CN102036439B - 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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- CN102036439B CN102036439B CN201010288685.6A CN201010288685A CN102036439B CN 102036439 B CN102036439 B CN 102036439B CN 201010288685 A CN201010288685 A CN 201010288685A CN 102036439 B CN102036439 B CN 102036439B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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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 the Landscape Lighting control technology field based on DMX512, relate in particular to the identification and DMX512 Landscape Lighting managing and control system and the method safeguarded automatically of a kind of support equipment.
Background technology
DMX512 agreement is light modulation and light control console data transmission standard, the international agreement of the universal signal control of light industry digitizer, DMX512 agreement is simple, reliable with it, flexibility is used widely in stage, theater, studio light control field.The prerequisite that DMX512 puts into operation is to intrasystem controlled device allocated physical address, and the conventional method that equipment physical address is set is configuration address toggle switch or the special supporting location device of writing is provided on each equipment.In the time that control channel quantity is various, the method that the first arranges physical address needs the careful layout of Field Force, dials the physical address of establishing large number quipments passage, and the situation such as dial the wrong number easily occurs to leak; Another method is directly the physical address of device channels to be write to controlled device by writing location device, although exempted the loaded down with trivial details of manual dial-up, but the ease for use directly perceived that address is set is not good enough, once and the on-the-spot device damage that occurs, maintenance much time power, affect user's 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 North America industry proposes, is used the automatic identification technology of a series of maturations: positioning service agreement SLP, device management protocol and DDL agreement DDL, adopt CID component identifier; The Art-Net agreement that Europe industry proposes adopts limited broadcast address to send ArtPoll protocol package to online all nodes, and each server and node send response packet, and server is learnt the IP address of on-line apparatus by response packet, sets up communication, implements to control.Each equipment has from MAC Address and calculates unique IP address.
Still in the realization of the interactive operation of equipment plug and play and Lookup protocol, all carried out discussion separately in developing ACN agreement and Art-Net agreement, exempted the inconvenience that DMX512 device address arranges, 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, studio light control field, and especially at the end of lamp light control system, the leading position of DMX512 control mode is not accommodating doubts.Therefore, urgently develop the automatic identification of a kind of support equipment and maintenance, address is distributed automatically, and the upgrading products of compatibility standard DMX512.
Summary of the invention
The object of the invention is to overcome prior art deficiency, the identification and DMX512 Landscape Lighting managing and control system and the method safeguarded automatically of a kind of support equipment is provided.
Support equipment automatically identification is connected by TCP/IP and DMX512 control net with the remote-control center in the DMX512 Landscape Lighting managing and control system of safeguarding, DMX512 controls net and comprises that multiple DMX512 control a net, each DMX512 controls a net and comprises main controller module and multiple from control device module, main controller module is connected from control device module with the 1st to N by full duplex five-wire system, and main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, TXD pin respectively with the RO of main transceiver, DI pin is connected, the 6th of main transceiver, 5, 7, 8 pins respectively with the 2nd of main XLR5, 3, 4, 5 pins are connected, and i comprises that from control device module i is from control device, i transceiver and i XLR5 interface, i is from the RXD of control device, TXD pin respectively with the RO of i transceiver, DI pin is connected, i transceiver the 7th, 8, 6, 5 pins respectively with i from the 2nd of control device interface XLR5, 3, 4, 5 pins are connected, the 2nd of each XLR5 interface, 3, 4, 5 pins connect respectively the primary link data1+ of bus, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface is connected to the ground, be connected from the control transmitting terminal/receiving terminal of device and the receiving terminal/transmitting terminal of main controller, primary link data1 is for receiving from control device the information that main controller sends, adopt the master-slave mode standard DMX512 agreement of a point-to-multipoint, secondary link data2 is responsible for reporting and feedback information to main controller from control device, realizes the reserved self-defined expanded function of DMX512 agreement, the equipment list at remote-control center and evacuation appliance table are with the storage of excel form, and the management and control software at remote-control center adopts Labview G language compilation, can directly call and edit excel form.
Support equipment automatically identification comprises that with the method for the DMX512 Landscape Lighting management and control of safeguarding the automatic identification of equipment and maintenance, equipment detect inquiry, manual newly-increased/evacuation appliance information, the manual modification equipment physical address of adding automatically, simultaneously can choice criteria DMX512 pattern, adopt toggle switch or write location device write device physical address, compatible existing DMX512 product completely, wherein
1) identification is as follows with the step of safeguarding automatically for equipment:
(1) after powering on, from control device judgment device, whether physical address is set, if arrange, this equipment has accessed DMX512 and has controlled net; If do not arrange, be the equipment that first access DMX512 controls net, 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 sending from control device is 0x02, packet data territory comprises equipment identification information, wherein device identification is the device product ID of the equipment manufacturer ID 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 the physical address request data package sending from control device, main controller is according to existing equipment list and vacant physical address table, calculate initial physical address and the physical address number after equipment networking by physical address assignments algorithm, and corresponding modify equipment list and vacant physical address table, the physical address assignments packet that main controller transmitter start code (TSC) in primary link data1 is 0x04, packet data territory comprises equipment identification information, the initial physical address of equipment distributing, or the transmitter start code (TSC) not enough packet of address assignment that is 0x03, 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 of sequence number, vacant section of initial physical address and vacant section of physical address number,
(3) if receive physical address assignments packet, the corresponding physical address of preserving, arrange each channel allocation from control device, networking indicator light goes out, and the physical address assignments reply data bag that is 0x05 to main controller feedback initial code, and packet data territory comprises the initial physical address of the equipment of distribution; If receive the not enough packet of address assignment, corresponding to the flicker of control device networking indicator light;
(4) receive after physical address assignments reply data bag, the newly added equipment packet that main controller is 0x02 to remote-control center transmitter start code (TSC), packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive after newly added equipment packet, remote-control center adds newly added equipment information the equipment list at management and control center;
Do not receive and reply if send after physics Address requests packet 0.3s, equipment sends physical address request data package again; If receive and reply not yet in 1s, the indicator light of networking flicker, indication fault, returns to step 1 after fixing a breakdown);
2) automatically to detect the step of inquiry as follows for equipment:
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported to remote-control center, and according to existing equipment list and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected to inquiry automatically;
(6) the status poll packet that main controller transmitter start code (TSC) in primary link data1 is 0x08, packet data territory is by the initial physical address of inquiry equipment;
(7) receive after status poll packet, corresponding to control device checkout facility state, if equipment state is normal, the corresponding state normal data packet that is 0x09 from control device transmitter start code (TSC), packet data territory is by the initial physical address of inquiry equipment; If unit exception, the corresponding abnormal state packet that is 0x0a from control device transmitter start code (TSC), packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8), after receiving that equipment state is replied, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is abnormal, the equipment state abnormal data bag that main controller transmitter start code (TSC) is 0x07 is to remote-control center, and carries out next device status inquiries;
(9) if do not receive after 0.3s, correspondence is from controlling replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x08 for the second time in primary link data1, and packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) after receiving that equipment state is replied, main controller execution step 8); If do not receive yet after 0.3s by inquiry equipment from control the replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x07 for the third time in primary link data1, packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive after equipment state reply data bag main controller execution step 8); Ask replying of device controller if do not receive yet after 0.3s, the equipment that main controller is 0x04 to remote-control center transmitter start code (TSC) is withdrawn request data package, and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn request data package data field for being ask equipment identification information;
(12) receive that equipment withdraws after request data package, remote-control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information of evacuation appliance is moved to evacuation appliance table from equipment list, and the equipment that is 0x05 to corresponding main controller transmitter start code (TSC) is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, show unit exception, the equipment that in remote-control, main controller transmitter start code (TSC) corresponding to mind-set is 0x05 is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x02,
(13) receive that equipment withdraws after reply data bag, if equipment withdraw, the corresponding information of main controller amendment equipment list and vacant physical address table; If equipment is not withdrawn, main controller is not to this facility information processing;
If all devices inquiry is complete and state is normal in main controller equipment list, the system mode normal data packet that main controller transmitter start code (TSC) is 0x06 is to remote-control center, and packet data territory is 0x00;
3) manually add the step of newly added equipment as follows:
Operating personnel are on LABVIEW " newly added equipment " interface, fill in " newly added equipment place DMX512 controls net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", click and send after button, the information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) newly added equipment packet that is 0x08, packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; Receive after newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and the physical address assignments packet that is 0x03 by primary link data1 transmitter start code (TSC), packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to not possess the equipment of 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 controls net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after apparatus modifications ", click and send after button, the amendment information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) equipment physical address Update Table bag that is 0x0a, packet data territory is the initial physical address after the original initial physical address of equipment identification information, equipment and apparatus modifications; Receive after equipment physical address Update Table bag, relevant device information in corresponding main controller amendment equipment list, and the equipment physical address Update Table bag that is 0x0b by primary link transmitter start code (TSC) is to corresponding from control device.
Described physical address assignments algorithm is:
Main controller calculates all vacant section of total physical address numbers in vacant physical address table, if vacant section of total physical address number is less than T, the not enough packet of address assignment that main controller is 0x03 by primary link data1 transmitter start code (TSC), this DMX512 of notice request equipment controls net physical address deficiency;
If vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is less than or equal to 1, the equipment list physical address in main controller is continuous, and the initial physical address of distributing to requesting service is
S
0＝0
Wherein, i is equipment serial number in main controller equipment list;
L is equipment serial number last in main controller equipment list;
S
ifor the device channels number that is i of sequence number in main controller equipment list;
Or vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is greater than 1, DMX512 controls net has equipment to withdraw, and in main controller, equipment list physical address is discontinuous, and each vacant section of physical address in the number of channels T of requesting service and vacant physical address table counted to N
irelatively, select to meet vacant section of following condition requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physical address of requesting service is set to selected vacant section of first address;
If in vacant physical address table without meeting vacant section of above-mentioned condition, for requesting service physical address being provided and ensureing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation reconstruction equipment list, newly-built equipment list physical address is continuous, and 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 newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and reset packet according to the initial physics address size of equipment in the newly-built equipment list physical address that transmitter start code (TSC) is 0x06 one by one, packet data territory comprises equipment identification information, the initial physical address of device reset; Receive that physical address resets after packet, correspondingly reset equipment physical address from control device, and the physical address that transmitter start code (TSC) is 0x07 resets reply data bag, packet data territory is the initial physical address of device reset; Receive that physical address resets after reply data bag, main controller carries out next equipment physical address to be reseted, until all existing equipment physical addresss have been reseted; Main controller sends physical address assignments packet to requesting service from control device; Receive that requesting service is from the physical address assignments reply data bag of control device transmission, main controller is deleted existing equipment table, revise vacant physical address table, and the equipment list upgrading data packet that is 0x03 to remote-control center transmitter start code (TSC), packet data territory comprises all devices information in newly-built equipment list; The equipment list upgrading data packet of receiving is covered existing equipment table by remote-control center.
Describedly secondary link data2 bus is carried out to carrier sense from control device sending before packet, when bus is busy, after waiting for 0.1ms, continue bus state inquiry, when bus is idle, judge by accident for reducing, if testbus state still sends data for the free time after time delay 10us; When data send, send a message, whether data query is sent completely, and finishes to send, if be not yet sent completely if data have been sent completely, read bus state instruction pin status, if find, bus is occupied, sends data and bumps, and stops sending, and adopt binary exponential backoff algorithm to implement to wait for, until again send data after the bus free time; When bus is idle, state is high level, and when bus is busy, state is low level.The transmission of major and minor link data bag still adopt the low level break that comprised 88us at least before initial code of standard DMX512 regulation and at least the high level of 8us as packet beginning flag;
When conflict being detected in equipment transmission data process, equipment, by adopting the index avoidance method of rise time, is avoided again conflicting.Retransmitting back off time can be obtained 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 number of retransmissions;
Being calculated as follows of contention time:
On secondary link, maximum data packet is physical address request data package, 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 and the interval of transfer of data, 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, re-starts bus state judgement.
The present invention adopts remote-control center and DMX512 to control net and combines, and DMX512 controls mesh portions without transformation, and backward compatible standard DMX512 product, makes full use of existing resource; Reporting equipment identification information after DMX512 equipment networking, main controller adopts physical address assignments algorithm, automatically distributes DMX512 equipment physical address, exempts manual operation; DMX512 equipment adopts carrier sense and binary system back off algorithm to prevent from reporting conflict; By the equipment list of automatic foundation, main controller can detect equipment state timing, and real-time report status of equipment is to remote-control center, and automatic updating maintenance equipment list; Operating personnel also can manually add as required, revise equipment physical address, realize hand and automatically combine.
Brief description of the drawings
Fig. 1 is support equipment identification and the DMX512 Landscape Lighting managing and control system figure safeguarding automatically;
Fig. 2 is the automatic identification process figure of DMX512 equipment;
Fig. 3 is DMX512 equipment sending data flow chart;
Fig. 4 is management and control central apparatus situation demonstration figure;
Fig. 5 manually adds newly added equipment surface chart;
Fig. 6 is manual modification equipment physical address surface chart.
Embodiment
As shown in Figure 1, remote-control center is controlled net by TCP/IP and DMX512 and is connected, DMX512 controls net and comprises that multiple DMX512 control a net, each DMX512 controls a net and comprises main controller module and multiple from control device module, main controller module is connected from control device module with the 1st to N by full duplex five-wire system, and main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, TXD pin respectively with the RO of main transceiver, DI pin is connected, the 6th of main transceiver, 5, 7, 8 pins respectively with the 2nd of main XLR5, 3, 4, 5 pins are connected, and i comprises that from control device module i is from control device, i transceiver and i XLR5 interface, i is from the RXD of control device, TXD pin respectively with the RO of i transceiver, DI pin is connected, i transceiver the 7th, 8, 6, 5 pins respectively with i from the 2nd of control device interface XLR5, 3, 4, 5 pins are connected, the 2nd of each XLR5 interface, 3, 4, 5 pins connect respectively the primary link data1+ of bus, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface is connected to the ground,
Be connected from the control transmitting terminal/receiving terminal of device and the receiving terminal/transmitting terminal of main controller, primary link data1 is for receiving from control device the information that main controller sends, adopt the master-slave mode standard DMX512 agreement of a point-to-multipoint, secondary link data2 is responsible for reporting and feedback information to main controller from control device, realizes the reserved self-defined expanded function of DMX512 agreement; The equipment list at remote-control center and evacuation appliance table are with the storage of excel form, and the management and control software at remote-control center adopts Labview G language compilation, can directly call and edit excel form.
As shown in Figure 2, it is as follows that DMX512 equipment is identified detailed process to the automatic identification process figure of DMX512 equipment automatically:
(1) after powering on, from control device judgment device, whether physical address is set, if arrange, this equipment has accessed DMX512 and has controlled net; If do not arrange, be the equipment that first access DMX512 controls net, 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 sending from control device is 0x02, packet data territory comprises equipment identification information, wherein device identification is the device product ID of the equipment manufacturer ID 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 the physical address request data package sending from control device, main controller is according to existing equipment list and vacant physical address table, calculate initial physical address and the physical address number after equipment networking by physical address assignments algorithm, and corresponding modify equipment list and vacant physical address table, the physical address assignments packet that main controller transmitter start code (TSC) in primary link data1 is 0x04, packet data territory comprises equipment identification information, the initial physical address of equipment distributing, or the transmitter start code (TSC) not enough packet of address assignment that is 0x03, 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 of sequence number, vacant section of initial physical address and vacant section of physical address number,
(3) if receive physical address assignments packet, the corresponding physical address of preserving, arrange each channel allocation from control device, networking indicator light goes out, and the physical address assignments reply data bag that is 0x05 to main controller feedback initial code, and packet data territory comprises the initial physical address of the equipment of distribution; If receive the not enough packet of address assignment, corresponding to the flicker of control device networking indicator light;
(4) receive after physical address assignments reply data bag, the newly added equipment packet that main controller is 0x02 to remote-control center transmitter start code (TSC), packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive after newly added equipment packet, remote-control center adds newly added equipment information the equipment list at management and control center;
Do not receive and reply if send after physics Address requests packet 0.3s, equipment sends physical address request data package again; If receive and reply not yet in 1s, the indicator light of networking flicker, indication fault, returns to 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 of sequence number, vacant section of initial physical address and vacant section of physical address number.
Table 1
Table 2
Physical address assignments algorithm comprises following content:
Main controller calculates all vacant section of total physical address numbers in vacant physical address table, if vacant section of total physical address number is less than T, the not enough packet of address assignment that main controller is 0x03 by primary link data1 transmitter start code (TSC), this DMX512 of notice request equipment controls net physical address deficiency;
If vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is less than or equal to 1, the equipment list physical address in main controller is continuous, and the initial physical address of distributing to requesting service is
S
0＝0
Wherein, i is equipment serial number in main controller equipment list;
L is equipment serial number last in main controller equipment list;
S
ifor the device channels number that is i of sequence number in main controller equipment list;
Or vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is greater than 1, DMX512 controls net has equipment to withdraw, and in main controller, equipment list physical address is discontinuous, and each vacant section of physical address in the number of channels T of requesting service and vacant physical address table counted to N
irelatively, select to meet vacant section of following condition requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physical address of requesting service is set to selected vacant section of first address;
If in vacant physical address table without meeting vacant section of above-mentioned condition, for requesting service physical address being provided and ensureing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation reconstruction equipment list, newly-built equipment list physical address is continuous, and 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 newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and reset packet according to the initial physics address size of equipment in the newly-built equipment list physical address that transmitter start code (TSC) is 0x06 one by one, packet data territory comprises equipment identification information, the initial physical address of device reset; Receive that physical address resets after packet, correspondingly reset equipment physical address from control device, and the physical address that transmitter start code (TSC) is 0x07 resets reply data bag, packet data territory is the initial physical address of device reset; Receive that physical address resets after reply data bag, main controller carries out next equipment physical address to be reseted, until all existing equipment physical addresss have been reseted; Main controller sends physical address assignments packet to requesting service from control device; Receive that requesting service is from the physical address assignments reply data bag of control device transmission, main controller is deleted existing equipment table, revise vacant physical address table, and the equipment list upgrading data packet that is 0x03 to remote-control center transmitter start code (TSC), packet data territory comprises all devices information in newly-built equipment list; The equipment list upgrading data packet of receiving is covered existing equipment table by remote-control center.
DMX512 equipment sending data flow chart as shown in Figure 3, before sending packet, secondary link data2 bus is carried out to carrier sense from control device, when bus is busy, after waiting for 0.1ms, continue bus state inquiry, when bus is idle, judge by accident for reducing, if testbus state still sends data for the free time after time delay 10us; When data send, send a message, whether data query is sent completely, and finishes to send, if be not yet sent completely if data have been sent completely, read bus state instruction pin status, if find, bus is occupied, sends data and bumps, and stops sending, and adopt binary exponential backoff algorithm to implement to wait for, until again send data after the bus free time; When bus is idle, state is high level, and when bus is busy, state is low level.The transmission of major and minor link data bag still adopt the low level break that comprised 88us at least before initial code of standard DMX512 regulation and at least the high level of 8us as packet beginning flag;
When conflict being detected in equipment transmission data process, equipment, by adopting the index avoidance method of rise time, is avoided again conflicting.Retransmitting back off time can be obtained 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 number of retransmissions;
Being calculated as follows of contention time:
On secondary link, maximum data packet is physical address request data package, 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 and the interval of transfer of data, 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, re-starts bus state judgement.
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported to remote-control center, and according to existing equipment list and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected to inquiry automatically;
(6) the status poll packet that main controller transmitter start code (TSC) in primary link data1 is 0x08, packet data territory is by the initial physical address of inquiry equipment;
(7) receive after status poll packet, corresponding to control device checkout facility state, if equipment state is normal, the corresponding state normal data packet that is 0x09 from control device transmitter start code (TSC), packet data territory is by the initial physical address of inquiry equipment; If unit exception, the corresponding abnormal state packet that is 0x0a from control device transmitter start code (TSC), packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8), after receiving that equipment state is replied, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is abnormal, the equipment state abnormal data bag that main controller transmitter start code (TSC) is 0x07 is to remote-control center, and carries out next device status inquiries;
(9) if do not receive after 0.3s, correspondence is from controlling replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x08 for the second time in primary link data1, and packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) after receiving that equipment state is replied, main controller execution step 8); If do not receive yet after 0.3s by inquiry equipment from control the replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x07 for the third time in primary link data1, packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive after equipment state reply data bag main controller execution step 8); Ask replying of device controller if do not receive yet after 0.3s, the equipment that main controller is 0x04 to remote-control center transmitter start code (TSC) is withdrawn request data package, and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn request data package data field for being ask equipment identification information;
(12) receive that equipment withdraws after request data package, remote-control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information of evacuation appliance is moved to evacuation appliance table from equipment list, and the equipment that is 0x05 to corresponding main controller transmitter start code (TSC) is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, show unit exception, the equipment that in remote-control, main controller transmitter start code (TSC) corresponding to mind-set is 0x05 is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x02,
(13) receive that equipment withdraws after reply data bag, if equipment withdraw, the corresponding information of main controller amendment equipment list and vacant physical address table; If equipment is not withdrawn, main controller is not to this facility information processing;
If all devices inquiry is complete and state is normal in main controller equipment list, the system mode normal data packet that main controller transmitter start code (TSC) is 0x06 is to remote-control center, and packet data territory is 0x00.
As shown in Figure 4, main controller Condition Detection result is back to remote-control center, normal if DMX512 controls net equipment state, and it is bright that " status of equipment " interface phase answers DMX512 to control net state indicator light; If main controller detects unit exception, Returning equipment abnormal state packet, abnormal facility information is presented at corresponding DMX512 and controls net " abnormal equipment " region, corresponding state indicator light goes out, the equipment for the treatment of recovers normal, click this status indicator lamp, bright and " abnormal equipment " the region zero clearing of status indicator lamp; If management and control center P C receives equipment and withdraws request data package, corresponding DMX512 controls the flicker of net state indicator light, withdraw requesting service information and be presented at corresponding DMX512 control net " abnormal equipment " region, 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 reply data bag to corresponding main controller, and automatically adding evacuation appliance information to evacuation appliance table, operating personnel open equipment list by evacuation appliance information deletion; If equipment is not withdrawn, status indicator lamp goes out, and shows unit exception, and management and control center transmitting apparatus is withdrawn reply data bag to corresponding main controller, now needs staff to overhaul equipment.
Operating personnel can manually add at remote-control center newly-increased, evacuation appliance information, be applicable to not possess the equipment of information feedback function, also manual modification equipment physical address as required, simultaneously can choice criteria DMX512 pattern, adopt toggle switch or write location device write device physical address, completely compatible 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 controls net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", click and send after button, the information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) newly added equipment packet that is 0x08, packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; Receive after newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and the physical address assignments packet that is 0x03 by primary link data1 transmitter start code (TSC), packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to not possess the equipment of 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 controls net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after apparatus modifications ", click and send after button, the amendment information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) equipment physical address Update Table bag that is 0x0a, packet data territory is equipment identification information, initial physical address after the original initial physical address of equipment and apparatus modifications, receive after equipment physical address Update Table bag, relevant device information in corresponding main controller amendment equipment list, and the equipment physical address Update Table bag that is 0x0b by primary link transmitter start code (TSC) is to corresponding from control device.
Attached:
Table 5-main controller-from control device packet start code;
Table 6-remote-control center-main controller packet start code.
Table 5
| 0x00 | Main controller sends data (physical address addressing) |
| 0x01 | Main controller sends data (logical group address addressing) |
| 0x02 | From control device request physical address |
| 0x03 | Main controller Notify Address distributes not enough |
| 0x04 | Main controller allocated physical address |
| 0x05 | Reply physical address assignments from control device |
| 0x06 | Main controller is reseted physical address |
| 0x07 | Reply and reset physical address from control device |
| 0x08 | Main controller query facility state |
| 0x09 | Normal from control device feedback states |
| 0x0a | Abnormal from control device feedback states |
| 0x0b | Main controller sends amendment equipment physical address information |
Table 6
| 0x00 | PC sends data |
| 0x01 | PC sends data (logical group address addressing) |
| 0x02 | Main controller reports newly added equipment information |
| 0x03 | The upgrading of main controller reporting equipment table |
| 0x04 | Main controller transmitting apparatus is withdrawn request |
| 0x05 | 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 amendment equipment physical address information |
Claims (3)
1. the method for the automatic DMX512 Landscape Lighting management and control of identifying and safeguard of support equipment, it is characterized in that, adopt support equipment identification and the DMX512 Landscape Lighting managing and control system of safeguarding automatically, in managing and control system, remote-control center is controlled net by TCP/IP and DMX512 and is connected, DMX512 controls net and comprises that multiple DMX512 control a net, each DMX512 controls a net and comprises main controller module and multiple from control device module, main controller module is connected from control device module with the 1st to N by full duplex five-wire system, and main controller module comprises main controller, main transceiver and main XLR5 interface, the RXD of main controller, TXD pin respectively with the RO of main transceiver, DI pin is connected, the 6th of main transceiver, 5, 7, 8 pins respectively with the 2nd of main XLR5, 3, 4, 5 pins are connected, and i comprises that from control device module i is from control device, i transceiver and i XLR5 interface, i is from the RXD of control device, TXD pin respectively with the RO of i transceiver, DI pin is connected, i transceiver the 7th, 8, 6, 5 pins respectively with i from the 2nd of control device interface XLR5, 3, 4, 5 pins are connected, the 2nd of each XLR5 interface, 3, 4, 5 pins connect respectively the primary link data1+ of bus, data1-and secondary link data2+, data2-, the 1st pin of each XLR5 interface is connected to the ground,
Be connected from the control transmitting terminal/receiving terminal of device and the receiving terminal/transmitting terminal of main controller, primary link data1 is for receiving from control device the information that main controller sends, adopt the master-slave mode standard DMX512 agreement of a point-to-multipoint, secondary link data2 is responsible for reporting and feedback information to main controller from control device, realizes the reserved self-defined expanded function of DMX512 agreement; The equipment list at remote-control center and evacuation appliance table are with the storage of excel form, and the management and control software at remote-control center adopts Labview G language compilation, directly calls and edit excel form;
Method comprises that the automatic identification of equipment and maintenance, equipment detect inquiry, manual newly-increased/evacuation appliance information, the manual modification equipment physical address of adding automatically, choice criteria DMX512 pattern simultaneously, adopt toggle switch or write location device write device physical address, compatible existing DMX512 product completely, wherein
1) identification is as follows with the step of safeguarding automatically for equipment:
(1) after powering on, from control device judgment device, whether physical address is set, if arrange, this equipment has accessed DMX512 and has controlled net; If do not arrange, be the equipment that first access DMX512 controls net, 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 sending from control device is 0x02, packet data territory comprises equipment identification information, wherein device identification is the device product ID of the equipment manufacturer ID 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, pass through from the zero clearing of control device pin off-line at this equipment physical address;
(2) receive the physical address request data package sending from control device, main controller is according to existing equipment list and vacant physical address table, calculate initial physical address and the physical address number after equipment networking by physical address assignments algorithm, and corresponding modify equipment list and vacant physical address table, the physical address assignments packet that main controller transmitter start code (TSC) in primary link data1 is 0x04, packet data territory comprises equipment identification information, the initial physical address of equipment distributing, or the transmitter start code (TSC) not enough packet of address assignment that is 0x03, 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 of sequence number, vacant section of initial physical address and vacant section of physical address number,
(3) if receive physical address assignments packet, the corresponding physical address of preserving, arrange each channel allocation from control device, networking indicator light goes out, and the physical address assignments reply data bag that is 0x05 to main controller feedback initial code, and packet data territory comprises the initial physical address of the equipment of distribution; If receive the not enough packet of address assignment, corresponding to the flicker of control device networking indicator light;
(4) receive after physical address assignments reply data bag, the newly added equipment packet that main controller is 0x02 to remote-control center transmitter start code (TSC), packet data territory is equipment identification information, the initial physical address of equipment;
(5) receive after newly added equipment packet, remote-control center adds newly added equipment information the equipment list at management and control center;
Do not receive and reply if send after physics Address requests packet 0.3s, equipment sends physical address request data package again; If receive and reply not yet in 1s, the indicator light of networking flicker, indication fault, returns to step 1 after fixing a breakdown);
2) automatically to detect the step of inquiry as follows for equipment:
Main controller detects inquiry automatically every 15 minutes facilities and equipments, and testing result is reported to remote-control center, and according to existing equipment list and vacant physical address table, main controller adopts the mode of poll successively equipment to be detected to inquiry automatically;
(6) the status poll packet that main controller transmitter start code (TSC) in primary link data1 is 0x08, packet data territory is by the initial physical address of inquiry equipment;
(7) receive after status poll packet, corresponding to control device checkout facility state, if equipment state is normal, the corresponding state normal data packet that is 0x09 from control device transmitter start code (TSC), packet data territory is by the initial physical address of inquiry equipment; If unit exception, the corresponding abnormal state packet that is 0x0a from control device transmitter start code (TSC), packet data territory comprises by the initial physical address of inquiry equipment, abnormality code;
(8), after receiving that equipment state is replied, if equipment state is normal, main controller carries out next device status inquiries; If equipment state is abnormal, the equipment state abnormal data bag that main controller transmitter start code (TSC) is 0x07 is to remote-control center, and carries out next device status inquiries;
(9) if do not receive after 0.3s, correspondence is from controlling replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x08 for the second time in primary link data1, and packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(10) after receiving that equipment state is replied, main controller execution step 8); If do not receive yet after 0.3s by inquiry equipment from control the replying of device, the main controller status poll packet that transmitter start code (TSC) is 0x07 for the third time in primary link data1, packet data territory is by the arbitrary non-initial physical address of inquiry equipment;
(11) receive after equipment state reply data bag main controller execution step 8); Ask replying of device controller if do not receive yet after 0.3s, the equipment that main controller is 0x04 to remote-control center transmitter start code (TSC) is withdrawn request data package, and request management and control center confirms whether withdrawn by inquiry equipment, and carries out next device status inquiries; Equipment is withdrawn request data package data field for being ask equipment identification information;
(12) receive that equipment withdraws after request data package, remote-control center is further confirmed to be ask equipment state, if withdrawn by inquiry equipment, the information of evacuation appliance is moved to evacuation appliance table from equipment list, and the equipment that is 0x05 to corresponding main controller transmitter start code (TSC) is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x01, if do not withdrawn by inquiry equipment, show unit exception, the equipment that in remote-control, main controller transmitter start code (TSC) corresponding to mind-set is 0x05 is withdrawn reply data bag, packet data territory is evacuation appliance identification information and 0x02,
(13) receive that equipment withdraws after reply data bag, if equipment withdraw, the corresponding information of main controller amendment equipment list and vacant physical address table; If equipment is not withdrawn, main controller is not to this facility information processing;
If all devices inquiry is complete and state is normal in main controller equipment list, the system mode normal data packet that main controller transmitter start code (TSC) is 0x06 is to remote-control center, and packet data territory is 0x00;
3) manually add the step of newly added equipment as follows: operating personnel are on LABVIEW " newly added equipment " interface, fill in " newly added equipment place DMX512 controls net gateway ip address ", " newly added equipment identification information ", " the initial physical address of newly added equipment ", click and send after button, the information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) newly added equipment packet that is 0x08, packet data territory is newly added equipment identification information, the initial physical address of newly added equipment; Receive after newly added equipment packet, corresponding main controller adds newly added equipment information to equipment list, and the physical address assignments packet that is 0x03 by primary link data1 transmitter start code (TSC), packet data territory is newly added equipment identification information, the initial physical address of newly added equipment, is applicable to not possess the equipment of 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 controls net gateway ip address ", " equipment identification information ", " the original initial physical address of equipment " and " the initial physical address after apparatus modifications ", click and send after button, the amendment information of filling in is preserved automatically to equipment list in remote-control center, and the transmitter start code (TSC) equipment physical address Update Table bag that is 0x0a, packet data territory is the initial physical address after the original initial physical address of equipment identification information, equipment and apparatus modifications; Receive after equipment physical address Update Table bag, relevant device information in corresponding main controller amendment equipment list, and the equipment physical address Update Table bag that is 0x0b by primary link transmitter start code (TSC) is to corresponding from control device.
2. the method for the DMX512 Landscape Lighting management and control of the automatic identification of a kind of support equipment according to claim 1 and maintenance, is characterized in that described physical address assignments algorithm is:
Main controller calculates all vacant section of total physical address numbers in vacant physical address table, if vacant section of total physical address number is less than T, the not enough packet of address assignment that main controller is 0x03 by primary link data1 transmitter start code (TSC), this DMX512 of notice request equipment controls net physical address deficiency;
If vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is less than or equal to 1, the equipment list physical address in main controller is continuous, and the initial physical address of distributing to requesting service is
S
0=0
Wherein, i is equipment serial number in main controller equipment list;
L is equipment serial number last in main controller equipment list;
S
ifor the device channels number that is i of sequence number in main controller equipment list;
Or vacant section of total physical address number is more than or equal to T, and in vacant physical address table, vacant section of number is greater than 1, DMX512 controls net has equipment to withdraw, and in main controller, equipment list physical address is discontinuous, and each vacant section of physical address in the number of channels T of requesting service and vacant physical address table counted to N
irelatively, select to meet vacant section of following condition requesting service physical address be provided:
N
i-T≥0
min(N
i)，1≤i≤X
The initial physical address of requesting service is set to selected vacant section of first address;
If in vacant physical address table without meeting vacant section of above-mentioned condition, for requesting service physical address being provided and ensureing that device interior interchannel physical address is continuous, main controller adopts dos defragmentation reconstruction equipment list, newly-built equipment list physical address is continuous, and 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 newly-built equipment list closely, and concrete physical address assignments is:
The newly-built equipment list of main controller, and reset packet according to the initial physics address size of equipment in the newly-built equipment list physical address that transmitter start code (TSC) is 0x06 one by one, packet data territory comprises equipment identification information, the initial physical address of device reset; Receive that physical address resets after packet, correspondingly reset equipment physical address from control device, and the physical address that transmitter start code (TSC) is 0x07 resets reply data bag, packet data territory is the initial physical address of device reset; Receive that physical address resets after reply data bag, main controller carries out next equipment physical address to be reseted, until all existing equipment physical addresss have been reseted; Main controller sends physical address assignments packet to requesting service from control device; Receive that requesting service is from the physical address assignments reply data bag of control device transmission, main controller is deleted existing equipment table, revise vacant physical address table, and the equipment list upgrading data packet that is 0x03 to remote-control center transmitter start code (TSC), packet data territory comprises all devices information in newly-built equipment list; The equipment list upgrading data packet of receiving is covered existing equipment table by remote-control center.
3. the method for the DMX512 Landscape Lighting management and control of the automatic identification of a kind of support equipment according to claim 1 and maintenance, described in it is characterized in that, before sending packet, secondary link data2 bus is carried out to carrier sense from control device, when bus is busy, after waiting for 0.1ms, continue bus state inquiry, when bus is idle, judge by accident for reducing, if testbus state still sends data for the free time after time delay 10us; When data send, send a message, whether data query is sent completely, and finishes to send, if be not yet sent completely if data have been sent completely, read bus state instruction pin status, if find, bus is occupied, sends data and bumps, and stops sending, and adopt binary exponential backoff algorithm to implement to wait for, until again send data after the bus free time; When bus is idle, state is high level, when bus is busy, state is low level, the transmission of major and minor link data bag still adopt the low level break that comprised 88us at least before initial code of standard DMX512 regulation and at least the high level of 8us as packet beginning flag;
When conflict being detected in equipment transmission data process, equipment, by adopting the index avoidance method of rise time, is avoided again conflicting, and retransmits back off time and is obtained 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 number of retransmissions;
Being calculated as follows of contention time:
On secondary link, maximum data packet is physical address request data package, 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 and the interval of transfer of data, 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, re-starts bus state judgement.
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| CN105792424B (en) * | 2016-04-13 | 2020-05-01 | 大连工业大学 | Controller based on DMX512 protocol |
| CN106373358B (en) * | 2016-08-31 | 2020-06-02 | 成都前锋电子仪器有限责任公司 | Data forwarding method for concentrator and collector |
| CN106131085B (en) * | 2016-08-31 | 2019-09-17 | 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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