CN105758455B - The combined data collection sensor of networking - Google Patents
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- CN105758455B CN105758455B CN201610118080.XA CN201610118080A CN105758455B CN 105758455 B CN105758455 B CN 105758455B CN 201610118080 A CN201610118080 A CN 201610118080A CN 105758455 B CN105758455 B CN 105758455B
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Abstract
A kind of combined data the invention discloses networking gathers sensor, including housing, ethernet circuit unit, data acquisition process chip and built-in sensors are equipped with the housing, the built-in sensors include vibrating sensor and temperature sensor, the vibrating sensor carries magnetic absorbing seat accessory, and the temperature sensor is coated with heat-conducting silicone grease；The ethernet circuit unit includes Ethernet communication circuit unit and Power over Ethernet circuit unit, one input terminal of the data acquisition process chip is connected by analog signal conditioner circuit unit with vibrating sensor, another input terminal is connected by SPI communication links with temperature sensor, the output terminal of the data acquisition process chip is connected with Ethernet communication circuit unit, and the Power over Ethernet circuit unit is powered for data acquisition process chip and built-in sensors.The present invention realizes the integrated of data acquisition, miniaturization and networking, greatly simplifies product structure, reduces product cost.
Description
Technical field
The present invention relates to the combined data collection sensor of a kind of data acquisition device, more particularly to a kind of networking.
Background technology
Vibration and temperature monitoring system currently on the market is the framework of multiple product component combinations, i.e. vibration, temperature
Sensor and data acquisition device are three or two single products, by being used after signal cable connection combination, substantially may be used
To be summarized as distributed and centralized two kinds of topological structures, wherein distribution topology framework as shown in Figure 1, centralized topological structure
As shown in Figure 2.Long-term existence before both topological structures, is to comply with the professional technique professional domain rule of development, different
What industrial automation technology developing period occurred, each there is certain applicability, disclosure satisfy that wanting for a part of field application
Ask.But as industrial production regulatory requirement is in the change and the influence of more and more fierce market competition maked rapid progress, semiconductor
Technology and automatic technology develop into increasingly be intended to adapt to big data monitoring analysis demand when, this traditional system architecture
What form increasingly constrained industrial circle application self expands so that vibration, the input of temperature monitoring device cannot reach good
Good input-output ratio, can not support vibration, the standardization replication application of temperature monitoring system of various application occasions, both
The shortcomings that system topological framework is also more and more obvious, concentrate on it is following some：
What the 1st, the analog signal link of long range cannot be reliably and with long-term run on, and the more and more intensive industry of various interference shows
, more and more various systems produce for signal cable reliability in itself and the factor of external world and field deployment
Electromagnetic Interference factor so that either in order to ensure signal quality as target in deployment or follow-up maintenance is implemented first
Working day increasingly weighs, and not only adds the financial burden of user, and adds the workload of user, from this view point,
The terminal of valid data, which cannot be continued reliably to obtain, can not support big data analysis prolonged application.
2nd, data acquisition device and sensor performance mismatch, can not cooperate satisfaction to set in system level well
The requirement of standby monitoring.This is because both develop in respective field, in face of different application demands, it is unbalanced to form technology
State.Such as：For the index of signal response, for the index of monitoring accuracy, particularly larger industry spot, warp are being disturbed
Often there is mismatch, difference not exclusively numerically, even can all there is difference in the definition of physical concept so that whole system
System does not have the effect of monitoring device.
3rd, the data throughput capabilities of data acquisition device, even if employing Ethernet sum number in the system of centralized architecture
Connected according to server, the continuous push ability of improvement source data that also can not be substantive so that big data system can obtain
Data supporting validity it is more and more lower.
4th, the channel utilization index of data acquisition device is not high, causes customer investment to exceed demand.Traditional data acquisition
Device is often designed as a fixed sensor access quantity, is typically 4 or 8 or 16.In real field deployment, often
Can be a little more than the accessible sensor number of data acquisition device due to the points for needing to monitor, and must be adopted by increasing data
The quantity of acquisition means solves, even if one monitoring point of increase is also required to one data acquisition device of increase.Same situation exists
It can occur when new upper system and original system dilatation, user just needs increase additional investment or overlapping investment, such case to make
Obtaining systems provider and user can not be double in the case where equipment management requires the increasingly fierce market environment of higher and higher and product competition
Win.
In order to enable equipment monitoring apparatus is really connected with big data analysis software systems, become reliable continuous
Monitoring data source, so as to effectively show the effect of big data analysis, allows the monitoring data of automation equipment to be serviced for production.Cause
This, it is necessary to integrated, miniaturization is carried out to available data harvester and networking improves, is not only overcome in legacy system
The weak shortcoming low with the handling capacity of Data Collection transmission of the long antijamming capability of analog signal link, and reduce tradition
The deployment and the complexity of maintenance that multiple product components are brought in system, had not only reduced the cost of commercialization, but also fast easy to user
Speed realizes application deployment and follow-up system maintenance.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of combined data collection sensor of networking, Neng Goushi
The integrated of existing data acquisition device, miniaturization and networking, greatly simplify product structure, reduce product cost, and effectively solve
The certainly weak shortcoming low with Data Collection transmission handling capacity of the long antijamming capability of analog signal link in legacy system.
The present invention is to provide a kind of combined data of networking to solve the technical solution that above-mentioned technical problem uses
Sensor, including housing are gathered, ethernet circuit unit, data acquisition process chip and built-in sensing are equipped with the housing
Device, wherein, the built-in sensors include vibrating sensor and temperature sensor, and the vibrating sensor is matched somebody with somebody with magnetic absorbing seat
Part, the temperature sensor are coated with heat-conducting silicone grease；The ethernet circuit unit include Ethernet communication circuit unit and
Power over Ethernet circuit unit, an input terminal of the data acquisition process chip by analog signal conditioner circuit unit and
Vibrating sensor is connected, and another input terminal is connected by SPI communication links with temperature sensor, the data acquisition process chip
Output terminal be connected with Ethernet communication circuit unit, the Power over Ethernet circuit unit respectively with data acquisition process chip
It is connected with the power end of built-in sensors.
The combined data collection sensor of above-mentioned networking, wherein, the bearing block on the housing is magnetic absorption
Base, the temperature sensor are digitlization platinum thermal resistance sensor.
Above-mentioned networking combined data collection sensor, wherein, the Power over Ethernet circuit unit include every
From transformer, the side secondary input end of the isolating transformer is connected with bridge rectifier, inputs 36V~57V DC voltages,
The two sides time output terminal of the isolating transformer is connected with capacitor filtering regulator circuit, exports 5V DC voltages.
The combined data collection sensor of above-mentioned networking, wherein, the Ethernet communication circuit unit includes thing
Layer transceiving chip is managed, the input terminal of the physical layer transceiver chip is connected with impedance matching circuit and network transformer, the thing
The output terminal of reason layer transceiving chip is connected with data acquisition process chip.
The combined data collection sensor of above-mentioned networking, wherein, the analog signal conditioner circuit unit includes
Modulus conversion chip, the input terminal of the modulus conversion chip pass through filter circuit, amplifying circuit, block isolating circuit and vibrating sensing
Device is connected, and the output terminal of the modulus conversion chip is connected by SPI communication links with data acquisition process chip.
The present invention contrast prior art has following beneficial effect：The combined data collection of networking provided by the invention
Sensor, can realize the integrated of data acquisition device, miniaturization and networking, greatly simplify product structure, reduce product
Cost, and it is weak low with Data Collection transmission handling capacity effectively to solve the long antijamming capability of analog signal link in legacy system
Shortcoming.
Brief description of the drawings
Fig. 1 is existing distributed data acquisition system schematic diagram；
Fig. 2 is existing centralized data acquisition device system schematic；
Fig. 3 is the system architecture schematic diagram of network integration data acquisition device using the present invention；
Fig. 4 is that the combined data of inventive network gathers sensor circuit block diagram；
Fig. 5 is the circuitry block schematic diagram of the Power over Ethernet circuit unit of the data acquisition device of the present invention；
Fig. 6 is the circuitry block schematic diagram of the data communication circuit unit of the data acquisition device of the present invention；
Fig. 7 is the circuitry block schematic diagram of the analog signal conditioner circuit unit of the data acquisition device of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
The present invention is to carry out highly integrated by sensor and data acquisition device and minimize, a kind of electronics of networking dress
Put, be mainly used for vibration and the temperature monitoring of rotating machinery, be also applied for some static vibrations monitoring application (such as：
Bridge, steel construction).Apparatus of the present invention are integrated with 1 vibrating sensor and 1 temperature sensor, form 7 kinds it is different configuration of
Product, can need to form three kinds of monitoring schemes according to actual monitoring：Vibration+temperature combined monitoring, single vibration monitoring or
Single temperature monitoring.The system architecture of network integration data acquisition device using the present invention is as shown in Figure 3.
Fig. 4 is referred to, the combined data collection sensor of networking provided by the invention mainly includes such as lower part：1)
Power over Ethernet and data communication circuit unit；2) miniaturized sensors part (including vibration, temperature)；3) analog signal conditioner
Circuit unit and data acquisition process chip.The major function of each circuit unit and realization are as follows：
1) Power over Ethernet and data communication part
Power over Ethernet circuit unit (Power Over Ethernet) employ meet IEEE802.3AF and
The circuit design of IEEE802.3AT standards, compatibility have been adapted in the net using different Ethernet wire rods (4 core cables, 8 core cables)
Applied in network environment.
By the 48V bias voltage (accommodations on Ethernet：36V~57V) by bridge rectifier, transformer isolation
The processing of the circuits such as conversion circuit, capacitor filtering voltage stabilizing, is changed into 5V direct voltage outputs, and maximum output is power 9W, is belonged to
0 grade power consumption (0.44W~12.95W) device in two standards is stated, as shown in Figure 5.
Ethernet communication circuit unit employs the Ethernet communication circuit design for meeting 802.3 standards, data communication association
View is as shown in Figure 6 using the TCP/IP communications protocol for meeting 802.3 standards, circuit block diagram.The circuit design causes sensor one
It is adaptive that the Ethernet data transmission rate of body data acquisition device can reach 10/100M, fully meet vibration data and
The continuous upload of temperature data.
2) miniaturized sensors part (including vibration, temperature)
The sensor of miniaturization enables the volume of integral product to be compressed to minimum, and can have enough designs
The multiple functional circuits of space.The miniaturized sensors include vibrating sensing part and temperature sensing portion.
Vibrating sensor employs piezoelectric ceramics effect technology, and the piezoceramics crystal formed with tri-shear is built into
There is the piezoelectric element of certain frequency response duration to vibration force in the X, Y, Z direction for one, when vibrated, be added in piezoelectricity member
Power on part changes therewith, then the circuit such as coordinates and amplify with electric charge, filters, and the ultra-weak electronic signal of piezoelectric element is converted into band
There is the voltage signal output necessarily biased, so as to be identified by the analog signal conditioner circuit of rear end.The vibrating sensing portion of the present invention
Part belongs to low-voltage ICP (integrated circuit piezoelectric Integrated Circuit Piezoelectric) acceleration sensing element,
According to the different frequency response range demand of field monitoring, different sensing elements is equipped with, 3 kinds of products can be formed.
Conventional vibration sensing element：Sensitivity is 100mV/G (10mV/m/s2), response range 1Hz-10KHz, amplitude
Response range is +/- 40G (+/- 400m/s2), it disclosure satisfy that the vibration monitoring of most of rotating machinery of industrial circle will
Ask.
Low-frequency vibration sensing element：Sensitivity is 500mV/G (50mV/m/s2), response range 0.3Hz-3KHz, amplitude
Response range is +/- 10G (+/- 100m/s2), it disclosure satisfy that the vibration monitoring of the Low-speed rotating machinery equipment of industrial circle will
Ask.
Static vibration sensing element：Sensitivity is 40mV/G (4mV/m/s2), response range is 0Hz~1KHz, and amplitude is rung
It is +/- 20G (+/- 200m/s to answer scope2), it disclosure satisfy that the static device of industrial circle and the static structure of building field
Vibration monitoring requirement.
The transmission of vibration force is realized by the rigidity of the exterior mechanical part of the present apparatus.Structure inside equipment is shaken
It is dynamic to pass through bearing --- the rigid attachment of bearing block is delivered to device housings surface, only need to install this dress at corresponding position
Put, pass through the base with connection bolt, you can vibration force is delivered on vibrating sensing component.This base has two kinds of installations
Form, one kind are by being welded to equipment surface, and another kind is to pass through magnetic absorption.Usually in the premise effectively monitored
Under, magnetic bases can be selected and implement to dispose to facilitate.Both installation forms all meet ISO vibration-testing standards.
Temperature sensing component employs Miniature digital platinum resistance thermometer sensor, thermometry, realizes high accuracy and the temperature of fast and stable
Degree monitoring.Temperature monitoring scope is -40~85 DEG C, and resolution ratio is less than 0.1 DEG C, and precision is +/- 0.5 DEG C, when signal acquisition refreshes
Between be 85ms.By vibrating the matched combined different with temperature sensing component, monitoring products configuration as shown in Table 1 can be formed,
Fully meet field monitoring demand.
| Sequence number | Monitor products configuration |
| 1 | Conventional vibration monitors |
| 2 | Conventional vibration monitoring+temperature monitoring |
| 3 | Low-frequency vibration monitors |
| 4 | Low-frequency vibration monitoring+temperature monitoring |
| 5 | Static vibration monitors |
| 6 | Static vibration monitoring+temperature monitoring |
| 7 | Temperature monitoring |
Table 1
The transmission of temperature be by have the metal parts of thermal conductive resin realize, and be equipped with heat-conducting silicone grease surround temperature sensing
Component, to improve heat transfer efficiency between metal parts and temperature sensing component.Temperature signal is direct digitization output, therefore is counted
Only need to carry out SPI interface data communication with sensing element according to acquisition process chip can obtain monitoring data.Data acquisition process
Chip often obtains 10 temperature monitoring data and carries out once averagely, to eliminate the unreasonable collection signal of abnormal sudden change to entirety
The influence of monitoring data.Every 10 thermometric sample means as a temperature monitoring data, refresh rate can reach 1 second 1
Data, disclosure satisfy that the temperature monitoring demand of most of industrial circle
3) analog signal conditioner circuit unit and data acquisition process chip
The original signal of vibration and temperature sensing component output is needed by special signal processing, including hardware tune
Required data are applied in the monitoring that can just be supported after reason conversion and software calculating processing.Vibration signal need to pass through blocking electricity
The processing such as road, amplifying circuit, filter circuit, integrating circuit, modulus conversion chip (data acquisition), circuit block diagram are as shown in Figure 7.
The major function of each circuit is as follows：
Block isolating circuit ends direct current signal, allows AC signal to pass through.The detecting means monitored for routine and low-frequency vibration
Part, it exports signal effective ingredient as exchange.Therefore need block isolating circuit to come into force, be designed as 0.15Hz.Monitored in static vibration
In, then block isolating circuit is bypassed by program-controlled so that the direct current signal that sensing element produces can be also collected.
Primary amplifying circuit：It is herein first order amplifying circuit, carries out circuit design with operational amplifier, amplification factor is
2.Carry out a primary amplification for the small-signal of sensing element, so as to follow-up signal condition can be filtered effectively,
Noise reduction, integration.
Vibration acceleration signal acquisition process circuit：Including be sequentially connected the first high-pass filtering circuit, first program-controlled put
Big circuit and the first program-controlled low-pass filter circuit.The original signal of vibrating sensing component output is acceleration force signal, therefore,
The signal that suitable frequency band need to be only screened according to monitoring requirements is acquired.The screening of signal frequency section then passes through high pass
Filtering and low-pass filtering carry out.High-pass filtering is designed as 5Hz, to meet the different work of industry spot major part rotating machinery
Make the acceleration signal monitoring requirements under rotating speed.The optional frequency point ranges of program-controlled low-pass filtering design are 10KHz, 5KHz,
3.2KHz, 2KHz, 1KHz so that acceleration signal is given full play to for the characteristic that high-frequency signal has responded, and can be monitored
Equipment bearing, the early defect signal of gear and equipment loosen the signal of early stage.The design of programmable amplifying circuit to be monitored
Signal is at optimal signal resolution amplitude range when being input to modulus conversion chip, so as to improve signal sampling precision.
The programming amplifying multiple of vibration acceleration signal is 1,2,4,8.
Vibration velocity signal acquisition processing circuit：Including an integrating circuit, the second programmable amplifying circuit being sequentially connected
With the second program-controlled low-pass filter circuit.Vibration velocity signal is obtained by vibration acceleration signal by hardware Integral Transformation.Hardware
Integrating circuit calculates the advantage compared with Software Integration and is that signal is truly stablized, in the frequency response speed and resolution ratio of signal
On can accomplish quick and precisely, and will not because of low frequency signal even direct current signal frequency it is sufficiently low and can not carry out integration turn
Get speed signal in return.This is also this monitoring device using signal quality as the consideration primarily ensured.The high pass of vibration velocity signal
Filter design is 1Hz, to meet that the speed signal under the different working speed of industry spot major part rotating machinery monitors
Demand.The optional frequency point ranges of program-controlled low-pass filtering design be 3.2KHz, 2KHz, 1KHz so that speed signal for low frequency with
The characteristic that intermediate-freuqncy signal has responded is given full play to, can be to occupying the vibration signal of absolute ratio in equipment body vibration earthquake intensity
Make accurate monitoring.This is also the reason for speed signal is classified as evaluation criterion parameter by ISO10816.Vibration velocity signal
Programming amplifying multiple is 1,2,4,8.
Vibration displacement signal acquisition processing circuit：Including quadratic integral circuit, the 3rd programmable amplifying circuit being sequentially connected
With the 3rd program-controlled low-pass filter circuit, the input terminal of the quadratic integral circuit and the output terminal phase of the second high-pass filtering circuit
Even.Vibration displacement signal is obtained by vibration velocity signal by hardware Integral Transformation.The program-controlled low-pass filtering of vibration displacement signal
The optional frequency point ranges of design are 500Hz, 200Hz, 100Hz so that the characteristic quilt that displacement signal has been responded for low frequency signal
Give full play to, can monitor the shafting of equipment and the early defect signal of the vibration of foundation.This is also that ISO10816 believes displacement
The reason for number being classified as evaluation criterion parameter.The programming amplifying multiple of vibration displacement signal is 1,2,5,10.Because displacement signal is big
All it is low frequency signal under partial picture, is the very small signal of amplitude, therefore its programming amplifying needs specific rate signal and adds
Speed signal needs the amplification factor of higher.
Modulus conversion chip：It is responsible for signal acquisition, the data of analog-to-digital conversion are 24 bit binary datas, and voltage signal has
It is 20 that effect, which differentiates digit, about 9.537uV so that the precision of small-signal monitoring is greatly improved.According to vibrating sensing component
Different sensitivity, it can be deduced that acceleration force signal resolution control as shown in Table 2.
| Conventional vibration sensing element | 10mV/m/s2 | 0.0009537m/s2 |
| Low-frequency vibration sensing element | 50mV/m/s2 | 0.00019074m/s2 |
| Static vibration sensing element | 4mV/m/s2 | 0.00238425m/s2 |
Table 2
Vibration signal becomes digital signal by analog-to-digital conversion, then is transferred to processor chips by SPI communication interfaces.Its
The data sampling rate of communication speed and modulus conversion chip is directly proportional, effectively to be monitored for high-frequency signal, sample rate must
It must be higher than at least 2.56 times (the meeting Sampling Theorem) of signal frequency, then the message transmission rate of SPI communication interfaces is also necessary
It is very high, processor chips are given in the data of collection could being given quickly, to ensure that sampling can be carried out effectively next time.
Collection for different vibration signals, not only has sample rate to need to select, it is also necessary to selects collected data to grow
Degree (unitary sampling effectively monitored needs how many data volume).The two sampling parameters directly determine the quality of data, all right
Vision signal than normal quality is compared with high-definition video signal, one be scheduled in the sample rate and data length of data have it is very big
Difference.Quality data sampling can be carried out, just reflects the quality of data acquisition device.Apparatus of the present invention are supported such as the institute of table 3
The sampling parameter shown.
Table 3
Sample rate is to be multiplied by 2.56 according to the setting value of program-controlled low-pass filtering (monitored signal frequency bandwidth) to draw (signal
Sampling must meet Sampling Theorem), therefore unlike signal classification has just corresponded to different sampling parameters, such as：12800 sample rates are
Acceleration signal monitoring is served only for, because its corresponding monitored signal frequency bandwidth is 5KHz.
The present invention is integrated the both mechanically and electrically technology for having intersection, is then added in the two traditional fields not
The technology being employed, so as to produce new integration product form, is aided with data management analysis software, forms new networking
Vibration and temperature monitoring system.The present invention not only meets in the market with the conventional vibration in indication range, temperature monitoring system
The application requirement of system, while such system has been accomplished into integrated, miniaturization and networking, not only overcome mould in legacy system
Intend the weak shortcoming low with the handling capacity of Data Collection transmission of the long antijamming capability of signal link, and reduce traditional system
The deployment and the complexity of maintenance that multiple product components are brought in system, had not only reduced the cost of commercialization, but also quick easy to user
Realize application deployment and follow-up system maintenance.The device of the invention is eliminating or is improving many conventional vibrations, temperature sensing
During device and conventional vibration, temperature data acquisition device product defects, the advantages of itself is peculiar has been gradually formed.It is main excellent
Point is as follows：
1) congenerous product scope inner height is integrated and minimized, and application scenario space constraint is low
Incorporate vibration, temperature sensing component sum number adopts function, thereby increases and it is possible to be that smallest is applied to industrial circle
Vibration temperature combined monitoring system and device, overall volume are about 48 (length) x42 (width) x36 (height) mm, and weight is less than 110 grams.It is small
Volume make it that the volume of product and traditional vibration acceleration sensor is suitable, is fully able to adapt to conventional vibration acceleration sensing
The space constraint of device mounting location.So as on the premise of not changing to original application environment, add several device for picking, apply
The advantage of the low requirement in space is showed fully.
2) with the lower monitoring device utilization rate highest of application deployment, no redundant system investment
The sensor access quantity for having had been previously mentioned traditional number device for picking is often designed as a larger fixed value,
Such as 4,8,16,32 so that the design of field application deployment cannot always reach making the best use of everything just, always have unnecessary number to adopt
Passage is wasted.The vibration monitoring passage and temperature monitoring number of channels of apparatus of the present invention configuration are 1, in conjunction with different sensings
The configuration of component, allows for that field deployment is certain to be matched completely with actual monitoring demand, will not allow the unnecessary investment of user effort.
3) sensing element output analog signal minimum interference, ensures signal monitoring accuracy
Traditional vibration monitor system, is required to transmit the output signal (analog signal) of sensor by signal cable
To several device for picking, and the transmission range of signal cable is even up to 30 meters generally more than 2 meters so that the original of sensor output
Beginning signal is highly susceptible to the various interference effects of site environment, is not only the Electromagnetic Interference that miscellaneous equipment is sent, also has
Disturbed caused by the environmental change residing for signal cable pipeline that overhaul of the equipments etc. is brought, such as：Water, oil, corrosivity
Gas, high temperature, low temperature etc..After apparatus of the present invention integrate sensing element sum number device for picking, this section of analog signal is at producing
Inside product, its length is also just protected at 2 centimetres, and by product casing, can ignore the influence of external disturbance completely.It ensure that
The quality of original signal, also ensures that the accuracy of signal monitoring.
4) field deployment implementation and maintenance work are most easy, only need system integrating, without special deployment request.
Since apparatus of the present invention are same as conventional vibration, temperature sensor is directly mounted to device housings surface, and draw
Signal cable be exactly network cable, the router with POE functions that network cable need to be only linked into by equipment or exchange
The port of machine, therefore the deployment of the system is just as one local area ethernet network of deployment beside equipment.There is no special installation
Implement technical need so that the field deployment of the present apparatus is very simple.It is exactly to be that can uniquely calculate as complicated project content
Long-distance data transmission and need the fiber cable laying carried out, but corresponding engineering technology also becomes the mark electrically installed already
Quasi- technology.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any this area skill
Art personnel, without departing from the spirit and scope of the present invention, when can make a little modification and it is perfect, therefore the present invention protection model
Enclose to work as and be subject to what claims were defined.
Claims (2)
1. a kind of combined data collection sensor of networking, including housing, be equipped with the housing ethernet circuit unit,
Data acquisition process chip and built-in sensors, it is characterised in that the built-in sensors include vibrating sensor and temperature passes
Sensor, the vibrating sensor carry magnetic absorbing seat accessory, and the temperature sensor is coated with heat-conducting silicone grease；The Ethernet electricity
Road unit includes Ethernet communication circuit unit and Power over Ethernet circuit unit, and one of the data acquisition process chip is defeated
Enter end by analog signal conditioner circuit unit with vibrating sensor to be connected, another input terminal passes through SPI communication links and temperature
Sensor is connected, and the output terminal of the data acquisition process chip is connected with Ethernet communication circuit unit, and the Ethernet supplies
Power end of the electric circuit unit respectively with data acquisition process chip and built-in sensors is connected；
The temperature sensor is digitlization platinum thermal resistance sensor；The Power over Ethernet circuit unit includes isolation transformation
Device, the side secondary input end of the isolating transformer are connected with bridge rectifier, input 36V~57V DC voltages, it is described every
Two sides time output terminal from transformer is connected with capacitor filtering regulator circuit, exports 5V DC voltages；
The analog signal conditioner circuit unit includes modulus conversion chip, and the input terminal of the modulus conversion chip passes through filtering
Circuit, amplifying circuit, block isolating circuit are connected with vibrating sensor, and the output terminal of the modulus conversion chip passes through SPI communication links
Road is connected with data acquisition process chip.
2. the combined data collection sensor of networking as claimed in claim 1, it is characterised in that the ethernet communication
Circuit unit includes physical layer transceiver chip, and the input terminal of the physical layer transceiver chip is connected with impedance matching circuit and network
Transformer, the output terminal of the physical layer transceiver chip are connected with data acquisition process chip.
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