Intelligent height measuring method, system and device based on millimeter wave radar technology

Abstract

The invention relates to the field of health detection, and discloses an intelligent height measurement method, system and device based on a millimeter wave radar technology, and the method comprises the steps: S1, adjusting the levelness of the device, detecting the position of a measurement target through a millimeter wave radar, carrying out the height measurement, collecting measurement data, and transmitting the measurement data to a master controller; s2, the main controller processes the measurement data, calculates the height of a measurement target, generates a measurement result and sends the measurement result to a display screen and a loudspeaker; and S3, the display screen renders the measurement result through a graphic processing unit and displays and outputs the measurement result, and the loudspeaker converts the rendering result into a voice signal through an audio processing unit and broadcasts the voice signal. Under the condition of non-contact measurement, the problems that a traditional infrared measurement technology and a traditional laser height measurement technology are poor in precision and prone to being greatly influenced by ambient light and reflection conditions are solved, and height data are transmitted to a user in a screen display and voice broadcast mode.

Description

Technical Field

[0001] The present invention relates to the field of health detection, and in particular to an intelligent height measurement method, system and device based on millimeter wave radar technology. Background Art

[0002] The implementation method of height measurement seems simple, but it is a relatively difficult task to simultaneously meet many design requirements such as high accuracy, ease of use, strong interactivity, and ultimately form a non-contact product that is competitive in both function and performance.

[0003] At present, the common height measurement devices on the market mainly include contact height ruler, infrared altimeter, and laser altimeter. Among them, the contact height ruler requires the user to have direct contact with the device, and usually reads the height by touching the horizontal bar with the head. This type of equipment is prone to cross infection when used in public places, and the user experience is poor; the infrared altimeter uses infrared ranging technology. The infrared measuring instrument calculates the height of the person being measured by emitting infrared light and receiving reflected light. However, infrared ranging technology is greatly affected by the environment and has high requirements for the reflective surface, and the measurement results are prone to inaccuracy; the laser altimeter measures the user's height through a laser beam. Although it is non-contact, it is greatly affected by ambient light and reflection conditions. The measurement accuracy decreases in strong light or poor reflection. Moreover, the laser measurement is a linear beam, which is suitable for point-to-point precision measurement, but it cannot automatically identify the highest point position of complex objects, thus affecting the measurement accuracy. In addition, such devices usually lack more interactive functions and can only provide simple measurement results.

[0004] Therefore, it is necessary to design a height measurement device to solve the problems of poor accuracy of traditional measurement technology and easy interference from hair occlusion, and to transmit height data to users through screen display and voice broadcast. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the above-mentioned prior art and to provide an intelligent height measurement method, system and device based on millimeter wave radar technology. The millimeter wave radar is not affected by ambient light, has strong adaptability, can provide high-precision measurement under various conditions, displays expressions and measurement values ​​on the screen, and broadcasts the results through a loudspeaker, providing an interesting interactive method.

[0006] Among them, the intelligent height measurement method based on millimeter wave radar technology includes the following steps:

[0007] S1: Adjust the horizontality of the device, detect the position of the measurement target through the millimeter wave radar, measure the height, collect the measurement data and send it to the main control;

[0008] S2: The main control processes the measurement data, calculates the height of the measurement target and generates a measurement result, and sends it to the display screen and the speaker;

[0009] S3: The display screen renders the measurement result through a graphics processing unit and displays it, and the speaker converts the rendering result into a voice signal through an audio processing unit and broadcasts it.

[0010] Furthermore, in step S1, a level adjustment device is provided on the connecting member, and the level adjustment device is used to adjust the levelness of the device as required to ensure the measurement accuracy.

[0011] Furthermore, in step S1, collecting measurement data by using the millimeter wave radar further includes:

[0012] The millimeter wave radar adopts patch antenna technology and is set at the bottom of the device, flush with the lowest point of the measurement target. The radar emission direction is facing the highest point of the measurement target, and millimeter waves are emitted to the measurement target and then reflected wave signals are received, and the flight time and reflection characteristics of the millimeter waves are measured to obtain the measurement data.

[0013] Furthermore, the flight time is the time it takes for the signal to reach the target and reflect back. The relationship between the flight time Δt and the distance between the radar and the measurement target is expressed as:

[0014]

[0015] The time difference Δt of the reflected signal of the feet of the measured target is calculated according to the distance from the standing position of the measured target to the millimeter-wave radar. The millimeter-wave radar captures the reflected signal of the target head, and the height is calculated by measuring the flight time of this point. The flight time of the head reflected signal is set to Δt1, and the height H is calculated by the following formula:

[0016]

[0017] Among them, c is the propagation speed of millimeter waves in air, which is close to the speed of light.

[0018] Further, in step S2, the main control is connected to the millimeter radar wave, and data is sent and received to each other through a data line; the main control is connected to the display screen, and display data is transmitted through a signal line; the main control is connected to the speaker, and voice data is transmitted through an audio line;

[0019] The main control is integrated with a microcontroller MCU, which calculates and processes data in real time and controls the display screen and the speaker to output;

[0020] The display screen provides display of height measurement results and user interaction functions.

[0021] On the other hand, an intelligent height measurement system based on millimeter wave radar technology is provided, comprising: a millimeter wave radar module, an intelligent data processing module, a user interaction module, and a level adjustment module;

[0022] The millimeter wave radar module transmits millimeter waves to the measurement target, receives reflected wave signals, and calculates the height by measuring the flight time and reflection characteristics of the waves;

[0023] The main control module processes the data from the millimeter wave radar module through the microcontroller MCU, calculates the height of the measured target and generates a measurement result, and sends it to the user interaction module;

[0024] The user interaction module includes a display screen and a speaker, providing interactive display and voice broadcast functions;

[0025] The level adjustment module is used to adjust the level of the device as needed to ensure measurement accuracy.

[0026] Furthermore, an intelligent height measurement device based on millimeter wave radar technology is provided, comprising: a millimeter wave radar, a main control, a display screen, a speaker, a level adjustment device and a power supply module;

[0027] The main control is respectively connected to the display screen, the speaker, the millimeter-wave radar and the power supply module. The main control receives the measurement data of the millimeter-wave radar through a data line, transmits display data to the display screen through a signal line, and transmits voice data to the speaker through an audio line;

[0028] The millimeter wave radar is installed at the bottom of the device, and the radar emission direction is facing the highest standing point of the measurement target;

[0029] The display screen is installed on the front of the device for displaying measurement results and interactive content, and the speaker is installed inside the device for voice broadcasting;

[0030] The power supply module includes a battery and a charging module to provide the power required by the entire device;

[0031] The level adjustment device is arranged on a connecting piece on the back side of the device.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention uses millimeter wave radar to measure height, which is non-contact, unaffected by ambient light, highly adaptable, and can provide high-precision measurement under various conditions. It can also penetrate the hair and directly measure the highest point of the scalp and skull, increasing the accuracy to 0.1 mm and reducing measurement errors.

[0034] (2) The present invention provides a display screen for rich interaction with the user and also provides a loudspeaker for broadcasting to enhance the user experience;

[0035] (3) The present invention provides a horizontal adjustment device on the connecting piece to ensure the measurement accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached picture:

[0038] Figure 1 This is a flow chart of an intelligent height measurement method based on millimeter wave radar technology of the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of an intelligent height measurement device based on millimeter wave radar technology according to the present invention;

[0040] Figure 3 This is a schematic diagram of the working process of an intelligent height measurement system based on millimeter wave radar technology of the present invention;

[0041] Figure 4 The present invention is a user operation flow diagram of an intelligent height measurement system based on millimeter wave radar technology. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0044] The present invention aims to provide a non-contact, high-precision height measurement device with good user interaction experience. The invention solves the problems of poor accuracy of traditional infrared measurement technology and easy interference by hair occlusion, and transmits height data to users through screen display and voice broadcast, and synchronizes height measurement data to users' mobile devices through Bluetooth and WIFI.

[0045] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments.

[0046] Example 1

[0047] like Figure 1 As shown, the technical solution of an intelligent height measurement method based on millimeter wave radar technology provided in this embodiment includes the following steps:

[0048] S1: Adjust the horizontality of the device, detect the position of the measurement target through the millimeter wave radar, measure the height, collect the measurement data and send it to the main control;

[0049] S2: The main control processes the measurement data, calculates the height of the measurement target and generates a measurement result, and sends it to the display screen and the speaker;

[0050] S3: The display screen renders the measurement result through a graphics processing unit and displays it, and the speaker converts the rendering result into a voice signal through an audio processing unit and broadcasts it.

[0051] Wherein, in step S1, a level adjustment device is provided on the connecting member of the device to ensure that the device maintains a horizontal position during installation, and the level adjustment device is used to adjust the level of the device as needed to ensure measurement accuracy.

[0052] Furthermore, in step S1, collecting measurement data by using the millimeter wave radar further includes:

[0053] The millimeter wave radar adopts patch antenna technology and is set at the bottom of the device, flush with the lowest point of the measurement target. The radar emission direction is facing the highest point of the measurement target, and millimeter waves are emitted to the measurement target and then reflected wave signals are received, and the flight time and reflection characteristics of the millimeter waves are measured to obtain the measurement data.

[0054] Millimeter wave radar is not affected by ambient light, has strong adaptability, and can provide high-precision measurements under various conditions. It can pass through the hair and directly measure the highest point of the scalp skull, increasing the accuracy to 0.1 mm and reducing measurement errors.

[0055] Specifically, in this embodiment, the flight time is the time it takes for a signal to reach a target and reflect back. The relationship between the flight time Δt and the distance between the radar and the measurement target is expressed as:

[0056]

[0057] The time difference Δt of the reflected signal of the feet of the measured target is calculated according to the distance from the standing position of the measured target to the millimeter-wave radar. The millimeter-wave radar captures the reflected signal of the target head, and the height is calculated by measuring the flight time of this point. The flight time of the head reflected signal is set to Δt1, and the height H is calculated by the following formula:

[0058]

[0059] Among them, c is the propagation speed of millimeter waves in air, which is close to the speed of light.

[0060] It can be seen that in this embodiment, we fix the flight time of the feet by letting the measurement target stand in a specific position, and only need to measure the flight time of the top to calculate the height of the measurement target.

[0061] Furthermore, the main control is connected to the millimeter radar wave, and transmits and receives data to each other through a data line; the main control is connected to the display screen, and transmits display data through a signal line; the main control is connected to the speaker, and transmits voice data through an audio line;

[0062] The main control is integrated with a microcontroller MCU, which calculates and processes data in real time and controls the display screen and the speaker to output;

[0063] The display screen provides display of height measurement results and user interaction functions.

[0064] Example 2

[0065] This embodiment provides an intelligent height measurement system based on millimeter wave radar technology, including: a millimeter wave radar module, an intelligent data processing module, a user interaction module, and a level adjustment module;

[0066] The millimeter wave radar module transmits millimeter waves to the measurement target, receives reflected wave signals, and calculates the height by measuring the flight time and reflection characteristics of the waves;

[0067] The main control module processes the data from the millimeter wave radar module through the microcontroller MCU, calculates the height of the measured target and generates a measurement result, and sends it to the user interaction module;

[0068] The user interaction module includes a display screen and a speaker, providing interactive display and voice broadcast functions;

[0069] The level adjustment module is used to adjust the level of the device as needed to ensure measurement accuracy.

[0070] The working process of the system in this embodiment is as follows: Figure 3 As shown:

[0071] Step 1: System startup and initialization;

[0072] Step 2: The main control module controls the millimeter wave radar module to detect the target and detect whether the target exists;

[0073] Step 3: If the target exists, the millimeter-wave radar module measures the height and collects the measurement data and sends it to the main control module;

[0074] Step 4: The main control module calculates the collected measurement data, generates measurement results and sends them to the user interaction module;

[0075] Step 5: The user interaction module performs display and voice broadcast.

[0076] Example 3

[0077] This embodiment provides an intelligent height measurement device based on millimeter wave radar technology, such as Figure 2 As shown, it includes: millimeter wave radar, main control, display screen, speaker, level adjustment device and power supply module;

[0078] The main control is respectively connected to the display screen, the speaker, the millimeter-wave radar and the power supply module. The main control receives the measurement data of the millimeter-wave radar through a data line, transmits display data to the display screen through a signal line, and transmits voice data to the speaker through an audio line;

[0079] The millimeter wave radar is installed at the bottom of the device, and the radar emission direction is facing the highest standing point of the measurement target;

[0080] The display screen is installed on the front of the device for displaying measurement results and interactive content, and the speaker is installed inside the device for voice broadcasting;

[0081] The power supply module includes a battery and a charging module to provide the power required by the entire device;

[0082] The level adjustment device is arranged on a connecting piece on the back side of the device.

[0083] The overall workflow of the user operating the device of this embodiment is as follows: Figure 4 As shown:

[0084] Step 1: Device startup and initialization;

[0085] Step 2: The speaker announces the measurement prompt and the user stands at a designated location on the device;

[0086] Step 3: Millimeter wave radar measures the user's height;

[0087] Step 4: The master controls the measurement data;

[0088] Step 5: The display shows the height and interactive expressions, and the speaker announces the measurement results;

[0089] Step 6: Wait for the next user.

[0090] Example 4

[0091] This embodiment combines millimeter wave radar with ultrasonic ranging technology, optical sensor measurement technology, image recognition technology, and infrared measurement technology, and improves measurement accuracy and stability through multi-data fusion technology.

[0092] Finally, it should be noted that the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0093] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An intelligent height measurement method based on millimeter wave radar technology, characterized in that: The steps include: S1: Adjust the horizontality of the device, detect the position of the measurement target through the millimeter wave radar, measure the height, collect the measurement data and send it to the main control; S2: The main control processes the measurement data, calculates the height of the measurement target and generates a measurement result, and sends it to the display screen and the speaker; S3: The display screen renders the measurement result through a graphics processing unit and displays it, and the speaker converts the rendering result into a voice signal through an audio processing unit and broadcasts it.

2. The intelligent height measurement method based on millimeter wave radar technology according to claim 1 is characterized in that: In step S1, a level adjustment device is provided on the connecting member of the device, and the level adjustment device is used to adjust the levelness of the device as required to ensure measurement accuracy.

3. The intelligent height measurement method based on millimeter wave radar technology according to claim 1 is characterized in that: In step S1, collecting measurement data by millimeter wave radar further includes: The millimeter wave radar adopts patch antenna technology and is set at the bottom of the device, flush with the lowest point of the measurement target. The radar emission direction is facing the highest point of the measurement target, and millimeter waves are emitted to the measurement target and then reflected wave signals are received, and the flight time and reflection characteristics of the millimeter waves are measured to obtain the measurement data.

4. The intelligent height measurement method based on millimeter wave radar technology according to claim 3 is characterized in that: The flight time is the time it takes for the signal to reach the target and reflect back. The relationship between the flight time Δt and the distance between the radar and the measurement target is expressed as: The time difference Δt of the reflected signal of the feet of the measured target is calculated according to the distance from the standing position of the measured target to the millimeter-wave radar. The millimeter-wave radar captures the reflected signal of the target head, and the height is calculated by measuring the flight time of this point. The flight time of the head reflected signal is set to Δt1, and the height H is calculated by the following formula: Among them, c is the propagation speed of millimeter waves in air, which is close to the speed of light.

5. The intelligent height measurement method based on millimeter wave radar technology according to claim 1 is characterized in that: In step S2, the main control is connected to the millimeter radar wave, and data is sent and received to each other through a data line; the main control is connected to the display screen, and display data is transmitted through a signal line; the main control is connected to the speaker, and voice data is transmitted through an audio line; The main control is integrated with a microcontroller MCU, which calculates and processes data in real time and controls the display screen and the speaker to output; The display screen provides display of height measurement results and user interaction functions.

6. Intelligent height measurement system based on millimeter wave radar technology, characterized in that: include: Millimeter wave radar module, intelligent data processing module, user interaction module, and horizontal adjustment module; The millimeter wave radar module transmits millimeter waves to the measurement target, receives reflected wave signals, and calculates the height by measuring the flight time and reflection characteristics of the waves; The main control module processes the data from the millimeter wave radar module through the microcontroller MCU, calculates the height of the measured target and generates a measurement result, and sends it to the user interaction module; The user interaction module includes a display screen and a speaker, providing interactive display and voice broadcast functions; The level adjustment module is used to adjust the level of the device as needed to ensure measurement accuracy.

7. An intelligent height measurement device based on millimeter wave radar technology, characterized in that: include: Millimeter wave radar, main control, display screen, speaker, level adjustment device and power supply module; The main control is respectively connected to the display screen, the speaker, the millimeter-wave radar and the power supply module. The main control receives the measurement data of the millimeter-wave radar through a data line, transmits display data to the display screen through a signal line, and transmits voice data to the speaker through an audio line; The millimeter wave radar is installed at the bottom of the device, and the radar emission direction is facing the highest standing point of the measurement target; The display screen is installed on the front of the device for displaying measurement results and interactive content, and the speaker is installed inside the device for voice broadcasting; The power supply module includes a battery and a charging module to provide the power required by the entire device; The level adjustment device is arranged on a connecting piece on the back side of the device.

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