CN205681413U - Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit - Google Patents
Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit Download PDFInfo
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- CN205681413U CN205681413U CN201620623962.7U CN201620623962U CN205681413U CN 205681413 U CN205681413 U CN 205681413U CN 201620623962 U CN201620623962 U CN 201620623962U CN 205681413 U CN205681413 U CN 205681413U
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Abstract
The utility model discloses a kind of split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit, first end of resistance R1 is connected with power supply VCC, second end of R1 enables with the reception of isolated form transceiving chip U2 respectively and controls end RE and send enable control end DE to be connected, second end of R1 also colelctor electrode with audion Q2 is connected, the base stage of audion Q2 is connected with sending data wire TXD by R2, R2 is parallel with the emitter stage of electric capacity C8, electric capacity C8 and audion Q2 altogether on the points of common connection of audion Q2 base stage.This utility model transfer rate is fast, and capacity of resisting disturbance is strong, it is not necessary to any discrete component achieves that RS 485 communication function.Automatically control conversion by audion to send or receive, it is not necessary to take single-chip processor i/o mouth, simplify hardware designs, facilitate programming.Electric capacity C7 can play filtering decoupling effect, makes input power signal more steady.Resistance R1 plays metering function, it is to avoid input current is excessive and defective communication chip.
Description
Technical field
This utility model relates to a kind of split-type mini multifunctional concrete temperature intelligent online monitoring system RS-485 and leads to
Letter circuit.
Background technology
During concrete setting, produce the heat of hydration and make concrete temperature raise and deform and cause crack, to dam safety
Bring great hidden danger.At present, the monitoring of concrete temperature mainly uses manual type: use manual site's reading and indoor whole
Reason, the monitor mode of analysis of data so that the poor real of temperature monitoring, and have personal error, this personal error is not only
Surveyed concrete temperature value is the most artificially adjusted under the pressure of the requirement of project progress relevant with monitoring personnel, and by the skill of personnel
The factor impacts such as art level, survey measurements custom, it is impossible to show the real situation of concrete, to quality and the seat belt of dam
Carry out hidden danger.
Concrete Temperature Monitor System can substitute for Traditional Man monitoring, it is achieved the real-time monitoring of concrete temperature, effectively
Solve personal monitoring to waste time and energy, surveys and read not in time, have blind section, the problem such as personal error.In order to realize uploading of system data
Function, Concrete Temperature Monitor System needs to provide RS-485 communication interface, and traditional 485 telecommunication circuits are in order to realize sending and connecing
Conversion between receipts, communication chip needs to control foot and controls to receive or send, needs to take a single-chip processor i/o mouth more,
Hardware configuration is sufficiently complex.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of mini multifunctional concrete of split-type
Temperature intelligent online monitoring system RS-485 telecommunication circuit, transfer rate is fast, and capacity of resisting disturbance is strong, it is not necessary to any discrete component is just
RS-485 communication function can be realized；Automatically control conversion by audion to send or receive, simplify hardware designs, facilitate program
Write.
The purpose of this utility model is achieved through the following technical solutions: split-type mini multifunctional concrete temperature
Intelligent on-line monitoring system RS-485 telecommunication circuit, including isolated form transceiving chip U2, resistance R1, resistance R2, electric capacity C8 and three
The logical end power supply VDD1 and bus end power supply VDD2 of pole pipe Q2, isolated form transceiving chip U2 respectively with power supply
VCC connect, first end of resistance R1 is connected with power supply VCC, second end of resistance R1 respectively with isolated form transceiving chip U2
Reception enable and control end RE and sending and enable and control end DE and be connected, second end of resistance R1 also with the colelctor electrode phase of audion Q2
Even, the base stage of audion Q2 is connected with sending data wire TXD by resistance R2, and resistance R2 is commonly connected with audion Q2 base stage
The emitter stage of electric capacity C8, electric capacity C8 and audion Q2 it is parallel with altogether on Dian；The input/output homophase of isolated form transceiving chip U2
The input/output end of oppisite phase B that end A connects power supply VCC, isolated form transceiving chip U2 by resistance R4 is connect by resistance R3
Ground.
Split-type mini multifunctional concrete temperature intelligent online monitoring system RS-485 telecommunication circuit, also includes electric capacity
C7, one end of electric capacity C7 is connected on the points of common connection of resistance R1 and power supply VCC, other end ground connection.
Power Supply Monitoring foot one end of described isolated form transceiving chip U2 connects power supply VCC, the other end by resistance R5
By electric capacity C6 ground connection.
Described isolated form transceiving chip U2 uses ADM2483 chip.
The beneficial effects of the utility model are:
1) a kind of split-type mini multifunctional concrete temperature intelligent online monitoring system RS-485 telecommunication circuit is provided,
Transfer rate is fast, and capacity of resisting disturbance is strong, it is not necessary to any discrete component achieves that RS-485 communication function.
2) automatically control conversion by audion to send or receive, it is not necessary to take single-chip processor i/o mouth, simplify hardware and set
Meter, facilitates programming.
3) electric capacity C7 can play filtering decoupling effect, makes input power signal more steady.
4) resistance R1 can play metering function, it is to avoid the electric current of input power is excessive and defective communication chip.
Accompanying drawing explanation
Fig. 1 is this utility model circuit theory diagrams.
Detailed description of the invention
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings, but protection domain of the present utility model
It is not limited to the following stated.
As it is shown in figure 1, split-type mini multifunctional concrete temperature intelligent online monitoring system RS-485 telecommunication circuit, bag
Including isolated form transceiving chip U2, resistance R1, resistance R2, electric capacity C8 and audion Q2, isolated form transceiving chip U2 uses ADM2483
Chip, is the isolated form RS-485 transceiving chip based on its patent iCoupler Magnetic isolation technology of ADI company release, transmission speed
Rate is fast, and capacity of resisting disturbance is strong, it is not necessary to any discrete component achieves that RS-485 communication function.
The logical end power supply VDD1 and bus end power supply VDD2 of isolated form transceiving chip U2 is electric with power supply respectively
Source VCC connects, and first end of resistance R1 is connected with power supply VCC, and telecommunication circuit also includes one end of electric capacity C7, electric capacity C7 even
It is connected on the points of common connection of resistance R1 and power supply VCC, other end ground connection.Second end of resistance R1 is received with isolated form respectively
Send out chip U2 reception enable control end RE and send enable control end DE be connected, second end of resistance R1 is also with audion Q2's
Colelctor electrode is connected, and the base stage of audion Q2 is connected with sending data wire TXD by resistance R2, resistance R2 and audion Q2 base stage
The emitter stage of electric capacity C8, electric capacity C8 and audion Q2 it is parallel with altogether on points of common connection；The input of isolated form transceiving chip U2/
Output in-phase end A connects the input/output end of oppisite phase B of power supply VCC, isolated form transceiving chip U2 by electricity by resistance R4
Resistance R3 ground connection.Power Supply Monitoring foot one end of described isolated form transceiving chip U2 connects power supply VCC, the other end by resistance R5
By electric capacity C6 ground connection.
The communication truth table of ADM2483 chip is as follows:
By upper table it can be seen that after design automatic transceiving circuit transceiving data the easiest intuitively.TXD is for sending data
Line, RXD is for receiving data wire, and when single-chip microcomputer sends data, TXD exports data, and circuit can be automatically converted to transtation mission circuit.When
Single-chip microcomputer is not when sending data, and TXD can be low level always, and circuit is automatically converted to receive circuit, under reception state,
The data of RXD determine according to the difference of A line with B line.
The above is only preferred implementation of the present utility model, it should be understood that this utility model is not limited to herein
Disclosed form, is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and
Can be modified by above-mentioned teaching or the technology of association area or knowledge in contemplated scope described herein.And this area
Change that personnel are carried out and change, the most all should be in rights appended by this utility model without departing from spirit and scope of the present utility model
In the protection domain required.
Claims (4)
1. split-type mini multifunctional concrete temperature intelligent online monitoring system RS-485 telecommunication circuit, it is characterised in that: bag
Including isolated form transceiving chip U2, resistance R1, resistance R2, electric capacity C8 and audion Q2, the logical end of isolated form transceiving chip U2 supplies
Electricity power vd D1 and bus end power supply VDD2 is connected with power supply VCC respectively, first end of resistance R1 and power supply
VCC connects, and second end of resistance R1 enables with the reception of isolated form transceiving chip U2 respectively and controls end RE and send to enable and control
End DE is connected, and second end of resistance R1 also colelctor electrode with audion Q2 is connected, the base stage of audion Q2 by resistance R2 with
Sending data wire TXD to connect, resistance R2 is parallel with electric capacity C8, electric capacity C8 and audion on the points of common connection of audion Q2 base stage
The emitter stage of Q2 is altogether；The input/output in-phase end A of isolated form transceiving chip U2 connects power supply VCC by resistance R4, every
The input/output end of oppisite phase B of release transceiving chip U2 passes through resistance R3 ground connection.
Split-type the most according to claim 1 mini multifunctional concrete temperature intelligent online monitoring system RS-485 communicates
Circuit, it is characterised in that: also include that electric capacity C7, one end of electric capacity C7 are connected to the commonly connected of resistance R1 and power supply VCC
On point, other end ground connection.
Split-type the most according to claim 1 mini multifunctional concrete temperature intelligent online monitoring system RS-485 communicates
Circuit, it is characterised in that: Power Supply Monitoring foot one end of described isolated form transceiving chip U2 connects power supply by resistance R5
VCC, the other end passes through electric capacity C6 ground connection.
4. according to the mini multifunctional concrete temperature intelligent online monitoring system of the split-type according to any one of claim 1-3
RS-485 telecommunication circuit, it is characterised in that: described isolated form transceiving chip U2 uses ADM2483 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623962.7U CN205681413U (en) | 2016-06-22 | 2016-06-22 | Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623962.7U CN205681413U (en) | 2016-06-22 | 2016-06-22 | Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205681413U true CN205681413U (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620623962.7U Active CN205681413U (en) | 2016-06-22 | 2016-06-22 | Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557859A (en) * | 2018-12-13 | 2019-04-02 | 珠海派诺科技股份有限公司 | Simple general use circuit based on RS-485 communication |
-
2016
- 2016-06-22 CN CN201620623962.7U patent/CN205681413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557859A (en) * | 2018-12-13 | 2019-04-02 | 珠海派诺科技股份有限公司 | Simple general use circuit based on RS-485 communication |
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