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Method and device for measuring distance by multiple wireless sensing signals and intelligent equipment

A technology of sensing signals and smart devices, applied in methods and smart devices, using multiple wireless sensing signals for distance measurement, can solve the problem of low scanning frequency of wireless sensing signals, and achieve the effect of improving the degree of anti-interference

Inactive Publication Date: 2019-08-27
BEIJING ORION STAR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is a need for a multi-wireless sensor signal ranging solution to solve the problem of low scanning frequency of wireless sensor signals like ultrasonic waves

Method used

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  • Method and device for measuring distance by multiple wireless sensing signals and intelligent equipment
  • Method and device for measuring distance by multiple wireless sensing signals and intelligent equipment
  • Method and device for measuring distance by multiple wireless sensing signals and intelligent equipment

Examples

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Embodiment 1

[0069] An embodiment of the present invention provides a method for measuring distance using multiple wireless sensor signals, which is applied to a smart device. The smart device includes a plurality of wireless sensors, and the processor of the smart device cooperates with a plurality of wireless sensors to achieve distance measurement. The above method executed by the processor, such as figure 1 As shown, the method includes:

[0070] Step 101, sending a first signal to each wireless sensor, so that the wireless sensor uses a corresponding modulation signal to modulate the above first signal and then convert it into a wireless sensing signal, and transmit the above wireless sensing signal;

[0071] The aforementioned wireless sensor may be, but not limited to, an ultrasonic sensor, an infrared sensor, or a laser sensor, and the aforementioned wireless sensing signal corresponds to an ultrasonic signal, an infrared signal, or a laser signal.

[0072] Each of the above-menti...

example 1

[0098] Example 1, after the original voltage pulse signal of the same waveform is modulated by the modulation signal, the sequence codes corresponding to different voltage pulse waveform signals have different values ​​of the sequence codes at the same time position;

[0099] Such as figure 2 As shown, the time length t0 of the ranging cycle sends the first signal to each wireless sensor during the scanning period of the ranging cycle, and each wireless sensor uses a different modulation signal to modulate the first signal, so that the modulated transmission signal can be have different waveforms. For example, if the first signal is 111111, the sequence code 101001 is obtained after the NOR operation is performed with the modulation signal 010110, and the sequence code 100111 is obtained after the NOR operation is performed with the modulation signal 011000.

[0100] Correspondingly, if after receiving 101001 obtained by converting the wireless sensing signal, the demodulati...

example 2

[0102] Example 2, different voltage pulse waveform signals are waveform signals with the same voltage pulse duration and different voltage pulse waveform shapes.

[0103] Such as image 3 As shown, the time length t0 of the ranging cycle sends the first signal to each wireless sensor during the scanning period of the ranging cycle, and each wireless sensor uses a different modulation signal to modulate the first signal, so that the modulated transmission signal can be There are different types of waveforms. For example, after the transmitting signal is modulated by a triangular wave or a rectangular wave respectively, different types of waveforms of the transmitting signal can be obtained.

[0104] When the reflected signal is received, demodulate the reflected signal by using the demodulation signal corresponding to each wireless sensor, and judge whether the correct reflected signal is received according to whether the demodulated signal is consistent with the pre-modulated...

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Abstract

The invention discloses a method and device for measuring distance by multiple wireless sensing signals and intelligent equipment. The method comprises the steps of sending a first signal to each wireless sensor so that a first signal is modulated by each wireless sensor according to a corresponding modulation signal and then is converted to a wireless sensing signal and the wireless sensing signal is emitted; receiving a second signal fed back by an arbitrary wireless sensor, wherein the second signal is a signal by demodulation of a corresponding demodulation signal after the wireless sensing signal received by the wireless sensor and reflected by an obstacle is converted; and determining difference between sending time of the first signal and sending time of the second signal when the second signal is consistent with the first signal, and determining distance between the wireless sensor and the obstacle. By the method, the interference resistance of a plurality of wireless sensors is improved, and the scanning frequencies of the multiple wireless sensors are supported and improved for distance measurement.

Description

technical field [0001] The invention relates to the technical field of wireless sensor distance measurement, in particular to a method and device for distance measurement using multiple wireless sensor signals and an intelligent device. Background technique [0002] Ultrasound is a sound wave beyond the limit of human hearing, that is, a mechanical wave with a vibration frequency higher than 20kHz. The working process of the ultrasonic sensor is the mutual conversion process between voltage and ultrasonic waves. When the ultrasonic sensor emits ultrasonic waves, the probe that emits ultrasonic waves emits the ultrasonic waves converted from voltage. When the ultrasonic sensor receives ultrasonic waves, the probe that receives ultrasonic waves converts the ultrasonic waves. The voltage is fed back to the microcontroller chip. Ultrasound has the advantages of high vibration frequency, short wavelength, small diffraction phenomenon and good directionality, and can also be dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16G01S5/18
CPCG01S5/16G01S5/18
Inventor 雷林涛
Owner BEIJING ORION STAR TECH CO LTD
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