CN211144238U

CN211144238U - Prevent following door system that detects people number

Info

Publication number: CN211144238U
Application number: CN201921763562.6U
Authority: CN
Inventors: 王来明; 王来福; 岳勇
Original assignee: Hefei Weifeng Electronic Co ltd
Current assignee: Hefei Weifeng Electronic Co ltd
Priority date: 2019-10-19
Filing date: 2019-10-19
Publication date: 2020-07-31
Anticipated expiration: 2029-10-19

Abstract

The utility model discloses a prevent following door system that people number detected relates to security protection equipment technical field, aim at solving current linkage door when operating personnel suffer from gangster and coerce, often use operating personnel for sheltering from, the inside operating personnel of taking out linkage door opens the interior door and gets into, thereby the technical problem of the loss of property has been leaded to, its technical scheme main points are including interior door subassembly, outer door subassembly and connection passageway, connect the inside passageway that supplies single current that is provided with in passageway, connect the inside detection circuitry that is provided with in passageway, detection circuitry includes first detection device, the second detection device, a control part, response part and suggestion portion, response part coupling is in control part and in response to control signal with control interior door subassembly locking, suggestion portion coupling is in control part and in response to control signal in order to make the suggestion. The number of people who get into in connecting the passageway is detected to reach and lock interior door subassembly and the effect of reporting to the police when surpassing the default.

Description

Prevent following door system that detects people number

Technical Field

The utility model relates to a security protection equipment technical field, more specifically say, it relates to an anti-following door system that detects is carried out to people.

Background

The anti-following linkage interlocking safety door is a special safety door with the functions of preventing following and preventing missing lock, wherein the anti-following means that an unauthorized person enters a business place after entering a door, and the anti-missing lock means that the worker forgets or does not close the door in place when entering or exiting the door, so that the door is not completely locked. The anti-trailing interlocking safety door is provided with an inner door and an outer door, the inner door cannot be opened under the condition that the outer door is not locked, and the inner door can be opened only under the condition that the outer door is completely locked.

The existing Chinese patent with the publication number of CN206917540U discloses an anti-following linkage door, which comprises an inner door component, an outer door component and a connecting passageway for connecting the inner door component and the outer door component, wherein the outer door component comprises an outer door plate and an identity recognizer for controlling the opening and closing of the outer door plate, the inner door component comprises an inner door plate and an inner door lock which can only be opened from the inner side, and the inner door plate is provided with an observation port for observing the internal situation of the connecting passageway. An identity recognizer is installed on an outer door assembly of the anti-following linkage door to control the opening and closing of the outer door plate, and the outer door plate is opened after the identity recognizer recognizes and authenticates the identity, so that people can enter the connecting passageway. The person on the inner side of the inner door plate can observe the condition on the inner side of the connecting passageway through the observation port, and the inner door plate is opened after the identity of the person in the connecting passageway is confirmed, so that the person in the connecting passageway can pass through the inner door assembly.

However, when an operator is forced by a ruffian, the operator in the existing linkage door is often taken as a shelter to cheat the operator in the linkage door to open the inner door for entering, so that property loss is caused, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a prevent following door system that detects is carried out to people, it has the number that gets into in connecting the passageway and detects to carry out the advantage that door subassembly and warning in the locking when exceeding the default.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an anti-following door system for detecting the number of people comprises an inner door assembly, an outer door assembly and a connecting passageway, wherein the inner door assembly is hinged to one side of the connecting passageway, the outer door assembly is hinged to one side of the connecting passageway, which is far away from the inner door assembly, and identity recognition devices are respectively arranged on the inner door assembly and the outer door assembly; connect the inside passageway that is provided with the confession single current in passageway, connect the inside detection circuitry that is provided with in passageway, detection circuitry includes first detection device, second detection device, control part, response portion and suggestion portion, first detection device is coupled in control part with output first detected signal, second detection device is coupled in control part with output second detected signal, control part responds to first detected signal and second detected signal with output control signal, response portion is coupled in control part and responds to control signal in order to control door subassembly locking, suggestion portion is coupled in control part and responds to control signal in order to make the suggestion.

By adopting the technical scheme, the first detection device and the second detection device detect the personnel condition inside the channel connected with the passageway, and the control part controls the response part to respond when personnel enter the channel along with the staff, so that the inner door assembly cannot be opened, and the probability of robbery accidents caused by the coerce of the staff is effectively reduced. Meanwhile, the control part controls the prompting part to prompt indoor workers, so that the indoor operators are alerted.

Further, the first detecting device includes a load cell, a reference circuit, a comparator and a protection resistor R3, the load cell is coupled to a non-inverting terminal of the comparator, the reference circuit is coupled to an inverting terminal of the comparator to input a reference signal, an output terminal of the comparator is coupled to the protection resistor R3, and another terminal of the protection resistor R3 is coupled to the control portion to output the first detecting signal.

Through adopting above-mentioned technical scheme, weighing sensor's setting is weighed the inside personnel's of passageway quality to through reference circuit input reference voltage, when the quality of weighing turns into the voltage and surpasss the default, the comparator exports first detected signal, thereby has realized carrying out the effect that detects to personnel's quality in the passageway.

Further, the reference circuit comprises a first resistor R1 and a second resistor R2 connected in series between the power source VCC and the ground terminal, a connection point of the first resistor R1 and the second resistor R2 is coupled to a non-inverting terminal of the comparator, and the second resistor R2 is an adjustable resistor.

By adopting the technical scheme, the power supply is divided by the first resistor R1 and the second resistor R2, and the voltage of the first resistor R1 is adjustable by the adjustable resistor to the second resistor R2, so that the detection accuracy of the first detection signal can be adjusted, and errors are prevented.

Furthermore, the second detection device comprises two infrared sensors and a first and gate, wherein one infrared sensor is fixed on the side wall of one end, close to the inner gate assembly, of the connecting passage, the other infrared sensor is fixed on the side wall of one end, close to the outer gate assembly, of the connecting passage, the two infrared sensors are respectively coupled to two input ends of the first and gate, and the output end of the first and gate outputs a second detection signal.

Through adopting above-mentioned technical scheme, the setting of two infrared sensor and AND gate is convenient for produce the second and detect signal when two infrared sensor all detect personnel to detect the personnel quantity in the passageway from the other side.

Further, the control part comprises a second and gate, a first triode Q1, a freewheeling diode D1 and two electromagnetic relays, two input ends of the second and gate are respectively coupled to the first detection device and the second detection device, an output end of the second and gate is coupled to a base of the first triode Q1, an emitter of the first triode Q1 is grounded, a collector of the first triode Q1 is connected to an anode of the freewheeling diode D1, a collector of the freewheeling diode D1 is coupled to a power source VCC, coils of the first electromagnetic relay KM1 and the second electromagnetic relay KM2 are respectively connected in parallel to two ends of the freewheeling diode D1, a normally open contact of the first electromagnetic relay KM1 is arranged in the response part, and a normally open contact of the second electromagnetic relay KM2 is arranged in the prompt part.

Through adopting above-mentioned technical scheme, the setting of second AND gate makes first detected signal and second detected signal start control portion when satisfying simultaneously, has improved the accuracy that detects, effectively prevents the condition of maloperation. The control part controls the response part and the prompt part through the two electromagnetic relays, so that electrical separation is realized, and the safe operation of the control part is ensured.

Further, the response part comprises an alternating current power supply, a normally closed switch and a cylinder, wherein the alternating current power supply, the normally closed switch and the cylinder are connected in series, the normally open contact of the first electromagnetic relay KM1 is connected in series between the normally closed switch and the cylinder, and the cylinder is fixed in the inner door assembly.

Through adopting above-mentioned technical scheme, the cylinder is controlled by the control signal realization that control portion sent to the locking of subassembly of interior door.

Furthermore, a plurality of locking rods are fixed on the piston rod of the air cylinder, and a plurality of locking holes for inserting the locking rods are formed in the bottom end of the inner door assembly.

Through adopting above-mentioned technical scheme, the cylinder is controlled to drive during locking pole inserts the locking hole for even the staff also can't open interior door subassembly through the unlocking of identification device, effectively reduced the emergence of robbing the accident.

Further, the response part comprises an oscillator, a second transistor Q2 and a light emitting diode, wherein a controlled end of the oscillator is coupled to the normally open contact of the second electromagnetic relay KM2 and then connected to the power source VCC, a controlled end of the oscillator is coupled to the base of the second transistor Q2, an emitter of the second transistor Q2 is grounded, a collector of the second transistor Q2 is coupled to the cathode of the light emitting diode, and an anode of the light emitting diode is coupled to the power source VCC.

By adopting the technical scheme, the oscillator and the light emitting diode are arranged so as to control the light emitting diode to flicker, thereby prompting indoor workers to timely handle abnormal conditions and adopting measures such as locking an inner door assembly and the like to ensure safety.

To sum up, the utility model discloses following beneficial effect has:

1. the technology that a weighing sensor, a reference circuit, a comparator, two infrared sensors, a first AND gate and a second AND gate are matched is adopted, so that the effect of improving the detection accuracy is achieved;

2. the technology that the control part is coupled with the response part and the air cylinder, the locking rod and the locking hole are matched is adopted, so that the effect of preventing the inner door assembly from being opened when a plurality of people enter the inner door assembly is achieved;

3. the technology that the control part, the prompting part, the oscillator and the light emitting diode are matched is adopted, so that the effect of prompting an indoor operator is achieved.

Drawings

FIG. 1 is a schematic diagram illustrating an overall structure of an anti-tailgating system for detecting a person count according to an embodiment;

FIG. 2 is a circuit diagram of a detection circuit in an embodiment;

fig. 3 is a schematic diagram for showing the structure of the cylinder and the lock rod in the embodiment.

In the figure: 1. an inner door assembly; 11. an outer door assembly; 12. connecting the aisle; 121. a channel; 13. an identity recognition device; 14. a locking hole; 2. a detection circuit; 21. a first detection device; 22. a second detection device; 23. a control unit; 24. a response section; 25. a presentation unit; 3. a cylinder; 31. a piston rod; 310. a fixing plate; 311. a locking lever.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model provides a prevent following door system that people counted and detect, refer to fig. 1, it includes interior door subassembly 1, outer door subassembly 11 and connects passageway 12, and interior door subassembly 1 articulates in one side of connecting passageway 12, and outer door subassembly 11 articulates in one side of connecting passageway 12 and keeping away from interior door subassembly 1, and interior door subassembly 1 is installed indoor, and outer door subassembly 11 is installed outdoor. The inner door component 1 and the outer door component 11 are respectively provided with an identity recognition device 13, the identity recognition device 13 is a fingerprint lock and a coded lock, the identity recognition device 13 on the inner door component 1 is installed on one side close to the connecting passageway 12, and the identity recognition device 13 on the outer door component 11 is installed on one side far away from the connecting passageway 12.

Referring to fig. 2 and 3, a passage 121 for a single person to pass through is arranged inside the connecting passageway 12, and the width of the passage 121 is 0.5 meter and the length of the passage is 0.7 meter. The detection circuit 2 is disposed inside the connecting passageway 12, the detection circuit 2 includes a first detection device 21, a second detection device 22, a control portion 23, a response portion 24 and a prompt portion 25, the first detection device 21 is coupled to the control portion 23 to output a first detection signal, the second detection device 22 is coupled to the control portion 23 to output a second detection signal, the control portion 23 is responsive to the first detection signal and the second detection signal to output a control signal, the response portion 24 is coupled to the control portion 23 and is responsive to the control signal to control the locking of the inner door assembly 1, and the prompt portion 25 is coupled to the control portion 23 and is responsive to the control signal to prompt.

Referring to fig. 2, the first detecting device 21 includes a load cell, a reference circuit, a comparator and a protection resistor R3, the load cell is a strain-type load cell, the load cell is fixed at the bottom of the ground of the connecting passageway 12, the comparator is a L M339 type comparator, the load cell is coupled to the non-inverting terminal of the comparator, the reference circuit is coupled to the inverting terminal of the comparator to input a reference signal, the output terminal of the comparator is coupled to the protection resistor R3, the other terminal of the protection resistor R3 is coupled to the control unit 23 to output a first detection signal, when the voltage of the load cell exceeds the reference voltage, the comparator outputs a high level as the first detection signal.

Referring to fig. 2, the reference circuit includes a first resistor R1 and a second resistor R2 connected in series between the power source VCC and the ground terminal, a connection point of the first resistor R1 and the second resistor R2 is coupled to a non-inverting terminal of the comparator, the second resistor R2 is an adjustable resistor, the adjustable resistor is specifically a potentiometer, an adjusting knob of the potentiometer is disposed on a side surface of the inner door assembly 1 away from the connecting passageway 12, and the detection accuracy of the weighing sensor is adjusted by adjusting the resistance value of the second resistor R2.

Referring to fig. 2, the second detection device 22 includes two infrared sensors and a first and gate, the first and gate is a 7408-type 2-input and gate, and the infrared sensor is a HC-SR501 pyroelectric infrared sensor module. One of the infrared sensors is embedded in the side wall of the connecting passageway 12 at one end of the channel 121 close to the inner door assembly 1, the other infrared sensor is embedded in the side wall of the connecting passageway 12 at one end of the channel 121 close to the outer door assembly 11, the two infrared sensors are respectively coupled to two input ends of the first and gate, and the output end of the first and gate outputs a second detection signal.

Referring to fig. 2, the control unit 23 includes a second and gate, a first transistor Q1, a freewheeling diode D1, and two electromagnetic relays, the first transistor Q1 is an NPN-type silicon transistor, the second and gate is a 7408-type 2-input and gate, and the electromagnetic relay is a JZ 7-type intermediate electromagnetic relay. Two input ends of the second and gate are respectively coupled to the first detection device 21 and the second detection device 22, an output end of the and gate is coupled to a base electrode of the first triode Q1, an emitter electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected to an anode of the freewheeling diode D1, a collector electrode of the freewheeling diode D1 is coupled to the power source VCC, coils of the first electromagnetic relay KM1 and the second electromagnetic relay KM2 are respectively connected in parallel to two ends of the freewheeling diode D1, a normally open contact of the first electromagnetic relay KM1 is arranged in the response portion 24, and a normally open contact of the second electromagnetic relay KM2 is arranged in the prompt portion 25.

Referring to fig. 2 and 3, the response portion 24 includes an ac power supply of 220V commercial power, a normally closed switch, and the cylinder 3. The alternating current power supply, the normally closed switch and the cylinder 3 are connected in series, and the normally open contact of the first electromagnetic relay KM1 is connected in series between the normally closed switch and the cylinder 3. When the coil of the first electromagnetic relay KM1 is electrified to adsorb the normally open contact and is closed, the air cylinder 3 is electrified to work so as to drive the piston rod 31 to extend out to lock the inner door assembly 1.

Referring to fig. 2 and 3, a plurality of locking rods 311 are fixed on the piston rod 31 of the cylinder 3, the piston rod 31 of the cylinder 3 is connected with a fixing plate 310, seven locking rods 311 are arranged on one side, away from the cylinder 3, of the fixing plate 310, a plurality of locking holes 14 for inserting the locking rods 311 are arranged at the bottom end of the inner door assembly 1, the locking holes 14 are matched with the locking rods 311, and the locking rods 311 are inserted into the locking holes 14 to lock the inner door assembly 1.

Referring to fig. 2, the response unit 24 includes an oscillator, a second transistor Q2 and a light emitting diode, a controlled terminal of the oscillator is coupled to the normally open contact of the second electromagnetic relay KM2 and then connected to a power source VCC, the second transistor Q2 is an NPN-type transistor, a controlled terminal of the oscillator is coupled to a base of the second transistor Q2, an emitter of the second transistor Q2 is grounded, a collector of the second transistor Q2 is coupled to a cathode of the light emitting diode, and an anode of the light emitting diode is coupled to the power source VCC. The light emitting diodes are arranged on a side surface of the inner door assembly 1 facing away from the connecting aisle 12.

The working principle is as follows:

when a lawbreaker holding a bank worker opens the outer door assembly 11 into the passageway 121 of the connecting passageway 12, the first detecting device 21 detects that the weight exceeds a preset value, and the comparator outputs a high level to the control section 23. Meanwhile, the channel 121 is narrow and lawless persons need to be shielded by workers, so that the lawless persons and the workers stand in tandem. At this time, the two infrared sensors in the second detection device 22 simultaneously output a high level to the first and gate, and the first and gate outputs a high level to the control unit 23. At this time, both input terminals of the control unit 23 input a high level, so that the output terminal of the second and gate outputs a high level to the base of the first transistor Q1, the collector and the emitter of the NPN-type first transistor Q1 are turned on, and at this time, the coil of the first electromagnetic relay KM1 and the coil of the second electromagnetic relay KM2 are respectively electrically connected to normally open contacts. At this time, the cylinder 3 is driven by receiving ac power, so that the locking rod 311 is inserted into the locking hole 14, and the inner door assembly 1 cannot be opened. Meanwhile, the oscillator starts to vibrate, and the light emitting diode continuously flickers to remind an indoor operator of paying attention to the condition in the connecting passageway 12 in time.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. An anti-following door system for detecting the number of people comprises an inner door component (1), an outer door component (11) and a connecting passageway (12), wherein the inner door component (1) is hinged to one side of the connecting passageway (12), the outer door component (11) is hinged to one side, away from the inner door component (1), of the connecting passageway (12), and identity recognition devices (13) are respectively arranged on the inner door component (1) and the outer door component (11); the method is characterized in that: a channel (121) for a single person to pass through is arranged in the connecting passage (12), a detection circuit (2) is arranged in the connecting passage (12), the detection circuit (2) comprises a first detection device (21), a second detection device (22), a control part (23), a response part (24) and a prompt part (25), the first detection device (21) is coupled to the control part (23) to output a first detection signal, the second detection device (22) is coupled to the control part (23) to output a second detection signal, the control section (23) outputs a control signal in response to the first detection signal and the second detection signal, the response part (24) is coupled with the control part (23) and responds to the control signal to control the locking of the inner door component (1), the prompting part (25) is coupled to the control part (23) and responds to the control signal to prompt.

2. The anti-tailgating door system for detecting people according to claim 1, wherein: the first detection device (21) comprises a load cell, a reference circuit, a comparator and a protection resistor R3, wherein the load cell is coupled to a non-inverting terminal of the comparator, the reference circuit is coupled to an inverting terminal of the comparator to input a reference signal, an output terminal of the comparator is coupled to a protection resistor R3, and the other end of the protection resistor R3 is coupled to the control part (23) to output a first detection signal.

3. The anti-tailgating door system for detecting people according to claim 2, wherein: the reference circuit comprises a first resistor R1 and a second resistor R2 which are connected in series between a power supply VCC and a ground terminal, the connection point of the first resistor R1 and the second resistor R2 is coupled to the in-phase terminal of the comparator, and the second resistor R2 is an adjustable resistor.

4. The anti-tailgating door system for detecting people according to claim 1, wherein: the second detection device (22) comprises two infrared sensors and a first AND gate, wherein one infrared sensor is fixed on one end side wall of the connecting passageway (12) close to the inner gate assembly (1) and located in the passageway (121), the other infrared sensor is fixed on one end side wall of the connecting passageway (12) close to the outer gate assembly (11) and located in the passageway (121), the two infrared sensors are respectively coupled to two input ends of the first AND gate, and the output end of the first AND gate outputs a second detection signal.

5. The anti-tailgating door system for detecting people according to claim 1, wherein: the control part (23) comprises a second AND gate, a first triode Q1, a freewheeling diode D1 and two electromagnetic relays, wherein two input ends of the second AND gate are respectively coupled to the first detection device (21) and the second detection device (22), an output end of the AND gate is coupled to a base electrode of the first triode Q1, an emitter electrode of the first triode Q1 is grounded, a collector electrode of the first triode Q1 is connected to an anode electrode of the freewheeling diode D1, a collector electrode of the freewheeling diode D1 is coupled to a power supply VCC, coils of the first electromagnetic relay KM1 and the second electromagnetic relay KM2 are respectively connected to two ends of the freewheeling diode D1 in parallel, a normally open contact of the first electromagnetic relay KM1 is arranged in the response part (24), and a normally open contact of the second electromagnetic relay KM2 is arranged in the prompt part (25).

6. The anti-tailgating door system for detecting people according to claim 1, wherein: the response part (24) comprises an alternating current power supply, a normally closed switch and a cylinder (3), wherein the alternating current power supply, the normally closed switch and the cylinder (3) are connected in series, a normally open contact of the first electromagnetic relay KM1 is connected between the normally closed switch and the cylinder (3) in series, and the cylinder (3) is fixed in the inner door assembly (1).

7. The anti-tailgating door system for detecting people according to claim 6, wherein: a plurality of locking rods (311) are fixed on a piston rod (31) of the air cylinder (3), and a plurality of locking holes (14) for the locking rods (311) to be inserted are formed in the bottom end of the inner door component (1).

8. The anti-tailgating door system for detecting people according to claim 1, wherein: the response part (24) comprises an oscillator, a second triode Q2 and a light emitting diode, wherein a controlled end of the oscillator is coupled to the normally-open contact of the second electromagnetic relay KM2 and then connected with a power supply VCC, a controlled end of the oscillator is coupled to the base of the second triode Q2, an emitter of the second triode Q2 is grounded, a collector of the second triode Q2 is coupled to the cathode of the light emitting diode, and the anode of the light emitting diode is coupled to the power supply VCC.