CN206672202U - A kind of cell security protection control system - Google Patents
A kind of cell security protection control system Download PDFInfo
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- CN206672202U CN206672202U CN201720382284.4U CN201720382284U CN206672202U CN 206672202 U CN206672202 U CN 206672202U CN 201720382284 U CN201720382284 U CN 201720382284U CN 206672202 U CN206672202 U CN 206672202U
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- intercom
- personnel
- security protection
- control system
- signal
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Abstract
The utility model discloses a kind of cell security protection control system, solve the problems, such as that people is visited in intelligent intercom system not to stand before intercom and can not confirm to visit people, its drip irrigation device is, including personnel's detection means, starter, the logic door gear for being coupled to personnel's detection means and starter, the control device for being coupled to logic door gear；When personnel's detection means has detected visit person station in face of intercom and when starter exports enabling signal, the then current supply circuit closure of control device control intercom, cell security protection control system of the present utility model, so that only when the personnel of visit station is in face of intercom, startup intercom could be carried out by starter, who visit person facilitates owner to confirm is, improves the security of owner's house.
Description
Technical field
Safety-protection system is the utility model is related to, more particularly to a kind of cell security protection control system.
Background technology
With network technology, the development of computer technology and maturation, urbanization paces are gradually accelerated, and residential quarters are increasingly
It is more, while steadily improving with national income, people to the intelligent constructions of residential quarters it is also proposed that higher and higher requirement,
The intelligent construction of cell is as one of hot issue of current research；So-called intellectual communityintellectualized village, it is by communicating and calculating
Machine network, residential quarters safety and protection system, Property Management System, public service system, information system are connected, established
Integrated platform and information processing control centre, as the improvement of people's living standards, safety has become resident to residential quarters
Primary requirement, intelligent residential district safety-protection system is responsible for the responsibility of the safety of life and property of protective plot resident.
Current cell security protection control system mainly include periphery strick precaution, access control, guard monitor, electronic patrol,
Intelligent intercommunication, burglar alarm and urgent call etc.；Wherein intelligent intercom system is the safety-protection system comparatively generally used, but
It is in use, some drawbacks usually occur, such as after pressing the doorbell of intercom system, visit person but have left intercom
And cause owner can not be confirmed whether it is the people of understanding from display screen so that intelligent intercom system loses the effect of script, institute
With with certain room for improvement.
Utility model content
The purpose of this utility model is to provide a kind of cell security protection control system, and only visit person station is in face intercom
Intercom could be started during position to be rung the doorbell.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of cell security protection control system, including intercom, in addition to for detecting whether have visit person station in intercom
In front and export personnel's detection signal personnel's detection means, for start intercom and export enabling signal starter,
Personnel's detection means is coupled to starter with reception staff's detection signal respectively and enabling signal and output logic gate signal
Logic door gear, be coupled to logic door gear and in response to logic gate signal and the control that controls the current supply circuit of intercom to open and close
Device processed；When personnel's detection means has detected that visit person stands in face of intercom and starter exports enabling signal, then
The current supply circuit closure of the control device control intercom.
Using such scheme, by starter come before starting intercom, it is necessary first to visit person stands firm in intercommunication
The front of machine, personnel's detection means is facilitated to be detected, if personnel's detection means detects visit person, now by opening
Dynamic device carries out startup intercom so that the display screen in owner room can intuitively be shown to visit person, facilitate industry
Who visit person main confirmation is, improves the security of owner's house.
Preferably, the starter includes start button, the first divider resistance and the second partial pressure electricity being sequentially connected in series
Resistance, connecting node between first divider resistance and the second divider resistance is in response to start button and to export startup letter
Number.
Using such scheme, the keying of start button to cause the first divider resistance and the second divider resistance to carry out partial pressure,
So as to export a high level or low level enabling signal during partial pressure, facilitate the design and realization of subsequent conditioning circuit.
Preferably, personnel's detection means is pyroelectric infrared sensor.
Using such scheme, radiation itself is not sent out any kind of, device power consumption very little, good concealment is cheap, resists
Interference is strong；Detector is arranged on using highly for recommendation, to the toy on ground in investigative range, does not produce report typically
It is alert；General mobile phone electromagnetic interference will not cause wrong report；Detector is saturating by 3 meters of outer H4 Halogen lamp LEDs in the range of normal sensibility
Glass irradiation is crossed, does not produce alarm；Infrared ray pyroelectric sensor is to direction of motion relation of the sensitivity of human body also with people
Very big, infrared ray pyroelectric sensor is least sensitive for moving radially reaction, and for transverse direction（It is i.e. vertical with radius
Direction）Mobile then most sensitive, it is to avoid infrared probe wrong report, try to achieve optimum detection spirit to select suitable installation site at the scene
The particularly important ring of sensitivity.
Preferably, the logic door gear is and door.
Using such scheme, simple logic gate component can complete two phases with function, i.e., only two regulations are equal
The signal of a high level can be just exported when meeting, is easy to the design of subsequent conditioning circuit so that circuit design is more simple,
Easily implement.
Preferably, the control device is included in response to logic door gear with the control unit of output control signal, coupling
In control unit and in response to control signal with control intercom open and close enforcement division and in response to set by control unit and delay
Time after disconnect intercom current supply circuit cutting portion.
Using such scheme, control unit realizes the control to enforcement division and cutting portion according to logic gate signal, i.e., only
Having when personnel's detection signal and enabling signal are high level, control unit just starts, and now enforcement division control intercom starts,
And cutting portion is again closed intercom after a period of time that is delayed upon actuation then according to designed delay time, keep away
Exempt from owner no longer and intercom all the time in starting state and cause the waste of electric energy.
Preferably, the cutting portion include in response to control unit with export the delay unit of time delayed signal and in response to
Time delayed signal is to disconnect the switching units of intercom.
Using such scheme, delay unit is configured to the time of delay, to guarantee to be delayed after a period of time
Be controlled to switching units, and switching units in response to time delayed signal with realize disconnect intercom current supply circuit, realize
Delay cutoff function.
Preferably, also include being used for the intermittent drive device for driving personnel's detection means intermittent start, between described
Having a rest property drive device includes controlling switch, starts to realize in response to controlling switch and export the driving list of intermittent drive signal
Member and the control unit opened and closed in response to intermittent drive signal and controllers detection means.
Using such scheme, according to the keying of controlling switch come to whether needing intermittent start personnel detection means to carry out
Control, personnel's detection means can be switched to the state of intermittent start in the case of waiting visit personnel less at night,
Opened and closed by driver element come drive control unit intermittency check personnel detection means, to reduce energy consumption, raising uses the longevity
Life.
Preferably, the driver element is 555 multivibrators.
Using such scheme, the design of 555 multivibrators is simpler easily to be realized, and cost is cheap, facilitates the later stage
Maintenance.
Preferably, also include in response to personnel's detection means and for indicating personnel's detection means whether in startup shape
The instruction device of state.
Using such scheme, visit person can be allowed to see whether to be in suitable position, it is convenient start intercom with
Resident family carries out communication enabling, improves operability, facilitates visit person to operate.
Preferably, the instruction device is visual indicator and/or sound indicator.
Using such scheme, visual indicator is to realize by light to prompt staff, and sound instruction
Device is then prompted staff by sound, now can be according to different requirements to realize multiple combinations, i.e., only
It can also be indicated using visual indicator to carry out instruction only with sound indicator, it can in addition contain using sound
Indicator is indicated with the mode that visual indicator is bonded with each other so that it is more reasonable to set, using enhanced convenience.
In summary, the utility model has the advantages that：Only when the personnel of visit station is in face of intercom,
Startup intercom can be carried out by starter, who visit person facilitates owner to confirm is, improve the security of overall cell.
Brief description of the drawings
Fig. 1 is the structural representation of intercom and display screen；
Fig. 2 is the system block diagram of cell security protection control system；
Fig. 3 is the circuit theory diagrams of embodiment one；
Fig. 4 is the circuit theory diagrams of embodiment two；
Fig. 5 is the circuit theory diagrams of embodiment three；
Fig. 6 is the circuit theory diagrams of example IV.
In figure：1st, intercom；2nd, display screen；3rd, personnel's detection means；4th, starter；5th, logic door gear；6th, control
Device；61st, control unit；62nd, enforcement division；63rd, cutting portion；631st, delay unit；632nd, switching units；7th, intermittent driving dress
Put；71st, driver element；72nd, control unit；8th, instruction device.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
Embodiment one, a kind of disclosed cell security protection control system, as shown in figs. 1 and 2, including intercom 1, for detecting
Whether there is visit person station in face of intercom 1 and export personnel's detection means 3 of personnel's detection signal, for starting intercom 1
And the starter 4 of enabling signal is exported, personnel's detection means 3 is coupled to and is detected with starter 4 with reception staff respectively and believed
Number with the logic door gear 5 of enabling signal and output logic gate signal, be coupled to logic door gear 5 and in response to logic gate signal
And the control device 6 for controlling the current supply circuit of intercom 1 to open and close；When personnel's detection means 3 has detected visit person station in intercommunication
In face of machine 1 and when starter 4 exports enabling signal, then control device 6 controls the current supply circuit closure of intercom 1.Only have
When visit person station is before intercom 1, intercom 1 could be started；Conversely, intercom 1 can not be started.
As shown in figure 3, personnel's detection means 3 is pyroelectric infrared sensor, and pyroelectric infrared sensor is arranged at
The downside of intercom 1 and it is right against intercom 1 so that only when visit person stands in 1 right opposite of intercom, infrared thermal releasing fax
Sensor can just detect corresponding personnel；Pyroelectric infrared sensor includes housing, optical filter, FET Q6 and pyroelectricity
Element, housing are provided with through hole, and optical filter is connected in through hole, and FET Q6 and pyroelectricity element are located at rpyroelectric infrared
The enclosure interior of sensor, and outside heat radiation is sensed by optical filter.The main function of optical filter is only to allow wavelength
10 μm or so of infrared rays (IR wavelength that human body is sent) by, and light, sunshine and other radiation are filtered, with
Suppress extraneous interference.Infrared induction source is generally made up of two pyroelectricity elements in series or in parallel, the two pyroelectricities
The electrode of element releases its caused heat on the contrary, ambient background radiation almost has identical effect to two pyroelectricity elements
Electrical effect is cancelled out each other, and output signal is close to zero.Once in someone's intrusion detection region, human infrared radiation passes through part mirror
Face focuses on, and is received by pyroelectricity element, and because angle is different, the heat that two panels pyroelectricity element receives is different, pyroelectricity
Energy is also different, it is impossible to is completely counterbalanced by, the output control signal after processing circuit processes.Pyroelectric effect is the same as piezo-electric effect class
Seemingly, refer to cause the phenomenon of plane of crystal electric charge due to the change of temperature.Pyroelectric infrared sensor by ceramic oxide or
Piezolectric crystal unit is formed, and electrode is made on two surfaces of element, when temperature has △ T change in the range of Sensor monitoring,
Pyroelectric effect can produce electric charge △ Q on two electrodes, i.e., produce a faint voltage △ V between electrodes.Due to it
Output impedance it is high, there is FET Q6 to carry out impedance conversion in the sensor.Electric charge caused by pyroelectric effect
△ Q can by the ion in air with reference to and disappear, i.e., when ambient temperature-stable is constant, △ T=O, sensor is without output.People
Body or the larger animal of volume have constant body temperature, typically at 37 degree, so the red of 10 μm or so of specific wavelength can be sent
Outside line, when human body enters detection zone, because human body temperature and environment temperature have difference, 10 μm or so of infrared ray of human-body emitting leads to
Gathered after crossing the enhancing of Fresnel lens optical filter in infrared induction source (pyroelectricity element), infrared induction source is receiving human body
Charge balance will be lost during infra-red radiation, outwards discharges electric charge, and then produces △ T and by △ T circuit outputs to the periphery, subsequently
Circuit handle after testing after with regard to personnel's detection signal can be produced.
As shown in figure 3, starter 4 includes start button K1, the first divider resistance R11 and the second partial pressure being sequentially connected in series
Resistance R12, connecting node between the first divider resistance R11 and the second divider resistance R12 is with response to start button K1 and defeated
Go out enabling signal to logic door gear 5.
As shown in figure 3, logic door gear 5 be with door, detected respectively with starter 4, personnel with two inputs of door
Device 3 is connected, and control device 6 is connected to the output end of door.
As shown in figure 3, control device 6 include in response to logic door gear 5 with the control unit 61 of output control signal and
Be coupled to control unit 61 and in response to control signal with control intercom 1 open and close enforcement division 62；Control unit 61 is preferably NPN type
Triode Q3, enforcement division 62 is preferably relay KM3, and triode Q3 base stage is connected to the output end of logic door gear 5, three
Pole pipe Q3 grounded emitter, triode Q3 colelctor electrode are connected to relay KM3 coil, anti-on relay KM3 coil
Sustained diode 3 is parallel with, relay KM3 normally opened contact is connected to the current supply circuit of intercom 1.
Specific work process is as follows：
When personnel's detection means 3 has detected that visit person is located in face of intercom 1, then the personnel of a high level are exported
Detection signal is to logic door gear 5, while visit person presses starter 4 to export the enabling signal of a high level to logic
Door gear 5；And signal of the logic door gear 5 due to receiving two high level, therefore export the logic gate signal of a high level
To triode Q3 base stage, triode Q3 conductings, relay KM3 coil obtains electric so that relay KM3 normally opened contact closure
To control intercom 1 to open.
Embodiment two, on the basis of embodiment one, as shown in figs. 2 and 4, cell security protection control system also includes response
The cutting portion 63 of the current supply circuit of intercom 1 is disconnected after the time set by control unit 61 and delay；Cutting portion 63 includes response
In control unit 61 to export the delay unit 631 of time delayed signal and in response to time delayed signal to disconnect the disconnection list of intercom 1
Member 632.
As shown in figure 4, delay unit 631 is preferably 555 delay circuits, the controlled end of 555 delay circuits is coupled to relay
Device KM3 normally opened contact, the controlled end of 555 delay circuits is power end, thus relay KM3 normally opened contact be connected to power supply with
Between 555 chips, when relay KM3 normally opened contact closure, then 555 delay circuit electric energy are provided, after switching on power, by
Charged in electric capacity C1, that is, electric current and potential difference be present, so as to ensure that the crus secunda of 555 chips and the 6th pin are in high electricity
It is flat, now the 3rd pin output low level of 555 chips, with electric capacity Cl chargings until charging complete, due to electric capacity it is fully charged after
Do not recharge, therefore electric current and current potential is not present, obstructed dc source by electric capacity C1 so that the second of 555 chips
The current potential of pin and the 6th pin becomes low level, and the electric signal of output end output is overturn, i.e., the signal of output end output is by low
Level is changed into high level, and is always maintained at down.Diode VD is set for electric capacity C2 electric discharges after power cut-off.
As shown in figure 4, switching units 632 include the triode Q4 and relay KM4 of NPN type, triode Q4 base stage connects
The output end of delay unit 631, triode Q4 grounded emitter are connected to, triode Q4 colelctor electrode is connected to relay KM4
Coil, relay KM4 normally-closed contact is connected to the current supply circuit of intercom 1.
Specific work process is as follows：
When personnel's detection means 3 has detected that visit person is located in face of intercom 1, then the personnel of a high level are exported
Detection signal is to logic door gear 5, while visit person presses starter 4 to export the enabling signal of a high level to logic
Door gear 5；And signal of the logic door gear 5 due to receiving two high level, therefore export the logic gate signal of a high level
To triode Q3 base stage, triode Q3 conductings, relay KM3 coil obtains electric so that relay KM3 normally opened contact closure
To control intercom 1 to open；If now due to owner not when, can pass through delay unit 631 set by delay time
The time delayed signal for exporting a high level afterwards turns on to triode Q4, triode Q4, and relay KM4 coil obtains electric, relay
KM4 normally-closed contact disconnects, to close intercom 1；The mode that another kind closes intercom 1 is, before visit person Li Kai intercoms 1
Face, i.e. personnel's detection means 3 do not detect visit person, then logic door gear 5 exports a low level logic gate signal extremely
Triode Q3, triode shut-off, relay KM3 coil losing electricity, disconnected so as to relay KM3 normally opened contact, realize and close
Intercom 1.
Embodiment three, on the basis of embodiment one or embodiment two, as shown in Fig. 2 and 5, cell security protection control system
Also include being used for the intermittent drive device 7 for driving the intermittent start of personnel's detection means 3, intermittent drive device 7 includes control
System switch K2, in response to controlling switch with realize start and export intermittent drive signal driver element 71 and in response to
The control unit 72 that having a rest property drive signal and controllers detection means 3 open and close.
As shown in figure 5, driver element 71 is 555 multivibrators, 555 multi-resonant oscillating circuits are made up of 555 timing chips,
The first pin ground connection of 555 timers, second pin and the 6th pin couple, and it is adjustable between power supply VCC to be connected with the 6th
Resistance R16 and the 5th resistance R15, the 7th pin are connected to the 6th adjustable resistance R16 and the 5th resistance R15 and connect the node to be formed,
The 3rd electric capacity C11 is also connected between second pin and ground terminal, the 4th electric capacity C12 is connected between the 5th pin and ground terminal, is led to
Cross control the 6th adjustable resistance R16 can control its export PWM ripples dutycycle, so as to control output pulse interval when
Between, and then output square wave is realized to be just driven after separated in time.The controlled end of 555 multi-resonant oscillating circuits is power supply
VCC, i.e., it is connected with controlling switch K2 between the node that power supply VCC and the 8th pin, the 4th pin are formed and is opened with control
K2 normally-closed contact connection is closed, by opening and closing controlling switch K2, realizes the keying to 555 multi-resonant oscillating circuits.
As shown in figure 5, control unit 72 includes the triode Q5 and relay KM5 of NPN type, triode Q5 base stage connection
In the output end of driver element 71, triode Q5 grounded emitter, triode Q5 colelctor electrode is connected to relay KM5 line
Circle, relay KM5 normally opened contact are connected to the current supply circuit of personnel's detection means 3.
The specific course of work is as follows：
Start intermittent drive device 7 by controlling switch K2, while driver element 71 exports square wave to control unit
72, triode Q5 realize that discontinuity turns on according to square wave, and when triode Q5 is turned on, relay KM5 coil obtains electric, relay
KM5 normally opened contact closure, and then the current supply circuit conducting of controllers detection means 3；Conversely, then controllers detection means
3 current supply circuit disconnects.
Example IV, on the basis of embodiment one or embodiment two or embodiment three, as illustrated for figs. 2 and 6, cell peace
Whether anti-control system also includes also including in response to personnel's detection means 3 and for indicating personnel's detection means 3 in startup
The instruction device 8 of state.Instruction device 8 is visual indicator and/or sound indicator, and wherein visual indicator can be LED
Indicator lamp, sound indicator can be buzzer；Strobelight indicator is preferably used in the present embodiment.
As shown in fig. 6, strobelight indicator includes controller, oscillator, triode Q2 and indicator lamp LED1, wherein controlling
Device processed includes the triode Q1 and relay KM1 of NPN type, and triode Q1 base stage is connected to the output end of personnel's detection means 3,
And triode Q1 grounded emitter, triode Q1 colelctor electrode are connected to relay KM1 coil, the controlled terminal coupling of oscillator
Power supply is connected after being connected to relay KM1 normally opened contact, the output end of oscillator is coupled to triode Q2 base stage, and controls three
Pole pipe Q2 break-make, triode Q2 colelctor electrode, which is connected to after indicator lamp LED1, connects power supply, triode Q2 grounded emitter,
When relay KM1 coil obtains electric, control relay KM1 normally opened contact closure so that control oscillator operation, export one
Control signal, control signal are square wave, control triode Q2 alternating break-makes, to cause indicator lamp LED1 discontinuity to indicate, are realized
The function of instruction.
Claims (10)
1. a kind of cell security protection control system, including intercom (1), it is characterized in that：Also include for detecting whether there is visit person
Stand in face of intercom (1) and export personnel's detection means (3) of personnel's detection signal, for starting intercom (1) and exporting
The starter (4) of enabling signal, it is coupled to personnel's detection means (3) and is detected with starter (4) with reception staff respectively and believed
Number with the logic door gear (5) of enabling signal and output logic gate signal, be coupled to logic door gear (5) and in response to gate
Signal and the control device (6) for controlling the current supply circuit of intercom (1) to open and close；When personnel's detection means (3) has detected visit
Person station is in face of intercom (1) and when starter (4) exports enabling signal, then the control device (6) controls intercom (1)
Current supply circuit closure.
2. a kind of cell security protection control system according to claim 1, it is characterized in that：The starter (4) include according to
The start button of secondary series connection, the first divider resistance and the second divider resistance, first divider resistance and the second divider resistance it
Between connecting node in response to start button and to export enabling signal.
3. a kind of cell security protection control system according to claim 1, it is characterized in that：Personnel's detection means (3) is
Pyroelectric infrared sensor.
4. a kind of cell security protection control system according to claim 1, it is characterized in that：The logic door gear (5) be with
Door.
5. a kind of cell security protection control system according to claim 1, it is characterized in that：The control device (6) includes ringing
Should in logic door gear (5) with the control unit (61) of output control signal, be coupled to control unit (61) and in response to control signal
To control enforcement division (62) that intercom (1) opens and closes and be disconnected in response to control unit (61) and after delay set time pair
Say the cutting portion (63) of machine (1) current supply circuit.
6. a kind of cell security protection control system according to claim 5, it is characterized in that：The cutting portion (63) includes response
In control unit (61) to export the delay unit of time delayed signal (631) and in response to time delayed signal to disconnect intercom (1)
Switching units (632).
7. a kind of cell security protection control system according to claim 1, it is characterized in that：Also include being used to drive personnel to detect
The intermittent drive device (7) of device (3) intermittent start, the intermittent drive device (7) include controlling switch, in response to
Controlling switch starts to realize and exports the driver element (71) of intermittent drive signal and in response to intermittent drive signal
And the control unit (72) that controllers detection means (3) opens and closes.
8. a kind of cell security protection control system according to claim 7, it is characterized in that：The driver element (71) is 555
Multivibrator.
9. a kind of cell security protection control system according to claim 1 or 7, it is characterized in that：Also include examining in response to personnel
Survey device (3) and for indicating whether personnel's detection means (3) is in the instruction device (8) of starting state.
10. a kind of cell security protection control system according to claim 9, it is characterized in that：The instruction device (8) is light
Indicator and/or sound indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382284.4U CN206672202U (en) | 2017-04-12 | 2017-04-12 | A kind of cell security protection control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382284.4U CN206672202U (en) | 2017-04-12 | 2017-04-12 | A kind of cell security protection control system |
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| Publication Number | Publication Date |
|---|---|
| CN206672202U true CN206672202U (en) | 2017-11-24 |
Family
ID=60381443
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720382284.4U Expired - Fee Related CN206672202U (en) | 2017-04-12 | 2017-04-12 | A kind of cell security protection control system |
Country Status (1)
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| CN (1) | CN206672202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724507A (en) * | 2020-05-29 | 2020-09-29 | 成都启麦艾科技有限责任公司 | Internet of things monitoring access control linkage system |
| CN115171255A (en) * | 2022-06-27 | 2022-10-11 | 北京睿家科技有限公司 | Access control system based on infrared detection |
-
2017
- 2017-04-12 CN CN201720382284.4U patent/CN206672202U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724507A (en) * | 2020-05-29 | 2020-09-29 | 成都启麦艾科技有限责任公司 | Internet of things monitoring access control linkage system |
| CN115171255A (en) * | 2022-06-27 | 2022-10-11 | 北京睿家科技有限公司 | Access control system based on infrared detection |
| CN115171255B (en) * | 2022-06-27 | 2024-05-10 | 北京睿家科技有限公司 | Access control system based on infrared detection |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20190412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |