Wireless wearable vibration tactile expression system

Abstract

The invention discloses a wireless wearable vibration tactile expression system. The wireless wearable vibration tactile expression system comprises a wireless vibrator module, an elastic vest and a vibration coding scheme. The wireless oscillator module mainly comprises a central control module, a wireless communication module and an oscillator module. The wireless communication module is used for receiving an external vibration instruction and sending the instruction to the central control module. The central control module is responsible for processing the vibration instruction and controlling the vibrator module to vibrate. And the wireless vibrator is deployed on the elastic vest according to a vibration coding scheme. According to the invention, the expression of multi-mode takeover early warning information of vibration touch can be realized, and the implementation of related experiments of automatic driving takeover is facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vibration tactile early warning technology, and particularly relates to a wireless wearable vibration tactile expression system. BACKGROUND

[0002] With the rapid development of automatic driving technology, the safety of automatic driving has attracted widespread attention. Although the automatic driving vehicles on the market can enable automatic driving in specific scenarios, the driver is still required to focus on the current driving vehicle in order to perform the driving takeover task in emergency situations. Therefore, an automatic driving assistance device with an emergency scene warning function is particularly necessary.

[0003] Due to the advantages of being distributed throughout the body and being able to produce continuous signals without special attention, in recent years, it has become a hot spot in the field of human-computer interaction. The traditional takeover system sends a takeover request through the visual and auditory channels, such as voice prompts, sirens, and warning lights. In the actual driving environment, the visual and auditory perception channels are easily disturbed, leading to takeover errors, while the vibration tactile early warning has obvious advantages and can make up for the shortcomings of the visual and auditory interaction system.

[0004] In a complex real driving environment, the takeover warning is required to provide detailed information and accurately express the current dangerous situation, so it is necessary to design a vibration tactile coding for the human body. Considering coding memory, information expression, and vibration conditions, different coding schemes have a significant impact, and it is crucial to design an efficient and accurate tactile coding scheme. SUMMARY

[0005] In view of the above defects, the present application provides a wireless wearable vibration tactile expression system, which can realize the expression of multi-modal takeover warning information of vibration tactile, and facilitate the performance of automatic driving takeover related experiments.

[0006] A wireless wearable vibration tactile expression system, comprising a wireless vibrator module and an elastic vest, the wireless vibrator module comprising a central control module, a wireless communication module and a vibrator module; the wireless communication module is used for receiving external vibration instructions and sending them to the central control module; the central control module is responsible for processing the vibration instructions and controlling the vibrator module to vibrate; the wireless vibrator is disposed on the elastic vest according to the vibration coding scheme.

[0007] As a preferred, the wireless vibrator module adopts a CC2530 chip, the chip RF_N and RF_P pins are connected with the wireless communication module, and the P1_0 pin is connected with the led module; the CC2530 chip is connected with a decoupling capacitor, a bias resistor and a crystal oscillator to form a CC2530 minimum system to ensure normal work; the P1_0 and P1_1 pins of the CC2530 chip are connected with the vibrator module, and after receiving the vibration instruction, a signal is sent to control the vibrator module to vibrate.

[0008] As preferred, in the wireless communication module circuit, the ANTI is an antenna, which is controlled by the CC2530 master chip to realize information sending and receiving; the wireless communication module port 1 is connected with the CC2530 RF_P pin, and the port 2 is connected with the CC2530 RF_N pin, specifically, the ANTI antenna is connected with one end of the capacitor C10, the other end of the capacitor C10 is connected with the capacitor C9 and one end of the inductor L3 respectively, the other end of the capacitor C9 is connected with the RF_N pin of the CC2530 chip through the capacitor C8 and connected with the ground through the inductor L2; the other end of the inductor L3 is connected with the RF_P pin of the CC2530 chip through the capacitor C11 and connected with the ground through the capacitor C13; the ANTI antenna realizes information sending and receiving by the CC2530 master chip.

[0009] As preferred, the LED module includes an LED indicator light, one port of the LED indicator light is connected with the P1_0 port of the central control module, and the other port is connected with the ground GND.

[0010] As preferred, a certain number of wireless vibrators are arranged on the wearable vest, the actual driving scene to be referred to, i.e. the dangerous scene requiring human emergency takeover in automatic driving, is determined, and the vibration mode of the vibrator is controlled according to the scene, i.e. the vibration position and vibration mode are changed.

[0011] As preferred, the vibrator is arranged at four positions of the driver's arms, wrists, waist and abdomen of the wearable vest, and two vibration modes of continuous vibration and intermittent vibration with fixed frequency amplitude are respectively arranged; according to the priority of the dangerous scene, the number of vibration positions increases with the urgency of the dangerous scene, and the direction of vibration is consistent with the direction of the danger source.

[0012] The beneficial effects of the present application are:

[0013] 1. The wireless wearable vibration tactile expression system disclosed in the present application can realize the expression of multi-modal takeover warning information of vibration tactile, and facilitates the performance of automatic driving takeover related experiments.

[0014] 2. The present application adopts a wireless communication mode to transmit vibration instructions, reduces the interference of wired devices on testers, facilitates wearing and adjustment, and greatly improves the portability and accuracy of experiments.

[0015] 3. The present application provides self-selectable vibration positions and multiple vibration modes, expands the dimension of coding, can derive more coding combinations, and brings more possibilities for experimental design.

[0016] 4. The present application provides an experimentally verified coding scheme design, which has high takeover success rate and short takeover time, and has important significance for the strategy research of automatic driving takeover. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced.

[0018] Figure 1 is a system block diagram of an embodiment of the present application;

[0019] Figure 2 is a wireless vibrator structure diagram of an embodiment of the present application;

[0020] Figure 3 is a circuit schematic diagram of a wireless vibrator of an embodiment of the present application;

[0021] Figure 4 is a wireless vibrator PCB board front structure diagram of an embodiment of the present application;

[0022] Figure 5 is a wireless wearable vest schematic diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0024] The present application provides a wireless wearable vibration tactile expression system, mainly including a wireless vibrator module, an elastic vest and a vibration coding scheme. The wireless vibrator module mainly includes a central control module, a wireless communication module and a vibrator module. The wireless communication module is used for receiving external vibration instructions and sending to the central control module. The central control module is responsible for processing the vibration instructions and controlling the vibrator module to vibrate. The wireless vibrator is deployed on the elastic vest according to the vibration coding scheme. The system block diagram is shown as Figure 1 .

[0025] As shown in Figure 2 , it is a wireless vibrator structure diagram. The wireless vibrator module includes a central control module, a wireless communication module, an LED indicator, a power module, a switch module and a vibrator module. The central control module transmits and receives information through the wireless communication module, controls the vibrator module to start or stop vibration, the power module supplies power to the whole system, the switch module controls the power module to close or turn off, and the LED lamp indicates the current working condition. The whole system is designed as a PCB printed circuit board integration, and is powered by an external battery.

[0026] As shown in Figure 3The circuit schematic of the wireless vibrator is shown. The CC2530 chip RF_N and RF_P pins are connected to the wireless communication module, the P1_0 pin is connected to the LED module, and in addition, the CC2530 chip is connected to a decoupling capacitor, a bias resistor, and a crystal oscillator to form a CC2530 minimum system to ensure normal operation. The CC2530 chip P1_0 and P1_1 pins are connected to the vibrator module, and after receiving the vibration instruction, a signal is sent to control the vibrator module to vibrate.

[0027] In the wireless communication module circuit, ANTI is an antenna controlled by the CC2530 master chip to realize information sending and receiving. Port 1 of the wireless communication module is connected to the CC2530 RF_P pin, and port 2 is connected to the CC2530 RF_N pin. Specifically, the ANTI antenna is connected to one end of capacitor C10, the other end of capacitor C10 is connected to capacitor C9 and one end of inductor L3, the other end of capacitor C9 is connected to the RF_N pin of the CC2530 chip through capacitor C8 and to ground through inductor L2; the other end of inductor L3 is connected to the RF_P pin of the CC2530 chip through capacitor C11 and to ground through capacitor C13; the ANTI antenna realizes information sending and receiving by the CC2530 master chip.

[0028] In the LED module, an LED indicator lamp is included, one port of the LED indicator lamp is connected to the central control module P1_0 port, and the other port is connected to the ground GND. When the system is working, the LED lamp emits light to indicate the working condition.

[0029] As shown in Figure 4 The wireless vibrator PCB board front structure diagram is shown. The entire system is designed as a PCB printed circuit board integration, powered by an external battery. The central control module uses a CC2530 chip, the P1_0 pin of which is connected to the LED module, and the P1_0 and P1_1 pins are connected to the vibrator module, and the RF_N and RF_P pins are connected to the wireless communication module. The wireless communication module receives external signals and transmits them to the central control module. The central control module outputs vibration signals to the vibrator module and indicator light signals to the indicator light module to realize vibrator vibration and indicator light warning.

[0030] The vibrator module includes two DC eccentric vibrators with a diameter of 10 mm and a thickness of 2.7 mm. The positive electrodes are connected to the central control module P1_0 and P1_1 through welding, and the negative electrodes are connected to the central control module GND end.

[0031] The power module is a 3.7V rechargeable lithium battery connected to the system and fixed on the PCB board with hot melt glue to power the system. Port 1 of the interface is connected to the central control module 3v3 power port through a switch module, and port 2 is connected to the ground.

[0032] The switch module is a three-prong two-stage dial switch, which can control the wireless vibrator to start and stop working.

[0033] As Figure 5 The wireless wearable vest is shown in the figure. According to different experimental requirements, a certain number of wireless vibrators can be deployed on any part of the wearable vest.

[0034] The vibration coding scheme needs to determine the actual driving scene as a reference, that is, the dangerous scene that needs to be manually taken over in automatic driving. As shown in Table 1, ten typical emergency takeover scenarios are divided into three priorities from low to high according to the degree of danger.

[0035] Table 1: Ten emergency takeover scenarios

[0036]

[0037] These ten scenarios can be divided into two categories: static scenarios and dynamic scenarios. Static scenarios include hardware damage, bad weather, complex road conditions, and ADS (automatic driving system) abnormalities, a total of 4. Dynamic scenarios include front, right front, left front, rear, active road, and accident, a total of 6.

[0038] As shown in Table 2, the specific coding scheme designed by the system is shown in the table.

[0039] Table 2: Coding scheme

[0040]

[0041] In the figure, the letter Be represents the abdomen, Wr represents the wrist, Ar represents the arm, Wa represents the waist, L represents the left side, R represents the right side, and ALL represents all parts. For different scenarios, different expressions are adopted, that is, the vibration site and vibration mode are changed, so as to achieve the function of transmitting information through vibration tactile. The number of vibration sites increases with the urgency of the dangerous scene, and at least 4 sites are arranged for high-priority scenarios to enhance the vibration and improve the takeover efficiency; the direction of vibration is consistent with the direction of the danger source, which facilitates the driver to make a judgment; for dynamic scenarios, continuous vibration is used as a reminder to increase the sense of urgency.

[0042] Finally, it should be noted that the above-described preferred embodiments of the present application are not intended to limit the present application, and although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A wireless wearable vibrotactile expression system, characterized in that, The wireless vibrator module comprises a central control module, a wireless communication module and a vibrator module. The wireless communication module is used for receiving external vibration instructions and sending the vibration instructions to the central control module.

2. The vibrational tactile rendering system of claim 1, wherein, The wireless vibrator module adopts a CC2530 chip, the RF_N and RF_P pins of the chip are connected with the wireless communication module, and the P1_0 pin is connected with an LED module.

3. The vibrational tactile rendering system of claim 2, wherein, In the wireless communication module circuit, ANTI is an antenna controlled by the CC2530 master chip to realize information sending and receiving.

4. The vibrational tactile rendering system of claim 3, wherein, The LED module comprises an LED indicator light, one port of the LED indicator light is connected with the P1_0 port of the central control module, and the other port is connected with the ground end GND.

5. The vibrational tactile rendering system of any of claims 1-4, wherein, A certain number of wireless vibrators are arranged on a wearable vest, and a reference actual driving scene, i.e.

6. The vibrational tactile rendering system of claim 5, wherein, The vibrators are arranged on the arms, wrists and waist and abdomen of the wearable vest of the driver, and two vibration modes of continuous vibration and intermittent vibration with fixed frequency amplitude are set. According to the priority of the dangerous scene, the number of vibration parts increases with the urgency of the dangerous scene, and the vibration direction is consistent with the direction of the danger source.

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