CN202025234U - Field bus module used in self-diagnosis sensor - Google Patents
Field bus module used in self-diagnosis sensor Download PDFInfo
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- CN202025234U CN202025234U CN2011201047740U CN201120104774U CN202025234U CN 202025234 U CN202025234 U CN 202025234U CN 2011201047740 U CN2011201047740 U CN 2011201047740U CN 201120104774 U CN201120104774 U CN 201120104774U CN 202025234 U CN202025234 U CN 202025234U
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Abstract
The utility model relates to a field bus module used in self-diagnosis sensor, which comprises an interface part and a communication part. The communication part mainly comprises a protocol chip, an equipment identifying code, a slave station address set circuit, and an RS485 interface circuit, and is characterized in that a logic control part formed by a micro-controller is arranged between the interface part and the communication part, the input end of the micro-controller is connected with a high-speed optocoupler in the interface part, and the output end of the micro-controller is connected with the protocol chip in the communication part. The utility model has the benefits that the effective signal state and the self-diagnosis state of a self-diagnosis sensor are transmitted to a master station through two mutually independent signals, not only detecting the effective signal state of the sensor, but also detecting the self-diagnosis state of the sensor, thereby making up the shortcomings in the conventional field bus module.
Description
Technical field
The utility model relates to a kind of load module based on the Profibus-DP fieldbus that is used for the self diagnosis sensor, can send the useful signal state and the self diagnosis state of each channel sensor to main website simultaneously by the Profibus-DP fieldbus.
Background technology
At present a lot of industrial control systems all also are based on Distributed Control System (DCS) (DCS), and along with the development of technology, these control system may be improved to field bus control system (FCS) by Distributed Control System (DCS) (DCS).Used a large amount of self diagnosis sensors in a lot of control system, it is the self diagnosis pulse that 200us, direction are opposite with significant level, gap periods is 4ms that these self diagnosis signal of sensor comprise width, system is by the quality that can judge sensor that has or not of self diagnosis pulse in the sensor signal, and its oscillogram as shown in Figure 1.Itself does not all have field-bus interface these sensors, if these control system will be improved to field bus control system (FCS), must need some fieldbus module to realize the collection of sensor signal.Existing in the market most of existing fieldbus module have only communication part circuit and interface section circuit to form, not the function that the self diagnosis state of sensor is judged.
The utility model content
The purpose of utility model is exactly in order to overcome the defective that existing fieldbus module can not be judged the diagnostic state of self diagnosis sensor, a kind of load module based on the Profibus-DP fieldbus that is used for the self diagnosis sensor is provided, this module can not only be as the useful signal state of existing fieldbus module detecting sensor, self diagnosis state that again can detecting sensor, the useful signal state of sensor and self diagnosis state send main website to by the Profibus-DP fieldbus the most at last.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of fieldbus module that is used for the self diagnosis sensor, comprise interface section and communication part, communication part mainly by protocol chip, EIC equipment identification code and tributary address circuit is set, the RS485 interface circuit is formed, it is characterized in that: a logic control part of being made up of microcontroller is set between interface section and communication part, the microcontroller input end links to each other with high speed photo coupling in the interface section, and the microcontroller output terminal links to each other with protocol chip in the communication part.
On the basis of technique scheme, further technical scheme can be arranged: be provided with impact damper and pilot lamp in the interface section, impact damper links to each other with microcontroller.
Microcontroller in the utility model is responsible for the logic control of total system, and microcontroller is gathered the signal condition of self diagnosis sensor by high speed photo coupling.Microcontroller is real-time transmitted to main website by the Profibus-DP protocol chip with the useful signal state and the self diagnosis state of self diagnosis sensor.
Microcontroller judges that the scheme of the significant level state of self diagnosis sensor is: it is 1 global variable StateCount that microcontroller at first defines an initialization value, and microcontroller is gathered the signal condition of a self diagnosis sensor every 1ms.If signal condition is a high level, judge the value of StateCount, if StateCount 〉=2 then think the significant level state of self diagnosis sensor for high, if StateCount＜the 2 then value of StateCount is added 1; If signal condition is a low level, judge the value of StateCount, if StateCount=0 then think that the significant level state of self diagnosis sensor is low, if StateCount ≠ the 0 then value of StateCount is subtracted 1.The interference of adopting this scheme not only can guarantee correctly to judge the significant level state but also can prevent the self diagnosis pulse.Microcontroller judges that the scheme of the self diagnosis state of self diagnosis sensor is: microcontroller is gathered the signal condition of a self diagnosis sensor and is judged whether the adjacent signal condition that collects for twice changes every 90us, if the signal condition of the interior self diagnosis sensor of 8ms does not all change then thinks that the self diagnosis sensor damages continuously, otherwise thinks that the self diagnosis working sensor is normal.
The beneficial effects of the utility model are: this module can not only be as the useful signal state of existing fieldbus module detecting sensor on the market, and self diagnosis state that again can detecting sensor has remedied the deficiency of existing fieldbus module on the market.The useful signal state of self diagnosis sensor and self diagnosis state are to be divided into two separate signals to send main website to, main website can determine whether to use the self diagnosis status signal of sensor as required, and this characteristic can guarantee that this module can be used for the signals collecting of common sensor as existing fieldbus module on the market.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings:
Fig. 1 is a self diagnosis sensor output waveform figure.
Fig. 2 is a schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 2, a kind of fieldbus module that is used for the self diagnosis sensor that the utility model provides is made up of interface section, logic control part and communication part successively.The interface section mainly comprises high speed photo coupling, and it links to each other with the input end of microcontroller, is provided with impact damper and pilot lamp in the interface section, and impact damper links to each other with microcontroller.The logic control part mainly comprises microcontroller and continuous clock circuit.Communication part mainly by protocol chip, EIC equipment identification code and tributary address circuit is set, the RS485 interface circuit is formed, the microcontroller output terminal links to each other with protocol chip in the communication part.
The major function of logic control part is that module is carried out integral body control, gather the self diagnosis sensor output signal by high speed photo coupling, judge the useful signal state and the self diagnosis state of sensor, by the useful signal state and the diagnostic state of pilot lamp indication sensor, send the useful signal state and the self diagnosis state of sensor to main website by protocol chip.
The major function of communication part is to be responsible for carrying out communication with main website, the Profibus-DP fieldbus is adopted in its communication, Profibus-DP is by the standard for Fieldbus that is a kind of international, open, that do not rely on the device fabrication merchant of Siemens company organization exploitation, is particularly suitable for the communication between Programmable Logic Controller and the on-the-spot I/O equipment that disperses.This partial circuit is isolated by high speed photo coupling and logic control partial circuit, mainly by protocol chip, EIC equipment identification code and tributary address circuit is set, the RS485 interface circuit is formed.The interface section mainly is made up of 16 road input interface circuits, pilot lamp, RS485 communication interface.
Input interface circuit is used to receive the signal from the self diagnosis sensor, is generally the positive-negative-positive signal of 24Vdc.For anti-stop signal disturbs, input interface circuit adopts high speed photo coupling, and the signal and the logic control circuit partly of autobiography sensor are isolated in the future.Pilot lamp is used to indicate the useful signal state and the diagnostic state of self diagnosis sensor.The RS485 communication interface is used for linking to each other with fieldbus.
This module is installed on the tobacco package unit production line, is used for the collection of self diagnosis sensor signal, has obtained good effect.This module can not only be as the useful signal state of existing fieldbus module detecting sensor on the market, self diagnosis state that can also detecting sensor, the useful signal state of sensor and self diagnosis state send main website to by the Profibus-DP fieldbus the most at last.
Claims (2)
1. the fieldbus module that is used for the self diagnosis sensor, comprise interface section and communication part, it is characterized in that: a logic control part of being made up of microcontroller is set between interface section and communication part, the microcontroller input end links to each other with high speed photo coupling in the interface section, and the microcontroller output terminal links to each other with protocol chip in the communication part.
2. the fieldbus module that is used for the self diagnosis sensor according to claim 1 is characterized in that: be provided with impact damper and pilot lamp in the interface section, impact damper links to each other with microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201047740U CN202025234U (en) | 2011-04-12 | 2011-04-12 | Field bus module used in self-diagnosis sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201047740U CN202025234U (en) | 2011-04-12 | 2011-04-12 | Field bus module used in self-diagnosis sensor |
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| Publication Number | Publication Date |
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| CN202025234U true CN202025234U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201047740U Expired - Fee Related CN202025234U (en) | 2011-04-12 | 2011-04-12 | Field bus module used in self-diagnosis sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122882A (en) * | 2013-04-24 | 2014-10-29 | 中烟机械技术中心有限责任公司 | Fault diagnosis system of Balluff self-diagnostic type sensor |
| CN105372151A (en) * | 2015-12-02 | 2016-03-02 | 中国电子科技集团公司第四十一研究所 | Apparatus and method for on-line test monitoring and fault location |
| CN106816933A (en) * | 2017-03-17 | 2017-06-09 | 珠海市微半导体有限公司 | The system processing unit and method of a kind of complicated charge protocol |
| CN107908132A (en) * | 2017-11-07 | 2018-04-13 | 浙江中烟工业有限责任公司 | A kind of device and method merged for autodiagnosis link sensor with ordinary sensors signal |
| CN111889400A (en) * | 2020-06-30 | 2020-11-06 | 中国电子科技集团公司第四十一研究所 | Device and method for external control of toothpaste filling machine removing mechanism |
-
2011
- 2011-04-12 CN CN2011201047740U patent/CN202025234U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122882A (en) * | 2013-04-24 | 2014-10-29 | 中烟机械技术中心有限责任公司 | Fault diagnosis system of Balluff self-diagnostic type sensor |
| CN105372151A (en) * | 2015-12-02 | 2016-03-02 | 中国电子科技集团公司第四十一研究所 | Apparatus and method for on-line test monitoring and fault location |
| CN106816933A (en) * | 2017-03-17 | 2017-06-09 | 珠海市微半导体有限公司 | The system processing unit and method of a kind of complicated charge protocol |
| CN106816933B (en) * | 2017-03-17 | 2019-03-01 | 珠海市一微半导体有限公司 | A kind of the system processing unit and method of complexity charge protocol |
| CN107908132A (en) * | 2017-11-07 | 2018-04-13 | 浙江中烟工业有限责任公司 | A kind of device and method merged for autodiagnosis link sensor with ordinary sensors signal |
| CN107908132B (en) * | 2017-11-07 | 2020-01-21 | 浙江中烟工业有限责任公司 | Device and method for combining signals of self-diagnosis sensor and common sensor |
| CN111889400A (en) * | 2020-06-30 | 2020-11-06 | 中国电子科技集团公司第四十一研究所 | Device and method for external control of toothpaste filling machine removing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20160412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |