CN107918333A - A kind of safety monitoring system based on 485 bus transfers of RS - Google Patents
A kind of safety monitoring system based on 485 bus transfers of RS Download PDFInfo
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- CN107918333A CN107918333A CN201711477756.5A CN201711477756A CN107918333A CN 107918333 A CN107918333 A CN 107918333A CN 201711477756 A CN201711477756 A CN 201711477756A CN 107918333 A CN107918333 A CN 107918333A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- Automation & Control Theory (AREA)
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Abstract
The present invention relates to a kind of safety monitoring system based on 485 bus transfers of RS, it is characterized in that, including bottom sensor, the bottom sensor is connected to ARM microcontroller by 485 bus transmitter circuits of RS, the ARM microcontroller is connected to repeater, and repeater is connected to control terminal by light Ethernet；The ARM microcontroller is STM32F microcontrollers；485 bus transmitter circuits of RS include：First isolation RS 485 transceiver and the second isolation RS 485 transceiver, the first isolation RS 485 transceiver and the second isolation RS 485 transceiver are RSM485PHT isolation RS 485 transceivers.
Description
Technical field
The invention belongs to safety monitoring technology field, and in particular to a kind of security monitoring system based on RS-485 bus transfers
System.
Background technology
In the prior art, the digitized degree of coal mine safety monitoring system equipment is relatively low, and especially sensor is using simulation
Transmission technology, monitoring data poor reliability.Monitoring system electromagnetism interference is weaker.Downhole electromagnetic bad environments, monitoring system
Equipment is often subject to strong electromagnetic, and monitoring device does not possess anti-electromagnetic interference capability generally, easily makes data corruption, produces
Emit big number, false alarm, wrong diagnosis electrical phenomena.This is in place of the deficiencies in the prior art.
Therefore, for drawbacks described above of the prior art, there is provided a kind of safety prison based on RS-485 bus transfers of design
Control system；To solve drawbacks described above of the prior art, it is necessary.
The content of the invention
It is an object of the present invention in view of the above-mentioned drawbacks of the prior art, offer design is a kind of total based on RS-485
The safety monitoring system of line transmission, to solve above-mentioned technical problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of safety monitoring system based on RS-485 bus transfers, it is characterised in that including bottom sensor, the bottom
Sensor is connected to ARM microcontroller by RS-485 bus transmitter circuits, and the ARM microcontroller is connected to repeater,
Repeater is connected to control terminal by light Ethernet；The ARM microcontroller is STM32F microcontrollers；
The RS-485 bus transmitter circuits include：
First isolation RS 485 transceiver and the second isolation RS 485 transceiver, the first isolation RS 485 transceiver and second
Isolation RS 485 transceiver is RSM485PHT isolation RS 485 transceivers；
The RXD pins of first isolation RS 485 transceiver are connected to the PA10 pins of ARM microcontroller, the transmitting-receiving of the first isolation RS 485
The TXD pins of device are connected to the PA9 pins of ARM microcontroller, the GND pin ground connection of the first isolation RS 485 transceiver, first every
VCC pin from RS485 transceivers connects VCC ends, is provided between the GND pin and VCC pin of the first isolation RS 485 transceiver
Capacitance C1, the VO pins of the first isolation RS 485 transceiver are connected to A pins by resistance R1；
The B pins of first isolation RS 485 transceiver connect RS485 bus Bs 1, and electricity is disposed with the RS485 bus Bs 1
Hinder R3, the first end of magnetic bead L1 and magnetic bead L2, resistance R3 connect the B pins of the first isolation RS 485 transceiver, the of resistance R3
Two ends are connected to the first end of magnetic bead L1, and the second end of magnetic bead L1 is connected to the first end of magnetic bead L2, and the second end of magnetic bead L2 connects
It is connected to bottom sensor；
Electricity is disposed with A pins connection RS485 the buses A1, the RS485 buses A1 of first isolation RS 485 transceiver
Hinder R4, the first end of magnetic bead L3 and magnetic bead L4, resistance R4 connect the A pins of the first isolation RS 485 transceiver, the of resistance R4
Two ends are connected to the first end of magnetic bead L3, and the second end of magnetic bead L3 is connected to the first end of magnetic bead L4, and the second end of magnetic bead L4 connects
It is connected to bottom sensor；
Resistance R2 is provided between the B pins and RGND pins of first isolation RS 485 transceiver；
The first TVS diode, B pins and RGND pins are provided between the B pins and A pins of first isolation RS 485 transceiver
Between be provided with the second TVS diode, the 3rd TVS diode is provided between A pins and RNG pins；
The RGND pins of first isolation RS 485 transceiver are connected with ground wire, the signal ground of connecting wires；
First gas discharge tube is additionally provided between the RS485 bus Bs 1 and RS485 buses A1, first gas discharge tube
First end is connected to the second end of magnetic bead L2, and the second end of first gas discharge tube is connected to the second end of magnetic bead L4；
The RXD pins of second isolation RS 485 transceiver are connected to the PA3 pins of ARM microcontroller, the transmitting-receiving of the second isolation RS 485
The TXD pins of device are connected to the PA2 pins of ARM microcontroller, the GND pin ground connection of the second isolation RS 485 transceiver, second every
VCC pin from RS485 transceivers connects VCC ends, is provided between the GND pin and VCC pin of the second isolation RS 485 transceiver
Capacitance C3, the VO pins of the second isolation RS 485 transceiver are connected to A pins by resistance R6；
The B pins of second isolation RS 485 transceiver connect RS485 bus Bs 2, and electricity is disposed with the RS485 bus Bs 2
Hinder R8, the first end of magnetic bead L5 and magnetic bead L6, resistance R8 connect the B pins of the second isolation RS 485 transceiver, the of resistance R8
Two ends are connected to the first end of magnetic bead L5, and the second end of magnetic bead L5 is connected to the first end of magnetic bead L6, and the second end of magnetic bead L6 connects
It is connected to bottom sensor；
Electricity is disposed with A pins connection RS485 the buses A2, the RS485 buses A2 of second isolation RS 485 transceiver
Hinder R9, the first end of magnetic bead L7 and magnetic bead L8, resistance R9 connect the A pins of the second isolation RS 485 transceiver, the of resistance R9
Two ends are connected to the first end of magnetic bead L7, and the second end of magnetic bead L7 is connected to the first end of magnetic bead L8, and the second end of magnetic bead L8 connects
It is connected to bottom sensor；
Resistance R7 is provided between the B pins and RGND pins of second isolation RS 485 transceiver；
The 4th TVS diode, B pins and RGND pins are provided between the B pins and A pins of second isolation RS 485 transceiver
Between be provided with the 5th TVS diode, the 6th TVS diode is provided between A pins and RNG pins；
The RGND pins of second isolation RS 485 transceiver are connected with ground wire, the signal ground of connecting wires；
Second gas discharge tube is additionally provided between the RS485 bus Bs 2 and RS485 buses A2, second gas discharge tube
First end is connected to the second end of magnetic bead L6, and the second end of second gas discharge tube is connected to the second end of magnetic bead L8.
Preferably, the VCC ends are 5 volts of voltage ends.
The beneficial effects of the present invention are improve the anti-interference of RS485 bus transfers, reduce and go out in data transmission procedure
The probability of line mistake, improves the quality monitoring of whole safety monitoring system.In addition, design principle of the present invention is reliable, it is simple in structure,
With very extensive application prospect.
It can be seen from the above that compared with prior art, the present invention improving with prominent substantive distinguishing features and significantly, it is implemented
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of safety monitoring system based on RS-485 bus transfers provided by the invention.
Wherein, 1- bottom sensors, 2-ARM microcontrollers, 3- repeaters, 4- control terminals, the first isolation RS 485s of 5- are received
Hair device, 6- the second isolation RS 485 transceivers, the first TVS diodes of 7-, the second TVS diodes of 8-, the 3rd TVS diodes of 9-,
10- is grounded, 12- first gas discharge tubes, the 4th TVS diodes of 13-, the 5th TVS diodes of 14-, bis- poles of the 6th TVS of 15-
Pipe, 16- second gas discharge tubes.
Embodiment
Below in conjunction with the accompanying drawings and the present invention will be described in detail by specific embodiment, and following embodiments are to the present invention
Explanation, and the invention is not limited in implementation below.
As shown in Figure 1, a kind of safety monitoring system based on RS-485 bus transfers provided by the invention, its feature exist
In, including bottom sensor 1, the bottom sensor 1 be connected to ARM microcontroller 2 by RS-485 bus transmitter circuits,
The ARM microcontroller 2 is connected to repeater 3, and repeater 3 is connected to control terminal 4 by light Ethernet；Described
ARM microcontroller 2 is STM32F microcontrollers；
The RS-485 bus transmitter circuits include：
First isolation RS 485 transceiver 5 and the second isolation RS 485 transceiver 6, the first isolation RS 485 transceiver 5 and
Two isolation RS 485 transceivers 6 are RSM485PHT isolation RS 485 transceivers；
The RXD pins of first isolation RS 485 transceiver 5 are connected to the PA10 pins of ARM microcontroller 2, and the first isolation RS 485 is received
The TXD pins of hair device 5 are connected to the PA9 pins of ARM microcontroller 2, and the GND pin of the first isolation RS 485 transceiver 5 is grounded,
The VCC pin of first isolation RS 485 transceiver 5 connects VCC ends, the GND pin and VCC pin of the first isolation RS 485 transceiver 5 it
Between be provided with capacitance C1, the VO pins of the first isolation RS 485 transceiver 5 are connected to A pins by resistance R1；
The B pins of first isolation RS 485 transceiver 5 connect RS485 bus Bs 1, are disposed with the RS485 bus Bs 1
Resistance R3, magnetic bead L1 and magnetic bead L2, the first end of resistance R3 connect the B pins of the first isolation RS 485 transceiver 5, resistance R3
Second end be connected to the first end of magnetic bead L1, the second end of magnetic bead L1 is connected to the first end of magnetic bead L2, the second of magnetic bead L2
End is connected to bottom sensor 1；
It is disposed with A pins connection RS485 the buses A1, the RS485 buses A1 of first isolation RS 485 transceiver 5
Resistance R4, magnetic bead L3 and magnetic bead L4, the first end of resistance R4 connect the A pins of the first isolation RS 485 transceiver, resistance R4's
Second end is connected to the first end of magnetic bead L3, and the second end of magnetic bead L3 is connected to the first end of magnetic bead L4, the second end of magnetic bead L4
It is connected to bottom sensor 1；
Resistance R2 is provided between the B pins and RGND pins of first isolation RS 485 transceiver 5；
The first TVS diode 7 is provided between the B pins and A pins of first isolation RS 485 transceiver 5, B pins draw with RGND
The second TVS diode 8 is provided between foot, the 3rd TVS diode 9 is provided between A pins and RNG pins；
The RGND pins of first isolation RS 485 transceiver 5 are connected with ground wire 10,10 signal grounds of connecting wires；
First gas discharge tube 12, first gas discharge tube are additionally provided between the RS485 bus Bs 1 and RS485 buses A1
12 first end is connected to the second end of magnetic bead L2, and the second end of first gas discharge tube 12 is connected to the second end of magnetic bead L4；
The RXD pins of second isolation RS 485 transceiver 6 are connected to the PA3 pins of ARM microcontroller 2, and the second isolation RS 485 is received
The TXD pins of hair device 6 are connected to the PA2 pins of ARM microcontroller 2, and the GND pin of the second isolation RS 485 transceiver 6 is grounded,
The VCC pin of second isolation RS 485 transceiver 6 connects VCC ends, the GND pin and VCC pin of the second isolation RS 485 transceiver 6 it
Between be provided with capacitance C3, the VO pins of the second isolation RS 485 transceiver 6 are connected to A pins by resistance R6；
The B pins of second isolation RS 485 transceiver 6 connect RS485 bus Bs 2, are disposed with the RS485 bus Bs 2
Resistance R8, magnetic bead L5 and magnetic bead L6, the first end of resistance R8 connect the B pins of the second isolation RS 485 transceiver 6, resistance R8
Second end be connected to the first end of magnetic bead L5, the second end of magnetic bead L5 is connected to the first end of magnetic bead L6, the second of magnetic bead L6
End is connected to bottom sensor 1；
It is disposed with A pins connection RS485 the buses A2, the RS485 buses A2 of second isolation RS 485 transceiver 6
Resistance R9, magnetic bead L7 and magnetic bead L8, the first end of resistance R9 connect the A pins of the second isolation RS 485 transceiver, resistance R9's
Second end is connected to the first end of magnetic bead L7, and the second end of magnetic bead L7 is connected to the first end of magnetic bead L8, the second end of magnetic bead L8
It is connected to bottom sensor 1；
Resistance R7 is provided between the B pins and RGND pins of second isolation RS 485 transceiver 6；
The 4th TVS diode 13 is provided between the B pins and A pins of second isolation RS 485 transceiver 6, B pins draw with RGND
The 5th TVS diode 14 is provided between foot, the 6th TVS diode 15 is provided between A pins and RNG pins；
The RGND pins of second isolation RS 485 transceiver 6 are connected with ground wire 10,10 signal grounds of connecting wires；
Second gas discharge tube 16, second gas discharge tube are additionally provided between the RS485 bus Bs 2 and RS485 buses A2
16 first end is connected to the second end of magnetic bead L6, and the second end of second gas discharge tube 16 is connected to the second end of magnetic bead L8.
In the present embodiment, the VCC ends are 5 volts of voltage ends.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this area
What technical staff can think does not have creative change, and some improvement made without departing from the principles of the present invention and
Retouching, should all be within the scope of the present invention.
Claims (2)
1. a kind of safety monitoring system based on RS-485 bus transfers, it is characterised in that including bottom sensor（1）, it is described
Bottom sensor（1）ARM microcontroller is connected to by RS-485 bus transmitter circuits（2）, the ARM microcontroller
（2）It is connected to repeater（3）, repeater（3）Control terminal is connected to by light Ethernet（4）；The ARM microcontroller
（2）For STM32F microcontrollers；
The RS-485 bus transmitter circuits include：
First isolation RS 485 transceiver（5）With the second isolation RS 485 transceiver（6）, the first isolation RS 485 transceiver
（5）With the second isolation RS 485 transceiver（6）It is RSM485PHT isolation RS 485 transceivers；
First isolation RS 485 transceiver（5）RXD pins be connected to ARM microcontroller（2）PA10 pins, first isolation
RS485 transceivers（5）TXD pins be connected to ARM microcontroller（2）PA9 pins, the first isolation RS 485 transceiver（5）'s
GND pin is grounded, the first isolation RS 485 transceiver（5）VCC pin connect VCC ends, the first isolation RS 485 transceiver（5）'s
Capacitance C1, the first isolation RS 485 transceiver are provided between GND pin and VCC pin（5）VO pins connected by resistance R1
To A pins；
First isolation RS 485 transceiver（5）B pins connection RS485 bus Bs 1, set gradually in the RS485 bus Bs 1
There are resistance R3, magnetic bead L1 and magnetic bead L2, the first end of resistance R3 connects the first isolation RS 485 transceiver（5）B pins, electricity
The second end of resistance R3 is connected to the first end of magnetic bead L1, and the second end of magnetic bead L1 is connected to the first end of magnetic bead L2, magnetic bead L2's
Second end is connected to bottom sensor（1）；
First isolation RS 485 transceiver（5）A pins connection RS485 buses A1, the RS485 buses A1 on set gradually
There are resistance R4, magnetic bead L3 and magnetic bead L4, the first end of resistance R4 connects the A pins of the first isolation RS 485 transceiver, resistance R4
Second end be connected to the first end of magnetic bead L3, the second end of magnetic bead L3 is connected to the first end of magnetic bead L4, the second of magnetic bead L4
End is connected to bottom sensor（1）；
First isolation RS 485 transceiver（5）B pins and RGND pins between be provided with resistance R2；
First isolation RS 485 transceiver（5）B pins and A pins between be provided with the first TVS diode（7）, B pins with
The second TVS diode is provided between RGND pins（8）, the 3rd TVS diode is provided between A pins and RNG pins（9）；
First isolation RS 485 transceiver（5）RGND pins be connected with ground wire（10）, described connects wires（10）Signal connects
Ground；
First gas discharge tube is additionally provided between the RS485 bus Bs 1 and RS485 buses A1（12）, first gas electric discharge
Pipe（12）First end be connected to the second end of magnetic bead L2, first gas discharge tube（12）Second end be connected to the of magnetic bead L4
Two ends；
Second isolation RS 485 transceiver（6）RXD pins be connected to ARM microcontroller（2）PA3 pins, second isolation
RS485 transceivers（6）TXD pins be connected to ARM microcontroller（2）PA2 pins, the second isolation RS 485 transceiver（6）'s
GND pin is grounded, the second isolation RS 485 transceiver（6）VCC pin connect VCC ends, the second isolation RS 485 transceiver（6）'s
Capacitance C3, the second isolation RS 485 transceiver are provided between GND pin and VCC pin（6）VO pins connected by resistance R6
To A pins；
Second isolation RS 485 transceiver（6）B pins connection RS485 bus Bs 2, set gradually in the RS485 bus Bs 2
There are resistance R8, magnetic bead L5 and magnetic bead L6, the first end of resistance R8 connects the second isolation RS 485 transceiver（6）B pins, electricity
The second end of resistance R8 is connected to the first end of magnetic bead L5, and the second end of magnetic bead L5 is connected to the first end of magnetic bead L6, magnetic bead L6's
Second end is connected to bottom sensor（1）；
Second isolation RS 485 transceiver（6）A pins connection RS485 buses A2, the RS485 buses A2 on set gradually
There are resistance R9, magnetic bead L7 and magnetic bead L8, the first end of resistance R9 connects the A pins of the second isolation RS 485 transceiver, resistance R9
Second end be connected to the first end of magnetic bead L7, the second end of magnetic bead L7 is connected to the first end of magnetic bead L8, the second of magnetic bead L8
End is connected to bottom sensor（1）；
Second isolation RS 485 transceiver（6）B pins and RGND pins between be provided with resistance R7；
Second isolation RS 485 transceiver（6）B pins and A pins between be provided with the 4th TVS diode（13）, B pins with
The 5th TVS diode is provided between RGND pins（14）, the 6th TVS diode is provided between A pins and RNG pins
（15）；
Second isolation RS 485 transceiver（6）RGND pins be connected with ground wire（10）, described connects wires（10）Signal connects
Ground；
Second gas discharge tube is additionally provided between the RS485 bus Bs 2 and RS485 buses A2（16）, second gas electric discharge
Pipe（16）First end be connected to the second end of magnetic bead L6, second gas discharge tube（16）Second end be connected to the of magnetic bead L8
Two ends.
2. a kind of safety monitoring system based on RS-485 bus transfers according to claim 1, it is characterised in that described
VCC ends be 5 volts of voltage ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477756.5A CN107918333A (en) | 2017-12-29 | 2017-12-29 | A kind of safety monitoring system based on 485 bus transfers of RS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477756.5A CN107918333A (en) | 2017-12-29 | 2017-12-29 | A kind of safety monitoring system based on 485 bus transfers of RS |
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| CN107918333A true CN107918333A (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711477756.5A Pending CN107918333A (en) | 2017-12-29 | 2017-12-29 | A kind of safety monitoring system based on 485 bus transfers of RS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110960189A (en) * | 2019-09-12 | 2020-04-07 | 中国人民解放军陆军特色医学中心 | Wireless cognitive regulator and eye movement treatment and treatment effect evaluation method |
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| CN110960189A (en) * | 2019-09-12 | 2020-04-07 | 中国人民解放军陆军特色医学中心 | Wireless cognitive regulator and eye movement treatment and treatment effect evaluation method |
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