Door opening control device and method in building talkback entrance machine

Abstract

The invention discloses a door opening control device and method in a building talkback entrance machine, and relates to the technical field of building talkback entrance machines. The device comprises an MCU module used for obtaining an inward door opening signal generated by an inward door opening circuit and sending an unlocking signal to an unlocking circuit; the CPU is connected with the MCU module and interacts control signals and door opening data with the MCU module; the CPU power supply module is connected with the main power supply and supplies power to the CPU; the standby power supply module at least comprises a charging and discharging management module and a battery and is used for being connected with a main power supply and continuously supplying power to the MCU module, the inner door opening circuit and the unlocking circuit, when the voltage of the main power supply is normal, the main power supply is used for supplying power and charging the battery, and when the voltage of the main power supply is abnormal, the battery is used for supplying power. According to the internal door opening control device and method for the building talkback entrance machine, it is guaranteed that the internal door opening function is available at any time, and the stability and safety of the entrance machine are improved.

Description

Technical Field

[0001] The invention relates to the technical field of building intercom door machines, and in particular to a door opening control device and method in a building intercom door machine. Background Art

[0002] The door phone is one of the more important devices in the building intercom system. It is responsible for identity recognition, calling, remote monitoring and door opening. Among them, the door opening function is one of the most commonly used functions. Door opening is divided into: external door opening and internal door opening. External door opening can be authorized by the property management or the owner; internal door opening is mostly done by pressing the internal door opening button on the wall inside the corridor. The internal door opening button signal is connected to the door phone. The door phone receives the internal door opening signal and then outputs the door opening signal.

[0003] Most of the common outdoor phones on the market are installed with Android or Linux systems, and the CPU is connected to the above signals. When the outdoor phone crashes, restarts, or is remotely upgraded, the inner door opening function is almost ineffective, and it is necessary to wait for the system to start before it can be controlled. At this time, if you encounter an emergency, you will not be able to go out in the first time. At the same time, there are also applications where the outdoor phone and door lock are powered independently. When the power supply of the lock is normal, but the power supply of the outdoor phone is abnormal, the inner door opening function will also fail, and the above problems will also occur. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a building intercom door machine internal door opening control device and method, which controls the unlocking by receiving the door opening signal through the built-in MCU, and sets a standby power supply module to continuously power the MCU module, the internal door opening circuit and the unlocking circuit, so as to ensure that the internal door opening function is available almost at any time, thereby improving the stability and safety of the door machine.

[0005] In a first aspect, the present invention provides a door opening control device in a building intercom door machine, comprising:

[0006] MCU module, used to obtain the inner door opening signal and send the unlocking signal;

[0007] A CPU is connected to the MCU module and exchanges control signals and door opening data with the MCU module;

[0008] CPU power module, connected to the main power supply and providing power to the CPU;

[0009] The standby power module includes a charge and discharge management module and a battery, which is used to connect to the main power supply and continuously supply power to the MCU module, the internal door opening circuit and the unlocking circuit. When the main power supply voltage is normal, the main power supply is used to supply power and charge the battery. When the main power supply voltage is abnormal, the battery is used to supply power.

[0010] Furthermore, the CPU power module is also connected to the MCU module to receive a power control signal from the MCU module.

[0011] Furthermore, it also includes an RTC module connected to the MCU module.

[0012] Furthermore, the CPU and MCU use I2C to exchange signal data.

[0013] In a second aspect, the present invention provides a door opening control method in a building intercom door machine, comprising:

[0014] When the MCU module obtains the inner door opening signal generated by the inner door opening circuit, it sends out an unlocking signal; when the MCU module obtains the outer door opening signal from the CPU, it sends out an unlocking signal;

[0015] When the main power voltage is normal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the main power supply. When the main power voltage is abnormal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the battery to ensure constant standby power supply.

[0016] Furthermore, when the MCU module finds that the CPU has timed out abnormally and the reset is invalid, it controls the CPU power module to restart.

[0017] Furthermore, the MCU module can send a reset signal to the CPU to cause the CPU to execute a reset; the CPU can send a reset signal to the MCU module to cause the MCU module to execute a reset.

[0018] Furthermore, when the main power supply voltage is abnormal, the unlocking information is recorded by the RTC module, and then when the main power supply voltage is normal, the unlocking information is transmitted back to the CPU.

[0019] The technical solution provided in the embodiments of the present invention has at least the following technical effects:

[0020] Through the built-in MCU module, the inner door opening circuit and the unlocking circuit are connected to the MCU module for control. At the same time, the MCU module, the inner door opening circuit and the unlocking circuit are continuously powered by the standby power module. Therefore, when the main control CPU system of the outdoor machine is restarted, crashed, or remotely upgraded, the relevant functions are controlled by the MCU module, and there is no need to worry about the inner door opening function failing; when the power supply of the outdoor machine is abnormal, there is no need to worry about the inner door opening function failing.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0023] Figure 1 It is a structural schematic diagram of the device in the first embodiment of the present invention;

[0024] Figure 2 This is a flow chart of the method in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides an internal door opening control device and method for a building intercom door machine, receives a door opening signal through a built-in MCU to control unlocking, and sets a standby power supply module to continuously power the MCU module, the internal door opening circuit and the unlocking circuit, thereby ensuring that the internal door opening function is available almost at any time, thereby improving the stability and safety of the door machine.

[0026] The technical solution in the embodiment of the present application has the following general idea:

[0027] Built-in MCU module, the inner door opening circuit and the unlocking circuit are connected to the MCU module for control. Due to the high stability of the MCU small system, the restart time is very short even if a fault occurs. At the same time, the MCU module, the inner door opening circuit and the unlocking circuit are continuously powered by the standby power module to ensure that the inner door opening function can still be used normally during power failure, thus solving the problem of invalid inner door opening when the system crashes, restarts, or remotely upgrades, and the problem of being unable to unlock when the power supply of the lock is normal but the power supply of the door machine is abnormal.

[0028] Embodiment 1

[0029] In this embodiment, a door opening control device in a building intercom door machine is provided. Figure 1 As shown, including:

[0030] MCU module, used for obtaining the inner door opening signal (triggered by the inner door opening button and generated by the inner door opening circuit) and sending the unlocking signal (unlocking is performed by the unlocking circuit, which may include a relay, and unlocking is controlled by the relay);

[0031] The CPU is connected to the MCU module, and exchanges control signals (such as a bidirectional reset signal) and door opening data with the MCU module (the CPU sends a remote door opening signal to the MCU module, and the MCU module returns unlocking information to the CPU);

[0032] CPU power module, connected to the main power supply and providing power to the CPU;

[0033] The standby power module includes at least a charge and discharge management module and a battery, which is used to connect to the main power supply and continuously supply power to the MCU module, the internal door opening circuit and the unlocking circuit. When the main power supply voltage is normal, the main power supply is used to supply power and charge the battery. When the main power supply voltage is abnormal, the battery is used to supply power. The MCU module adopts a standby power supply mode. Only when the main power supply and the battery are removed, the MCU can stop working.

[0034] When the inner door opening button is pressed, the inner door opening circuit generates an inner door opening signal. After receiving it, the MCU module performs the unlocking operation and then transmits the unlocking information back to the CPU. When the CPU passes the verification, it will also generate a remote door opening signal and send it to the MCU module, which can also perform the unlocking operation. After receiving it, the MCU module performs the unlocking operation and then transmits the unlocking information back to the CPU. Since the MCU small system has high stability, the restart time is very short even if a fault occurs. At the same time, the standby power module continuously supplies power to the MCU module, the inner door opening circuit and the unlocking circuit. When the main power supply of the door machine is abnormal and the lock power supply is normal, the battery starts to power the MCU to ensure the normal function of the inner door opening. Only when the main power supply and battery are removed can the MCU stop working.

[0035] In a preferred implementation, the CPU power module is also connected to the MCU module to receive the power control signal of the MCU module. When the MCU module finds that the CPU has abnormally timed out and the reset is invalid, it controls the CPU power module to restart.

[0036] In a preferred implementation, an RTC module is also included, which is connected to the MCU module and communicates with the MCU module via I2C. When the main power supply voltage is abnormal, the unlocking information is recorded by the RTC module, and then when the main power supply voltage is normal, the unlocking information is transmitted back to the CPU to ensure that the accurate unlocking time is recorded. The MCU module will transmit the unlocking information back to the CPU via I2C. When there is a need to open the door remotely, the CPU also informs the MCU module via I2C. The use of I2C can take into account both versatility and transmission efficiency.

[0037] In a preferred implementation, the standby power module includes a first buck module, a charge and discharge management module, a battery, and a second buck module. The first buck module is used to convert the total power input into a safe voltage of the charge and discharge management module. The charge and discharge management module is respectively connected to the output end of the first buck module, the battery, and the input end of the second buck module. When the first buck module has a voltage output, the charge and discharge management module converts the output of the first buck module into the input of the second buck module and the battery; when the first buck module has no voltage output, the charge and discharge management module converts the battery into the input of the second buck module. The second buck module is used to convert the output voltage of the first buck module or the battery into the specified working voltage of the MCU module.

[0038] Embodiment 2

[0039] This embodiment provides a door opening control method in a building intercom door machine. Figure 2 As shown, including;

[0040] When the MCU module obtains the inner door opening signal generated by the inner door opening circuit, it sends out an unlocking signal; when the MCU module obtains the outer door opening signal from the CPU, it sends out an unlocking signal; the inner door opening signal is generally generated by the person inside the door pressing the inner door opening button when he needs to go out; the outer door opening signal is generally generated by the person outside the door (which can be the owner, visitor or other outsider) when he needs to open the door, and it is a door opening signal generated by other means after CPU authentication and authorization.

[0041] When the main power voltage is normal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the main power supply. When the main power voltage is abnormal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the battery to ensure constant standby power supply.

[0042] Preferably, the method further comprises: when the MCU module finds that the CPU has timed out abnormally and reset is invalid, controlling the CPU power module to restart.

[0043] The MCU module can send a reset signal to the CPU to enable the CPU to perform a reset; the CPU can send a reset signal to the MCU module to enable the MCU module to perform a reset.

[0044] Preferably, the method further comprises: when the main power supply voltage is abnormal, recording the unlocking information through the RTC module, and then transmitting the unlocking information back to the CPU when the main power supply voltage is normal, so as to ensure that the accurate unlocking time is recorded.

[0045] The present invention connects the inner door opening circuit and the unlocking circuit to the MCU module for control through the built-in MCU module. At the same time, the MCU module, the inner door opening circuit and the unlocking circuit are continuously powered by the standby power module. Therefore, when the main control CPU system of the door machine is restarted, crashes, or remotely upgraded, the relevant functions are controlled by the MCU, and there is no need to worry about the failure of the inner door opening function; when the power supply of the door machine is abnormal, there is no need to worry about the failure of the inner door opening function.

[0046] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A door opening control device in a building intercom door machine, characterized in that: include: The MCU module is used to obtain the inner door opening signal generated by the inner door opening circuit and send an unlocking signal to the unlocking circuit; A CPU is connected to the MCU module and exchanges control signals and door opening data with the MCU module; CPU power module, connected to the main power supply and providing power to the CPU; The standby power module includes a charge and discharge management module and a battery, which is used to connect to the main power supply and continuously supply power to the MCU module, the internal door opening circuit and the unlocking circuit. When the main power supply voltage is normal, the main power supply is used to supply power and charge the battery. When the main power supply voltage is abnormal, the battery is used to supply power.

2. The device according to claim 1, characterized in that: The CPU power module is also connected to the MCU module to receive a power control signal from the MCU module.

3. The device according to claim 1, characterized in that: It also includes an RTC module connected to the MCU module.

4. The device according to claim 1, characterized in that: The CPU and MCU use I2C to exchange signal data.

5. A door opening control method in a building intercom door machine, characterized in that: A device as claimed in any one of claims 1 to 4 is provided, wherein the method comprises: When the MCU module obtains the inner door opening signal generated by the inner door opening circuit, it sends out an unlocking signal; when the MCU module obtains the outer door opening signal from the CPU, it sends out an unlocking signal; When the main power voltage is normal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the main power supply. When the main power voltage is abnormal, the MCU module, the internal door opening circuit and the unlocking circuit are powered by the battery to ensure constant standby power supply.

6. The method according to claim 5, characterized in that: When the MCU module finds that the CPU has timed out abnormally and the reset is invalid, it controls the CPU power module to restart.

7. The method according to claim 5, characterized in that: The MCU module can send a reset signal to the CPU to enable the CPU to perform a reset; the CPU can send a reset signal to the MCU module to enable the MCU module to perform a reset.

8. The method according to claim 5, characterized in that: When the main power supply voltage is abnormal, the unlocking information is recorded through the RTC module, and then when the main power supply voltage is normal, the unlocking information is returned to the CPU.

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