A POE control box

Abstract

The utility model provides a kind of POE control box, it is arranged between Ethernet communication gateway and tubular motor, comprising: communication network port, it is connected with Ethernet communication gateway by network cable, for receiving the data and power issued by Ethernet communication gateway;POE module transformer is connected with Ethernet communication gateway, for carrying out voltage conversion to Ethernet communication gateway voltage;Type-C interface is connected with the output end of Ethernet communication gateway and POE module transformer respectively, for sending the data received by Ethernet communication gateway to tubular motor, or, according to the output voltage of POE module transformer, the battery of tubular motor is charged.The utility model can use POE function to complete communication and power supply dual connection with single network cable, synchronous realization data acceptance and power acquisition can be realized by single line, reduce wiring difficulty, and improve subsequent maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of POE technology, and in particular to a POE control box. Background Technology

[0002] In the control field of tubular motors in building shading systems such as electric curtains, roller blinds, and awnings, the control box is the core component that connects the tubular motor with external control commands and power supply lines. It must receive control signals such as start / stop and forward / reverse rotation from external devices through the lines, and provide the necessary power for the internal circuits of the control box and the tubular motor battery to ensure the accurate response and stable operation of the tubular motor.

[0003] Most mainstream tubular motor control boxes currently employ a separate communication and power supply solution. Their reserved RJ45 network interface only handles a single communication function, transmitting control signals and tubular motor operating status data. The charging needs of the tubular motor battery require a separate Type-C male connector cable connected to an external power adapter. However, in practical applications, since building shading systems are often installed in high places or confined spaces such as inside ceilings or at the top of roller blinds, a dual-line layout requires separate planning for the communication and power lines. This increases wiring difficulty and can lead to inefficient installation due to tangled wires. Furthermore, it reduces troubleshooting efficiency during subsequent maintenance, affecting the use of the tubular motor. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing tubular motor control boxes, which use two independent lines to meet the communication and tubular motor battery charging needs respectively, resulting in high wiring difficulty and low subsequent maintenance efficiency. This invention provides a PoE control box that uses PoE functionality to complete dual communication and power supply connections with a single network cable. Data reception and power acquisition can be achieved synchronously through a single line, which can effectively reduce wiring difficulty and improve subsequent maintenance efficiency, thereby achieving efficient control of the tubular motor.

[0005] The objective of this utility model is achieved through the following technical solution: A PoE control box, disposed between an Ethernet communication gateway and a tubular motor, includes: The communication port connects to the Ethernet communication gateway via a network cable and is used to receive data and power from the Ethernet communication gateway. The POE module transformer is connected to the Ethernet communication gateway and is used to convert the voltage of the Ethernet communication gateway. The Type-C interface is connected to the output terminals of the Ethernet communication gateway and the POE module transformer, respectively, to send the data received by the Ethernet communication gateway to the tubular motor, or to charge the battery of the tubular motor according to the output voltage of the POE module transformer.

[0006] By utilizing PoE (Power over Ethernet) functionality, both communication and power connections can be simultaneously established via a single network cable. This eliminates the need for separate planning of communication and power cable routes, effectively reducing wiring complexity. During subsequent maintenance, there's no need to distinguish between two lines for troubleshooting, allowing for rapid problem location and improved maintenance efficiency. Furthermore, single-line transmission effectively reduces electromagnetic interference from power supply to communication signals, enabling tubular motors to receive control commands more promptly and respond more accurately, achieving highly efficient control of the tubular motor.

[0007] Furthermore, the POE module transformer includes: The rectifier unit includes two bridge rectifiers, which are connected to the Ethernet communication gateway respectively, and are used to rectify the network port voltage of the Ethernet communication gateway into DC voltage.

[0008] Furthermore, a protection diode is also provided between the output terminals of the two bridge rectifiers.

[0009] Furthermore, the POE module transformer also includes: The step-down control unit is connected to the output terminals of the two bridge rectifiers respectively, and is used to step down the DC voltage output by the two bridge rectifiers to output the motor charging voltage.

[0010] Furthermore, an output filter unit is also provided on the output terminal of the buck control unit to filter the motor charging voltage output by the buck control unit.

[0011] Furthermore, the POE control box also includes: A network adapter, connected to an Ethernet communication gateway, is used to establish communication between the communication port and the Ethernet communication gateway.

[0012] Furthermore, a signal conditioning and isolation circuit is provided between the network adapter and the Ethernet communication gateway.

[0013] Furthermore, the POE control box also includes: The step-down module is connected to the output terminal of the POE module transformer and is used to step down the output voltage of the POE module transformer to output the working voltage of the POE control box.

[0014] Furthermore, the POE control box also includes: The control module is located between the Ethernet communication gateway and the Type-C interface. It is used to forward data received by the Ethernet communication gateway, or, in response to the pressed state of the control button on the PoE control box housing, to output control signals for the tubular motor according to preset control logic.

[0015] Furthermore, the POE control box also includes: Indicator lights, located on the outer casing of the POE control box, are connected to the control module and are used to indicate the operating status of the tubular motor based on the control signals output by the control module.

[0016] The beneficial effects of this utility model are: By utilizing PoE (Power over Ethernet) functionality, both communication and power connections can be simultaneously established via a single network cable. This eliminates the need for separate planning of communication and power cable routes, effectively reducing wiring complexity. During subsequent maintenance, there's no need to distinguish between two lines for troubleshooting, allowing for rapid problem location and improved maintenance efficiency. Furthermore, single-line transmission effectively reduces electromagnetic interference from power supply to communication signals, enabling tubular motors to receive control commands more promptly and respond more accurately, achieving highly efficient control of the tubular motor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a circuit diagram of a POE module transformer according to an embodiment of the present invention; Figure 3 This is a circuit diagram of a step-down module according to an embodiment of the present invention.

[0018] The components include: 1. Communication network port, 2. PoE module transformer, 3. Type-C interface, 4. Ethernet communication gateway, 5. Tubular motor, 6. Network adapter, 7. Step-down module, and 8. Control module. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example: A PoE control box is installed between the Ethernet communication gateway 4 and the tubular motor 5, such as Figure 1 As shown, it includes: Communication port 1 is connected to the Ethernet communication gateway via a network cable and is used to receive data and power from the Ethernet communication gateway. POE module transformer 2 is connected to the Ethernet communication gateway and is used to convert the voltage of the Ethernet communication gateway. Type-C interface 3 is connected to the output terminals of the Ethernet communication gateway and the POE module transformer, respectively, to send the data received by the Ethernet communication gateway to the tubular motor, or to charge the battery of the tubular motor according to the output voltage of the POE module transformer.

[0021] PoE technology can utilize idle wire pairs in an Ethernet cable or the same wire pair as the data cable to transmit power. Therefore, by setting up a communication port that supports PoE and conforms to the PoE (Power Over Ethernet) standard, and physically connecting it to an Ethernet communication gateway via a single Cat5e / Category 6 Ethernet cable, the goal of achieving dual access for data and power on a single line can be achieved.

[0022] The communication port can receive tubular motor control commands, such as start / stop and forward / reverse data, from the Ethernet gateway according to the TCP / IP protocol, and can also receive PoE standard high-voltage power output from the Ethernet gateway. This embodiment specifically uses an RJ45 LAN interface as the communication port.

[0023] Because the Ethernet communication gateway outputs PoE standard high-voltage power, while the tubular motor and battery have low-voltage rated voltages, there is a significant voltage difference between the two. Directly connecting the power supplied by the Ethernet communication gateway would burn out the tubular motor and affect operational safety. Therefore, a PoE module transformer is installed to convert the high-voltage output from the Ethernet communication gateway to the low-voltage power suitable for the tubular motor, ensuring power supply safety.

[0024] Considering that most tubular motors have a reserved Type-C interface for charging or local data interaction, and that the Type-C interface itself has dual data and power transmission functions, data forwarding and charging can be completed simultaneously through a single interface, the use of the Type-C interface to connect the control box and the tubular motor simplifies the control box structure and can directly adapt to the motor's original interface without modifying the motor structure, further reducing adaptation costs.

[0025] The POE module transformer includes: The rectifier unit includes two bridge rectifiers, which are connected to the Ethernet communication gateway respectively, and are used to rectify the network port voltage of the Ethernet communication gateway into DC voltage.

[0026] A protection diode is also provided between the output terminals of the two bridge rectifiers.

[0027] The POE module transformer also includes: The step-down control unit is connected to the output terminals of the two bridge rectifiers respectively, and is used to step down the DC voltage output by the two bridge rectifiers to output the motor charging voltage.

[0028] The output terminal of the step-down control unit is also equipped with an output filter unit, which is used to filter the motor charging voltage output by the step-down control unit.

[0029] The PoE power supply of Ethernet communication gateways specifically follows the IEEE standard, and there are two typical wire pair combinations for power supply. Therefore, a two-bridge rectifier is designed, utilizing the unidirectional conductivity of diodes, to respectively connect to the input voltage of different wire pairs of the Ethernet communication gateway. This eliminates the need to distinguish between the power supply wire pairs of the Ethernet communication gateway, allowing for compatibility with Ethernet communication gateways of different standards and ensuring the reliability of the input voltage. To suppress reverse voltage and provide surge protection, a protection diode is added between the output terminals of the two bridge rectifiers. When a reverse voltage occurs in the circuit, such as a momentary polarity fluctuation in power supply or a reverse potential introduced by external electromagnetic interference, the protection diode will quickly conduct, clamping the reverse voltage within a safe range. This prevents downstream circuit components from being damaged by reverse high voltage, ensuring the safe operation of the PoE control box and the connected tubular motor.

[0030] In addition, the rectifier unit still outputs high-voltage DC power according to the POE standard, while the rated charging voltage of the tubular motor battery is low-voltage DC power. The two voltages do not match. Therefore, a step-down control unit is further set up to convert the high-voltage DC power into low-voltage power suitable for the tubular motor through a switching regulation or linear voltage regulation mechanism.

[0031] To further ensure stable battery charging voltage for the tubular motor, an output filter unit is added to the output of the step-down control unit to filter the charging voltage, reduce the impact of voltage fluctuations on the battery electrodes, extend the battery life of the tubular motor, and improve the stability of the tubular motor during subsequent operation.

[0032] Specifically, the circuit diagram of the POE module transformer in this embodiment is as follows: Figure 2 As shown, it includes a rectifier unit consisting of bridge rectifiers U1 and U2, a protection diode D1, a step-down control unit consisting of a POE step-down chip U3, sampling resistors R1 and R2, and an output filter unit consisting of an electrolytic capacitor EC1, a resistor R3, and a capacitor C1.

[0033] The bridge rectifier U1 includes input ports UB1 and UB2, which connect to one pair of wires in the communication network port. The bridge rectifier U2 includes input ports UA1 and UA2, which connect to the other pair of wires in the communication network port.

[0034] A sampling resistor is connected in series between the POE step-down chip and the output terminals of bridge rectifiers U1 and U2, respectively, to feed back the corresponding voltage and current data to the POE step-down chip. The POE control chip can dynamically adjust its output based on the feedback voltage and current data according to a predetermined adjustment strategy, so that the output motor charging current remains constant.

[0035] To enable rapid establishment of communication between the PoE control box and the Ethernet communication gateway, the PoE control box also includes: Network adapter 6 connects to the Ethernet communication gateway and is used to establish communication between the communication port and the Ethernet communication gateway.

[0036] In this embodiment, the CH395F is specifically used as the network adapter. It has a built-in complete TCP / IP protocol stack and can independently complete operations such as connection establishment, data encapsulation, decapsulation, and verification. Data interaction can be achieved through simple logic instructions without the need for additional calculation and parsing programs. This optimizes the hardware of the PoE controller, enabling the PoE control box to quickly adapt to narrow tubular motor scenarios.

[0037] Furthermore, considering that PoE cables transmit both high-voltage electricity and data signals simultaneously, making them susceptible to damage from leakage or surges to the network adapter, and that tubular motors generate strong electromagnetic interference during operation, leading to communication signal distortion, a signal conditioning and isolation circuit is also provided between the network adapter and the Ethernet communication gateway.

[0038] In this embodiment, the signal conditioning and isolation circuit primarily employs a network transformer. This transformer transmits signals via electromagnetic coupling, achieving electrical isolation between the network port side and the network adapter side, thus preventing high-voltage damage to the chip. Furthermore, the common-mode choke of the network transformer can filter out high-frequency noise in the signal and suppress external electromagnetic interference, further optimizing communication performance.

[0039] Since the output voltage of the POE module transformer is designed for charging the tubular motor battery, while the internal components of the POE control box, such as the network adapter, operate at low voltage, directly using the output motor charging voltage will also cause overvoltage burnout.

[0040] Therefore, the POE control box also includes: The step-down module 7 is connected to the output terminal of the POE module transformer and is used to step down the output voltage of the POE module transformer to output the working voltage of the POE control box.

[0041] The step-down module in this embodiment mainly adopts a synchronous rectification type DC-DC step-down converter, and its circuit diagram is as follows: Figure 3 As shown, it includes a step-down chip U4, an input filter capacitor C2, an electrolytic capacitor EC2, a supplementary filter capacitor C3, an energy storage inductor L1, an output filter capacitor C4, a decoupling capacitor C5, a decoupling capacitor C6, a protection diode D2, a current-limiting resistor R4, a feedback voltage divider R5, and a feedback voltage divider resistor R6.

[0042] The step-down chip U3 has a built-in power MOSFET, which can control the output voltage through pulse width modulation (PWM). Specifically, the PWM duty cycle can be adjusted by the voltage signals fed back by feedback voltage divider resistors R5 and R6.

[0043] The step-down module draws power directly from the output of the POE module transformer, eliminating the need for additional power lines and further simplifying the wiring of the POE control box.

[0044] In tubular motor control scenarios, both remote centralized control via an Ethernet communication gateway and local operation are required to achieve safe and redundant control of the tubular motor. Therefore, the PoE control box in this embodiment is also equipped with corresponding control buttons on its outer casing for local operation of the motor by the user.

[0045] The Ethernet communication gateway transmits TCP / IP protocol data, while the control buttons are hardware level signals. The signal types and protocols of the two are completely different. If the corresponding control is achieved by connecting them to the motor separately, it will lead to redundancy of motor interfaces and more complex circuitry.

[0046] Therefore, the POE control box is also provided with: Control module 8 is located between the Ethernet communication gateway and the Type-C interface. It is used to forward data received by the Ethernet communication gateway, or, in response to the pressed state of the control button on the PoE control box housing, to output control signals for the tubular motor according to preset control logic.

[0047] The control module can be an existing control chip such as an MCU, which can convert the data transmitted by the Ethernet communication gateway and the hardware level signals emitted by the control buttons into standard control signals that the tubular motor can recognize. Furthermore, the control module has built-in preset control logic, such as resetting the motor when a control button is pressed, to filter out momentary interference from the control buttons and avoid accidental operation.

[0048] The control module can also be a logic circuit, which can be adapted to control tubular motors that support Ethernet protocols.

[0049] Considering that the PoE control box for tubular motors is usually installed in confined high spaces such as inside the ceiling or at the top of roller shutters, making it difficult to observe, the PoE control box in this embodiment also includes: Indicator lights, located on the outer casing of the POE control box, are connected to the control module and are used to indicate the operating status of the tubular motor based on the control signals output by the control module.

[0050] The operating status of the tubular motor can be reflected by the on / off state of the indicator lights. For example, when the power light is off, it can be determined that there is a fault in the PoE power supply link, which can effectively improve the troubleshooting efficiency of operation and maintenance.

[0051] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A PoE control box, disposed between an Ethernet communication gateway and a tubular motor, characterized in that, include: The communication port connects to the Ethernet communication gateway via a network cable and is used to receive data and power from the Ethernet communication gateway. The POE module transformer is connected to the Ethernet communication gateway and is used to convert the voltage of the Ethernet communication gateway. The Type-C interface is connected to the output terminals of the Ethernet communication gateway and the POE module transformer, respectively, to send the data received by the Ethernet communication gateway to the tubular motor, or to charge the battery of the tubular motor according to the output voltage of the POE module transformer.

2. The PoE control box according to claim 1, characterized in that, The POE module transformer includes: The rectifier unit includes two bridge rectifiers, which are connected to the Ethernet communication gateway respectively, and are used to rectify the network port voltage of the Ethernet communication gateway into DC voltage.

3. A POE control box according to claim 2, characterized in that, A protection diode is also provided between the output terminals of the two bridge rectifiers.

4. A POE control box according to claim 2, characterized in that, The POE module transformer also includes: The step-down control unit is connected to the output terminals of the two bridge rectifiers respectively, and is used to step down the DC voltage output by the two bridge rectifiers to output the motor charging voltage.

5. A POE control box according to claim 4, characterized in that, The output terminal of the step-down control unit is also equipped with an output filter unit, which is used to filter the motor charging voltage output by the step-down control unit.

6. A PoE control box according to claim 1, characterized in that, Also includes: A network adapter, connected to an Ethernet communication gateway, is used to establish communication between the communication port and the Ethernet communication gateway.

7. A PoE control box according to claim 6, characterized in that, A signal conditioning and isolation circuit is also provided between the network adapter and the Ethernet communication gateway.

8. A POE control box according to claim 1, 2, or 4, characterized in that, The POE control box also includes: The step-down module is connected to the output terminal of the POE module transformer and is used to step down the output voltage of the POE module transformer to output the working voltage of the POE control box.

9. A PoE control box according to claim 1, characterized in that, Also includes: The control module is located between the Ethernet communication gateway and the Type-C interface. It is used to forward data received by the Ethernet communication gateway, or, in response to the pressed state of the control button on the PoE control box housing, to output control signals for the tubular motor according to preset control logic.

10. A PoE control box according to claim 9, characterized in that, Also includes: Indicator lights, located on the outer casing of the POE control box, are connected to the control module and are used to indicate the operating status of the tubular motor based on the control signals output by the control module.

Images