CN113014787A - Data access circuit and tilt photography cloud platform - Google Patents
Data access circuit and tilt photography cloud platform Download PDFInfo
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- CN113014787A CN113014787A CN202110421449.5A CN202110421449A CN113014787A CN 113014787 A CN113014787 A CN 113014787A CN 202110421449 A CN202110421449 A CN 202110421449A CN 113014787 A CN113014787 A CN 113014787A
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- circuit
- card
- data access
- interface circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to the technical field of circuits. The invention discloses a data access circuit and an oblique photography holder, wherein the data access circuit is suitable for data storage and reading of equipment with SD card storage, and comprises a card slot mainboard and a data storage unit, wherein the card slot mainboard is provided with a switching detection circuit, a switching switch circuit, an equipment interface circuit and a card reader interface circuit, the equipment interface circuit and the card reader interface circuit are alternatively connected with the data storage unit through the switching switch circuit, the switching detection circuit is used for detecting whether the card slot mainboard is powered by a main power supply interface or a USB (universal serial bus) interface, and driving the switching switch circuit to perform corresponding switching according to a detection result, the equipment interface circuit is connected with a data read-write port of the equipment, and the card reader interface circuit is an interface circuit of USB3.0 or more. The invention has the advantages of high data reading speed, no need of carrying a special power supply for power supply, convenient operation, high operation efficiency, high safety and reliability and long service life.
Description
Technical Field
The invention belongs to the technical field of circuits, and particularly relates to a data access circuit and an oblique photography holder.
Background
After the operation of the tilt photography tripod head is finished, the data shot by the camera of the tilt photography tripod head needs to be read, and the existing data reading schemes mainly include the following two types:
the method has the disadvantages that the USB interface of the camera used for oblique photography at present is mostly USB2.0 standard, the reading speed limit can only reach 480Mbps, the theoretical reading speed is 60MB/s, and the method takes a large amount of waiting time for operating personnel to read data considering that the data volume is huge in actual operation; in addition, the camera inside the pan/tilt head can read data through the USB line only when the camera is powered on and started, which is not beneficial for outdoor operators to read data without carrying a power supply or under the condition that the power supply is insufficient.
The method has the disadvantages that the card seat assembly module is in physical movable connection with the system, the phenomena of poor contact and the like caused by interface oxidation and looseness can be caused after long-time use, and the service life of the interface is lower; meanwhile, the data storage module needs to be manually plugged and unplugged, so that the operation is complicated, and the data module is easily damaged by human static electricity in the operation process, thereby causing huge loss.
In addition, for historical reasons, many other existing devices with SD card (including TF card) storage are equipped with a low-speed USB2.0 protocol, and have the problem of slow reading speed, and improvement is needed.
Disclosure of Invention
The present invention is directed to a data access circuit and a tilt head for solving the above-mentioned problems.
In order to achieve the purpose, the invention adopts the technical scheme that: a data access circuit is suitable for data storage and reading of equipment with SD card storage and comprises a card slot mainboard and a data storage unit, wherein the card slot mainboard is provided with a switching detection circuit, a switching circuit, an equipment interface circuit and a card reader interface circuit, the equipment interface circuit and the card reader interface circuit are alternatively connected with the data storage unit through the switching circuit, the switching detection circuit is used for detecting whether the card slot mainboard is powered by a main power supply interface or a USB (universal serial bus) interface, the switching circuit is driven to carry out corresponding switching according to a detection result, the equipment interface circuit is connected with a data read-write port of the equipment, and the card reader interface circuit is an interface circuit with a USB3.0 or more.
Further, the data storage unit is a TF card.
Furthermore, the card slot mainboard is provided with a card seat interface circuit, and the TF card is connected with the change-over switch circuit through the card seat interface circuit.
Further, the change-over switch circuit is implemented by two semiconductor electronic switches.
Further, the bandwidth of the semiconductor electronic switch is larger than 1.5 GHz.
Further, the switching detection circuit is realized by adopting a single Schmitt trigger inverter.
Furthermore, the card reader also comprises a hub, and the card reader interface circuit is connected with external reading equipment through the hub.
Furthermore, the concentrator is a 10Gbps concentrator, and the output interface is a TYPE-C interface.
Further, the device is a camera.
The invention also discloses an oblique photography holder which is provided with the data access circuit.
The invention has the beneficial technical effects that:
the data reading device has the advantages of high data reading speed, no need of carrying a special power supply for supplying power, convenience in operation, no need of considering the reading logic of the original equipment, improvement of the operating efficiency, integration of data storage and reading, no need of plugging and unplugging, avoidance of the problems of poor contact caused by oxidation and looseness of interfaces and damage of a data module caused by human body static electricity, high safety and reliability and long service life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of a circuit configuration according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of a switch circuit according to a first embodiment of the invention;
fig. 3 is a circuit diagram of a card socket interface circuit according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of a switching detection circuit according to a first embodiment of the invention.
Fig. 5 is a circuit structure block diagram of a second embodiment of the invention.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
Example one
As shown in fig. 1, a data access circuit is suitable for data storage and reading of a device with SD card storage, in this embodiment, the device is a camera of an oblique photography pan-tilt head, but is not limited thereto, and in some embodiments, the device may also be other existing devices with SD card storage and equipped with a USB2.0 or below data reading interface.
The card slot comprises a card slot main board 100 and a data storage unit 3, wherein the card slot main board 100 is provided with a switching detection circuit 1, a switching switch circuit 2, an equipment interface circuit and a card reader interface circuit 4, in the specific embodiment, the equipment interface circuit is a camera card seat interface circuit 5 and is used for being connected with an original data read-write port of a camera 7 (at this moment, an original SD card of the camera 7 can be removed, namely, image data acquired by the camera 7 is not stored in the original SD card any more).
The camera card seat interface circuit 5 and the card reader interface circuit 4 are alternatively connected to the data storage unit 3 through the switch circuit 2, the switch detection circuit 1 is configured to detect whether the card slot motherboard 100 is powered by the main power interface or the USB (i.e., powered by the card reader interface circuit 4), and drive the switch circuit 2 to perform corresponding switching according to the detection result, the card reader interface circuit 4 is an interface circuit with USB3.0 or more, and the card reader interface circuit 4 is configured to be connected to an external reading device.
In this embodiment, the data storage unit 3 is a TF card, but in other embodiments, the data storage unit 6 may also be an SD card or other existing data storage devices.
Further, the card slot main board 100 is provided with a card seat interface circuit 6, the TF card is connected with the change-over switch circuit 2 through the card seat interface circuit 6, and the TF card is convenient to assemble and convenient to replace by arranging the card seat interface circuit 6.
In this embodiment, the change-over switch circuit 2 is implemented by using two semiconductor electronic switches, and the structure is simple and easy to implement, but the invention is not limited thereto.
Preferably, in this embodiment, the bandwidth of the semiconductor electronic switch is greater than 1.5GHz, so as to further increase the access speed, in this embodiment, the switch circuit 2 is implemented by using analog switch ICs 200 and 201 with a model of TMUX1574RSVR, the bandwidth of the analog switch ICs 200 and 201 is 2GHz, and the specific circuit structure is shown in fig. 2, which is not described in detail.
Preferably, in this embodiment, the switching detection circuit 1 is implemented by using a single schmitt trigger inverter U201 with a model number SN74AHC1G14D, which is simple in structure and easy to implement, and the specific circuit is shown in fig. 4, but not limited thereto.
In this embodiment, the card socket interface circuit 6 is implemented by using a connector J200 with model 47219 and 2001, and the specific circuit is shown in fig. 3. Of course, in other embodiments, the socket interface circuit 6 may be implemented with other connectors.
The working process is as follows:
when the data access circuit is used, the data access circuit is assembled in the oblique photography holder, the original SD card of the camera 7 is removed, and the original data read-write port of the camera 7 is connected with the camera card seat interface circuit 5. When the switching detection circuit 1 detects that the card slot main board 100 is powered by a main power interface, namely the oblique photography holder is powered by the main power, and the camera 7 is in a working state to take a picture at the moment, the switching switch circuit 2 is driven to switch the camera card seat interface circuit 5 to be connected with the data storage unit 3(TF card), and the camera 7 can normally read and write the TF card at the moment; when the switching detection circuit 1 detects that the card slot main board 100 is powered by the USB, that is, the card reader interface circuit 4 is connected to the computer 8 (which indicates that data needs to be read at this time), the switching switch circuit 2 is driven to switch the card reader interface circuit 4 to be connected to the data storage unit 3(TF card), the computer 8 can directly read data of the TF card (without considering the original reading logic of the camera 7 or providing a power supply to start the camera 7), the highest reading speed can reach 160MB/S, the operation efficiency is improved, the data storage and reading are integrally set, plugging and unplugging are not required, the problems of poor contact caused by oxidation and looseness of the interface and the damage of a data module caused by human static electricity are avoided, the safety and reliability are high, and the service life is long.
Example two
As shown in fig. 5, in this embodiment, the number of the cameras 7 of the tilt head is multiple, and if there are 5 cameras, the number of the data access circuits is also 5 accordingly, the camera socket interface circuit 5 of each data access circuit is connected to the original data read/write port of each camera 7, and the card reader interface circuit 4 of each data access circuit is connected to the computer 8 through a hub 9, so as to further reduce the number of interfaces.
Preferably, in this embodiment, the hub 9 is a 10Gbps hub, and the output interface is a TYPE-C interface, so as to further improve the reading speed, but the invention is not limited thereto.
The invention also discloses an oblique photography holder which is provided with the data access circuit.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A data access circuit is suitable for data storage and reading of a device with SD card storage, and is characterized in that: the card slot mainboard is provided with a switching detection circuit, a switching switch circuit, an equipment interface circuit and a card reader interface circuit, wherein the equipment interface circuit and the card reader interface circuit are alternatively connected with the data storage unit through the switching switch circuit, the switching detection circuit is used for detecting whether the card slot mainboard is powered by a main power interface or a USB (universal serial bus) and driving the switching switch circuit to carry out corresponding switching according to a detection result, the equipment interface circuit is connected with a data read-write port of equipment, and the card reader interface circuit is an interface circuit of USB3.0 or more.
2. The data access circuit of claim 1, wherein: the data storage unit is a TF card.
3. The data access circuit of claim 2, wherein: the card slot mainboard is provided with a card seat interface circuit, and the TF card is connected with the change-over switch circuit through the card seat interface circuit.
4. The data access circuit of claim 1, wherein: the change-over switch circuit is implemented using two semiconductor electronic switches.
5. The data access circuit of claim 4, wherein: the bandwidth of the semiconductor electronic switch is larger than 1.5 GHz.
6. The data access circuit of claim 1, wherein: the switching detection circuit is implemented using a single schmitt trigger inverter.
7. The data access circuit of claim 1, wherein: the card reader interface circuit is connected with external reading equipment through the concentrator.
8. The data access circuit of claim 7, wherein: the concentrator is a 10Gbps concentrator, and the output interface is a TYPE-C interface.
9. The data access circuit of claim 1, wherein: the device is a camera.
10. A tilt photography cloud platform which is characterized in that: data access circuitry as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110421449.5A CN113014787A (en) | 2021-04-20 | 2021-04-20 | Data access circuit and tilt photography cloud platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110421449.5A CN113014787A (en) | 2021-04-20 | 2021-04-20 | Data access circuit and tilt photography cloud platform |
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| CN113014787A true CN113014787A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110421449.5A Pending CN113014787A (en) | 2021-04-20 | 2021-04-20 | Data access circuit and tilt photography cloud platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114968882A (en) * | 2022-03-25 | 2022-08-30 | 优利德科技(中国)股份有限公司 | Device for automatically switching read-write direction of storage medium |
Citations (4)
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| US20100140354A1 (en) * | 2008-12-08 | 2010-06-10 | Micro-Star International Co., Ltd. | Debug device sharing a memory card slot with a card reader |
| CN207460363U (en) * | 2017-12-05 | 2018-06-05 | 中国科学院遥感与数字地球研究所 | Unmanned plane polyphaser data store and reading device |
| CN111708490A (en) * | 2020-05-27 | 2020-09-25 | 神州高铁技术股份有限公司 | Automatic data dump method and device |
| CN215120942U (en) * | 2021-04-20 | 2021-12-10 | 厦门致睿智控地信科技股份有限公司 | A data access circuit and a tilting camera head |
-
2021
- 2021-04-20 CN CN202110421449.5A patent/CN113014787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100140354A1 (en) * | 2008-12-08 | 2010-06-10 | Micro-Star International Co., Ltd. | Debug device sharing a memory card slot with a card reader |
| CN207460363U (en) * | 2017-12-05 | 2018-06-05 | 中国科学院遥感与数字地球研究所 | Unmanned plane polyphaser data store and reading device |
| CN111708490A (en) * | 2020-05-27 | 2020-09-25 | 神州高铁技术股份有限公司 | Automatic data dump method and device |
| CN215120942U (en) * | 2021-04-20 | 2021-12-10 | 厦门致睿智控地信科技股份有限公司 | A data access circuit and a tilting camera head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114968882A (en) * | 2022-03-25 | 2022-08-30 | 优利德科技(中国)股份有限公司 | Device for automatically switching read-write direction of storage medium |
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Address after: Unit 701-702, 63 Chengyi North Street, phase III, software park, Xiamen City, Fujian Province, 361300 Applicant after: Xiamen zhiruizhi Dixin Technology Co.,Ltd. Address before: Unit 701-702, 63 Chengyi North Street, phase III, software park, Xiamen City, Fujian Province, 361300 Applicant before: XIAMEN ZHIRUI ZHIKONG DIXIN TECHNOLOGY CO.,LTD. |