CN106941531A - A kind of multi-channel detection device and its detection method based on DSP - Google Patents
A kind of multi-channel detection device and its detection method based on DSP Download PDFInfo
- Publication number
- CN106941531A CN106941531A CN201710195398.2A CN201710195398A CN106941531A CN 106941531 A CN106941531 A CN 106941531A CN 201710195398 A CN201710195398 A CN 201710195398A CN 106941531 A CN106941531 A CN 106941531A
- Authority
- CN
- China
- Prior art keywords
- pins
- chip
- module
- signal
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a kind of multi-channel detection device based on DSP and its detection method, its detection means includes signalling channel switching control module and power supply module, the signalling channel switching control module is by the synchronous incoming coupled signal pre-processing module of packet signal, the signal pre-processing module is connected with signal comparison module, AD acquisition modules, the signal comparison module, AD acquisition modules and main control chip, the main control chip is connected with communication module, and the main control chip is also connected with memory module；Its detection method, comprises the following steps：Beginning, each module initialization, the self-inspection of device hardware signal path, judge self-inspection by, judge whether quick tachometric survey, only carry out tachometric survey, judge whether to reach specified rotating speed, speed vibration amplitude while measuring, whether inquiry has communication instruction, interruption subroutine, dispensing device operation irregularity information, terminate.Cost performance of the present invention is high, self-inspection is strong, improves the versatility and interchangeability of device.
Description
Technical field
The invention belongs to a kind of on-line measuring device and its detection method, and in particular to a kind of multi-way detecting based on DSP
Device and its detection method.
Background technology
It is presently available for many rotating machinery rotating speeds, the measuring apparatus of amplitude parameter synchronization detection and is broadly divided into two
Class, the sensor that the first kind is used is generally eddy current sensor, ultrasonic sensor and laser sensor etc., there is volume more
Greatly, the features such as high cost, it is adaptable to measured under laboratory's state, do not possess industry spot large-scale application condition；Equations of The Second Kind is adopted
With the measuring apparatus of cheap velocity coilses sensor, its measurement accuracy is relatively low, and measured result is with a low credibility, using limitation
Property is very big.
The content of the invention
The present invention proposes that the purpose is to provide a kind of multichannel inspection based on DSP to solve the problem of prior art is present
Survey device and its detection method.
The technical scheme is that：A kind of multi-channel detection device based on DSP, including receive 20 tunnel measured signals and right
Its signalling channel switching control module being grouped and power supply power supply module, the signalling channel switching control module will divide
Signal synchronously incoming coupled signal pre-processing module is organized, the signal pre-processing module is adopted with signal comparison module, AD
Collect module to be connected, the signal comparison module, AD acquisition modules and main control chip, the main control chip are connect by communication module
Enter CAN communication network, and be connected into upper location supervisory, the main control chip is also with storing rotating machinery operational factor
The memory module of threshold value is connected.
The communication module is CAN communication module, and the detection means of the access CAN communication network has unique identification
Address, the identification information storage of device is in a storage module.
Main control chip is included in the signalling channel switching control module, 26,25,24 pins of main control chip are respectively by suitable
Sequence is connected with 1,16,15 pins of four passage switching chips, the PWM square waves of 11 pin outputting standards of main control chip, respectively
Be connected with 11 pins of four passages switching chips, 1~20 pin of 20 road signaling interfaces and four passages switch chip 4,
5th, 6,7,12 pins are respectively connected with successively.8 pins of four passage switching chips are respectively the output letter after the completion of the switching of four tunnels
Number.
The signal pre-processing module includes No. I amplifier core in four identical pretreatment circuits, the pretreatment circuit
8,4 pins of piece meet+12V, -12V respectively, are sequentially connected in series between 2 pins and ground of No. I amplifier chip into R1, C1, L1, through letter
L2, C2, R2 that the IN signals of number passage switching control module selection pass sequentially through series connection enter 3 pins of amplifier chip, while I
3 pins of number amplifier chip are grounded by R3, and 1 pin of No. I amplifier chip is pretreated signal output pin, No. I fortune
1 pin for putting chip is connected by resistance R4 with 2 pins, the signal OUT2 entering signal ratios of the 1 pin output of No. I amplifier chip
Compared with module, the signal OUT1 that 1 pin of No. I amplifier chip is exported after resistance R5 enters AD acquisition modules.
Comprising four identical signal comparator circuits in the signal comparison module, the signal of signal pre-processing module output
OUT2 enters 3 pins of No. II amplifier chip by resistance R6,8,4 pins of No. II amplifier chip connect respectively 3.3V,.No. II
1,2 pins of amplifier chip are connected and enter 3 pins of comparable chip through resistance R7,8,4 pins of comparable chip connect respectively 3.3V,
Ground, 3.3V is connected with resistance R9, R10 for connecting, is connected to ground, and forms electric resistance partial pressure, the R10 other end and the 2 of comparable chip
Pin is connected, and 3.3V is connected through resistance R8 with 1 pin of comparable chip, and it is straight that 1 pin of comparable chip is output as square-wave signal
Tap into the detection that rotating speed is carried out into main control chip.
The AD acquisition modules include AD acquisition chips, and 1 pin of AD acquisition chips meets -12V, and 48 pins meet+12V, 8~
13 pins and 34~41 pins 18,19,20,21,2,6,175,7,174,11,12,13,16,17 drawing respectively with main control chip
Pin is connected, and the output signals of AD acquisition chips uses parallel output, and 16~23 pins and 26~33 pins are respectively and main control chip
115,116,122,123,124,126~136 pins be connected.
The communication module includes No. I isolating chip, No. II isolating chip, CAN driver, the 1 of No. I isolating chip
Pin meets 3.3V, and 6 pins meet+5V, and resistance R12 connections are leaned between 5 pins and 6 pins, and 4 pins ground connection, 5 pins drive with CAN
1 pin of dynamic device is connected, and 3 pins are connected by resistance R11 with 176 pins of main control chip, and 4 pins of No. II isolating chip connect
Ground, 1 pin meets+5V, and 6 pins meet 3.3V, and resistance R14 connections are leaned between 5 pins and 6 pins, and 3 pins are total by resistance R15 and CAN
4 pins of line drive are connected, and 5 pins are connected with 1 pin of main control chip, the 2 pins ground connection of the CAN driver, 3
Pin meets+5V, and 8 pins are grounded by resistance R13, and 6,7 pins are respectively connected to the CANL and CANH of CAN communication network.
The memory module includes storage chip, and 1,2,3,4,7 pins of storage chip are grounded, and 8 pins meet 3.3V, and 6 draw
Pin meets 3.3V by resistance R15, and 5 pins meet 3.3V by resistance R16, and 5 pin of storage chip connect 74 pin of main control chip, 6 pin
Connect 75 pin of main control chip.
The detection method of multi-channel detection device of any one above-mentioned based on DSP, comprises the following steps：
(I) starts
(II) each module initialization
The initialization of each peripheral functionality module is carried out to main control chip first after device startup, and reads the present apparatus depositing
The address of storage and threshold information；
The hardware signal path self-inspection of (III) device
The hardware signal path of device is detected, the standard PWM square waves of fixed frequency are exported by main control chip, is led to
Cross signalling channel switching control module and gate the PWM square-wave signals, be passed to four road sense channels；By judging testing result
Whether normal carry out detection means hardware signal path
(IV) judges that self-inspection passes through
Whether judgment means hardware signal path is normal, normally then starts detection into step (V), if abnormal
Into step (X I)；
(V) judges whether quick tachometric survey
Enter step (VI) if quick tachometric survey is carried out, then enter step (VII) without quick tachometric survey；
(VI) only carries out tachometric survey
Quick tachometric survey is the measurement for only carrying out rotary speed parameter, does not detect other parameters, is posted by reading eCAP peripheral hardwares
Numerical computations in storage draw the rotary speed parameter of the 4 road signals currently gated, then switching channel, open next group of 4 roads letter
Number, Rotating speed measring is carried out successively, until all measurement is finished 5 groups of signal rotating speeds；
(VII) judges whether to reach specified rotating speed
Enter step (VIII) if specified rotating speed is reached, step (V) is entered if not up to rotating speed is specified；
(VIII) speed vibration amplitude is measured simultaneously
The measurement of row amplitude and rotating speed is entered to 4 road signals of gating first, the rotating speed of remaining 16 road signal is then measured；
Whether (IV) inquiry has communication instruction
If communication instruction then enters step (X), switched to if without communication instruction into step (V) next
Batch is measured；
(X) interruption subroutine
Perform interruption subroutine；
(X I) dispensing device operation irregularity information
(X II) terminates.
The interruption subroutine comprises the following steps：
(X III) starts
(X IV) judges whether communication time time-out
Enter step (X V) if beyond the communication response time, step is entered if without departing from the communication response time
(ⅹⅵ)；
(X V) shows communication abnormality
Alarm and show communication abnormality；
(X VI) inquiry CAN mailboxes receive instruction
Whether inquiry present apparatus CAN mailboxes receive the instruction of upper location supervisory, and step is entered if being not received by
Suddenly (II X), step (X VII) is entered if new command is received；
(X VII) judges whether that address is matched with the present apparatus
Enter step (II X) if the address in instruction is mismatched with the present apparatus, if the address in instruction and this dress
Put matching and then enter step (X VIII)；
(X VIII) obtains communication data and parsed
(X IV) performs corresponding operating and returned data according to instruction
(II X) terminates.
Cost performance of the present invention is high, can be achieved to detect 20 rotating machinery rotating speeds and the synchronous of amplitude；It can realize
The self-inspection of hardware signal path, finds device faults itself during use in time；
Its identification address in communication network can be stored, and online modification, inquiry unit identification address can be realized, is carried
The high versatility and interchangeability of device；The threshold value of rotating machinery operational factor can be stored, and in its running status ginseng
When number exceeds threshold range, saving scene data supply follow-up rotating machinery running state analysis.
Brief description of the drawings
Fig. 1 is the electrical block diagram of detection means in the present invention；
Fig. 2 is the circuit diagram of signalling channel switching control module in the present invention；
Fig. 3 is the circuit diagram of signal pre-processing module in the present invention；
Fig. 4 is the circuit diagram of signal comparison module in the present invention；
Fig. 5 is the circuit diagram of AD acquisition modules in the present invention；
Fig. 6 is the circuit diagram of communication module in the present invention；
Fig. 7 is the circuit diagram of memory module in the present invention；
Fig. 8 is the power supply module circuit diagram of WRA2412S in the present invention；
Fig. 9 is the power supply module circuit diagram of K7805 in the present invention；
Figure 10 is the power supply module circuit diagram of TPS767D301 in the present invention；
Figure 11 is the method flow diagram of detection method in the present invention；
Figure 12 is the method flow diagram of interruption subroutine in detection method in the present invention；
Wherein：
The signal pre-processing module of 1 signalling channel switching control module 2
The AD acquisition modules of 3 signal comparison module 4
The communication module of 5 main control chip 6
The power supply module of 7 memory module 8
9 passages switch the road signaling interface of chip 10 20
11 No. I amplifier chips, 12 No. II amplifier chips
The AD acquisition chips of 13 comparable chip 14
15 No. I isolating chips, 16 No. II isolating chips
The storage chip of 17 CAN driver 18
The K7805 chips of 19 WRA2412S chips 20
21 TPS767D301 chips.
Embodiment
Hereinafter, referring to the drawings and embodiment the present invention is described in detail：
As shown in figure 1, a kind of multi-channel detection device based on DSP, including receive 20 tunnel measured signals and it is divided
The signalling channel switching control module 1 and power supply power supply module 8 of group, the signalling channel switching control module 1, which will be grouped, to be believed
Number incoming coupled signal pre-processing module 2 of synchronization, the signal pre-processing module 2 is gathered with signal comparison module 3, AD
Module 4 is connected, and the signal comparison module 3, AD acquisition modules 4 and main control chip 5, the main control chip 5 pass through communication module
6, CAN communication network is accessed, and upper location supervisory is connected into, the main control chip 5 is also run with storage rotating machinery
The memory module 7 of the threshold value of parameter is connected.
The communication module 6 is CAN communication module, and the detection means of the access CAN communication network has unique knowledge
Other address, the identification information of device is stored in memory module 7.
As shown in Fig. 2 in the signalling channel switching control module 1 include main control chip 5, main control chip 5 26,25,
1,16,15 pins of 24 pins respectively in order with four passage switching chips 9 are connected, the 11 pins output mark of main control chip 5
Accurate PWM square waves, 11 pins for switching chips 9 with four passages respectively are connected, 1~20 pin and four of 20 road signaling interfaces 10
4,5,6,7,12 pins of piece passage switching chip 9 are respectively connected with successively.8 pins of four passage switching chips 9 are respectively four
Output signal after the completion of the switching of road.
The signalling channel switching control module 1, is responsible for realizing measured signal and standard letter under the control of main control chip
Switching between number and the switching to 20 tunnel measured signals.
The gating signal of main control chip 5 and the corresponding relation that passage switches chip select signal passage are as shown in table 1：
The passage of table 1 switches chip and signalling channel corresponding table
As shown in figure 3, the signal pre-processing module 2 includes four identical pretreatment circuits, the pretreatment circuit
In 8,4 pins of No. I amplifier chip 11 meet+12V, -12V respectively, be sequentially connected in series between 2 pins and ground of No. I amplifier chip 11
Enter R1, C1, L1, L2, C2, R2 that the IN signals selected through signalling channel switching control module pass sequentially through series connection enter amplifier core
3 pins of piece, while 3 pins of No. I amplifier chip 11 are grounded by R3,1 pin of No. I amplifier chip 11 is pretreated
Signal output pin, 1 pin of No. I amplifier chip 11 is connected by resistance R4 with 2 pins, and 1 pin of No. I amplifier chip 11 is defeated
The signal OUT2 entering signals comparison module 3 gone out, the signal OUT1 that 1 pin of No. I amplifier chip 11 is exported after resistance R5 enters
Enter AD acquisition modules 4.
As shown in figure 4, including four identical signal comparator circuits, Signal Pretreatment mould in the signal comparison module 3
The signal OUT2 that block 2 is exported enters 3 pins of No. II amplifier chip 12,8,4 pins of No. II amplifier chip 12 by resistance R6
Connect respectively 3.3V,.1,2 pins of No. II amplifier chip 12, which are connected, enters 3 pins of comparable chip 13 through resistance R7, compares core
8,4 pins of piece 13 connect respectively 3.3V, 3.3V with connect resistance R9, R10 be connected, be connected to ground, formation electric resistance partial pressure,
The R10 other end is connected with 2 pins of comparable chip 13, and 3.3V is connected through resistance R8 with 1 pin of comparable chip, comparable chip
13 1 pin is output as square-wave signal and is directly entered the detection that main control chip 5 carries out rotating speed.
Signal comparison module circuit, it is main to be responsible for completing the square-wave signal that sine wave signal is converted into same frequency, to meet
Detection of the main control chip 5 to signal.
As shown in figure 5, the AD acquisition modules 4 include AD acquisition chips 14,1 pin of AD acquisition chips 14 meets -12V,
48 pins meet+12V, 8~13 pins and 34~41 pins respectively with main control chip 5 18,19,20,21,2,6,175,7,174,
11st, 12,13,16,17 pins are connected, and the output signal of AD acquisition chips 14 uses parallel output, 16~23 pins and 26~33
115,116,122,123,124,126~136 pins of the pin respectively with main control chip are connected.
AD acquisition module circuits, are mainly responsible for converting analog signals into data signal.
As shown in fig. 6, the communication module 6 includes No. I isolating chip 15, No. II isolating chip 16, CAN driver
17,1 pin of No. I isolating chip 15 meets 3.3V, and 6 pins meet+5V, and resistance R12 connections are leaned between 5 pins and 6 pins, and 4 pins connect
Ground, 5 pins are connected with 1 pin of CAN driver 17, the 176 pin phases that 3 pins pass through resistance R11 and main control chip 15
Even, the 4 pins ground connection of No. II isolating chip 16,1 pin meets+5V, and 6 pins meet 3.3V, connect between 5 pins and 6 pins by resistance R14
Connect, 3 pins are connected by resistance R15 with 4 pins of CAN driver 17,5 pins are connected with 1 pin of main control chip 5,
The 2 pins ground connection of the CAN driver 17,3 pins meet+5V, and 8 pins are grounded by resistance R13, and 6,7 pins connect respectively
Enter the CANL and CANH of CAN communication network.
Communication module circuit, the transmission of the main reception and data for being responsible for completing instruction.
As shown in fig. 7, the memory module 7 includes storage chip 18,1,2,3,4,7 pins of storage chip 18 are grounded, 8
Pin meets 3.3V, and 6 pins meet 3.3V by resistance R15, and 5 pins meet 3.3V by resistance R16, and 5 pin of storage chip 18 meet master
74 pin of chip 5 are controlled, 6 pin connect 75 pin of main control chip 5.
The storage of memory module circuit, mainly finishing device address, threshold value and abnormal operational conditions measurement parameter.
As shown in figs. 8-10, the power supply module 8 includes WRA2412S chips 19, K7805 chips 20, TPS767D301
Chip 21, the 1 pin ground connection of WRA2412S chips 19,2 pins meet+24V, and 1,2 pins are connected by electric capacity C3, and the output of 6 pins+
12V, 8 pin output -12V, 7 pins ground connection, 6,7 pins are connected by electric capacity C4, and 7,8 pins are connected by electric capacity C5；K7805
1 pin of chip 20 meets+24V, and 2 pins ground connection, 3 pin output+5V, 1,2 pins are connected by electric capacity C6, and 2,3 pins pass through
Electric capacity C7 is connected；5,6,11,12 pins of TPS767D301 chips 21 connect+5V, 3,9 pins ground connection, the output of 17,18 pins
3.3V, 23,24 pins output 1.9V.
As shown in figure 11, the detection method of multi-channel detection device of any one above-mentioned based on DSP, including following step
Suddenly：
(I) starts S1
(II) each module initialization S2
Device carries out the initialization of each peripheral functionality module to main control chip 5 first after starting, and reads the present apparatus
The address of storage and threshold information；
(III) device hardware signal path self-inspection S3
The hardware signal path of device is detected, the standard PWM square waves of fixed frequency are exported by main control chip 5,
The PWM square-wave signals are gated by signalling channel switching control module 1, four road sense channels are passed to；By judging detection
As a result whether normal detection means hardware signal path is carried out
(IV) judges that self-inspection passes through S4
Whether judgment means hardware signal path is normal, normally then starts detection into step (V), if abnormal
Into step (X I)；
(V) judges whether quick tachometric survey S5
Enter step (VI) if quick tachometric survey is carried out, then enter step (VII) without quick tachometric survey；
(VI) only carries out tachometric survey S6
Quick tachometric survey is the measurement for only carrying out rotary speed parameter, does not detect other parameters, is posted by reading eCAP peripheral hardwares
Numerical computations in storage draw the rotary speed parameter of the 4 road signals currently gated, then switching channel, open next group of 4 roads letter
Number, Rotating speed measring is carried out successively, until all measurement is finished 5 groups of signal rotating speeds；
(VII) judges whether to reach specified rotating speed S7
Enter step (VIII) if specified rotating speed is reached, step (V) is entered if not up to rotating speed is specified；
(VIII) speed vibration amplitude measures S8 simultaneously
The measurement of row amplitude and rotating speed is entered to 4 road signals of gating first, the rotating speed of remaining 16 road signal is then measured；
Whether (IV) inquiry has communication instruction S9
If communication instruction then enters step (X), switched to if without communication instruction into step (V) next
Batch is measured；
(X) interruption subroutine S10
Perform interruption subroutine；
(X I) dispensing device operation irregularity information S11
(X II) terminates S12.
As shown in figure 12, the interruption subroutine comprises the following steps：
(X III) starts S13
(X IV) judges whether communication time time-out S14
Enter step (X V) if beyond the communication response time, step is entered if without departing from the communication response time
(ⅹⅵ)；
(X V) shows communication abnormality S15
Alarm and show communication abnormality；
(X VI) inquiry CAN mailboxes receive instruction S16
Whether inquiry present apparatus CAN mailboxes receive the instruction of upper location supervisory, and step is entered if being not received by
Suddenly (II X), step (X VII) is entered if new command is received；
(X VII) judges whether that address matches S17 with the present apparatus
Enter step (II X) if the address in instruction is mismatched with the present apparatus, if the address in instruction and this dress
Put matching and then enter step (X VIII)；
(X VIII) obtains communication data and parses S18
(X IV) performs corresponding operating and returned data S19 according to instruction
(II X) terminates S20.
Cost performance of the present invention is high, can be achieved to detect 20 rotating machinery rotating speeds and the synchronous of amplitude；It can realize
The self-inspection of hardware signal path, finds device faults itself during use in time；
Its identification address in communication network can be stored, and online modification, inquiry unit identification address can be realized, is carried
The high versatility and interchangeability of device；The threshold value of rotating machinery operational factor can be stored, and in its running status ginseng
When number exceeds threshold range, saving scene data supply follow-up rotating machinery running state analysis.
Claims (10)
1. a kind of multi-channel detection device based on DSP, including receive 20 tunnel measured signals and the signalling channel being grouped to it
Switching control module（1）With power supply power supply module（8）, it is characterised in that：The signalling channel switching control module（1）It will divide
Organize signal synchronously incoming coupled signal pre-processing module（2）, the signal pre-processing module（2）With signal comparison module
（3）, AD acquisition modules（4）It is connected, the signal comparison module（3）, AD acquisition modules（4）With main control chip（5）, the master control
Chip（5）Pass through communication module（6）, CAN communication network is accessed, and be connected into upper location supervisory, the main control chip（5）Also
With the memory module for the threshold value for storing rotating machinery operational factor（7）It is connected.
2. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The communication module（6）
For CAN communication module, the detection means of the access CAN communication network has unique identification address, the identification information of device
It is stored in memory module（7）In.
3. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The signalling channel is cut
Change control module（1）In include main control chip（5）, main control chip（5）26,25,24 pins respectively in order with four passages
Switch chip（9）1,16,15 pins be connected, main control chip（5）11 pin outputting standards PWM square waves, respectively with four
Passage switches chip（9）11 pins be connected, 20 road signaling interfaces（10）1 ~ 20 pin and four passages switching chips（9）'s
4th, 5,6,7,12 pins are respectively connected with successively, and four passages switch chip（9）8 pins be respectively four tunnels switching after the completion of it is defeated
Go out signal.
4. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The Signal Pretreatment
Module（2）No. I amplifier chip in circuits, the pretreatment circuit is pre-processed comprising four identicals（11）8,4 pins difference
Meet+12V, -12V, No. I amplifier chip（11）2 pins and ground between be sequentially connected in series into R1, C1, L1, through signalling channel switch control
The IN signals of molding block selection pass sequentially through L2, C2, R2 of series connection into 3 pins of amplifier chip, while No. I amplifier chip
（11）3 pins be grounded by R3, No. I amplifier chip（11）1 pin be pretreated signal output pin, No. I amplifier
Chip（11）1 pin be connected by resistance R4 with 2 pins, No. I amplifier chip（11）1 pin output signal OUT2 enter
Signal comparison module（3）, No. I amplifier chip（11）The signal OUT1 that is exported after resistance R5 of 1 pin enter AD acquisition modules
（4）.
5. a kind of multi-channel detection device based on DSP according to claim 4, it is characterised in that：The signal compares mould
Block（3）In include four identical signal comparator circuits, signal pre-processing module（2）The signal OUT2 of output enters by resistance R6
Enter No. II amplifier chip（12）3 pins, No. II amplifier chip（12）8,4 pins connect respectively 3.3V, No. II amplifier chip
（12）1,2 pins be connected enter comparable chip through resistance R7（13）3 pins, comparable chip（13）8,4 pins connect respectively
3.3V, 3.3V is connected with resistance R9, R10 for connecting, is connected to ground, and forms electric resistance partial pressure, the R10 other end is with being compared core
Piece（13）2 pins be connected, 3.3V is connected through resistance R8 with 1 pin of comparable chip, comparable chip（13）1 pin output
Main control chip is directly entered for square-wave signal（5）Carry out the detection of rotating speed.
6. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The AD acquisition modules
（4）Including AD acquisition chips（14）, AD acquisition chips（14）1 pin meet -12V, 48 pins meet+12V, 8 ~ 13 pins and 34 ~
41 pins are respectively and main control chip（5）18,19,20,21,2,6,175,7,174,11,12,13,16,17 pins be connected, AD
Acquisition chip（14）Output signal use parallel output, 16 ~ 23 pins and 26 ~ 33 pins respectively with main control chip 115,
116th, 122,123,124,126 ~ 136 pins are connected.
7. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The communication module（6）
Including No. I isolating chip（15）, No. II isolating chip（16）, CAN driver（17）, No. I isolating chip（15）1 pin
3.3V is met, 6 pins meet+5V, resistance R12 connections, 4 pins ground connection, 5 pins and CAN driver are leaned between 5 pins and 6 pins
（17）1 pin be connected, 3 pins pass through resistance R11 and main control chip（15）176 pins be connected, No. II isolating chip（16）
4 pins ground connection, 1 pin meets+5V, and 6 pins meet 3.3V, and resistance R14 connections are leaned between 5 pins and 6 pins, and 3 pins pass through resistance
R15 and CAN driver（17）4 pins be connected, 5 pins and main control chip（5）1 pin be connected, the CAN is driven
Dynamic device（17）2 pins ground connection, 3 pins meet+5V, and 8 pins are grounded by resistance R13, and 6,7 pins are respectively connected to CAN communication net
The CANL and CANH of network.
8. a kind of multi-channel detection device based on DSP according to claim 1, it is characterised in that：The memory module（7）
Including storage chip（18）, storage chip（18）1,2,3,4,7 pins ground connection, 8 pins meet 3.3V, and 6 pins pass through resistance R15
3.3V is met, 5 pins meet 3.3V, storage chip by resistance R16（18）5 pin connect main control chip（5）74 pin, 6 pin connect master control
Chip（5）75 pin.
9. the detection method of any one multi-channel detection device based on DSP according to claim 1 ~ 8, its feature exists
In：Comprise the following steps：
（ⅰ）Start
（ⅱ）Each module initialization
First to main control chip after device startup（5）The initialization of each peripheral functionality module is carried out, and reads the present apparatus depositing
The address of storage and threshold information；
（ⅲ）Device hardware signal path self-inspection
The hardware signal path of device is detected, passes through main control chip（5）The standard PWM square waves of fixed frequency are exported, are led to
Cross signalling channel switching control module（1）The PWM square-wave signals are gated, four road sense channels are passed to；By judging detection
As a result whether normal detection means hardware signal path is carried out
（ⅳ）Judge that self-inspection passes through
Whether judgment means hardware signal path is normal, normally then enters step（ⅴ）Start detection, enter if abnormal
Step（ⅹⅰ）；
（ⅴ）Judge whether quick tachometric survey
Enter step if quick tachometric survey is carried out（ⅵ）, then enter step without quick tachometric survey（ⅶ）；
（ⅵ）Only carry out tachometric survey
Quick tachometric survey is the measurement for only carrying out rotary speed parameter, other parameters is not detected, by reading eCAP peripheral hardware registers
In numerical computations draw the rotary speed parameters of the 4 road signals currently gated, then switching channel, opens next group of 4 road signals, according to
Secondary carry out Rotating speed measring, until all measurement is finished 5 groups of signal rotating speeds；
（ⅶ）Judge whether to reach specified rotating speed
Enter step if specified rotating speed is reached（ⅷ）, step is entered if not up to rotating speed is specified（ⅴ）；
（ⅷ）Speed vibration amplitude is measured simultaneously
The measurement of row amplitude and rotating speed is entered to 4 road signals of gating first, the rotating speed of remaining 16 road signal is then measured；
（ⅸ）Whether inquiry has communication instruction
If communication instruction then enters step（ⅹ）, step is entered if without communication instruction（ⅴ）Switch to next batch
Measure；
（ⅹ）Interruption subroutine
Perform interruption subroutine；
（ⅹⅰ）Dispensing device operation irregularity information
（ⅹⅱ）Terminate.
10. a kind of detection method of multi-channel detection device based on DSP according to claim 9, it is characterised in that：It is described
Interruption subroutine comprises the following steps：
（ⅹⅲ）Start
（ⅹⅳ）Judge whether communication time time-out
Enter step if beyond the communication response time（ⅹⅴ）, step is entered if without departing from the communication response time（ⅹ
ⅵ）；
（ⅹⅴ）Show communication abnormality
Alarm and show communication abnormality；
（ⅹⅵ）Inquiry CAN mailboxes receive instruction
Whether inquiry present apparatus CAN mailboxes receive the instruction of upper location supervisory, and step is entered if being not received by（ⅱ
ⅹ）, step is entered if new command is received（ⅹⅶ）；
（ⅹⅶ）Judge whether that address is matched with the present apparatus
Enter step if the address in instruction is mismatched with the present apparatus（ⅱⅹ）If, address and the present apparatus in instruction
With then into step（ⅹⅷ）；
（ⅹⅷ）Obtain communication data and parse
（ⅹⅸ）Corresponding operating and returned data are performed according to instruction
（ⅱⅹ）Terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195398.2A CN106941531B (en) | 2017-03-29 | 2017-03-29 | Multipath detection device based on DSP and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195398.2A CN106941531B (en) | 2017-03-29 | 2017-03-29 | Multipath detection device based on DSP and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106941531A true CN106941531A (en) | 2017-07-11 |
| CN106941531B CN106941531B (en) | 2023-08-01 |
Family
ID=59463952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195398.2A Active CN106941531B (en) | 2017-03-29 | 2017-03-29 | Multipath detection device based on DSP and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106941531B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107613288A (en) * | 2017-09-25 | 2018-01-19 | 北京世纪东方通讯设备有限公司 | A kind of group technology and system for diagnosing multiple paths of video images quality |
| CN110989465A (en) * | 2019-12-25 | 2020-04-10 | 核工业理化工程研究院 | Distributed intelligent signal acquisition device |
| CN112202505A (en) * | 2020-11-11 | 2021-01-08 | 核工业理化工程研究院 | Tester and method based on embedded equipment monitoring device |
| CN113433846A (en) * | 2021-05-24 | 2021-09-24 | 核工业理化工程研究院 | Modular combined type frequency converter power module control board based on DSP |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202018346U (en) * | 2011-04-18 | 2011-10-26 | 北京航天正信科技有限公司 | Temperature acquisition module with automatic fault diagnosis function |
| CN103645730A (en) * | 2013-12-09 | 2014-03-19 | 成都乐创自动化技术股份有限公司 | Motion control card with self-checking function and detection method |
| CN103914044A (en) * | 2014-03-26 | 2014-07-09 | 北方信息控制集团有限公司 | Intelligent online monitoring protection device |
| CN104483011A (en) * | 2014-11-07 | 2015-04-01 | 南京理工大学紫金学院 | Rotary machinery multichannel vibration signal on-line detection and analysis system and method |
-
2017
- 2017-03-29 CN CN201710195398.2A patent/CN106941531B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202018346U (en) * | 2011-04-18 | 2011-10-26 | 北京航天正信科技有限公司 | Temperature acquisition module with automatic fault diagnosis function |
| CN103645730A (en) * | 2013-12-09 | 2014-03-19 | 成都乐创自动化技术股份有限公司 | Motion control card with self-checking function and detection method |
| CN103914044A (en) * | 2014-03-26 | 2014-07-09 | 北方信息控制集团有限公司 | Intelligent online monitoring protection device |
| CN104483011A (en) * | 2014-11-07 | 2015-04-01 | 南京理工大学紫金学院 | Rotary machinery multichannel vibration signal on-line detection and analysis system and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107613288A (en) * | 2017-09-25 | 2018-01-19 | 北京世纪东方通讯设备有限公司 | A kind of group technology and system for diagnosing multiple paths of video images quality |
| CN107613288B (en) * | 2017-09-25 | 2019-06-25 | 北京世纪东方通讯设备有限公司 | A kind of group technology and system diagnosing multiple paths of video images quality |
| CN110989465A (en) * | 2019-12-25 | 2020-04-10 | 核工业理化工程研究院 | Distributed intelligent signal acquisition device |
| CN112202505A (en) * | 2020-11-11 | 2021-01-08 | 核工业理化工程研究院 | Tester and method based on embedded equipment monitoring device |
| CN113433846A (en) * | 2021-05-24 | 2021-09-24 | 核工业理化工程研究院 | Modular combined type frequency converter power module control board based on DSP |
| CN113433846B (en) * | 2021-05-24 | 2022-10-28 | 核工业理化工程研究院 | Modular combined type frequency converter power module control board based on DSP |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106941531B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106941531A (en) | A kind of multi-channel detection device and its detection method based on DSP | |
| CN206894691U (en) | A kind of multi-channel detection device based on DSP | |
| CN101414803B (en) | Method and apparatus for recognizing multi-speed motor gear based on voltage mutual inductance technology | |
| CN105116238B (en) | A kind of subway train analog input and output module test system and its method of testing | |
| CN113965591B (en) | Partition cloud platform in-network operation method and system based on intelligent gas meter | |
| CN104865493A (en) | CELL panel open-short circuit detection device and method | |
| CN102183737A (en) | Multi-channel and multi-parameter automatic verification system and automatic verification method | |
| CN204101671U (en) | A kind of Novel multi-core cable tester | |
| CN201215564Y (en) | Electronic instrument type speed sensor detection platform for automobile and motorcycle | |
| CN104849086B (en) | Multi-channel detection instrument based on DSP | |
| CN101227518B (en) | ADSL/VDSL segregator multi module automatic detection system | |
| CN102033203B (en) | Judging method and detection device for running state fault of motor | |
| CN105388766B (en) | For detecting the detecting system and detection method of more rotation speed monitors | |
| CN112630579A (en) | Aging test method and system for servo driver | |
| CN111751646A (en) | Electric automobile offline detection system and method | |
| CN112229566B (en) | Bus pressure transmitter detection method and system | |
| CN104977048A (en) | FCT automatic testing method for air conditioner | |
| CN105300199B (en) | RS-422/485 communication test monitoring device and method for guided missile automatic testing | |
| CN112924782A (en) | Communication power supply box controller detection equipment and detection method thereof | |
| CN202383211U (en) | Control system used for frequency converter whole machine tester | |
| CN109085500A (en) | A kind of detection test macro of direct current generator current ripples parameter | |
| CN110514865A (en) | A kind of Multi-path synchronous measures the portable tester of rotating machinery revolving speed and amplitude | |
| CN106404404B (en) | Device for testing rotating speed and its test method under a kind of aero-engine operating status | |
| CN105067031A (en) | Multichannel numerical control machine tool energy consumption data acquisition bench | |
| CN105865815B (en) | EMU brake tester endpoint detection system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |