CN102036439A - Automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method - Google Patents
Automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method Download PDFInfo
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Abstract
The invention discloses an automatic equipment identification and maintenance supported DMX512 (Digital Multiplex 512) landscape lighting control system and method. The system consists of a remote control center and a DMX512 control network, wherein the DMX512 control network is downwards compatible with standard DMX512 products occupying the market dominant position; a corresponding slave controller reports equipment identification information when DMX512 equipment is networked for the first time, and a master controller automatically allocates a physical address to the equipment by a physical address allocation algorithm, thus manual operation is avoided; the slave controller prevents from reporting conflicts by adopting a carrier sense and binary exponential backoff algorithm; by virtue of an automatically created equipment list, the master controller detects the status of the equipment regularly, reports the status of the equipment in the DMX512 control network to the remote control center and automatically updates the equipment list; and operating personnel can also manually add new equipment and remove the original equipment as required or modify the physical address of the equipment.
Description
Technical field
The present invention relates to Landscape Lighting control technology field, relate in particular to a kind of support equipment identification and DMX512 Landscape Lighting managing and control system and the method safeguarded automatically based on DMX512.
Background technology
The DMX512 agreement is light modulation and light control console data transmission standard, the international agreement of the universal signal control of light industry digitizer, the DMX512 agreement is simple, reliable with it, flexibility is used widely in the light control field in stage, theater, studio.The prerequisite that DMX512 puts into operation is to intrasystem controlled device allocated physical address, and the conventional method that the equipment physical address is set is a configuration address toggle switch or the special-purpose supporting location device of writing is provided on each equipment.When control channel quantity was various, first kind of method that physical address is set needed the careful layout of Field Force, dials the physical address of establishing the large number quipments passage, and situation such as dial the wrong number easily takes place to leak; Another method is directly the physical address of device channels to be write controlled device by writing the location device, though exempted the loaded down with trivial details of manual dial-up, but the ease for use directly perceived that the address is set is not good enough, and in case device damage takes place at the scene, consumes power during maintenance cost, influences user experience.In addition, the standard DMX512 product of main flow all adopts one-way transmission, and the real time status of equipment can not get effective feedback, is unfavorable for plant maintenance.
Along with the upgrading of dimmer and the continuous expansion of performance scale, developed country steps up the research to more intelligent light control protocol in recent years.The ACN agreement that the North America industry proposes, use the automatic identification technology of a series of maturations: positioning service agreement SLP, device management protocol and DDL agreement DDL, adopt the CID component identifier; The Art-Net agreement that the Europe industry proposes adopts the limited broadcast address to send the ArtPoll protocol package to online all nodes, and each server and node send response packet, and the IP address that server is learnt on-line apparatus by response packet is set up communication, implemented control.Each equipment has from MAC Address and calculates unique IP address.
Still in the realization of interactive operation of equipment plug and play and setting automatically, all carry out discussion separately in developing ACN agreement and Art-Net agreement, exempted the inconvenience that the DMX512 device address is provided with, can learn equipment state simultaneously.Regrettably, the DMX512 product of ACN and the incompatible standard of Art-Net agreement.Up to now, DMX512 is still most widely used agreement in stage, theater, the light control field, studio, and especially at the end of lamp light control system, the leading position of DMX512 control mode is not ccontaining doubts.Therefore, demand developing automatic identification of a kind of support equipment and maintenance urgently, the address is distributed automatically, and the upgrading products of compatibility standard DMX512.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency, a kind of support equipment identification and DMX512 Landscape Lighting managing and control system and the method safeguarded automatically are provided.
The automatic identification of support equipment is netted by TCP/IP and DMX512 control with the long-range management and control center in the DMX512 Landscape Lighting managing and control system of safeguarding and is linked to each other, DMX512 control net comprises a plurality of DMX512 control net, each DMX512 control net comprises main controller module and a plurality of from control device module, the main controller module links to each other from control device module with the 1st to N by the full duplex five-wire system, the main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, the TXD pin respectively with the RO of main transceiver, the DI pin links to each other, the 6th of main transceiver, 5,7,8 pins respectively with the 2nd of main XLR5,3,4,5 pins link to each other, i comprises that from control device module i is from the control device, i transceiver and i XLR5 interface, i is from the RXD of control device, the TXD pin respectively with the RO of i transceiver, the DI pin links to each other, i transceiver the 7th, 8,6,5 pins respectively with i from the 2nd of control device interface XLR5,3,4,5 pins link to each other, the 2nd of each XLR5 interface, 3,4,5 pins are the primary link data1+ of connecting bus respectively, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface links to each other with ground; Link to each other with the receiving terminal/transmitting terminal of main controller from the transmitting terminal/receiving terminal of control device, primary link data1 is used for receiving the information that main controller sends from the control device, adopt any master-slave mode standard DMX512 agreement to multiple spot, secondary link data2 is responsible for reporting and feedback information to main controller from the control device, realizes the self-defined expanded function that the DMX512 agreement is reserved; The equipment list at long-range management and control center and evacuation appliance table are with the storage of excel form, and the management and control software at long-range management and control center adopts Labview G language compilation, can directly call and edit the excel form.
The support equipment automatically method of identification and the DMX512 Landscape Lighting management and control of safeguarding comprises that the automatic identification of equipment and maintenance, equipment detect inquiry automatically, manually interpolation increases newly/evacuation appliance information, manual modification equipment physical address, but while choice criteria DMX512 pattern, adopt toggle switch or write location device write device physical address, compatible fully existing DMX512 product, wherein
1) identification is as follows with the step of safeguarding automatically for equipment:
(1) power on after, from control device judgment device whether physical address is set, if be provided with, then this equipment has inserted DMX512 control net; If be provided with, then be the equipment of the first DMX512 of access control net, the networking indicator light is bright, from control device through secondary link data2 reporting equipment information to main controller.The physical address request data package initial code that sends from the control device is 0x02, the packet data territory comprises equipment identification information, wherein device identification is the device product ID of the ID of equipment producer of 2 bytes, 2 bytes and the device channels number of 1 byte, DMX512 agreement specified devices passage and equipment physical address are followed one-to-one principle, can pass through from the zero clearing of control device pin off-line at this equipment physical address;
(2) receive after the physical address request data package of control device transmission, main controller is according to existing device table and vacant physical address table, go out initial physical address and physical address number behind the equipment networking by the physical address assignments algorithm computation, and corresponding modify equipment list and vacant physical address table, main controller transmitter start code (TSC) in primary link data1 is the physical address assignments packet of 0x04, the packet data territory comprises equipment identification information, the initial physical address of equipment that distributes, or transmitter start code (TSC) is the not enough packet of address assignment of 0x03, and the packet data territory is 0x00; Wherein the equipment list of main controller comprises the initial physical address of equipment serial number, device identification, equipment of identification equipment, and the vacant physical address table of main controller comprises vacant section sequence number, vacant section initial physical address and vacant section physical address number;
(3) if receive the physical address assignments packet, the corresponding physical address of preserving, be provided with each channel allocation from the control device, the networking indicator light goes out, and is the physical address assignments reply data bag of 0x05 to main controller feedback initial code, and the packet data territory comprises the initial physical address of the equipment of distribution; If it is receive the not enough packet of address assignment, corresponding from the flicker of control device networking indicator light;
(4) receive physical address assignments reply data bag after, main controller is the newly added equipment packet of 0x02 to long-range management and control center transmitter start code (TSC), the packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive the newly added equipment packet after, long-range management and control center adds newly added equipment information the equipment list at management and control center;
If send and do not receive behind the physics Address requests packet 0.3s and reply, equipment sends the physical address request data package once more; If do not receive yet in the 1s and reply, the indicator light of then networking flicker, indication fault returns step 1) after fixing a breakdown;
2) to detect the step of inquiry automatically as follows for equipment:
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported long-range management and control center, and according to existing device table and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected inquiry automatically;
(6) main controller transmitter start code (TSC) in primary link data1 is the status poll packet of 0x08, and the packet data territory is by the initial physical address of inquiry equipment;
(7) receive the status poll packet after, corresponding to control device checkout facility state, if equipment state is normal, corresponding is the state normal data packet of 0x09 from control device transmitter start code (TSC), the packet data territory is by the initial physical address of inquiry equipment; If unit exception, corresponding is the abnormal state packet of 0x0a from control device transmitter start code (TSC), and the packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8) receive that equipment state is replied after, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is unusual, the main controller transmitter start code (TSC) be the equipment state abnormal data bag of 0x07 to long-range management and control center, and carry out next device status inquiries;
(9) if do not receive behind the 0.3s corresponding to the replying of control device, main controller in primary link data1 for the second time transmitter start code (TSC) be the status poll packet of 0x08, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) receive that equipment state is replied after, main controller execution in step 8); If do not receive yet behind the 0.3s by inquiry equipment from the replying of control device, main controller in primary link data1 for the third time transmitter start code (TSC) be the status poll packet of 0x07, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive equipment state reply data bag after, main controller execution in step 8); If receive yet behind the 0.3s and ask replying of device controller, main controller is that the equipment of 0x04 is withdrawn request data package to long-range management and control center transmitter start code (TSC), and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn the request data package data field for being ask equipment identification information;
(12) receive that equipment is withdrawn request data package after, long-range management and control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information slave unit table of evacuation appliance is moved to the evacuation appliance table, and be that the equipment of 0x05 is withdrawn the reply data bag to the main controller transmitter start code (TSC) of correspondence, the packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, then show unit exception, the main controller transmitter start code (TSC) of mind-set correspondence is that the equipment of 0x05 is withdrawn the reply data bag in the long-range management and control, and the packet data territory is evacuation appliance identification information and 0x02;
(13) receive that equipment is withdrawn the reply data bag after, if equipment withdraws, main controller is revised the corresponding information of equipment list and vacant physical address table; If equipment is not withdrawn, then main controller is not handled this facility information;
If in the main controller equipment list all devices inquiry finish and state normal, the main controller transmitter start code (TSC) be the system mode normal data packet of 0x06 to long-range management and control center, the packet data territory is 0x00;
3) it is as follows manually to add the step of newly added equipment:
Operating personnel are on LABVIEW " newly added equipment " interface, fill in " newly added equipment place DMX512 control net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", after clicking the transmission button, the information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is the newly added equipment packet of 0x08, and the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; After receiving the newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and be the physical address assignments packet of 0x03 by primary link data1 transmitter start code (TSC), the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to the equipment that does not possess information feedback function;
4) step of manual modification equipment physical address is as follows:
Operating personnel are on LABVIEW " apparatus modifications " interface, fill in " equipment place DMX512 control net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after the apparatus modifications ", after clicking the transmission button, the modification information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is that the equipment physical address of 0x0a is revised packet, and the packet data territory is the initial physical address after original initial physical address of equipment identification information, equipment and the apparatus modifications; After receiving that the equipment physical address is revised packet, corresponding main controller is revised relevant device information in the equipment list, and by the primary link transmitter start code (TSC) be the equipment physical address of 0x0b revise packet to corresponding from the control device.
Described physical address assignments algorithm is:
Main controller calculates all vacant section total physical address number in the vacant physical address table, if vacant section total physical address number is less than T, main controller is the not enough packet of address assignment of 0x03 by primary link data1 transmitter start code (TSC), this DMX512 control net physical address deficiency of notice request equipment;
If vacant section total physical address number is more than or equal to T, and vacant section number is smaller or equal to 1 in the vacant physical address table, the equipment list physical address in the main controller is continuous, and the initial physical address of distributing to requesting service is
S
0＝0
Wherein, i is an equipment serial number in the main controller equipment list;
L is an equipment serial number last in the main controller equipment list;
S
iFor sequence number in the main controller equipment list is the device channels number of i;
Perhaps vacant section total physical address number is more than or equal to T, and vacant section number is greater than 1 in the vacant physical address table, DMX512 control net has equipment to withdraw, and the equipment list physical address is discontinuous in the main controller, and each vacant section physical address in the number of channels T of requesting service and the vacant physical address table is counted N
iRelatively, select to satisfy vacant section of following condition the requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physics address setting of requesting service is selected vacant section first address;
If there be not vacant section that satisfies above-mentioned condition in the vacant physical address table, for the requesting service physical address being provided and guaranteeing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation technology reconstructing apparatus table, newly-built equipment list physical address is continuous, and it is corresponding one by one with original equipment table device channels physical address, the initial physical address that requesting service distributes follows the maximum physical address of existing equipment in the newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and according to the initial physics address size of equipment in the newly-built equipment list one by one transmitter start code (TSC) be that the physical address of 0x06 is reseted packet, the packet data territory comprises equipment identification information, the initial physical address of device reset; After receiving that physical address is reseted packet, corresponding think highly of from control the equipment physical address newly is set, and transmitter start code (TSC) is that the physical address of 0x07 is reseted the reply data bag, the packet data territory is the initial physical address of device reset; After receiving that physical address is reseted the reply data bag, main controller carries out next equipment physical address to be reseted, and resets until all existing equipment physical addresss and finishes; Main controller send the physical address assignments packet to requesting service from the control device; Receive that requesting service is behind the physical address assignments reply data bag of control device transmission, main controller deletion existing equipment table, revise vacant physical address table, and be the equipment list upgrading data packet of 0x03 to long-range management and control center transmitter start code (TSC), the packet data territory comprises all devices information in the newly-built equipment list; Long-range management and control center covers the existing equipment table with the equipment list upgrading data packet of receiving.
Describedly before sending packet, secondary link data2 bus is carried out carrier sense from the control device, when bus is busy, continue bus state inquiry after waiting for 0.1ms, bus for reducing erroneous judgement, still then sends data for the free time as if the testbus state behind the time-delay 10us during free time; When data send, send a message, whether data query is sent completely, and then finishes to send if data have been sent completely, if be not sent completely as yet, then read bus state indication pin status, if find that bus is occupied, promptly send data and bump, stop to send, and adopt binary exponential backoff algorithm to implement to wait for, send data after the free time once more until bus; State was a high level when bus was idle, and state was a low level when bus was busy.The transmission of major and minor link data bag still adopt the low level break that before initial code, comprises 88us at least of standard DMX512 regulation and at least the high level of 8us as the packet beginning flag;
Detect conflict in the equipment transmission data process, equipment will adopt the index avoidance method of rise time, avoid conflicting once more.Retransmitting back off time can be got by following formula:
T＝R×t
R＝radom[0，1，2，……，(2
k-1)]
k＝min(s，10)
Wherein, T is for retransmitting back off time;
T is basic back off time, i.e. a contention-free period time;
K is a number of retransmissions;
Being calculated as follows of contention time:
Maximum data packet is the physical address request data package on the secondary link, is made up of the initial code of 1 byte, the equipment identification information of 5 bytes; Sending physical address request data package maximum duration is 88us+8us+4us*6=120us, consider time delay of data transmission and at interval, getting basic back off time t is 0.1ms, when number of retransmissions reaches 16 times when still unsuccessful, equipment is thought this bust this, carries out bus state again and judges.
The present invention adopts long-range management and control center to combine with DMX512 control net, and DMX512 control mesh portions need not to transform, and backward compatible standard DMX512 product makes full use of existing resource; Reporting equipment identification information behind the DMX512 equipment networking, main controller adopts the physical address assignments algorithm, distributes DMX512 equipment physical address automatically, exempts manual operation; DMX512 equipment adopts carrier sense and binary system back off algorithm to prevent to report conflict; By the equipment list of automatic foundation, main controller can regularly detect equipment state, and the real-time report status of equipment is to long-range management and control center, and automatic updating maintenance equipment list; Operating personnel also can manually add, revise the equipment physical address as required, realize that hand combines automatically.
Description of drawings
Fig. 1 is support equipment identification and the DMX512 Landscape Lighting managing and control system figure that safeguards automatically;
Fig. 2 is the automatic identification process figure of DMX512 equipment;
Fig. 3 is a DMX512 equipment sending data flow chart;
Fig. 4 is a management and control central apparatus situation displayed map;
Fig. 5 manually adds the newly added equipment surface chart;
Fig. 6 is a manual modification equipment physical address surface chart.
Embodiment
As shown in Figure 1, long-range management and control center links to each other with DMX512 control net by TCP/IP, DMX512 control net comprises a plurality of DMX512 control net, each DMX512 control net comprises main controller module and a plurality of from control device module, the main controller module links to each other from control device module with the 1st to N by the full duplex five-wire system, the main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, the TXD pin respectively with the RO of main transceiver, the DI pin links to each other, the 6th of main transceiver, 5,7,8 pins respectively with the 2nd of main XLR5,3,4,5 pins link to each other, i comprises that from control device module i is from the control device, i transceiver and i XLR5 interface, i is from the RXD of control device, the TXD pin respectively with the RO of i transceiver, the DI pin links to each other, i transceiver the 7th, 8,6,5 pins respectively with i from the 2nd of control device interface XLR5,3,4,5 pins link to each other, the 2nd of each XLR5 interface, 3,4,5 pins are the primary link data1+ of connecting bus respectively, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface links to each other with ground;
Link to each other with the receiving terminal/transmitting terminal of main controller from the transmitting terminal/receiving terminal of control device, primary link data1 is used for receiving the information that main controller sends from the control device, adopt any master-slave mode standard DMX512 agreement to multiple spot, secondary link data2 is responsible for reporting and feedback information to main controller from the control device, realizes the self-defined expanded function that the DMX512 agreement is reserved; The equipment list at long-range management and control center and evacuation appliance table are with the storage of excel form, and the management and control software at long-range management and control center adopts Labview G language compilation, can directly call and edit the excel form.
The automatic identification process figure of DMX512 equipment as shown in Figure 2, it is as follows that DMX512 equipment is discerned detailed process automatically:
(1) power on after, from control device judgment device whether physical address is set, if be provided with, then this equipment has inserted DMX512 control net; If be provided with, then be the equipment of the first DMX512 of access control net, the networking indicator light is bright, from control device through secondary link data2 reporting equipment information to main controller.The physical address request data package initial code that sends from the control device is 0x02, the packet data territory comprises equipment identification information, wherein device identification is the device product ID of the ID of equipment producer of 2 bytes, 2 bytes and the device channels number of 1 byte, DMX512 agreement specified devices passage and equipment physical address are followed one-to-one principle, can pass through from the zero clearing of control device pin off-line at this equipment physical address;
(2) receive after the physical address request data package of control device transmission, main controller is according to existing device table and vacant physical address table, go out initial physical address and physical address number behind the equipment networking by the physical address assignments algorithm computation, and corresponding modify equipment list and vacant physical address table, main controller transmitter start code (TSC) in primary link data1 is the physical address assignments packet of 0x04, the packet data territory comprises equipment identification information, the initial physical address of equipment that distributes, or transmitter start code (TSC) is the not enough packet of address assignment of 0x03, and the packet data territory is 0x00; Wherein the equipment list of main controller comprises the initial physical address of equipment serial number, device identification, equipment of identification equipment, and the vacant physical address table of main controller comprises vacant section sequence number, vacant section initial physical address and vacant section physical address number;
(3) if receive the physical address assignments packet, the corresponding physical address of preserving, be provided with each channel allocation from the control device, the networking indicator light goes out, and is the physical address assignments reply data bag of 0x05 to main controller feedback initial code, and the packet data territory comprises the initial physical address of the equipment of distribution; If it is receive the not enough packet of address assignment, corresponding from the flicker of control device networking indicator light;
(4) receive physical address assignments reply data bag after, main controller is the newly added equipment packet of 0x02 to long-range management and control center transmitter start code (TSC), the packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive the newly added equipment packet after, long-range management and control center adds newly added equipment information the equipment list at management and control center;
If send and do not receive behind the physics Address requests packet 0.3s and reply, equipment sends the physical address request data package once more; If do not receive yet in the 1s and reply, the indicator light of then networking flicker, indication fault returns step 1) after fixing a breakdown;
As shown in table 1, the equipment list of main controller comprises the initial physical address of equipment serial number, device identification, equipment of identification equipment; As shown in table 2, the vacant physical address table of main controller comprises vacant section sequence number, vacant section initial physical address and vacant section physical address number.
Table 1
Table 2
The physical address assignments algorithm comprises following content:
Main controller calculates all vacant section total physical address number in the vacant physical address table, if vacant section total physical address number is less than T, main controller is the not enough packet of address assignment of 0x03 by primary link data1 transmitter start code (TSC), this DMX512 control net physical address deficiency of notice request equipment;
If vacant section total physical address number is more than or equal to T, and vacant section number is smaller or equal to 1 in the vacant physical address table, the equipment list physical address in the main controller is continuous, and the initial physical address of distributing to requesting service is
S
0＝0
Wherein, i is an equipment serial number in the main controller equipment list;
L is an equipment serial number last in the main controller equipment list;
S
iFor sequence number in the main controller equipment list is the device channels number of i;
Perhaps vacant section total physical address number is more than or equal to T, and vacant section number is greater than 1 in the vacant physical address table, DMX512 control net has equipment to withdraw, and the equipment list physical address is discontinuous in the main controller, and each vacant section physical address in the number of channels T of requesting service and the vacant physical address table is counted N
iRelatively, select to satisfy vacant section of following condition the requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physics address setting of requesting service is selected vacant section first address;
If there be not vacant section that satisfies above-mentioned condition in the vacant physical address table, for the requesting service physical address being provided and guaranteeing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation technology reconstructing apparatus table, newly-built equipment list physical address is continuous, and it is corresponding one by one with original equipment table device channels physical address, the initial physical address that requesting service distributes follows the maximum physical address of existing equipment in the newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and according to the initial physics address size of equipment in the newly-built equipment list one by one transmitter start code (TSC) be that the physical address of 0x06 is reseted packet, the packet data territory comprises equipment identification information, the initial physical address of device reset; After receiving that physical address is reseted packet, corresponding think highly of from control the equipment physical address newly is set, and transmitter start code (TSC) is that the physical address of 0x07 is reseted the reply data bag, the packet data territory is the initial physical address of device reset; After receiving that physical address is reseted the reply data bag, main controller carries out next equipment physical address to be reseted, and resets until all existing equipment physical addresss and finishes; Main controller send the physical address assignments packet to requesting service from the control device; Receive that requesting service is behind the physical address assignments reply data bag of control device transmission, main controller deletion existing equipment table, revise vacant physical address table, and be the equipment list upgrading data packet of 0x03 to long-range management and control center transmitter start code (TSC), the packet data territory comprises all devices information in the newly-built equipment list; Long-range management and control center covers the existing equipment table with the equipment list upgrading data packet of receiving.
DMX512 equipment sending data flow chart as shown in Figure 3, before sending packet, secondary link data2 bus is carried out carrier sense from the control device, when bus is busy, continue bus state inquiry after waiting for 0.1ms, bus for reducing erroneous judgement, still then sends data for the free time as if the testbus state behind the time-delay 10us during free time; When data send, send a message, whether data query is sent completely, and then finishes to send if data have been sent completely, if be not sent completely as yet, then read bus state indication pin status, if find that bus is occupied, promptly send data and bump, stop to send, and adopt binary exponential backoff algorithm to implement to wait for, send data after the free time once more until bus; State was a high level when bus was idle, and state was a low level when bus was busy.The transmission of major and minor link data bag still adopt the low level break that before initial code, comprises 88us at least of standard DMX512 regulation and at least the high level of 8us as the packet beginning flag;
Detect conflict in the equipment transmission data process, equipment will adopt the index avoidance method of rise time, avoid conflicting once more.Retransmitting back off time can be got by following formula:
T＝R×t
R＝radom[0，1，2，……，(2
k-1)]
k＝min(s，10)
Wherein, T is for retransmitting back off time;
T is basic back off time, i.e. a contention-free period time;
K is a number of retransmissions;
Being calculated as follows of contention time:
Maximum data packet is the physical address request data package on the secondary link, is made up of the initial code of 1 byte, the equipment identification information of 5 bytes; Sending physical address request data package maximum duration is 88us+8us+4us*6=120us, consider time delay of data transmission and at interval, getting basic back off time t is 0.1ms, when number of retransmissions reaches 16 times when still unsuccessful, equipment is thought this bust this, carries out bus state again and judges.
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported long-range management and control center, and according to existing device table and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected inquiry automatically;
(6) main controller transmitter start code (TSC) in primary link data1 is the status poll packet of 0x08, and the packet data territory is by the initial physical address of inquiry equipment;
(7) receive the status poll packet after, corresponding to control device checkout facility state, if equipment state is normal, corresponding is the state normal data packet of 0x09 from control device transmitter start code (TSC), the packet data territory is by the initial physical address of inquiry equipment; If unit exception, corresponding is the abnormal state packet of 0x0a from control device transmitter start code (TSC), and the packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8) receive that equipment state is replied after, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is unusual, the main controller transmitter start code (TSC) be the equipment state abnormal data bag of 0x07 to long-range management and control center, and carry out next device status inquiries;
(9) if do not receive behind the 0.3s corresponding to the replying of control device, main controller in primary link data1 for the second time transmitter start code (TSC) be the status poll packet of 0x08, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) receive that equipment state is replied after, main controller execution in step 8); If do not receive yet behind the 0.3s by inquiry equipment from the replying of control device, main controller in primary link data1 for the third time transmitter start code (TSC) be the status poll packet of 0x07, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive equipment state reply data bag after, main controller execution in step 8); If receive yet behind the 0.3s and ask replying of device controller, main controller is that the equipment of 0x04 is withdrawn request data package to long-range management and control center transmitter start code (TSC), and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn the request data package data field for being ask equipment identification information;
(12) receive that equipment is withdrawn request data package after, long-range management and control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information slave unit table of evacuation appliance is moved to the evacuation appliance table, and be that the equipment of 0x05 is withdrawn the reply data bag to the main controller transmitter start code (TSC) of correspondence, the packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, then show unit exception, the main controller transmitter start code (TSC) of mind-set correspondence is that the equipment of 0x05 is withdrawn the reply data bag in the long-range management and control, and the packet data territory is evacuation appliance identification information and 0x02;
(13) receive that equipment is withdrawn the reply data bag after, if equipment withdraws, main controller is revised the corresponding information of equipment list and vacant physical address table; If equipment is not withdrawn, then main controller is not handled this facility information;
If in the main controller equipment list all devices inquiry finish and state normal, the main controller transmitter start code (TSC) be the system mode normal data packet of 0x06 to long-range management and control center, the packet data territory is 0x00.
As shown in Figure 4, main controller equipment state testing result is back to long-range management and control center, if DMX512 control net equipment state is normal, the corresponding DMX512 control in " status of equipment " interface net state indicator light is bright; If main controller detects unit exception, Returning equipment abnormal state packet, then unusual facility information is presented at corresponding DMX512 control net " unusual equipment " zone, the corresponding state indicator light goes out, the equipment for the treatment of recovers normal, click this status indicator lamp, bright and " unusual equipment " the regional zero clearing of status indicator lamp; If management and control center P C receives equipment and withdraws request data package, the flicker of corresponding DMX512 control net state indicator light, withdraw requesting service information and be presented at corresponding DMX512 control net " unusual equipment " zone, treat that operating personnel further confirm this equipment state, if equipment is withdrawn, only need to click corresponding " equipment is withdrawn " button, status indicator lamp is bright, management and control center transmitting apparatus is withdrawn the reply data bag to corresponding main controller, and adding evacuation appliance information automatically to the evacuation appliance table, operating personnel open equipment list the evacuation appliance information deletion are got final product; If equipment is not withdrawn, then status indicator lamp goes out, and shows unit exception, and management and control center transmitting apparatus is withdrawn the reply data bag to corresponding main controller, and need the staff that equipment is overhauled this moment.
Operating personnel can manually add newly-increased, evacuation appliance information at long-range management and control center, be applicable to the equipment that does not possess information feedback function, also manual modification equipment physical address as required, but while choice criteria DMX512 pattern, adopt toggle switch or write location device write device physical address, compatible fully existing DMX512 product.
Manually add newly added equipment information as shown in Figure 5, operating personnel are on LABVIEW " newly added equipment " interface, fill in " newly added equipment place DMX512 control net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", after clicking the transmission button, the information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is the newly added equipment packet of 0x08, and the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; After receiving the newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and be the physical address assignments packet of 0x03 by primary link data1 transmitter start code (TSC), the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to the equipment that does not possess information feedback function.
Manual modification node device physical address as shown in Figure 6, operating personnel are on LABVIEW " apparatus modifications " interface, fill in " equipment place DMX512 control net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after the apparatus modifications ", after clicking the transmission button, the modification information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is that the equipment physical address of 0x0a is revised packet, and the packet data territory is an equipment identification information, initial physical address after original initial physical address of equipment and the apparatus modifications; After receiving that the equipment physical address is revised packet, corresponding main controller is revised relevant device information in the equipment list, and by the primary link transmitter start code (TSC) be the equipment physical address of 0x0b revise packet to corresponding from the control device.
Attached:
Table 5-main controller-from control device packet start code;
The long-range management and control of table 6-center-main controller packet start code.
Table 5
| 0x00 | Main controller sends data (physical address addressing) |
| 0x01 | Main controller sends data (logical groups addressing of address) |
| 0x02 | From control device request physical address |
| 0x03 | The main controller Notify Address distributes not enough |
| 0x04 | The main controller allocated physical address |
| 0x05 | Reply physical address assignments from the control device |
| 0x06 | Main controller is reseted physical address |
| 0x07 | Reply and reset physical address from the control device |
| 0x08 | Main controller query facility state |
| 0x09 | Normal from control device feedback states |
| 0x0a | Unusual from control device feedback states |
| 0x0b | Main controller sends modification equipment physical address information |
Table 6
| 0x00 | PC sends data |
| 0x01 | PC sends data (logical groups addressing of address) |
| 0x02 | Main controller reports newly added equipment information |
| 0x03 | The upgrading of main controller reporting equipment table |
| 0x04 | The main controller transmitting apparatus is withdrawn request |
| 0x05 | The PC transmitting apparatus is withdrawn and is replied |
| 0x06 | Main controller reporting system state is normal |
| 0x07 | Main controller reporting equipment abnormal state |
| 0x08 | PC sends newly added equipment information |
| 0x09 | PC sends evacuation appliance information |
| 0x0a | PC sends modification equipment physical address information |
Claims (4)
1. support equipment identification and the DMX512 Landscape Lighting managing and control system of safeguarding automatically, it is characterized in that long-range management and control center links to each other with DMX512 control net by TCP/IP, DMX512 control net comprises a plurality of DMX512 control net, each DMX512 control net comprises main controller module and a plurality of from control device module, the main controller module links to each other from control device module with the 1st to N by the full duplex five-wire system, the main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, the TXD pin respectively with the RO of main transceiver, the DI pin links to each other, the 6th of main transceiver, 5,7,8 pins respectively with the 2nd of main XLR5,3,4,5 pins link to each other, i comprises that from control device module i is from the control device, i transceiver and i XLR5 interface, i is from the RXD of control device, the TXD pin respectively with the RO of i transceiver, the DI pin links to each other, i transceiver the 7th, 8,6,5 pins respectively with i from the 2nd of control device interface XLR5,3,4,5 pins link to each other, the 2nd of each XLR5 interface, 3,4,5 pins are the primary link data1+ of connecting bus respectively, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface links to each other with ground;
Link to each other with the receiving terminal/transmitting terminal of main controller from the transmitting terminal/receiving terminal of control device, primary link data1 is used for receiving the information that main controller sends from the control device, adopt any master-slave mode standard DMX512 agreement to multiple spot, secondary link data2 is responsible for reporting and feedback information to main controller from the control device, realizes the self-defined expanded function that the DMX512 agreement is reserved; The equipment list at long-range management and control center and evacuation appliance table are with the storage of excel form, and the management and control software at long-range management and control center adopts Labview G language compilation, can directly call and edit the excel form.
2. one kind is used the method for the automatic DMX512 Landscape Lighting management and control of discerning and safeguarding of support equipment according to claim 1, it is characterized in that comprising that automatic identification of equipment and maintenance, equipment detect inquiry, manual newly-increased/evacuation appliance information, the manual modification equipment physical address of adding automatically, but while choice criteria DMX512 pattern, adopt toggle switch or write location device write device physical address, compatible fully existing DMX512 product, wherein
1) identification is as follows with the step of safeguarding automatically for equipment:
(1) power on after, from control device judgment device whether physical address is set, if be provided with, then this equipment has inserted DMX512 control net; If be provided with, then be the equipment of the first DMX512 of access control net, the networking indicator light is bright, from control device through secondary link data2 reporting equipment information to main controller.The physical address request data package initial code that sends from the control device is 0x02, the packet data territory comprises equipment identification information, wherein device identification is the device product ID of the ID of equipment producer of 2 bytes, 2 bytes and the device channels number of 1 byte, DMX512 agreement specified devices passage and equipment physical address are followed one-to-one principle, can pass through from the zero clearing of control device pin off-line at this equipment physical address;
(2) receive after the physical address request data package of control device transmission, main controller is according to existing device table and vacant physical address table, go out initial physical address and physical address number behind the equipment networking by the physical address assignments algorithm computation, and corresponding modify equipment list and vacant physical address table, main controller transmitter start code (TSC) in primary link data1 is the physical address assignments packet of 0x04, the packet data territory comprises equipment identification information, the initial physical address of equipment that distributes, or transmitter start code (TSC) is the not enough packet of address assignment of 0x03, and the packet data territory is 0x00; Wherein the equipment list of main controller comprises the initial physical address of equipment serial number, device identification, equipment of identification equipment, and the vacant physical address table of main controller comprises vacant section sequence number, vacant section initial physical address and vacant section physical address number;
(3) if receive the physical address assignments packet, the corresponding physical address of preserving, be provided with each channel allocation from the control device, the networking indicator light goes out, and is the physical address assignments reply data bag of 0x05 to main controller feedback initial code, and the packet data territory comprises the initial physical address of the equipment of distribution; If it is receive the not enough packet of address assignment, corresponding from the flicker of control device networking indicator light;
(4) receive physical address assignments reply data bag after, main controller is the newly added equipment packet of 0x02 to long-range management and control center transmitter start code (TSC), the packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive the newly added equipment packet after, long-range management and control center adds newly added equipment information the equipment list at management and control center;
If send and do not receive behind the physics Address requests packet 0.3s and reply, equipment sends the physical address request data package once more; If do not receive yet in the 1s and reply, the indicator light of then networking flicker, indication fault returns step 1) after fixing a breakdown;
2) to detect the step of inquiry automatically as follows for equipment:
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported long-range management and control center, and according to existing device table and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected inquiry automatically;
(6) main controller transmitter start code (TSC) in primary link data1 is the status poll packet of 0x08, and the packet data territory is by the initial physical address of inquiry equipment;
(7) receive the status poll packet after, corresponding to control device checkout facility state, if equipment state is normal, corresponding is the state normal data packet of 0x09 from control device transmitter start code (TSC), the packet data territory is by the initial physical address of inquiry equipment; If unit exception, corresponding is the abnormal state packet of 0x0a from control device transmitter start code (TSC), and the packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8) receive that equipment state is replied after, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is unusual, the main controller transmitter start code (TSC) be the equipment state abnormal data bag of 0x07 to long-range management and control center, and carry out next device status inquiries;
(9) if do not receive behind the 0.3s corresponding to the replying of control device, main controller in primary link data1 for the second time transmitter start code (TSC) be the status poll packet of 0x08, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) receive that equipment state is replied after, main controller execution in step 8); If do not receive yet behind the 0.3s by inquiry equipment from the replying of control device, main controller in primary link data1 for the third time transmitter start code (TSC) be the status poll packet of 0x07, the packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive equipment state reply data bag after, main controller execution in step 8); If receive yet behind the 0.3s and ask replying of device controller, main controller is that the equipment of 0x04 is withdrawn request data package to long-range management and control center transmitter start code (TSC), and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn the request data package data field for being ask equipment identification information;
(12) receive that equipment is withdrawn request data package after, long-range management and control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information slave unit table of evacuation appliance is moved to the evacuation appliance table, and be that the equipment of 0x05 is withdrawn the reply data bag to the main controller transmitter start code (TSC) of correspondence, the packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, then show unit exception, the main controller transmitter start code (TSC) of mind-set correspondence is that the equipment of 0x05 is withdrawn the reply data bag in the long-range management and control, and the packet data territory is evacuation appliance identification information and 0x02;
(13) receive that equipment is withdrawn the reply data bag after, if equipment withdraws, main controller is revised the corresponding information of equipment list and vacant physical address table; If equipment is not withdrawn, then main controller is not handled this facility information;
If in the main controller equipment list all devices inquiry finish and state normal, the main controller transmitter start code (TSC) be the system mode normal data packet of 0x06 to long-range management and control center, the packet data territory is 0x00;
3) it is as follows manually to add the step of newly added equipment:
Operating personnel are on LABVIEW " newly added equipment " interface, fill in " newly added equipment place DMX512 control net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", after clicking the transmission button, the information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is the newly added equipment packet of 0x08, and the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; After receiving the newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and be the physical address assignments packet of 0x03 by primary link data1 transmitter start code (TSC), the packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to the equipment that does not possess information feedback function;
4) step of manual modification equipment physical address is as follows:
Operating personnel are on LABVIEW " apparatus modifications " interface, fill in " equipment place DMX512 control net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after the apparatus modifications ", after clicking the transmission button, the modification information that the automatic preservation in long-range management and control center is filled in is to equipment list, and transmitter start code (TSC) is that the equipment physical address of 0x0a is revised packet, and the packet data territory is the initial physical address after original initial physical address of equipment identification information, equipment and the apparatus modifications; After receiving that the equipment physical address is revised packet, corresponding main controller is revised relevant device information in the equipment list, and by the primary link transmitter start code (TSC) be the equipment physical address of 0x0b revise packet to corresponding from the control device.
3. a kind of support equipment according to claim 2 is discerned the method with the DMX512 Landscape Lighting management and control of safeguarding automatically, it is characterized in that described physical address assignments algorithm is:
Main controller calculates all vacant section total physical address number in the vacant physical address table, if vacant section total physical address number is less than T, main controller is the not enough packet of address assignment of 0x03 by primary link data1 transmitter start code (TSC), this DMX512 control net physical address deficiency of notice request equipment;
If vacant section total physical address number is more than or equal to T, and vacant section number is smaller or equal to 1 in the vacant physical address table, the equipment list physical address in the main controller is continuous, and the initial physical address of distributing to requesting service is
S
0＝0
Wherein, i is an equipment serial number in the main controller equipment list;
L is an equipment serial number last in the main controller equipment list;
S
iFor sequence number in the main controller equipment list is the device channels number of i;
Perhaps vacant section total physical address number is more than or equal to T, and vacant section number is greater than 1 in the vacant physical address table, DMX512 control net has equipment to withdraw, and the equipment list physical address is discontinuous in the main controller, and each vacant section physical address in the number of channels T of requesting service and the vacant physical address table is counted N
iRelatively, select to satisfy vacant section of following condition the requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physics address setting of requesting service is selected vacant section first address;
If there be not vacant section that satisfies above-mentioned condition in the vacant physical address table, for the requesting service physical address being provided and guaranteeing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation technology reconstructing apparatus table, newly-built equipment list physical address is continuous, and it is corresponding one by one with original equipment table device channels physical address, the initial physical address that requesting service distributes follows the maximum physical address of existing equipment in the newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and according to the initial physics address size of equipment in the newly-built equipment list one by one transmitter start code (TSC) be that the physical address of 0x06 is reseted packet, the packet data territory comprises equipment identification information, the initial physical address of device reset; After receiving that physical address is reseted packet, corresponding think highly of from control the equipment physical address newly is set, and transmitter start code (TSC) is that the physical address of 0x07 is reseted the reply data bag, the packet data territory is the initial physical address of device reset; After receiving that physical address is reseted the reply data bag, main controller carries out next equipment physical address to be reseted, and resets until all existing equipment physical addresss and finishes; Main controller send the physical address assignments packet to requesting service from the control device; Receive that requesting service is behind the physical address assignments reply data bag of control device transmission, main controller deletion existing equipment table, revise vacant physical address table, and be the equipment list upgrading data packet of 0x03 to long-range management and control center transmitter start code (TSC), the packet data territory comprises all devices information in the newly-built equipment list; Long-range management and control center covers the existing equipment table with the equipment list upgrading data packet of receiving.
4. a kind of support equipment according to claim 2 is discerned the method with the DMX512 Landscape Lighting management and control of safeguarding automatically, it is characterized in that describedly before sending packet, secondary link data2 bus being carried out carrier sense from the control device, when bus is busy, continue bus state inquiry after waiting for 0.1ms, bus for reducing erroneous judgement, still then sends data for the free time as if the testbus state behind the time-delay 10us during free time; When data send, send a message, whether data query is sent completely, and then finishes to send if data have been sent completely, if be not sent completely as yet, then read bus state indication pin status, if find that bus is occupied, promptly send data and bump, stop to send, and adopt binary exponential backoff algorithm to implement to wait for, send data after the free time once more until bus; State was a high level when bus was idle, and state was a low level when bus was busy.The transmission of major and minor link data bag still adopt the low level break that before initial code, comprises 88us at least of standard DMX512 regulation and at least the high level of 8us as the packet beginning flag;
Detect conflict in the equipment transmission data process, equipment will adopt the index avoidance method of rise time, avoid conflicting once more.Retransmitting back off time can be got by following formula:
T＝R×t
R＝radom[0，1，2，……，(2
k-1)]
k＝min(s，10)
Wherein, T is for retransmitting back off time;
T is basic back off time, i.e. a contention-free period time;
K is a number of retransmissions;
Being calculated as follows of contention time:
Maximum data packet is the physical address request data package on the secondary link, is made up of the initial code of 1 byte, the equipment identification information of 5 bytes; Sending physical address request data package maximum duration is 88us+8us+4us*6=120us, consider time delay of data transmission and at interval, getting basic back off time t is 0.1ms, when number of retransmissions reaches 16 times when still unsuccessful, equipment is thought this bust this, carries out bus state again and judges.
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| CN102347878A (en) * | 2011-09-30 | 2012-02-08 | 深圳市豪恩安全科技有限公司 | Multi-point communication system, method and equipment |
| CN103179752A (en) * | 2013-03-07 | 2013-06-26 | 杨彤 | On-scene communication method and on-scene communication system for streetlamps |
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| CN105792424A (en) * | 2016-04-13 | 2016-07-20 | 大连工业大学 | Controller based on DMX512 protocol |
| CN106131085A (en) * | 2016-08-31 | 2016-11-16 | 江苏蓝创智能科技股份有限公司 | The communication means of remote intelligent control system |
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