TWI716812B - A remote watching and control system, extension control device and controlling method thereof - Google Patents

Abstract

A remote watching and control system includes an image monitoring device, an actuating device and an extension control device. The image monitoring device includes a processor, a digital output pin and a communication unit. The processor receives a control command by the communication unit, and the digital output pin output a pulse signal according to the control command. The extension control device receives the pulse signal and analyzes the duty cycle or frequency of the pulse signal. The extension control device generates a control signal according to the difference of the pulse signal. The actuating device received the control signal and actuated according to the control signal.

Description

Remote monitoring and control system, extended control equipment and control method thereof

A remote monitoring and control system, in particular, refers to a remote monitoring and control system suitable for existing image monitoring equipment and providing control functions.

In order to meet the needs of various environments and users, the remote monitoring system must be equipped with various hardware devices, such as cameras, door locks, electric doors, and so on. However, the different brands, specifications, and pins of various hardware devices often cause restrictions on use.

Existing commercially available video surveillance equipment is limited by the existing hardware architecture. If new control functions are to be added, new components must be added to the original hardware architecture. As a result, the cost of hardware manufacturing increases, and the manufacturing time will be extended.

In view of this, it is possible to make the image surveillance equipment further have control functions without changing the image surveillance equipment under the existing hardware architecture.

In some embodiments, the present invention provides a remote monitoring and control system. The remote monitoring and control system includes image monitoring equipment, extended control equipment and actuation equipment. The image monitoring equipment includes a processor, digital output pins and a communication unit. The processor receives the control command through the communication unit and outputs a pulse signal on the digital output pin according to the control command. The extended control device receives the pulse signal and analyzes the duty cycle or frequency of the pulse signal to generate different control signals according to different duty cycles or frequencies. The actuating device receives the control signal and acts according to the control signal.

The present invention also provides a remote monitoring and control method, which includes receiving a control command, then outputting a pulse signal on a digital output pin according to the control command, then analyzing the duty cycle or frequency of the pulse signal, and finally according to different duty cycles Ratio or frequency generates control signal.

The present invention also provides an extended control device. The extension control device includes a receiving unit, a computing unit and a sending unit. The receiving unit receives the pulse signal. The calculation unit analyzes the duty cycle or frequency of the pulse signal to generate different control signals according to different duty cycles or frequencies. The sending unit sends a control signal.

The remote monitoring and control system and extended control equipment provided by the embodiments of the present invention can use one of the digital pins of the commercially available image monitoring equipment to issue control commands to other actuating equipment without adding any new parts. Can save costs. The remote monitoring and control method provided by the embodiment of the present invention can provide a more convenient operation mode and more diverse application modes.

Fig. 1 is a schematic diagram of a remote monitoring and control system according to an embodiment of the present invention. Referring to FIG. 1, the remote monitoring and control system includes an image monitoring device 10, an extended control device 20 and an actuation device 30. Here, the image monitoring device 10 refers to a device having an image processing function and a communication unit 130. In some embodiments, the image monitoring device 10 may be a device such as a DVR (Digital video recorder), NVR (Network Video Recorders), IPCAM (IP Camera), WebCAM, Vedio Server, etc., and is not limited thereto.

Continue to refer to Figure 1. In the remote monitoring and control system of the embodiment of the present invention, the image monitoring device 10 uses the original digital output pin 140 (DO) to send pulse signals to the extended control device 20 under the limitations of the existing hardware architecture. It then reaches the control actuation device 30. For example, the image monitoring device 10 receives a control command from a client (such as a mobile phone 60) through the communication unit 130, and then outputs a pulse signal to the extension control device 20 through a digital output pin 140 of the image monitoring device 10, and extends control After the device 20 analyzes the duty cycle or frequency of the pulse signal, it outputs a corresponding control signal to the actuating device 30 (such as an iron rolling door) according to the obtained analysis result, and the actuating device 30 generates corresponding actions according to the control signal. That is to say, when the client discovers that the iron rolling door in the home has forgotten to be closed through the original image processing function of the image monitoring device 10, it can directly control the closing of the iron rolling door through the image monitoring device 10.

Fig. 2 is a block diagram of a remote monitoring and control system according to an embodiment of the present invention. The communication unit 130 and the digital output pin 140 are both connected to the processor 120. The processor 120 receives a control command through the communication unit 130 and outputs a pulse signal on the digital output pin 140 according to the control command. In some embodiments, the image monitoring device 10 transmits the pulse signal to the extension control device 20 by means of differential signal transmission. For example, the digital output pins 140 can be USB pins, IEEE1394 pins, RS485 pins, RS422 pins, and so on. In some embodiments, the digital output pin 140 may adopt a wired connection.

In some embodiments, the digital output pin 140 is a unit that the image monitoring device 10 is originally configured with when it leaves the factory. In other words, under the condition that the hardware of the image monitoring device 10 remains unchanged, the remote monitoring and control function can be achieved by only modifying a small part of the program of the software.

Figure 3 is a schematic diagram of a fixed frequency pulse wave. The receiving unit 220 of the extension control device 20 receives the pulse wave signal, and the pulse wave signal is sent to the calculation unit 210 to analyze the duty ratio or frequency of the pulse wave signal, so it can be based on different duty ratios (Duty Ratio/Duty Cycle) or frequency Generate different control signals. Referring to Figure 3, time A is the duration of a pulse signal's high potential. The time B is the total time of the entire signal cycle, that is, the total duration of a pulse signal with a high potential and a low potential, and the duty cycle refers to the ratio of A:B.

That is to say, the pulse width of a pulse signal with a fixed frequency is controlled, for example: a pulse signal with a first duty cycle (such as 15%) is used to control the extension control device 20 to perform a first action to have a second The pulse signal of the duty cycle (eg, 65%) controls the extension control device 20 to perform the second action. Or, use pulse signals of different frequencies to control the pulse frequency, for example: use a pulse signal with a first frequency (such as 1kHz) to control the extension control device 20 to perform a first action to have a second frequency (such as 2kHz) pulse signal to control the extension control device 20 to perform the second action. The actuating device 30 receives the control signal and performs corresponding actions according to different control signals.

In some embodiments, the calculation unit 210 of the extension control device 20 performs frequency-voltage conversion or filtering processing on the pulse signal, generates a control signal according to the signal processing result, and sends the control signal through the sending unit 230. Here, the frequency-to-voltage conversion can be implemented by converting F/V (frequency/voltage) to each other, low-pass filtering processing, or full wave processing. That is, through filtering processing (such as band pass filter, pulse width measurement, frequency measurement), the specific frequency is reserved and combined with F/V (frequency/voltage) conversion or low-pass filtering to output control signals.

In some embodiments, the actuating element 310 in the actuating device 30 receives the control signal to act. For example, the actuating element 310 may be a switch, a relay (Relay), a transistor (Transistor) or a metal oxide half field effect transistor (MOSFET). In some embodiments, the actuating element 310 further includes a motor (Motor). More specifically, the actuating device 30 may be an actuating device equipped with a motor such as an iron rolling door, an iron gate, an electric window, etc., or it may be a pet feeder, various household appliances, etc., and is not limited to the above examples.

In some embodiments, the control signals are mutually exclusive control signals. For example, the actuating device 30 is a motor, which can rotate forward, reverse or stop according to the control signal. Since these three actions do not occur at the same time, the control signals are mutually exclusive to avoid damage to the motor. In some embodiments, the control signal is one of a forward rotation signal, a reverse rotation signal or a stop signal. For example, when the control command is a forward rotation command, the processor 120 of the image monitoring device 10 outputs a pulse signal with a first duty cycle at the digital output pin 140 according to the control command. When the extension control device 20 calculates When the unit 210 takes the pulse signal with the first duty ratio, it outputs a forward rotation control signal, and the actuating device 30 starts to start forward rotation according to the forward rotation control signal.

Fig. 4 is a flowchart of a remote monitoring and controlling party implemented by the present invention. Referring to FIG. 4, in some embodiments, the remote monitoring and control method includes receiving a control command (step S110), then outputting a pulse signal 140 on the digital output pin according to the control command (step S120), and then analyzing the pulse signal The duty cycle or frequency (step S130), and finally a control signal is generated according to the different duty cycle or frequency (step S140). Fig. 5 is a flowchart of a remote monitoring and controlling party according to another embodiment of the present invention. Referring to FIG. 5, in other embodiments, step S141 may be included between step S130 and step S140. Step S141 is to perform frequency-voltage conversion or/and filtering processing on the pulse signal to generate a control signal according to the signal processing result. For example, the frequency-to-voltage conversion is to convert the pulse frequency to a corresponding voltage value for subsequent determination of the pulse frequency based on the voltage value. More specifically, a counter can be used to count the number of pulse waves, and a DAC (digital analog converter) can output the corresponding voltage value according to the number. For example, the higher the number of pulse waves, the higher the output voltage value. For another example, the filtering process may be a low-pass filtering process, using a band-pass filter to filter out noise in the signal to facilitate subsequent S140.

Fig. 6 is a schematic diagram of a remote monitoring and control system according to another embodiment of the present invention. In some embodiments, the client uses the mobile phone 60 to send control commands to the security host 40, and the image monitoring device 10 is wired/or wirelessly connected to the security host 40 through the communication unit 130 to receive the above control commands, and then via the image monitoring device 10 A digital output pin 140 outputs the pulse signal to the extended control device 20. After the extended control device 20 analyzes the duty cycle or frequency of the pulse signal, it outputs the corresponding control signal to the actuating device 30 according to the obtained analysis result to actuate The device 30 then generates corresponding actions according to the control signal. For example, when a visitor visits and the owner of the home is still in a traffic jam on the road, the owner connects to the security host 40 via a mobile phone to watch the surveillance image. If the surveillance image finds that the visitor has arrived at the door, he can directly use the image surveillance device 10 Control the opening of the rolling door and let visitors in first.

Fig. 7 is a schematic diagram of a remote monitoring and control system according to another embodiment of the present invention. In some embodiments, the client uses the mobile phone 60 to send control commands to the server 50, the server 50 is connected to the security host 40, and the communication unit 130 of the image monitoring device 10 is connected to the security host 40 to receive the above control commands.

In some embodiments, the processor 120 and the computing unit 210 may be implemented by a central processing unit (CUP, Central Processing Unit), an integrated circuit (IC), a microprocessor (Microprocessor), a chip (Chip), etc. achieve.

Although the technical content of the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with this technique and makes some changes and modifications without departing from the spirit of the present invention should be covered by the present invention Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

10: Video surveillance equipment 120: processor 130: communication unit 140: digital output pin 20: Extended control equipment 210: calculation unit 220: receiving unit 230: sending unit 30: Actuating equipment 310: Actuating element 40: Security host 50: web server 60: mobile phone S110-S141: steps

[Figure 1] is a schematic diagram of a remote monitoring and control system according to an embodiment of the present invention. [Figure 2] is a block diagram of a remote monitoring and control system according to an embodiment of the present invention. [Figure 3] is a schematic diagram of a fixed frequency pulse wave. [Figure 4] is a flowchart of a remote monitoring and controlling party implemented in the present invention. [Figure 5] is a flowchart of a remote monitoring and controlling party according to another embodiment of the present invention. [Figure 6] is a schematic diagram of a remote monitoring and control system according to another embodiment of the present invention. [Figure 7] is a schematic diagram of a remote monitoring and control system according to another embodiment of the present invention.

10: Video surveillance equipment

20: Extended control equipment

30: Actuating equipment

60: mobile phone

Claims (7)

A remote monitoring and control system includes: an image monitoring device, including a processor, a digital output pin, and a communication unit. The processor receives a control command via the communication unit, and transmits the control command to the digital location according to the control command. The output pin outputs a pulse signal; an extended control device receives the pulse signal and analyzes a duty cycle or a frequency of the pulse signal to generate a different one according to the different duty cycle or frequency Control the signal, and perform frequency-voltage conversion or filter processing on the control signal; and an actuating device that receives the control signal and operates according to the control signal, wherein the control signal is a mutually exclusive control signal. The remote monitoring and control system according to claim 1, wherein the actuating device is a motor. The remote monitoring and control system according to claim 2, wherein the control signal is one of a forward signal, a reverse signal, or a stop signal. A remote monitoring and control method includes: receiving a control command; outputting a pulse signal on a digital output pin according to the control command; analyzing a duty cycle or a frequency of the pulse signal; The null ratio or the frequency generates a control signal, wherein the control signal is a mutually exclusive control signal; and the control signal is subjected to frequency-voltage conversion or filtering processing. The remote monitoring and control method according to claim 4, wherein the control signal is one of a forward signal, a reverse signal, or a stop signal. An extended control device includes: a receiving unit that receives a pulse wave signal; a calculation unit that analyzes a duty cycle or a frequency of the pulse wave signal to generate a different one according to different duty cycles or frequencies Control the signal, and perform frequency-voltage conversion or filtering processing on the control signal; and a sending unit to send the control signal, wherein the control signal is a mutually exclusive control signal. The extended control device according to claim 6, wherein the control signal is one of a forward rotation signal, a reverse rotation signal, or a stop signal.

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