CN207882729U - Data collecting instrument and data collecting system - Google Patents
Data collecting instrument and data collecting system Download PDFInfo
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- CN207882729U CN207882729U CN201820376682.XU CN201820376682U CN207882729U CN 207882729 U CN207882729 U CN 207882729U CN 201820376682 U CN201820376682 U CN 201820376682U CN 207882729 U CN207882729 U CN 207882729U
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Abstract
The utility model discloses data collecting instrument and data collecting systems, are related to data acquisition equipment field.The utility model provides a kind of data collecting instrument, including body structure and the functional unit that is set in body structure.Functional unit includes AC to DC converter circuit, DC-DC circuit, storage circuit, central processing circuit, watchdog circuit, indicator light circuit, wireless communication module circuit and acquisition telecommunication circuit.Body structure includes babinet coaming plate, mounting plate and shutter, shutter is detachably connected with babinet coaming plate and surrounds installation space with babinet coaming plate, mounting plate is located in installation space and detachably connected with babinet coaming plate, functional unit is mounted on mounting plate, and babinet coaming plate is provided with the fixed part for wall built-up.Data collecting instrument disclosed by the utility model and data collecting system can improve the stability of system, and the online rate of lifting means also has assembly simple, the high feature of structural reliability.
Description
Technical field
The utility model is related to data acquisition equipment fields, in particular to data collecting instrument and data collecting system.
Background technology
Along with the high speed development of photovoltaic power station, and and internet combination, facilitate photovoltaic Internet of Things
Neomorph.However the hardware system in the neomorph is key link, data stablize transmission and reliable acquisition all by hardware
System restricts.The online rate of photovoltaic monitoring device is always the focus of user, therefore the online rate of lifting means first has to
The performance for promoting hardware system, restricts the development of hardware system performance, is mainly manifested in following aspect：(1) stability of program,
The system of determining can or can not crash, and run and fly；(2) continuity of data determines the integrality of monitoring system data；(3) environment
Adaptability, determine data stablize transmission and acquisition；(4) maintainability of product determines after sale and O＆M cost.With point
Cloth photovoltaic plant reaches its maturity, and consumer is higher and higher to the online rate requirement of equipment, and the above problem can highlight very bright
It is aobvious, O＆M cost has been aggravated significantly, while will also result in the ill effect of brand.Therefore it is needed not in the performance of hardware system
Disconnected upgrading, carrys out the further online rate of lifting means.
Utility model content
The purpose of this utility model is to provide a kind of data collecting instruments, on the one hand can improve the stability of system, carry
Rise the online rate of equipment；On the other hand continuous data information can be provided for monitoring cloud platform, and can effectively alleviates fortune
Tie up pressure.Meanwhile also there is assembly simply, the high feature of structural reliability.
The another object of the utility model is to provide a kind of data collecting system, on the one hand can improve the stabilization of system
Property, the online rate of lifting means；On the other hand continuous data information can be provided for monitoring cloud platform, and can effectively delayed
Solve O＆M pressure.Meanwhile also there is assembly simply, the high feature of structural reliability.
The utility model provides a kind of technical solution：
A kind of data collecting instrument, including body structure and the functional unit that is set in body structure.Functional unit includes
AC to DC converter circuit, DC-DC circuit, storage circuit, central processing circuit, watchdog circuit, indicator light circuit, nothing
Line communication module circuitry and acquisition telecommunication circuit.AC to DC converter circuit, storage circuit, watchdog circuit, indicator light circuit, nothing
Line communication module circuitry and acquisition telecommunication circuit are electrically connected with central processing circuit.DC-DC circuit and wireless communication
Modular circuit is electrically connected, to power to wireless communication module circuit.AC to DC converter circuit is used to alternating current being converted to the
One direct current and by the first DC power transmission to central processing circuit, DC-DC circuit is used to direct current being converted to second
Direct current and by the second DC power transmission to central processing circuit.Body structure includes babinet coaming plate, mounting plate and shutter, is hidden
Baffle is detachably connected with babinet coaming plate and surrounds installation space with babinet coaming plate, and mounting plate is located in installation space and and case
Body coaming plate is detachably connected, and functional unit is mounted on mounting plate, and babinet coaming plate is provided with the fixed part for wall built-up.
Further, above-mentioned indicator light circuit includes the current-limiting resistance and light emitting diode being electrically connected with each other, current limliting electricity
Resistance is electrically connected with central processing circuit.
Further, above-mentioned babinet coaming plate includes bottom plate and lateral plate component, and mounting plate is detachably connected with bottom plate, blocks
Plate is detachably connected with lateral plate component, and fixed part is set on lateral plate component.
Further, above-mentioned bottom plate is being positioned apart from multiple threaded posts in installation space, and mounting plate passes through spiral shell
Bolt is connect with threaded post.
Further, above-mentioned lateral plate component includes fixed side panel and the mobile side board that can be relatively rotated with fixed side panel,
Shutter is clamped with fixed side panel, and one end and the fixed side panel of mobile side board are rotatablely connected, the other end of mobile side board and fixation
Side plate is detachably connected, in fixed part setting and fixed side panel.
Further, above-mentioned mobile side board is rotatablely connected by shaft and fixed side panel, and the other end of mobile side board passes through
Bolt is detachably connected with fixed side panel.
Further, above-mentioned mobile side board is provided with through-hole, and threaded hole is provided on fixed side panel, and connection bolt passes through logical
Kong Bingyu threaded holes coordinate.
Further, card slot is provided on two opposite madial walls of above-mentioned fixed side panel, shutter is clamped with card slot.
Further, the quantity of fixation portions is two, and to be respectively arranged at fixed side panel corresponding for two fixed parts
Two lateral walls on, and at least one fixed hole is offered on fixed part.
A kind of data collecting system, including data collecting instrument.Data collecting instrument includes body structure and is set to babinet knot
Functional unit in structure.Functional unit includes AC to DC converter circuit, DC-DC circuit, storage circuit, central processing electricity
Road, watchdog circuit, indicator light circuit, wireless communication module circuit and acquisition telecommunication circuit.AC to DC converter circuit, storage electricity
Road, watchdog circuit, indicator light circuit, wireless communication module circuit and acquisition telecommunication circuit electrically connect with central processing circuit
It connects.DC-DC circuit is electrically connected with wireless communication module circuit, to power to wireless communication module circuit.Exchange turns straight
Current circuit is used to alternating current is converted to the first direct current and by the first DC power transmission to central processing circuit, DC to DC
Circuit is used to direct current is converted to the second direct current and by the second DC power transmission to central processing circuit.Body structure includes
Babinet coaming plate, mounting plate and shutter, shutter is detachably connected with babinet coaming plate and surrounds installation space with babinet coaming plate,
Mounting plate is located in installation space and detachably connected with babinet coaming plate, and functional unit is mounted on mounting plate, and babinet encloses
Plate is provided with the fixed part for wall built-up.
Compared with prior art, the advantageous effect of data collecting instrument provided by the utility model and data collecting system is：
The effect of DC-DC circuit be to wireless communication module power supply, the effect of AC to DC converter circuit be entire
Functional unit is powered.The effect of watchdog circuit is monitored to running program in central processing circuit, to ensure that program is transported
Capable stability.The effect of storage circuit is the information such as storage data, failure and daily record, and wireless communication module circuit is for exchanging
Data realize the wireless communication of data.Acquiring the effect of telecommunication circuit is and inverter interaction data.Central processing circuit can
By CPU by different communication interface Control peripheral circuits, the stable operation of program is realized.The effect of indicator light circuit is pair
The operating status of program is indicated, in order to which user passes through the operating status of indicator light circuit understanding program.Meanwhile pass through by
Functional unit is installed on mounting plate, then mounting plate is installed on babinet coaming plate, by shutter to being installed on mounting plate
Functional unit carries out masking protection, and assembly is incessantly simple, easy to use, while the fixed part being arranged on babinet coaming plate can be convenient for
By equipment in wall built-up.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described.It should be appreciated that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as.For those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the data collecting instrument that the embodiments of the present invention provide；
Fig. 2 is the structural schematic block diagram for the functional unit that the embodiments of the present invention provide；
Fig. 3 is the pin schematic diagram of chip used by the central processing circuit that the embodiments of the present invention provide；
Fig. 4 is the structural schematic diagram for the babinet coaming plate that the embodiments of the present invention provide；
Fig. 5 is the structural schematic diagram for the mobile side board that the embodiments of the present invention provide.
Icon：10- data collecting instruments；100- functional units；110- AC to DC converter circuit；120- DC to DC electricity
Road；130- storage circuits；140- central processing circuits；150- watchdog circuits；160- indicator light circuits；170- radio communication molds
Block circuit；180- acquires telecommunication circuit；200- body structures；210- babinet coaming plates；211- bottom plates；2111- threaded posts；The sides 212-
Board group part；213- fixed side panels；2132- fixed parts；2133- fixed holes；214- mobile side boards；2141- threaded holes；2142-
Card slot；220- mounting plates；230- shutters.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be understood that term "upper", "lower", "inner", "outside", "left", "right" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship that the orientation or positional relationship or those skilled in the art usually put usually understand, be only for
Described convenient for description the utility model and simplifying, do not indicate or imply the indicated equipment or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, " setting ",
Terms such as " connections " shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or one
Ground connects；It can be mechanical connection, can also be electrical connection；Can be directly connected to, can also by between intermediary in succession
It connects, can be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be
The concrete meaning of above-mentioned term in the present invention.
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail.First embodiment
It please refers to Fig.1 to Fig. 2, present embodiments provides a kind of data collecting instrument 10, on the one hand can improve the steady of system
It is qualitative, the online rate of lifting means；On the other hand continuous data information can be provided for monitoring cloud platform, and can be effectively
Alleviate O＆M pressure.Meanwhile data collecting instrument 10 provided in this embodiment also has assembly simple, the high spy of structural reliability
Point.
A kind of data collecting instrument 10 provided in this embodiment, including body structure 200 and be set in body structure 200
Functional unit 100.Functional unit 100 include AC to DC converter circuit 110, DC-DC circuit 120, storage circuit 130, in
Entreat processing circuit 140, watchdog circuit 150, indicator light circuit 160, wireless communication module circuit 170 and acquisition telecommunication circuit
180.AC to DC converter circuit 110, storage circuit 130, watchdog circuit 150, indicator light circuit 160, wireless communication module electricity
Road 170 and acquisition telecommunication circuit 180 are electrically connected with central processing circuit 140.DC-DC circuit 120 and wireless communication
Modular circuit 170 is electrically connected, to power to wireless communication module circuit 170.AC to DC converter circuit 110 is used for alternating current
It is converted to the first direct current and by the first DC power transmission to central processing circuit 140, DC-DC circuit 120 is used for will be straight
Galvanic electricity is converted to the second direct current and by the second DC power transmission to central processing circuit 140.Body structure 200 is enclosed including babinet
Plate 210, mounting plate 220 and shutter 230, shutter 230 and babinet coaming plate 210 it is detachably connected and with babinet coaming plate 210
Surround installation space, mounting plate 220 is located in installation space and detachably connected with babinet coaming plate 210, and functional unit 100 is equal
It is installed on mounting plate 220, babinet coaming plate 210 is provided with the fixed part 2132 for wall built-up.
It should be noted that data collecting instrument 10 provided in this embodiment is in funtion part (i.e. functional unit 100) and knot
Structure part (body structure 200) has carried out good improvement.The effect of DC-DC circuit 120 is to wireless communication module
Power supply, the effect of AC to DC converter circuit 110 are powered for entire functional unit 100.The effect of watchdog circuit 150 is centering
Operation program is monitored in the processing circuit 140 of centre, to ensure the stability of program operation.The effect of storage circuit 130 is to deposit
The information such as data, failure and daily record are stored up, wireless communication module circuit 170 realizes the wireless communication of data for exchanging data.It adopts
Collecting the effect of telecommunication circuit 180 is and inverter interaction data.Central processing circuit 140 can be led to by CPU by different
Believe Interface Controller peripheral circuit, realizes the stable operation of program.The effect of indicator light circuit 160 be to the operating status of program into
Row instruction, in order to which user passes through the operating status of the understanding program of indicator light circuit 160.Meanwhile by the way that functional unit 100 is pacified
It is installed on babinet coaming plate 210 loaded on mounting plate 220, then by mounting plate 220, by shutter 230 to being installed on mounting plate 220
On functional unit 100 carry out masking protection, assemble fixation incessantly simple, easy to use, while being arranged on babinet coaming plate 210
Portion 2132 can be convenient for equipment in wall built-up.
It will also be appreciated that being using the advantages of above-mentioned functional circuit：(1) hardware system circuit design includes software and hardware
The stability of program is paid close attention in watchdog circuit 150, dual fail-safe, evades crash, runs phenomena such as flying；(2) hardware system circuit design
Including local FLASH storages, store real time data in time, breakpoint transmission promotes the integrality of monitoring system data；(3) hardware
System circuit design includes full technical grade Chip scale, and high-gain double shield sucker antenna promotes the change for adapting to high and low temperature environment
Change the receiving and transmitting signal ability that weak environment is covered with base station signal.(4) hardware system circuit design supports this earth fault to export, remotely
Upgrading, standardized designs are replaced and are easy, easy for installation.Maintenance cost can effectively be reduced.
Optionally, in the present embodiment, the chip that central processing circuit 140 is selected is STM32F070C6 chips, pin
Explanation it is as shown in Figure 3.
Optionally, AC to DC converter circuit 110 may include switching power source chip, thermistor, ceramic condenser, transformation
Device, diode, isolation optocoupler, divider resistance and filter capacitor；DC-DC circuit 120 includes DC to DC chip, steady
Voltage capacitance, divider resistance, I-shaped inductance and filter capacitor；Storage circuit 130 is by storage chip, pull-up resistor and filtered electrical
Hold；Central processing circuit 140 includes main control chip, pull-up resistor, filter capacitor and download interface；Watchdog circuit 150 includes
Watchdog chip, pull-up resistor, filter capacitor and divider resistance；Wireless communication module circuit 170 includes chip card, wireless communication
Module, triode, antenna, electric capacity of voltage regulation and current-limiting resistance；It includes communication chip, protection chip, current limliting to acquire telecommunication circuit 180
Resistance, filter capacitor, triode and terminal coupling switch；Indicator light circuit 160 include the current-limiting resistance that is electrically connected with each other and
Light emitting diode, current-limiting resistance are electrically connected with central processing circuit 140.
Please continue to refer to Fig. 2, in the present embodiment, babinet coaming plate 210 includes bottom plate 211 and lateral plate component 212, mounting plate
220 is detachably connected with bottom plate 211, and shutter 230 and lateral plate component 212 are detachably connected, and fixed part 2132 is set to
On lateral plate component 212.
Fig. 4 and Fig. 5 are please referred to, in the present embodiment, bottom plate 211 is being positioned apart from multiple spiral shells in installation space
Line column 2111, mounting plate 220 are connect by bolt with threaded post 2111.
In the present embodiment, lateral plate component 212 includes fixed side panel 213 and can be relatively rotated with fixed side panel 213
Mobile side board 214, shutter 230 are clamped with fixed side panel 213, and one end and the rotation of fixed side panel 213 of mobile side board 214 connect
It connects, the other end and fixed side panel 213 of mobile side board 214 are detachably connected, the setting of fixed part 2132 and fixed side panel 213
On.
In the present embodiment, mobile side board 214 is rotatablely connected by shaft and fixed side panel 213, mobile side board 214 it is another
One end is detachably connected by bolt and fixed side panel 213.
In the present embodiment, mobile side board 214 is provided with through-hole, and threaded hole 2141 is provided on fixed side panel 213, connection
Bolt passes through through-hole and coordinates with threaded hole 2141.
In the present embodiment, be provided with card slot 2142 on two opposite madial walls of fixed side panel 213, shutter 230 with
Card slot 2142 is clamped.
In the present embodiment, the quantity of fixed part 2132 is two, and two fixed parts 2132 are respectively arranged at affixed side
On 213 corresponding two lateral walls of plate, and at least one fixed hole 2133 is offered on fixed part 2132.
The advantageous effect of data collecting instrument 10 provided in this embodiment：The effect of DC-DC circuit 120 is to wireless
Communication module is powered, and the effect of AC to DC converter circuit 110 is powered for entire functional unit 100.The work of watchdog circuit 150
With being monitored to running program in central processing circuit 140, to ensure the stability of program operation.Storage circuit 130
Effect is the information such as storage data, failure and daily record, and wireless communication module circuit 170 realizes the nothing of data for exchanging data
Line communicates.Acquiring the effect of telecommunication circuit 180 is and inverter interaction data.Central processing circuit 140 can be passed through by CPU
Different communication interface Control peripheral circuits, realizes the stable operation of program.The effect of indicator light circuit 160 is the fortune to program
Row state is indicated, in order to which user passes through the operating status of the understanding program of indicator light circuit 160.Meanwhile by by function
Component 100 is installed on mounting plate 220, then mounting plate 220 is installed on babinet coaming plate 210, by shutter 230 to being installed on
Functional unit 100 on mounting plate 220 carries out masking protection, and assembly is incessantly simple, easy to use, while on babinet coaming plate 210
The fixed part 2132 of setting can be convenient for equipment in wall built-up.
Second embodiment
Fig. 1 to Fig. 5 is please referred to, present embodiments provides a kind of data collecting system, including background terminal and therewith
The data collecting instrument 10 that the first embodiment of communication connection provides.Data collecting instrument 10 includes body structure 200 and is set to case
Functional unit 100 in body structure 200.Functional unit 100 include AC to DC converter circuit 110, DC-DC circuit 120,
Storage circuit 130, central processing circuit 140, watchdog circuit 150, indicator light circuit 160, wireless communication module circuit 170 and
Acquire telecommunication circuit 180.AC to DC converter circuit 110, storage circuit 130, watchdog circuit 150, indicator light circuit 160, nothing
Line communication module circuitry 170 and acquisition telecommunication circuit 180 are electrically connected with central processing circuit 140.DC-DC circuit
120 are electrically connected with wireless communication module circuit 170, to power to wireless communication module circuit 170.AC to DC converter circuit
110 by alternating current for being converted to the first direct current and by the first DC power transmission to central processing circuit 140, DC to DC
Circuit 120 is used to direct current is converted to the second direct current and by the second DC power transmission to central processing circuit 140.Babinet knot
Structure 200 includes babinet coaming plate 210, mounting plate 220 and shutter 230, and shutter 230 and babinet coaming plate 210 are detachably connected
And installation space is surrounded with babinet coaming plate 210, mounting plate 220 is located in installation space and removably connects with babinet coaming plate 210
It connects, functional unit 100 is mounted on mounting plate 220, and babinet coaming plate 210 is provided with the fixed part 2132 for wall built-up.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of data collecting instrument, which is characterized in that including body structure and the functional unit being set in the body structure；
The functional unit includes AC to DC converter circuit, DC-DC circuit, storage circuit, central processing circuit, guards the gate
Dog circuit, indicator light circuit, wireless communication module circuit and acquisition telecommunication circuit；
The AC to DC converter circuit, the storage circuit, the watchdog circuit, the indicator light circuit, the channel radio
Believe that modular circuit and acquisition telecommunication circuit are electrically connected with the central processing circuit；
The DC-DC circuit is electrically connected with the wireless communication module circuit, with to the wireless communication module circuit
Power supply；
The AC to DC converter circuit is used to alternating current is converted to the first direct current and by first DC power transmission to institute
State central processing circuit, the DC-DC circuit is used to direct current is converted to the second direct current and by second direct current
The central processing circuit is transported in fax；
The body structure includes babinet coaming plate, mounting plate and shutter, and the shutter and the babinet coaming plate are removably
Connect and surround installation space with the babinet coaming plate, the mounting plate be located at the installation space it is interior and with the babinet coaming plate
Detachably connected, the functional unit is mounted on the mounting plate, and the babinet coaming plate is provided with consolidating for wall built-up
Determine portion.
2. data collecting instrument according to claim 1, which is characterized in that the indicator light circuit includes being electrically connected with each other
Current-limiting resistance and light emitting diode, the current-limiting resistance and the central processing circuit are electrically connected.
3. data collecting instrument according to claim 1, which is characterized in that the babinet coaming plate includes bottom plate and side plate group
Part, the mounting plate and the bottom plate are detachably connected, and the shutter and the lateral plate component are detachably connected, described
Fixed part is set on the lateral plate component.
4. data collecting instrument according to claim 3, which is characterized in that the bottom plate is between in the installation space
Ground is provided with multiple threaded posts, the mounting plate is connect by bolt with the threaded post.
5. data collecting instrument according to claim 3, which is characterized in that the lateral plate component includes fixed side panel and can
The mobile side board relatively rotated with the fixed side panel, the shutter are clamped with the fixed side panel, the mobile side board
One end is rotatablely connected with the fixed side panel, and the other end of the mobile side board and the fixed side panel are detachably connected, institute
It states on fixed part setting and the fixed side panel.
6. data collecting instrument according to claim 5, which is characterized in that the mobile side board passes through shaft and the fixation
Side plate is rotatablely connected, and the other end of the mobile side board is detachably connected by bolt and the fixed side panel.
7. data collecting instrument according to claim 6, which is characterized in that the mobile side board is provided with through-hole, described solid
Determine to be provided with threaded hole on side plate, connection bolt passes through the through-hole and with the threaded hole coordinates.
8. data collecting instrument according to claim 5, which is characterized in that on two opposite madial walls of the fixed side panel
It is provided with card slot, the shutter is clamped with the card slot.
9. data collecting instrument according to claim 5, which is characterized in that the quantity of the fixed part is two, and two
The fixed part is respectively arranged on corresponding two lateral walls of the fixed side panel, and is offered at least on the fixed part
One fixed hole.
10. a kind of data collecting system, which is characterized in that include the data acquisition as described in any one of claim 1-9
Instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376682.XU CN207882729U (en) | 2018-03-19 | 2018-03-19 | Data collecting instrument and data collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376682.XU CN207882729U (en) | 2018-03-19 | 2018-03-19 | Data collecting instrument and data collecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207882729U true CN207882729U (en) | 2018-09-18 |
Family
ID=63497166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820376682.XU Active CN207882729U (en) | 2018-03-19 | 2018-03-19 | Data collecting instrument and data collecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207882729U (en) |
-
2018
- 2018-03-19 CN CN201820376682.XU patent/CN207882729U/en active Active
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