Disabled person guiding device based on microwave radar

Abstract

The utility model discloses a handicapped person guiding device based on a microwave radar. The handicapped person guiding device comprises a blind guiding stick, an installation shell installed on the blind guiding stick and the microwave radar installed in the installation shell. The microwave radar comprises an MCU module, a radio frequency module, a signal processing module, a power supply module and an antenna modulation module. The signal processing module and the power supply module are both connected with the MCU module; the antenna modulation module is connected with the radio frequency module; the radio frequency module comprises a radio frequency processing unit, a transmitting antenna and a receiving antenna, wherein the transmitting antenna and the receiving antenna are connected with the radio frequency processing unit. According to the utility model, the microwave radar is integrated on the blind guiding stick, so that the disabled can be assisted to detect obstacles based on the microwave radar, corresponding warning is given out, the travel safety and convenience of the disabled can be further improved, and the practicability is strong.

Description

TECHNICAL FIELD

[0001] The utility model relates to a microwave radar technical field especially relates to a kind of based on microwave radar's disabled person guiding device. BACKGROUND

[0002] With the development of auxiliary equipment technology, the travel safety and convenience of disabled persons have been gradually improved. However, the traditional auxiliary tools (such as guide stick, guide dog, etc.) still have great limitations in dealing with complex environment. The guide stick mainly senses by touching obstacles, which can only identify low obstacles in close range and cannot deal with high or dynamic targets. The guide dog has a long training period and high cost, which cannot meet the demand of large-scale use. SUMMARY

[0003] The utility model aims at providing a kind of based on microwave radar's disabled person guiding device, the utility model is integrated on guide stick by microwave radar, to assist disabled persons to detect obstacles based on microwave radar, and corresponding warning can be issued, which can further improve the travel safety and convenience of disabled persons and has strong practicability.

[0004] To achieve the above-mentioned purpose, the following technical solutions are adopted:

[0005] A kind of based on microwave radar's disabled person guiding device, including guide stick, installation shell installed on guide stick, and microwave radar installed in installation shell;The microwave radar includes MCU module, radio frequency module, signal processing module, power supply module and antenna modulation module;The signal processing module and power supply module are connected with MCU module;The antenna modulation module is connected with radio frequency module;The radio frequency module includes radio frequency processing unit, and transmitting antenna and receiving antenna connected with radio frequency processing unit;The radio frequency processing unit is connected with signal processing module;Vibration module connected with MCU module is also installed in the installation shell.

[0006] Further, the signal processing module includes two signal filter amplification units, one of which is used for processing IFI signal, and the other is used for processing IFQ signal.

[0007] Further, each signal filter amplification unit includes signal filter unit and signal amplification unit connected with signal filter unit;The signal filter unit is connected with radio frequency processing unit, and signal amplification unit is connected with MCU module.

[0008] Further, the installation shell is also installed with voice prompt module connected with MCU module.

[0009] Further, the installation shell is further provided with a detection configuration interface connected with the MCU module.

[0010] Further, the installation shell is further provided with a charging interface connected with the power supply module.

[0011] Further, the vibration module comprises a direct current vibrator.

[0012] Further, the installation shell comprises a front shell and a rear shell connected with the front shell; an inner wall of the rear shell is provided with a wiring hole penetrating into the front shell; opposite sides of the front shell and the rear shell are both provided with a first recess in a semicircular structure, and an installation hole is surrounded by the two first recesses; and the installation shell is installed on the blind walking stick through the installation hole.

[0013] Further, one side of the inner wall of the front shell is connected with a fixing block, and a first clamping groove in a semicircular structure is formed on one side of the fixing block; the direct current vibrator is clamped in the first clamping groove; and a clamping clamp in a semicircular structure is further arranged in the front shell, and the clamping clamp limits and fixes the direct current vibrator on the fixing block.

[0014] Further, a connecting block is further installed on one side of the inner wall of the front shell, and a support is further connected with one side of the connecting block; the support is in a T-shaped structure, and a T-shaped vertical end of the support is connected with the connecting block; the MCU module, the radio frequency module, the signal processing module and the antenna modulation module are installed on a T-shaped horizontal end of the support.

[0015] By adopting the above scheme, the beneficial effects of the utility model are as follows:

[0016] The utility model discloses a microwave radar is integrated on the blind walking stick, and the microwave radar is used for assisting the disabled to detect obstacles and sending corresponding warning, which can further improve the travel safety and convenience of the disabled and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the principle diagram of the utility model;

[0018] Figure 2 It is the structure schematic view of the utility model;

[0019] Figure 3 It is the structure schematic view of the microwave radar of the utility model;

[0020] Figure 4 It is Figure 3 It is the structure schematic view of the utility model of part of side plate;

[0021] Figure 5 It is Figure 3 It is the structure schematic view of another view of the utility model of part of side plate;

[0022] Figure 6 Circuit diagram of the signal processing module of the utility model;

[0023] Figure 7 Circuit diagram of the antenna modulation module of the utility model;

[0024] Figure 8 Principle schematic diagram of the radio frequency module of the utility model;

[0025] Among them, the drawing mark explanation:

[0026] 1, blind guiding stick; 2, power supply module; 3, direct current vibrator; 4, front shell; 5, rear shell; 6, voice prompt module; 7, detection configuration interface; 8, charging interface; 41, fixed block; 42, clamping clamp; 43, connecting block; 44, support; 45, mounting hole. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in combination with the drawings and specific embodiments.

[0028] Referring to Figures 1 to 8 The utility model provides a kind of handicapped person guiding device based on microwave radar, and in an embodiment, including blind guiding stick 1, installation shell body installed on blind guiding stick 1 and microwave radar installed in installation shell body;The microwave radar includes MCU module, radio frequency module, signal processing module, power supply module 2 and antenna modulation module;The signal processing module and power supply module 2 are connected with MCU module;The antenna modulation module is connected with radio frequency module;The radio frequency module includes radio frequency processing unit, and transmitting antenna and receiving antenna connected with radio frequency processing unit;The radio frequency processing unit is connected with signal processing module;Vibration module connected with MCU module is also installed in the installation shell body.

[0029] In the embodiment, microwave radar works in ISM wave band (24.0~24.25GHz), simultaneously, the signal processing module includes two signal filter amplification units, one of the signal filter amplification units is used to process IFI signal, and another signal filter amplification unit is used to process IFQ signal;Each signal filter amplification unit includes signal filter unit and signal amplification unit connected with signal filter unit;The signal filter unit is connected with radio frequency processing unit, and signal amplification unit is connected with MCU module.In addition, as shown in Figure 8As shown, the radio frequency processing unit includes a voltage-controlled oscillator, a first power divider, a second power divider, a 90° phase shifter, a first mixer, a second mixer, a power amplifier, and a low-noise amplifier; an input end of the first power divider is connected with the voltage-controlled oscillator, a first output end of the first power divider is connected with a transmitting antenna, and a second output end of the first power divider is connected with an input end of the second power divider; a first output end of the second power divider is connected with a first input end of the first mixer, and a second output end of the second power divider is connected with an input end of the 90° phase shifter; a second input end of the first mixer is connected with a first output end of the power amplifier; a first input end of the second mixer is connected with an output end of the 90° phase shifter, and a second input end of the second mixer is connected with a second output end of the power amplifier; an input end of the power amplifier is connected with an output end of the low-noise amplifier, and an input end of the low-noise amplifier is connected with a receiving antenna.

[0030] The output end of the first mixer is used for outputting an IFI signal, and the output end of the second mixer is used for outputting an IFQ signal. When the device is used by the disabled, especially the blind, the voltage-controlled oscillator generates a detection signal with a certain bandwidth according to a modulation signal (the antenna modulation module controls the transmitting frequency of the radar at certain time intervals), which is transmitted to the transmitting antenna through the first power divider, and then is radiated to the area to be detected. If there is an obstacle in the area to be detected, the signal reflected by the obstacle is converted into a high-frequency electric signal by the receiving antenna, is amplified by the low-noise amplifier, is transmitted to the second power divider, is distributed to the first mixer and the second mixer by the second power divider, and is mixed with the detection signal before being transmitted by the transmitting antenna by the first mixer and the second mixer to obtain intermediate frequency signals (IFI signal and IFQ signal). Then, a part of the low-frequency part in the intermediate frequency signal is filtered out (the intermediate frequency signal contains low-frequency noise signals and low-frequency signals not reflected by the target, so as to reduce the modulation leakage problem caused by mixing), and then the filtered signal is amplified by the signal amplification unit and is transmitted to the MCU module. The MCU module is built-in with an audio A / D conversion unit, can convert the signal into a digital signal, and then can extract distance information, speed information and direction information of the obstacle from the digital signal, so as to realize positioning detection of the obstacle. In the embodiment, the installation housing is also installed with a voice prompt module 6 connected with the MCU module.

[0031] After detecting the obstacle, the voice prompt module 6 can issue a warning language such as "there is an obstacle in front of you", so as to help the disabled more accurately judge the direction of the obstacle and improve the safety of travel. Meanwhile, the installation housing is also installed with a vibration module connected with the MCU module, which can provide vibration feedback to remind the disabled after detecting the obstacle.

[0032] In an embodiment, the installation shell is further provided with a detection configuration interface 7 connected with the MCU module, and a user can configure the detection range, the motion object early warning speed, distance information and the like through the configuration interface.

[0033] In an embodiment, the vibration module comprises a direct current vibrator 3, the installation shell comprises a front shell 4 and a rear shell 5 connected with the front shell 4, the inner wall of the rear shell 5 is provided with a wiring hole penetrating into the front shell 4, the opposite side of the front shell 4 and the rear shell 5 is provided with a first recess in a semicircular structure, and an installation hole 45 is surrounded between the two first recesses, the installation shell is installed on the blind walking stick 1 through the installation hole 45, the MCU module, the radio frequency module, the signal processing module and the antenna modulation module are installed in the front shell 4, the power supply module 2 is installed in the rear shell 5, and the wiring hole is arranged to facilitate wiring.

[0034] Meanwhile, one side of the front shell 4 is connected with a fixing block 41, one side of the fixing block 41 is provided with a first clamping groove in a semicircular structure, the direct current vibrator 3 is clamped in the first clamping groove, the front shell 4 is further provided with a clamping clamp 42 in a semicircular structure, and the clamping clamp 42 limits and fixes the direct current vibrator 3 on the fixing block 41. The clamping clamp 42 is in a semicircular structure, two ends of the clamping clamp 42 are respectively connected with a fixing piece, a fixing hole is arranged on the fixing piece, a screw is locked in the fixing hole after the clamping clamp 42 is clamped on the direct current vibrator 3 to lock and fix it, meanwhile, one side of the front shell 4 is further provided with a connecting block 43, one side of the connecting block 43 is further connected with a support 44, the support 44 is in a T-shaped structure, the T-shaped vertical end of the support 44 is connected with the connecting block 43, and the MCU module, the radio frequency module, the signal processing module and the antenna modulation module are installed on the T-shaped horizontal end of the support 44.

[0035] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A microwave radar-based handicapped person guiding device, characterized in that The application relates to a blind guiding stick, a mounting shell mounted on the blind guiding stick, and a microwave radar mounted in the mounting shell; the microwave radar comprises an MCU module, a radio frequency module, a signal processing module, a power supply module and an antenna modulation module; the signal processing module and the power supply module are connected with the MCU module; the antenna modulation module is connected with the radio frequency module; the radio frequency module comprises a radio frequency processing unit, and a transmitting antenna and a receiving antenna connected with the radio frequency processing unit; the radio frequency processing unit is connected with the signal processing module; a vibration module connected with the MCU module is further mounted in the mounting shell.

2. The microwave radar-based handicapped person guiding device according to claim 1, characterized in that The signal processing module comprises two signal filter amplification units, one of which is used for processing IFI signals, and the other is used for processing IFQ signals.

3. The microwave radar-based handicapped person guiding device according to claim 2, characterized in that Each signal filter amplification unit comprises a signal filter unit and a signal amplification unit connected with the signal filter unit; the signal filter unit is connected with the radio frequency processing unit, and the signal amplification unit is connected with the MCU module.

4. The microwave radar-based handicapped person guiding apparatus according to claim 1, characterized by A voice prompting module connected with the MCU module is further mounted in the mounting shell.

5. The microwave radar-based handicapped person guiding device according to claim 1, characterized in that A detection configuration interface connected with the MCU module is further mounted on the mounting shell.

6. The microwave radar-based handicapped person guiding device according to claim 1, characterized in that A charging interface connected with the power supply module is further mounted on the mounting shell.

7. The microwave radar-based handicapped person guiding device according to claim 1, characterized in that The vibration module comprises a direct current vibrator.

8. The microwave radar-based handicapped person guiding device according to claim 7, characterized in that The mounting shell comprises a front shell and a rear shell connected with the front shell; an inner wall of the rear shell is provided with a wiring hole penetrating into the front shell; opposite sides of the front shell and the rear shell are provided with first recesses in semicircular structures, and an installation hole is formed between the two first recesses; the mounting shell is mounted on the blind guiding stick through the installation hole.

9. The microwave radar-based handicapped person guiding device according to claim 8, characterized in that One side of the inner wall of the front shell is connected with a fixing block, and a first clamping groove in a semicircular structure is formed on one side of the fixing block; the direct current vibrator is clamped in the first clamping groove; a clamping clamp in a semicircular structure is further arranged in the front shell, and the clamping clamp limits and fixes the direct current vibrator on the fixing block.

10. The microwave radar-based handicapped person guiding device according to claim 9, characterized in that A connecting block is further mounted on one side of the inner wall of the front shell, and a support is further connected with one side of the connecting block; the support is in a T-shaped structure, and a T-shaped vertical end of the support is connected with the connecting block; the MCU module, the radio frequency module, the signal processing module and the antenna modulation module are mounted on a T-shaped horizontal end of the support.

Images