A wireless remote control device

Abstract

The embodiment of the present invention provides a wireless remote control device, including: at least two communication modules, a first button, a power module, and a PCB board, wherein the at least two communication modules, the first button, and the power module are interconnected and arranged on the PCB board; the at least two communication modules are used to establish wireless connections with multiple terminal devices, each communication module includes a group of radio frequency modules and a group of antennas, the radio frequency modules are electrically connected to the antennas, and the radio frequency modules have at least one protocol module built in; the first button is used to input control instructions to the target terminal device to control the target terminal device to perform corresponding operations, and 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 is used to provide power to the at least two communication modules and the first button. The wireless remote control device provided by the present invention can realize the function of controlling multiple terminal devices, with various control methods and flexibility.

Description

Technical Field

[0001] The invention relates to the field of remote control, and in particular to a wireless remote control device. Background Art

[0002] With the improvement of people's material culture and living standards, the types and numbers of terminal devices (such as electrical appliances) used in family life and work are increasing. For example, common terminal devices in family life include TV, air conditioner, refrigerator, etc.; common terminal devices at work include central air conditioner, monitor, coffee machine, etc. In order to improve the user experience, most of the remote control methods of these terminal devices are currently controlled by wireless remote control (such as timer switch, adjusting TV volume, etc.). Based on this, wireless remote control devices (also called wireless devices, smart remote controls, etc.) came into being.

[0003] However, existing wireless remote control devices can generally only control a single control object (such as a TV). This way of a single wireless remote control device corresponding to a single terminal device means that a family or group often needs multiple wireless remote control devices to control multiple terminal devices. When there are a large number of terminal devices, it is easy to cause confusion when the corresponding wireless remote control devices are put together. When people need to control a certain terminal device, they need to find the corresponding one from multiple wireless remote control devices, which brings great inconvenience to people's lives. In addition, the existing wireless remote control devices can only control a certain terminal device in a fixed manner, the control method is single, and the control system has weak flexibility. Summary of the invention

[0004] The embodiment of the present invention provides a wireless remote control device, which can realize the function of controlling various terminal devices, has various control modes and is flexible.

[0005] Specific technical solutions include:

[0006] An embodiment of the present invention provides a wireless remote control device, including:

[0007] At least two communication modules, a first button, a power module, and a PCB board, wherein the at least two communication modules, the first button, and the power module are connected to each other and are arranged on the PCB board;

[0008] The at least two communication modules are used to establish wireless connections with multiple terminal devices, each communication module includes a group of radio frequency modules and a group of antennas, the radio frequency modules are electrically connected to the antennas, and the radio frequency modules have at least one protocol module built in;

[0009] The first button is used to input a control instruction to a target terminal device to control the target terminal device to perform a corresponding operation, and the target terminal device is a terminal device that has established a wireless connection with one of the at least two communication modules;

[0010] The power module is used to provide power to the at least two communication modules.

[0011] Preferably, in some embodiments of the present invention, the wireless remote control device further comprises:

[0012] an infrared module and a second button, wherein the second button is a collection of one or more buttons;

[0013] When the first button is in a dormant state, the infrared module is used to establish a wireless connection with the multiple terminal devices;

[0014] The second button is used to input a control instruction to the target terminal device to control the target terminal device to perform a corresponding operation, and the target terminal device is a terminal device that has established a wireless connection with one of the infrared modules;

[0015] The power module is also used to provide power to the infrared module.

[0016] Preferably, in some embodiments of the present invention, the at least two communication modules include a first communication module and a second communication module;

[0017] The first communication module includes a first radio frequency module and a first antenna, the first radio frequency module is electrically connected to the first antenna, the first radio frequency module has at least one first protocol module built in, and the first communication module is used to establish a wireless connection with a first target terminal device according to the at least one first protocol module, and the first target terminal device belongs to one or more of the terminal devices;

[0018] The second communication module includes a second RF module and a second antenna. The second RF module is electrically connected to the second antenna. The second RF module has at least one second protocol module built in. The second communication module is used to establish a wireless connection with a second target terminal device based on the at least one second protocol module. The second target terminal device belongs to one or more of the terminal devices.

[0019] Preferably, in some embodiments of the present invention, the first button and the second button are arranged on the front side of the PCB board;

[0020] The first radio frequency module and the second radio frequency module are arranged on the back side of the PCB board;

[0021] The infrared module is arranged on a recess opened on the back of the PCB board and is used for placing the infrared module.

[0022] Preferably, in some embodiments of the present invention, the first antenna and the second antenna are arranged on the back side of the PCB board;

[0023] or,

[0024] The first antenna and the second antenna are arranged on the front side of the PCB board;

[0025] or,

[0026] The first antenna and the second antenna are respectively arranged on the front side and the back side of the PCB board.

[0027] Preferably, in some embodiments of the present invention, the at least two groups of antennas included in the at least two communication modules are arranged in at least two clearance areas of the PCB board, the number of antennas is the same as the number of clearance areas, each clearance area is provided with a group of antennas, and the clearance area is the edge position around the PCB board;

[0028] The first button and the second button are located in a control area, and the control area has no intersection with the clearance area.

[0029] Preferably, in some embodiments of the present invention, the first antenna is arranged in a first clearance area of ​​the PCB board, and the second antenna is arranged in a second clearance area of ​​the PCB board, and the first clearance area and the second clearance area are respectively symmetrical positions on the horizontal midline of the PCB board.

[0030] Preferably, in some embodiments of the present invention, the wireless remote control device further includes: a voice module and a microphone;

[0031] The first button is used to control the microphone to be turned on and off;

[0032] The microphone is used to obtain voice signals;

[0033] The voice module is used to recognize the voice signal into a corresponding control instruction.

[0034] Preferably, in some embodiments of the present invention, the at least one protocol module includes: one or more of a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, a NB-IOT module, a Lora module, a Sub-GHz module, a LTE Cat1e module, an eMTC module, a GPRS module, an NFC module, and a UWB module.

[0035] Preferably, in some embodiments of the present invention, the antenna comprises:

[0036] Any one of FPC antenna, PCB antenna, PIFA antenna, metal antenna, Yagi antenna, ceramic antenna, retractable whip antenna, inverted L antenna, inverted F antenna, metal wire antenna, slot antenna, microstrip patch antenna, loop antenna, metal wire antenna, metal spiral antenna or LDS antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a wireless remote control device provided by an embodiment of the present invention;

[0038] Figure 2 Another schematic diagram of a wireless remote control device provided by an embodiment of the present application;

[0039] Figure 3 A schematic diagram of a stacked cross-section of the internal components of a wireless remote control device provided in an embodiment of the present application;

[0040] Figure 4 Another schematic diagram of a stacked cross section of components inside the wireless remote control device provided in an embodiment of the present application;

[0041] Figure 5 A top view of the stacking of components inside the wireless remote control device provided in an embodiment of the present application;

[0042] Figure 6 Another top view of the stacking of components inside the wireless remote control device provided in an embodiment of the present application;

[0043] Figure 7 This is a schematic diagram of VSWR simulation of the WiFi antenna according to an embodiment of the present application;

[0044] Figure 8 This is a simulation diagram of S11 of the WiFi antenna according to an embodiment of the present application;

[0045] Fig. 9 This is a schematic diagram of VSWR simulation of the Bluetooth antenna according to an embodiment of the present application;

[0046] Fig.10 This is a simulation diagram of S11 of the Bluetooth antenna according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] Before introducing this embodiment, the relevant structures of the existing wireless remote control devices on the market and some concepts that may appear in the embodiments of this application are first introduced. It should be understood that the description of the structure of the existing wireless remote control devices and the explanation of the related concepts in the present invention may be limited due to the specific situation of the present invention, but it does not mean that the present invention is limited to the specific situation. In addition, this application only introduces the structure of the existing wireless remote control devices on the market and the parts related to the improvement points of the present invention. Currently, the wireless remote controls on the market are mainly divided into two parts: one is an infrared remote control and the other is a Bluetooth remote control. Among them, the infrared remote control adopts the principle of infrared remote control, that is, the infrared remote control controls the terminal equipment (such as household appliances, industrial equipment, medical equipment, etc.) by sending certain control signals. This control signal is a string of infrared pulse coding signals. Different coding pulses are sent to represent different function button signals. The terminal equipment receives the coded pulses through the infrared receiving system, and performs corresponding decoding to execute the corresponding functions. In this way, the purpose of the terminal equipment corresponding to the infrared remote control is achieved. However, since the infrared remote control does not have the ability to control the controlled object through obstacles like a radio remote control, when using the infrared remote control, there must be no obvious obstacles between the infrared remote control and the controlled object, and the infrared transmitting tube of the infrared remote control needs to be facing the controlled object to operate successfully, affecting the user experience. The Bluetooth remote control uses Bluetooth technology to establish a wireless connection between the remote control and the terminal device to be controlled, and then uses the established Bluetooth connection to control the terminal device. At present, a Bluetooth remote control only has a set of RF modules and a Bluetooth protocol module to achieve the above-mentioned control of the terminal device. This control method is very simple. Bluetooth pairing is required before use. It can only be used after pairing is successful, and the controlled object is single. Generally, a Bluetooth remote control can only control a corresponding terminal device. For example, the Huawei AI Honor remote control, iFlytek AI remote control, Xiaomi AI remote control, etc. on the market are all simple Bluetooth solutions.

[0049] Based on this, an embodiment of the present invention provides a wireless remote control device, which proposes another solution to the above-mentioned problem. The wireless remote control device provided by the embodiment of the present application integrates multiple communication modules internally. Through different protocol modules built into different communication modules, different types of wireless connections (such as Bluetooth, WiFi, etc.) can be established with multiple terminal devices respectively, thereby realizing the function of controlling these terminal devices. The control methods are diverse and flexible.

[0050] It should be understood that the structure of the wireless remote control device involved in the present invention only illustrates the part related to the embodiment 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 due to the specific circumstances of the embodiment of the present invention, but it does not mean that the present invention is limited to the specific circumstances. There may be differences in the specific circumstances of different embodiments, which are not specifically limited here.

[0051] See also Figure 1 , is a wireless remote control device 100 provided by an embodiment of the present invention. The wireless remote control device 100 adopts a stacking design to simplify the components of the wireless remote control device 100. The wireless remote control device 100 specifically includes: at least two communication modules (for ease of understanding, Figure 1 Only two communication modules are shown as an example for illustration, namely, a first communication module 101 and a second communication module 102, and in fact, three or more communication modules may be included, which are not limited here), a first button 103, a power module 104, and a PCB board 105. The at least two communication modules (i.e., the first communication module 101 and the second communication module 102), the first button 103, and the power module 104 are interconnected and arranged 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 to establish a wireless connection with multiple terminal devices, and each communication module includes a group of radio frequency modules and a group of antennas ( Figure 1 The antenna may include but is not limited to: any one of: FPC antenna, PCB antenna, PIFA antenna, metal antenna, Yagi antenna, ceramic antenna, retractable whip antenna, inverted L antenna, inverted F antenna, metal wire antenna, slot antenna, microstrip patch antenna, loop antenna, metal wire antenna, metal spiral antenna or LDS antenna. The RF module is electrically connected to the antenna, and the RF module has at least one protocol module ( Figure 1 Not shown in the figure), the at least one protocol module may include but is not limited to: one or more of a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, a NB-IOT module, a Lora module, a Sub-GHz module, a LTE Cat1e module, an eMTC module, a GPRS module, an NFC module, and a UWB module.

[0052] That is to say, when there are two communication modules in the wireless remote control device, namely, a first communication module 101 and a second communication module 102, the first communication module 101 includes a first radio frequency module and a first antenna (such as an FPC antenna, a PCB antenna, a PIFA antenna, a metal 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 radio frequency module is electrically connected to the first antenna, and the first radio frequency module has at least one first protocol module built in (such as a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, a NB-IOT module, a Lora module, a Sub-GHz module, an LTE Cat1e module, eMTC module, GPRS module, NFC module, one or more of UWB module), the first communication module 101 is used to establish a wireless connection with a first target terminal device according to the at least one first protocol module, and 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 and a second antenna (such as an FPC antenna, a PCB antenna, a PIFA antenna, a metal 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 The second RF module is electrically connected to the second antenna, and the second RF module has at least one second protocol module built in (such as a WiFi module, a Bluetooth module, a Zigbee module, a Z-wave module, a NB-IOT module, a Lora module, a Sub-GHz module, a LTECat1e module, an eMTC module, a GPRS module, an NFC module, and a UWB module), and the second communication module 102 is used to establish a wireless connection with a second target terminal device according to the at least one second protocol module, and the second target terminal device belongs to one or more of the terminal devices.

[0053] The first button 103 is used to input control instructions to the target terminal device to control the target terminal device to perform corresponding operations, and 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 to provide power to the at least two communication modules (i.e., the first communication module 101 and the second communication module 102) and the first button 103.

[0054] Preferably, in some embodiments of the present application, the wireless remote control device may also include: Figure 1The infrared module 106 and the second button in the embodiment, wherein the second button may include one or more buttons (such as Figure 1 107, 108, 109 shown in the figure can be referred to as a second button); when the first button 103 is in a dormant state, the infrared module 106 is used to establish a wireless connection with the plurality of terminal devices; the second button (such as Figure 1 107, 108, 109) are used to input control instructions to the target terminal device to control the target terminal device to perform corresponding operations, and 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 also used to provide power to the infrared module 106 and the second button (such as 108, 109, 110).

[0055] 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, and the first button 103 is used to control the opening and closing of the microphone. For example, when the first button 103 is pressed, the microphone is turned on to pick up a voice signal input from the outside; ( Figure 1 The microphone and the voice module are not shown); the voice module is used to recognize the voice signal into a corresponding control instruction.

[0056] It should also be noted that in some embodiments of the present invention, there are two of the following situations: A. If the first RF module or the second RF module has built-in modules of different communication protocols (the first RF module is electrically connected to the first antenna, and the second RF module is electrically connected to the second antenna), and these modules of different communication protocols work at the same time, this will bring about a problem: if two or more modules of different types of communication protocols built into the first RF module (or the second RF module) work at the same time, and are combined into one RF signal and output to the first antenna (or the second antenna), the two or more different types of wireless communication protocol signals will be in direct contact with each other. There is a conflict, and the RF channel has a signal jam problem; B. The protocol module in the first RF module and the protocol module in the second RF module may work at the same time (the first RF module is electrically connected to the first antenna, and the second RF module is electrically connected to the second antenna). This will bring a problem: there is an isolation problem between the first antenna and the second antenna, especially the protocol module in the first RF module and the protocol module in the second RF 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, Zigbee works at 2.4GHz, etc.). The above problems use a time-division multiplexing mechanism to solve the above two problems: A. If two or more modules of different types of communication protocols built into the first RF module (or the second RF module) work at the same time, a time-division multiplexing mechanism is used to combine them into a group of RF signals for output, so as to solve the conflict problem between the signals, so that the RF signals of two or more different types of wireless communication protocols are not combined into one RF signal and output to the first antenna (or the second antenna), and the jam problem occurs, and the efficiency of wireless transmission is improved. B. If the protocol module in the first RF module and the protocol module in the second RF module work at the same time, a time-division multiplexing mechanism is adopted. When the first antenna is working, the second antenna is not working; when the first antenna is not working, the second antenna is working. This avoids the isolation problem that exists when the two antennas work at the same time.

[0057] Based on the above problems, in the above embodiments of the present application, the at least two communication modules (i.e., the first communication module 101 and the second communication module 102) are used to establish a wireless connection with multiple terminal devices, which means that before the wireless remote control device 100 controls the terminal device, it is necessary to first configure the network for each terminal device that needs to be controlled, that is, to establish a one-to-one correspondence between the control instructions sent by the wireless remote control 100 and the multiple terminal devices that need to be controlled, and then store the one-to-one correspondence in the cloud platform or the wireless remote control device 100, so that when a certain controlled object (i.e., the target terminal device) needs to be controlled, the wireless remote control device 100 can identify the controlled object according to the corresponding relationship and then control the controlled object.

[0058] For ease of understanding, the network configuration process of the wireless remote control device in the embodiment of the present application is described below using two communication modules, a first button, a voice module and a microphone as an example:

[0059] See also Figure 2 The wireless remote control device 702 includes a PCB board 701, a WiFi protocol module and a Bluetooth protocol module are built into the RF module 801 of the PCB board 701, and the RF module 801 is connected to the antenna 901; the RF module 802 has a Zigbee protocol module and a Z-wave protocol module built into it, and the RF module 801 is connected to the antenna 901. Microphone 334 and voice module ( Figure 2 The microphone can be arranged on the front side of the PCB board or on the back side of the PCB board.

[0060] In the initial mode, the wireless remote control device 702 needs to be configured with a network: the WIFI protocol camera 803, the Bluetooth protocol speaker 804, the Zigbee protocol light bulb 805, and the Z-wave protocol socket 806 need to be configured with a network. That is, the WIFI protocol camera 803 corresponds to the WIFI protocol module and antenna 901 inside the radio frequency module 801 of the wireless remote control device 702 in the network configuration; the Bluetooth protocol speaker 804 corresponds to the Bluetooth protocol module and antenna 901 inside the radio frequency module 801 of the wireless remote control device 702 in the network configuration; the Zigbee protocol light bulb 805 corresponds to the Zigbee protocol module and antenna 902 inside the radio frequency module 802 of the wireless remote control device 702 in the network configuration; and the Z-wave protocol socket 806 corresponds to the Z-wave protocol module and antenna 902 inside the radio frequency module 802 of the wireless remote control device 702 in the network configuration. Normally, the voice module, the RF module 801, and the RF module 802 work in a low-power power-saving state to extend the battery life of the wireless remote control device 702. The voice module can also be built into the RF module 801 and the RF module 802. When the first button 756 is pressed, the voice module is immediately activated, and when the microphone 722 issues a target call (such as: "Xiaozhi, turn on the camera 803"), the corresponding voice module is immediately awakened, and the corresponding RF module 801 and antenna 901 work, while the RF module 802, antenna 902 and WIFI protocol camera 803 have no network configuration relationship, the RF module 802 will not wake up, and the RF module 802 and antenna 902 will not work.

[0061] As can be seen from the above, since the RF module 801 and the RF module 802 can respectively have one or more modules of different types of wireless communication protocols built in, 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 the protocol modules of one or more different types of wireless communication protocols, and the antenna 902 also needs to be electrically connected to the protocol modules of one or more different types of wireless communication protocols, so 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 can adopt a multi-band spiral antenna, a multi-band microstrip antenna, a multi-band PIFA antenna, etc. Take the dual-band PIFA antenna as an example to illustrate: the PIFA antenna mostly uses a slotted method to achieve multi-frequency operation, and the shape of the slot can be rectangular, U-shaped, H-shaped, etc. The slot of the PIFA antenna adopts a bending path and slotted U-shaped slot loading method to achieve dual-band operation of the Z-Wave band 800MHz~900MHz and the Zigbee band 2.4GHz. The overall shape of the antenna is a "G" shape. Slotting technology, also known as "meandering technology", is achieved by changing the current path by slotting the surface, that is, cutting off the original current path, so that the current flows around the slot edge in a zigzag manner and the path becomes longer, thereby changing the resonant frequency point. This design method is easy to implement in actual processing, with stable performance and low cost.

[0062] It should be noted that, in the above-mentioned embodiment of the present application, a power module 723, an infrared module 799 and a plurality of buttons 750-755 are also included, wherein the power module 723 is used to provide power for the normal operation of all components of the wireless remote control device 702, and the infrared module 799 is used when the microphone does not receive instructions (that is, a microphone button is provided on the wireless remote control device 702, and the microphone button is not pressed at ordinary times, and the related functions of the internal voice module are in sleep mode to save power consumption), only the I / O pin corresponding to the ultra-low-power infrared function is in a scanning state, which is used to detect the infrared function button (that is, Figure 2 In this way, there is no conflict between the voice function of the first button (i.e., the microphone button) and the infrared function of the second button (i.e., the button for controlling the infrared function).

[0063] Figure 1 as well as Figure 2 The corresponding embodiments are to illustrate the working principle of the wireless remote control device and how to solve the problem of simultaneous multiplexing of RF modules. The following is an explanation of the arrangement of various components on the PCB board. Figure 3As shown (taking two communication modules as an example for explanation): a button 2 (this case includes the first button and / or the second button described in the above embodiment) is arranged on the front side of the PCB board 1, a first RF module 3 and a second RF module 6 are arranged on the back side of the PCB board, and an infrared module is arranged on a recess ( Figure 3 not shown), and at the same time Figure 3 In the embodiment, the first antenna 4 and the second antenna 5 are both arranged on the back side of the PCB board 1.

[0064] See also Figure 5 As shown, the infrared module 308 is set on the back of the PCB board 301 by manual welding or wave soldering, or the infrared module 308 is set on the front of the PCB board 301. Figure 5 As shown, the infrared module 308 includes an infrared light emitting diode, and a clearance groove 282 for the infrared module 308 to be placed is opened on the upper part of the PCB board 301. The groove shape of the clearance groove 282 is funnel-shaped, and the upper part of the funnel-shaped groove is larger than the lower part of the groove. The infrared module 308 is placed at the midline position of the groove of the clearance groove 282. The PCB board 301 has mutually perpendicular horizontal and vertical directions. The groove wall of the clearance groove 282 forms a certain angle θ with the horizontal direction of the PCB board 281: 0d≦θ<90 degrees; the purpose is to provide a reasonable emission angle for the infrared module 308, because the upper and lower dimensions of the groove of the PCB board 281 and the angle θ formed by the groove and the horizontal direction of the PCB board 308 directly affect the emission angle of the infrared diode.

[0065] Preferably, in some embodiments of the present application, the first antenna 4 and the second antenna 5 can actually be both arranged 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 arranged on the back side of the PCB board 1 and the second antenna 5 is arranged on the front side of the PCB board 1, and the specific details are not limited here.

[0066] Preferably, in some embodiments of the present application, the first RF module and the second RF module may also be arranged on the front side of the PCB board, as shown in FIG. Figure 4 As shown: the first RF module 3 and the second RF module 6 are arranged on the front side of the PCB board 1. At the same time, it should be noted that the first antenna 4 is arranged in the first clearance area 11 of the PCB board 1, and the second antenna 5 is arranged in the second clearance area 12 of the PCB board 1. The first clearance area 11 and the second clearance area 12 are respectively symmetrical positions on the horizontal midline of the PCB board 1.

[0067] For easier understanding, please refer to Figure 5The top view of the wireless remote control device shown in the figure: the PCB board 301 is provided with a second button 307 (which may include one or more), a first antenna 302, a second antenna 303, an infrared module 308, a first button 304, a microphone 334 (placed on the front of the PCB board 301), a first RF module 132 (placed on the back of the PCB board 301 to avoid affecting the layout of the buttons), and a second RF module 133 (placed on the back of the PCB board 301 to avoid affecting the layout of the buttons). A first clearance area 306 is provided in the upper left corner of the PCB board 301, and 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 board 301, and the second antenna 303 is provided in the second clearance area 305. The first RF module 132 is provided near the first clearance area 306, so that the RF trace between the first RF module 132 and the first antenna 302 is shortened ( Figure 5 The RF routing is not shown), reducing the loss of the RF routing and reducing the interference of other signal routing or power routing on the RF routing. The second RF module 133 is arranged near the second clearance area 305, thus shortening the RF routing between the second RF module 133 and the second antenna 303 ( Figure 5 The RF routing is not shown), which reduces the loss of the RF routing and reduces the interference of other signal routing or power routing on the RF routing.

[0068] It should be noted that the area between the first clearance area 306 and the second clearance area 305 is called the control area 309, which is used to set buttons (such as the first button and the second button), and the control area 309 has no intersection with the first clearance area 302 and the second clearance area 303. The clearance area 309 is covered with a ground copper foil 310. The first antenna 303 (or the second antenna 302) and the ground copper foil 310 form a vertical pulse electric field (perpendicular to the pulse electric field of the PCB board 301), a pulse magnetic field is formed in the direction of the vertical pulse electric field, and a pulse electric field is formed in the direction of the vertical pulse magnetic field, and so on, to form electromagnetic waves, and the control instructions issued by the wireless remote control device are modulated into electromagnetic waves and sent to the controlled object (such as smart light bulbs, gateways, smart TVs, smart air conditioners, smart refrigerators, etc.). The ground copper foil 310 is an integral part of a single-ended antenna (such as an inverted F antenna, a PIFA antenna, etc.). For an inverted F antenna or a PIFA antenna, the larger the size of the ground copper foil 310, the better. In particular, the ground copper foil 310 in the control area 309 has a great influence on the performance indicators of the first antenna 302 and the first antenna 303. The second button 307, the second button 307 and the infrared module 308 are arranged in the control area 309. Considering that the infrared module 308 occupies a large space, it will affect the layout of the second button 307, thereby affecting the appearance design. Therefore, the infrared module 308 is arranged on the back of the PCB board 301, and the second button 307 is arranged on the front of the infrared module 308 (that is, the front of the PCB board 301), so as not to affect the layout and appearance design of the second button 307. It is preferred that the second button 307 and the infrared module 308 are arranged at the center of the left and right ends of the PCB board 301. The first button 304 is arranged on the front or back of the PCB board 301, and the first button 304 is arranged in the control area 309.

[0069] It should be noted that when there are multiple communication modules, Figure 5 Similarly, the multiple communication modules include multiple antennas arranged in multiple clearance areas of the PCB board, the number of antennas is the same as the number of clearance areas, each clearance area is provided with a group of antennas, and the clearance area is the edge position around the PCB board; the first button and the second button are located in the control area, and the control area has no intersection with the clearance area. For ease of understanding, the example of three multiple communication modules is used for explanation. Figure 6 As shown in the figure, in addition to the first clearance area 305 and the second clearance area 306, the PCB board 301 also has a third clearance area 1110, which is located at the lower right corner of the PCB board 301. A third antenna 1111 is arranged in the third clearance area 1110, and a third RF module 1112 is designed on the left side of the third clearance area 1110. The third RF module 1112 is matched by resistance and capacitance ( Figure 6Not shown), RF routing ( Figure 6 (not shown) is electrically connected to the third antenna 1111.

[0070] It should be noted that in order to prove the design rationality and practicality of the wireless remote control device in the above embodiment of the present invention, Figure 4 Based on Figure 4 Taking the wireless remote control device in the example of a home remote control, Ansoft HFSS (three-dimensional structure electromagnetic field simulation software) is used to simulate and analyze the first antenna 302 and the second antenna 303 in the home remote control. The following is the whole simulation and analysis process:

[0071] The first antenna 302 is a Wifi antenna, the second antenna 303 is a Bluetooth antenna, the PCB board 301 has a size of 105mm×31.5mm and a thickness of 1.2mm. The Wifi antenna 302 and the Bluetooth antenna 303 both use an inverted F snake antenna (a PCB onboard antenna), the first clearance area 306 is 15.0mm×5.54mm, and the second clearance area 305 is 16.0mm×6.77mm.

[0072] Figure 7 The VSWR (Voltage Standing Wave Ratio) simulation diagram of the Wifi antenna is given. Figure 7 It can be concluded that VSWR<2, which meets the design requirements of Bluetooth antenna. Figure 8 The S11 (return loss) simulation diagram of the Wifi antenna is given. Figure 8 It can be concluded that S11<10dB, which meets the design requirements of home remote control Wifi antenna.

[0073] Fig. 9 The VSWR simulation diagram of the Bluetooth antenna is given. Fig. 9 It can be concluded that VSWR<2, which meets the design requirements of Bluetooth antenna. Fig.10 The S11 simulation diagram of the Bluetooth antenna is given. Fig.10 It can be concluded that S11<10dB, which meets the design requirements of home remote control Bluetooth antenna.

[0074] In addition, the following is a test for the first antenna 302 and the second antenna 303 in the home remote control:

[0075] No. 5 battery is used. The size of PCB board 301 is 105mm×31.5mm, the thickness is 1.2mm, the first antenna 302 and the second antenna 303 both use inverted F snake antenna (PCB onboard antenna), the first antenna 302 is a WiFi antenna, the second antenna 303 is a Bluetooth antenna, the first clearance area 306 is 15.0mm×5.54mm, and the second clearance area 305 is 16.0mm×6.77mm; the experimental environment includes OTA darkroom and network analyzer. The polarization mode is horizontal polarization (the actual home remote control is horizontally parallel to the ground when used, so the antenna is horizontally polarized).

[0076] Table 1 gives the S11 test data of the WiFi antenna 302 in the home remote control without a plastic shell: the S11 value of the first antenna 302 in the 2412MHz frequency band is -10.329dB, the S11 value of the first antenna 302 in the 2442MHz frequency band is -10.387dB, and the S11 value of the first antenna 302 in the 2484MHz frequency band is -11.003dB. The S11 values ​​of the first antenna 302 in the three frequency bands of 2412MHz, 2442MHz, and 2484MHz are all less than -10dB, meeting the S11 parameter requirements of the first antenna 302.

[0077] Table 1 S11 test data of the first antenna 302 without a plastic housing

[0078]

[0079] Table 2 gives the S11 test data of the second antenna 303 without a plastic casing: the S11 value of the second antenna 303 in the 2412MHz frequency band is -10.329dB, the S11 value of the second antenna 303 in the 2442MHz frequency band is -12.558dB, the S11 value of the second antenna 303 in the 2484MHz frequency band is -11.137dB, and the S11 values ​​of the second antenna 5 in the three frequency bands of 2412MHz, 2442MHz, and 2484MHz are all less than -10dB, meeting the S11 parameter requirements of the second antenna 303.

[0080] Table 2 S11 test data of the second antenna 303 without plastic casing

[0081]

[0082] In summary, it can be seen that the design of the wireless remote control device in the above embodiments of the present application is reasonable and practical.

[0083] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept 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, characterized in that: include: At least two communication modules, a first button, a power module, a PCB board, a microphone and a voice module, wherein the at least two communication modules, the first button and the power module are connected to each other and arranged on the PCB board; The at least two communication modules include a first communication module and a second communication module; The first communication module includes a first radio frequency module and a first antenna, the first radio frequency module is electrically connected to the first antenna, and the first radio frequency module has at least one first protocol module built in; The second communication module includes a second radio frequency module and a second antenna, the second radio frequency module is electrically connected to the second antenna, and the second radio frequency module has at least one second protocol module built in; When the target conditions are met, a time-division multiplexing mechanism is used for signal transmission, wherein the target conditions are met including: first protocol modules of two or more different types of communication protocols built into the first radio frequency module work simultaneously, or, second protocol modules of two or more different types of communication protocols built into the second radio frequency module work simultaneously, or, at least one first protocol module built into the first radio frequency module and at least one second protocol module built into the second radio frequency module work simultaneously; The first button is used to input a control instruction to a target terminal device to control the target terminal device to perform a corresponding operation, and 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 supply module is used to provide power to the at least two communication modules; The first button is used to control the microphone to be turned on and off; The microphone is used to obtain voice signals; The voice module is used to recognize the voice signal into a corresponding control instruction.

2. The wireless remote control device according to claim 1, characterized in that: The wireless remote control device also includes: an infrared module and a second button, wherein the second button is a collection of one or more buttons; When the first button is in a dormant state, the infrared module is used to establish a wireless connection with the multiple terminal devices; The second button is used to input a control instruction to the target terminal device to control the target terminal device to perform a corresponding operation, and the target terminal device is a terminal device that has established a wireless connection with one of the infrared modules; The power module is also used to provide power to the infrared module.

3. The wireless remote control device according to any one of claims 1 to 2, characterized in that: The first communication module is used to establish a wireless connection with a first target terminal device according to the at least one first protocol module, and the first target terminal device belongs to one or more of the terminal devices; The second communication module is used to establish a wireless connection with a second target terminal device according to the at least one second protocol module, and the second target terminal device belongs to one or more of the terminal devices.

4. The wireless remote control device according to claim 3, characterized in that: The first button and the second button are arranged on the front side of the PCB board; The first radio frequency module and the second radio frequency module are arranged on the back side of the PCB board; The infrared module is arranged on a recess opened on the back of the PCB board and is used for placing the infrared module.

5. The wireless remote control device according to claim 4, characterized in that: The first antenna and the second antenna are arranged on the back side of the PCB board; or, The first antenna and the second antenna are arranged on the front side of the PCB board; or, The first antenna and the second antenna are respectively arranged on the front side and the back side of the PCB board.

6. The wireless remote control device according to any one of claims 1-2, characterized in that: The at least two groups of antennas included in the at least two communication modules are arranged in at least two clearance areas of the PCB board, the number of antennas is the same as the number of clearance areas, each clearance area is provided with a group of antennas, and the clearance areas are the edge positions around the PCB board; The first button and the second button are located in a control area, and the control area has no intersection with the clearance area.

7. The wireless remote control device according to claim 3, characterized in that: The first antenna is arranged in a first clearance area of ​​the PCB board, and the second antenna is arranged in a second clearance area of ​​the PCB board. The first clearance area and the second clearance area are respectively symmetrical positions on the horizontal midline of the PCB board.

8. The wireless remote control device according to any one of claims 1 to 2, characterized in that: The at least one protocol module comprises: One or more of WiFi module, Bluetooth module, Zigbee module, Z-wave module, NB-IOT module, Lora module, Sub-GHz module, LTE Cat1e module, eMTC module, GPRS module, NFC module, and UWB module.

9. The wireless remote control device according to any one of claims 1 to 2, characterized in that: The antenna comprises: Any one of FPC antenna, PCB antenna, PIFA antenna, metal antenna, Yagi antenna, ceramic antenna, retractable whip antenna, inverted L antenna, inverted F antenna, metal wire antenna, slot antenna, microstrip patch antenna, loop antenna, metal spiral antenna or LDS antenna.

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