CN212032194U

CN212032194U - SD card with in-vehicle data transfer and storage function

Info

Publication number: CN212032194U
Application number: CN202021049749.2U
Authority: CN
Inventors: 李明伟; 林万才
Original assignee: JIANGSU DUWAN ELECTRONIC TECHNOLOGY CO LTD
Current assignee: JIANGSU DUWAN ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-11-27
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a SD card that possesses interior data transfer storage function of car, SD card and special storage device communication connection, the SD card includes storage unit, MCU, power module, wireless communication unit, storage unit, power module and wireless communication unit respectively with MCU communication connection, storage unit is used for the stored data, power module is used for supplying power for MCU, MCU control storage unit and wireless communication unit, the data of storage in storage unit pass through wireless communication unit transmits for special storage device. The utility model discloses specially to on-vehicle recording equipment development, to on-vehicle recording equipment to the high requirement of data safety, can provide safer data storage function, have lower consumption moreover. And has the advantages of simple structure, reasonable design and easy manufacture.

Description

SD card with in-vehicle data transfer and storage function

Technical Field

The utility model belongs to the semiconductor storage field, more specifically say, relate to a SD card of data unloading storage function in utensil car.

Background

The SD card has small volume and large storage capacity, and is widely applied to many fields, for example, on a data recording device (vehicle-mounted DVR or video recorder), a plurality of field recorded data are generated and stored in the device, and generally, an SD card slot interface is designed on the device and can store the data on an SD card inserted into the card slot. Other uncertain factors such as poor contact of the SD card and important data loss caused by high temperature and anti-collision can exist in the data transfer process of the SD card, so that great inconvenience is brought to normal use of a user.

Particularly, in the vehicle-mounted recording device, because there are many uncertainties in the running process of the vehicle, such as traffic accidents, accidental falling of the vehicle into water, and the like, in such a situation, there is a high requirement for the reliability of the data stored in the vehicle-mounted recording device, and therefore, an effective solution is needed.

Disclosure of Invention

1. Problems to be solved

The problem to the data reliability that prior art can't solve the interior storage of on-vehicle recording equipment, the utility model provides an SD card of data unloading storage function in the utensil car.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows: the utility model provides a possess SD card of in-car data commentaries on classics storage function, SD card and special storage device communication connection, the SD card includes memory cell, MCU, power module, wireless communication unit, memory cell, power module and wireless communication unit respectively with MCU communication connection, memory cell is used for the storage data, power module is used for supplying power for MCU, MCU control memory cell and wireless communication unit, the data of storage in memory cell pass through special storage device is given in the transmission of wireless communication unit. The utility model discloses specially to on-vehicle recording equipment development, to the high requirement of on-vehicle recording equipment to data safety, can provide safer data storage function.

Further, the wireless communication unit is communicatively coupled to a transfer node, which is communicatively coupled to a dedicated storage device. The utility model discloses a transmission node and special storage device communication connection can guarantee that data can be faster more smoothly transmit for special storage device.

Further, the transmission node is an eMMC or a TF card.

Further, encrypted communication is carried out between the wireless communication unit and the transmission node and between the transmission node and the special storage device.

Furthermore, the special storage device has the protection functions of water resistance, fire resistance and impact resistance. The utility model discloses a with data storage in the special storage device who possesses high-grade safeguard function, have higher reliability and security.

Further, the chip adopted by the MCU is ESP 32. The chip adopts ESP32 to enable the technical scheme to have lower power consumption.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses develop specially to vehicle-mounted recording equipment, to vehicle-mounted recording equipment to the high requirement of data security, can provide safer, more reliable data storage function, and have lower consumption;

(2) the utility model discloses simple structure, reasonable in design easily makes.

Drawings

FIG. 1 is a schematic diagram of the present invention;

fig. 2 is a schematic view of the working process of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

As shown in fig. 1, the utility model comprises a power supply module, a wireless communication unit, a MCU and a storage unit, wherein the power module, the wireless communication unit and the storage unit are respectively in communication connection with the MCU, the MCU controls the wireless communication unit and the storage unit, specifically, the MCU controls the on-off of encryption transmission of the wireless communication unit, the MCU controls the reading and writing of the storage unit, the power module supplies power to the MCU, the storage unit provides a data local storage function, the wireless communication unit provides a wireless encryption transmission function, the data stored in the recording equipment in the vehicle is encrypted and transmitted to the transmission node through a wireless network, and then encrypted and transmitted to the special storage equipment through the transmission node, the mode which can be realized is a local area network and the like, therefore, the aim of transferring the data stored in the storage unit from the local to the special storage device with the protection function through the wireless network is fulfilled, and the safety and the reliability of the data are ensured.

More specifically, the MCU stores the interface data of the SD card in the storage unit, so as to realize local storage, and can set the storage mode to an encrypted mode, i.e. the interface data is transmitted to the transmission node in an encrypted manner through the wireless network during transmission, so as to realize point-to-point data migration and transmission between the transmission node and the SD card, and then the transmission node transmits the data to the dedicated storage device through an encrypted transmission mechanism, so as to transfer the important data of the in-vehicle video recorder to the dedicated storage device with better security and protection function through wireless. The purpose of the transmission node is to enable faster and smoother data transfer from the SD Card to a dedicated storage device, and in particular, the transmission node may be an eMMC (Embedded Multi Media Card) or a TF (Trans-flash Card) Card, which is disposed in the dedicated storage device.

The utility model discloses the special storage device who says is a storage device who has high reliability and security, and it possesses waterproof, fire prevention, the function of protecting against shock, and specifically speaking, its protection level is: fire rating: 1100 ℃, 15min, water resistance rating: 100m, 240 hours, impact rating: 100Gs, 50ms, penetration: 23kg/1.5m/0.4cm²And (3) extruding: 110kN, quenching: 1100 ℃, water flushing with 10kg/s, antiknock: frontal overpressure 1008kPa/0.5ms, electromagnetic storm: 10kA, 10ms, 0.2 m. The data stored in the dedicated storage device has higher security and reliability.

In specific implementation, the chip adopted by the MCU is ESP32, and ESP32 is specially designed for mobile equipment, wearable electronic products and application of the Internet of things; the Electronic Stability Program (ESP) 32 can be awakened periodically only under specific conditions in the application scene of the low-power-consumption Internet of things sensor, and the low duty ratio can greatly reduce the energy consumption of an ESP32 chip; and the output power of the radio frequency power amplifier can be adjusted to achieve the best balance between communication distance, data rate and power consumption. Therefore, the problem that the overall power consumption of the wireless SD card is too high in the prior art can be effectively solved.

The utility model discloses a concrete work flow is specifically explained below in connection with fig. 2, the utility model discloses the setting utilizes its memory cell to provide local storage service for on-vehicle recording equipment's data in on-vehicle recording equipment, when providing local storage, still transmits data to the higher special storage device of protection rank through wireless encryption to ensure the confidentiality and the security of data. The utility model discloses specially for on-vehicle recording equipment development, to on-vehicle recording equipment to the high requirement of data safety, can provide safer data storage function, have lower consumption moreover.

Claims

1. The SD card with the in-vehicle data transfer and storage function is in communication connection with a special storage device, and is characterized in that: the SD card comprises a storage unit, an MCU, a power module and a wireless communication unit, wherein the storage unit, the power module and the wireless communication unit are respectively in communication connection with the MCU, the storage unit is used for storing data, the power module is used for supplying power to the MCU, the MCU is used for controlling the storage unit and the wireless communication unit, and the data stored in the storage unit are transmitted to the special storage device through the wireless communication unit.

2. The SD card with in-vehicle data unloading and storing function according to claim 1, wherein: the wireless communication unit is in communication connection with a transfer node, which is in communication connection with a dedicated storage device.

3. The SD card with in-vehicle data unloading and storing function according to claim 2, characterized in that: the transmission node is an eMMC or a TF card.

4. The SD card with in-vehicle data unloading and storing function according to claim 2, characterized in that: and the wireless communication unit and the transmission node and the special storage equipment are in encrypted communication.

5. The SD card with in-vehicle data unloading and storing function according to any one of claims 1 to 4, wherein: the special storage device has the protection functions of water resistance, fire resistance and impact resistance.

6. The SD card with in-vehicle data unloading and storing function according to any one of claims 1 to 4, wherein: the chip adopted by the MCU is ESP 32.