CN211352459U

CN211352459U - Handheld device for accessing 433MHz wireless data by utilizing wifi signal

Info

Publication number: CN211352459U
Application number: CN202020366528.1U
Authority: CN
Inventors: 尧兵; 廖小强; 孙琪
Original assignee: Chengdu Avic Iflytek Technology Co ltd
Current assignee: Chengdu Avic Iflytek Technology Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-08-25
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a handheld device for accessing 433MHz wireless data by utilizing wifi signals, which comprises a conversion device and a handheld device, wherein the conversion device comprises a shell, a wifi communication module, a 433MHz wireless communication module, a processor, a memory and a power module are arranged in the shell, and the processor is connected with the wifi communication module, the 433MHz wireless communication module and the memory; the power module is connected with the processor, the wifi communication module and the 433MHz wireless communication module. The utility model aims at providing an utilize wifi signal access 433MHz wireless data's handset, expand the application occasion of 433MHz wireless data through wifi signal hand-held device, integrated wifi signal and 433MHz wireless data's transmission, make each frequency channel data transmission advantage complementary, both exert the advantage that 433MHz wireless data transmission distance is far away, compromise the convenient characteristics of wifi signal access again.

Description

Handheld device for accessing 433MHz wireless data by utilizing wifi signal

Technical Field

The utility model relates to a communication field technical field mainly relates to an utilize wifi signal to insert 433MHZ wireless data's hand-held device.

Background

433MHz radio communication has very good outdoor communication ability, and its license-free frequency channel's characteristics also lead to the application field not to go into in a hole, if go to develop corresponding display device and input device on every equipment, must lead to the fact the repeated development, waste unnecessary energy and cost.

The widely used handheld equipment generally has more perfect display function and input function, mature and reliable hardware, easier software development and easy expansion. But handheld devices typically have wifi communication capabilities and no 433MHz communication band.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an utilize wifi signal access 433MHZ wireless data's handset, expand the handheld device to 433MHz wireless data's application through the wifi signal and close, integrated wifi signal and 433MHz wireless data's transmission, make each frequency channel data transmission advantage complementary, both played the advantage that 433MHz wireless data transmission distance is far away, compromise the convenient characteristics of wifi signal access again.

The utility model discloses a following technical scheme realizes:

a handheld device for accessing 433MHz wireless data by utilizing a wifi signal comprises a conversion device and a handheld device, wherein the conversion device is connected with the handheld device through wifi; the conversion equipment comprises a shell, wherein a wifi communication module, a 433MHz wireless communication module, a processor, a memory and a power module are arranged in the shell, and the processor is connected with the wifi communication module, the 433MHz wireless communication module and the memory; the power module is connected with the processor, the wifi communication module and the 433MHz wireless communication module.

During the use, the handheld device establishes connection with the wifi communication module in the conversion device through the App application program, and the wifi communication module can receive data from the handheld device after the connection is established, or send data to the handheld device. When the handheld device needs to send data, the handheld device sends the data to the wifi communication module in a wifi mode, the wifi communication module sends the received data to the 433MHz wireless communication module through the processor, and the 433MHz wireless communication module sends the data out. When the handheld device needs to receive data, the 433MHz wireless communication module sends the received data to the wifi communication module through the processor, and the wifi communication module transmits the data to the handheld device.

In this scheme, use wifi as the medium, the convenient handheld device that has accessed 433 MHz's signal, not only abundant utilization handheld device's demonstration and input device, still very big extension handheld device's range of application.

Further, the power supply module comprises a power supply, a charging unit, a discharging unit and an SOC power supply management unit; the SOC power management unit is connected with the processor, the charging unit and the discharging unit, the charging unit is connected with the power supply, and the discharging unit is connected with the processor.

Further, still include temperature sensor, temperature sensor concatenates between the power and the charging unit. The method is used for detecting the temperature of the battery and ensuring the charging safety.

Further, still include the display, the display sets up in the outside of casing, and with the treater with SOC power management unit is connected. The display is used for receiving the data from the processor and displaying corresponding contents, and is also used for displaying the electric quantity of the power supply and the working state of the power supply.

Further, still include a plurality of LED lamp, LED set up in the outside of casing, and with the inside treater of casing or wifi communication module connects. The LED lamp is used for judging the working state of the conversion equipment.

Further, the model of wifi communication module is: ESP-WROOM-02. ESP-WROOM-02 is internally provided with an ultra-low power consumption Tensilica L10632-bit RISC processor, supports a Wi-Fi protocol stack, and configures parameters in a mode of receiving a serial port AT instruction set by ESP-WROOM-02, including configuring a power saving mode, configuring TCP/UDP parameters and the like, and storing the configuration parameters by an AT instruction stored in Flash and utilizing an internal memory of the module, so that the working mode is very flexible.

Further, the processor model is: STM32F107RCT 6.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the handheld device is expanded to the application occasion of 433MHz wireless data through the wifi signal, and the transmission of the wifi signal and the 433MHz wireless data is integrated, so that the transmission advantages of data in each frequency band are complementary, the advantage of long transmission distance of the 433MHz wireless data is exerted, and the characteristic of convenient access of the wifi signal is also considered;

(2) make full use of wifi communication module's AT instruction set function, conveniently configure into various modes and carry out data transmission to can set up the sleep mode through the AT instruction to wifi module when no data transmission carries out the power saving

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a power module of the present invention;

fig. 2 is a schematic structural diagram of the charging unit of the present invention;

fig. 3 is a schematic structural diagram of a discharge unit according to the present invention;

FIG. 4 is a schematic diagram of a connection relationship of a part of the circuit of the processor according to the present invention;

FIG. 5 is a schematic diagram of a connection relationship of a part of the circuit of the processor according to the present invention;

FIG. 6 is a schematic diagram of a connection relationship of a part of the circuit of the processor according to the present invention;

FIG. 7 is a schematic diagram of a connection relationship of a part of the circuit of the processor according to the present invention;

fig. 8 is a schematic diagram of the circuit connection relationship of the 433MH wireless communication module according to the present invention;

fig. 9 is the schematic diagram of the circuit connection relationship of the wifi communication module of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

As shown in the figures 1-9 of the drawings,

utilize wifi signal access 433MHz wireless data's handheld device, including the conversion equipment to and install the handheld device of the App application that can accept and send wifi communication module data, wherein, conversion equipment and handheld device pass through wifi and connect.

The conversion equipment comprises a shell, wherein an OLED display, a working state indicator lamp, a data receiving indicator lamp, a data sending indicator lamp and a wifi connection indicator lamp are installed on the outer side of the shell, and the OLED display is connected with the processor and used for receiving data from the processor and displaying corresponding content. The working state indicator light, the received data indicator light and the sent data indicator light are all connected with the controller, and the wifi connection indicator light is connected with the wifi communication module.

A wifi communication module with the model of ESP-WROOM-02, a 433MHz wireless communication module with the model of E22-400T30S, a processor with the model of STM32F107RCT6, a memory and a power supply module are arranged in the shell;

the processor is connected with the wifi communication module, the 433MHz wireless communication module and the memory; the processor, the wifi communication module and the 433MHz wireless communication module are communicated through serial ports, the 433MHz wireless communication module sends received wireless data to the processor in a serial port mode, and the processor receives serial port data of the 433MHz wireless communication module and sends the serial port data to the wifi communication module through the serial port UART1 after analyzing.

In the embodiment, when the conversion equipment does not receive data, the processor turns over the working state indicator lamp every 200 ms; after 433MHz wireless communication module received wireless data, send for the treater with the serial ports mode, after the treater received and come from 433MHz wireless communication circuit complete data of a frame, the treater is used for lighting the receipt data pilot lamp to control data pilot lamp and extinguish after 200ms, still be used for through serial ports UART1 with receiving all data send for wifi communication module, handheld device passes through the data that App application program received wifi communication module transmission, thereby realize 433MHz wireless data's receipt.

During data transmission, the data are transmitted by the App application program of the handheld device in a wifi mode, after the wifi communication module receives the data, the received data are transmitted to the processor through the serial port UART1, and the processor transmits to the 433MHz wireless communication module through the serial port UART 2. After the treater sends a complete data of frame for 433MHz wireless communication module, the treater lights and sends the data indicator lamp to control after 200ms and send the data indicator lamp and extinguish, 433MHz wireless communication module sends out the data of treater transmission with wireless mode, thereby has realized the two-way data communication between wifi communication module and the 433MHz wireless communication module.

When the processor has no data transmission, the processor sends a standby command through the serial port AT instruction to enable the wifi communication module to enter a sleep mode. When the wifi connection is kept, if no data is transmitted, the Wi-Fi Modem circuit is closed and the CPU is paused to save power, and at the moment, the wifi communication module controls the wifi connection indicator lamp to be turned off. For example, at DTIM3, each sleep 300ms, wake 3ms to receive the Beacon packet of the AP, etc., the overall average current is about 0.9 mA.

When data need be transmitted, the main processor awakens the wifi communication module to transmit data through sending the data, and the wifi communication module controls the wifi connection indicator lamp to light at the moment.

Further, in this embodiment, the battery pack further includes a power module, a charging unit, a discharging unit, and an SOC power management unit, where the power module includes a power source formed by connecting 4 wide temperature 18650 lithium batteries (2500mAh) in series; the SOC power management unit is connected with the processor, the charging unit, the discharging unit and the display, the charging unit is connected with the power supply, and the discharging unit and the SOC power management unit are connected with the processor.

The SOC power management unit is the core of the whole power system and mainly receives the control of the main processor and coordinates and controls the work of each module.

The charging unit is mainly responsible for charging the lithium battery. In this scheme, the charging unit employs a Liner's LTC4006 chip, which is a complete constant current/constant voltage charger controller for multiple lithium batteries, which employs few external components and is built in a small package, and the PWM controller employs a synchronous, quasi-constant frequency, constant turn-off time architecture.

The discharge unit is mainly responsible for providing power supply for the controller. The discharge unit employs a wide input voltage range, current mode DC/DC controller LT3757 of Linear, which is capable of generating either a positive or negative output voltage. LT3757 drives a low-side external N-channel power MOSFET from an internal 7.2V regulated power supply. The fixed frequency, current mode architecture achieves stable operation over a wide range of supply and output voltages. The operating frequency of LT3757 is set to 300 KHz. LT3757 is well suited for battery powered systems due to having a minimum operating supply voltage of 2.9V and a low off-state quiescent current (<1 μ Α). Meanwhile, since LT3757 has soft start and frequency foldback functions for limiting inductor current during start-up and output short circuits, load transient performance is effectively improved.

Further, in the scheme, in order to ensure the charging safety, a temperature sensor is connected between the power supply and the charging unit in series. The temperature sensors comprise 2 groups of board-mounted temperature sensors and 1 group of battery pack internal temperature sensor, and when the temperature sensors detect that the charging temperature range exceeds 5-50 ℃, the SOC power supply management unit controls the charging unit to stop charging.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A handheld device for accessing 433MHz wireless data by utilizing a wifi signal is characterized by comprising a conversion device and a handheld device, wherein the conversion device is connected with the handheld device through wifi; conversion equipment includes the casing, inside wifi communication module, 433MHz wireless communication module, treater, memory and the power module of being provided with of casing, the treater with wifi communication module 433MHz wireless communication module the memory and the power module is connected.

2. The handheld device for accessing 433MHz wireless data by using wifi signal as claimed in claim 1, wherein said power module comprises a power supply, a charging unit, a discharging unit and a SOC power management unit; the SOC power management unit is connected with the processor, the charging unit and the discharging unit, the charging unit is connected with the power supply, and the discharging unit is connected with the processor.

3. The handheld device for accessing 433MHz wireless data by using wifi signal as claimed in claim 2, further comprising a temperature sensor, wherein said temperature sensor is connected in series between said power source and said charging unit.

4. The handheld device of claim 3, further comprising a display, wherein the display is disposed outside the housing and connected to the processor and the SOC power management unit.

5. The handheld device for accessing 433MHz wireless data by using wifi signal according to any of claims 1-4, further comprising a plurality of LED lamps, said LED lamps are disposed outside said housing and connected to said processor or said wifi communication module inside said housing.

6. The handheld device for accessing 433MHz wireless data by using wifi signal as claimed in claim 1, wherein the model of the wifi communication module is: ESP-WROOM-02.

7. The handheld device for accessing 433MHz wireless data by using wifi signal as claimed in claim 1, wherein the type of said processor is: STM32F107RCT 6.