CN216387821U - Remote control module for power supply of network monitoring camera - Google Patents
Remote control module for power supply of network monitoring camera Download PDFInfo
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- CN216387821U CN216387821U CN202123271067.3U CN202123271067U CN216387821U CN 216387821 U CN216387821 U CN 216387821U CN 202123271067 U CN202123271067 U CN 202123271067U CN 216387821 U CN216387821 U CN 216387821U
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Abstract
The utility model discloses a remote control module for a power supply of a network monitoring camera, which is connected in series on a power supply line of the camera, wherein an external power supply of the camera is connected to the input end of the module, the output end of the module is connected with a power supply input interface of the camera, a switch module and a network interface are arranged in the module, a rear-end monitoring platform accesses the module through a network IP (Internet protocol), a power switch instruction is sent, and power supply voltage output by a camera power adapter is converted into controlled power supply voltage to supply power to the monitoring camera after passing through the module, so that the remote control of the power supply of a front-end monitoring camera is realized. The utility model solves the defect that the traditional maintenance mode needs manual work to the installation site for power-off operation, does not need independent wiring, has low cost and convenient and flexible use and operation, and solves the problem of high cost of matching installation of the power management cabinet.
Description
Technical Field
The utility model relates to a remote control module for a network monitoring camera power supply, which is used in the technical field of security monitoring.
Background
Because the security monitoring camera is mainly installed and operated in outdoor occasions with severe environments, such as remote fields, mountain forests, border lines, highways, urban highways and the like, the installation site is mostly installed at high altitude in modes of iron towers, high poles, building edge supports and the like, and maintenance personnel are often difficult to reach. The camera works in a severe environment for a long time, in order to ensure the running precision of the camera, the night vision device is inevitably required to be powered off and restarted, and the traditional maintenance mode requires manual power off and restart operation at the installation site of the camera, so that certain danger is caused; aiming at the problem, a general solution is to install a power management cabinet in cooperation with a camera, so that the problem of manual field power failure can be solved to a certain extent, and the use cost of the monitoring camera is greatly increased.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a remote control module for a power supply of a network monitoring camera, which solves the defect that the traditional maintenance mode needs manual work to the installation site for power-off operation, does not need separate wiring, has low cost and convenient and flexible use and operation, and solves the problem of high cost of matching installation of a power management cabinet.
In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: the utility model provides a remote control module for network surveillance camera machine power, this module concatenates on the camera power supply line, camera external power supply is connected to the input of this module, camera power input interface is connected to the output of this module, this module embeds switch module and network interface, this module of rear end monitoring platform through network IP visit, send the switch instruction, the supply voltage of camera power adapter output truns into controlled supply voltage behind this module and gives the surveillance camera machine power supply, thereby realize the remote control to the front end surveillance camera machine power.
Furthermore, the module comprises a power input interface, a power output interface, a network input interface, a network output interface, a DC-DC voltage conversion module, a power switching module, a network port chip, a switch module and a main control module,
the power input interface is connected with the output end of the camera power adapter, one path of the input power is connected to the DC-DC voltage conversion module, and the other path of the input power is connected to the power switching module;
the DC-DC voltage conversion module converts the input voltage to generate the power supply voltage of the power supply switching module, the main control module, the network port chip and the switch module;
the power supply switching module adopts a double-pole double-throw normally closed relay as a switch to simultaneously control the positive electrode and the negative electrode of the power supply input, the output end of the power supply switching module is connected with the power supply output interface, the power supply switching module is simultaneously connected with the main control module to receive a control signal of the main control module, and the control signal controls the on-off between the power supply input interface and the power supply output interface;
the input end and the output end of the switch module are respectively connected with the network input interface and the network output interface, the switch module is connected with the main control module through the network port chip, and the remote network connection of the switch module is realized through the network port chip and the switch module.
Further, the power switching module comprises an optocoupler OPT1, a triode Q1, a diode D2 and a double-pole double-throw normally-closed relay K1, a pin PA0 of the main control module is connected to an input pin 1 of an optocoupler OPT1 through a resistor R7, an input pin 2 of the optocoupler OPT1 is grounded through a resistor R8, an output pin 3 of an optocoupler OPT1 is connected with +3.3V, an output pin 4 of the optocoupler OPT1 is connected to a base electrode of the triode Q1 through a resistor R9, one path of a +12V power supply is connected to a collector electrode of a triode through a diode D2 in reverse series connection, the other path of the +12V power supply is connected to a collector electrode of the triode through a coil of a double-pole double-throw normally-closed relay K1, a normally-closed point of the double-pole double-throw normally-closed relay K1 is connected between an external input power supply and an output controlled power supply, and the module output controlled power supply is connected with a power output interface of the module.
Further, the DC-DC voltage conversion module adopts a TPS54560 power supply chip to convert the input voltage into +3.3V and +12V power supplies, wherein the +12V power supply is used for supplying power when the relay works; and the +3.3V is used for supplying power to the main control module, the switch module and the network port chip in the module.
Furthermore, one end of the network port chip is in data communication with the main control chip through an SPI interface, the other end of the network port chip is connected with the switch module through a network transformer, the switch module is provided with 3 network interfaces, the network port chip in the module and the module are respectively in output connection with the network port chip and the whole external network port, and the external network port is respectively a network input interface for connecting the monitoring camera and a whole external network output interface.
Further, the signal of the network port chip is ENC28J60, and the switch module adopts an ethernet chip IP 175G.
Furthermore, the main control module reserves an RS485 serial port through the serial port chip.
Furthermore, the main control module adopts an STM32 series single chip microcomputer.
The utility model has the beneficial effects that: the utility model provides a remote control module for a network monitoring camera power supply, which is characterized in that the module is connected in series on a camera power supply line, the input end of the module is connected with an external power supply of a camera, and the output end of the module is connected with a camera power supply input interface, so that the on-off control of the camera power supply is realized. The remote control module supports a network interface, and the rear-end monitoring platform sends a power switch instruction through the network IP access module, so that the remote control of the power supply of the front-end monitoring camera can be realized. The defect that the traditional maintenance mode needs manual power-off operation on an installation site is overcome; meanwhile, a network switch module is integrated in a module internal circuit, the network output of the camera is directly mounted on the switch module to realize single-network-cable output, independent wiring is not needed, the cost is low, the use and the operation are convenient and flexible, and the problem that the cost for installing the power management cabinet in a matched mode is high is solved.
Drawings
FIG. 1 is a schematic diagram of the present invention applied to a security video surveillance system;
FIG. 2 is a functional block diagram of the present module;
FIG. 3 is a circuit schematic of a DC-DC voltage conversion module;
FIG. 4 is a schematic circuit diagram of a power switching module;
FIG. 5 is a schematic circuit diagram of a portal chip;
FIG. 6 is a circuit schematic of a network transformer;
FIG. 7 is a circuit schematic of a switch module;
fig. 8 is a schematic circuit diagram of the main control module.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Example 1
The embodiment discloses a remote control module for a network monitoring camera power supply, as shown in fig. 1, the remote control module for the power supply is connected in series in a power supply circuit of a security monitoring camera, and power supply voltage output by a camera power adapter is converted into controlled power supply voltage through the remote control module for supplying power to the monitoring camera; the module only carries out on-off operation on the input voltage, does not change the power supply voltage and does not influence the normal work of the camera. In addition, the power supply remote control module supports a network interface, and is integrated with a network switch module, so that the network output of the camera can be connected to the network port of the module, the original single-network line output is realized, independent wiring is not needed, and the line laying cost is not increased. In conclusion, the power supply remote control module is accessed, the original external power supply and the original network interface link of the camera are not changed, and the normal work and the operation of the camera are not influenced.
In this embodiment, a schematic block diagram of the power supply remote control module is shown in fig. 2, the power supply remote control module externally includes four ports, namely, a power supply input/output interface and a network input/output interface, and additionally, an RS485 interface is reserved for a monitoring camera with an RS485 output interface to use.
The power input interface is connected to the output end of the camera power adapter, namely the original power supply port of the camera, and an input power supply is connected to the power supply end of the camera through the power output port after passing through the internal power supply switching module of the module; the network input interface is connected to the external network of the camera and is output to the network output interface through the internal switch module of the module; to the camera that has the RS485 interface, can reserve the RS485 interface with RS485 connection to this module to realize the remote control to the power through camera end operation, it is more convenient to use.
According to the principle block diagram, the power supply remote control module only switches on and off the power supply of the camera at the power supply output end, and the power supply in the module is not controlled by switching, so that the module supplies power for all time, the full-time online of a module network is ensured, and the remote power-on and power-off operation of the camera power supply at any time by the rear-end platform end is realized.
The design and the working description of each submodule inside the power supply remote control module are as follows:
1) DC-DC voltage conversion module
A power supply at the input end of the module power supply generates +3.3V and +12V power supplies after internal DC-DC voltage conversion, wherein the +12V power supply is used for supplying power when the relay works; the +3.3V is used for supplying power to the interior of the module, such as a main control module, a switch module, a serial port chip and a network port chip, and adopts +3.3V low-voltage power supply, so that the power consumption is low, and the requirement on power input of the camera is low. The DC-DC voltage conversion module is designed by adopting a mature integrated circuit scheme, such as a TPS54560 power chip, supports 4.5-60V wide-range power input, and is applicable to the power supply voltage of most of the existing security monitoring cameras. The schematic diagram is shown in fig. 3, fig. 3 only shows that the principle of converting the voltage into +3.3V and converting the voltage into +12V by using the TPS54560 power supply chip is the same as that of converting the voltage into +3.3V, and is not shown by a circuit diagram exclusively.
2) Power supply switching module
The power supply switching module of the power supply remote control module adopts a double-pole double-throw normally closed relay as a switch to simultaneously control the input positive pole and the input negative pole of a power supply; the normally closed relay defaults that the input/output end is in a conducting state, and the input/output end is in an open circuit when the normally closed relay is electrified and closed; the normally closed relay is selected to ensure the stability of the normal work of the camera, the relay does not need to be electrified during the normal work of the camera, the relay is electrified to work only when the power supply of the camera needs to be disconnected, and the power consumption of the module can be reduced. A schematic diagram of the power switching module is shown in fig. 4.
In the circuit, P1 is an external input power supply, P2 is a module output controlled power supply, and the module output controlled power supply is connected to a camera power supply port; the PA0 is a control pin of the MCU of the main control chip, the default state is low level, and the MCU sets the pin to high level when the power supply disconnection operation is needed; the OPT1 is a photoelectric coupler and is used for carrying out isolation conversion on high and low level signals of the MCU control pin PA0 so as to control the on and off of the triode Q1; the Q1 is an NPN type triode which is used as a switch tube to receive the output signal of the optical coupler OPT1 to control the conduction state of the triode so as to control the on-off of the relay K1; the K1 is a double-pole double-throw normally closed relay, and the on-off of the relay is controlled by the conducting state of a triode Q1, so that the on-off switching of a power supply of the camera is realized. The specific working process is as follows:
in a default state, a pin of a main control chip PA0 is at a low level, the output is at the low level after optical coupling isolation conversion, a triode Q1 is not conducted, a relay is not electrified to work, namely, the input and output are in a normally closed conducting state, and a camera is normally powered to work; when the power supply of the camera needs to be disconnected, the main control chip MCU receives an external control command to set the pin of the PA0 to be at a high level, the high level is output through the optocoupler OPT1, and the triode Q1 is controlled to be switched on, so that the relay K1 is controlled to be powered on, the input/output end is disconnected, and the power-off operation of the camera is realized.
3) Network port chip
The power supply remote control module is internally provided with a network interface, and realizes the network remote control of the back-end platform software and the module through the SPI communication between the network interface chip and the MCU. The schematic diagram of this part of the circuit is shown in fig. 5.
Adopt network interface chip ENC28J60 and main control chip MCU to carry out data communication through the SPI interface, transmit the control data that the rear end platform sent through the network to main control chip MCU, net gape chip output is RJ45 network interface through the output of network transformer, is connected to the network interface 0 of switch module, through exporting the internet access behind the switch module. Wherein a schematic diagram of a portion of the network transformer is shown in figure 6.
4) Switch module
The switch module is integrated in the power supply remote control module, the module is designed by adopting an IG175G Ethernet chip, the chip can support a maximum 5-port 10/100M self-adaptive network port and meet the network interface requirement of the module, and a partial circuit schematic diagram is shown in FIG. 7.
As shown in fig. 7, U4 is an IP175G network port chip, which can support 5 network ports at most, and the design designs 3 network ports, such as network ports 0-2, according to the requirement, which respectively pass through the network transformer circuit and then are respectively output and connected to the network interface in the module and the two network ports externally of the module, and the two network ports externally are respectively output by the network port connected to the monitoring camera and the network port externally of the module.
The remote network connection of the power supply remote control module is realized through the design of the network interface module and the switch module, the rear-end platform can communicate with the module in a network mode to control the module to carry out on-off control on the power supply of the monitoring camera, and the remote network operation is realized; meanwhile, the monitoring camera network is connected to the module and is mounted on the module built-in switch and then is output through the module internet access, so that the network access of the camera is not influenced, and the normal browsing and control operation of the network video of the camera is realized.
5) RS485 interface
The power supply remote control module of the utility model reserves an RS485 interface, and can receive the control command of the external RS485 interface to control the power supply switching module, thereby controlling the power supply of the camera to be switched on and off. The serial port mode controls the on-off of the power supply to support the delayed automatic power-on mode after power failure, when the power supply of the camera is controlled through an RS485 command, the master control module automatically starts timing after the power supply is disconnected from the module, and the power supply is automatically powered on according to set time. The set time can be set by a user.
The camera with the external RS485 interface can be directly connected to the interface, and when the camera is accessed through a network for control, the module can be directly operated and controlled at the webpage end of the camera to perform camera power-off operation. And after receiving a power-off command on the RS485, the module main control module controls the relay to work, cuts off the power supply output, automatically controls the relay to switch on the power supply output after setting time, and realizes the automatic power-on restarting of the camera. The mode is very convenient for the application of short-time power-off or restarting of camera maintenance, repair and the like.
6) Main control module
The power supply remote control module main control chip MCU is designed by adopting STM32 series single-chip microcomputer of ST company, has rich interface resources, mature technical scheme, simple peripheral circuit and stable working performance, and can meet the requirement of uninterrupted operation of the module in all time. The main functions realized by the main control module are as follows: the state change of an external pin PA0 is controlled according to a command sent by a network or a serial port so as to realize the control of the on-off of the relay; receiving and analyzing a control command sent by a network end through a network interface chip through an SPI (serial peripheral interface) interface, and executing corresponding actions; receiving a control command sent by an external RS485 interface through a serial port and executing corresponding actions; performing timing operation and the like; the main schematic diagram of this section is shown in fig. 8.
When the power supply remote control module is used, the power supply remote control module is connected in series in a power supply and network circuit of a security monitoring camera, can be used as an independent module and connected in series in an external power supply and network circuit of a small-sized camera, can also be internally arranged in a security ball machine with a holder or a photoelectric turntable and connected in series in an internal circuit as a sub-module, does not need additional wiring, is flexible and convenient in use mode, simple in operation, low in cost, low in overall power consumption and stable in performance, can solve the defect that a traditional maintenance mode needs manual field operation, also avoids the problem of high cost of installing a power supply management cabinet, and saves a large amount of manpower and material resource cost while realizing convenient remote control of the power supply.
The foregoing description is only for the basic principle and the preferred embodiments of the present invention, and modifications and substitutions by those skilled in the art are included in the scope of the present invention.
Claims (8)
1. A remote control module for a network surveillance camera power supply, comprising: the module is connected in series on a power supply line of the camera, an external power supply of the camera is connected to the input end of the module, the output end of the module is connected with a power input interface of the camera, the module is internally provided with a switch module and a network interface, a rear-end monitoring platform accesses the module through a network IP (Internet protocol), and sends a power switch instruction, and the power supply voltage output by the power adapter of the camera is converted into controlled power supply voltage to supply power to the monitoring camera through the module, so that the remote control of the power supply of the front-end monitoring camera is realized.
2. The remote control module for a network monitoring camera power supply of claim 1, characterized by: the module comprises a power input interface, a power output interface, a network input interface, a network output interface, a DC-DC voltage conversion module, a power switching module, a network port chip, a switch module and a main control module,
the power input interface is connected with the output end of the camera power adapter, one path of the input power is connected to the DC-DC voltage conversion module, and the other path of the input power is connected to the power switching module;
the DC-DC voltage conversion module converts the input voltage to generate the power supply voltage of the power supply switching module, the main control module, the network port chip and the switch module;
the power supply switching module adopts a double-pole double-throw normally closed relay as a switch to simultaneously control the positive electrode and the negative electrode of the power supply input, the output end of the power supply switching module is connected with the power supply output interface, the power supply switching module is simultaneously connected with the main control module to receive a control signal of the main control module, and the control signal controls the on-off between the power supply input interface and the power supply output interface;
the input end and the output end of the switch module are respectively connected with the network input interface and the network output interface, the switch module is connected with the main control module through the network port chip, and the remote network connection of the switch module is realized through the network port chip and the switch module.
3. The remote control module for a network monitoring camera power supply of claim 2, characterized by: the power supply switching module comprises an optical coupler OPT1, a triode Q1, a diode D2 and a double-pole double-throw normally-closed relay K1, a pin PA0 of the main control module is connected to an input pin 1 of an optical coupler OPT1 through a resistor R7, an input pin 2 of the optical coupler OPT1 is grounded through a resistor R8, an output pin 3 of an optical coupler OPT1 is connected with +3.3V, an output pin 4 of the optical coupler OPT1 is connected to a base electrode of the triode Q1 through a resistor R9, one path of a +12V power supply is connected to a collector electrode of a triode through a diode D2 which is connected in series in a reverse direction, the other path of the +12V power supply is connected to a collector electrode of the triode through a coil of a double-pole double-throw normally-closed relay K1, a normally-closed point of the double-pole double-throw normally-closed relay K1 is connected between an external input power supply and an output controlled power supply, and a module output controlled power supply is connected with a power output interface of the module.
4. The remote control module for a network monitoring camera power supply of claim 2, characterized by: the DC-DC voltage conversion module adopts a TPS54560 power supply chip to convert input voltage into +3.3V and +12V power supplies, wherein the +12V power supply is used for supplying power when the relay works; and the +3.3V is used for supplying power to the main control module, the switch module and the network port chip in the module.
5. The remote control module for a network monitoring camera power supply of claim 2, characterized by: one end of the network port chip is in data communication with the main control chip through an SPI interface, the other end of the network port chip is connected with the switch module through a network transformer, the switch module is provided with 3 network interfaces, the network port chip in the module and the module are respectively connected in an output mode, and the two network ports are respectively a network input interface for connecting a monitoring camera and an integral external network output interface.
6. The remote control module for a network monitoring camera power supply of claim 5, characterized by: the network port chip signal is ENC28J60, and the switch module adopts an Ethernet chip IP 175G.
7. The remote control module for a network monitoring camera power supply of claim 2, characterized by: the main control module reserves an RS485 serial port through the serial port chip.
8. The remote control module for a network monitoring camera power supply of claim 2, characterized by: the main control module adopts STM32 series single-chip microcomputer.
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| CN202123271067.3U CN216387821U (en) | 2021-12-24 | 2021-12-24 | Remote control module for power supply of network monitoring camera |
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| CN202123271067.3U CN216387821U (en) | 2021-12-24 | 2021-12-24 | Remote control module for power supply of network monitoring camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978788A (en) * | 2022-05-25 | 2022-08-30 | 西安电子科技大学 | Network switch based on dual-mode switching |
| CN115051179A (en) * | 2022-06-06 | 2022-09-13 | 云控智行科技有限公司 | Multifunctional adapter box and roadside sensing equipment box |
-
2021
- 2021-12-24 CN CN202123271067.3U patent/CN216387821U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114978788A (en) * | 2022-05-25 | 2022-08-30 | 西安电子科技大学 | Network switch based on dual-mode switching |
| CN114978788B (en) * | 2022-05-25 | 2023-04-18 | 西安电子科技大学 | Network switch based on dual-mode switching |
| CN115051179A (en) * | 2022-06-06 | 2022-09-13 | 云控智行科技有限公司 | Multifunctional adapter box and roadside sensing equipment box |
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