CN108806326B - Parking lot data acquisition system based on cloud server - Google Patents
Parking lot data acquisition system based on cloud server Download PDFInfo
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- CN108806326B CN108806326B CN201810925618.7A CN201810925618A CN108806326B CN 108806326 B CN108806326 B CN 108806326B CN 201810925618 A CN201810925618 A CN 201810925618A CN 108806326 B CN108806326 B CN 108806326B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
- G08G1/142—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces external to the vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/148—Management of a network of parking areas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention relates to a parking lot data acquisition system based on a cloud server, which comprises: the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; the parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module; the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module; the cloud server obtains the remaining parking space information of each parking lot according to the information of the vehicles entering and leaving each parking lot, and displays the remaining parking space information of each parking lot through the display module of each parking lot; the parking lot data acquisition system of the invention shares the information of the rest parking spaces of each parking lot in the area range, thereby facilitating the car owner to quickly find the parking lot which can park.
Description
Technical Field
The invention relates to a parking lot data acquisition system based on a cloud server and a working method thereof.
Background
With the rapid increase of the quantity of motor vehicles kept in cities, a lot of cities have the increasingly remarkable problem of 'difficult and hard parking'. The parking difficulty leads to the fact that the vehicle parks in both sides of the road, and further deepens traffic jam, and in order to alleviate the problem of traffic jam caused by indiscriminate parking, the large-scale parking lot is widely applied. However, parking information is only poorly known to the parking person, which results in the fact that the parking spaces of large parking lots in many business circles are not fully utilized. The conventional manner of manually managing parking lots and the grasping of data of existing parking lots have not been able to satisfy the development demands.
Therefore, big data summarization of urban parking lot information is very necessary, and the requirements for data processing and distribution are urgent. If a parking lot system is available, parking space information of surrounding parking lots can be rapidly displayed and updated in real time, so that a large amount of time waste caused by parking can be avoided, and great convenience is provided for travel and life of people.
Disclosure of Invention
The invention aims to provide a parking lot data acquisition system based on a cloud server and a working method thereof.
In order to solve the above technical problem, the present invention provides a parking lot data acquisition system, including: the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; the parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module; the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module; the cloud server stores parking space information of each parking lot; and the cloud server obtains the information of the remaining parking spaces of each parking lot according to the information of the vehicles entering and exiting each parking lot, and displays the information of the remaining parking spaces of each parking lot through the display module of each parking lot.
Further, the communication module includes a dual-band omnidirectional antenna array, and the dual-band omnidirectional antenna array includes: the device comprises a regular-hexagon reflecting floor and three pairs of double-frequency radiation unit groups which are erected on the reflecting floor and are arranged in central symmetry; the reflection floor is also provided with metal conducting holes corresponding to the dual-frequency radiation units one to one; the radiation transmission lines are electrically connected with the feed points of the corresponding double-frequency radiation units after respectively passing through the metal conducting holes; and the three pairs of dual-frequency radiating unit groups form a dual-frequency omnidirectional antenna array.
Furthermore, each pair of centrosymmetric dual-frequency radiation unit groups is provided with an even number of medium substrates, and the outer surface of each medium substrate is covered with a bent radiation patch part; the bent radiation patch part includes: the device comprises a square-shaped bent radiation structure, a U-shaped bent radiation structure, a connecting part and a matching unit; one end of the bent radiation structure is connected with one end of the U-shaped bent radiation structure; the other end of the U-shaped bent radiation structure is connected with one end of the connecting part; the other end of the connecting part is electrically connected with the radiation transmission line; and the matching units are arranged on two sides of the connecting part.
Further, the reflective floor is a metal floor; the radiation transmission line is a coaxial transmission line, an outer conductor of the coaxial transmission line is connected with the metal floor, and an inner conductor of the coaxial transmission line is electrically connected with a feed point of the dual-frequency radiation unit after penetrating through the metal conducting hole.
Further, the dielectric substrate of the dual-frequency radiation unit is square; the projection of each medium substrate on the reflecting floor is parallel to the corresponding side length of the regular hexagon; and the projection of the dielectric substrates of the two adjacent double-frequency radiation units on the reflecting floor forms an obtuse angle of 120 degrees.
Further, the dual-frequency radiating unit comprises a dielectric substrate, namely the number of the dielectric substrates of each pair of dual-frequency radiating unit groups is two, and the two dielectric substrates are symmetrical with respect to the center of the reflecting floor.
Further, the dual-frequency radiating elements include two dielectric substrates that are parallel to each other and arranged in a row, that is, the number of the dielectric substrates of each pair of dual-frequency radiating element groups is four.
Further, the dual-frequency radiating elements include two dielectric substrates parallel to each other and arranged in a row, that is, the number of the dielectric substrates of each pair of dual-frequency radiating element groups is four; and the two dielectric substrates in each dual-frequency radiating element are the same in size.
Further, the reflecting floor and the dual-frequency radiation unit are both PCB boards; the isolation between the dual-frequency radiation units is 10-20 dB; and the low frequency of the antenna of the dual-frequency omnidirectional antenna array is 790-894 MHz, and the high frequency of the antenna is 1710-2690 MHz.
In another aspect, the present invention further provides a working method of a parking lot data acquisition system, including: the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; the parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module; the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module; the cloud server stores parking space information of each parking lot; and the cloud server obtains the information of the remaining parking spaces of each parking lot according to the information of the vehicles entering and exiting each parking lot, and displays the information of the remaining parking spaces of each parking lot through the display module of each parking lot.
Compared with the prior art, the cloud server-based parking lot data acquisition system has the advantages that the cloud server-based parking lot data acquisition system can acquire the information of the rest parking lots in a plurality of parking lots in a certain area range, and share the information of the rest parking lots in each parking lot, so that a car owner can find the parking lot capable of parking in time.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a functional block diagram of a parking lot data acquisition system of the present invention;
fig. 2 is a schematic structural diagram of a dual-frequency omnidirectional antenna array of the parking lot data acquisition system of the present invention (corresponding to a first embodiment of the dual-frequency radiating element);
fig. 3 is a schematic structural diagram of a bent radiation patch part of a dual-band omnidirectional antenna array of the parking lot data acquisition system according to the present invention;
fig. 4 is a schematic structural diagram of a dual-frequency omnidirectional antenna array of the parking lot data acquisition system according to the present invention (corresponding to another embodiment of the dual-frequency radiating element);
fig. 5 is a schematic structural diagram of a dual-band omnidirectional antenna array of the parking lot data acquisition system according to the present invention (corresponding to a third embodiment of the dual-band radiating element).
Wherein:
a reflective floor 10; a reflective floor 11; a reflective floor 12; a dual-frequency radiating element 20; a dual-frequency radiating element 21; a dual-frequency radiating element 22; a metal conductive via 30; a metal conductive via 31; metal conductive vias 32; a bent radiating structure 41; a U-shaped bent radiating structure 51; a connecting portion 61; a matching unit 71.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
FIG. 1 is a schematic block diagram of a parking lot data acquisition system of the present invention.
As shown in fig. 1, this embodiment 1 provides a parking lot data acquisition system, including: the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; the parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module; the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module; the cloud server stores parking space information of each parking lot; and the cloud server obtains the information of the remaining parking spaces of each parking lot according to the information of the vehicles entering and exiting each parking lot, and displays the information of the remaining parking spaces of each parking lot through the display module of each parking lot.
Specifically, each parking lot data acquisition device is respectively distributed in each parking lot in a certain area range; the display module is arranged at the entrance of the corresponding parking lot, and the remaining parking space information of each parking lot in the area range is shared through the display module, so that a vehicle owner can find the parking lot suitable for parking.
The parking lot data acquisition system of this embodiment can gather the surplus parking stall information in a plurality of parking areas in certain region scope to with the surplus parking stall information in each parking area share out in each parking area department, the car owner of being convenient for can in time seek the parking area that can park.
Furthermore, in order to ensure that the information of the vehicles passing in and out of each parking lot is timely and accurately sent to the cloud server, the collection efficiency and the collection accuracy of the parking lot data collection system are improved, and the communication module of the parking lot data collection system is improved.
Fig. 2 is a schematic structural diagram of a dual-band omnidirectional antenna array of the parking lot data acquisition system according to the present invention (corresponding to the first embodiment of the dual-band radiating element).
As shown in fig. 2, the communication module includes a dual-band omnidirectional antenna array, and the dual-band omnidirectional antenna array includes: the reflection floor comprises a regular hexagonal reflection floor 10 and three pairs of double-frequency radiation unit groups which are erected on the reflection floor 10 and are arranged in central symmetry; the reflection floor 10 is also provided with metal conducting holes 30 corresponding to the dual-frequency radiation units 2 one by one; the radiation transmission lines are electrically connected with the corresponding feed points of the dual-frequency radiation units 20 after passing through the metal conducting holes 30 respectively; and the three pairs of dual-frequency radiating unit groups form a dual-frequency omnidirectional antenna array.
Specifically, the reflective floor 10 is uniformly divided into six parts; the number of the dual-frequency radiation units 2 is 6, the dual-frequency radiation units are respectively erected on six parts of the reflecting floor 10, each dual-frequency radiation unit 2 is respectively arranged close to the corresponding side length of the reflecting floor 10, and every two dual-frequency radiation units 2 which are symmetrical relative to the center of the reflecting floor 10 form a pair of dual-frequency radiation unit groups.
Fig. 3 is a schematic structural diagram of a bent radiation patch part of a dual-band omnidirectional antenna array of the parking lot data acquisition system of the present invention.
Each pair of centrosymmetric dual-frequency radiation unit groups is provided with an even number of medium substrates, and the outer surface of each medium substrate is covered with a bent radiation patch part; as shown in fig. 3, the bent radiation patch part includes: the zigzag radiation structure 41, the U-shaped zigzag radiation structure 51, the connecting portion 61 and the matching unit 71; wherein one end of the bent radiation structure 41 is connected with one end of the bent radiation structure 51; the other end of the U-shaped bent radiation structure 51 is connected with one end of the connecting part 61; the other end of the connecting part 61 is electrically connected with the radiation transmission line; and the matching units 71 are disposed at both sides of the connection part 61.
The reflective floor 10 is a metal floor; the radiation transmission line is a coaxial transmission line, an outer conductor of the coaxial transmission line is connected with the metal floor, and an inner conductor of the coaxial transmission line is electrically connected with a feed point of the dual-frequency radiation unit after penetrating through the metal conducting hole.
The dielectric substrate of the dual-frequency radiation unit 2 is square; the projection of each medium substrate on the reflecting floor 10 is parallel to the corresponding side length of the regular hexagon; and the projection of the dielectric substrate of two adjacent dual-frequency radiation units on the reflecting floor 10 forms an obtuse angle of 120 degrees.
As a first embodiment of the dual-band radiating element 2, the dual-band radiating element 2 includes one dielectric substrate 20, that is, the number of the dielectric substrates 20 of each pair of dual-band radiating element groups is two, and the two dielectric substrates 20 are symmetrical with respect to the center of the reflecting floor 10.
Fig. 4 is a schematic structural diagram of a dual-band omnidirectional antenna array of the parking lot data acquisition system according to the present invention (corresponding to another embodiment of the dual-band radiating element).
As shown in fig. 4, as another embodiment of the dual-band radiating element 2, the dual-band radiating element 2 includes two dielectric substrates 21 that are parallel to each other and arranged in a row, that is, the number of the dielectric substrates 21 of each pair of dual-band radiating element groups is four.
Fig. 5 is a schematic structural diagram of a dual-band omnidirectional antenna array of the parking lot data acquisition system according to the present invention (corresponding to a third embodiment of the dual-band radiating element).
As shown in fig. 5, as a third embodiment of the dual-band radiating element 2, the dual-band radiating element 2 includes two dielectric substrates 22 that are parallel to each other and arranged in a row, that is, the number of the dielectric substrates 22 of each pair of dual-band radiating element groups is four; and the two dielectric substrates 22 in each dual-band radiating element 2 are the same size.
The reflecting floor 10 and the dual-frequency radiation unit 2 are both PCB boards; the isolation between the dual-frequency radiation units 2 is 10-20 dB.
This dual-frenquency omnidirectional antenna array's antenna low frequency is 790~894MHz, and the antenna high frequency is 1710~2690MHz, and specific antenna index is shown as follows:
according to the above table, the low frequency of the antenna of the dual-frequency omnidirectional antenna array is 790-894 MHz, the VSWR of the antenna is less than 2, and the efficiency can be more than 55%; the high frequency of the antenna is 1710-2690 MHz, the VSWR of the antenna is less than 2.5, and the efficiency can reach about 60% at the same time; the method can well meet the requirements of dual-frequency 3G and 4G networks and has higher efficiency.
According to the isolation test of the antenna, the isolation of the antenna is more than 7dB when 790-894 MHz; when the frequency is 1710-2690 MHz, the power is more than 12 dB; the diagonal or parallel antenna isolation is greater than 15 dB; i.e., higher dB values in multiple frequency bands.
Generally speaking, the dual-frequency omnidirectional antenna array is arranged according to a specific mode, and a reflective floor and three pairs of dual-frequency radiation unit groups erected on the reflective floor are arranged in parallel to form the dual-frequency omnidirectional antenna array; each pair of dual-frequency radiation unit groups comprises a plurality of medium substrates, and dual-frequency bent radiation patch parts are arranged on the medium substrates; further, the radiation paster portion of buckling has set up the structure of buckling of returning the shape and the structural design is buckled to the U for the antenna can be better reasonable setting, forms multifrequency qxcomm technology antenna array, and sets up through simple feed, makes antenna structure have the frequency band width, easy processing, characteristics such as with low costs, satisfies dual-frenquency 3G 4G network demand, has obtained sufficient antenna gain greatly reduced energy consumption again.
Example 2
On the basis of embodiment 1, this embodiment 2 provides a working method of a parking lot data acquisition system, including: the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; the parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module; the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module; the cloud server stores parking space information of each parking lot; and the cloud server obtains the information of the remaining parking spaces of each parking lot according to the information of the vehicles entering and exiting each parking lot, and displays the information of the remaining parking spaces of each parking lot through the display module of each parking lot.
Specifically, the working principle, the working method, and the working process of the parking lot data acquisition system described in this embodiment are the same as those of the parking lot data acquisition system described in embodiment 1, and are not described herein again.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A parking lot data acquisition system, comprising:
the system comprises a cloud server and a plurality of parking lot data acquisition devices connected with the cloud server; wherein
The parking lot data acquisition device comprises a processor module, a parking lot entrance radio frequency identification module, a parking lot exit radio frequency identification module, a display module and a communication module, wherein the parking lot entrance radio frequency identification module, the parking lot exit radio frequency identification module, the display module and the communication module are connected with the processor module;
the parking lot entrance and exit radio frequency identification module is suitable for acquiring information of vehicles entering and exiting the parking lot and sending the information to the cloud server through the communication module;
the cloud server stores parking space information of each parking lot; and
the cloud server obtains the remaining parking space information of each parking lot according to the in-out vehicle information of each parking lot, and displays the remaining parking space information of each parking lot through the display module of each parking lot;
the communication module comprises a dual-frequency omnidirectional antenna array, and the dual-frequency omnidirectional antenna array comprises:
the device comprises a regular-hexagon reflecting floor and three pairs of double-frequency radiation unit groups which are erected on the reflecting floor and are arranged in central symmetry; wherein
The dielectric substrate of the dual-frequency radiation unit is square;
the projection of each medium substrate on the reflecting floor is parallel to the corresponding side length of the regular hexagon; and
the obtuse angle formed by the projection of the dielectric substrates of two adjacent double-frequency radiation units on the reflecting floor is 120 DEG, an
The reflection floor is also provided with metal conducting holes corresponding to the dual-frequency radiation units one by one;
the radiation transmission lines are electrically connected with the feed points of the corresponding double-frequency radiation units after respectively passing through the metal conducting holes; and
the three pairs of dual-frequency radiating unit groups form a dual-frequency omnidirectional antenna array;
each pair of centrosymmetric dual-frequency radiation unit groups is provided with an even number of medium substrates, and the outer surface of each medium substrate is covered with a bent radiation patch part;
the bent radiation patch part includes:
the device comprises a square-shaped bent radiation structure, a U-shaped bent radiation structure, a connecting part and a matching unit; wherein
One end of the bent radiation structure is connected with one end of the U-shaped bent radiation structure;
the other end of the U-shaped bent radiation structure is connected with one end of the connecting part;
the other end of the connecting part is electrically connected with the radiation transmission line; and
the matching units are disposed at both sides of the connection part.
2. The parking lot data collection system of claim 1,
the reflective floor is a metal floor;
the radiation transmission line is a coaxial transmission line, an outer conductor of the coaxial transmission line is connected with the metal floor, and an inner conductor of the coaxial transmission line is electrically connected with a feed point of the dual-frequency radiation unit after penetrating through the metal conducting hole.
3. The parking lot data collection system of claim 1,
the dual-frequency radiating element comprises a dielectric substrate, i.e.
The number of the dielectric substrates of each pair of double-frequency radiating unit groups is two, and the two dielectric substrates are symmetrical about the center of the reflecting floor.
4. The parking lot data collection system of claim 3,
the dual-frequency radiating unit comprises two dielectric substrates which are parallel to each other and are arranged in a row, namely the number of the dielectric substrates of each pair of dual-frequency radiating unit groups is four.
5. The parking lot data collection system of claim 4,
the dual-frequency radiating units comprise two dielectric substrates which are parallel to each other and arranged in a row, namely the number of the dielectric substrates of each pair of dual-frequency radiating unit groups is four; and
the two dielectric substrates in each dual-frequency radiating element are the same in size.
6. The parking lot data collection system of claim 5,
the reflecting floor and the dual-frequency radiation unit are both PCB boards;
the isolation between the dual-frequency radiation units is 10-20 dB; and
the low frequency of the antenna of the dual-frequency omnidirectional antenna array is 790-894 MHz, and the high frequency of the antenna is 1710-2690 MHz.
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| CN201810925618.7A CN108806326B (en) | 2018-08-15 | 2018-08-15 | Parking lot data acquisition system based on cloud server |
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| CN201810925618.7A CN108806326B (en) | 2018-08-15 | 2018-08-15 | Parking lot data acquisition system based on cloud server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007235460A (en) * | 2006-02-28 | 2007-09-13 | Mitsumi Electric Co Ltd | Antenna system |
| CN103646452A (en) * | 2013-12-09 | 2014-03-19 | 张秀凤 | Garage management and control system |
| CN105118303B (en) * | 2015-07-17 | 2018-03-27 | 袁丽 | Vehicle enters position detecting method under intelligent parking monitoring management system and car-parking model |
| CN105702086A (en) * | 2016-04-26 | 2016-06-22 | 北方民族大学 | Parking lot management system |
| CN106058448A (en) * | 2016-05-17 | 2016-10-26 | 北京邮电大学 | Multi-frequency band novel Koch fractal antenna for mobile terminal |
| CN106228619A (en) * | 2016-08-08 | 2016-12-14 | 深圳市宽海科技有限公司 | A kind of stably stop course management system and method |
| CN108281028A (en) * | 2016-12-29 | 2018-07-13 | 航天信息股份有限公司 | Parking process method, server, controller and parking process system |
| CN206684791U (en) * | 2017-05-22 | 2017-11-28 | 广东艾科智泊科技股份有限公司 | A kind of integral type control machine that can voluntarily reconfigure parameter |
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