CN206019897U - A kind of bolt strained detection device and system - Google Patents
A kind of bolt strained detection device and system Download PDFInfo
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- CN206019897U CN206019897U CN201620908968.9U CN201620908968U CN206019897U CN 206019897 U CN206019897 U CN 206019897U CN 201620908968 U CN201620908968 U CN 201620908968U CN 206019897 U CN206019897 U CN 206019897U
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- 238000011897 real-time detection Methods 0.000 abstract description 9
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- 230000005540 biological transmission Effects 0.000 description 6
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Abstract
This application provides a kind of bolt strained detection device and system, including multi-group data collecting unit, n sensor in every group of data acquisition unit detects the stress size of n bolt, and export n pressure signal, data analysis circuit receives the n pressure signal, the n pressure signal is amplified and is converted to n pressure value, and the n pressure value is stored, the n pressure value is exported by CAN port.The n pressure value represents the stressing conditions of bolt, by sensor and data analysis circuit, is capable of the stressing conditions of real-time detection bolt, solves the problems, such as to be unable to the bolt strained situation of real-time detection.
Description
Technical field
The utility model is related to wind-driven generator field, more particularly, it relates to a kind of bolt strained detection device and be
System.
Background technology
As the quantity of wind power generating set constantly rises, the bolt fault rate of wind power generating set is into ascendant trend.Cause
The phenomenon that leaf abscission that bolt fracture is caused, unit collapse or long-time is shut down is increasingly severe.
Periodically bolt is detected, can interpolate that whether bolt loosens, it is ensured that the safe and reliable work of bolt.Current state
Interior using sampling observation wind power generating set by the way of, periodically bolt is detected, the stressing conditions of bolt are obtained.Typically half a year
Or carry out single sampling inspection in 1 year, by the way of the bolt strained situation of periodic detection, it is impossible to understand the stress feelings of bolt in real time
Condition.
Therefore, a kind of device for being capable of the bolt strained situation of real-time detection is needed badly.
Utility model content
For solution must not the bolt strained situation of real-time detection problem, the utility model provides a kind of bolt strained detection dress
Put and system.
For achieving the above object, the utility model provides following technical scheme：
A kind of bolt strained detection device, including：
Multi-group data collecting unit；
Wherein, every group of data acquisition unit includes：
Detect the stress size of n bolt respectively, and export n pressure letter of the stress size for reflecting the n bolt
Number n sensor；
It is connected with the n sensor respectively, for receiving the n pressure signal, carrying out the n pressure signal
The data analysis circuit that amplifies and be converted to n pressure value and the n pressure value is stored；N is positive integer；
It is connected with the data analysis circuit, for exporting the CAN port of the n pressure value.
Preferably, the data analysis circuit includes：
It is connected with the n sensor respectively, for receiving the n pressure signal and entering the n pressure signal
The signal conditioning circuit that row amplifies；
Be connected with the signal conditioning circuit, for receive n pressure signal after the amplification and by the amplification after
N pressure signal be converted to the analog to digital conversion circuit of n pressure value；
It is connected with analog-digital conversion circuit as described, for receiving the n pressure value and by the n every Preset Time
The control circuit of pressure value storage.
Preferably, the CAN port is connected with the control circuit, for receiving the institute of the control circuit output
State n pressure value.
A kind of bolt strained detecting system, including the detection means described in above-mentioned any one, and data processing unit；
Wherein,
Data processing unit, is connected with the CAN port in every group of data acquisition unit of the detection means,
Defeated to every group of data acquisition unit and/or the reception CAN port for sending sampling pulse every the specified time
The n pressure value for going out.
Preferably, the data processing unit, including：
The real time clock unit of clock signal is provided；
Be connected with the real time clock unit, for according to the clock signal every the specified time send sampling pulse to
The process circuit of the n pressure value of every group of data acquisition unit and/or the reception CAN port output.
Preferably, the process circuit includes micro-control unit and peripheral drive circuit.
Preferably, also include：
It is connected with the process circuit, for judging there is a pressure value in the n pressure value when the process circuit
Not regulation pressure limit in after output high level when, send warning sound warning circuit.
Preferably, the signal conditioning circuit includes six road full bridge signal modulate circuits.
Preferably, also include：
It is connected, is used for the interface of data transfer with the process circuit.
Preferably, the interface includes 485 interfaces, CAN interface and network interface.
From above-mentioned technical proposal as can be seen that the utility model provides a kind of bolt strained detection device and system, bag
Multi-group data collecting unit is included, n sensor in every group of data acquisition unit detects the stress size of n bolt, and exports n
Individual pressure signal, data analysis circuit receive the n pressure signal, are amplified and are converted to n the n pressure signal
Individual pressure value, and the n pressure value is stored, the n pressure value is exported by CAN port.The n pressure value be
The stressing conditions of bolt are represented, by sensor and data analysis circuit, is capable of the stressing conditions of real-time detection bolt, is solved
It is unable to the problem of the bolt strained situation of real-time detection.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing for providing.
Fig. 1 is the structural representation of the data acquisition unit in the utility model；
Fig. 2 is the structural representation of the data processing unit in the utility model；
Fig. 3 is the structural representation of the bolt strained detecting system in the utility model；
Fig. 4 is the structural representation of the tower in the utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Embodiment in based on the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
The utility model provides a kind of bolt strained detection device, including：
Multi-group data collecting unit；
Wherein, every group of data acquisition unit includes：
Detect the stress size of n bolt respectively, and export n pressure letter of the stress size for reflecting the n bolt
Number n sensor；
It is connected with the n sensor respectively, for receiving the n pressure signal, carrying out the n pressure signal
The data analysis circuit that amplifies and be converted to n pressure value and the n pressure value is stored；N is positive integer；
It is connected with the data analysis circuit, for exporting the CAN port of the n pressure value.
It should be noted that the sensor includes resistive pressure sensor, meanwhile, the resistive pressure sensor
For four core joints, the quantity of pressure sensor described in every group of data acquisition unit at least four, preferably six pressure sensings
Device.
Wherein, data analysis circuit includes：
It is connected with the n sensor respectively, for receiving the n pressure signal and entering the n pressure signal
The signal conditioning circuit that row amplifies；
Be connected with the signal conditioning circuit, for receive n pressure signal after the amplification and by the amplification after
N pressure signal be converted to the analog to digital conversion circuit of n pressure value；
It is connected with analog-digital conversion circuit as described, for receiving the n pressure value and by the n every Preset Time
The control circuit of pressure value storage.
It should be noted that signal conditioning circuit includes that six road full bridge signal modulate circuits, the control circuit include list
Piece machine and its associated driver circuitry.Analog to digital conversion circuit includes 12 analog to digital conversion circuits, and theoretical resolution is 2.44uV.
Each data acquisition unit can preserve the power failure data of a hour or so, can also in the case of power down
It is operated.
Optionally, in another embodiment of the present utility model,
The CAN port is connected with the control circuit, for receiving the n pressure of the control circuit output
Force value.
For understanding the utility model that those skilled in the art becomes more apparent, now explained according to Fig. 1
Bright.It should be noted that Fig. 1 is only a data acquisition unit.
Data acquisition unit includes four core connecting sensors 11, four core connecting sensors 12, four core connecting sensors 13, four
Core connecting sensor 14, four core connecting sensors 15, four core connecting sensors 16, six road full-bridge precision actuation circuits 21, DC/DC
With LDO power-supply systems 31, six road full bridge signal modulate circuits 41, analog to digital conversion circuit 51, single-chip microcomputer and its associated driver circuitry
61st, CAN interface and protection circuit 71, CAN port 81, CAN port 82 and indicator lamp 91.Wherein, CAN port
81 include power connection 811, CAN joints 812 and synchronous connector 813.CAN port 82 includes that power connection 821, CAN connects
822 and synchronous connector 823.The joint quantity of power connection 811 and power connection 821 is respectively two, 812 He of CAN joints
The joint quantity of CAN joints 822 is two respectively, and the joint quantity of synchronous connector 813 and synchronous connector 823 is two respectively,
It should be noted that CAN port 81 and CAN port 82 also include an earth connection point respectively, it is not drawn in figure.
Power connection 811 is connected with power connection 821, and CAN joints 812 are connected with CAN joints 822, synchronous connector 813 with
Synchronous connector 813 connects, and it is for data transfer to arrange CAN port 81 and CAN port 82.
In Fig. 1, the course of work of all parts is：
DC/DC is connected to power connection 811 with 31 one end of LDO power-supply systems, and the other end passes through six road full-bridge precision actuations
Circuit 21 to four core connecting sensors 11, four core connecting sensors 12, four core connecting sensors 13, four core connecting sensors 14,
Four core connecting sensors 15 and four core connecting sensor 16 provide 5V dc sources.
Four core connecting sensors 11, four core connecting sensors 12, four core connecting sensors 13, four core connecting sensors 14,
After four core connecting sensors 15 and four core connecting sensors 16 work on power, four core connecting sensors 11 of collection, four core joints are passed
16 points of sensor 12, four core connecting sensors 13, four core connecting sensors 14, four core connecting sensors 15 and four core connecting sensors
The stress size of not corresponding bolt, after the completion of collection, obtains six pressure signals.Output pressure due to four core connecting sensors
, between -20～20mV, magnitude of voltage is less for the voltage of force signal, and six pressure signals are input to six road full-bridge letters now
It is amplified in number modulate circuit 41, after the completion of signal amplifies, output to analog to digital conversion circuit 51 is converted into six pressure values.
Single-chip microcomputer and its associated driver circuitry 61 are receiving six pressure values every Preset Time and are storing, wherein, Preset Time
By manually being set, different Preset Times can be set according to different use scenes.
The pressure value of storage is exported by single-chip microcomputer and its associated driver circuitry 61 by CAN interface and protection circuit 71
CAN joints 812 and CAN joints 822, arrive ambient systems by CAN joints 812 and the output of CAN joints 822.CAN is
The abbreviation (hereinafter referred to as CAN) of Controller Area Network, is the serial communication protocol of ISO International standardizations.Pressure
Value is exported by CAN joints 812 and CAN joints 822.
CAN joints used in the present embodiment, ensure that data transfer and command synchronization, meet the requirement of communication configuration.
In addition to including above-mentioned part, each data acquisition unit also includes that indicator lamp 91, indicator lamp 91 are used for showing number
According to the working condition of collecting unit, wherein, indicator lamp 91 has the lamp of three kinds of colors, respectively red colored lamp, green light and yellow
Lamp, represents when red colored lamp is bright that data acquisition unit has inserted power supply, represents that data acquisition unit works when green light is bright, yellow
Represent when colored lights is bright that data acquisition unit breaks down.Synchronous connector 813 and synchronous connector 823 can transmit other signals.
A kind of bolt strained detection device is provided in the present embodiment, including multi-group data collecting unit, every group of data are adopted
N sensor in collection unit detects the stress size of n bolt, and exports n pressure signal, and data analysis circuit receives institute
N pressure signal is stated, the n pressure signal is amplified and is converted to n pressure value, and the n pressure value is deposited
Storage, the n pressure value is exported by CAN port.The n pressure value represents the stressing conditions of bolt, by sensing
Device and data analysis circuit, are capable of the stressing conditions of real-time detection bolt, solve and are unable to the bolt strained situation of real-time detection
Problem.
After the stressing conditions of real-time detection bolt, can reduce the number of stoppages and downtime that bolt failure causes, drop
Low because bolt fracture cause fall tower, become the risk of the secondary harms such as oar cabinet is damaged, slip ring is damaged, lift wind-driven generator
The reliability of the bolt of group, improves the market competitiveness.Avoid mode of the tradition using hydraulic spanner simultaneously, do not needing to pay
The equipment rental charge of costliness, labour cost, decrease the degree of artificial participation, reduce human error rate.
Optionally, a kind of bolt strained detecting system is provided in another embodiment of the present utility model, including above-mentioned
Detection means, and data processing unit；Wherein,
Data processing unit, is connected with the CAN port in every group of data acquisition unit of the detection means,
Defeated to every group of data acquisition unit and/or the reception CAN port for sending sampling pulse every the specified time
The n pressure value for going out.
Specifically, signal conditioning circuit includes that six road full bridge signal modulate circuits, the process circuit include microcontroller list
Unit and peripheral drive circuit.Micro-control unit (Microcontroller Unit；MCU), also known as one chip microcomputer
(Single Chip Microcomputer) or single-chip microcomputer, are central processing unit (Central Process Unit；
CPU frequency) and specification do appropriate reduction, and by internal memory (memory), counter (Timer), general-purpose serial bus USB, mould
The periphery such as number A/D conversions, universal asynchronous receiving-transmitting transmitter UART, programmable logic controller (PLC) PLC, direct memory access DMA
Interface, or even liquid crystal display LCD drive circuits are all incorporated on one chip, are formed the computer of chip-scale, are different
Do various combination control in application scenario.
Data processing unit is adopted every transmission of specified time sampling pulse to every group of data acquisition unit, now data
Single-chip microcomputer and its associated driver circuitry 61 in collection unit receives the pressure value of the output of analog to digital conversion circuit 51, is then output to count
According to processing unit, send when the purpose of sampling pulse is mainly played pair and act on, it is ensured that each data acquisition unit will be gathered
The time phase difference that the pressure value for obtaining is sent to data processing unit is less.Wherein, it is intended that the time is technical staff according to difference
Use scene set.
Optionally, in another embodiment of the present utility model, the data processing unit, including：
The real time clock unit of clock signal is provided；
Be connected with the real time clock unit, for according to the clock signal every the specified time send sampling pulse to
The process circuit of the n pressure value of every group of data acquisition unit and/or the reception CAN port output.
Wherein, real-time clock (Real-Time Clock) is crystal oscillator and the interlock circuit group on personal computer PC mainboard
Into clock circuit generation pulse, RTC through 8254 circuits frequency conversion produce frequency more relatively low OS (system) when
Clock TSC, system clock each central processing unit cpu cycles add one, each system clock system from the beginning of when by RTC initial
Change.
Optionally, in another embodiment of the present utility model, bolt strained detecting system also includes：
It is connected with the process circuit, for judging there is a pressure value in the n pressure value when the process circuit
Not regulation pressure limit in after output high level when, send warning sound warning circuit.
Be connected with the process circuit, for data transfer interface, wherein, interface include 485 interfaces, CAN interface and
Network interface.
It should be noted that arrange the effect of warning circuit mainly when bolt strained more than preset value when, remind in time
Technical staff is checked, is prevented from breaking down.
The process circuit, additionally it is possible to according to the CAN port output in every group of data acquisition unit
The n pressure value exports bolt maintenance strategy.
Specifically, the CAN port for receiving in every group of data acquisition unit when the process circuit is defeated
After the n pressure value for going out, bolt maintenance strategy can be drawn according to stress amplitude method or the analysis of fatigue damage accumulation method.
Data processing unit can also pass through Process FieldbusROFIBUS and ambient systems such as PLC system, data acquisition and supervisor control
Whether SCADA connects, and receives unit operational factor, according to unit operation parameter and the pressure value of collection, judge pressure value pre-
If in the range of.
Wherein, stress amplitude refers to 1/2nd of the range of alternating stresses for being produced in fatigue test in the sample.Generally
The S-N curves of fatigue test are built using stress amplitude.
Fatigue damage accumulation refers to the damage that part is produced under alternate load, accumulates with the increase of cycle-index.
Formulate bolt maintenance strategy to specifically refer to：The stressing conditions of analysis bolt, draw the variation tendency of bolt load, sentence
Broken bolt occur fatigue fracture the reason for and reformulate the bolt time between overhauls(TBO), optimize bolt construction technique, evenly distribute spiral shell
The service load of bolt.
Bolt maintenance strategy is formulated primarily to reaching the purpose for avoiding bolt fracture and extending bolt life, from root
The reason for eliminating bolt fracture.
In order to those skilled in the art is more apparent from the structure of data processing unit, said in conjunction with Fig. 2
Bright, the whole circuit in Fig. 2 constitutes a data processing unit.
In Fig. 2, data processing unit includes 485 interfaces 101, CAN interface 102, network interface 103,485 interfaces and protection
Circuit 104, CAN interface and protection circuit 105, network interface and protection circuit 106, DC/DC and LDO power-supply systems 107, micro-control
Unit processed and peripheral drive circuit 108, RTC clock unit 109, power interface 110, CAN interface and protection circuit 111, instruction
Lamp 112 and CAN port 113.Wherein CAN port 113 includes power connection 1131, CAN joints 1132 and synchronously connects
1133.Wherein, CAN port 113 is connected with the CAN port 81 in Fig. 1, for the transmission of data.
In Fig. 2, the course of work of all parts is：
Micro-control unit and peripheral drive circuit 108 are received from CAN port 113 through CAN interface and protection circuit 111
In the pressure value that transmits of CAN joints 1132, bolt is drawn using stress amplitude method or the analysis of fatigue damage accumulation method
Maintenance strategy.Meanwhile, micro-control unit and peripheral drive circuit 108 can also be described in every group of data acquisition units
When having a pressure value not in the pressure limit of regulation in the n pressure value of CAN port output, the high electricity of output
Flat, when high level is exported, warning circuit can send warning sound, remind staff's on-call maintenance.Micro-control unit and outer
Enclose the transmission sampling pulse of synchronous connector 1133 that drive circuit 108 can also be in the time of specifying be by CAN port 113
Synchronous connector 813 and synchronous connector 823 in every group of data acquisition unit, and then it is transferred to single-chip microcomputer and its related drive
Dynamic circuit 61, when playing a part of pair.
DC/DC is connected power interface 110 and power connection 1131 respectively with LDO power-supply systems 107, for for whole circuit
Power supply.485 interfaces 101 are connected with micro-control unit and peripheral drive circuit 108 by 485 interfaces and protection circuit 104, CAN
Interface 102 is connected with micro-control unit and peripheral drive circuit 108 by CAN interface and protection circuit 105, network interface 103
It is connected with micro-control unit and peripheral drive circuit 108 by network interface and protection circuit 106.485 interfaces 101, CAN are set
Interface 102 and network interface 103 are primarily to the interface of the whole circuit of extension, can transmit more data.
RTC clock unit 109 is real time clock unit, arranges RTC clock unit 109 and mainly provides ginseng for whole circuit
Examine the time.
Indicator lamp 112 is used for the working condition of display data processing unit, and wherein, indicator lamp 112 has three kinds of colors
Lamp, respectively red colored lamp, green light and amber light, represent when red colored lamp is bright that data processing unit has inserted power supply, and green light is bright
When represent that data processing unit works, represent when amber light is bright that data processing unit breaks down.
In the present embodiment, by arranging micro-control unit and peripheral drive circuit 108, stress can be adopted according to pressure value
Amplitude method or the analysis of fatigue damage accumulation method draw bolt maintenance strategy.Bolt can be extended according to bolt maintenance strategy
Service life.Meanwhile, when in the n pressure value of the CAN port output in every group of data acquisition unit
When having a pressure value not in the pressure limit of regulation, warning circuit sends warning sound, reminds staff's maintenance bolt,
And micro-control unit and peripheral drive circuit 108 can also send sampling pulse every the specified time and adopt to every group of data
Collection unit, when playing a part of pair.
With reference to Fig. 3, two data acquisition units, respectively data acquisition unit 1 and data acquisition unit in Fig. 3, are contained
2, the internal structure in data acquisition unit 1 and data acquisition unit 2 is just the same, actually used in, have multiple data acquisitions
Unit, in order to principle of the present utility model is described in the present embodiment, only depicts two data acquisition units.
CAN port 81 in data acquisition unit 1 is connected with the CAN port 113 in data processing unit, number
It is connected with the CAN port 81 in data acquisition unit 2 according to the CAN port 82 in collecting unit 1.Joint is connected
Connect, primarily to can carry out data transmission.
After micro-control unit and peripheral drive circuit 108 work on power, sampling pulse can be sent to synchronous connector 1133
On, the CAN port 81 that is transferred to by CAN port 113 in data acquisition unit, by CAN port 81 in
Synchronous connector 813 be transferred to single-chip microcomputer and its associated driver circuitry 61, now single-chip microcomputer and its associated driver circuitry 61 will
Receive n pressure value of the output of analog-digital conversion circuit as described 51.
It should be noted that once sampling arteries and veins will be sent out every specified time, micro-control unit and peripheral drive circuit 108
Single-chip microcomputer and its associated driver circuitry 61 is flushed to, now single-chip microcomputer and its associated driver circuitry 61 will receive the analog-to-digital conversion
N pressure value of the output of circuit 51.Micro-control unit and peripheral drive circuit 108 send sampling pulse primarily to pair when,
Data acquisition unit and data processing unit are in data transmission procedure, and single-chip microcomputer and its phase in each data acquisition unit
Close drive circuit 61 and can there is regular hour error from the reception of analog to digital conversion circuit 51 pressure value, sending sampling pulse can
Make the uniformity of the work retention time of each data acquisition unit.
The pressure value that data acquisition unit 1 and data acquisition unit 2 are collected is sent to number by CAN port 81
According to carrying out data processing in processing unit, data acquisition unit and the specific course of work of data processing unit refer to above-mentioned
Introduction in embodiment.
In this enforcement, micro-control unit and peripheral drive circuit 108 send sampling pulse to single-chip microcomputer and its associated drives
Circuit 61, now single-chip microcomputer and its associated driver circuitry 61 will receive the pressure value of the output of analog-digital conversion circuit as described 51, energy
When enough playing a part of pair, it is ensured that the uniformity of the work retention time of each data acquisition unit.This embodiment describes number
According to collecting unit and the course of work of data processing unit, during specifically used, the data acquisition unit is arranged on
On flange, may be mounted on tower drum flange, spindle flange, wheelboss flange or blade flange.Referring in particular to Fig. 4.
There are multiple tower drum flanges 1111 in Fig. 4 in tower 1113, multiple bolts are installed on each tower drum flange 1111
1112, every several bolts 1112, a data acquisition unit is set, specifically, first tower drum flange 1111 arranges a number
According to collecting unit 1, wherein, in data acquisition unit 1, there are six sensors, each tower drum flange 1111 arranges a data acquisition
Unit, has four data acquisition units, respectively data acquisition unit 1, data acquisition unit 2, data acquisition unit 3 in figure
With data acquisition unit 4.Data acquisition unit 1, data acquisition unit 2, data acquisition unit 3 and data acquisition unit 4 are gathered
The pressure value for obtaining passes through CAN port transmission to data processing unit 1114, and then analysis obtains bolt maintenance strategy, with
And when pressure value not regulation pressure limit in when, export high level, when export high level when, warning circuit can send warning
Sound, reminds staff's on-call maintenance.The course of work of data acquisition unit and data processing unit refer to above-mentioned enforcement
Example, will not be described here.
All parts in the utility model are cryogenic device, and working limit can reach -35～65 degrees Celsius.
It should be noted that on each tower drum flange 1111, a data acquisition unit in the present embodiment, is provided with, when
When bolt quantity on tower drum flange 1111 is more, multiple data acquisition units, the number of concrete data acquisition unit can be set
Amount can be set according to specific bolt quantity.
In the present embodiment, data acquisition unit collects the stressing conditions of bolt, sends to data processing unit, can
Staff is made to understand the stressing conditions of bolt in time.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Multiple modifications of these embodiments will be apparent for those skilled in the art, determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of bolt strained detection device, it is characterised in that include：
Multi-group data collecting unit；
Wherein, every group of data acquisition unit includes：
Detect the stress size of n bolt respectively, and export the n of n pressure signal of the stress size for reflecting the n bolt
Individual sensor；
It is connected with the n sensor respectively, for receiving the n pressure signal, being amplified the n pressure signal
And the data analysis circuit for being converted to n pressure value and the n pressure value being stored；N is positive integer；
It is connected with the data analysis circuit, for exporting the CAN port of the n pressure value.
2. device according to claim 1, it is characterised in that the data analysis circuit includes：
It is connected with the n sensor respectively, for receiving the n pressure signal and putting the n pressure signal
Big signal conditioning circuit；
It is connected with the signal conditioning circuit, for receiving n pressure signal after the amplification and by the n after the amplification
Individual pressure signal is converted to the analog to digital conversion circuit of n pressure value；
It is connected with analog-digital conversion circuit as described, for receiving the n pressure value and by the n pressure every Preset Time
The control circuit of value storage.
3. device according to claim 2, it is characterised in that the CAN port is connected with the control circuit, uses
In the n pressure value for receiving the control circuit output.
4. a kind of bolt strained detecting system, including the detection means as described in claim 1-3 any one, and at data
Reason unit；Wherein,
Data processing unit, is connected with the CAN port in every group of data acquisition unit of the detection means, is used for
Sampling pulse is sent to every group of data acquisition unit every the time of specifying and/or receives the CAN port output
The n pressure value.
5. system according to claim 4, it is characterised in that the data processing unit, including：
The real time clock unit of clock signal is provided；
It is connected with the real time clock unit, for sending sampling pulse to described according to the clock signal every the specified time
The process circuit of the n pressure value of every group of data acquisition unit and/or the reception CAN port output.
6. system according to claim 5, it is characterised in that the process circuit includes micro-control unit and peripheral driver
Circuit.
7. system according to claim 5, it is characterised in that also include：
It is connected with the process circuit, for judging have a pressure value not exist in the n pressure value when the process circuit
After in the pressure limit of regulation during output high level, the warning circuit of warning sound is sent.
8. system according to claim 4, it is characterised in that when the system includes signal conditioning circuit, the letter
Number modulate circuit includes six road full bridge signal modulate circuits.
9. system according to claim 5, it is characterised in that also include：
It is connected, is used for the interface of data transfer with the process circuit.
10. system according to claim 9, it is characterised in that the interface includes that 485 interfaces, CAN interface and network connect
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620908968.9U CN206019897U (en) | 2016-08-19 | 2016-08-19 | A kind of bolt strained detection device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620908968.9U CN206019897U (en) | 2016-08-19 | 2016-08-19 | A kind of bolt strained detection device and system |
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| Publication Number | Publication Date |
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| CN206019897U true CN206019897U (en) | 2017-03-15 |
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| CN201620908968.9U Active CN206019897U (en) | 2016-08-19 | 2016-08-19 | A kind of bolt strained detection device and system |
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|---|---|
| CN (1) | CN206019897U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738104A (en) * | 2019-03-12 | 2019-05-10 | 上海安乃基能源科技有限公司 | Water-turbine top cover bolt monitoring device and method |
| CN111307350A (en) * | 2020-03-19 | 2020-06-19 | 上海电气电站设备有限公司 | Fastener stress state evaluation method and detection device |
-
2016
- 2016-08-19 CN CN201620908968.9U patent/CN206019897U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738104A (en) * | 2019-03-12 | 2019-05-10 | 上海安乃基能源科技有限公司 | Water-turbine top cover bolt monitoring device and method |
| CN111307350A (en) * | 2020-03-19 | 2020-06-19 | 上海电气电站设备有限公司 | Fastener stress state evaluation method and detection device |
| CN111307350B (en) * | 2020-03-19 | 2022-01-11 | 上海电气电站设备有限公司 | Fastener stress state evaluation method and detection device |
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