CN206819343U - A kind of serial server device based on universal serial bus - Google Patents
A kind of serial server device based on universal serial bus Download PDFInfo
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- CN206819343U CN206819343U CN201720601298.0U CN201720601298U CN206819343U CN 206819343 U CN206819343 U CN 206819343U CN 201720601298 U CN201720601298 U CN 201720601298U CN 206819343 U CN206819343 U CN 206819343U
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Abstract
The utility model discloses a kind of serial server device based on universal serial bus, it is characterized in that including power input terminal, power module, isolation circuit module, serial communication circuit module, serial ports access terminal, control module, serial bus communication circuit module and bus access terminal；The control module, isolation circuit module, serial communication circuit module, serial ports access terminal are sequentially connected；The power input terminal, power module and control module are sequentially connected；Bus access terminal, serial bus communication circuit module and the control module are sequentially connected；The power module is also connected with serial bus communication circuit module；The serial ports access terminal is used to connect serial equipment.The beneficial effect that the utility model is reached：The present apparatus can the installation of guide rail support formula and rack installation, cost is cheap, and stiffness of system is high, and easy to use, power ＆ environment supervision main frame can be expansible 4 road serial ports by universal serial bus CAN easy configurations.
Description
Technical field
A kind of serial server device based on universal serial bus is the utility model is related to, belongs to serial equipment technical field.
Background technology
At present, power and environmental monitoring system are fitted with enterprise machine room or industry spot, power is supervised with environment
It is usually CAN or RS485/232 that main frame, which is controlled, with the interface that sensor and smart machine dock, when smart machine quantity in computer room
, it is necessary to increase a new monitoring host computer newly when excessively having exceeded the serial ports number that monitoring host computer itself carries, such center monitoring
Solution cost improves, while multiple main frames upload data, improves the data pressure of network management platform.
Existing serial server is all that TCP turns serial ports in the market, and common power ＆ environment supervision system is not descending
Network interface, it can not be power ＆ environment supervision Host Extensions serial ports to cause common serial server.
Utility model content
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of serial ports clothes based on universal serial bus
Business device device, low cost, easily extends, is easy to install.
In order to realize above-mentioned target, the utility model adopts the following technical scheme that：
A kind of serial server device based on universal serial bus, it is characterized in that, including power input terminal, power module,
Isolation circuit module, serial communication circuit module, serial ports access terminal, control module, serial bus communication circuit module and total
Line accesses terminal；
The control module, isolation circuit module, serial communication circuit module, serial ports access terminal are sequentially connected；
The power input terminal, power module and control module are sequentially connected；
Bus access terminal, serial bus communication circuit module and the control module are sequentially connected；
The power module is also connected with serial bus communication circuit module；
The power input terminal provides power input；The power module is total described in power supply needed for each module assignment
Line interface terminal is used to connect extraneous machine；The serial ports access terminal is used to connect serial equipment.
Further, it is additionally provided with optocoupler TLP2362 between the serial bus communication circuit module and control module.
Further, the control module uses single-chip microcomputer.
Further, the single-chip microcomputer selects STM32F103VC 100 pin models.
Further, the power input terminal uses plug-in green terminal of the 3Pin spacing for 3.5mm, terminal numbering
Order is Vin+, PE, Vin-.
Further, the bus access terminal is from the plug-in green terminal that 2Pin spacing is 3.5mm, terminal numbering
Order is CANL, CANH.
Further, the serial bus communication circuit module uses CAN, and the chip model of CAN is
TJA1040, terminals side series impedance resistance are 10 Ω, and parallel impedance is 120 Ω, between bus CANL and CAHH and GND respectively
It is provided with 47pF filter capacitor.
Further, the isolation circuit module uses optocoupler TLP2362；The isolation circuit module front end is control mould
Block power-supply system, optocoupler rear end are serial communication circuit modular power system, and isolation signals are Transistor-Transistor Logic level signal.
Further, the serial communication circuit module includes RS232 chips and RS485 chips；Wherein, the serial ports
RS232 chips select SP3232EEY, and the series impedance for receiving signal and transmission signal is 33 Ω, and boost capacitor is 0.1uF ceramics
Electric capacity；The RS485 chips select SN75LBC184, and its output signal A and B pull-up and pull down resistor are 1K, parallel impedance
For 120 Ω, filter capacitor 47pF；The receiving and transmitting signal of the RS232 chips and RS485 chips is by or with door
SN74AHCT1G08DCK connections.
Further, the serial ports incoming end attached bag includes 4 tunnels, per road terminal from the plug-in that 2Pin spacing is 3.5mm
Green terminal, terminal number order are R/A, T/B, G.
The beneficial effect that the utility model is reached：The present apparatus can the installation of guide rail support formula and rack installation, cost is low
Honest and clean, stiffness of system is high, easy to use, and power ＆ environment supervision main frame can be expansible 4 road string by universal serial bus CAN easy configurations
Mouthful.
Brief description of the drawings
Fig. 1 is the structural representation of the present apparatus.
The implication of reference in figure：
1- power input terminals, 2- power modules, 3- isolation circuit modules, 4- serial communication circuit modules, 5- serial ports connect
Enter terminal, 6- control modules, 7- serial bus communication circuit modules, 8- buses access terminal.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and the scope of protection of the utility model can not be limited with this.
The present apparatus includes power input terminal, power module, isolation circuit module, serial communication circuit module, serial ports and connect
Enter terminal, control module, serial bus communication circuit module and bus access terminal.Specific annexation is as shown in Figure 1.
Control module uses single-chip microcomputer in the present embodiment, preferably STM32F103VC 100 pin models, hereinafter referred to as
MCU。
Illustrated with reference to embodiment：
Input of the power input terminal as system power supply, 9-30VDC is supported, is provided for whole serial server device
Power supply, for terminal from the plug-in green terminal that 3Pin spacing is 3.5mm, terminal number order is Vin+, PE, Vin-.
Power module provides power supply for modules in whole system, and power module is divided into three parts.Part I is
The first order access of power supply, chip select MC34063, input voltage 9-30V, output voltage+5VCC, outputting inductance 220uH,
Output capacitance is 10uF/10V, ripple 20mVDC,；Part II provides working power for system signal part, uses integrated electricity
Source chip XC6206P332MR, input voltage+5VCC, output voltage+3.3VCC, output maximum current 200mA；Part III is
The communication module of system provides insulating power supply, using integrated circuit ZY-0505FM-1W, input voltage+5V, output voltage+
5VDD, isolation voltage 1KV.
MCU selects STM32F103VC 100 pin models, and MCU needs+3VCC power supplies, using external passive 8M crystal oscillators, made
It is whole as serial bus interface, the BOOT0 and BOOT1 of system by the use of MCU 4 road serial ports as extended serial port, 1 road CAN interface
Low level is arranged to, MCU additional hardware house dog MAX706R, is connected to MCU NRST pins, can when system software crashes
Adjust and MCU is resetted by hardware watchdog.
Bus access terminal is the hardware interface that external bus connects serial server, and terminal is from 2Pin spacing
3.5mm plug-in green terminal, terminal number order are CANL, CANH, and this terminal and power input terminal spacing are 5mm,
With avoiding misinsertion.
Serial bus communication circuit module is serial server bus terminal and MCU passage, serial bus communication circuit
For the CAN chips that module uses for TJA1040, terminals side series impedance resistance is 10 Ω, and parallel impedance is 120 Ω, bus CANL
There is 47pF filter capacitor between CAHH and GND.
Connected between TJA1040 and MCU by optocoupler TLP2362, optocoupler can be adjusted to TJA1040 TX and RX signals
It is whole, improve signal integrity.
Channel isolation of the isolation circuit module between MCU and extended serial port telecommunication circuit, isolation circuit module realize MCU
With the electrical isolation of outside serial ports system, ensure system not by outside serial equipment electromagnetic interference influence.Isolation circuit is mainly adopted
Make and isolate of optocoupler TLP2362, optocoupler front end is MCU power-supply systems, and optocoupler rear end is serial communication power-supply system, isolation signals
For Transistor-Transistor Logic level signal.
Serial communication circuit module is the change-over circuit of rs 232 serial interface signal and Transistor-Transistor Logic level signal, and its power-supply system is led to for serial ports
Believe power supply, serial ports RS232 chips select SP3232EEY, support the transmitting-receiving of two-way serial ports, receive signal and send the series connection of signal
Impedance is 33 Ω, and boost capacitor is 0.1uF ceramic condensers；RS485 chips select that SN75LBC184's, its output signal A and B is upper
Draw and pull down resistor is 1K, parallel impedance is 120 Ω, filter capacitor 47pF.The transmitting-receiving letter of RS232 chips and RS485 chips
Number it is connected by or with door SN74AHCT1G08DCK, ensures that RS232 and RS485 two paths are received and dispatched parallel.
Serial ports access terminal is the interface that serial server is connected with smart machine, and totally 4 tunnel, is selected between 2Pin per road terminal
Away from the plug-in green terminal for 3.5mm, terminal number order is R/A, T/B, G, and RS232 is regarded in use, using R in port,
Tri- terminals of T, G, port is as RS485 in use, using A, two terminals of B.Serial ports incoming end can be set in internal toggle switch
It is sub to be connected with internal RS232 or RS485 telecommunication circuits, accomplish RS232 and RS485 switchings.
In use, system is connected to distance host by EBI terminal, terminal and serial equipment are accessed by serial ports
Connection, MCU access terminal with bus by bus communication circuitry and connected, connect by serial communication circuit and isolation circuit with serial ports
Enter terminal connection, serial server can could support up 4 road serial ports, can configure the parameter of 4 road serial ports by universal serial bus and enable
Situation, configuration finish, and universal serial bus can carry out data transparent transmission with every road serial ports.Have between MCU and serial communication short circuit logical
Believe isolation circuit, avoid serial ports front stage from electrical Interference being present, serial ports supports RS232 and RS485 two ways, can pass through dial-up
Switching.Device can the installation of guide rail support formula and rack installation, cost is cheap, and stiffness of system is high, easy to use, power ＆ environment supervision
Main frame can be expansible 4 road serial ports by universal serial bus CAN easy configurations.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of serial server device based on universal serial bus, it is characterized in that, including power input terminal, power module, every
From circuit module, serial communication circuit module, serial ports access terminal, control module, serial bus communication circuit module and bus
Access terminal；
The control module, isolation circuit module, serial communication circuit module, serial ports access terminal are sequentially connected；
The power input terminal, power module and control module are sequentially connected；
Bus access terminal, serial bus communication circuit module and the control module are sequentially connected；
The power module is also connected with serial bus communication circuit module；
The power input terminal provides power input；The power module is that bus described in power supply needed for each module assignment connects
Mouth terminal is used to connect extraneous machine；The serial ports access terminal is used to connect serial equipment.
2. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, it is described serial total
Optocoupler TLP2362 is additionally provided between line communication circuit module and control module.
3. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the control mould
Block uses single-chip microcomputer.
4. a kind of serial server device based on universal serial bus according to claim 3, it is characterized in that, the single-chip microcomputer
From STM32F103VC 100 pin models.
5. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the power supply is defeated
Enter the plug-in green terminal that terminal uses 3Pin spacing as 3.5mm, terminal number order is Vin+, PE, Vin-.
6. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the bus connects
Enter terminal from the plug-in green terminal that 2Pin spacing is 3.5mm, terminal number order is CANL, CANH.
7. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, it is described serial total
Line communication circuit module uses CAN, and the chip model of CAN is TJA1040, and terminals side series impedance resistance is 10
Ω, parallel impedance are 120 Ω, and 47pF filter capacitor is respectively arranged between bus CANL and CAHH and GND.
8. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the isolation electricity
Road module uses optocoupler TLP2362；The isolation circuit module front end is control module power-supply system, and optocoupler rear end leads to for serial ports
Believe circuit module power-supply system, isolation signals are Transistor-Transistor Logic level signal.
9. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the serial ports leads to
Letter circuit module includes RS232 chips and RS485 chips；Wherein, the serial ports RS232 chips select SP3232EEY, receive letter
Number and send signal series impedance be 33 Ω, boost capacitor is 0.1uF ceramic condensers；The RS485 chips are selected
SN75LBC184, its output signal A and B pull-up and pull down resistor are 1K, and parallel impedance is 120 Ω, filter capacitor 47pF；
The receiving and transmitting signal of the RS232 chips and RS485 chips is connected by or with door SN74AHCT1G08DCK.
10. a kind of serial server device based on universal serial bus according to claim 1, it is characterized in that, the serial ports
Incoming end attached bag includes 4 tunnels, and per road terminal from the plug-in green terminal that 2Pin spacing is 3.5mm, terminal number order is R/
A, T/B, G.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720601298.0U CN206819343U (en) | 2017-05-26 | 2017-05-26 | A kind of serial server device based on universal serial bus |
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| CN201720601298.0U CN206819343U (en) | 2017-05-26 | 2017-05-26 | A kind of serial server device based on universal serial bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827350A (en) * | 2018-07-03 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of CAN bus based more rotary transformer decoding apparatus |
-
2017
- 2017-05-26 CN CN201720601298.0U patent/CN206819343U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827350A (en) * | 2018-07-03 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of CAN bus based more rotary transformer decoding apparatus |
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