CN1181298C - Network type air conditioner remote monitoring system - Google Patents
Network type air conditioner remote monitoring system Download PDFInfo
- Publication number
- CN1181298C CN1181298C CNB011418834A CN01141883A CN1181298C CN 1181298 C CN1181298 C CN 1181298C CN B011418834 A CNB011418834 A CN B011418834A CN 01141883 A CN01141883 A CN 01141883A CN 1181298 C CN1181298 C CN 1181298C
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- slave
- main frame
- data
- host computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000010977 unit operation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Images
Landscapes
- Air Conditioning Control Device (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention provides a network type air conditioner remote monitoring system, which comprises an upper computer and an air conditioner serving as a lower computer, wherein a control circuit of the air conditioner comprises a microprocessor (CPU), and the upper computer is a computer connected with a modem through a communication interface; the control circuit of the air conditioner also comprises a data processing unit with more than two communication interfaces, the data processing unit is connected with a CPU of the air conditioner through the communication interfaces and can be connected with a modem through another communication interface; the modems are all accessed to a public telephone network, and the upper computer and the lower computer realize the transmission of data and information through the service of the public telephone network. The network type air conditioner remote monitoring system can remotely monitor air conditioners in a large-scale area, and has the advantages of simple system circuit structure, convenient and reliable operation, low operation cost and strong practicability.
Description
Technical field
The present invention relates to the remote monitor supervision area of air conditioner.
Background technology
The remote monitoring of so-called air conditioner is meant by communication line, carries out the transmission of data and information between air conditioner and remote central control unit, thereby realizes the technology to the remote monitor of air conditioner.The air conditioner long-distance monitoring technology generally is applied in following occasion, as: unattended terminal, base station, transmitting station, machine room, archives, storehouse, some office, hotel etc.In the prior art, air conditioner long-distance monitoring system adopts special circuit to carry out communication mostly, as central air conditioner etc., and the limited and inconvenient operation of monitoring distance.Patent ZL99208154.8 " network type air conditioner " discloses a kind of network type air conditioner, promptly utilize telephone communication network air conditioner to be carried out the system of remote monitoring, the indoor electric brain controller of its air conditioner comprises microprocessor, storer, infrared signal receiving end and plurality of states detection port, it is characterized in that this indoor controller also has telephone line interface, be connected with bell flowing detecting circuit and data transmit-receive circuit with this telephone line interface, described microprocessor has I/O (I/O) port to be connected with the data transmit-receive circuit with this bell flowing detecting circuit.The air conditioner that above-mentioned network type air conditioner is necessary for as slave computer is provided with special circuit, and telephone line interface is set, and makes it can be by telephone wire and extraneous communication, and this control circuit complexity is not general, unreliable, brings a lot of troubles to operation.Simultaneously, above-mentioned patent does not solve the technical matters in principal and subordinate's cluster topology connected mode of slave computer in the network type air conditioner.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, a kind of existing telephone communication network that utilizes is provided, line construction is simple, monitoring range is big, highly versatile, reliable, easy to operate network type air conditioner long-distance monitoring system.
The object of the present invention is achieved like this: a kind of network type air conditioner long-distance monitoring system, comprise host computer and as the air conditioner of slave computer, include microprocessor (CPU) in the control circuit of described air conditioner, the computing machine of described host computer for being connected with modulator-demodular unit by communication interface, also comprise the data processing unit that has plural communication interface in the control circuit of described air conditioner, described data processing unit links to each other with the CPU of air conditioner by communication interface, and can be connected with modulator-demodular unit by other communication interface; Described modulator-demodular unit all inserts public telephone network, realizes the transmission of data and information between described host computer and the slave computer by the service of public telephone network; Described host computer is the PC that links to each other with modulator-demodular unit by the RS232 interface.
Implement network type air conditioner long-distance monitoring system of the present invention, owing to utilized public telephone network to carry out the transmission of data and information, thereby can carry out remote monitor to the air conditioner in the extensive area, system line is simple in structure, the operation and move convenient and reliable, operation cost is low, has very strong practicality.
Description of drawings
Fig. 1 is the system principle diagram of the embodiment one of network type air conditioner long-distance monitoring system of the present invention;
Fig. 2 is in the network type air conditioner long-distance monitoring system shown in Figure 1, as the communication interface circuit block diagram of the air conditioner of slave computer;
Fig. 3 is in the communication interface circuit shown in Figure 2, the physical circuit connection layout of data processing unit part;
Fig. 4 is in the network type air conditioner long-distance monitoring system shown in Figure 1, the monitoring process flow diagram of host computer;
Fig. 5 is in the network type air conditioner long-distance monitoring system shown in Figure 1, the operational flow diagram of slave computer;
Fig. 6 is among the embodiment two of network type air conditioner long-distance monitoring system of the present invention, system's connection diagram of principal and subordinate's cluster topology of slave computer;
Fig. 7 is in the network type air conditioner long-distance monitoring system shown in Figure 6, the operational flow diagram of main frame in the slave computer;
Fig. 8 is in the network type air conditioner long-distance monitoring system shown in Figure 6, the operational flow diagram of slave in the slave computer;
Fig. 9 is that the system of the embodiment three of network type air conditioner long-distance monitoring system of the present invention connects intention.
Embodiment
As shown in Figure 1, in embodiments of the invention one, network type air conditioner long-distance monitoring system comprises the modulator-demodular unit of modulator-demodular unit, slave computer and the slave computer of host computer, host computer, and described modulator-demodular unit all inserts public telephone network.
Host computer is to adopt the PC that links to each other with modulator-demodular unit by the RS232 interface.
Slave computer is an air conditioner, has had the CPU of master control effect in its control circuit, and described CPU receives various detection signals, and controls the operation of compressor, blower fan, motor etc. by CPU, thereby realizes the control to air conditioner.In the present embodiment, air conditioner directly carries out communication as slave computer and host computer.As shown in Figure 2, in the control circuit of air conditioner, also be provided with data processing unit, described data processing unit can be realized communication with the master cpu of air conditioner by air conditioner master control borad communication interface, on the other hand, data processing unit also is connected with communication interface and principal and subordinate's machine communication interface, thereby can be by the communication between communication interface realization and the modulator-demodular unit, and principal and subordinate's machine communication interface is the connection that is used for the lower computer system of principal and subordinate's cluster topology.
As shown in Figure 3, in the present embodiment, data processing unit is to adopt the single-chip microcomputer that has asynchronous serial communication mouth (UART), and the chip model is PIC16F873.Communication interface is the RS232 interface, and the level conversion unit between itself and the data processing unit is that to adopt model be the chip of MAX232E; Principal and subordinate's machine communication interface is the RS485 interface, and the level conversion unit between itself and the data processing unit is that to adopt model be the chip of MAX3082.The master cpu of air conditioner is that the employing model is the chip of MC6811C705B16N, the pin one, 17,18 of data processing unit chip PIC16F873 connects the pin one 9,55,53 of air conditioner main control chip MC68HC705B16N respectively, thus the data between realization data processing unit and the air conditioner main control chip and the transmission of information.
Slave computer both can have been selected by the host computer centralized control, also can select to be controlled voluntarily by the control device of slave computer.When selecting, between host computer and the slave computer transmitting-receiving that realizes data and information by public telephone network by the host computer centralized control.
As shown in Figure 4, bring into operation and power-up initializing after, the monitoring flow process of host computer is as follows:
(6) controller in the host computer judges whether the controlled variable of the relevant air conditioner that is provided with in the host computer changes, and does not change, and then enters step (2); Change, then enter step (4);
(7) automatic off-hook is dialled the slave computer telephone number, puts through not, does not put through, and then redials automatically; Put through, then enter step (3);
(8) will send to the packing data of slave computer, and send to slave computer in the mode of self-defining data bag, and send and enter next step after finishing by modulator-demodular unit;
(9) judge whether to receive self-defining data bag,, then return step (3) if do not receive from slave computer; If receive, then on-hook enters next step;
(10) read the data that receive with the self-defining data packet mode, analyze and demonstration slave computer working condition, return step (1).
As shown in Figure 5, bring into operation and power-up initializing after, slave computer receives the control information from host computer on the one hand, on the one hand the ruuning situation with slave computer sends to host computer with the self-defining data packet mode.The operational scheme of slave computer is as follows:
(9) modulator-demodular unit is judged has ringdown not, if do not have, then continues to wait for, if having, then enters next step;
(10) judge whether ring reaches set point number (three times), is, automatic off-hook then, otherwise continue to wait for;
(11) data processing unit judges whether to receive the self-defining data bag from host computer, if do not have, then continues to wait for to receive, if having, then enters next step;
(12) read the information that host computer sends with the self-defining data packet mode, form remote control mode, and then form the transmission sign indicating number, delete this self-defining data bag then;
(13) with the described yard master cpu that sends to air conditioner that sends, master cpu is according to the control of the information enforcement that receives to air conditioner;
(14) data processing unit reads the data in the master cpu of air conditioner, if the data that read are made mistakes, then reads again, if data are correct, then enters next step;
(15) data processing that reads is become the self-defining data packet format, and send to host computer, after transmission finishes, wait for that host computer sends on-hook signal, returns step (1) by modulator-demodular unit.
As shown in Figure 6, in embodiments of the invention two, slave computer is the system architecture that adopts principal and subordinate's cluster.Slave computer comprises the main frame of band microprocessor (CPU) and as the air conditioner of slave, adopts the RS485 serial communication between main frame and the slave.Main frame can adopt the PC of band RS232 interface, also can adopt the air conditioner that has RS485 principal and subordinate control interface controller; Slave is an air conditioner, and its communication interface is identical with embodiment one, but has implemented different system's connected modes.The UART single-chip microcomputer of slave is by 485 chips (can adopt model is the chip of MAX3082, MAX3081, MAX487), light isolating chip (can adopt model is PC817) is connected telecommunication cable one end with the RS485 interface, the other end of telecommunication cable inserts main frame by 485-232 converter (can adopt model is the converter of HF485N, HT4481), and main frame links to each other with modulator-demodular unit by the RS232 interface.Telecommunication cable can adopt two classes or three class twisted-pair feeders.Have 1 in each principal and subordinate's group system to the individual slave of X (X＜=1024)
It between host computer and the slave computer transmission that realizes data and information by public telephone network.Communication modes between main frame and the slave adopts master-slave mode, and host computer control bus, and slave has unique address, Data transmission mutually between main frame and the slave.Slave both can have been selected by the main frame centralized control, also can select to be controlled voluntarily by the control device of slave.When the address setting of slave was 0, slave can't carry out communication with main frame, and then the running status of slave is controlled voluntarily by it; When the address setting of slave was not 0, slave can carry out the communication with main frame, and then the running status of slave is by the main frame centralized control.
As shown in Figure 7, bring into operation and power-up initializing after, main frame receives the control information from host computer on the one hand, on the one hand the ruuning situation with slave sends to host computer.The operational scheme of main frame is as follows:
(5) modulator-demodular unit is judged has ringdown not, if do not have, then continues to wait for, if having, then enters next step;
(6) judge whether ring reaches set point number (three times), is, automatic off-hook then, otherwise continue to wait for;
(7) main frame judges whether to receive the self-defining data bag from host computer, if do not have, then continues to wait for to receive, if having, then enters next step;
(8) read the information that host computer sends with the self-defining data packet mode, form remote control mode, and then form the transmission sign indicating number, delete this self-defining data bag then;
(5) described transmission sign indicating number is sent to slave by data bus;
(6) receive the data that also correctly read from slave;
(7) data processing that reads is become the self-defining data packet format, and send to host computer, after transmission finishes, wait for that host computer sends on-hook signal, returns step (1) by modulator-demodular unit.
As shown in Figure 8, slave bring into operation and power-up initializing after, the operational scheme of slave is as follows:
(1) main frame judges whether the plane No. that is provided with in the slave control device is 0, if, then enter step (2), if not, step (3) then entered;
(2) press single cpu mode operation, remote-controlled, that panel parameter is provided with button is effective at this moment, can operation push-button, key information is stored in the storer of slave; Return step (1) then;
(3) slave receives the data that main frame sends;
(4) judge in the transmission sign indicating number of main frame whether gating signal is arranged,, then enter step (6),, then enter step (5) if having if do not have;
(5) judge in the transmission sign indicating number of main frame whether this machine plane No. is arranged,, then enter step (6) if do not have; If have, then enter step (7);
(6) by the parameter operation that from storer, is provided with; Return step (1) then;
(7) receive the data that main frame sends;
(8) judge whether the data that main frame sends are effective, if invalid, enter step (6), if effectively, enter following steps;
(9) by the data parameters operation that receives;
(10) the unit operation situation is sent to main frame; Return step (1) then.
As shown in Figure 9, in embodiments of the invention three, slave computer is that the system of hybrid mode connects, both included the air conditioner of direct and upper machine communication, include the air conditioner cluster of principal and subordinate's group system structure again, described air conditioner cluster comprises the main frame of band microprocessor (CPU) and as the air conditioner of slave, adopts the RS485 serial communication between main frame and the slave.As shown in Figure 9, (M＜N) is directly as the air conditioner of slave computer to the next plane No. 1 to M, and M+1 is the air conditioner cluster of principal and subordinate's group system structure to N, and has 1 to arrive the individual slave of X (X≤1024) in each principal and subordinate's group system.Host computer and slave computer are lived by common electrical and are netted the transmission that realizes data and information; In principal and subordinate's group system, adopt the master-slave communication mode to realize the transmission of data and information between main frame and the slave.
Claims (12)
1. network type air conditioner long-distance monitoring system comprises host computer and as the air conditioner of slave computer, includes microprocessor (CPU) in the control circuit of described air conditioner, the computing machine of described host computer for being connected with modulator-demodular unit by communication interface; It is characterized in that, also comprise the data processing unit that has plural communication interface in the control circuit of described air conditioner, described data processing unit links to each other with the CPU of air conditioner by communication interface, and can be connected with modulator-demodular unit by other communication interface; Described modulator-demodular unit all inserts public telephone network, realizes the transmission of data and information between described host computer and the slave computer by the service of public telephone network; Described host computer is the PC that links to each other with modulator-demodular unit by the RS232 interface.
2. network type air conditioner long-distance monitoring system according to claim 1 is characterized in that: the monitoring flow process of described host computer is as follows:
(1) controller in the host computer judges whether the controlled variable of the relevant air conditioner that is provided with in the host computer changes, and does not change, and then enters step (2); Change, then enter step (4);
(2) automatic off-hook is dialled the slave computer telephone number, puts through not, does not put through, and then redials automatically; Put through, then enter step (3);
(3) will send to the packing data of slave computer, and send to slave computer in the mode of self-defining data bag, and send and enter next step after finishing by modulator-demodular unit;
(4) judge whether to receive self-defining data bag,, then return step (3) if do not receive from slave computer; If receive, then on-hook enters next step;
(5) read the data that receive with the self-defining data packet mode, analyze and demonstration slave computer working condition, return step (1).
3. network type air conditioner long-distance monitoring system according to claim 1 is characterized in that: the operational scheme of described slave computer is as follows:
(1) modulator-demodular unit is judged has ringdown not, if do not have, then continues to wait for, if having, then enters next step;
(2) judge whether ring reaches set point number, is, automatic off-hook then, otherwise continue to wait for;
(3) data processing unit judges whether to receive the self-defining data bag from host computer, if do not have, then continues to wait for to receive, if having, then enters next step;
(4) read the information that host computer sends with the self-defining data packet mode, form remote control mode, and then form the transmission sign indicating number, delete this self-defining data bag then;
(5) with the described yard master cpu that sends to air conditioner that sends, master cpu is according to the control of the information enforcement that receives to air conditioner;
(6) data processing unit reads the data in the master cpu of air conditioner, if the data that read are made mistakes, then reads again, if data are correct, then enters next step;
(7) data processing that reads is become the self-defining data packet format, and send to host computer, after transmission finishes, wait for that host computer sends on-hook signal, returns step (1) by modulator-demodular unit.
4. network type air conditioner long-distance monitoring system according to claim 1 is characterized in that: the data processing unit of described air conditioner is to adopt the single-chip microcomputer that has asynchronous serial communication mouth (UART).
5. network type air conditioner long-distance monitoring system according to claim 1, it is characterized in that: described data processing unit is that the employing model is the chip of PIC16F873, communication interface is the RS232 interface, and the level conversion unit between itself and the data processing unit is that to adopt model be the chip of MAX232E; Principal and subordinate's machine communication interface is the RS485 interface, and the level conversion unit between itself and the data processing unit is that to adopt model be the chip of MAX3082; The master cpu of air conditioner is that the employing model is the chip of MC68HC705B16N, the pin one, 17,18 of data processing unit chip PIC16F873 connects the pin one 9,55,53 of air conditioner main control chip MC68HC705B16N respectively, thus the data between realization data processing unit and the air conditioner main control chip and the transmission of information.
6. network type air conditioner long-distance monitoring system according to claim 1 is characterized in that: described slave computer is the system architecture that adopts principal and subordinate's cluster; Described slave computer comprises the main frame of band microprocessor (CPU) and as the air conditioner of slave, adopts the RS485 serial communication between main frame and the slave.
7. network type air conditioner long-distance monitoring system according to claim 6 is characterized in that: the operational scheme of described main frame is as follows:
(1) modulator-demodular unit is judged has ringdown not, if do not have, then continues to wait for, if having, then enters next step;
(2) judge whether ring reaches set point number (three times), is, automatic off-hook then, otherwise continue to wait for;
(3) main frame judges whether to receive the self-defining data bag from host computer, if do not have, then continues to wait for to receive, if having, then enters next step;
(4) read the information that host computer sends with the self-defining data packet mode, form remote control mode, and then form the transmission sign indicating number, delete this self-defining data bag then;
(5) described transmission sign indicating number is sent to slave by data bus;
(6) receive the data that also correctly read from slave;
(8) data processing that reads is become the self-defining data packet format, and send to host computer, after transmission finishes, wait for that host computer sends on-hook signal, returns step (1) by modulator-demodular unit.
8. network type air conditioner long-distance monitoring system according to claim 6 is characterized in that: the operational scheme of described slave is as follows:
(1) main frame judges whether the plane No. that is provided with in the slave control device is 0, if, then enter step (2), if not, step (3) then entered;
(2) press single cpu mode operation, remote-controlled, that panel parameter is provided with button is effective at this moment, can operation push-button, key information is stored in the storer of slave; Return step (1) then;
(3) slave receives the data that main frame sends;
(4) judge in the transmission sign indicating number of main frame whether gating signal is arranged,, then enter step (6),, then enter step (5) if having if do not have;
(5) judge in the transmission sign indicating number of main frame whether this machine plane No. is arranged,, then enter step (6) if do not have; If have, then enter step (7);
(6) by the parameter operation that from storer, is provided with; Return step (1) then;
(7) receive the data that main frame sends;
(8) judge whether the data that main frame sends are effective, if invalid, enter step (6), if effectively, enter following steps;
(9) by the data parameters operation that receives;
(10) the unit operation situation is sent to main frame; Return step (1) then.
9. network type air conditioner long-distance monitoring system according to claim 6 is characterized in that: described main frame is the PC that adopts band RS232 interface.
10. network type air conditioner long-distance monitoring system according to claim 6 is characterized in that: described main frame is to adopt the air conditioner that has RS485 principal and subordinate control interface controller.
11. network type air conditioner long-distance monitoring system according to claim 6, it is characterized in that: the UART single-chip microcomputer of described slave is by 485 chips, the light isolating chip is connected telecommunication cable one end with the RS485 interface, the other end of telecommunication cable inserts main frame by the 485-232 converter, and main frame links to each other with modulator-demodular unit by the RS232 interface.
12. network type air conditioner long-distance monitoring system according to claim 1, it is characterized in that: described slave computer is that the system of hybrid mode connects, both included the air conditioner of direct and upper machine communication, include the air conditioner cluster of principal and subordinate's group system structure again, described air conditioner cluster comprises the main frame of band microprocessor (CPU) and as the air conditioner of slave, adopts the RS485 serial communication between main frame and the slave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011418834A CN1181298C (en) | 2001-09-18 | 2001-09-18 | Network type air conditioner remote monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011418834A CN1181298C (en) | 2001-09-18 | 2001-09-18 | Network type air conditioner remote monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405508A CN1405508A (en) | 2003-03-26 |
| CN1181298C true CN1181298C (en) | 2004-12-22 |
Family
ID=4676459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011418834A Expired - Lifetime CN1181298C (en) | 2001-09-18 | 2001-09-18 | Network type air conditioner remote monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181298C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949279B (en) * | 2015-06-26 | 2018-02-09 | 珠海格力电器股份有限公司 | Method for displaying and synchronizing Fahrenheit temperature and air conditioning system |
| CN105207866B (en) * | 2015-10-26 | 2019-03-05 | 珠海格力电器股份有限公司 | Communication method of control terminal based on air conditioner control network and air conditioner control network |
-
2001
- 2001-09-18 CN CNB011418834A patent/CN1181298C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1405508A (en) | 2003-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1174196C (en) | air conditioner remote monitoring system with master-slave control function | |
| CN1710619A (en) | Wireless fire fighting detector network based on ZigBee and control method | |
| CN1968126A (en) | Remote monitoring central air conditioning unit and grouping control method | |
| CN1845519A (en) | Integrative intelligent system of digitization community | |
| CN1848660A (en) | Method for testing and regulating fan rotating speed in alignment of air conditioner new products system | |
| CN1174197C (en) | Remote monitoring system for air conditioner | |
| CN1181298C (en) | Network type air conditioner remote monitoring system | |
| CN2831281Y (en) | Radio fire fighting probes network system based on ZigBee | |
| CN1753407A (en) | Communication adapter | |
| CN1776994A (en) | New-type switching method for tele mechanical host-standby communication | |
| CN1780210A (en) | Remote monitoring household appliance | |
| CN101618813B (en) | Elevator control device capable of running by being in parallel connected with elevators of other brands | |
| CN2699181Y (en) | remote monitoring air conditioner with image transmission function | |
| CN1855856A (en) | Household electrical appliance network system | |
| CN1295389A (en) | Central monitor system of mobile telecommunication base station | |
| CN1190925C (en) | Universal serial bus synthesizer and synthesis method | |
| CN1061806C (en) | Centralized operation and maintenance system of program-controlled exchanger | |
| CN1819535A (en) | Industrial Ethernet frequency converter and utilization thereof | |
| CN2789858Y (en) | Remote monitoring household appliance system | |
| CN2772131Y (en) | Remote monitoring household appliance | |
| CN1627282A (en) | Method and equipment for carrying out synchronous data communication between one or more mobile terminals and computer | |
| CN2676153Y (en) | Wireless centralized meter reading device | |
| CN1084705C (en) | Transmission device for elevator signal | |
| CN2739698Y (en) | Portable network type keyboard/screen/mouse adapting device | |
| CN2645352Y (en) | Uninterrupted power source multiple machine centralization monitoring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20041222 |