4GHz, and Zigbee works at 2.4GHz, etc.). The above problem is solved by adopting a time-sharing multiplexing mechanism: A. if the modules of two or more than two different types of communication protocols built in the first radio frequency module (or the second radio frequency module) work simultaneously, a time-sharing multiplexing mechanism is adopted, when the modules are combined into a group of radio frequency signals to be output, the problem of conflict between the signals is solved, the problem that when the radio frequency signals of two or more than two different types of wireless communication protocols are combined into a radio frequency signal to be output to the first antenna (or the second antenna), the blockage problem occurs, and the efficiency of wireless transmission is improved. B. If the protocol module in the first radio frequency module and the protocol module in the second radio frequency module work simultaneously, a time division multiplexing mechanism is adopted, and the second antenna does not work when the first antenna works; when the first antenna does not work, the second antenna works, so that the isolation problem existing in the simultaneous working of the two antennas is avoided.

In view of the above problem, in the above embodiments of the present application, what the at least two communication modules (i.e. the first communication module 101 and the second communication module 102) use to establish wireless connection fingers with a plurality of terminal devices is: before the wireless remote control device 100 controls the terminal devices, it is necessary to distribute a network to each terminal device to be controlled, that is, a one-to-one correspondence relationship is established between the control instruction sent by the wireless remote control device 100 and the terminal devices to be controlled, and then the one-to-one correspondence relationship is stored in the cloud platform or the wireless remote control device 100, so that when a controlled object (i.e., a target terminal device) needs to be controlled, the wireless remote control device 100 can identify the controlled object according to the correspondence relationship, and further control the controlled object.

For convenience of understanding, the following describes a network distribution process of the wireless remote control device in the embodiment of the present application by taking two communication modules, a first button, a voice module, and a microphone as examples:

referring to fig. 2, the wireless remote control device 702 includes a PCB 701, a WiFi protocol module and a bluetooth protocol module are built in a radio frequency module 801 of the PCB 701, and the radio frequency module 801 is connected to an antenna 901; the Zigbee protocol module and the Z-wave protocol module are built in the radio frequency module 802, and the radio frequency module 801 is connected to the antenna 901. The microphone 334 is connected to the voice module (not shown in fig. 2), and the microphone may be disposed on the front surface of the PCB or on the back surface of the PCB.

In the initial mode, the wireless remote control device 702 needs to perform distribution network setting: the WIFI protocol camera 803, the Bluetooth protocol sound box 804, the Zigbee protocol bulb 805 and the Z-wave protocol socket 806 are used for setting a distribution network. That is, the WIFI protocol camera 803 corresponds to the WIFI protocol module and the antenna 901 inside the radio frequency module 801 in the wireless remote control device 702 in the distribution network; the bluetooth protocol sound box 804 corresponds to a bluetooth protocol module and an antenna 901 inside a radio frequency module 801 in the wireless remote control device 702 in the distribution network; the Zigbee protocol bulb 805 corresponds to a Zigbee protocol module and an antenna 902 inside the radio frequency module 802 in the wireless remote control device 702 in the distribution network; the Z-wave protocol socket 806 corresponds to the Z-wave protocol module and the antenna 902 inside the radio frequency module 802 in the wireless remote control device 702 in the distribution network. At ordinary times, the voice module, the rf module 801 and the rf module 802 operate in a low power consumption state to prolong the service life of the battery in the wireless remote control device 702. The voice module may also be built in the rf module 801 or the rf module 802. When the first button 756 is pressed, the voice module is immediately activated, and when the microphone 722 sends a target call (for example, "smart, turn on the camera 803"), the corresponding voice module is immediately awakened, the corresponding radio frequency module 801 and the antenna 901 work, the radio frequency module 802, the antenna 902 and the WIFI protocol camera 803 do not have any distribution network relationship, the radio frequency module 802 cannot be awakened, and the radio frequency module 802 and the antenna 902 do not work.

As can be seen from the above description, the rf module 801 and the rf module 802 may have one or more different types of modules of wireless communication protocols respectively, and the rf module 801 is only connected to the antenna 901, and the rf module 802 is only connected to the antenna 902, that is, the antenna 901 needs to be electrically connected to one or more different types of protocol modules of wireless communication protocols, and the antenna 902 needs to be electrically connected to one or more different types of protocol modules of wireless communication protocols, so that the antenna 901 or the antenna 902 needs to support one frequency band or multiple frequency bands. Based on this, the antenna 901 or the antenna 902 may be a multiband helical antenna, a multiband microstrip antenna, a multiband PIFA antenna, or the like. The dual-band PIFA antenna is taken as an example for explanation: the PIFA antenna mainly adopts a slotting mode to realize multi-frequency work, and the shape of a slot can be rectangular, U-shaped, H-shaped and the like. A bending path and a slotted U-shaped slot loading mode are adopted for a slot of the PIFA antenna to realize the dual-band work of a Z-Wave frequency band of 800 MHz-900 MHz (for example, the Z-Wave frequency band of Chinese hong Kong is 919.80MHz, the Z-Wave frequency band of India is 865.20MHz and the like) and a Zigbee frequency band of 2.4GHz, and the overall shape of the antenna is in a 'G' shape. The slotting technology, also known as the meander technology, is realized by changing a current path through surface slotting, namely, cutting off the original current path, so that current flows in a zigzag manner around the slot edge and the path is lengthened, thereby changing a resonant frequency point. The design method has the characteristics of easiness in realization in actual processing, stable performance, low cost and the like.

It should be noted that, in the above embodiments of the present application, the present application further includes a power module 723, an infrared module 799, and a plurality of

keys

750 and 755, where the power module 723 is configured to provide power for normal operations of all components in the wireless remote control device 702, the infrared module 799 is configured to, when the microphone does not receive an instruction (i.e., the microphone key is disposed on the wireless remote control device 702, the microphone key is not pressed at ordinary times, and the related functions of the internal voice module are in a sleep mode, so as to save power consumption), only the ultra-low-consumption infrared function corresponds to the I/O pin, and is in a scan state, and is configured to detect states of the infrared function key (i.e., the

keys

750 and 755 in fig. 2). Thus, the voice function of the first key (i.e. the microphone key) and the infrared function of the second key (i.e. the key for controlling the infrared function) do not conflict with each other.

Fig. 1 and fig. 2 are diagrams illustrating the working principle of the wireless remote control device and how to solve the problem of time-division multiplexing of the rf module, and the following describes the arrangement manner of each component on the PCB, specifically as shown in fig. 3 (taking two communication modules as an example for description): the key 2 (the case includes the first key and/or the second key described in the above embodiment) is disposed on the front surface of the PCB board 1, the first rf module 3 and the second rf module 6 are disposed on the back surface of the PCB board, the infrared module is disposed in a yielding slot (not shown in fig. 3) provided on the back surface of the PCB board 1 and used for placing the infrared module, and meanwhile, in fig. 3, the first antenna 4 and the second antenna 5 are both disposed on the back surface of the PCB board 1.

Referring to fig. 5, the infrared module 308 is disposed on the back side of the PCB 301 by manual soldering or wave soldering, or the infrared module 308 is disposed on the front side of the PCB 301. Referring to fig. 5, the infrared module 308 includes an infrared light emitting diode, and an abdicating groove 282 for the infrared module 308 to be inserted is formed in the upper portion of the PCB 301, the shape of the abdicating groove 282 is funnel-shaped, the upper portion of the funnel-shaped groove is larger than the lower portion of the groove, and the infrared module 308 is placed at the central line position of the groove of the abdicating groove 282. The PCB board 301 has a transverse direction and a longitudinal direction perpendicular to each other. The groove wall of the receding groove 282 and the transverse direction of the PCB 281 form a certain included angle theta, wherein 0d is less than or equal to theta and less than 90 degrees; the purpose is to provide a reasonable emitting angle for the infrared module 308, because the dimensions of the upper and lower parts of the slot of the PCB 281 and the included angle θ formed by the slot and the transverse direction of the PCB 308 directly affect the emitting angle of the infrared diode.

Preferably, in some embodiments of the present application, the first antenna 4 and the second antenna 5 may be both disposed on the back side of the PCB board 1; or, the first antenna 4 is arranged on the front side of the PCB board 1, and the second antenna 5 is arranged on the back side of the PCB board 1; or, the first antenna 4 is disposed on the back surface of the PCB board 1, and the second antenna 5 is disposed on the front surface of the PCB board 1, which is not limited herein.

Preferably, in some embodiments of the present application, the first rf module and the second rf module may also be disposed on the front surface of the PCB, as shown in fig. 4: the first rf module 3 and the second rf module 6 are disposed on the front surface of the PCB 1, and it should be noted that the first antenna 4 is disposed on a first clearance area 11 of the PCB 1, and the second antenna 5 is disposed on a second clearance area 12 of the PCB 1, where the first clearance area 11 and the second clearance area 12 are respectively symmetric positions of the PCB 1 on a transverse center line.

For ease of understanding, reference may be made to the top view of the wireless remote control device shown in FIG. 5: the PCB 301 is provided with a second key 307 (which may include one or more keys), a first antenna 302, a second antenna 303, an infrared module 308, a first key 304, a microphone 334 (which is disposed on the front side of the PCB 301), a first rf module 132 (which is disposed on the back side of the PCB 301 to avoid influencing the layout of the keys), and a second rf module 133 (which is disposed on the back side of the PCB 301 to avoid influencing the layout of the keys). A first clearance area 306 is provided in the upper left corner of the PCB 301, the first antenna 302 is provided in the first clearance area 306, a second clearance area 305 is provided in the upper right corner of the PCB 301, and the second antenna 303 is provided in the second clearance area 305. The first rf module 132 is disposed near the first clearance area 306, so as to shorten the rf trace (not shown in fig. 5) from the first rf module 132 to the first antenna 302, reduce the loss of the rf trace, and reduce the interference of other signal traces or power traces with the rf trace. The second rf module 133 is disposed near the second clearance area 305, so as to shorten the rf trace (the rf trace is not shown in fig. 5) from the second rf module 133 to the second antenna 303, reduce the loss of the rf trace, and reduce the interference of other signal traces or power traces with the rf trace.

It should be noted that an area between the first clearance area 306 and the second clearance area 305 is referred to as a control area 309, the control area 309 is used for setting keys (such as a first key and a second key), and the control area 309 does not intersect with the first clearance area 302 and the second clearance area 303. Copper foil 310 is coated within clearance area 309. The first antenna 303 (or the second antenna 302) and the ground copper foil 310 form a vertical pulse electric field (a pulse electric field perpendicular to the PCB 301), a pulse magnetic field is formed in the direction of the vertical pulse electric field, a pulse electric field is formed in the direction of the vertical pulse magnetic field, and so on, an electromagnetic wave is formed, and a control command sent by the wireless remote control device is modulated into an electromagnetic wave to be sent to a controlled object (for example, a smart bulb, a gateway, a smart television, a smart air conditioner, a smart refrigerator, and so on). The ground copper foil 310 is an integral part of a single-ended antenna (e.g., an inverted-F antenna, a PIFA antenna, etc.), and for the inverted-F antenna and the PIFA antenna, the larger the size of the ground copper foil 310 is, the better, and especially the ground copper foil 310 in the control region 309 has a great influence on the performance indexes of the first antenna 302 and the first antenna 303. The second button 307, the second button 307 and the infrared module 308 are disposed in the control area 309, and considering that the infrared module 308 occupies a larger space and affects the layout of the second button 307, thereby affecting the design, the infrared module 308 is disposed on the back side of the PCB 301, and the second button 307 is disposed on the front side of the infrared module 308 (i.e., the front side of the PCB 301), so that the layout and the design of the second button 307 are not affected. The second button 307 and the infrared ray module 308 are preferably disposed at positions centered on the left and right ends of the PCB 301. The first key 304 is disposed on the front or rear surface of the PCB board 301, and the first key 304 is disposed within the control area 309.

It should be noted that, when there are multiple communication modules, similar to fig. 5, the multiple communication modules include multiple sets of antennas disposed in multiple clearance areas of the PCB, where the number of antennas is the same as the number of clearance areas, each clearance area is disposed with one set of antennas, and the clearance areas are positions around the periphery of the PCB; the first key and the second key are located in a control area, and the control area and the clearance area are not intersected. For convenience of understanding, the plurality of communication modules are illustrated as three, as shown in fig. 6: besides the first headroom area 305 and the second headroom area 306, the PCB 301 further has a third headroom area 1110, the third headroom area 1110 is distributed at the lower right corner of the PCB 301, a third antenna 1111 is disposed in the third headroom area 1110, and a third rf module 1112 is designed at the left side of the third headroom area 1110. The third rf module 1112 is electrically connected to the third antenna 1111 through the rc matching (not shown in fig. 6) and the rf trace (not shown in fig. 6).

It should be noted that, in order to prove the design rationality and the practicability of the wireless remote control device in the above embodiment of the present invention, on the basis of fig. 4 (taking the wireless remote control device in fig. 4 as an example of a home remote control device), Ansoft HFSS (three-dimensional structure electromagnetic field simulation software) is used to respectively perform simulation analysis on the first antenna 302 and the second antenna 303 in the home remote control device, and the following is the process of the whole simulation analysis:

the first antenna 302 is a Wifi antenna, the second antenna 303 is a Bluetooth antenna, the size of the PCB board 301 is 105mm multiplied by 31.5mm, the board thickness is 1.2mm, the Wifi antenna 302 and the Bluetooth antenna 303 both adopt inverted F serpentine antennas (belonging to PCB board-mounted antennas), the first clearance area 306 is 15.0mm multiplied by 5.54mm, and the second clearance area 305 is 16.0mm multiplied by 6.77 mm.

Fig. 7 shows a VSWR (Voltage Standing Wave Ratio) simulation diagram of the Wifi antenna, and it can be obtained from fig. 7 that VSWR <2 meets the design requirement of the bluetooth antenna. Fig. 8 shows a simulation diagram of S11 (return loss) of the Wifi antenna, and it can be derived from fig. 8 that S11<10dB meets the design requirement of the Wifi antenna of the household remote controller.

Fig. 9 shows a VSWR simulation diagram of the bluetooth antenna, and it can be derived from fig. 9 that VSWR <2 satisfies the design requirements of the bluetooth antenna. Fig. 10 shows a simulation diagram of S11 of the bluetooth antenna, and it can be derived from fig. 10 that S11<10dB meets the design requirement of the bluetooth antenna for the home remote controller.

Further, the following is a test for the first antenna 302 and the second antenna 303 in the home remote controller:

a No. 5 battery is adopted, the size of a PCB board 301 is 105mm multiplied by 31.5mm, the thickness of the board is 1.2mm, the first antenna 302 and the second antenna 303 both adopt inverted F serpentine antennas (belonging to PCB board-mounted antennas), the first antenna 302 is a WiFi antenna, the second antenna 303 is a Bluetooth antenna, the first clearance area 306 is 15.0mm multiplied by 5.54mm, and the second clearance area 305 is 16.0mm multiplied by 6.77 mm; the experimental environment comprises an OTA darkroom and a network analyzer. The polarization mode is horizontal polarization (when the actual household remote controller is used, the horizontal polarization is parallel to the ground, so the antenna belongs to the horizontal polarization).

Table 1 shows the S11 test data for the WiFi antenna 302 in the home remote control without the plastic housing: the S11 value of the first antenna 302 is-10.329 dB under the 2412MHz frequency band, the S11 value of the first antenna 302 is-10.387 dB under the 2442MHz frequency band, the S11 value of the first antenna 302 is-11.003 dB under the 2484MHz frequency band, and the S11 values of the first antenna 302 under the 2412MHz, 2442MHz and 2484MHz frequency bands are all less than-10 dB, so that the requirement of the S11 parameter of the first antenna 302 is met.

Table 1S 11 test data for the first antenna 302 without a plastic housing

Channel with a plurality of channels	Specification of test requirements	Test data	Whether or not to meet the requirements
				2412	<-10dB	-10.329	Satisfy the requirement of
2442	<-10dB	-10.387	Satisfy the requirement of
				2484	<-10dB	-11.003	Satisfy the requirement of

Table 2 shows the S11 test data for the second antenna 303 without a plastic housing: the S11 value of the second antenna 303 is-10.329 dB in a 2412MHz frequency band, the S11 value of the second antenna 303 is-12.558 dB in a 2442MHz frequency band, the S11 value of the second antenna 303 is-11.137 dB in a 2484MHz frequency band, and S11 values of the second antenna 5 in the 2412MHz, 2442MHz and 2484MHz frequency bands are all smaller than-10 dB, so that the requirement of the S11 parameter of the second antenna 303 is met.

Table 2S 11 test data for the second antenna 303 without a plastic housing

Channel with a plurality of channels	Specification of test requirements	Test data	Whether or not to meet the requirements
				2412	<-10dB	-10.6218	Satisfy the requirement of
2442	<-10dB	-12.558	Satisfy the requirement of
				2484	<-10dB	-11.137	Satisfy the requirement of

In summary, the design of the wireless remote control device in the above embodiments of the present application has rationality and practicability.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A wireless remote control device, comprising:

2. The wireless remote control device of claim 1, further comprising:

the power module is also used for providing power for the infrared module.

3. The wireless remote control device according to any one of claims 1-2, wherein the at least two communication modules are configured to establish wireless connection with a plurality of terminal devices, each communication module includes a set of rf modules and a set of antennas, the rf modules are electrically connected to the antennas, and the rf modules have at least one protocol module built therein, and the method includes:

the at least two communication modules comprise a first communication module and a second communication module;

4. Wireless remote control device according to claim 3,

the first key and the second key are arranged on the front surface of the PCB;

5. Wireless remote control device according to claim 4,

the first antenna and the second antenna are arranged on the back surface of the PCB;

or the like, or, alternatively,

6. Wireless remote control device according to any of claims 1-2,

at least two groups of antennas included by the at least two communication modules are arranged in at least two clearance areas of the PCB, the number of the antennas is the same as that of the clearance areas, each clearance area is provided with one group of antennas, and the clearance areas are the peripheral positions of the PCB;

7. Wireless remote control device according to claim 3,

the first antenna is arranged in a first clearance area of the PCB, the second antenna is arranged in a second clearance area of the PCB, and the first clearance area and the second clearance area are respectively symmetrical positions of the PCB on a transverse center line.

8. A wireless remote control device according to any of claims 1-2, wherein the wireless remote control device further comprises:

a microphone and a voice module;

the first key is used for controlling the microphone to be turned on and off;

the microphone is used for acquiring a voice signal;

9. A wireless remote control device according to any of claims 1-2, wherein the at least one protocol module comprises:

the module comprises one or more of a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, an NB-IOT module, a Lora module, a Sub-GHz module, an LTE Cat1e module, an eMTC module, a GPRS module, an NFC module and a UWB module.

10. A wireless remote control device according to any of claims 1-2, wherein the antenna comprises: