CN201928255U - Household electronic appliance automation wire holder with sending data line management by serial port - Google Patents
Household electronic appliance automation wire holder with sending data line management by serial port Download PDFInfo
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- CN201928255U CN201928255U CN2010205318107U CN201020531810U CN201928255U CN 201928255 U CN201928255 U CN 201928255U CN 2010205318107 U CN2010205318107 U CN 2010205318107U CN 201020531810 U CN201020531810 U CN 201020531810U CN 201928255 U CN201928255 U CN 201928255U
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Abstract
The utility model discloses a household electronic appliance automation wire holder with sending data line management by a serial port, which belongs to an interface device of a computer and a household appliance. With the computer as a host, the household electronic appliance automation wire holder with sending data line management by the serial port detects the conditions of four switch quantity output type sensors, and four pairs of household electronic appliances automatically run. The household electronic appliance automation wire holder with sending data line management by the serial port comprises an RS 232C interface, a USB (universal serial bus) interface, a USB to serial port circuit, four pairs of sensor interface terminals, a RS232-TTL (transistor-transistor logic)/CMOS (complementary metal-oxide-semiconductor transistor) level switching circuit, a serial port output data to parallel data circuit CD4017, a data output enabling circuit 74HC373, a data latching circuit, four sets of electronic switch circuits, a voltage stabilized power circuit and a lightening-and-surge-preventing circuit, wherein CD, DSR, CTS and RI of the serial port respectively form the four pairs of sensor interface terminal with a power cathode by a pull-up resistor, and TXD, DTR and RTS are respectively connected to the clock signal input end and the reset end of CD4017 and the output enabling end of 74HC373 through the level switching circuit. Under management of DTR and RTS, TXD sends out command data, the data latching circuit and the followed electronic switch circuit are operated, and the four groups of household electronic appliances automatically run.
Description
Technical field
The utility model belongs to the application electric technology field, particularly relates to the interface arrangement of a kind of computer and home electronic appliance.
Background technology
Recently prepare to submit to the utility model patent home electronic appliance automation junction block of computer management " can " of Patent Office of State Intellectual Property Office examination to analyze and realized domestic electronic and the product of electrical automation operation and the situation of technology on the present domestic market, it all is main frame with the computer with the utility model of submitting examination recently to " the home electronic appliance automation junction block of serial port interconnection decoding type management " and " the household electrical appliance automation junction block of serial port interconnection power supply management ", four input interconnections by its RS232C interface, cooperate 4 Sensor of Switch-Output Type, automatically detect the respective conditions of external environment condition, two output interconnections by its RS232C interface move two pairs respectively, three pairs and no more than two domestic electronic or electrical equipment; Two of the front can also cooperate the operation of Sensor of Switch-Output Type control household electrical appliances independently, or are used as common supply socket and use, and the 3rd power supply is taken from the output interconnection of the serial port of computer, does not need to dispose voltage-stabilized power supply circuit.
The utility model content
The purpose of this utility model is to provide a serial port to send the home electronic appliance automation junction block of data wire management, it is main frame with the computer, four input interconnections by serial port detect the variation of the state of the situation of 3 Sensor of Switch-Output Type and 1 transducer, move 4 groups of domestic electronics or electrical equipment; Comprise: 9 pin RS232C interfaces, USB interface, USB change serial port circuit, 4 pairs of sensor interface terminals, RS232 → TTL/CMOS level shifting circuit, serial ports dateouts and change parallel data circuit, data output enable circuit, data-latching circuit, 4 groups of electronic switching circuits, voltage-stabilized power supply circuit, anti-lightning strike and surge circuit and supply main and plug thereof.
The technical scheme that its technical problem that solves the utility model adopts is:
USB interface is connected to the corresponding signal input part that USB changes the serial port circuit, the corresponding port line parallel of the latter's signal output part and RS232C interface; The first pin CD of RS232C interface, the 6th pin DSR, the 8th pin CTS are connected a pull-up resistor respectively to positive source with nine kinds of needles RI, and this four pin and power cathode have constituted 4 pairs of sensor interface terminals respectively; The 3rd pin TXD of RS232C interface, the 4th pin DTR, the 7th pin RTS are connected respectively to the signal input part of RS232 → TTL/CMOS level shifting circuit separately, then, the corresponding signal output part of this level shifting circuit is connected respectively to the output enable end that the serial ports dateout is changeed the clock signal input terminal of parallel data circuit and clear terminal, data output enable circuit again; Serial ports dateout commentaries on classics parallel data circuit is made up of decimal system Yue Shi counter CD4017, and its clock Enable Pin ground connection is in effective status; Data output enable circuit is made up of 74HC373, and it latchs permission termination power positive pole, is in effective status; Data-latching circuit is made up of 4 d type flip flops, and their clock signal input terminal and D end are all received the negative pole of power supply; 88 data inputs that are connected respectively to 74HC373 in ten terminal count outputs of CD4017,8 data outputs of 74HC373 connect a pull down resistor respectively to power cathode, and what these 8 data outputs also were connected respectively to 4 d type flip flops puts 1 end S and reset terminal R; The output Q of 4 d type flip flops is connected respectively to the signal input end of electronic switching circuit separately; The ac input end of voltage-stabilized power supply circuit is received civil power with anti-lightning strike in parallel with the surge circuit by supply main and plug thereof, and the output negative pole of voltage-stabilized power supply circuit links to each other with the 5th pin GND of RS232C interface.
Described voltage-stabilized power supply circuit is made up of power transformer, diode bridge rectifier circuit, capacitor filter and circuit of three-terminal voltage-stabilizing integrated 7806, and two outputs of 7806 have constituted the positive source and the power cathode of this device respectively.
Described anti-lightning strike the polyphone by a fuse and a piezo-resistance with the surge circuit formed.
Described RS232 → TTL/CMOS level shifting circuit is divided into three the tunnel, and the structure on each road is identical, comprising: triode, base resistance, collector resistance, schmitt inverter and working station indicator circuit; Wherein, one end of base resistance is as the signal input part of this road level shifting circuit, the other end is connected to the base stage of triode, the collector electrode of positive source and collector resistance, triode, emitter and power cathode are formed series circuit, the collector electrode of triode is also connected to the input of schmitt inverter, and the output of schmitt inverter is as the signal output part of this road level shifting circuit; The working station indicator circuit comprises a current-limiting resistance and a light-emitting diode, receives the output of schmitt inverter to its negative pole series connection from the positive pole of positive source, current-limiting resistance, light-emitting diode.
The structure of described 4 groups of electronic switching circuits is identical, comprises separately: No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit.
Described alternating current electronic switching circuit comprises: 1 NPN triode, 1 PNP triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance, 1 current limliting collector resistance and a solid-state relay; Wherein, the base stage of one termination NPN triode of base resistance, the other end closes the signal input end of circuit as this electronics sweat, base biasing resistor is connected in parallel on the emitter junction of PNP triode, the emitter of this PNP triode connects positive source, collector resistance of its base stage series connection is connected to the collector electrode of NPN triode, the emitter of NPN triode is connected to power cathode, current limliting of the collector electrode of PNP triode series connection is connected to the positive pole in the signal input end of solid-state relay with collector resistance, the negative pole in the signal input end of solid-state relay is connected to power cathode; Two outputs of solid-state relay constitute the output of this alternating current electronic switching circuit.
Described light current electronic switching circuit comprises: triode and base resistance, a diode, a light-emitting diode and a direct current relay; Wherein, the base stage of one termination triode of base resistance, the other end is as the signal input end of this electronic switching circuit, the emitter of triode is connected to power cathode, its collector electrode is connected to the negative pole of light-emitting diode, the positive pole of light-emitting diode is connected respectively to an end of the coil of the positive pole of diode and direct current relay, and the other end of the negative pole of diode and the coil of direct current relay all is connected to positive source; Six terminals of two pairs of single-pole double-throw switch (SPDT)s of direct current relay have constituted the output of this light current electronic switching circuit.
The utility model has constituted the interface between computer and the home electronic appliance, under the management of computer software, cooperate multiclass sensor work, comprise: output signal be the switching value type ,+3V～+ the level type of 15V or the transducer of pulse signal type or resistance saltus step type, help detecting and automatic domestic electronic or the household electrical appliance that are connected that move, and the combination of transducer and household electrical appliances is adapted to multiple occasion; Its advantage is: under the output interconnection DTR of serial port cooperates, utilize the serial data transmitting terminal TXD of computer serial port to send out correct binary data, use the control line of the output interconnection RTS of serial port, manage 4 groups of electronic switching circuits as dateout.
Description of drawings
Below in conjunction with accompanying drawing, further specify the utility model.
Fig. 1 is the functional-block diagram of sensor interface circuitry and voltage-stabilized power supply circuit.
Fig. 2 is the schematic diagram of RS232 → TTL/CMOS level shifting circuit.
Fig. 3 is the schematic diagram that the serial ports dateout is changeed parallel data circuit, data output enable circuit, data-latching circuit.
Fig. 4 is the schematic diagram of one group of electronic switching circuit.
Among the figure, 1.-4. electronic switching circuit, 5. voltage-stabilized power supply circuit, 51. anti-lightning strike and surge circuit, 6.USB interface, 7.USB change the serial port circuit, the 8.RS232C interface, 21. serial ports dateouts are changeed the parallel data circuit, 22. data output enable circuit, 23.-26. data-latching circuit, 31. single-pole double throw direct current electromagnetic relays, 32. solid-state relay SSR.
Embodiment
The transmission range of the RS232C interface of computer can reach 15 meters, and transmission rate can reach 19200baud, the corresponding level+3V of logical zero～+ 15V, the corresponding level-3V of logical one～(15) V.Therefore, as shown in Figure 1, adopt pull-up resistor R1, R2, R3, R4 and transducer Rs1, Rs2, Rs3, the mode of Rs4 ground connection has constituted the interface circuit of transducer, the signal that comes the detecting sensor sense events to be exported by the event attribute of serial communication control MSComm32.OCX adapts to multiclass sensor work, comprising: output signal be switching mode ,+3V～+ the level type of 15V or the transducer of pulse signal type or resistance saltus step type.
The event attribute of serial communication control MSComm32.OCX comprises:
1ComEvSend: the number of characters in the transmission register also lacks than Sthreshold;
2ComEvReceive: receive Sthreshold character, this incident continues to produce up to removing from receiving register with the Input attribute;
The state of 3ComEvCTS:Clear_to_Send line changes;
The state of 4ComEvDSR:Data_Set_Ready line changes to 0 from 1;
The state of 5ComEvCD:Carrier_Detect line changes;
6ComEvRing: detect bell signal, but, the attribute MSComm32.CTSholding/.DSRholding/.DCDholding that does not possess the serial communication control can't inquire about the height situation that detects its level, and some UART (asynchronous reception-transmitter) may not support this incident;
7ComEvEOF: receive the end of data (ASCII is 26) character.
Generally speaking, the working power of family expenses transducer is＜DC power supply of 15V, be operated in indoor, so Fig. 1 does not consider at transducer Rs1, Rs2, Rs3, arrangement photoelectricity coupling circuit is made electrical isolation between Rs4 and the RS232C interface, has reduced cost.But, in order to take precautions against the thunderbolt or the destruction of surge current, be parallel with anti-lightning strike and surge circuit (51) at the input of civil power.
Wherein, the method for the pressure sensitive voltage of estimation piezo-resistance is: V1mA=1.5V
P=1.5 * 220V=476V, V1mA=2.2VAC=2.2 * 220V=484V, so the puncture voltage of piezo-resistance is selected 470-480V, its discharge capacity selects 2-20KA.The specification of fuse is looked the rated operational current sum of the solid-state relay SSR (32) (referring to Fig. 4) that is adopted in electronic switching circuit (1)-(4) and is determined.
For example, the input control voltage of the JGX-10F solid-state relay of Beijing section energising electric relay head factory production is DC3.2～14V, and the representative value of input current is 5～20mA (VDC=5V), and its rated output voltage is AC25～250V, output-current rating is 10A, is enough to drive 1 air-conditioning.
Corresponding level+the 3V of the logical zero of the RS232C interface of computer～+ 15V, the corresponding level-3V of logical one～(15) V, and its follow-up HCMOS, the operating voltage of cmos circuit is respectively: 2V-6V and 3V-15V (4500B)-18V (4000B).Therefore, as shown in Figure 2, adopt triode to design RS232 → TTL/CMOS level shifting circuit.For example, RTS is when for " 1 " time, the emitter junction of triode T3 is in serious reverse bias voltage state, not conducting, its collector electrode is near supply voltage VCC=6V, through the anti-phase TTL/CMOS low level " 0 " that become later of schmitt inverter, and when RTS works as for " 0 ", its voltage+3V～+ 15V is enough to turn-on transistor T3, its collector electrode is near the power cathode level, later become TTL/CMOS high level " 1 " through schmitt inverter is anti-phase, realized RS232 → TTL/CMOS level conversion.Light-emitting diode is luminous when schmitt inverter is output as high level, feasible in the operating state case indication lamp circuit shown in Figure 2.But consider that the CMOS inverter irritates current driving ability much larger than its high-level output current driving force, it is luminous that connection preferably is output as low level the time light-emitting diode forward conduction at inverter.
Fig. 3 is the circuit theory diagrams that the serial ports dateout is changeed parallel data circuit (21), data output enable circuit (22), data-latching circuit (23), (24), (25) and (26).
The serial ports dateout is changeed parallel data circuit (21) and is made up of decimal system Yue Shi counter CD4017, and its clock Enable Pin ground connection is in effective status, and its clock pulse signal input part is that just to jump the limit effective.If the delivery outlet line DTR=" 1 " of RS232C interface becomes TTL/CMOS high level " 1 " later on through RS232 → TTL/CMOS level shifting circuit, make CD4017 reset: Q0=1, Q1～Q9=0.Then, a control serial data transmission mouthful line TXD can be a high level so that needed state: one of Q0Q1～Q9 appears in the output of CD4017.
Serial port sends line and is in high level at ordinary times, the information format of asynchronous serial communication is: " character+parity check bit of (1 low level) start bit+transmission+(1,1.5 or 2 high level) position of rest ", this promptly can accomplish by the Settings attribute of revising serial communication control MSComm32.OCX.For example, its default parameter value is " 9600, N, 8,1 ", and the meaning is " employed communication port is not done parity check with the speed transmission of per second 9600Bit, and each data cell is 8 Bit, and position of rest is 1 Bit ".Use following order also can realize this attribute: MSComm1.Settings=" 9600, n, 8,1 ".When program need transfer out a character string, use the Output attribute of control MSComm32.OCX that character string is write in the output register, for example: MSComm1.Output=" ABCDE " ', this is about to five characters of ABCDE and sends out in regular turn by the RS232C interface.Consider that its front of character of every transmission is superimposed with a low level beginning flag position, we select to transmit letter " B ", and its ASCII character is " 42H=01000010B ", therefore, the each transmission, the waveform that serial port line TXD sends is:
Can produce 3 rising edge positive transition pulses; And transmit letter " A "=" 41H=01000001B ", the waveform that serial port line TXD sends is:
Only produce 2 rising edge positive transition pulses.So, the output that CD4017 is set earlier is cleared condition: Q0Q1～Q9=10～0, transmit several letters " B " more continuously, can make the output of CD4017 produce high level successively, its situation is: Q1 → Q2 → Q3, Q4 → Q5 → Q6, Q7 → Q8 → Q9, Q0 → Q1 → Q2, Q3 → Q4 → Q5, Q6 → Q7 → Q8, Q9 → Q0 → Q1, Q2 → Q3 → Q4, Q5 → Q6 → Q7 and Q8 → Q9 → Q0 can realize the requirement of " making one of the output Q0Q1～Q9 of the appointment of CD4017 high level occur ".
It latchs permission termination power positive pole data output enable circuit (22) 74HC373, be in effective status, at any time the data in the said process have been deposited, but, have only when working as " needed high level appears in one of output Q0Q1～Q9 of the appointment of CD4017 ", it is effective to allow serial port output interconnection RTS become low level, makes the output enable end of 74HC373 later on through RS232 → TTL/CMOS level shifting circuit
Effectively, its last effective control data of depositing is exported to the control corresponding end of data-latching circuit (23)-(26) of back.8 control ends of data-latching circuit (23)-(26) have only one to be in the high level effective status each time, or put 1 end or clear terminal effective, guaranteed correct the starting or stoping of 4 groups of electronic switching circuits (1)-(4) of back.
The output enable end of 74HC373
In the time of invalid, its 8 outputs present high-impedance state, but, the RS control end of data-latching circuit (23)-(26) is connected to a pull down resistor separately to power cathode, therefore make each RS control end all be in low level disarmed state, data-latching circuit (23)-(26) keep original state constant.
Data output enable circuit (22) also can adopt for example 74HC244 of ternary buffering driver.Data-latching circuit (23)-(26) can be made up of 4 d type flip flops, also can use rest-set flip-flop instead.
In the use, an end of the present utility model connects the USB or the RS232C interface of computer by cable, the other end inserts commercial power socket by power line, as the power patch panel of family use at ordinary times electrical equipment is inserted corresponding socket, and 4 pairs of transducers then connect by binding post.
To the unfamiliar people of transducer, can be temporarily no matter it, the operation computer program just can managing electronic or the operation of electrical equipment.
Claims (7)
1. serial port sends the home electronic appliance automation junction block of data wire management, it is characterized in that, comprising: 9 pin RS232C interfaces, USB interface, USB change serial port circuit, 4 pairs of sensor interface terminals, RS232 → TTL/CMOS level shifting circuit, serial ports dateouts and change parallel data circuit, data output enable circuit, data-latching circuit, 4 groups of electronic switching circuits, voltage-stabilized power supply circuit, anti-lightning strike and surge circuit and supply main and plug thereof; Wherein, USB interface is connected to the corresponding signal input part that USB changes the serial port circuit, the corresponding port line parallel of the latter's signal output part and RS232C interface; The first pin CD of RS232C interface, the 6th pin DSR, the 8th pin CTS are connected a pull-up resistor respectively to positive source with nine kinds of needles RI, and this four pin and power cathode have constituted 4 pairs of sensor interface terminals respectively; The 3rd pin TXD of RS232C interface, the 4th pin DTR, the 7th pin RTS are connected respectively to the signal input part of RS232 → TTL/CMOS level shifting circuit separately, then, the corresponding signal output part of this level shifting circuit is connected respectively to the output enable end that the serial ports dateout is changeed the clock signal input terminal of parallel data circuit and clear terminal, data output enable circuit again; The serial ports dateout is changeed the parallel data circuit and is made of its clock Enable Pin ground connection decimal system Yue Shi counter CD4017; Data output enable circuit is made up of 74HC373, and it latchs permission termination power positive pole; Data-latching circuit is made up of 4 d type flip flops, and their clock signal input terminal and D end are all received the negative pole of power supply; 88 data inputs that are connected respectively to 74HC373 in ten terminal count outputs of CD4017,8 data outputs of 74HC373 connect a pull down resistor respectively to power cathode, and what these 8 data outputs also were connected respectively to 4 d type flip flops puts 1 end S and reset terminal R; The output Q of 4 d type flip flops is connected respectively to the signal input end of electronic switching circuit separately; The ac input end of voltage-stabilized power supply circuit is received civil power with anti-lightning strike in parallel with the surge circuit by supply main and plug thereof, and the output negative pole of voltage-stabilized power supply circuit links to each other with the 5th pin GND of RS232C interface.
2. serial port according to claim 1 sends the home electronic appliance automation junction block of data wire management, it is characterized in that, described voltage-stabilized power supply circuit is made up of power transformer, diode bridge rectifier circuit, capacitor filter and circuit of three-terminal voltage-stabilizing integrated, and two outputs of circuit of three-terminal voltage-stabilizing integrated have constituted the positive source and the power cathode of this device respectively.
3. the home electronic appliance automation junction block of serial port interconnection decoding type management according to claim 1 is characterized in that, described anti-lightning strike the polyphone by a fuse and a piezo-resistance with the surge circuit formed.
4. serial port according to claim 1 sends the home electronic appliance automation junction block of data wire management, it is characterized in that, described RS232 → TTL/CMOS level shifting circuit is divided into three the tunnel, the structure on each road is identical, comprising: triode, base resistance, collector resistance, schmitt inverter and working station indicator circuit; Wherein, one end of base resistance is as the signal input part of this road level shifting circuit, the other end is connected to the base stage of triode, the collector electrode of positive source and collector resistance, triode, emitter and power cathode are formed series circuit, the collector electrode of triode is also connected to the input of schmitt inverter, and the output of schmitt inverter is as the signal output part of this road level shifting circuit; The working station indicator circuit comprises a current-limiting resistance and a light-emitting diode, receives the output of schmitt inverter to its negative pole series connection from the positive pole of positive source, current-limiting resistance, light-emitting diode.
5. serial port according to claim 1 sends the home electronic appliance automation junction block of data wire management, it is characterized in that, the structure of described 4 groups of electronic switching circuits is identical, comprises separately: No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit.
6. serial port according to claim 5 sends the home electronic appliance automation junction block of data wire management, it is characterized in that described alternating current electronic switching circuit comprises: 1 NPN triode, 1 PNP triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance, 1 current limliting collector resistance and a solid-state relay; Wherein, the base stage of one termination NPN triode of base resistance, the other end is as the signal input end of this electronic switching circuit, base biasing resistor is connected in parallel on the emitter junction of PNP triode, the emitter of this PNP triode connects positive source, collector resistance of its base stage series connection is connected to the collector electrode of NPN triode, the emitter of NPN triode is connected to power cathode, current limliting of the collector electrode of PNP triode series connection is connected to the positive pole in the signal input end of solid-state relay with collector resistance, the negative pole in the signal input end of solid-state relay is connected to power cathode; Two outputs of solid-state relay constitute the output of this alternating current electronic switching circuit.
7. serial port according to claim 5 sends the home electronic appliance automation junction block of data wire management, it is characterized in that described light current electronic switching circuit comprises: triode and base resistance, a diode, a light-emitting diode and a direct current relay; Wherein, the base stage of one termination triode of base resistance, the other end is as the signal input end of this electronic switching circuit, the emitter of triode is connected to power cathode, its collector electrode is connected to the negative pole of light-emitting diode, the positive pole of light-emitting diode is connected respectively to an end of the coil of the positive pole of diode and direct current relay, and the other end of the negative pole of diode and direct current relay coil all is connected to positive source; Six terminals of two pairs of single-pole double-throw switch (SPDT)s of direct current relay have constituted the output of this light current electronic switching circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205318107U CN201928255U (en) | 2010-09-16 | 2010-09-16 | Household electronic appliance automation wire holder with sending data line management by serial port |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205318107U CN201928255U (en) | 2010-09-16 | 2010-09-16 | Household electronic appliance automation wire holder with sending data line management by serial port |
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| CN201928255U true CN201928255U (en) | 2011-08-10 |
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| CN2010205318107U Expired - Fee Related CN201928255U (en) | 2010-09-16 | 2010-09-16 | Household electronic appliance automation wire holder with sending data line management by serial port |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447465A (en) * | 2010-10-11 | 2012-05-09 | 重庆工商大学 | Serial port TXD (Transmit Data) line managed automated connector base for 2<4N>/2 sets of household electronic and electrical appliances |
| CN109359079A (en) * | 2018-10-16 | 2019-02-19 | 福建实达电脑设备有限公司 | A kind of the simulation pull-plug device and method of automatic maintenance USB connection |
-
2010
- 2010-09-16 CN CN2010205318107U patent/CN201928255U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447465A (en) * | 2010-10-11 | 2012-05-09 | 重庆工商大学 | Serial port TXD (Transmit Data) line managed automated connector base for 2<4N>/2 sets of household electronic and electrical appliances |
| CN109359079A (en) * | 2018-10-16 | 2019-02-19 | 福建实达电脑设备有限公司 | A kind of the simulation pull-plug device and method of automatic maintenance USB connection |
| CN109359079B (en) * | 2018-10-16 | 2021-05-14 | 福建实达电脑设备有限公司 | Simulation plug-in device and method for automatically maintaining USB connection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20120916 |