CN105072207A - LED asynchronous full-color control card and method for automatic identification with control computer - Google Patents
LED asynchronous full-color control card and method for automatic identification with control computer Download PDFInfo
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- CN105072207A CN105072207A CN201510370527.8A CN201510370527A CN105072207A CN 105072207 A CN105072207 A CN 105072207A CN 201510370527 A CN201510370527 A CN 201510370527A CN 105072207 A CN105072207 A CN 105072207A
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- control card
- search
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- network
- bag
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4552—Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
Abstract
The present invention discloses an LED asynchronous full-color control card and a method for automatic identification with a control computer. Control card software is installed on a control card while identification connection software is installed on a control computer, and the control card software and the identification connection software are connected and communicate through a network. After a plurality of control cards are connected into a local area network, the identification connection software and the control card software are started, the identification connection software begins to search for control card devices, an effective IP address is acquired by a network environment where the control card software is combined with the identification connection software, and thus the identification connection software can automatically identify the control cards. With adoption of the control card and the method, a user does not need to set the IP address of the control card and only needs to connect the control card into the local area network, such that the identification connection software can search for the control card. The problem of inconvenience caused by the conventional situation that the control card needs to be assigned with an IP address so as to be connected with the control computer when the user connects the control card into the local area network is solved.
Description
Technical field
The present invention relates to field of computer technology, especially relate to the asynchronous full-color control card of a kind of LED and automatically know method for distinguishing with control computer.
Background technology
Along with socioeconomic development, the living standard of people constantly improves, and also requires more and more higher to the quality of life.Convenient, efficiently to become people continuous pursuit.The technical development that in life, LED display diffuses information is become better and better, the various interference in facing the reality, and the design of LED display also requires more and more higher.
LED asynchronous control system common in the market operates control card by computer by local net network, is sent to control card by the good program of computer editing by network, carries out program play the object reaching off-line display by control card.Because lan networking environment is complicated, generally control card is provided with fixed ip address when dispatching from the factory, and when user disposes control card, needs to reset control card IP address, keeps being in same network segment with the IP address of computer.
The control card recognition technology before use of prior art LED display: when control card dispatches from the factory, default setting fixed ip address; User is when using control card, and what need the IP address of change control card and the machine network interface is same network segment; After the IP address of control card is set in software again, the control card in local area network (LAN) can be recognized.This technology also exists problems such as difficult arranging, not convenient, and such as: because user computer usage level is uneven, when control card is disposed, many users are very difficult carries out the setting of IP address to control card and computer; In same local area network (LAN), when having multiple control card, need to arrange multiple control cards, bring extra work amount to user; Because control card is provided with fixed ip address, therefore, the problem of IP address conflict may be there is.
Summary of the invention
Control card IP cannot be automatically identified for LED display asynchronous control-card system in above-mentioned prior art, cause IP that not convenient, IP is set and arrange that workload is large, efficiency is not high or IP address may exist the problems such as conflict, the invention provides the asynchronous full-color control card of a kind of LED and automatically know method for distinguishing with control computer, combine by control card the network environment controlling computer and get an effective IP address in a local network, realize controlling computer and control card whether same network segment, all can automatically identify control card IP.
To achieve these goals, the invention provides the asynchronous full-color control card of a kind of LED, it is characterized in that, comprise Rawsocket module, network address distribution module and search response module; Control card is by network connection control computer, and this control computer comprises for sending the broadcast search module of searching for control card equipment in search equipment bag to local area network (LAN) and for sending network address information feedback packet to the network address information respond module on control card.
Described Rawsocket module receives the search equipment bag that broadcast search module sends, and then forges and send the network address information that the inquiry of network address information inquiry packet sends the control computer of this search equipment bag.
Described network address information respond module receives network address information inquiry packet, and concurrent SCN Space Cable Network address information feedback packet is to Rawsocket module; Rawsocket module is forged ARP request bag and is sent in local area network (LAN) the IP address traveling through current local area network subnet section, and inquiry is not by the IP address used.
Described network address distribution module receives the feedback information of ARP request bag, is control card distributing IP address according to feedback information, and initialization control card network interface eth0.
Described broadcast search module sends in search equipment bag to local area network (LAN) and searches for the control card distributing the network address; Search response module receives search equipment bag and sends search feedback packet response broadcast search module; Broadcast search module sends to obtain on facility information bag to control card and obtains control card facility information; After search response resume module obtains facility information bag, transmitting apparatus information feed back bag is on control computer, controls computer and automatically identifies control card.
The asynchronous full-color control card of a kind of LED knows method for distinguishing automatically with control computer, it is characterized in that, comprises the following steps:
(1) control card IP address assignment.
(1) non-DHCP automatic acquisition distributes.
A, broadcast search block search card maker.
B, Rawsocket module receives search equipment bag.
C, Rawsocket module extracts from the packet header of search equipment bag the IP controlling computer.
D, Rawsocket module forges network address information inquiry packet.
E, Rawsocket module sends the network address information that the inquiry of network address information inquiry packet sends the control computer of this broadcast search bag.
F, network address information respond module receive network address information inquiry packet.
G, network address information respond module send the inquiry of network address information feedback packet response Rawsocket module.
H, Rawsocket module receives network address information feedback packet; And calculate the network segment of current local area network.
I, Rawsocket module forges ARP request bag.
J, Rawsocket module sends ARP request bag in local area network (LAN).
The IP address of k, ARP request bag traversal current local area network subnet section, and inquiry is not by the IP address used.
Feedback information feeds back in the distribution module of the network address by l, ARP request bag.
M, network address distribution module receive the feedback information of ARP request bag, are control card distributing IP address according to feedback information, and initialization control card network interface eth0.
(2) control computer and automatically identify control card.
(1) broadcast search module sends search equipment search packet control card equipment.
(2) search response module receives search equipment bag, and sends search feedback packet response broadcast search module.
(3) broadcast search module receives search feedback packet, and sends acquisition facility information bag.
(4) search response module receives and obtains facility information bag.
(5) search response module transmitting apparatus information feed back bag is on control computer.
(6) control connecting computer receiving unit information feed back bag, from facility information feedback packet, automatically identify control card.
(3) computer connection control card is controlled.
As preferably, described control card IP address assignment also comprises fixed ip address and distributes and the distribution of DHCP automatic acquisition.
As preferably, described fixed ip address distributes and comprises the following steps:
(1) control card is started.
(2) this fixed ip address is distributed to network interface card eth0 by control card automatically.
(3) network service is carried out by this P address and control computer in control card.
As preferably, described DHCP automatic acquisition distributes and comprises the following steps:
(1) control card is started.
(2) system cloud gray model on control card carries service udhcpc.
(3) control card coordinates the Dynamic Host Configuration Protocol server in local area network (LAN) to carry out IP address assignment by DHCP procotol.
(4) control card is connected with the identification of control computer.
Adopt the beneficial effect that the present invention produces: the present invention combines by control card the network environment controlling computer and gets an effective IP address in a local network, when controlling search computer control card, control card feeds back this valid ip address to control computer, control computer by automatically identifying this IP address, connection control card.The present invention does not need user to arrange control card IP address, after control card access to LAN, controls computer and just can search control card, when solving user access control card, needs to arrange the inconvenience that control card IP address ability connection control computer brings.
Accompanying drawing explanation
Fig. 1 is the asynchronous full-color control card of a kind of LED of the present invention and automatically knows total frame diagram of method for distinguishing with control computer.
Fig. 2 is the asynchronous full-color control card of a kind of LED of the present invention and automatically knows with control computer the flow chart that in method for distinguishing, control card IP address assignment obtains.
Fig. 3 is a kind of asynchronous full-color control card of LED of the present invention and automatically knows in method for distinguishing with control computer and control computer and automatically identify
The flow chart of connection control card.
Embodiment
The principle that realizes of this method is that control card is provided with control card software, and control computer and be provided with identification connection software, control card software is connected software by network connecting communication with identification; After multiple control card access to LAN, start and identify connection software and control card software, identify that connecting software starts to search for control card equipment, combine through control card software and identify that the network environment connecting software gets an effective IP address in a local network, identification connection software can recognize in local area network (LAN) automatically exists this control card, and can set up network connection relation with control card.Below in conjunction with specification drawings and specific embodiments, substantive distinguishing features of the present invention is further described.
As shown in Figure 1 to Figure 3, the asynchronous full-color control card of a kind of LED provided by the invention, comprises Rawsocket module, network address distribution module and search response module.Control card is by network connection control computer, and this control computer comprises for sending the broadcast search module of searching for control card equipment in search equipment bag to local area network (LAN) and for sending network address information feedback packet to the network address information respond module on control card.
Broadcast search module sends search equipment search packet control card equipment in local area network (LAN), Rawsocket module receives the search equipment bag that broadcast search module sends, the IP of the control computer sending this search equipment bag is extracted from the packet header of search equipment bag, and then forge and send the network address information (field of filling due to the network address information inquiry packet of forging is imperfect, and the fire compartment wall controlling computer needs to connect software to identification and adds exception) that the inquiry of network address information inquiry packet sends the control computer of this search equipment bag.Network address information respond module receives network address information inquiry packet, and concurrent SCN Space Cable Network address information feedback packet is to Rawsocket module, and the request of present network address information inquired by response limiting card.After control card receives inquiry response, according to the network segment controlling the network address information feedback packet fed back of computer and calculate current local area network, and then Rawsocket module forgery ARP request bag is sent in local area network (LAN) the IP address traveling through current local area network subnet section, and inquiry is not by the IP address used.Network address distribution module receives the feedback information of ARP request bag, is control card distributing IP address (all not receiving the IP address of arp request feedback after certain IP address being sent to N arp request) according to feedback information, and initialization control card network interface eth0.More specifically, when network address distribution module receives the access of IP address, if this IP inquires time-out, then this IP address does not have the network equipment to take, this IP address assignment is effective address by network address distribution module, and carry out initialization eth0 network interface with this IP address, thus realize distributing the network address of eth0 network interface, obtain legitimate ip address.
Wherein, the network address information feedback packet that network address information respond module sends mainly comprises: IP address, subnet mask, default gateway, dns server address etc.
Broadcast search module sends in search equipment bag to local area network (LAN) and searches for the control card distributing the network address.Because network environment is complicated, in same local area network (LAN) (local area network (LAN) without broadcast isolation), the IP address of possible control card is in the different network segments from the IP address of computer.In this case, search equipment bag can only be used search for, in order to avoid causing the broadcast flooding of local area network (LAN) to cause network congestion, control computer and adding a certain amount of time delay between transmission two search equipment bags.Search response module reception search equipment bag also sends search feedback packet response broadcast search module: when the source IP address of search equipment bag and the IP address of current control card are in same network segment, search response module uses directed UDP bag to feed back; That search response module uses udp broadcast bag to feed back when the source IP address of search equipment bag and the IP of current control card are in different segment.Broadcast search module sends to obtain on facility information bag to control card and obtains control card facility information.Search response module receives and obtains facility information bag, the network address of this acquisition facility information bag and control card is contrasted, when the network address of the network address and control card that obtain facility information bag is in same network segment, control card carries out orientation feedback to control computer; When the network address of the network address and control card that obtain facility information bag is in different segment, control card feeds back by using udp broadcast bag control computer.Namely after search response resume module obtains facility information bag, transmitting apparatus information feed back bag is on control computer, control computer and automatically identify control card, thus realization controls computer and whether control card is in the object (without broadcasting the local area network (LAN) of isolating) that same network segment can search control card.
More specifically, when the eth0 network interface of control card software is without valid ip address, control card software creates Rawsocket module be used for monitoring the packet on eth0 network interface, IP address is not arranged to eth0 because system is current, the socket being based upon UDP/TCP layer does not receive any packet, create Rawsocket module to monitor the packet on eth0 network interface, when eth0 network interface is without valid ip address initialization, can also receives and send network packet.Network address distribution module is used for when eth0 network interface is without valid ip address initialization, for eth0 obtains a valid ip address, and initialization eth0.Search response module is used for after the initialization of eth0 network interface completes, and to identifying that the search equipment bag connecting software transmission responds, thus reaches the object that control computer finds control card.
Present invention also offers the asynchronous full-color control card of a kind of LED and control computer from the method be dynamically connected, it comprises the following steps:
(1) control card IP address assignment.
(1) non-DHCP automatic acquisition distributes.
Non-DHCP automatic acquisition distributes a kind of method of salary distribution used when being and not disposing Dynamic Host Configuration Protocol server in the local area network (LAN) of user, and this non-DHCP automatic acquisition distribution is coordinated by control card software to identify that connecting the IP address of software to control card network interface card eth0 carries out distributing realization.It specifically comprises the following steps:
A, broadcast search block search card maker;
B, Rawsocket module receives search equipment bag;
C, Rawsocket module extracts from the packet header of search equipment bag the IP controlling computer;
D, Rawsocket module forges network address information inquiry packet;
E, Rawsocket module sends the network address information that the inquiry of network address information inquiry packet sends the control computer of this broadcast search bag;
F, network address information respond module receive network address information inquiry packet;
G, network address information respond module send the inquiry of network address information feedback packet response Rawsocket module;
H, Rawsocket module receives network address information feedback packet; And calculate the network segment of current local area network;
I, Rawsocket module forges ARP request bag;
J, Rawsocket module sends ARP request bag in local area network (LAN);
The IP address of k, ARP request bag traversal current local area network subnet section, and inquiry is not by the IP address used;
Feedback information feeds back in the distribution module of the network address by l, ARP request bag;
M, network address distribution module receive the feedback information of ARP request bag, are control card distributing IP address according to feedback information, and initialization control card network interface eth0.(initialization eth0 network interface is carried out in distribution module IP address that is inquiry is overtime, that do not have the network equipment to take in the network address, obtains legitimate ip address.）
(2) control computer and automatically identify control card.
(1) broadcast search module sends search equipment search packet control card equipment;
(2) search response module receives search equipment bag, and sends search feedback packet response broadcast search module;
(3) broadcast search module receives search feedback packet, and sends acquisition facility information bag;
(4) search response module receives and obtains facility information bag;
(5) search response module transmitting apparatus information feed back bag is on control computer;
(6) control connecting computer receiving unit information feed back bag, from facility information feedback packet, automatically identify control card;
(3) computer connection control card is controlled.
Control card IP address assignment in this preferred embodiment also comprises fixed ip address and distributes and the distribution of DHCP automatic acquisition.
Fixed ip address distribution comprises the following steps:
(1) control card is started;
(2) this fixed ip address is distributed to network interface card eth0 by control card automatically;
(3) network service is carried out by this P address and control computer in control card.
The distribution of DHCP automatic acquisition comprises the following steps:
(1) control card is started;
(2) system cloud gray model on control card carries service udhcpc;
(3) control card coordinates the Dynamic Host Configuration Protocol server in local area network (LAN) to carry out IP address assignment by DHCP procotol;
(4) control card is connected with the identification of control computer.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; technical scheme of the present invention is modified or equivalent replacement, all belong to protection scope of the present invention.
Claims (5)
1. the asynchronous full-color control card of LED, is characterized in that, comprises Rawsocket module, network address distribution module and search response module; Control card is by network connection control computer, and this control computer comprises for sending the broadcast search module of searching for control card equipment in search equipment bag to local area network (LAN) and for sending network address information feedback packet to the network address information respond module on control card;
Described Rawsocket module receives the search equipment bag that broadcast search module sends, and then forges and send the network address information that the inquiry of network address information inquiry packet sends the control computer of this search equipment bag;
Described network address information respond module receives network address information inquiry packet, and concurrent SCN Space Cable Network address information feedback packet is to Rawsocket module; Rawsocket module is forged ARP request bag and is sent in local area network (LAN) the IP address traveling through current local area network subnet section, and inquiry is not by the IP address used;
Described network address distribution module receives the feedback information of ARP request bag, is control card distributing IP address according to feedback information, and initialization control card network interface eth0;
Described broadcast search module sends in search equipment bag to local area network (LAN) and searches for the control card distributing the network address; Search response module receives search equipment bag and sends search feedback packet response broadcast search module; Broadcast search module sends to obtain on facility information bag to control card and obtains control card facility information; After search response resume module obtains facility information bag, transmitting apparatus information feed back bag is on control computer, controls computer and automatically identifies control card.
2. the asynchronous full-color control card of LED knows a method for distinguishing automatically with control computer, it is characterized in that, comprises the following steps:
(1) control card IP address assignment;
(1) non-DHCP automatic acquisition distributes;
A, broadcast search block search card maker;
B, Rawsocket module receives search equipment bag;
C, Rawsocket module extracts from the packet header of search equipment bag the IP controlling computer;
D, Rawsocket module forges network address information inquiry packet;
E, Rawsocket module sends the network address information that the inquiry of network address information inquiry packet sends the control computer of this broadcast search bag;
F, network address information respond module receive network address information inquiry packet;
G, network address information respond module send the inquiry of network address information feedback packet response Rawsocket module;
H, Rawsocket module receives network address information feedback packet; And calculate the network segment of current local area network;
I, Rawsocket module forges ARP request bag;
J, Rawsocket module sends ARP request bag in local area network (LAN);
The IP address of k, ARP request bag traversal current local area network subnet section, and inquiry is not by the IP address used;
Feedback information feeds back in the distribution module of the network address by l, ARP request bag;
M, network address distribution module receive the feedback information of ARP request bag, are control card distributing IP address according to feedback information, and initialization control card network interface eth0;
(2) control computer and automatically identify control card;
(1) broadcast search module sends search equipment search packet control card equipment;
(2) search response module receives search equipment bag, and sends search feedback packet response broadcast search module;
(3) broadcast search module receives search feedback packet, and sends acquisition facility information bag;
(4) search response module receives and obtains facility information bag;
(5) search response module transmitting apparatus information feed back bag is on control computer;
(6) control connecting computer receiving unit information feed back bag, from facility information feedback packet, automatically identify control card;
(3) computer connection control card is controlled.
3. the asynchronous full-color control card of a kind of LED according to claim 2 knows method for distinguishing automatically with control computer, it is characterized in that: described control card IP address assignment also comprises fixed ip address and distributes and the distribution of DHCP automatic acquisition.
4. the asynchronous full-color control card of a kind of LED according to claim 3 knows method for distinguishing automatically with control computer, it is characterized in that: described fixed ip address distribution comprises the following steps:
(1) control card is started;
(2) this fixed ip address is distributed to network interface card eth0 by control card automatically;
(3) network service is carried out by this P address and control computer in control card.
5. the asynchronous full-color control card of a kind of LED according to claim 3 and control computer are from the method be dynamically connected, and it is characterized in that: described DHCP automatic acquisition distribution comprises the following steps:
(1) control card is started;
(2) system cloud gray model on control card carries service udhcpc;
(3) control card coordinates the Dynamic Host Configuration Protocol server in local area network (LAN) to carry out IP address assignment by DHCP procotol;
(4) control card is connected with the identification of control computer.
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Cited By (1)
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| CN105704206A (en) * | 2015-12-31 | 2016-06-22 | 西安诺瓦电子科技有限公司 | Implementation method for performing Ethernet communication with LED display control card |
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Application publication date: 20151118 |