CN201293928Y - Locale bus control module based on PROFIBUS-DP protocol - Google Patents
Locale bus control module based on PROFIBUS-DP protocol Download PDFInfo
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- CN201293928Y CN201293928Y CNU2008201437504U CN200820143750U CN201293928Y CN 201293928 Y CN201293928 Y CN 201293928Y CN U2008201437504 U CNU2008201437504 U CN U2008201437504U CN 200820143750 U CN200820143750 U CN 200820143750U CN 201293928 Y CN201293928 Y CN 201293928Y
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Abstract
The utility model relates to a field bus control module based on a PROFIBUS-DP protocol, which is composed of a microprocessor 1, a microprocessor 2, a optoelectronic isolating circuit, a key, a display module, a bus interface module and an RS485 interface circuit, the microprocessor 1 is connected with the key and the display module respectively through an I/O interface, the microprocessor 1 receives position signals through an A/D interface, receives alarm signals through the optoelectronic isolating circuit and outputs motor control signals through the I/O interface, the microprocessor 1 and the microprocessor 2 are in bidirectional connection through a serial communication interface, and the microprocessor 2, the bus interface module and the RS485 interface circuit are in bidirectional connection sequentially. The utility model utilizes a double-microprocessor structure, realizes digital control based on the PROFIBUS-DP field bus, increases stability and reliability of a control module, and realizes effects of high precision, densification and integration of the control module.
Description
Technical field
The utility model belongs to industrial instrumentation instrument field, especially a kind of Fieldbus Control module based on the PROFIBUS-DP agreement.
Background technology
Electric operator is the terminal actuating equipment in the industrial process control system, it mainly acts on is that control signal with control system is sent converts corresponding action to, reach the position of closure member in the by-pass valve control or the purpose of other governor motion positions, be widely used in industries such as electric power, metallurgy, petrochemical industry, heat supply, cement, building materials, light textile, food.Industrial process control system is mainly based on collecting and distributing control system at present, electric operator generally adopts 4～20mA DC simulation signal as control signal, yet adopts the industrial control system of analog control mode to have problems such as poor anti jamming capability, poor reliability.Along with development based on field bus technique, PROFIBUS-DP agreement (PROcess FIeld BUS-DecentralizedPerphery, fieldbus-DP agreement) be used in the industrial process control system more and more, therefore, need urgently a kind of field bus technique to be applied in the control system for electric actuating mechanism, realized totally digitilized Fieldbus Control product.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of antijamming capability is strong, reliability is high and can realize the Fieldbus Control module based on the PROFIBUS-DP agreement of full-digital control.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of Fieldbus Control module based on the PROFIBUS-DP agreement, it is characterized in that: by microprocessor 1, microprocessor 2, photoelectric isolating circuit, button, display module, bus interface module and RS485 interface circuit constitute, microprocessor 1 is connected with button and display module respectively by the I/O interface, microprocessor 1 is by A/D interface receiving position signal, microprocessor 1 receives alerting signal by photoelectric isolating circuit, microprocessor 1 is by I/O interface output motor control signal, microprocessor 1 is connected microprocessor 2 with microprocessor 2 by serial communication interface is two-way, the two-way successively connection of bus interface module and RS485 interface circuit.
And described microprocessor 1 also connects an infrared receiving circuit by the I/O interface.
And described alerting signal comprises spacing alarm signal, moment alerting signal and the heat alarm of topworks.
And described RS485 interface circuit is connected and composed by bus driver chip 65A176, high speed photo coupling chip HCPL7101 and high speed photo coupling chip HCPL0601.
And described display module is the digital display tube of LED.
And described microprocessor 1 is the ATMEGA88V chip, and described microprocessor 2 is the STC89C58RD+ chip, and bus interface module is a Siemens SPC3 Bus Interface Chip, and described photoelectric isolating circuit has adopted the SFH6156-3 chip.
And described infrared receiving circuit has adopted the SC9149A decoding chip.
Advantage of the present utility model and good effect are:
1. this control module adopts accurate PROFIBUS-DP digital signal to control, and has increased transmitting data information bearing capacity and diversity, thoroughly solves loss and interference in the analog signal transmission, has improved antijamming capability.
2. this control module adopts the dual micro processor structure, and two microprocessors are carried out different tasks respectively, and the intercommunication of two microprocessors has improved the stability and the reliability of control module effectively, has improved processing speed simultaneously.
3. this control module adopts two high integration, high performance microprocessor to make that circuit is simple, peripheral components is few, and it is integrated into each functional block in the module, realizes high precision, densification, the incorporate effect of control module.
4. the utility model adopts the dual micro processor structure, realizes the Digital Control based on the PROFIBUS-DP fieldbus, has improved the stability and the reliability of control module, has realized high precision, densification, the incorporate effect of control module.
Description of drawings
Fig. 1 is connection side's block diagram of the present utility model;
Fig. 2 is the circuit diagram of microprocessor 1 control section of the present utility model;
Fig. 3 is the circuit diagram of infrared receiving circuit part of the present utility model;
Fig. 4 is the circuit diagram of photoelectric isolating circuit part of the present utility model;
Fig. 5 is the circuit diagram of microprocessor 2 of the present utility model and bus interface module coupling part;
Fig. 6 is the circuit diagram of RS485 interface circuit part of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described.
As shown in Figure 1, a kind of Fieldbus Control module based on the PROFIBUS-DP agreement, by microprocessor 1, microprocessor 2, photoelectric isolating circuit, button, infrared receiving circuit, display module, bus interface module and RS485 interface circuit constitute, in the present embodiment, microprocessor 1 has been selected the ATMEGA88V high-performance microprocessor of atmel corp for use, the ATMEGA88V microprocessor has integrated A/D converter, watchdog circuit, function such as Flash and EEPROM, microprocessor 2 has been selected the STC89C58RD+ high-performance microprocessor of STC Corporation for use, and it is big that STC89C58RD+ has the ram in slice district, at a high speed, low in power consumption.Microprocessor 1 is connected with button, infrared receiving circuit and display module respectively by the I/O interface, button operation or infrared receiving circuit can receive the order that the user sends, the user both can adopt the button operation mode, also can adopt the Infrared remote controller mode of operation, adopt two kinds of operation control modes to be more convenient for user's use; Display module is used for showing the running state information and the parameter setting information of topworks, and this display module is the digital display tube of LED.Microprocessor 1 is connected with the position signalling of input by the A/D interface, the A/D interface of microprocessor 1 can be a digital signal by analog signal conversion with position signalling, microprocessor 1 is connected with the alerting signal of input by photoelectric isolating circuit, finishes the data acquisition to position signalling and alerting signal.The data of 1 pair of collection of microprocessor and receive the information of coming and carry out analyzing and processing from microprocessor 2 after, by the operation of I/O interface output motor control signal control executing mechanism.Microprocessor 1 is connected by serial communication interface is two-way with microprocessor 2, microprocessor 2, bus interface module and the two-way connection of RS485 interface circuit, send microprocessor 1 to by serial communication interface after the control data Translation Processing of microprocessor 2 with the host computer of bus interface module reception, the feedback information with microprocessor 1 sends to level controlling system by the bus protocol chip simultaneously.
Below the each several part circuit is specified:
The circuit diagram of microprocessor 1 control section as shown in Figure 2, it mainly comprises microprocessor 1ATMEGA88V chip, crystal oscillating circuit and the special-purpose chip that resets, all software programs and systematic parameter are stored in respectively among the Flash and EEPROM of ATMEGA88V chip, and crystal oscillating circuit provides the stable clock signal to the ATMEGA88V chip; Reset circuit is selected for use the chip that resets of IM809 special use to guarantee that ATMEGA88V is lower than in stabilized voltage supply under the situation of 4.2V to reset.ATMEGA88V is connected with digital display tube of photoelectric isolating circuit, button, infrared receiving circuit, LED and microprocessor 2STC89C58RD+ respectively, mainly finishes: the collection and the processing of alerting signal such as spacing alarm signal, moment alerting signal and heat alarm and position signalling; The reception of button operation and infrared remote-controlled signal and processing; The demonstration of topworks's running state information, parameter setting information; The data of reception microprocessor 2 transmission and the information of the local collection of combination are handled and result are transferred to microprocessor 2, simultaneously topworks are controlled.
The circuit diagram of infrared receiving circuit part as shown in Figure 3, this circuit has adopted and has matched the infrared remote control that uses mutually with telepilot transmitting chip SC9148 and receive decoding chip SC9149A, its by infrared receiving terminal with the signal that receives through delivering to the reception pin of SC9149A chip behind the phase inverter, deliver to the I/O port of microprocessor 1 from its corresponding pin through behind phase inverter again after the parsing of process SC9149A chip, thereby finish the infrared remote-control operation function.
The circuit of photoelectric isolating circuit part as shown in Figure 4, this circuit has adopted opto-coupler chip three SFH6156-3 that spacing alarm, the moment of topworks are reported to the police and switching value signal such as temperature alarming carries out photoelectricity and isolates, deliver to the I/O port of microprocessor 1 then, adopt photoelectric isolating circuit to avoid of the interference of above-mentioned alerting signal microprocessor 1.
The circuit diagram that microprocessor 2 is connected with bus interface module as shown in Figure 5, bus interface module has adopted the SPC3 chip of Siemens Company, microprocessor 2STC89C58RD+ control SPC3 chip, and finish exchanges data with microprocessor 1ATMEGA88V by serial communication interface.Because the ram in slice of STC89C58RD+ is inner integrated watchdog circuit and 1280 bytes, make the circuit of its control SPC3 simple, control flexibly, for STC89C58RD+, the SPC3 chip is equivalent to an external RAM of its expansion, (DB0～DB7) (AB0～AB4) link to each other with the P2 mouth with the P0 mouth of STC89C58RD+, the address realm of SPC3 is from 0x1000 to 0x1FFF with address wire by data/address multiplex bus.
The circuit diagram of RS485 interface circuit part as shown in Figure 6, be reliability level that improves system and the undesired signal of eliminating the external world, the RS485 interface circuit selects for use the 65A176 of 12Mbps baud rate as the bus driver chip, and the photoelectricity of selecting for use HCPL7101 and HCPL0601 high speed photo coupling to carry out input/output port is isolated.
Principle of work of the present utility model is: industrial process control system sends control command to bus protocol chip SPC3 by the RS485 interface circuit by bus cable, microprocessor 2 sends microprocessor 1 to again by serial communication interface after with the reception data translation among the SPC3, microprocessor 1 is according to the data that receive and in conjunction with local information of gathering, through after the calculation process, control executing mechanism action again, simultaneously with the current location information that collects, fault alarm information and work state information are through microprocessor microprocessor 2, bus protocol chip SPC3, RS485 interface circuit and bus cable pass back to industrial process control system, so far realize the Long-distance Control of upper system to topworks.
It is emphasized that; embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.
Claims (7)
1. Fieldbus Control module based on the PROFIBUS-DP agreement, it is characterized in that: by microprocessor 1, microprocessor 2, photoelectric isolating circuit, button, display module, bus interface module and RS485 interface circuit constitute, microprocessor 1 is connected with button and display module respectively by the I/O interface, microprocessor 1 is by A/D interface receiving position signal, microprocessor 1 receives alerting signal by photoelectric isolating circuit, microprocessor 1 is by I/O interface output motor control signal, microprocessor 1 is connected microprocessor 2 with microprocessor 2 by serial communication interface is two-way, the two-way successively connection of bus interface module and RS485 interface circuit.
2. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 1 is characterized in that: described microprocessor 1 also connects an infrared receiving circuit by the I/O interface.
3. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 1 is characterized in that: described alerting signal comprises spacing alarm signal, moment alerting signal and the heat alarm of topworks.
4. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 1 is characterized in that: described RS485 interface circuit is connected and composed by bus driver chip 65A176, high speed photo coupling chip HCPL7101 and high speed photo coupling chip HCPL0601.
5. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 1 is characterized in that: described display module is the digital display tube of LED.
6. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 1, it is characterized in that: described microprocessor 1 is the ATMEGA88V chip, described microprocessor 2 is the STC89C58RD+ chip, bus interface module is a Siemens SPC3 Bus Interface Chip, and described photoelectric isolating circuit has adopted the SFH6156-3 chip.
7. the Fieldbus Control module based on the PROFIBUS-DP agreement according to claim 2, it is characterized in that: described infrared receiving circuit has adopted the SC9149A decoding chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201437504U CN201293928Y (en) | 2008-12-01 | 2008-12-01 | Locale bus control module based on PROFIBUS-DP protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201437504U CN201293928Y (en) | 2008-12-01 | 2008-12-01 | Locale bus control module based on PROFIBUS-DP protocol |
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| CN201293928Y true CN201293928Y (en) | 2009-08-19 |
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| CNU2008201437504U Expired - Fee Related CN201293928Y (en) | 2008-12-01 | 2008-12-01 | Locale bus control module based on PROFIBUS-DP protocol |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287571A (en) * | 2011-05-31 | 2011-12-21 | 天津市津达执行器有限公司 | Absolute encoder based valve position information converting module |
| CN105302035A (en) * | 2015-12-11 | 2016-02-03 | 天津市津达执行器有限公司 | PROFIBUS bus type electric actuating mechanism controller with redundancy functions |
| CN106647445A (en) * | 2016-10-28 | 2017-05-10 | 天津市津达执行器有限公司 | Field bus control module based on MODBUS-RTU protocol |
| CN110086261A (en) * | 2019-06-07 | 2019-08-02 | 珠海博威电气股份有限公司 | It is a kind of can industrialization feeder line distribution terminal |
-
2008
- 2008-12-01 CN CNU2008201437504U patent/CN201293928Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287571A (en) * | 2011-05-31 | 2011-12-21 | 天津市津达执行器有限公司 | Absolute encoder based valve position information converting module |
| CN105302035A (en) * | 2015-12-11 | 2016-02-03 | 天津市津达执行器有限公司 | PROFIBUS bus type electric actuating mechanism controller with redundancy functions |
| CN106647445A (en) * | 2016-10-28 | 2017-05-10 | 天津市津达执行器有限公司 | Field bus control module based on MODBUS-RTU protocol |
| CN110086261A (en) * | 2019-06-07 | 2019-08-02 | 珠海博威电气股份有限公司 | It is a kind of can industrialization feeder line distribution terminal |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20121201 |