CN106792743B - Wireless networking method based on gesture recognition - Google Patents

Abstract

The invention discloses a wireless networking method based on gesture recognition, which is realized by utilizing a wireless gateway with a gesture recognition function; the wireless gateway includes: the WiFi transceiver, the low-power consumption wireless transceiver and the indicator light are connected with the microprocessor; the WiFi transceiver is used for connecting to the WiFi router through a link and provides wireless radio frequency-based gesture recognition capability. When the wireless device triggers a wireless request data packet for joining the wireless gateway network and the wireless gateway receives the wireless request, the wireless device indicates that a new device requests to join through an indicator light; the human body determines whether the wireless device is a device that it desires to join the network, and if so, issues a permission gesture action, otherwise does not act or issues a denial action. According to the invention, through a gesture recognition mode, the wireless equipment is automatically added or refused to be added into a specific wireless network, and an installer can easily master networking pairing skills, so that the installation efficiency is greatly improved.

Description

A wireless networking method based on gesture recognition

technical field

The present invention relates to the technical field of wireless networking, and in particular, to a wireless networking method based on gesture recognition.

Background technique

Wireless sensor networks have broad application prospects in agriculture, military, civil and other fields. However, the wireless sensor network in practical application cannot exist in the form of an independent communication network. The data detected in the network needs to be sent to the upper-layer application server for analysis and processing, and the upper-layer application server also needs to send relevant commands to the sensor nodes in the wireless sensor network. This requires the wireless sensor network to realize the interconnection with different types of networks.

In wireless sensor networks, gateways play important roles such as protocol converters between networks, network routers of different network types, network data aggregation, storage processing, etc., and become an indispensable link between networks. However, in the prior art, the networking between the gateway and the wireless sensor usually requires button pairing or the configuration program of the PC/mobile device client. The networking is complicated, the networking efficiency is low, and it is prone to errors. Eavesdropping on the handshake information initiated by the network communication key.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a wireless network networking method that is convenient, efficient and safe for networking.

In order to achieve the above objects, the present invention adopts the following technical solutions.

A wireless networking method based on gesture recognition is characterized in that, it is realized by using a wireless gateway with gesture recognition function; the wireless gateway comprises: a microprocessor, a WiFi transceiver connected with the microprocessor, a low power consumption A wireless transceiver and an indicator light; the WiFi transceiver is used to connect to a WiFi router through a link, and provides gesture recognition capability based on radio frequency; the low-power wireless transceiver is used to connect low-power wireless devices; the The indicator light is used to indicate the current network status and the joining status of wireless devices; by default, the wireless gateway network is in a state where wireless devices are prohibited from joining; when the wireless device is powered on, it initializes and triggers a wireless request packet to join the wireless gateway network. , and when the wireless gateway receives this wireless request through its low-power transceiver, it will indicate through the indicator light that a new device requests to join; the human body judges whether the wireless device is the device it expects to join the network, and if so, sends out One allows gesture action, otherwise it does not act or sends out a rejection action; the gesture action of the human body is used to affect the RSSI and CSI signals received by the WiFi transceiver. After the signal is recognized by the microprocessor, it is converted into a control signal to allow or reject the wireless device. Network access request, avoiding the mistaken joining of unauthorized devices.

As an improvement, on the microprocessor, in addition to the WiFi transceiver that can also be used for gesture recognition, a special gesture recognition device is also connected, and the special gesture recognition device is: camera, radar, accelerometer, geomagnetometer or Gyroscope; the microprocessor allows or rejects the network access request of the wireless device according to the gestures of the human body recognized by the gesture recognition device.

As an improvement, the low-power wireless transceiver is: a Bluetooth module, a ZigBee module or a Thread module.

As an improvement, the wireless device is a wireless sensor, including one or more of a temperature sensor, a humidity sensor, an illuminance sensor, a pyroelectric sensor, a movement sensor, and a pressure sensor.

As an improvement, the wireless device is a wireless actuator, including one or more of smart lighting devices, smart air conditioners, smart fans, and smart TVs.

As an improvement, when the wireless device is allowed to access the network, the indicator light is turned off and the network is turned on to allow access to the network; when the wireless device is denied access to the network, the indicator light is turned off and a message is sent to the wireless device requesting network access to deny access to the network.

As an improvement, a series of different human gestures are defined in the microprocessor, and after being recognized by the microprocessor, different authorization levels and different network keys are formed when the wireless device accesses the network.

As an improvement, when the wireless device is allowed to access the network, the microprocessor determines whether the key selection and authorization level gestures are detected; if not, configure the network access device according to the default key and assign the default authorization level, and send it to the wireless device requesting network access. If there is, then carry out the following steps: 1) judge the key selection gesture, and select the corresponding key group and set the corresponding data bit according to the detected key selection gesture, and prepare to send to the wireless device applying for network access; 2 ) to determine whether there is an authorization level gesture, if so, set the corresponding authorization level data bit according to the detected authorization level gesture, and send the complete response byte, including the data bits of permission to join, key selection, and authorization level data The bit is sent to the wireless device applying for access to the network; if not, the data bits of permission to join and key selection are sent to the wireless device applying for access to the network.

The beneficial effects of the present invention are:

1. A wireless device with wireless connection capability can automatically join or refuse to join a specific wireless network by means of gesture recognition. When the wireless device is allowed to access the network, it has optional key selection and authorization level configuration capabilities. Users can bring new devices onto the network efficiently, quickly and error-free without the need for complicated button pairing or pc/mobile device client configuration procedures. Compared with complex key pairing sequences and dedicated networking setup software, installation workers can easily master networking pairing skills due to natural and easy-to-understand gestures, which greatly improves installation efficiency.

2. Configure the key selection and authorization level when the new device is connected to the network through gesture recognition, so as to avoid the wireless eavesdropping device from eavesdropping on the corresponding network key exchange initialization security and confidentiality information, which enhances the security and reliability. The traditional in-band wireless communication means configure the initialization information such as keys. As long as the eavesdropping device can monitor the whole process, there is always a chance to capture the data packets initiated by the network key exchange (such as the key selection data packets initiated by the device attempting to access the network). , greatly increasing the risk of being cracked.

3. It can be widely used in intelligent lighting, industrial wireless network, intelligent building and other fields that require higher security and ease of use.

Description of drawings

Fig. 1 shows the structural block diagram of the wireless gateway.

FIG. 2 is a flowchart of a wireless networking method.

Detailed ways

In order to facilitate those skilled in the art to better understand the essence of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

A wireless networking method based on gesture recognition is realized by using a wireless gateway with gesture recognition function.

As shown in FIG. 1, the wireless gateway 8 includes: a microprocessor 1, a memory 2 connected to the microprocessor 1, a memory card 3, a WiFi transceiver 4, a camera 5, a low power consumption (2.4Ghz or lower than 1GHz) ) wireless transceiver 6, indicator light 7, described microprocessor 1 and memory 2, memory card 3 form the smallest processor unit; described camera 5 is used for providing gesture recognition capability based on image sensor; described WiFi transceiver 4 It is used to connect to the WiFi router 10 through the link 9, and provides gesture recognition capability based on radio frequency; the low-power wireless transceiver 6 is used to connect low-power wireless devices, and the indicator light 7 is used to indicate the current Network status and joining status of wireless devices.

In this embodiment, the radio frequency-based gesture recognition capability refers to identifying and judging gestures based on the interference of human body dynamic gestures on the RSSI (signal strength) and CSI (wireless channel state information) of radio frequency such as WiFi, or based on the camera gesture recognition, they are all mature technologies, and will not be described in detail here.

The low-power wireless transceiver refers to a Bluetooth module, a ZigBee module, a Thread module, or any other proprietary low-power wireless protocol.

The wireless devices include but are not limited to: wireless sensors 21, 22, such as temperature sensors, humidity sensors, illuminance sensors, pyroelectric sensors, motion sensors, etc.; wireless actuators 31, such as smart lighting equipment, smart air conditioners, smart fans , smart TVs, smart home devices, etc.

In other implementations, according to the specific model of the microprocessor, the internal memory and the memory card may be omitted. The camera can be replaced by different sensors such as radar, accelerometer, geomagnetic meter, gyroscope, etc., as long as it can recognize human gestures.

As shown in FIG. 2 , the network of the wireless gateway 8 is usually in a closed state (devices are prohibited from joining). After the wireless devices 21 , 22 and 23 are powered on and initialized, the wireless request data packets 211 , 221 and 311 for joining the network of the wireless gateway 8 are automatically or artificially triggered. When the wireless gateway 8 receives the wireless request through the low-power transceiver 6 to which it belongs, it will indicate through the indicator light 7 that a new device requests to join. The human body 41 judges whether the wireless device is the device it wants to join the network through the human-computer interaction device connected to the wireless gateway, and if so, issues an allow gesture action, otherwise does not act or issues a reject action. The gestures of the human body 41 are used to affect the image data formed by the camera 5, or the RSSI (signal strength) and CSI (wireless channel status information) signals received by the WiFi transceiver 4 are converted into control signals after being recognized by the microprocessor 1 , allowing or denying the network access request of the wireless devices 21 , 22 and 23 , avoiding the wrong joining of unauthorized devices. When the wireless device is allowed to access the network, turn off the indicator light 7 and turn on the network to allow access to the network. When the wireless device is refused to access the network, the indicator light 7 is turned off and a message is sent to the wireless device requesting to access the network, and the network is refused.

In addition, a series of different human gestures can be defined, and after being recognized by the microprocessor 1, different authorization levels and different network keys are formed when the wireless device accesses the network. After allowing the wireless device to access the network, the microprocessor 1 determines whether the WiFi transceiver 4 or the camera 5 detects the key selection and authorization level gestures; if not, configure the network access device according to the default key and assign the default authorization level, and send to wireless devices requesting access to the network. If yes, then perform the following steps: 1) Judging the key selection gesture, and according to the detected key selection gesture, select the corresponding key group and set the corresponding data bits, and prepare to send to the wireless device applying for network access; 2) Judgment Whether there is an authorization level gesture, if so, set the corresponding authorization level data bit according to the detected authorization level gesture, and send the complete response byte, including the data bit of permission to join, key selection, and data bit of authorization level It is sent to the wireless device applying for network access; if not, the data bits of permission to join and key selection are sent to the wireless device applying for network access.

Specifically, whether using the camera principle or the principle that the RSSI and CSI parameters of the WiFi transceiver are interfered by the human body, the detected gestures need to be divided into the following groups: (For example only, the encoding method and gesture function can be further expanded, as long as the gesture The detection accuracy can satisfy more complex gesture combinations, not limited to this embodiment)

1) Network access permission: The permission to join and the refusal to join are coded as 1 and 0 respectively.

2) Key selection: the keys are divided into key 1 (default value), key 2, key 3 and key 4, which are encoded as 00, 01, 10, and 11 respectively.

3) Authorization level selection: The authorization level is divided into dormant equipment (default value), routing and forwarding equipment (no dormancy), and network control equipment (no dormancy, high security level), which are coded as 00, 01, 10, and 11 respectively.

In actual work, only one byte (in fact, only 5 bits) is needed to meet the resolution requirements.

A byte includes eight binary bits, and the number of bits is shown in Table 1.

Table 1

D7 D6 D5 D4 D3 D2 D1 D0

D7-D5 bits: reserved bits.

D4 bit: 0 = refusal to join; 1 = allowed to join; the default value is 0, refusal to join.

D3-D2 bits: 00=Key 1, 01=Key 2, 02=Key 3, 03=Key 4, the default value is 00.

D1-D0 bits: 00 = dormant device, 01 = routing forwarding device, 02 = network control device, 03 = reserved, the default value is 00.

Therefore, 1) when receiving the network access request (join request) from the wireless device 21, if the user does not respond with any gesture, or the user makes a response of refusing access to the network, the wireless gateway 8 will send the wireless gateway 8 through the low-power wireless transceiver 6. A rejection message (0x00, that is, binary 0b00010000) is sent to the wireless device 21, indicating that its network access request has been rejected.

2) When receiving the network access request (join request) of the wireless device 21, if the user makes a gesture of allowing network access, the wireless gateway 8 will send a network access message to the device 21 through the low-power wireless transceiver 6, And carry the parameter (0x10, that is, the binary 0b00010000), indicating that the network is allowed, the key is 1, and the sleep device is. After that, the wireless device 21 will select the internal preset key 1 to encrypt all communication information with the wireless gateway 8 and other devices in the network, and turn on the built-in sleep timer, and sleep regularly to save power (this situation is generally applicable to sensors. equipment).

3) When receiving the network access request (join request) of the wireless device 22, if the user makes a set of gestures, including the gesture of allowing access to the network, and the subsequent key 2 gestures and routing forwarding device gestures, the wireless gateway 8 will A network access packet is sent to the wireless device 22 through the low-power wireless transceiver 6, and carries the parameter (0x15, that is, 0b00010101 in binary), indicating that the network access is allowed, the key 2, and the routing forwarding device. After that, the wireless device 22 will select the internally preset secret key 2 to encrypt all communication information with the wireless gateway 8 and other devices in the network, and close the built-in sleep timer, prohibit timed sleep and enable the routing and forwarding function (this is generally the case. Suitable for load equipment such as air conditioning, ventilation, lighting, etc.).

The above specific embodiments describe the essence of the present invention in detail, but do not limit the protection scope of the present invention. Obviously, under the inspiration of the essence of the present invention, those of ordinary skill in the art can make many improvements and modifications. It should be noted that these improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims (6)

1. a wireless networking method based on gesture recognition, is characterized in that, it utilizes the wireless gateway with gesture recognition function to realize; Described wireless gateway comprises: microprocessor, the WiFi transceiver that is connected with microprocessor, low Power consumption wireless transceiver and indicator light; the WiFi transceiver is used for connecting to a WiFi router through a link, and provides gesture recognition capability based on radio frequency; the low-power wireless transceiver is used for connecting low-power wireless devices; The indicator light is used to indicate the current network state and the joining state of the wireless device; By default, the network of the wireless gateway is in a state where wireless devices are prohibited from joining; When the wireless device is powered on and initialized and triggers the wireless request data packet to join the wireless gateway network, and the wireless gateway receives the wireless request through its low-power transceiver, it will indicate through the indicator light that a new device requests to join; The human body judges whether the wireless device is a device that it expects to join the network, and if so, issues an allow gesture action, otherwise does not act or issues a reject action; The gestures of the human body are used to affect the RSSI and CSI signals received by the WiFi transceiver. After being recognized by the microprocessor, the signals are converted into control signals, allowing or rejecting the network access request of the wireless device, avoiding the mistaken joining of unauthorized devices; A series of different human gestures are defined in the microprocessor, and after being recognized by the microprocessor, different authorization levels and different network keys are formed when the wireless device accesses the network; When the wireless device is allowed to access the network, the microprocessor determines whether the key selection and authorization level gestures are detected; If not, configure the network access device according to the default key and give the default authorization level, and send it to the wireless device requesting network access; If yes, perform the following steps: 1) Determine the key selection gesture, select the corresponding key group and set the corresponding data bits according to the detected key selection gesture, and prepare to send it to the wireless device applying for network access; 2) Determine Whether there is an authorization level gesture, if so, set the corresponding authorization level data bit according to the detected authorization level gesture, and send the complete response byte, including the data bit of permission to join, key selection, and data bit of authorization level It is sent to the wireless device applying for network access; if not, the data bits of permission to join and key selection are sent to the wireless device applying for network access. 2. a kind of wireless networking method based on gesture recognition according to claim 1, is characterized in that, in addition to the WiFi transceiver that can double as gesture recognition purpose, also be connected with special gesture recognition equipment on the microprocessor, The gesture recognition device is: a camera, a radar, an accelerometer, a geomagnetic meter or a gyroscope; the microprocessor allows or rejects the network access request of the wireless device according to the gestures of the human body recognized by the gesture recognition device. 3 . The method for wireless networking based on gesture recognition according to claim 1 , wherein the low-power wireless transceiver is a Bluetooth module, a ZigBee module or a Thread module. 4 . 4. The method for wireless networking based on gesture recognition according to claim 1, wherein the wireless device is a wireless sensor, comprising: a temperature sensor, a humidity sensor, an illuminance sensor, a pyroelectric sensor, a mobile sensor one or more of a pressure sensor and a pressure sensor. 5 . The method for wireless networking based on gesture recognition according to claim 1 , wherein the wireless device is a wireless executive mechanism, comprising: a smart lighting device, a smart air conditioner, a smart fan, and a smart TV. 6 . species or several. 6. a kind of wireless networking method based on gesture recognition according to claim 1 is characterized in that, when allowing the wireless device to access the network, turn off the indicator light to turn on the network to allow the network access; when rejecting the wireless device to access the network, turn off the indicator light and Send a message to the wireless device requesting access to the network and deny access to the network.

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