TWI604420B - Anti-disassembly interphone apparatus and anti-disassembly security system - Google Patents

Description

Vandal-proof intercom equipment and anti-destruction security system

The present invention provides an intercom device, and more particularly to an intercom device that prevents damage.

In order to confirm the identity of the visitor or to talk to visitors outside the door, various types of intercom devices are set up in the home or office. Since the intercom equipment is often installed outside the door or outdoors, the probability of being subjected to malicious damage is high, which in turn affects the safety of the residents, and an effective solution is to be provided.

In one embodiment, the present invention provides a vandal resistant intercom device including a mount, a magnet, and a walkie-talkie. The magnet is placed on the holder and generates a magnetic field around the magnet. The intercom device is placed on the mount and is located within the magnetic field. The intercom device includes a housing, a control unit, an intercom unit, and a magnetic field detecting unit. The control unit is disposed on the housing. The intercom unit is disposed on the housing and connected to the control unit. The magnetic field detecting unit is disposed on the housing corresponding to the magnet and connected to the control unit. The detecting magnetic field detecting unit is within the magnetic field range and generates a potential signal according to the detection result. The control unit receives the potential signal and outputs an abnormal signal when the potential signal is a preset potential.

In an embodiment, the wireless communication unit is disposed on the housing and connected to the control list The wireless communication unit receives the abnormal signal and sends a broadcast signal.

In an embodiment, the magnetic field detecting unit of the tamper-proof intercom device includes a Hall sensor, a differential amplifier, a hysteresis circuit, a temperature compensation circuit, a voltage regulator, and a driving circuit, and the Hall sensor is used for The magnetic field is detected and the drive circuit is connected to the Hall sensor. The differential amplifier is connected to the Hall sensor, and the hysteresis circuit is connected to the differential amplifier and the driving circuit, and the driving circuit generates the potential signal according to the detection result. The temperature compensation circuit is connected to the differential amplifier and the hysteresis circuit. The voltage regulator is connected to the Hall inductor, the differential amplifier, the hysteresis circuit, and the drive circuit.

In an embodiment, the magnetic field detecting unit of the tamper-proof intercom device provided in the present invention is disposed on a side of the housing adjacent to the fixing frame.

In one embodiment, the magnet of the tamper-proof intercom device provided by the present invention is disposed at a central portion of the holder. It can be prevented from being interfered by other external magnetic objects and affecting the anti-vandal function of the anti-vandal intercom.

In an embodiment, the intercom device of the anti-vandal intercom device further includes a speaker unit, and the speaker unit is connected to the control unit, and the control unit receives the potential signal and outputs the chirping sound via the speaker unit.

In an embodiment, the intercommunication device of the tamper-proof intercom device further includes a lighting unit, the lighting unit is connected to the control unit, the lighting unit is disposed on an outer surface of the housing, and the control unit receives the potential signal and passes through the lighting unit. Give a warning light.

In an embodiment, the intercom unit of the tamper-proof intercom device further includes a photographic module, and the control unit receives the potential signal and notifies the photographic module to turn on the photographic mode.

In another embodiment, the present invention provides a vandal proof security system including the above Destructive intercom equipment and switches. The tamper-proof intercom device includes a photographic module to obtain audio and video recording, and the switch communication connects the tamper-proof intercom device to transmit the video and audio recording.

In an embodiment, the tamper-proof intercom device of the tamper-resistant security system provided by the present invention receives a control signal sent by the handheld device via the switch, and the control unit of the tamper-proof intercom device generates an operation signal according to the control signal. The control unit of the tamper-proof intercom device notifies the photographic module to turn on the photographic mode according to the operation signal to obtain the video recording.

In an embodiment, the control unit of the tamper-proof intercom device of the tamper-proof security system provided by the present invention responds to the abnormal signal and notifies the photographic module to turn on the photographic mode to obtain the video recording.

In an embodiment, the anti-vandal preservation system provided by the present invention includes a security host, and the security host receives the audio and video recording via the switch.

In one embodiment, the tamper-resistant security system provided by the present invention includes a network video recorder that receives and stores audio and video recordings via a switch. In still another embodiment, the network video recorder receives the control signal sent by the handheld device via the switch, and the network video recorder sends the video recording according to the control signal.

In summary, according to the anti-destruction intercom device and the anti-destruction security system of the embodiment of the present invention, since the potential signal outputted by the driving circuit is proportional to the magnetic field strength, the distance between the magnet and the magnetic field detecting unit can be determined according to whether A change is made to detect whether the vandalism device has been damaged. In the event of damage, the emergency contact person's handheld device or security host can be notified by the abnormal signal output, and other people's attention can be caused by squeaking, warning light, etc., to avoid further damage to the intercom equipment. Anti-destructive intercom equipment turns on photography if it is damaged Pattern to save corrupted evidence. The control signal sent by the handheld device via the Internet can remotely operate the anti-vandal intercom device and improve the multi-function performance of the device.

1, 1A~1C‧‧‧ anti-vandal intercom equipment

2‧‧‧Security host

3, 3A~3C‧‧‧ handheld devices

4‧‧‧Switch

5‧‧‧ camera

6‧‧‧Pushing server

7‧‧‧Network video recorder

8‧‧‧PC

10‧‧‧ intercom

11‧‧‧Shell

12‧‧‧Control unit

13‧‧‧Intercom unit

131‧‧‧Photography module

132‧‧‧Call module

133‧‧‧Access Control Module

14‧‧‧Wireless communication unit

15‧‧‧Magnetic field detection unit

151‧‧‧ Hall sensor

152‧‧‧ drive circuit

153‧‧‧Differential Amplifier

154‧‧‧hysteresis circuit

155‧‧‧ Temperature compensation circuit

156‧‧‧ Voltage Regulator

16‧‧‧ Speaker unit

17‧‧‧Lighting unit

18‧‧‧ storage unit

20‧‧‧ magnet

30‧‧‧Retaining frame

40‧‧‧ wall

1 is a side view of a tamper-proof intercom apparatus according to an embodiment of the present invention; [FIG. 2] is a system block diagram of a tamper-proof intercom apparatus according to an embodiment of the present invention; [FIG. 3] is an embodiment of the present invention. FIG. 4 is a block diagram of a system of a magnetic field detecting unit according to an embodiment of the present invention; [FIG. 5] is a block diagram of a vandal proofing system according to an embodiment of the present invention; [FIG. 6] A block diagram of a vandal-proof security system according to another embodiment of the present invention; [FIG. 7] is a structural diagram of a vandal-proof security system according to an embodiment of the present invention; [FIG. 8] is a vandal-proof security system according to still another embodiment of the present invention. FIG. 9 is a structural diagram of a vandal-proof security system according to another embodiment of the present invention.

1 is a side view of a vandal resistant intercom device in accordance with an embodiment of the present invention. The vandal resistant intercom device 1 includes a mount 30, a magnet 20, and a walkie-talkie 10. The fixing frame 30 is disposed on the wall surface 40. The magnet 20 is disposed on the holder 30. The intercom device 10 is disposed on the mount 30. The magnetic field detecting unit 15 of the intercom device 10 is disposed on the casing 11 of the intercom device 10 corresponding to the magnet 20. The magnetic field detecting unit 15 detects whether the intercom device 10 is within the magnetic field generated by the magnet 20 and generates a potential signal according to the detection result. Whether or not the magnetic field detecting unit 15 is within the range of the magnetic field generated by the magnet 20 is detected to detect whether it is damaged.

2 is a system block diagram of a vandal proof intercom device in accordance with an embodiment of the present invention. The intercom device 10 further includes a control unit 12, an intercom unit 13, and a wireless communication unit 14. The control unit 12, the intercom unit 13 and the wireless communication unit 14 are all disposed on the housing 11. The intercom unit 13, the wireless communication unit 14 and the magnetic field detecting unit 15 are electrically connected to the control unit 12. The control unit 12 stores a preset potential, and the control unit 12 receives the potential signal and determines that the potential signal reaches the preset potential and outputs an abnormal signal. In some embodiments, the control unit 12 can be implemented by a Central Processing Unit (CUP), an integrated circuit (IC), a microprocessor (Microprocessor), a chip, etc., and is not implemented. To the above examples. In some embodiments, the control unit 12 can provide at least two or more sets of AI (Analog Input signal input), AO (Analog Output signal output), DI (Digital Input digital signal input), or DO (Digital Output digital signal). Output), etc., is not limited to this.

The wireless communication unit 14 is configured to provide remote data transmission or remote control of the intercom device 10. In some embodiments, the far end may refer to another intercom device, a security host, other handheld electronic devices, and the like. In some embodiments, the wireless communication unit 14 is disposed on the housing 11 and connected to the control unit 12, and the wireless communication unit 14 receives the abnormal signal and transmits the broadcast signal. The situation in which the intercom device 10 is damaged by the broadcast signal is notified to others to provide further strain processing. The wireless communication unit 14 can be powered by GSM, GPRS, 3G, 4G, near field communication, ZigBee, Bluetooth, WLAN, Lan, Wifi, etc., and is not limited to the above examples.

3 is a perspective view of a vandal-proof intercom apparatus according to an embodiment of the present invention. The intercom unit 13 is used to provide the vandalism intercom device 1 to confirm the identity of the visitor or to talk to the outside visitor. In some real In the embodiment, the intercom unit 13 can include a camera module 131, a call module 132, and an access module 133. Referring to FIG. 3, the camera module 131 can obtain a visitor image by using a lens, and the visitor image can be output via the wireless communication unit 14 for confirming the identity of the visitor. The call module 132 can provide a call function, such as two-way simplex voice and two-way duplex voice. In some embodiments, the camera module 131 and the call module 132 can also be combined into a video module. The access module 133 can provide an unlocking function. In some embodiments, the access control module 133 can be implemented by a fingerprint reader, a password unlocker, an iris recognizer, an RFID sensor, a card reader, etc., and is not limited to the above examples. In some embodiments, the intercom unit 13 further includes a doorbell button. When the visitor presses the doorbell button, the call module 132 is activated, or the camera module 131 can be activated at the same time. In some embodiments, the camera module 131 can add lenses of different viewing angles as needed.

The magnetic field detecting unit 15 is connected to the control unit 12. The magnetic field detecting unit 15 is disposed on the casing 11 corresponding to the position of the magnet 20. The magnetic field detecting unit 15 detects whether or not the distance from the magnet 20 has changed. In other words, the magnet 20 generates a fixed magnetic field range within a certain range, the magnetic field detecting unit 15 continuously detects the state of the magnetic field range, and the magnetic field detecting unit 15 generates a potential signal according to the detection result. For example, when the preset potential in the control unit 12 is high, the detection result includes at least the potential signal outputted by the magnetic field detecting unit 15 in the magnetic field generated by the magnet 20 being low, or when the magnetic field is detected. The potential signal outputted by the unit 15 outside the magnetic field generated by the magnet 20 is high. That is to say, when the intercom device 10 is located in the magnetic field range, the potential signal output by the magnetic field detecting unit 15 is low, and when the intercom device 10 is outside the magnetic field range, the output of the magnetic field detecting unit 15 is turned into high. Potential (high). The control unit 12 receives the potential signal and determines whether the content of the potential signal reaches a preset potential. In other words, when the control unit 12 When it is judged that the potential signal is a transition, the control unit 12 outputs an abnormal signal.

4 is a system block diagram of a magnetic field detecting unit according to an embodiment of the present invention. In some embodiments, the magnetic field detecting unit 15 is implemented by a unipolar Hall-sensing signal generator or a Hall-sensing signal switch. The magnetic field detecting unit 15 includes a Hall sensor 151 and a driving circuit 152. The Hall sensor 151 is used to detect changes in the magnetic field, or to measure physical quantities (eg, distances) that may affect the magnetic field. In other words, the Hall sensor 151 is a transducer that converts a change in a magnetic field into a change in output voltage. For example, when the Hall sensor 151 senses a South Pole magnetic field on the front side, the output changes from a high level to a low level (low) when the magnetic field deviates from the magnetic induction range of the Hall sensor 151 or the Hall sensor 151. The output changes to high when the north magnetic field is sensed. In some embodiments, the high voltage is output when the Hall sensor 151 is within the south pole magnetic field of the magnet 20, and the low voltage is output when the Hall sensor 151 is out of the south pole magnetic field range of the magnet 20. The voltage transition is output via the drive circuit, and the potential signal is output according to the detection result of the magnetic field by the Hall sensor 151. In some embodiments, the magnetic field detecting unit 15 can be more than one and disposed at different locations to enhance detection of changes in magnet position. Control unit 12 monitors changes in the potential signal to make subsequent strain operations.

Referring to FIG. 4 , in some embodiments, the magnetic field detecting unit 15 further includes a differential amplifier 153 , a hysteresis circuit 154 , a temperature compensation circuit 155 , and a voltage regulator 156 . The differential amplifier 153 is connected to the Hall inductor 151, the hysteresis circuit 154 is connected to the differential amplifier 153 and the drive circuit 152, and the temperature compensation circuit 155 is connected to the differential amplifier 153 and the hysteresis circuit 154. The differential amplifier (DA) of the magnetic field detecting unit 15 can amplify the difference of the input signal, and It can eliminate the interference of noise and improve the stability of the potential signal. In some embodiments, the magnetic field detecting unit 15 including the temperature compensating circuit 155 can prevent the correctness of the detection result from being affected by the temperature change. In some embodiments, the hysteresis circuit 154 of the magnetic field detecting unit 15 can adjust the sensitivity of the magnetic field detecting unit 15. In other words, the magnetic field strength must be greater than the first set value, the output voltage will become low, and when the magnetic field strength is less than the second set value, the output voltage will become high. In some embodiments, the magnetic field detecting unit 15 includes a voltage regulator 156 connected to the Hall inductor 151, the differential amplifier 153, the hysteresis circuit 154, and the driving circuit 152. The voltage regulator 156 is used to supply The components of the magnetic field detecting unit 15 are stably powered to ensure the operational stability of the magnetic field detecting unit 15.

Continue to refer to Figure 1. In some embodiments, the magnetic field detecting unit 15 of the tamper-proof intercom device 1 is disposed on a side of the housing 11 adjacent to the mounting bracket 30. In other words, the magnetic field detecting unit 15 is disposed at the bottom of the casing 11. It can also be said that when the intercom device 10 is coupled to the mount 30, the magnetic field detecting unit 15 is in close proximity to the wall surface 40. Therefore, the magnetic field detecting unit 15 can avoid interference from other external magnetic fields. The engaging unit of the fixing frame 30 and the intercom device 10 can be engaged by hooking, screwing or adhesive. The magnetic field detecting unit 15 also avoids being close to the engaging unit, so that when the tamper-proof intercom device 1 is broken, the magnetic field detecting unit 15 is also damaged and an abnormality signal cannot be output.

In some embodiments, the magnet 20 of the tamper-proof intercom device 1 is disposed at a central portion of the mount 30. In other words, when the magnet 20 is disposed, it is kept at a certain distance from the outer frame of the fixing frame to prevent the abnormality signal from being output due to the destruction of the magnet 20 or the magnetic field detecting unit 15 when the side surface of the tamper-proof intercom device 1 is invaded.

In some embodiments, the intercom device 10 of the tamper-proof intercom device 1 further includes a speaker unit 16, the speaker unit 16 is electrically connected to the control unit 12, and the control unit 12 receives the potential signal and outputs the signal through the speaker unit 16. Tweets. In other words, when the control unit 12 determines that the potential signal is abnormal, the control command for the speaker unit 16 is output, so that the loudspeaker of the speaker unit 16 emits a squeaking sound to generate a deterrent effect, and the tamper-proof intercom device 1 is avoided. It was further destroyed. The loudspeaker of the speaker unit 16 can be realized by a separate buzzer or by sharing the broadcast horn with the talk module 132.

In some embodiments, the intercom device 10 of the tamper-proof intercom device 1 further includes a lighting unit 17 , and the lighting unit 17 is electrically connected to the control unit 12 . Refer to Figure 2. In some embodiments, the illumination unit 17 is disposed on an outer surface of the housing 11, and the control unit 12 receives the potential signal and emits an alert light via the illumination unit 17. In some embodiments, lighting unit 17 can include one or more illuminators (eg, LED lights). In some embodiments, the plurality of illuminators of illumination unit 17 can emit light of different colors. In some embodiments, the illuminator of the illumination unit 17 can be disposed near the lens of the photographic module 131. For example, as shown in FIG. 1, three illuminators are respectively disposed on the left and right sides of the lens, and the illuminator assists when the lens acquires the image. Lighting for a clearer image. In some embodiments, when the control unit 12 determines that the potential signal is abnormal, the control command for the illumination unit 17 is output, so that the illuminator of the illumination unit 17 alternately emits light, which is similar to the police flash (red-green flash). In order to create a deterrent effect, the anti-destructive intercom device 1 is further destroyed.

In some embodiments, when the control unit 12 determines that the potential signal is abnormal, the camera module 131 of the intercom unit 13 of the interrogation device 1 is tamper-proof, and the control unit 12 receives the potential signal. And the photography module 131 is notified to turn on the photography mode. The image acquired by the photography module 131 may include an appearance of the person intending to destroy the intercom device, and the acquired image may be output or stored in the storage unit 18 of the vandal resistant intercom device 1 via the wireless communication unit 14.

Figure 5 is a block diagram of a vandal proof security system in accordance with an embodiment of the present invention. In some embodiments, the present invention provides a vandal-proof security system including the vandal-proof intercom devices 1A-1C, the security host 2, and the handheld devices 3A-3B as described above. The handheld devices 3A-3B include a network communication unit to receive the abnormal signals transmitted by the tamper-proof intercom devices 1A~1C. In some embodiments, the security host 2 can also receive an exception signal. The content of the abnormal signal may include the video recording obtained by the camera module 131, the location of the vandal-proof interrogation device 1, the number or GPS positioning coordinates, the time when the abnormal condition occurs, and the like.

Continue to refer to Figure 5. In some embodiments, taking a residential community as an example, the security room of the residential community is provided with a security host 2. The abnormality signal outputted by the wireless communication unit of the tamper-proof intercom device 1A may be provided by the security communication host 2 and the network communication unit of the handheld device 3A of the first household. receive. The non-destructive intercom device 1B is disposed outside the door of the second household, and the abnormal signal outputted by the wireless communication unit of the anti-vandal intercom device 1B can be received by the network communication unit of the handheld device 2B of the security host 2 and the second household. The occlusion device 1C is disposed outside the door of the third household, and the abnormal signal output by the wireless communication unit of the tamper-proof intercom device 1C can be received by the network communication unit of the handheld device 3C of the security host 2 and the third household.

6 is a block diagram of a vandal proof security system in accordance with another embodiment of the present invention. In some embodiments, taking a factory as an example, the control center of the factory is provided with a security host 2. First entry and exit The port is provided with a vandal-proof intercom device 1A, the second port is provided with a vandal-proof intercom device 1B, and the third port is provided with a vandal-proof intercom device 1C. The abnormal signal outputted by the wireless communication unit of the tamper-proof intercom devices 1A to 1C can be received by the network communication unit of the handheld device 3 and the factory manager's handheld device 3A.

It can be seen from the foregoing embodiments that the number of security hosts, tamper-proof intercom devices, and handheld devices can be configured according to the required alert range and working conditions, and is not limited to the above. In some embodiments, the security host 2 may also be located at a security center's control center. Among them, the handheld devices 3A~3C can be realized by smart phones, tablets, notebook computers, and the like. For example, the handheld device 3A can download an application (APP) dedicated to the tamper-resistant security system to be connected to the tamper-proof intercom devices 1A-1C.

In some embodiments, the network communication unit of the handheld device 3A of the tamper-resistant security system can be communicatively coupled to the wireless communication unit 14 of the tamper-proof intercom device 1 via the switch 4. The handheld device 3A sends a control signal to the wireless communication unit 14 of the tamper-proof intercom device 1 via the Internet. The wireless communication unit 14 transmits a control signal to the control unit 12, and the control unit 12 receives the control signal and generates an operation signal according to the control signal. For example, when the handheld device 3A of the first household receives the image of the visitor obtained by the lens of the tamper-proof intercom device 1A, the first resident determines that the door lock can be opened for the visitor, and the network communication unit of the handheld device 3A passes through the Internet. The operation signal of the road door lock opening is transmitted to the wireless communication unit 14 of the tamper-proof intercom device 1. The control unit 12 receives the operation signal of the door lock opening and opens the door lock according to the operation signal, so that the visitor can smoothly enter.

In some embodiments, the network communication unit of the handheld device 3A is through the Internet. The road transmits a pre-recorded file to the wireless communication unit 14 of the tamper-proof intercom device 1, and the control unit 12 stores the pre-recorded file and stores it in the storage unit 18. When the visitor presses the doorbell button of the tamper-proof intercom device 1, the defense Destroy the intercom device 1 to play the pre-recorded file. The storage unit 18 can be implemented by an external memory card, such as a Micro SD card, built-in memory, such as dynamic random access memory (DRAM), static random access memory (SRAM). In some embodiments, the audio and video recordings stored in the storage unit 18 (the audio and video recordings may include: instant images, visitor images, recordings, call content, etc.) may be classified according to settings (eg, according to timing, trigger events, etc.) And play or output according to the remote command. The file format stored by the storage unit 18 may include H.264/M-JPEG format, MP3, MP4, JPG, GIF, PNG, BMP, TIFF, RAW, AVI, etc., or other image editing according to requirements or The compression method is not limited to the above examples.

In some embodiments, the vandal resistant intercom device 1 is provided with a proprietary IP for other external devices to connect to the vandal resistant intercom device 1. Among them, other external devices can be connected by smart phone, security host or through webpage mode. In some embodiments, the vandal-prevention system includes a switch 4 that communicates with the vandal-proof device to transmit video and audio recordings.

FIG. 7 is a structural diagram of a vandal proof security system according to an embodiment of the present invention. In some embodiments, the vandal-prevention system can include a switch 4 and a security host 2. The abnormal signal or video recording of the tamper-proof intercom device 1 can be sent out via the switch 4, and the security host 2 can receive the abnormal signal or video recording via the switch 4. Switch 4 is used to transfer messages or classify messages between different devices, that is, to form a regional network between different devices. The switch 4 can be implemented by a hub, a switch, an IP sharer, a router, and the like. In some embodiments, when the doorbell button of the tamper-proof intercom device 1 is pressed, In addition to the camera module 131 of the intercom unit 13 of the tamper-proof intercom device 1, the signal notification of the switch 4 can also be used to simultaneously activate another camera 5, and the image of the person who presses the doorbell button is obtained from different angles, and The images obtained by the user are transmitted to the security host 2. In other words, the security host 2 can issue an operation command to the tamper-proof intercom device 1 and the camera 5 through the switch 4, or simultaneously receive the video recordings returned by the tamper-proof intercom device 1 and the camera 5.

FIG. 8 is a structural diagram of a vandal proof security system according to still another embodiment of the present invention. In some embodiments, the abnormality signal of the tamper-proof intercom device 1 is sent to the Internet via the switch 4, and the security host 2 receives the abnormal signal via the Internet. In some embodiments, the handheld device 3A or the handheld device 3B may receive an abnormal signal directly via the Internet or may receive an abnormal signal via the switch 4. In some embodiments, the control unit of the tamper-proof intercom device 1 responds to the abnormal signal and notifies the photographic module to turn on the photographic mode to obtain the video recording, wherein the abnormal signal may be an abnormal signal sent by the tamper-proof intercom device 1A itself. It may also be an abnormal signal sent by another adjacent vandal-proof intercom device 1B.

In some embodiments, the tamper-proof intercom device 1 can also receive the control signal sent by the handheld device 3A or the handheld device 3B via the switch 4. The control unit of the tamper-proof intercom device 1 generates an operation signal according to the control signal, so that the user can The tamper-proof intercom device 1 is remotely controlled using the handheld device 3A/3B. For example, the control unit of the tamper-proof intercom device 1 notifies the photographic module to turn on the photographic mode according to the operation signal to generate a video recording. This video recording can be transmitted to the handheld device 3A or the handheld device 3B that issues the control signal via the switch 4 in an instant streaming manner.

In some embodiments, in order to ensure that the abnormal signal can be transmitted to the handheld device 3A more efficiently, the abnormal signal of the anti-vandal intercom device 1 is sent to the Internet via the switch 4. And the push server 6 receives the abnormal signal via the Internet. The push notification transmitted by the push server 6 can be actively displayed on the handheld device 3A. In some embodiments, the push server 6 refers to a push server of a telecommunications service provider, and a better service delivery efficiency can be achieved through a wide range of services covered by the telecommunications service. The management background of the push server 6 can see various data such as the push open rate and the push open open rate, and also provides a reference for the routine maintenance or efficiency review of the anti-vandal preservation system.

FIG. 9 is a structural diagram of a vandal proof security system according to another embodiment of the present invention. In some embodiments, the tamper-resistant security system includes a Network Video Recorder 7 that receives and stores video and audio recordings via the switch 4. The stored video recordings can be from multiple tamper-resistant recordings. Intercom equipment or other camera 5. In some embodiments, the network video recorder 7 receives the control signal sent by the handheld device 3 via the switch 4, and the network video recorder 7 sends the audio and video recording to the handheld device 3 via the switch 4 according to the control signal. Thereby, the specific video recording stored by the network video recorder 7 can be displayed on the handheld device 3.

In summary, the tamper-proof intercom device 1 can secure the host 2, the network video recorder 7, the camera 5 or the personal computer 8 through an internet connection as needed, and the tamper-proof intercom device 1 can transmit an abnormal message to the above. Each device, the tamper-proof intercom device 1 can also be operated by receiving an operation command from each of the above devices, and can be flexibly applied and connected according to the requirements of use.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. Therefore, the scope of protection of the present invention is subject to the definition of the scope of the appended patent application.

1‧‧‧Anti-vandal intercom equipment

10‧‧‧ intercom

11‧‧‧Shell

15‧‧‧Magnetic field detection unit

20‧‧‧ magnet

30‧‧‧Retaining frame

40‧‧‧ wall

Claims (15)

A tamper-proof intercom device includes: a fixing frame; at least one magnet disposed on the fixing frame to generate a magnetic field range; and a pair of speaking devices disposed on the fixing frame, the intercom device comprising: a housing a control unit disposed on the housing; a pair of speaking units connected to the control unit and disposed on the housing; and a magnetic field detecting unit connected to the control unit, wherein the magnet is disposed on the housing And detecting whether the magnetic field detecting unit is within the magnetic field and generating a potential signal according to a detection result, the control unit receiving the potential signal and outputting an abnormal signal when the potential signal is a preset potential. The tamper-proof intercom device of claim 1, wherein the magnetic field detecting unit comprises: a wireless communication unit connected to the control unit, disposed on the casing, the wireless communication unit receiving the abnormal signal and transmitting a broadcast Signal. The tamper-proof intercom device of claim 1, wherein the magnetic field detecting unit comprises: a Hall sensor for detecting the magnetic field; a differential amplifier connected to the Hall sensor; and a hysteresis circuit connected The differential amplifier and a driving circuit connected to the hysteresis circuit to generate the potential signal according to the detection result; a temperature compensation circuit connected to the differential amplifier and the hysteresis circuit; and a voltage regulator connected to the Hall sensor The differential amplifier, the hysteresis circuit, and the drive circuit. The tamper-proof intercom device of claim 1, wherein the magnetic field detecting unit is disposed inside a side of the housing adjacent to the fixing frame. The tamper-proof intercom device of claim 4, wherein the magnet is disposed at a central portion of the holder. The tamper-proof intercom device of claim 1, wherein the intercom device further comprises a speaker unit connected to the control unit, the control unit receiving the potential signal and outputting a squeak via the speaker unit. The tamper-proof intercom device of claim 1, wherein the intercom device further includes a lighting unit connected to the control unit, the lighting unit is disposed on an outer surface of the housing, and the control unit receives the potential signal and An alert light is emitted via the lighting unit. The tamper-proof intercom device of claim 1, wherein the intercom unit further includes a photographic module, and the control unit receives the potential signal and notifies the photographic module to activate a photographic mode. A tamper-proof security system, comprising: the tamper-proof intercom device according to any one of claims 1 to 7, wherein the tamper-proof intercom device further comprises a photographic module, and the photographic module obtains a video recording; And a switch, the communication connection is connected to the anti-vandal intercom device to transmit the video recording. The tamper-resistant security system of claim 9, wherein the tamper-proof intercom device receives a control signal sent by a handheld device via the switch, and the control unit of the tamper-proof intercom device generates an operation signal according to the control signal. . The tamper-resistant security system of claim 10, wherein the control unit of the tamper-proof intercom device notifies the photographic module to activate a photographic mode to obtain the video recording according to the operation signal. The tamper-resistant security system of claim 9, wherein the control unit of the tamper-proof intercom device notifies the photographic module to activate a photographic mode to generate the video recording in response to the abnormal signal. The anti-destruction security system of claim 9, further comprising a security host, the security host receiving the video recording via the switch. The tamper-resistant security system of claim 9, further comprising a network video recorder, the network video recorder receiving and storing the video recording via the switch. The tamper-resistant security system of claim 14, wherein the network video recorder receives a control signal from a handheld device via the switch, and the network video recorder transmits the video recording to the audio signal according to the control signal to the The handheld device.