Power control module and device

Abstract

The utility model discloses a power control module and device, the power control module comprises a control circuit and a plurality of control modules connected with the control circuit, and each control module comprises a switch unit, a contactor, an active power filter and an output port. The control circuit is connected with the switch units in the control modules so as to control on-off of the switch units, the first ends of the switch units are connected with power voltage, and the second ends of the switch units are connected with coil terminals of the contactors so as to control on-off between the coil terminals of the contactors and the power voltage. A first contact of the contactor is connected with the input voltage, a second contact of the contactor is connected with the output port, and the active power filter is connected with the first contact of the contactor to filter the input voltage. The power control module and device can simultaneously control the power output of a plurality of channels, solve the problems of automatic timing test and multi-channel test, and improve the test efficiency and convenience.

Description

Technical Field

[0001] The utility model belongs to the technical field of power control, and in particular relates to a power control module and a device. Background Art

[0002] In the fiber demodulation system, it is necessary to provide the fiber demodulation instrument with multiple channels of high-precision DC power to heat the optical cable to meet the needs of refined measurement. Existing power generation and control equipment are mostly single-channel output transformers, whose output power needs to be manually adjusted, and are increasingly unable to meet the current high-precision, remote-controlled, multi-channel fiber demodulation test needs.

[0003] Therefore, in order to solve the above technical problems, it is necessary to provide a power control module and device that can automatically control the output power of the power generating equipment and multi-channel coordination, so as to realize the automatic regulation of the energy required for the operation of the optical fiber demodulation system.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a power control module and device, which can realize automatic, multi-channel and flexible control of power generating equipment.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a power control module, including a control circuit and several control modules connected to the control circuit, the control module including a switch unit, a contactor, an active power filter and an output port, the control circuit is connected to the switch unit in each control module to control the on and off of each switch unit, the first end of the switch unit is connected to the power supply voltage, the second end of the switch unit is connected to the coil terminal of the contactor to control the on and off between the coil terminal of the contactor and the power supply voltage, the first contact of the contactor is connected to the input voltage, the second contact of the contactor is connected to the output port, the output port is used to output the input voltage to the outside, and the active power filter is connected to the first contact of the contactor to filter the input voltage.

[0007] In one or more embodiments of the present invention, the control module also includes a current detection module, which is connected to the control circuit, the second contact of the contactor and the output port. The current detection module is used to detect the current between the second contact of the contactor and the output port and generate a feedback signal. The control circuit also controls the switch unit based on the feedback signal.

[0008] In one or more embodiments of the present invention, the control module further includes a light emitting unit, the light emitting unit is connected to the second end of the switch unit, and the switch unit is used to control the on-off between the light emitting unit and the power supply voltage.

[0009] In one or more embodiments of the present utility model, the power control module also includes a first terminal row and / or a second terminal row, the first terminal row is used for wiring between the power supply voltage and the power supply end of the switching unit, and the second terminal row is used for wiring between the input voltage and the first contact of the contactor.

[0010] In one or more embodiments of the present invention, the power control module further includes a plurality of communication ports, wherein the communication ports are connected to the control circuit and are used for signal transmission between the control circuit and external devices.

[0011] In one or more embodiments of the present invention, the power control module further includes a communication protocol conversion module connected to the communication port and the control circuit.

[0012] In one or more embodiments of the present invention, the power control module also includes a first input port and a second input port, the first input port is used to connect the first end of the switch unit and the power supply voltage, and the second input port is used to connect the first contact of the contactor and the input voltage.

[0013] A specific embodiment of the utility model further provides a power control device, comprising the above-mentioned power control module, and the power control device further comprises a housing for installing the power control module.

[0014] In one or more embodiments of the present invention, a heat dissipation component is disposed on the surface of the housing.

[0015] In one or more embodiments of the present invention, the heat dissipation assembly includes a plurality of heat dissipation fins parallel to each other.

[0016] Compared with the prior art, the power control module and device of the utility model can control the power output of multiple channels at the same time, solve the problems of automated timing testing and multi-channel testing, improve test efficiency and convenience, and greatly reduce the cost of optical fiber demodulation testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a circuit schematic diagram of a power control module in one embodiment of the utility model;

[0019] Figure 2 It is a front schematic diagram of a power control device in one embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the back side of a power control device in one embodiment of the utility model.

[0021] Figure 4 Schematic diagram of the internal structure of a power control device in one embodiment of the utility model.

[0022] Figure 5 FIG. 2 is another schematic diagram of the internal structure of the power control device in one embodiment of the utility model.

[0023] Figure 6 It is a side schematic diagram of a power control device in one embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] The words "coupled" or "connected" or "connected" in the specification include both direct connection and indirect connection. Indirect connection is a connection through an intermediate medium, such as a connection through an electrically conductive medium, which may have parasitic inductance or parasitic capacitance; indirect connection may also include connection through other active or passive devices on the basis of achieving the same or similar functional purposes, such as connection through circuits or components such as switches and follower circuits. In addition, in the present utility model, words such as "first" and "second" are mainly used to distinguish one technical feature from another technical feature, and do not necessarily require or imply that there is a certain actual relationship, quantity or order between these technical features.

[0026] like Figure 1As shown, the power control module in an embodiment of the utility model includes a control circuit 10, a control module, a first input port 71, a second input port 72 and a communication port. The control module is connected to the control circuit 10, and includes a switch unit 20, a contactor 30, an active power filter 40, a current detection module 50, an output port 73, a light emitting unit and a switch S1.

[0027] In one embodiment, 16 control modules are provided, which can provide 16 channels of power output for the optical fiber demodulation test system. In other embodiments, the number of control modules can be set according to actual needs.

[0028] The first input port 71 is used to connect the power supply voltage. In one embodiment, the power supply voltage is a 12V DC voltage, and the first input port 71 includes a 12V output terminal and a 0V ground terminal. The 12V output terminal of the first input port 71 is connected to the first end of the switch S1, the 0V ground terminal of the first input port 71 is connected to the first negative electrode of the control circuit 10 and the switch unit 20, and the second end of the switch S1 is connected to the first positive electrode of the control circuit 10 and the switch unit 20. The switch S1 is used to control the on-off between the first positive electrode of the control circuit 10 and the switch unit 20 and the 12V output terminal of the first input port 71, and is the power-on switch of the entire power control module.

[0029] The control circuit 10 is connected to the switch units 20 in each control module to control the on and off of each switch unit 20 respectively, thereby meeting the working requirements of independent control of multiple channels.

[0030] The second end of the switch unit 20 is connected to the coil terminal of the contactor 30 to control the on-off between the coil terminal of the contactor 30 and the power supply voltage.

[0031] In one embodiment, the switch unit 20 is a relay, and the second end of the switch unit 20 includes a normally open end NO and a common end COM, the normally open end NO is connected to the coil terminal A1 of the contactor 30, and the common end COM is connected to the coil terminal A2 of the contactor 30. Under the control of the control circuit 10, the normally open end NO and the common end COM are respectively connected to the positive and negative poles of the first end of the switch unit 20, powering the coil of the contactor 30, and then controlling the first contact L1 and the second contact L2 of the contactor 30 to be closed and connected.

[0032] The second input port 72 is used to connect the input voltage, the first contact L1 of the contactor 30 is connected to the positive terminal of the second input port 72, the second contact L2 of the contactor 30 is connected to the current detection module 50, the current detection module 50 is connected to the anode interface of the output port 73 and the control circuit 10, the cathode interface of the output port 73 is connected to the negative terminal of the second input port 72, and the output port 73 is used to output the input voltage to the outside. The current detection module 50 is used to detect the current between the second contact L2 of the contactor 30 and the output port 73 and generate a feedback signal, and the control circuit 10 also controls the on and off of the switch unit 20 based on the feedback signal.

[0033] The contactor 30 is preferably a ceramic contactor, which has excellent high temperature resistance, corrosion resistance, good electrical insulation performance, arc resistance performance, and voltage resistance performance, ensuring the safety and reliability of electrical connection.

[0034] The active power filter 40 is connected to the first contact L1 of the contactor 30 to filter the input voltage. The active power filter 40 can dynamically suppress harmonics of the input voltage, compensate for the changing reactive power, and realize dynamic tracking compensation.

[0035] The communication port is connected to the control circuit 10 and is used for signal transmission between the control circuit 10 and external devices. In one embodiment, two communication ports are provided, namely a first communication port 74 and a second communication port 75.

[0036] In an actual working scenario, the first communication port 74 is used to receive a master control signal sent by an external device (such as an optical fiber demodulator) and transmit the master control signal to the control circuit 10. The master control signal includes information such as the channel, size, and time of the power required for the optical fiber demodulator to work. The control circuit 10 controls the switch unit 20 of the specified channel to turn on at the specified time based on the master control signal.

[0037] The second communication port 75 is used to connect the power generator, which is used to generate an input voltage. The control circuit 10 generates a power output control instruction based on the master control signal, the feedback signal, and the actual working conditions of the switch unit and the contactor, and transmits the power output control instruction to the power generator through the second communication port 75. The power generator adjusts the generated input voltage according to the power output control instruction.

[0038] In the above process, the optical fiber demodulation system forms a complete power control closed loop. The power control module in this application plays a role in connecting and adjusting the control signal, so that the entire system has functions such as remote, timed disconnection and dense distributed heating of optical cables, and has a wide range of application scenarios.

[0039] The power control module further includes a communication protocol conversion module connected to the first communication port 74, the second communication port 75 and the control circuit 10. The communication protocol conversion module is used for mutual conversion of communication protocols used for signal exchange between the control circuit 10 and external devices.

[0040] In one embodiment, the first communication port 74 and the second communication port 75 are both RS232 serial ports, the control circuit 10 receives RS485 protocol signals, and the communication protocol conversion module is a 232 to 485 module.

[0041] The light emitting unit is connected to the first terminal NO and the second terminal of the switch unit 20 to emit light based on the control of the control voltage. The light emitting unit is used as a working indicator light of each channel to indicate the channel of the current power output.

[0042] The power control module also includes a first terminal block and a second terminal block ( Figure 1 The first terminal row is used for connection between the positive pole of the first end of the switch unit 20 and the 12V output terminal of the first input port 71, and between the negative pole of the first end of the switch unit 20 and the 0V ground terminal of the first input port 71. The second terminal row is used for connection between the first contact point L1 of the contactor 30 and the positive terminal of the second input port 72.

[0043] like Figure 2 As shown, an embodiment of the present invention further provides a power control device, including the above-mentioned power control module and a housing 80 for installing the power control module.

[0044] like Figure 2 As shown, the front side of the housing 80 is provided with a light emitting unit 60 and a switch S1. Figure 3 As shown, a first input port 71 , a second input port 72 , an output port 73 , a first communication port 74 and a second communication port 75 are installed on the back of the housing 80 .

[0045] like Figure 4 and Figure 5 As shown, an upper plate 81 and a lower plate 82 are disposed in the housing 80, which are respectively used to mount other circuit components in the power control module.

[0046] Specifically, Figure 4 As shown, the contactor 30 and the circuit system 91 are mounted on the upper plate 81, wherein the circuit system 91 includes a switch unit 20, a current detection module 50, an active power filter 40 and a control circuit 10. Figure 5 As shown, a first terminal row 92 and a second terminal row 93 are mounted on the lower plate 82 .

[0047] The use of an upper and lower layered assembly structure not only facilitates the wiring between various circuit components, reduces the overall wiring distance, makes the internal structure of the power control device simple and clear, and is easy to assemble, but also is more conducive to circuit heat dissipation, and can effectively reduce the heat generated by the device when it is working. At the same time, compared with other multi-channel power control products on the market, the power control device of this application is smaller in size, convenient and flexible to use.

[0048] like Figure 6 As shown, a heat dissipation assembly 83 is disposed on the surface of the housing 80. In one embodiment, the heat dissipation assembly 83 is disposed on the left and right sides of the housing 80. In other embodiments, the heat dissipation assembly 83 can also be disposed on other surfaces of the housing 80 as required.

[0049] Specifically, the heat dissipation assembly 83 includes a plurality of mutually parallel heat dissipation fins. The heat dissipation area is increased by the heat dissipation fins, which has a good heat dissipation effect, so that the device does not need to add a fan, heat dissipation holes and other structures, and the entire machine housing does not need to have holes, thereby improving the dustproof function of the device.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power control module, characterized in that: The invention comprises a control circuit and several control modules connected to the control circuit, wherein the control module comprises a switch unit, a contactor, an active power filter and an output port, the control circuit is connected to the switch unit in each control module to control the on and off of each switch unit, the first end of the switch unit is connected to the power supply voltage, the second end of the switch unit is connected to the coil terminal of the contactor to control the on and off between the coil terminal of the contactor and the power supply voltage, the first contact of the contactor is connected to the input voltage, the second contact of the contactor is connected to the output port, the output port is used to output the input voltage to the outside, and the active power filter is connected to the first contact of the contactor to filter the input voltage.

2. The power control module according to claim 1, characterized in that: The control module also includes a current detection module, which is connected to the control circuit, the second contact of the contactor and the output port. The current detection module is used to detect the current between the second contact of the contactor and the output port and generate a feedback signal. The control circuit also controls the switch unit based on the feedback signal.

3. The power control module according to claim 1, characterized in that: The control module further includes a light emitting unit, wherein the light emitting unit is connected to the second end of the switch unit, and the switch unit is used to control the on-off between the light emitting unit and the power supply voltage.

4. The power control module according to claim 1, characterized in that: The power control module further comprises a first terminal row and / or a second terminal row, wherein the first terminal row is used for connecting the power supply voltage to the power supply end of the switch unit, and the second terminal row is used for connecting the input voltage to the first contact of the contactor.

5. The power control module according to claim 1, characterized in that: The power control module further comprises a plurality of communication ports, wherein the communication ports are connected to the control circuit and are used for signal transmission between the control circuit and external devices.

6. The power control module according to claim 5, characterized in that: The power control module also includes a communication protocol conversion module connected to the communication port and the control circuit.

7. The power control module according to claim 1, characterized in that: The power control module further comprises a first input port and a second input port, wherein the first input port is used to connect a first end of the switch unit and a power supply voltage, and the second input port is used to connect a first contact of the contactor and an input voltage.

8. A power control device, comprising the power control module according to any one of claims 1 to 7, characterized in that: The power control device also includes a housing for mounting the power control module.

9. The power control device according to claim 8, characterized in that: A heat dissipation component is arranged on the surface of the shell.

10. The power control device according to claim 9, characterized in that: The heat dissipation assembly includes a plurality of heat dissipation fins which are parallel to each other.

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