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CN-122028127-A - Intelligent dual-mode intercom system and method with environment cognition pre-scheduling and signaling isolation

CN122028127ACN 122028127 ACN122028127 ACN 122028127ACN-122028127-A

Abstract

The invention relates to the technical field of wireless communication networks, and discloses an intelligent dual-mode intercom system and method for environment cognition pre-scheduling and signaling isolation, wherein the intelligent dual-mode intercom system comprises the steps of mapping mobile state data into a position vector of a space topology model; the method comprises the steps of calculating an extension path according to the vector, judging an intersecting state by combining a signal attenuation unit, sending a pre-awakening instruction to a radio frequency subsystem when the extension path cuts into a high attenuation area, packaging a key signal into a logic instruction which has priority and is independent of a media protocol, selecting a matching protocol to send the instruction to the radio frequency subsystem, and controlling a communication link to be redirected from a public network protocol stack to the radio frequency link.

Inventors

  • WANG SHAOFENG
  • CHEN TIANBAO

Assignees

  • 福建宝锋电子有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The intelligent dual-mode intercom method for the environment cognition pre-scheduling and signaling isolation is characterized by comprising the following steps of: Step S1, obtaining movement state data, mapping the movement state data into a spatial position vector in a preset environmental spatial topological model, wherein the environmental spatial topological model is recorded with signal attenuation units representing a physical shielding structure, and each signal attenuation unit is associated with a preset electromagnetic attenuation weight; Step S2, calculating an extension path according to the spatial position vector, executing intersection judgment of the extension path and the signal attenuation unit, and transmitting a pre-awakening instruction to the radio frequency control subsystem before the extension path enters the coverage area of the signal attenuation unit and the signal strength of the wireless link drops to a preset switching threshold value, so as to control the radio frequency control subsystem to execute hardware link initialization; Step S3, monitoring a trigger signal of a physical key, and packaging the trigger signal into a logic control instruction containing a service priority label, wherein the logic control instruction is transmitted through a channel transmission path independent of a media resource control protocol, and the channel transmission path is physically isolated from a media stream path of an external audio service; and S4, selecting a matching protocol according to a preset protocol set, and sending a logic control instruction to the radio frequency control subsystem through a channel transmission path to control the communication link to be redirected from the public network intercom protocol stack to the radio frequency intercom link.
  2. 2. The intelligent dual-mode intercom method for environment cognition pre-scheduling and signaling isolation according to claim 1 is characterized in that the acquisition process of the space position vector in the step S1 comprises the steps of acquiring gait characteristic data through an embedded sensor, converting the gait characteristic data into displacement increment under an environment space topological model coordinate system by utilizing a coordinate conversion algorithm, accumulating the displacement increment and initial space coordinates to generate the space position vector, wherein the signal attenuation unit comprises a concrete shielding body, a subsurface space entrance and a metal closed space characteristic.
  3. 3. The intelligent dual-mode intercom method based on the environment-aware pre-scheduling and signaling isolation according to claim 1, wherein step S2 specifically comprises the steps of obtaining a received signal strength indication of a current wireless channel, triggering a pre-wake-up instruction when the received signal strength indication is lower than a preset smooth threshold value and an intersection judgment result is that the received signal strength indication enters a coverage area of a signal attenuation unit, and driving a radio frequency control subsystem to execute phase-locked loop oscillation starting and carrier frequency locking actions.
  4. 4. The intelligent dual-mode intercom method for environment-aware pre-scheduling and signaling isolation according to claim 1 is characterized in that the encapsulation process of the logic control instruction in step S3 comprises the steps of identifying the triggering type of a physical key, and converting the key action into a logic data packet of a non-competitive path when the triggering type is a push-to-talk request, wherein the logic data packet comprises a device authentication sequence and an instruction feature code.
  5. 5. The intelligent dual-mode intercom method based on the environment-aware pre-scheduling and signaling isolation according to claim 1, wherein step S4 specifically comprises the steps of monitoring a wireless communication link state between a mobile terminal and intelligent dual-mode equipment, executing a fault fallback strategy based on key attributes when the heartbeat signal loss of the wireless communication link is monitored, and redirecting a routing end point of a logic control instruction to a radio-frequency intercom link.
  6. 6. The intelligent dual-mode intercom method of environmental awareness pre-scheduling and signaling isolation as claimed in claim 5, wherein the fault fallback strategy is based on link reliability weights Determining link reliability weights Calculated by the following formula: , wherein, As the actual measured value of the received signal strength of the current wireless channel, For the absolute value thereof, For the geometric distance from the space position vector to the nearest signal attenuation unit, alpha is the electromagnetic attenuation weight of the signal attenuation unit, when And when the stability is lower than a preset stability threshold, the control path is forcedly switched from the Bluetooth protocol stack to the hardware bus interface.
  7. 7. The intelligent dual-mode intercom method of environment-aware pre-scheduling and signaling isolation according to claim 1, wherein a deterministic transmission guarantee mechanism is arranged on a channel transmission path, the deterministic transmission guarantee mechanism comprises starting a timer when a logic control command is sent, and if a feedback acknowledgement frame is not received within a 20ms to 50ms response window, executing a retransmission mechanism until the feedback acknowledgement frame is received or a preset maximum retry number is reached.
  8. 8. The intelligent dual-mode intercom method for environment-aware pre-scheduling and signaling isolation according to claim 1, wherein the protocol set comprises a low-power-consumption Bluetooth protocol, a classical Bluetooth serial port protocol and a wireless private protocol, and the selecting process of the matching protocol in the step S4 comprises dynamically selecting a protocol with high-priority response characteristics from the protocol set as the matching protocol according to the access response information of the mobile terminal.
  9. 9. The intelligent dual-mode intercom method based on the environment cognition pre-scheduling and signaling isolation according to claim 1, further comprising the steps of pre-establishing a logic link between a radio frequency control subsystem and an audio processing unit after the pre-wakeup command is sent, circularly caching 500ms voice data before the communication link is redirected, compensating voice frame loss in a channel switching process, monitoring electromagnetic interference base noise of a frequency band where the intelligent dual-mode device is located in real time, and improving the transmitting power of the logic control command in a channel transmission path when the electromagnetic interference base noise exceeds a preset interference threshold.
  10. 10. The intelligent dual-mode intercom system with the environment cognition pre-scheduling and signaling isolation is characterized in that the intelligent dual-mode equipment is used for realizing the intelligent dual-mode intercom method with the environment cognition pre-scheduling and signaling isolation as set forth in claim 1.

Description

Intelligent dual-mode intercom system and method with environment cognition pre-scheduling and signaling isolation Technical Field The invention belongs to the technical field of wireless communication networks, and particularly relates to an intelligent dual-mode intercom system and method for environment cognition pre-scheduling and signaling isolation. Background In the heterogeneous network environment, when equipment enters an electromagnetic shielding area or moves, the physical state of a Bluetooth link is degraded, the prior art generally depends on a logic disconnection signal reported by a bottom protocol stack to trigger communication mode switching, and because a protocol stack design of an operating system of the mobile terminal is generally reserved with a timeout confirmation window, a time sequence deviation exists between a link interrupt signal perceived by the system and a real physical channel collapse. Aiming at the switching hysteresis, the conventional method shortens the period of a link monitoring pulse, but this causes nonlinear increase of the power consumption of a mobile terminal, and the initialization delay generated by the process of starting the phase-locked loop of the hardware of a radio frequency transceiver unit and locking the frequency cannot be avoided, and the software protocol response hysteresis and the physical time consumption of the hardware start are overlapped, so that the voice stream is intermittent during the cross-domain switching of a communication mode, for example, the Chinese patent application with publication number CN117641495A discloses a method and a device for switching the system of intercom equipment. Therefore, how to realize state sensing and hardware pre-starting in the heterogeneous communication link switching process so as to eliminate the switching time sequence fault and improve the compatibility of control instructions becomes the technical problem to be solved by the invention. Disclosure of Invention The invention provides an intelligent dual-mode intercom method for environment cognition pre-scheduling and signaling isolation, which comprises the following steps: Step S1, obtaining movement state data, mapping the movement state data into a spatial position vector in a preset environmental spatial topological model, wherein the environmental spatial topological model is recorded with signal attenuation units representing a physical shielding structure, and each signal attenuation unit is associated with a preset electromagnetic attenuation weight; Step S2, calculating an extension path according to the spatial position vector, executing intersection judgment of the extension path and the signal attenuation unit, and transmitting a pre-awakening instruction to the radio frequency control subsystem before the extension path enters the coverage area of the signal attenuation unit and the signal strength of the wireless link drops to a preset switching threshold value, so as to control the radio frequency control subsystem to execute hardware link initialization; Step S3, monitoring a trigger signal of a physical key, and packaging the trigger signal into a logic control instruction containing a service priority label, wherein the logic control instruction is transmitted through a channel transmission path independent of a media resource control protocol, and the channel transmission path is physically isolated from a media stream path of an external audio service; and S4, selecting a matching protocol according to a preset protocol set, and sending a logic control instruction to the radio frequency control subsystem through a channel transmission path to control the communication link to be redirected from the public network intercom protocol stack to the radio frequency intercom link. Preferably, the process of acquiring the space position vector in the step S1 comprises the steps of acquiring gait feature data through an embedded sensor, converting the gait feature data into displacement increment under an environment space topological model coordinate system by utilizing a coordinate conversion algorithm, accumulating the displacement increment and an initial space coordinate to generate the space position vector, wherein the signal attenuation unit comprises a concrete shielding body, a subsurface space inlet and a metal closed space feature. Preferably, the step S2 specifically includes obtaining a received signal strength indication of a current wireless channel, triggering a pre-wake-up instruction when the received signal strength indication is lower than a preset smoothing threshold and the intersection judgment result is that the received signal strength indication enters a coverage area of a signal attenuation unit, and driving a radio frequency control subsystem to execute phase-locked loop oscillation starting and carrier frequency locking actions. Preferably, the packaging process of the logic control instruction in step