CN104994267B - It is a kind of to be used to establish the camera of address automatically and establish address approach automatically - Google Patents

Abstract

The invention discloses a kind of for establishing the camera of address automatically and establishing address approach automatically, including two ISO7024 optoisolators, FPGA and processor, optoisolator delivers a signal to FPGA by RX I/O interfaces, FPGA delivers a signal to optoisolator by TX I/O interfaces, FPGA transfers mutually signal with processor by SPI interface, FPGA has the function of interrupt handler, include 2 UART interfaces and 1 SPI in FPGA from interface, wherein UART interface and SPI are transferred between interface into row information, information transmission is framework in AVLAN buses, camera of the present invention automatically establishes different addresses, facilitate differentiation.

Description

It is a kind of to be used to establish the camera of address automatically and establish address approach automatically

Technical field

It is specifically a kind of to be used to establish the camera of address automatically and establish address party automatically the present invention relates to field of color sorterMethod.

Background technology

On domestic market, camera is essential, the multicamera system of most color selectors in color selectorThere are two types of forms to exist：First, hardware possessed by each camera is different, so the operator of machine can only be leaned on to identify differenceCamera and be used；Second is that multiple cameras have identical hardware, and software is different, but software has power down to keep work(Can, once after power failure reconnects power supply, also need the information stored by the operation of people before removing.

Since mode existing for both the above camera is required for realizing the use of camera by the operation of people, both consumedThe substantial amounts of time, and the working strength of operator is added, it is also easy to malfunction, this has just seriously affected the production efficiency of enterprise.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of for establishing the camera of address automatically and establishing address automaticallyMethod, camera automatically establish different addresses, facilitate differentiation.

In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：

A kind of camera for being used to establish address automatically, passes through including two optoisolators, FPGA and processor, optoisolatorRX-I/O interfaces deliver a signal to FPGA, and FPGA delivers a signal to optoisolator by TX-I/O interfaces, and FPGA leads to processorCross SPI interface and transfer signal mutually, FPGA has the function of interrupt handler, include in FPGA 2 UART interfaces and 1 SPI fromInterface, wherein UART interface and SPI are transferred between interface into row information, and information transmission is framework in AVLAN buses.

Preferably, the optoisolator model ISO7024.

Preferably, the optoisolator highest transmission speed is 25M.

Preferably, the transmission speed between camera transceiver interface is 10M.

Automatically address approach is established, comprised the following steps：

The initial address of all cameras is identical, when there is a camera to be connected with the screen in machine, then the category of this cameraProperty become different from other cameras, be based on, remaining be from；Then master sends order, it is desirable that from sequence, from being randomly derived groundMaster is responded in location, main to check whether obtained number of addresses equal with number of cameras, such as it is equal, carry out next step, differ, then requireOne of them changes address from camera, remaining is constant, has changed address from camera and has issued master again, master continues checking for obtaining addressWhether number is identical with camera number, goes down successively, until obtained number of addresses is identical with number of cameras, then starts in next step.

Beneficial effects of the present invention；

ISO7024 is optically isolated, avoids influencing each other for electro instrument noise between information transmit-receive, and its highest transmission speedDegree is up to 25M, and the transmission speed between camera transceiver interface is 10M, so ensures that the stability of camera transmission, this hairBright convenience establishes address automatically, improves enterprises production efficiency.

Description of the drawings

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is camera internal structure diagram of the present invention.

Fig. 2 is FPGA internal interfaces schematic diagram of the present invention.

Fig. 3 is FPGA inner workings schematic diagram of the present invention.

Fig. 4 is that the present invention establishes address flow chart automatically.

Specific embodiment

As shown in Figure 1, the present invention discloses a kind of camera for being used to establish address automatically, it is optically isolated including two ISO7024Device, FPGA and processor, optoisolator deliver a signal to FPGA by RX-I/O interfaces, and FPGA is transferred by TX-I/O interfaces to be believedNumber to optoisolator, FPGA transfers mutually signal with processor by SPI interface, and FPGA has the function of interrupt handler, such as Fig. 2It is shown, 2 UART interfaces and 1 SPI are included in FPGA from interface, wherein UART interface and SPI between interface into row informationIt transfers, as shown in figure 3, information transmission is framework in AVLAN buses.

Single camera has transmission-receiving function, and passes through relay-type transmission between camera, and ISO7024 optoisolators are thenAvoid influencing each other for electro instrument noise between information transmit-receive, and its highest transmission speed is up to 25M, and camera transceiver interfaceBetween transmission speed for 10M, so ensure that the stability of camera transmission.

After UART interface information receives, generate receive information and finish interruption, the SPI main interfaces in processor startExtract data；When SPI main interfaces extract data in processor, extraction data message is sent to from interface, SPI is from connecing in FPGAMouth sends information, is passed to by AVLAN buses in UART interface, the data in UART interface also need to transfer by AVLAN busesIn the SPI main interfaces for then passing to processor again from interface to SPI.

As shown in figure 4, the initial address of all cameras is identical, when there is a camera to be connected with the screen in machine, then thisThe attribute of platform camera becomes different from other cameras, be based on, remaining be from；Then master sends order, it is desirable that from sequence, fromMachine obtains address, responds master, main to check whether obtained number of addresses equal with number of cameras, such as it is equal, carry out next step, noDeng, then require one of them from camera change address, remaining is constant, has changed address from camera and has issued master again, main to continue to examineIt whether identical with camera number checks in number of addresses, goes down successively, until obtained number of addresses is identical with number of cameras, then under startingOne step.

The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present inventionSpirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present inventionWithin enclosing.

Claims (5)

1. a kind of camera for being used to establish address automatically, which is characterized in that including two optoisolators, FPGA and processor, lightIsolator delivers a signal to FPGA by RX-I/O interfaces, and FPGA delivers a signal to optoisolator, FPGA by TX-I/O interfacesSignal is transferred mutually by SPI interface with processor, FPGA has the function of interrupt handler, includes 2 UART interfaces in FPGAWith 1 SP I from interface, wherein UART interface and SPI is transferred between interface into row information, and information transmission is framework in AVLANIn bus, after UART interface information receives, generate receive information and finish interruption, the SP I main interfaces in processor startExtract data；When SPI main interfaces extract data in processor, extraction data message is sent to SP I from interface, SPI in FPGAInformation is sent from interface, is passed to by AVLAN buses in UART interface, the data in UART interface are also needed through AVLAN busesSPI is transferred to then to pass to again from interface in the SPI main interfaces of processor.

A kind of 2. camera for being used to establish address automatically according to claim 1, which is characterized in that the optically isolated typeNumber be I SO7024.

3. a kind of camera for being used to establish address automatically according to claim 1 or 2, which is characterized in that described optically isolatedDevice highest transmission speed is 25M.

It is 4. according to claim 1 a kind of for establishing the camera of address automatically, which is characterized in that camera transceiver interface itBetween transmission speed be 10M.

A kind of 5. method for establishing address automatically using camera as described in claim 1, which is characterized in that including following stepSuddenly：

The initial address of all cameras is identical, and when there is a camera to be connected with the screen in machine, then the attribute of this camera becomesTo be different from other cameras, be based on, remaining be from；Then master sends order, it is desirable that from sequence, from address is randomly derived, returnsShould lead, it is main to check whether obtained number of addresses equal with number of cameras, such as it is equal, carry out next step, differ, then require whereinOne is changed address from camera, remaining is constant, change address from camera and has been issued master again, lead continue checking for obtaining number of addresses beIt is no identical with camera number, go down successively, until obtained number of addresses is identical with number of cameras, then start in next step.