CN201071639Y - Wireless electric control lock - Google Patents
Wireless electric control lock Download PDFInfo
- Publication number
- CN201071639Y CN201071639Y CNU2007200540861U CN200720054086U CN201071639Y CN 201071639 Y CN201071639 Y CN 201071639Y CN U2007200540861 U CNU2007200540861 U CN U2007200540861U CN 200720054086 U CN200720054086 U CN 200720054086U CN 201071639 Y CN201071639 Y CN 201071639Y
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Abstract
The utility model provides a wireless electrically controlled lock which adopts the wireless communication mode to transfer the state of the lock and the control command, has the functions of state signal feedback, lock logic control and operation prompt and has the difficult occurrence of the misoperation and high safety performance. The utility model adopts the technical proposal that: the wireless electrically controlled lock comprises a lock body, a lock pin, an electrically controlled element and a control circuit; a concave cavity to place the electrically controlled element and the control circuit and a through slot which can allow the lock pin to move up and down are arranged on the lock body, a wireless receiving and sending circuit which can carry out the data communication with an external controller and an antenna are arranged on the control circuit, the wireless receiving and sending circuit is electrically connected with other parts of the control circuit, and the two are commonly arranged in a shell body of the wireless electrically controlled lock.
Description
Technical field
The utility model relates to a kind of wireless electric-controlled lock, relates in particular to a kind of power system and is used to prevent electric misoperation and the electric control lock with radio communication function of locking operational outfit.
Background technology
Electric power " five anti-" block sytem be China's power system to preventing a kind of control system of back brake maloperation in power plant, the transformer station's power transmission and transformation process, mainly be to prevent mistakenly entering charged chamber, prevent mistake drawing switch, prevent on-load drawing disconnecting link, prevent charged hanging ground-wire, prevent switching on earth wire with technological means.The back brake maloperation repeats to cause major accident in power system over the years, and therefore preventing the back brake misoperation fault is one of key that concerns power transmission and transformation safety.At present, operating mechanisms such as ground wire in substation stake, net door and disconnecting link adopt " five is anti-" padlock form to realize locking mostly, have in addition do not have a blocking mechanism, artificial direct control.The manually-operated mode of this employing, though logical device controls such as computer key are arranged, but human factor is bigger, maloperation still appears easily, particularly in carrying out the emergency release operating process, because of having removed the logic control process of equipment, fully by manually judging, easier the misoperation fault that human factor causes appears.Simultaneously, owing to there is not the feedback signal of blocking, the feed back on-site operational circumstances makes the master-control room operating personnel can't understand the execute-in-place equipment running status, the operating sequence of also uncontrollable execute-in-place equipment in real time.
Improvement and development along with technology, the part blocking element has adopted electric control lockset, but the electric control lockset that uses all is to adopt wired control mode at present, even the control signal with the status signal of cable transmission electric control lockset and release, locking exists installation and maintenance complicated, need pipeline installation or bury cable underground, cost is higher, there is certain difficulty in the transformation of old station,, electric control lockset difficulty more is installed especially to the position of some more difficult cable layings.For example, the patent No. for " a kind of electric control lockset " of " 200420102291.7 " though design scheme can solve real-time control problem, but owing to adopt wired connected mode, need cable laying at the scene, and for the electric fixtures of special mounting position, abandon using electric control lockset owing to cable can't be installed, make that real-time locking is incomplete.
So existing like product has the following disadvantages: need on-the-spot cable laying, increased the engineering construction cost, because cable reaches the equipment room of non-tight protection out of doors and uses, be subjected to animal infringements such as mouse easily, and damage such as aging, interference, increased maintenance workload, can't cable laying and can't use electric control lock in the special mounting position, can not satisfy the complete atresia requirement.
The utility model content
Technical problem to be solved in the utility model is the deficiency that overcomes on the prior art, provide a kind of employing wireless communication mode to transmit lockset state and control instruction, what have status signal feedback, latching logic control, operation indicating function is not prone to maloperation, wireless electric-controlled lockset that security performance is high.
The technical scheme that the utility model adopted is:
A kind of wireless electric-controlled lock includes lock body, lock pin, electric control element, control circuit; Described lock body is provided with places electric control element and the cavity of control circuit and the groove that lock pin is moved up and down, described control circuit is provided with the wireless transceiver circuit and the antenna that can carry out data communication with peripheral control unit, and other parts of described wireless transceiver circuit and control circuit are electrically connected and are arranged at jointly in the housing of described wireless electric-controlled lock.
Comprise handle on the described lock pin, spring, spacer pin, locking bar, sensing element, an end of described locking bar is provided with handle, the bottom of described handle is run through locking bar and is provided with spacer pin, the bottom locking bar of described spacer pin is provided with the groove that can block the electric control element bearing pin, and the boss that the bottom locking bar of described groove is provided with spring and can stops spring to eject, the least significant end of described locking bar grow lock body and can be stuck on institute's interlock; Described spring centre is passed locking bar and is fixed in the spring cavity of lock body, utilizes the elastic force of spring to release lock body to lock pin, reaches the purpose of interlock.
Also include boss, positioning table, antenna, indicator lamp, battery case and installing hole on the described lock body, wide centre, described groove two ends is narrow, the one end is provided with the cavity of placing spring, and the other end has can be by the cavity of spacer pin, and described lock pin places the centre of groove also removable.
Described control circuit includes code detection module, electric control element detection module, position signalling detection module, microprocessor CPU circuit, memory, electric control element drive circuit, wireless transceiver circuit, antenna, indicating circuit and power module, described code detection module, electric control element detection module, position signalling detection module, memory, electric control element drive circuit, wireless transceiver circuit and indicating circuit are connected with the microprocessor CPU circuit, described antenna is connected with wireless transceiver circuit, and described power module is connected with above-mentioned each module.
In the microprocessor CPU circuit, adopted the control module of low-power sleep state.
The beneficial effects of the utility model are: wireless electric-controlled lock of the present utility model is as the vitals on the power equipment anti-misoperation locking, owing to be provided with wireless transceiver circuit, can constitute wireless network locking control system with peripheral control unit easily, reach the purpose of real-time detection and control interlock.Because adopted electric control element and location status testing circuit, and the microprocessor CPU circuit, can make the release, the blocking function that the utlity model has automatic control, and to release, locking and institute's interlock status detection function.Owing in the microprocessor CPU circuit, adopted the control mode of low-power sleep state, can reduce requirement to electric power.The course of work of the present utility model is: described electric control element could move after peripheral control unit sent the release radio signal, regain bearing pin, this moment, the site operation personnel just can extract the wireless electric-controlled handle of locking, drive lock pin and leave institute's interlock, in the time of on the spacer pin on the lock pin arrives boss, rotating counterclockwise handle stops up to the spacer pin platform that is positioned, be in the unlocked position this moment, because being stopped by boss, spacer pin make sale not withdraw, can remove locking thus to described interlock, if do not receive the unlocking signal that described peripheral control unit sends, then can not release, the scene can't be operated institute's interlock, so maloperation can not occur; Because the utility model is provided with sensing element and suitable with the lock pin position detecting switch on lock pin, after lock pin is pulled out and is placed in unlocked position, sensing element and lock pin position detecting switch be adaptive to provide the unlocked position signal that puts in place, this signal sends to peripheral control unit by described wireless transceiver circuit after via the microprocessor CPU processing of circuit, makes peripheral control unit obtain this electric control lock released state information; The site operation personnel is when operating equipment, since move the making of equipment be arranged on the equipment the equipment sensing element be arranged on the wireless electric-controlled device location sense switch of locking and separate, make the do not reentry signal of described device location sensing element of described device location sense switch, this signal sends to peripheral control unit by described wireless transceiver circuit after via the microprocessor CPU processing of circuit, make peripheral control unit obtain interlock not in the status information of lock position, can not send electricity this moment to equipment, can prevent the maloperation of hot line job equipment.Behind the site plant end of operation, the site operation personnel will lock described wireless electric-controlled lock again, when equipment arrives the lock position, sensing element on the equipment and the wireless electric-controlled device location sense switch of locking are suitable, this sense switch sends the interlock signal that puts in place to the microprocessor CPU circuit, and sends to peripheral control unit by wireless transceiver circuit; At this moment, operating personnel's turning handle makes lock pin because the effect of spring is inserted by interlock, sensing element on the lock pin has left the investigative range of lock pin position detecting switch, and the microprocessor CPU circuit obtains the lockup state signal and sends to peripheral control unit by wireless transceiver circuit; Peripheral control unit is after acquisition equipment reaches lock position and wireless electric-controlled lock and finishes lock operation, show on-the-spot operational outfit end of operation and locking again, this moment, this site plant just can drop into transmission operation, if described peripheral control unit does not obtain the locking signal of wireless electric-controlled lock, just can not send electric operation, so the utility model can carry out long-range locking control and live signal feedback efficiently and accurately, avoided because the incorrect misoperation fault that causes of human factor and feedback takes place, the security performance height, real-time.
Description of drawings
Fig. 1 is the structural representation of a kind of wireless electric-controlled lock of the utility model;
Fig. 2 is the control circuit schematic diagram of a kind of wireless electric-controlled lock of the utility model;
Fig. 3 is the peripheral control unit example schematic of a kind of wireless electric-controlled lock of the utility model;
Fig. 4 is the released state structural representation of a kind of wireless electric-controlled lock of the utility model;
Fig. 5 is the blocking structural representation of a kind of wireless electric-controlled lock of the utility model;
Fig. 6 is the electrical principle schematic diagram that a kind of wireless electric-controlled lock of the utility model and peripheral control unit are formed closed-loop system;
Fig. 7 is the lock pin detent position structural representation of a kind of wireless electric-controlled lock of the utility model;
Fig. 8 is the low-power consumption electrical schematic diagram of a kind of wireless electric-controlled lock of the utility model.
The specific embodiment
As shown in Figure 1, 2, a kind of wireless electric-controlled lock includes lock body 1, lock pin 16, electric control element 3, control circuit 4; Described lock body is provided with places electric control element 3 and the cavity of control circuit 4 and the groove that lock pin 16 is moved up and down, described control circuit 4 is provided with the wireless transceiver circuit 43 and the antenna 20 that can carry out data communication with peripheral control unit, and described wireless transceiver circuit 43 is electrically connected and is arranged at jointly in the housing of described wireless electric-controlled lock with other parts of control circuit.
Also include boss 15, positioning table 17, antenna 20, indicator lamp 7, battery case 19 and installing hole 2 on the described lock body, wide centre, described groove two ends is narrow, the one end is provided with the cavity of placing spring 11, the other end has can be by the cavity of spacer pin 12, and described lock pin 16 places the centre of groove also removable.
Described control circuit includes lock pin position detecting circuit 41, device location testing circuit 42, wireless transceiver circuit 43, microprocessor CPU circuit 44, electric control element drive circuit 47, indicating circuit 46, power module 45 and antenna 20, described lock pin position detecting circuit 41, device location testing circuit 42, electric control element drive circuit 47, wireless transceiver circuit 43 and indicating circuit 46 are connected with microprocessor CPU circuit 44, described antenna 20 is connected with wireless transceiver circuit 43, and described power module 45 is connected with above-mentioned each circuit.
Described controller circuitry is arranged in the described lock body, it is inner or outside that described antenna 20 is arranged on lock body, described power module 45 is battery 18 or voltage changer, described indicating circuit 46 is sounding component or light-emitting component, described lock pin position detecting circuit 41 comprises sensing element and inductive switch, and described sensing element adopts touch switch or contactless optical electric switch or Hall switch.
Described electric control element 3 includes telescopic bearing pin 6 and executing agency, and described bearing pin 6 is driven by executing agency and moves back and forth, and the executing agency of described electric control element 3 is solenoid or stepper motor.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, the utility model comprises wireless electric-controlled lock body 1 and interlock 9, described wireless electric-controlled lock body 1 and described locking lockset 9 are suitable, it also comprises peripheral control unit 8, and described wireless electric-controlled lock includes lock body 1, lock pin 16, electric control element 3, control circuit 4, spring 11; Also include boss 15 on the described lock body 1, positioning table 17, antenna 20, indicator lamp 7, battery case 19 and installing hole 2, comprise handle 5 on the described lock pin 16, spring 11, spacer pin 12, sensing element 13, one end of described lock pin 16 is provided with handle 5, the bottom of described handle 5 is run through lock pin and is provided with spacer pin 12, the bottom lock pin of described spacer pin 12 is provided with the groove that can block electric control element bearing pin 6, the boss that the bottom lock pin of described groove is provided with spring 11 and can stops spring to eject, the least significant end of described lock pin grow lock body 1 and can be stuck on the jack 10 of institute's interlock 9; Described spring 11 centres are passed lock pin and are arranged in the spring cavity of lock body 1, utilize the elastic force of spring to release lock body to lock pin, reach the purpose of interlock.
As shown in Figure 3, peripheral control unit 8 includes wireless transceiver circuit 81 and microcontroller circuit 82, and antenna 83 is connected with wireless transceiver circuit 81.
Described control circuit 4 includes lock pin position detecting circuit 41, device location testing circuit 42, wireless transceiver circuit 43, microprocessor CPU circuit 44, electric control element drive circuit 47, indicating circuit 46, power supply 45 and antenna 20, described lock pin position detecting circuit 41, device location testing circuit 42, electric control element drive circuit 47, wireless transceiver circuit 43 and indicating circuit 46 are connected with microprocessor CPU circuit 44, described antenna 20 is connected with wireless transceiver circuit 43, and described power module 45 is connected with above-mentioned each circuit.
Described controller circuitry 4 is arranged in the described lock body 1, described antenna 20 is arranged on the lock body outside, described power module 45 is battery 18 or voltage changer, and described indicating circuit is sounding component or light-emitting component, and described position detecting module comprises sensing element and inductive switch.Described sensing element adopts touch switch or contactless optical electric switch or Hall switch.
Described electric control element includes telescopic bearing pin 6 and executing agency, and described bearing pin 6 is driven by executing agency and moves back and forth, and described electric control element is solenoid or stepper motor.
Course of action of the present utility model is: owing to be provided with wireless transceiver circuit 43, can constitute wireless network locking control system with peripheral control unit 8 easily, reach the purpose of real-time detection and control interlock 9, see Fig. 6.
Releasing process: as Fig. 3, Fig. 4, shown in Figure 6, after peripheral control unit 8 sends the release radio command, antenna 20 received signals of wireless electric-controlled lock are passed to wireless transceiver circuit 43, after being transformed into data signal, pass to microprocessor CPU circuit 44, through decoding with after judgement is unlock command, start to do signal and drive electric control element 3 actions to electric control element drive circuit 47, regain bearing pin 6, this moment, the site operation personnel just can extract the wireless electric-controlled handle of locking 5, drive lock pin 16 and leave institute's interlock 9, when the spacer pin on the lock pin 16 12 arrives on the boss 15, rotating counterclockwise handle 5 stops up to spacer pin 12 platform 17 that is positioned, be in the unlocked position this moment, because being stopped by boss 15, spacer pin 12 makes that selling 16 can not withdraw, can remove locking thus to described interlock 9, if do not receive the unlock command that described peripheral control unit 8 sends, then can not release, because the bearing pin 6 of electric control element 3 is stuck in the effect of playing in the groove of lock pin 16 lock pin 16 lockings, lock pin 16 can't be pulled up, the scene can't be operated institute's interlock 9, so maloperation can not occur; Because the utility model is provided with sensing element 13 and suitable with lock pin position detecting switch 14 on lock pin 16, after lock pin 16 is pulled out and is placed in unlocked position, sensing element 13 triggers lock pin position detecting switch 14 and sends the unlocked position signal that puts in place, this signal is handled the back via microprocessor CPU circuit 44 and is sent to peripheral control unit 8 by described wireless transceiver circuit 43, makes peripheral control unit 8 obtain this electric control lock released state information; The site operation personnel is when operating equipment, since move the making of interlock 9 be arranged on the interlock 9 equipment sensing element 22 be arranged on the wireless electric-controlled device location sense switch of locking 21 and separate, make the do not reentry signal of position sensible element 22 of described interlock 9 of described device location sense switch 21, handle the back via microprocessor CPU circuit 44 and send to peripheral control unit 8 by described wireless transceiver circuit 43, make peripheral control unit 8 obtain interlocks 9 not in the status information of lock position, can not send electricity this moment to equipment, can prevent the maloperation of hot line job equipment.
Locking process:behind the site plant end of operation, the site operation personnel will lock described wireless electric-controlled lock again, when interlock 9 is operated the lock position, sensing element 22 on the interlock 9 is suitable with the wireless electric-controlled device location sense switch of locking 21, this position detecting switch 21 sends interlock 9 signal that puts in place to microprocessor CPU circuit 44, and sends to peripheral control unit 8 by wireless transceiver circuit 43; At this moment, the site operation personnel clockwise rotates handle 5 makes spacer pin 12 be stopped by another one positioning table 17, because boss 15 is provided with the groove isometric with spacer pin 12 in this position, can't stop spacer pin 12, make lock pin 16 under the effect of spring 11, be ejected lock body 1 and locking by interlock 9, sensing element 13 on the lock pin 16 has left the investigative range of lock pin position detecting switch 14, and microprocessor CPU circuit 44 obtains this status signal and sends to peripheral control unit 8 by wireless transceiver circuit 43; Peripheral control unit 8 is after obtaining interlock 9 and arriving lock positions and wireless electric-controlled lock and finish lock operation; Show field apparatus end of operation and again locking; At this moment; This field apparatus just can carry out transmission operation; If described peripheral control unit 8 does not obtain the locking signal of wireless electric-controlled lock; Just can not send electric operation; So the utility model can carry out long-range lock-in control and live signal feedback efficiently and accurately; Avoided because the incorrect misoperation fault that causes of human factor and feedback takes place
The low-power consumption power saving course of work:
Described controller circuitry 4 includes the control module of low-power sleep state, the circuit diagram of the control module of described low-power sleep state as shown in Figure 8, owing in the microprocessor CPU circuit, adopted the control mode of low-power sleep state, can reduce requirement to electric power.The circuit of described wireless low-power consumption module includes module data processing unit U1, data acquisition unit U2, data wireless transmitting element U3 and relevant peripheral components; U1 is the module data processing unit as the CPU of wireless low-power consumption module, is responsible for the operation and the low power consumption control of whole modular system; Interface between module data processing unit U1 and the data acquisition unit U2 is the I of standard
2The C bus.U1 receives sensing data and carries out analyzing and processing from U2, and data are sent to U3, via U3 data is sent.U2 is a data acquisition unit, measures by 5,6,7 pairs of outside quantity of states of its pin, and the interface between U1 and the U2 is the I of standard
2The C bus.When carrying out data acquisition, U1 is by the power supply of pin two 4 control G1 unlatching U2, and U1 passes through I then
2The C bus is sent data acquisition command to U2, allows U2 carry out the AD data transaction, and U1 passes through I again
2The C bus reads institute's data converted and handles from U2, and data are sent to U3 carries out wireless transmission.
When carrying out the data transmission, U1 is set to high level to pin 9, the VREG_EN of control U3 is changed to high level, open the internal electric source adjuster of U3 like this, U1 sends startup U3 crystal oscillator X2 instruction through the SPI interface of standard again, wait for the related work register of U3 back configuration working properly U3, destination address and working channel are set, U1 sends the data that data write U3 in the buffer area by the SPI interface more then, open U3 data sending function, U3 passes through data by inductance L 2, L3, L4 and capacitor C 14, C12, C16, the antenna-matching circuit that C15 forms sends, U1 is by detecting the state of U3 pin 30, judge whether the transmission of U3 data finishes, low level is that data send the U1 that finishes and wait for and the U3 data send the back that finishes by pin 9 VREG_EN to be set be that low level is closed U3, the U1 waiting timer triggers data acquisition next time and transmission then, and at this moment, wireless electric-controlled lock enters the low-power consumption battery saving mode.
Described peripheral control unit in the utility model can adopt existing five anti-host computer systems, only need use wireless electric-controlled lock as the locking lockset to get final product, and described microprocessor CPU and other electronic device can adopt existing technology and product.
Above-mentioned listed specific implementation is nonrestrictive, and concerning the person skilled in the art of this area, in not departing from the utility model scope, various improvement and the variation carried out all belong to protection domain of the present utility model.
Claims (7)
1. a wireless electric-controlled lock includes lock body (1), lock pin (16), electric control element (3), control circuit (4); Described lock body is provided with places electric control element (3) and the cavity of control circuit (4) and the groove that lock pin (16) is moved up and down, it is characterized in that, described control circuit (4) is provided with the wireless transceiver circuit (43) and the antenna (20) that can carry out data communication with peripheral control unit, and described wireless transceiver circuit (43) is electrically connected and is arranged at jointly in the housing of described wireless electric-controlled lock with other parts of control circuit.
2. a kind of wireless electric-controlled lock according to claim 1, it is characterized in that, comprise handle (5) on the described lock pin (16), spring (11), spacer pin (12), locking bar (24), sensing element (13), one end of described locking bar (24) is provided with handle (5), the bottom of described handle (5) is run through locking bar (24) and is provided with spacer pin (12), the bottom locking bar (24) of described spacer pin (12) is provided with the groove that can block electric control element bearing pin (6), and the boss that the bottom locking bar (24) of described groove is provided with spring (11) and can stops spring (11) to eject, the least significant end of described locking bar (24) grow lock body and can be stuck on institute's interlock; Described spring (11) centre is passed locking bar (24) and is fixed in the spring cavity of lock body.
3. a kind of wireless electric-controlled lock according to claim 2, it is characterized in that, also include boss (15), positioning table (17), antenna (20), indicator lamp (7), battery case (19) and installing hole (2) on the described lock body, wide centre, described groove two ends is narrow, the one end is provided with the cavity of placing spring (11), the other end has the cavity that can pass through spacer pin (12), and described lock pin (16) places the centre of groove also removable.
4. according to claim 1 or 2 or 3 described a kind of wireless electric-controlled locks, it is characterized in that, described control circuit includes lock pin position detecting circuit (41), device location testing circuit (42), wireless transceiver circuit (43), microprocessor CPU circuit (44), electric control element drive circuit (47), indicating circuit (46), power module (45) and antenna (20), described lock pin position detecting circuit, the device location testing circuit, the electric control element drive circuit, wireless transceiver circuit is connected with the microprocessor CPU circuit with indicating circuit, described antenna is connected with wireless transceiver circuit, and described power module is connected with above-mentioned each circuit.
5. a kind of wireless electric-controlled lock according to claim 4, it is characterized in that, described controller circuitry (4) is arranged in the described lock body, it is inner or outside that described antenna is arranged on lock body, described power module (45) is battery (18) or voltage changer, described indicating circuit is sounding component or light-emitting component, and described position detecting module comprises sensing element and inductive switch; Described sensing element adopts touch switch or contactless optical electric switch or Hall switch.
6. a kind of wireless electric-controlled lock according to claim 4, it is characterized in that, described electric control element includes telescopic bearing pin (6) and executing agency, and described bearing pin (6) is driven by executing agency and moves back and forth, and the executing agency of described electric control element is solenoid or stepper motor.
7. a kind of wireless electric-controlled lock according to claim 4, it is characterized in that, described controller circuitry (4) includes the control module of low-power sleep state, and the circuit of described wireless low-power consumption module includes module data processing unit U1, data acquisition unit U2, data wireless transmitting element U3 and relevant peripheral components; U1 is the module data processing unit as the CPU of wireless low-power consumption module, is responsible for the operation and the low power consumption control of whole modular system; Interface between module data processing unit U1 and the data acquisition unit U2 is the I of standard
2The C bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200540861U CN201071639Y (en) | 2007-07-13 | 2007-07-13 | Wireless electric control lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200540861U CN201071639Y (en) | 2007-07-13 | 2007-07-13 | Wireless electric control lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071639Y true CN201071639Y (en) | 2008-06-11 |
Family
ID=39550196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200540861U Expired - Lifetime CN201071639Y (en) | 2007-07-13 | 2007-07-13 | Wireless electric control lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071639Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645650B (en) * | 2013-11-12 | 2017-02-15 | 上海索广映像有限公司 | Anti-error operation system |
| CN111503358A (en) * | 2019-01-30 | 2020-08-07 | 中国石油化工股份有限公司 | Valve integrated lock |
| CN112647769A (en) * | 2019-10-13 | 2021-04-13 | 九江精密测试技术研究所 | Mechanical locking device with electric limiting function |
-
2007
- 2007-07-13 CN CNU2007200540861U patent/CN201071639Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645650B (en) * | 2013-11-12 | 2017-02-15 | 上海索广映像有限公司 | Anti-error operation system |
| CN111503358A (en) * | 2019-01-30 | 2020-08-07 | 中国石油化工股份有限公司 | Valve integrated lock |
| CN111503358B (en) * | 2019-01-30 | 2022-07-15 | 中国石油化工股份有限公司 | Valve integrated lock |
| CN112647769A (en) * | 2019-10-13 | 2021-04-13 | 九江精密测试技术研究所 | Mechanical locking device with electric limiting function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |