CN206788603U

CN206788603U - A kind of development board of diversified interface

Info

Publication number: CN206788603U
Application number: CN201720512304.5U
Authority: CN
Inventors: 姜利娜; 周海丽
Original assignee: Qingdao Zetu Electronic Technology Co Ltd
Current assignee: Qingdao Zetu Electronic Technology Co Ltd
Priority date: 2017-05-10
Filing date: 2017-05-10
Publication date: 2017-12-22
Anticipated expiration: 2027-05-10

Abstract

A kind of development board of diversified interface, including single-chip minimum system unit, power circuit, function module circuit and interface module circuit are the utility model is related to, development board is provided with several conversion terminals electrically connected respectively with the I/O of the single-chip microcomputer；RS232 telecommunication circuits include electrical level transferring chip MAX232, and development board is provided with the RS232 nines kinds of needles joint and KF25 interfaces electrically connected with electrical level transferring chip MAX232；The port switching for switching RS232 serial communications and RS485 serial communications is additionally provided with development board.The utility model is drawn the respective pins of single-chip microcomputer by multiple conversion terminals, external equipment is connected on conversion terminal by connecting line, intuitively the annexation between external equipment and single-chip microcomputer can be shown, it is easy to user to understand the principle and annexation of electronic equipment in depth, is easy to practice to operate；Because there is provided multiple interfaces module and port switching, person easy to operation accesses various detecting elements, and flexibly switches communication modes.

Description

A kind of development board of diversified interface

Technical field

It the utility model is related to development board technical field, more particularly to a kind of development board of diversified interface.

Background technology

At present, China it is main education wound visitor application be based on Arduino increase income electronics Prototyping Platform develop, the platform is just Prompt flexibly, conveniently operation, its simple development scheme are easily grasped for beginner, can greatly save the study of developer Cost, shorten the construction cycle.But on the e-platform of this convenient operation, electrophile and designer can not be allowed to understand in depth The true principle of electronic equipment, designer can not really recognize the substantive content of electronic product, and letter is rested on to most products Single application, it is unfavorable for the practice operation of beginner and designer and studies in depth.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of development board of diversified interface, can be easy to put into practice Operate and be applied to the access of multiple functions module, and can intuitively show the annexation between various components.

In order to solve the above technical problems, the technical solution of the utility model is：A kind of development board of diversified interface, including Single-chip minimum system unit, power circuit, function module circuit and interface module circuit, the single-chip minimum system unit Including a STM32 series monolithic, the function module circuit includes jtag circuit, FLASH circuits, SD card circuit, SIM moulds Block circuit, Temperature Humidity Sensor circuit, D/A converting circuit, analog to digital conversion circuit, NRF24L01 wireless modules circuit, SX1278 Radio frequency modular circuit, GPS module circuit, key control circuit, LED circuit, power supply instruction circuit for lamp；The interface module Circuit includes RS232 telecommunication circuits, RS485 telecommunication circuits, OV2460 utilizing camera interfaces circuit, CAN interface circuit, network Interface circuit；The development board is provided with several conversion terminals electrically connected respectively with the I/O mouths of the single-chip microcomputer；It is described RS232 telecommunication circuits include electrical level transferring chip, and the development board is provided with the RS232 electrically connected with the electrical level transferring chip Nine kinds of needles joint and KF25 interfaces；It is additionally provided with the development board for switching cutting for RS232 serial communications and RS485 serial communications Port is changed, the port switching is provided with and is electrically connected respectively with the RS232 telecommunication circuits, RS485 telecommunication circuits and single-chip microcomputer The terminal connect.

As preferable technical scheme, the development board also includes the clock supply circuit of the single-chip microcomputer, the clock Power circuit includes button cell, a filter capacitor and two switching diodes of two series connection, the clock power electricity The output end on road is electrically connected to the clock power input of the single-chip microcomputer.

As preferable technical scheme, the power circuit includes power button, power supply chip LM2596, and power supply core Piece LM1117, the power supply chip LM2596 output end are electrically connected with a switching diode and filter circuit, the filtering Circuit includes an inductance connected with the output end of the power supply chip LM2596 and one and the power supply chip LM2596 The in parallel electric capacity of output end.

As preferable technical scheme, the CAN interface circuit includes high-speed CAN transceiving chip TJA1050, described High-speed CAN transceiving chip TJA1050 TXD ends and RXD ends are electrically connected to the usb data port of the single-chip microcomputer.

Also include reset key circuit as development board described in preferable technical scheme, the reset key circuit includes multiple Position button, the reset key are electrically connected to power end by pull-up resistor, and the reset key is electrically connected to the single-chip microcomputer Reset terminal.

As preferable technical scheme, the port switching electrically connects the single-chip microcomputer and the RS232 by jumper cap Telecommunication circuit or RS485 telecommunication circuits.

By adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model passes through multiple switchings Terminal draws the respective pins of single-chip microcomputer, and external equipment is connected on conversion terminal by connecting line, can intuitively by Annexation between external equipment and single-chip microcomputer is shown, is easy to user to understand principle and the connection of electronic equipment in depth Relation, it is easy to practice to operate；Due to there is provided multiple interfaces module, and RS232 communication modules and RS485 communication modules are cut Port is changed, person easy to operation accesses various detecting elements, and flexibly switches communication modes.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the theory diagram of the utility model embodiment；

Fig. 2 is the circuit theory diagrams of single-chip microcomputer；

Fig. 3 is the circuit theory diagrams of RS232 telecommunication circuits；

Fig. 4 is the circuit theory diagrams of CAN interface circuit；

Fig. 5 is the circuit theory diagrams of clock supply circuit；

Fig. 6 is the circuit theory diagrams of power circuit；

Fig. 7 is the circuit theory diagrams of reset key circuit.

Embodiment

As shown in Fig. 1 extremely figures are common, a kind of development board of diversified interface, including single-chip minimum system unit, power supply Circuit, function module circuit and interface module circuit.

Single-chip minimum system unit includes a STM32 series monolithic, and the circuit of single-chip microcomputer as illustrated in FIG. 2 is former Reason figure.

Function module circuit includes jtag circuit, FLASH circuits, SD card circuit, sim module circuit, Temperature Humidity Sensor Circuit, D/A converting circuit, analog to digital conversion circuit, NRF24L01 wireless modules circuit, SX1278 radio frequency modular circuits, GPS module circuit, key control circuit, LED circuit, power supply instruction circuit for lamp.

Interface module circuit includes RS232 telecommunication circuits, RS485 telecommunication circuits, OV2460 utilizing camera interfaces circuit, CAN Bus interface circuit, network interface circuit.

Development board is provided with several conversion terminals electrically connected respectively with the I/O mouths of single-chip microcomputer, and external equipment is by turning Connecting terminal and monolithic mechatronics.

As shown in figure 3, RS232 telecommunication circuits include electrical level transferring chip U5, electrical level transferring chip U5's is turned from level Chip MAX232 is changed, development board is provided with RS232 nine kinds of needles the joints H4 and KF25 electrically connected with electrical level transferring chip MAX232 and connect Mouth P7；The port switching P6 and P3 for switching RS232 serial communications and RS485 serial communications are additionally provided with development board, is switched Port P6 and P3 are provided with the terminal with the RS232 telecommunication circuits, RS485 telecommunication circuits and monolithic mechatronics respectively, Port switching P6 and P3 electrically connects single-chip microcomputer and RS232 telecommunication circuits or RS485 telecommunication circuits by jumper cap.

As shown in figure 4, CAN interface circuit includes high-speed CAN transceiving chip U1, high-speed CAN transceiving chip U1 type Number it is TJA1050, high-speed CAN transceiving chip TJA1050 TXD ends and RXD ends are electrically connected to the usb data port of single-chip microcomputer USB+, USB- are pin PA11 and PA12.

As shown in figure 5, development board also includes the clock supply circuit of single-chip microcomputer, what clock supply circuit was connected including two Button cell BAT1, a filter capacitor C25 and two switching diodes D1, D2, the output end V of clock supply circuit_BAT It is electrically connected to the clock power input Vref of the single-chip microcomputer.

As shown in fig. 6, power circuit includes power button SW2, power supply chip LM2596, and power supply chip LM1117, Power supply chip LM2596 output end is electrically connected with a switching diode D4 and filter circuit, and filter circuit includes one and electricity The inductance L3 and an electric capacity C37 in parallel with power supply chip LM2596 output end of source chip LM2596 output end series connection.

As shown in fig. 7, development board also includes reset key circuit, reset key circuit includes reset key SW1, and reset is pressed Key SW1 is electrically connected to 3.3V power ends by pull-up resistor R21, and reset key SW1 is electrically connected to the reset terminal of single-chip microcomputer.

The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims

1. a kind of development board of diversified interface, including single-chip minimum system unit, power circuit, function module circuit and connect Mouth modular circuit, it is characterised in that：The single-chip minimum system unit includes a STM32 series monolithic, the function Modular circuit includes jtag circuit, FLASH circuits, SD card circuit, sim module circuit, Temperature Humidity Sensor circuit, digital-to-analogue conversion Circuit, analog to digital conversion circuit, NRF24L01 wireless modules circuit, SX1278 radio frequency modular circuits, GPS module circuit, press Key control circuit, LED circuit, power supply instruction circuit for lamp；The interface module circuit includes RS232 telecommunication circuits, RS485 communicates Circuit, OV2460 utilizing camera interfaces circuit, CAN interface circuit, network interface circuit；The development board is provided with several The conversion terminal electrically connected respectively with the I/O mouths of the single-chip microcomputer；The RS232 telecommunication circuits include electrical level transferring chip, institute State development board and be provided with the RS232 nines kinds of needles joint and KF25 interfaces electrically connected with the electrical level transferring chip；On the development board Be additionally provided with the port switching for switching RS232 serial communications and RS485 serial communications, the port switching be provided with respectively with The terminal of the RS232 telecommunication circuits, RS485 telecommunication circuits and monolithic mechatronics.

A kind of 2. development board of diversified interface as claimed in claim 1, it is characterised in that：The development board also includes described The clock supply circuit of single-chip microcomputer, the clock supply circuit include two series connection button cells, a filter capacitor and Two switching diodes, the output end of the clock supply circuit are electrically connected to the clock power input of the single-chip microcomputer.

A kind of 3. development board of diversified interface as claimed in claim 1, it is characterised in that：The power circuit includes power supply Button, power supply chip LM2596, and power supply chip LM1117, the output end of the power supply chip LM2596 are electrically connected with one Switching diode and filter circuit, the filter circuit include an electricity connected with the output end of the power supply chip LM2596 Sense and an electric capacity in parallel with the output end of the power supply chip LM2596.

A kind of 4. development board of diversified interface as claimed in claim 1, it is characterised in that：The CAN interface circuit Including high-speed CAN transceiving chip TJA1050, the TXD ends and RXD ends of the high-speed CAN transceiving chip TJA1050 are electrically connected to institute State the usb data port of single-chip microcomputer.

A kind of 5. development board of diversified interface as claimed in claim 4, it is characterised in that：The development board also includes resetting Key circuit, the reset key circuit include reset key, and the reset key is electrically connected to power end by pull-up resistor, The reset key is electrically connected to the reset terminal of the single-chip microcomputer.

A kind of 6. development board of diversified interface as claimed in claim 1, it is characterised in that：The port switching passes through wire jumper Cap electrically connects the single-chip microcomputer and the RS232 telecommunication circuits or RS485 telecommunication circuits.