CN210781115U

CN210781115U - Building intercom main unit

Info

Publication number: CN210781115U
Application number: CN201922181399.9U
Authority: CN
Inventors: 王海涛
Original assignee: Guangzhou Zhengxin Electronic Technology Co ltd
Current assignee: Guangzhou Zhengxin Electronic Technology Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-06-16
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a building security protection control field discloses a building intercom host, including microprocessor, audio acquisition module, audio output module, video acquisition module, video output module, touch screen, RFID entrance guard card reading module, door magnetism signal interface, lock switch interface, luminance detection module, infrared light filling lamp, wireless communication module and power module, microprocessor is connected with audio acquisition module, audio output module, video acquisition module, video output module, touch screen and power module respectively; the power supply module comprises a voltage input end, a first resistor, a first diode, a first triode, a second triode, a third diode, a second resistor, a third triode, a third resistor, a fourth triode, a second voltage-regulator tube, a fourth potentiometer, a fifth potentiometer, a first capacitor and a voltage output end. The utility model discloses circuit structure is comparatively simple, the cost is lower, the security and the reliability of convenient maintenance, circuit are higher.

Description

Building intercom main unit

Technical Field

The utility model relates to a building security protection control field, in particular to building host computer of talkbacking.

Background

Building intercom is a security system. The management system is a management system which realizes mutual communication among visitors, residents and property management centers in a multi-storey or high-rise building, performs information exchange and realizes control over safe access channels of a residential area, and is commonly called a building intercom system. The doorway host machine is the control core part of the building intercom system, the transmission signals of each indoor extension set and the electric lock control signals are controlled by the host machine, the circuit board of the doorway host machine is installed in a vibration damping mode, and is subjected to moisture-proof treatment, the vibration-proof and moisture-proof capabilities are strong, and the doorway host machine is provided with a night lighting device, so that the doorway host machine is attractive and elegant in appearance. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional door host, and it can be seen from fig. 1 that the power supply portion of the conventional door host uses many components, has a complex circuit structure and high hardware cost, and is inconvenient to maintain. In addition, since the power supply part of the conventional doorway host machine lacks a corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a circuit structure is comparatively simple, the cost is lower, convenient maintenance, the security and the higher building host computer of talkbacking of reliability of circuit are provided.

The utility model provides a technical scheme that its technical problem adopted is: the building intercom host comprises a microprocessor, an audio acquisition module, an audio output module, a video acquisition module, a video output module, a touch screen, an RFID entrance guard card reading module, a door magnetic signal interface, a door lock switch interface, a light brightness detection module, an infrared light supplement lamp, a wireless communication module and a power supply module, wherein the microprocessor is respectively connected with the audio acquisition module, the audio output module, the video acquisition module, the video output module, the touch screen, the RFID entrance guard card reading module, the door magnetic signal interface, the door lock switch interface, the light brightness detection module, the infrared light supplement lamp, the wireless communication module and the power supply module;

the power supply module comprises a voltage input end, a first resistor, a first diode, a first triode, a second triode, a third diode, a second resistor, a third triode, a third resistor, a fourth triode, a second voltage-regulator tube, a fourth potentiometer, a fifth potentiometer, a first capacitor and a voltage output end, wherein one end of the voltage input end is connected with one end of the first resistor, the anode of the first diode, the anode of the third diode and the collector of the third triode respectively, the base of the second triode is connected with the cathode of the first diode and the collector of the first triode respectively, the cathode of the third diode is connected with the emitter of the second triode, and the other end of the first resistor is connected with one end of the second resistor, the base of the first triode and the emitter of the first triode respectively, One end of the third resistor is connected with the other end of the voltage input end, the base of the third triode is respectively connected with the collector of the second triode and the collector of the fourth triode, the emitter of the fourth triode is connected with the anode of the second voltage regulator tube, the emitter of the third triode is respectively connected with the other end of the second resistor, one fixed end of the fourth potentiometer, the sliding end of the fourth potentiometer, one end of the first capacitor and one end of the voltage output end, the other fixed end of the fourth potentiometer is connected with one fixed end of the fifth potentiometer, the base of the fourth triode is connected with the sliding end of the fifth potentiometer, the other end of the third resistor is respectively connected with the cathode of the second voltage regulator tube, the other fixed end of the fifth potentiometer, the base of the third triode, the collector of the fourth potentiometer, the emitter of the third triode, the emitter of the fourth potentiometer, the collector of the, The other end of the first capacitor is connected with the other end of the voltage output end.

In the building intercom host of the present invention, the third diode has a model of S-152T.

In the building intercom host, the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected with the base of the third triode, and the other end of the sixth resistor is connected with the collector of the fourth triode.

In the building intercom host of the present invention, the resistance of the sixth resistor is 32k Ω.

In the building intercom host of the present invention, the first triode is an NPN-type triode.

In the building intercom host of the present invention, the second triode is a PNP type triode.

In the building intercom host of the present invention, the third triode is an NPN-type triode.

Building host computer of talkbacking, wireless communication module is in 5G communication module, 4G communication module, bluetooth module, wiFi module, GSM module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module and loRa module arbitrary one or arbitrary several kinds of combinations.

Implement the utility model discloses a building host computer of talkbacking has following beneficial effect: the intelligent door lock is provided with a microprocessor, an audio acquisition module, an audio output module, a video acquisition module, a video output module, a touch screen, an RFID entrance guard card reading module, a door magnetic signal interface, a door lock switch interface, a brightness detection module, an infrared light supplement lamp, a wireless communication module and a power supply module; power module includes voltage input end, first resistance, first diode, first triode, the second triode, the third diode, the second resistance, the third triode, the third resistance, the fourth triode, the second stabilivolt, the fourth potentiometre, the fifth potentiometre, first electric capacity and voltage output end, this power module compares with the power supply part of traditional gate host computer, and its components and parts that use are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, the third diode is used for carrying out current-limiting protection, consequently the utility model discloses circuit structure is comparatively simple, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional doorway host machine;

fig. 2 is a schematic structural diagram of an embodiment of the building intercom host of the present invention;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses in the building intercom host computer embodiment, the structural schematic diagram of its building intercom host computer is shown in fig. 2. In fig. 2, this building intercom host includes microprocessor 1, audio acquisition module 2, audio output module 3, video acquisition module 4, video output module 5, touch screen 6, RFID entrance guard reads card module 7, door magnetism signal interface 8, door lock switch interface 9, luminance detection module 10, infrared light filling lamp 11, wireless communication module 12 and power module 13, wherein, microprocessor 1 respectively with audio acquisition module 2, audio output module 3, video acquisition module 4, video output module 5, touch screen 6, RFID entrance guard reads card module 7, door magnetism signal interface 8, door lock switch interface 9, luminance detection module 10, infrared light filling lamp 11, wireless communication module 12 and power module 13 are connected.

The microprocessor 1 is used for storing or analyzing and processing the received signal and sending a control command or a transmission signal, and the analyzing and processing of the signal comprises the following steps: and converting the received audio and video analog signals into digital signals, or converting the audio and video digital signals into analog signals, and converting the analog signals according to requirements. The RFID entrance guard card reading module 7 is used for reading IC card information and transmitting the IC card information to the microprocessor 1, so that the functions of managing and storing the IC card information, controlling a door lock switch and the like by the microprocessor 1 are realized. The door lock switch interface 9 is used for being connected with a door magnetic switch of a door lock in a building in the community, and transmits the control command of the microprocessor 1 to the door magnetic switch, so that the microprocessor 1 of the building visual intercom host can control the door lock to be opened through the door lock switch interface 9.

The door magnetic signal interface 8 is used for being connected with a door lock in a building in a community, the door magnetic signal interface 8 transmits information of the door lock to the microprocessor 1, when the door lock is opened under the control of a building visual intercom host, the door is opened, if the door is not closed after time out, the door magnetic signal interface 8 transmits the information that the door is not closed to the microprocessor 1, then the microprocessor 1 reports the information that the door is not closed to a management center of the community through the wireless communication module 12, and the management center is requested to process the information.

The audio acquisition module 2 and the audio output module 3 realize the talkback function of the building visual talkback host together. The video acquisition module 4 and the video output module 5 realize the video communication function of the building video intercom host together.

The brightness detection module 10 is used for detecting the brightness of the surrounding environment and transmitting the brightness information to the microprocessor 1, the microprocessor 1 controls the infrared light supplement lamp 11 to be turned on or off according to the brightness information, and the infrared light supplement lamp 11 is used for emitting infrared rays for light supplement.

In this embodiment, the wireless communication module 12 is any one or a combination of any several of a 5G communication module, a 4G communication module, a bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module, and a LoRa module. Through setting up multiple wireless communication mode, not only can increase the flexibility of wireless communication mode, can also satisfy the demand of different users and different occasions. Especially, when adopting the loRa module, its communication distance is far away, and communication performance is comparatively stable, is applicable to the occasion that requires the communication quality to be higher. The adoption of the 5G communication mode can achieve high data rate, reduce delay, save energy, reduce cost, improve system capacity and realize large-scale equipment connection.

In this embodiment, the processor 1, the audio acquisition module 2, the audio output module 3, the video acquisition module 4, the video output module 5, the touch screen 6, the RFID entrance guard card reading module 7, the door magnetic signal interface 8, the door lock switch interface 9, the light brightness detection module 10, and the infrared light supplement lamp 11 are all implemented by using structures in the prior art, and the working principle thereof is also the working principle in the prior art, which is not described in detail herein.

Fig. 3 is a schematic circuit diagram of the power supply module in this embodiment, in fig. 3, the power supply module 13 includes a voltage input terminal Vin, a first resistor R1, a first diode D1, a first transistor Q1, a second transistor Q2, a third diode D3, a second resistor R2, a third transistor Q3, a third resistor R3, a fourth transistor Q4, a second regulator D2, a fourth potentiometer RP4, a fifth potentiometer RP5, a first capacitor C1 and a voltage output terminal Vo, wherein one end of the voltage input terminal Vin is connected to one end of the first resistor R1, an anode of the first diode D1, an anode of the third diode D3 and a collector of the third transistor Q3, a base of the second transistor Q2 is connected to a cathode of the first diode D1 and a collector of the first transistor Q1, a cathode 695 of the third diode D2 is connected to an emitter of the second transistor Q56, and the other end of the first resistor R1 is connected to one end of the first resistor R2, The base of a first triode Q1, the emitter of a first triode Q1, one end of a third resistor R3 and the other end of a voltage input end Vin are connected, the base of a third triode Q3 is respectively connected with the collector of a second triode Q2 and the collector of a fourth triode Q4, the emitter of a fourth triode Q4 is connected with the anode of a second voltage regulator D2, the emitter of a third triode Q3 is respectively connected with the other end of a second resistor R2, one fixed end of a fourth potentiometer RP4, the sliding end of a fourth potentiometer RP4, one end of a first capacitor C1 and one end of a voltage output end Vo, the other fixed end of a fourth potentiometer RP4 is connected with one fixed end of a fifth potentiometer RP5, the base of a fourth triode Q4 is connected with the sliding end of a fifth potentiometer RP5, the other end of a third resistor R3 is respectively connected with the cathode of a second voltage regulator D2, the other fixed end of the fifth potentiometer RP5, The other end of the first capacitor C1 is connected to the other end of the voltage output Vo.

Compared with the power supply part of the traditional doorway host machine in fig. 1, the power supply module 13 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the third diode D3 is a current limiting diode for current limiting protection of the emitter current of the second transistor Q2. The current limiting protection principle is as follows: when the emitter current of the second triode Q2 is large, the third diode D3 can reduce the emitter current of the second triode Q2 to keep the second triode Q2 in a normal working state, and the elements in the circuit are not burnt out due to too large current, so that the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the third diode D3 has a model number S-152T. Of course, in practical applications, the third diode D3 may also be another type of diode with the same function.

The working principle of the power supply module 13 is as follows: the first triode Q1 of the power supply module 13 is turned on, the second triode Q2 is turned on, the third triode Q3 is turned on, the output voltage is stabilized through sampling comparison of the fourth potentiometer RP4 and the fourth triode Q4, and the like, and meanwhile, the output voltage of the third triode Q3 is added to the base of the first triode Q1 through the second resistor R2, so that the normal operation of the circuit is maintained, the fifth potentiometer RP5 is a voltage-regulating potentiometer which can change the output voltage, when the voltage rises, the output voltage rises, the base voltage of the fourth triode Q4 rises, the collector voltage drops, the base voltage of the third triode Q3 is pulled down, and the output voltage of the voltage output end Vo is stabilized.

In this embodiment, the first transistor Q1 is an NPN transistor, the second transistor Q2 is a PNP transistor, and the third transistor Q3 is an NPN transistor. Certainly, in practical applications, the first transistor Q1 and the third transistor Q3 may both be PNP transistors, and the second transistor Q2 may also be NPN transistors, but the circuit structure is also changed accordingly.

In this embodiment, the power supply module 13 further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the base of the third transistor Q3, and the other end of the sixth resistor R6 is connected to the collector of the fourth transistor Q4. The sixth resistor R6 is a current limiting resistor, and is used for current limiting protection of the base current of the third transistor Q3. The current limiting protection principle is as follows: when the base current of the third triode Q3 is large, the base current of the third triode Q3 can be reduced by the sixth resistor R6 to keep the base current in a normal working state, so that the elements in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 32k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted accordingly, that is, the resistance of the sixth resistor R6 may be increased or decreased accordingly.

In short, in this embodiment, compared with the power supply part of the conventional door host, the power supply module 13 has fewer components, a simpler circuit structure, and convenience in maintenance, and can reduce hardware cost due to the fact that some components are saved. In addition, the power supply module 13 is provided with a current limiting diode, so that the safety and the reliability of the circuit are high.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A building intercom host is characterized by comprising a microprocessor, an audio acquisition module, an audio output module, a video acquisition module, a video output module, a touch screen, an RFID entrance guard card reading module, a door magnetic signal interface, a door lock switch interface, a brightness detection module, an infrared light supplement lamp, a wireless communication module and a power supply module, wherein the microprocessor is respectively connected with the audio acquisition module, the audio output module, the video acquisition module, the video output module, the touch screen, the RFID card reading entrance guard module, the door magnetic signal interface, the door lock switch interface, the brightness detection module, the infrared light supplement lamp, the wireless communication module and the power supply module;

the power supply module comprises a voltage input end, a first resistor, a first diode, a first triode, a second triode, a third diode, a second resistor, a third triode, a third resistor, a fourth triode, a second voltage-regulator tube, a fourth potentiometer, a fifth potentiometer, a first capacitor and a voltage output end, wherein one end of the voltage input end is connected with one end of the first resistor, the anode of the first diode, the anode of the third diode and the collector of the third triode respectively, the base of the second triode is connected with the cathode of the first diode and the collector of the first triode respectively, the cathode of the third diode is connected with the emitter of the second triode, and the other end of the first resistor is connected with one end of the second resistor, the base of the first triode and the emitter of the first triode respectively, One end of the third resistor is connected with the other end of the voltage input end, the base of the third triode is respectively connected with the collector of the second triode and the collector of the fourth triode, the emitter of the fourth triode is connected with the anode of the second voltage-regulator tube, the emitter of the third triode is respectively connected with the other end of the second resistor, one fixed end of the fourth potentiometer, the sliding end of the fourth potentiometer, one end of the first capacitor and one end of the voltage output end, the other fixed end of the fourth potentiometer is connected with one fixed end of the fifth potentiometer, the base of the fourth triode is connected with the sliding end of the fifth potentiometer, the other end of the third resistor is respectively connected with the cathode of the second voltage-regulator tube, the other fixed end of the fifth potentiometer, the base of the third triode, the collector of the fourth potentiometer, the, The other end of the first capacitor is connected with the other end of the voltage output end.

2. A door entry host as claimed in claim 1 wherein said third diode is of type S-152T.

3. The door phone host of claim 2, wherein the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected to the base of the third transistor, and the other end of the sixth resistor is connected to the collector of the fourth transistor.

4. A building intercom main unit as in claim 3, wherein said sixth resistor has a resistance of 32k Ω.

5. A door intercom host as in any one of claims 1-4, wherein said first transistor is an NPN transistor.

6. A door intercom host as in any one of claims 1-4 wherein said second transistor is a PNP type transistor.

7. A door intercom according to any one of claims 1 to 4, wherein said third transistor is an NPN transistor.

8. The building intercom host according to any one of claims 1 to 4, wherein the wireless communication module is any one or a combination of any several of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module.