CN209640917U - Airborne particle counter redundancy fault-tolerant system - Google Patents
Airborne particle counter redundancy fault-tolerant system Download PDFInfo
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- CN209640917U CN209640917U CN201920414217.5U CN201920414217U CN209640917U CN 209640917 U CN209640917 U CN 209640917U CN 201920414217 U CN201920414217 U CN 201920414217U CN 209640917 U CN209640917 U CN 209640917U
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Abstract
The utility model relates to a kind of airborne particle counter redundancy fault-tolerant systems, belong to optical dust particle counter field.The system includes: sensor, primary processor, first from processor, second from processor and display screen；Primary processor has been internally integrated primary processor analog-to-digital conversion module, Main Processor Unit；First has been internally integrated first from processor analog-to-digital conversion module, first from processing unit from processor；Second has been internally integrated second from processor analog-to-digital conversion module, second from processing unit from processor；Sensor is electrically connected from processor, second from processor with primary processor, first respectively by conducting wire；First passes through conducting wire and primary processor electrical connection from processor, second from processor；Primary processor is electrically connected by conducting wire and display screen；It can solve the analog signal that uniprocessor exports sensor to handle, under the conditions of different bad working environments, the more obvious problem of the interference of signal；The failure rate of system can be reduced.
Description
Technical field
The utility model belongs to the field optical dust particle counter (Optical Particle Counter, OPC), tool
Body is related to a kind of airborne particle counter redundancy fault-tolerant system.
Background technique
Most of micro- pollution (Micro-contamination) industry is all relied on using optical dust particle counter,
Optical dust particle counter is commonly used in the atmospheric particles pollution in detection toilet and clean area, to the big of clean environment
The number of microcosmic particle carries out statistics and analysis in gas, and makes cleaning to clean environment according to international standards such as ISO14644-1
The judgement of grade is widely used in the industries such as pharmacy, chemical industry, microelectronics, semiconductor, inspection and quarantine.
The core component of optical particle counter is sensor, using light scattering principle, using photodetector particle
The optical signal of scattering is converted into electric signal, and particle size is smaller, and signal is fainter.The analog signal of sensor output, mostly
It is that frequency is relatively high and random spiking.These features result in the processing difficulty of the analog signal of sensor output
It is very big, and then the accuracy for resulting in airborne particle counter is not high.
Traditional corpuscular counter is handled using the analog signal that uniprocessor exports sensor, different severe
Under working condition, the interference of signal is more obvious, reduces the accuracy of airborne particle counter, the reliability of instrument.
Utility model content
The purpose of this utility model is to provide a kind of structures simply, the dust particle of high reliability, high accuracy
Device redundancy fault-tolerant system.
In order to achieve the above objectives, the utility model provides the following technical solutions: the system comprises: sensor, main process task
Device, first are from processor, second from processor and display screen；
The primary processor has been internally integrated primary processor analog-to-digital conversion module, Main Processor Unit；Described first from processing
Device has been internally integrated first from processor analog-to-digital conversion module, first from processing unit；Described second is internally integrated from processor
Have second from processor analog-to-digital conversion module, second from processing unit；
Sensor is electrically connected from processor, second from processor with primary processor, first respectively by conducting wire；First from
Processor, second pass through conducting wire from processor and primary processor is electrically connected；The primary processor passes through conducting wire and display screen
Electrical connection.
Optionally, the analog signal of output is respectively sent to described first from processor, described second by the sensor
From processor and the primary processor；
Correspondingly, described first from processor, described second from processor and the primary processor respectively to receiving
Analog signal is converted into digital signal, and handles the digital signal.
Optionally, the Main Processor Unit is electrical from processing unit from processing unit and described second with described first respectively
It is connected；
The Main Processor Unit includes logical operation circuit, and the logical operation circuit is defeated from processing unit by described first
Processing result, the described second processing result exported from processing unit and/or the Main Processor Unit out believes the number
Number processing result carry out logical operation, obtain final process result.
Optionally, the display screen is made of touch control display module.
Optionally, the touch control display module includes touching driving chip and screen driving chip, the touch driving chip
For TSC2046 chip, the screen driving chip is SSD1963 chip.
Optionally, the Main Processor Unit, described first use from processing unit and described second from processing unit
Cortex M3 chip.
The utility model has the beneficial effects that: by the way that three channels, three processors are arranged in systems simultaneously to biography
The analog signal of sensor output is acquired and handles, and three signal processing channels are mutually indepedent, substantially increase signal processing
Reliability；It can solve the analog signal that uniprocessor exports sensor to handle, under the conditions of different bad working environments,
The problem of interference of signal is more obvious, reduces accuracy, the reliability of instrument of airborne particle counter；Even if any one
Interference of a channel by bad working environments environment or any one break down from processor, will not influence normally to count, pole
The failure rate of system is reduced greatly.
The utility model relates to airborne particle counter redundancy fault-tolerant signal processing method it is simple and effective, to processor
It is required that it is lower, and then save the overall cost of instrument.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is the airborne particle counter redundancy fault-tolerant system composition schematic diagram of the utility model.
Fig. 2 is the flow chart of the signal processing method in the airborne particle counter redundancy fault-tolerant system of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Referring to Fig.1, airborne particle counter redundancy fault-tolerant system in an embodiment of the utility model, the system packet
Include: sensor 110, primary processor 120, first are from processor 130, second from processor 140 and display screen 150.
Sensor 110 is electric from processor 130, second from processor 140 with primary processor 120, first respectively by conducting wire
Gas connection；First is electrically connected by conducting wire and primary processor 120 from processor 130, second from processor 140；Main process task
Device 120 is electrically connected by conducting wire and display screen 150.
The analog signal of output for that will be respectively sent to first from processor 130, second from processor by sensor 110
140 and primary processor 120；Correspondingly, it first is docked respectively from processor 130, second from processor 140 and primary processor 120
The analog signal received is converted into digital signal, and handles digital signal.
Specifically, primary processor 120 has been internally integrated primary processor analog-to-digital conversion module and Main Processor Unit.Wherein, main
Processor analog-to-digital conversion module is used to the analog signal that primary processor 120 receives being converted into digital signal；Main Processor Unit
For being handled digital signal to obtain processing result.
First has been internally integrated first from processor analog-to-digital conversion module and first from processing unit from processor 130.Its
In, first is used to be converted into digital letter from the analog signal that processor 130 receives for first from processor analog-to-digital conversion module
Number；First is used to be handled digital signal to obtain processing result from processing unit.
Second has been internally integrated second from processor analog-to-digital conversion module and second from processing unit from processor 140.Its
In, second is used to be converted into digital letter from the analog signal that processor 140 receives for second from processor analog-to-digital conversion module
Number；Second is used to be handled digital signal to obtain processing result from processing unit.
This system forms three treatment channels by three processors and carries out simultaneously to the analog signal of sensor output
Acquisition and processing, and three signal processing channels are mutually indepedent, substantially increase the reliability of signal processing.
In the present embodiment, Main Processor Unit is electrical from processing unit from processing unit and described second with described first respectively
It is connected；Main Processor Unit includes logical operation circuit, processing result that logical operation circuit is exported first from processing unit, the
Two processing results exported from processing unit and/or Main Processor Unit carry out logical operation to the processing result of digital signal, obtain
To final process result.It is instructed in this way, Main Processor Unit can be sent to first from processing unit, second from processor unit, the
One can also pass to calculated result Main Processor Unit from processing unit from processing unit, second, so for Main Processor Unit into
Row logical operation.
Primary processor is electrically connected by conducting wire and display screen, is convenient for human-computer interaction and display processing result.
Optionally, display screen 150 is made of touch control display module.The touch control display module includes touching driving chip and screen
Driving chip, touch driving chip are TSC2046 chip, and screen driving chip is SSD1963 chip.
Optionally, Main Processor Unit, first use Cortex M3 chip from processing unit from processing unit and second.
In conclusion airborne particle counter redundancy fault-tolerant system provided by the utility model, by being arranged in systems
Three channels, three processors are acquired and handle to the analog signal of sensor output simultaneously, three signal processing channels
Independently of each other, the reliability of signal processing is substantially increased；Can solve analog signal that uniprocessor exports sensor into
Row processing, under the conditions of different bad working environments, the interference of signal is more obvious, reduce airborne particle counter accuracy,
The problem of reliability of instrument；Even if interference of any one channel by bad working environments environment or any one from processor
It breaks down, will not influence normally to count, greatly reduce the failure rate of system.
Optionally, it is based on above-mentioned airborne particle counter redundancy fault-tolerant system, referring to Fig. 2, the application one is schematically implemented
Example is also provided with the signal processing method in airborne particle counter redundancy fault-tolerant system, and this method includes at least following step
It is rapid:
Step 201, the analog signal that sensor exports is converted to digital signal by primary processor analog-to-digital conversion module, and
Signal processing is carried out in Main Processor Unit, obtains the first processing result.
Step 202, first digital signal is converted by the analog signal that sensor exports from processor analog-to-digital conversion module,
And signal processing is carried out from processing unit first, obtain second processing result；And second processing result is sent to main place
Manage unit.
Step 203, second digital signal is converted by the analog signal that sensor exports from processor analog-to-digital conversion module,
And signal processing, third processing result are carried out from processing unit second；And third processing result is sent to main process task list
Member.
Step 204, Main Processor Unit executes logical operation: ((a&b&c)==a) && ((a&b&c)==b) && ((a&b&
C)==c) it is whether true；It is a&b&c that result is exported if setting up；Logical operation is executed if invalid: ((a&b)==
A) whether && ((a&b)==b) is true；, if so, then exporting result is a&b；If not, then execute logical operation: ((b&
Whether c)==b) && ((b&c)==c) is true；If so, then exporting result is b&c；If not, then execute logic fortune
Calculate: (whether (a&c)==a) && ((a&c)==c) is true；If so, then exporting result is a&c；If not, then mark
It for failure and shows, generate journal file, a is the first processing result, and b is second processing as a result, c is third processing result.
Optionally, before step 201, primary processor can also be determined first from processing unit and second from processing unit
Whether break down.At this point, Main Processor Unit sends first state detection code to first from processing unit；And to second from processing
Unit sends the second state-detection code；Received first state detection code is returned to Main Processor Unit from processing unit by first；
Received second state-detection code is returned to Main Processor Unit from processing unit by second；Main Processor Unit compares first from processing
Whether the first state code and the first state code that sends of Main Processor Unit that unit is sent are consistent and second from processing unit hair
Whether the second status code sent and the second status code that Main Processor Unit is sent are consistent；It is labeled as failure if inconsistent and shows
Show, generates journal file.
In conclusion the signal processing method in airborne particle counter redundancy fault-tolerant system provided in this embodiment, leads to
Cross primary processor analog-to-digital conversion module and the analog signal that sensor exports be converted into digital signal, and in Main Processor Unit into
Row signal processing obtains the first processing result；First analog signal for exporting sensor from processor analog-to-digital conversion module turns
Digital signal is turned to, and carries out signal processing from processing unit first, obtains second processing result；And by second processing knot
Fruit is sent to Main Processor Unit；Second converts digital letter for the analog signal that sensor exports from processor analog-to-digital conversion module
Number, and signal processing, third processing result are carried out from processing unit second；And third processing result is sent to main process task
Unit；Main Processor Unit executes logical operation according to the first processing result, second processing result and third processing result；It can solve
The analog signal that certainly uniprocessor exports sensor is handled, and under the conditions of different bad working environments, the interference of signal is more
Obviously, the problem of reducing accuracy, the reliability of instrument of airborne particle counter；Even if any one channel is by severe
The interference of work condition environment or any one break down from processor, will not influence normally to count, greatly reduce system
Failure rate.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (4)
1. a kind of airborne particle counter redundancy fault-tolerant system, which is characterized in that the system comprises: sensor, primary processor,
First from processor, second from processor and display screen；
The primary processor has been internally integrated primary processor analog-to-digital conversion module, Main Processor Unit；Described first out of processor
Portion is integrated with first from processor analog-to-digital conversion module, first from processing unit；Described second has been internally integrated from processor
Two from processor analog-to-digital conversion module, second from processing unit；
Sensor is electrically connected from processor, second from processor with primary processor, first respectively by conducting wire；First from processing
Device, second pass through conducting wire from processor and primary processor is electrically connected；The primary processor is electrical by conducting wire and display screen
Connection；
The analog signal of output is respectively sent to described first from processor, described second from processor and institute by the sensor
State primary processor；
Correspondingly, described first from processor, described second from processor and the primary processor simulation to receiving respectively
Signal is converted into digital signal, and handles the digital signal；
The Main Processor Unit is electrically connected from processing unit and described second from processing unit with described first respectively；
The Main Processor Unit includes logical operation circuit, what the logical operation circuit was exported described first from processing unit
Processing result, the described second processing result exported from processing unit and/or the Main Processor Unit are to the digital signal
Processing result carries out logical operation, obtains final process result.
2. system according to claim 1, which is characterized in that the display screen is made of touch control display module.
3. system according to claim 2, which is characterized in that the touch control display module includes touching driving chip and screen
Driving chip, the touch driving chip are TSC2046 chip, and the screen driving chip is SSD1963 chip.
4. system according to claim 1, which is characterized in that the Main Processor Unit, described first from processing unit and
Described second uses Cortex M3 chip from processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920414217.5U CN209640917U (en) | 2019-03-29 | 2019-03-29 | Airborne particle counter redundancy fault-tolerant system |
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| CN201920414217.5U CN209640917U (en) | 2019-03-29 | 2019-03-29 | Airborne particle counter redundancy fault-tolerant system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109840582A (en) * | 2019-03-29 | 2019-06-04 | 苏州苏信环境科技有限公司 | Airborne particle counter redundancy fault-tolerant system and signal processing method |
| CN113562066A (en) * | 2021-07-20 | 2021-10-29 | 浙江万安科技股份有限公司 | Wire-controlled steering system and fault diagnosis method |
| CN109840582B (en) * | 2019-03-29 | 2024-05-14 | 苏州苏信环境科技有限公司 | Redundant fault-tolerant system of dust particle counter and signal processing method |
-
2019
- 2019-03-29 CN CN201920414217.5U patent/CN209640917U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109840582A (en) * | 2019-03-29 | 2019-06-04 | 苏州苏信环境科技有限公司 | Airborne particle counter redundancy fault-tolerant system and signal processing method |
| CN109840582B (en) * | 2019-03-29 | 2024-05-14 | 苏州苏信环境科技有限公司 | Redundant fault-tolerant system of dust particle counter and signal processing method |
| CN113562066A (en) * | 2021-07-20 | 2021-10-29 | 浙江万安科技股份有限公司 | Wire-controlled steering system and fault diagnosis method |
| CN113562066B (en) * | 2021-07-20 | 2022-09-09 | 浙江万安科技股份有限公司 | Wire-controlled steering system and fault diagnosis method |
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