Time-sharing starting circuit with state monitoring function

Abstract

The utility model discloses a time-sharing starting circuit with a state monitoring function. The time-sharing starting circuit comprises a power distribution circuit, a voltage acquisition circuit, a current acquisition circuit, a controller, a control circuit, a display circuit, a first power supply circuit and a second power supply circuit, the controller is connected with the power distribution circuit through the control circuit, the power distribution circuit is connected with the display circuit through the voltage acquisition circuit and the controller, the power distribution circuit is connected with the display circuit through the current acquisition circuit and the controller, the first power supply circuit is connected with the power distribution circuit, and the second power supply circuit is respectively connected with the controller, the control circuit and the display circuit. The controller can receive an external control signal, and when a plurality of power distribution output ports need to be opened, the control circuit controls each output port of the power distribution circuit to be started in a time-sharing manner, so that time-sharing starting control and time-delay output can be realized, equipment or lines are prevented from being damaged due to overlarge starting current during simultaneous starting, and the requirement of multi-path voltage output is met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic power distribution, and more specifically, to a time-sharing starting circuit with a state monitoring function. Background Art

[0002] Time-sharing start control technology mainly includes: single-chip microcomputer control, DSP control, and programmable logic controller (PLC) control. The shortcomings in the application process are: (1) Single-chip microcomputer control technology runs slowly and cannot meet the needs of high-speed control; the storage capacity of the single-chip microcomputer is small, so its application scope is subject to certain restrictions; (2) Many DSP control systems have restrictions on delays, and digital signal processing must be completed within a certain fixed time. Delayed processing (or batch processing) is not acceptable; (3) The hardware equipment and software programming costs of the PLC control system are relatively high, which is not suitable for small-scale production or individual users, and the development cost is relatively high. Summary of the invention

[0003] The present invention is to provide a time-sharing starting circuit with a state monitoring function to achieve time-sharing starting control, delayed output, avoid excessive starting current during simultaneous starting and damage to equipment or lines, and have multiple voltage outputs to meet the requirements of multiple voltage outputs.

[0004] In order to achieve the above objectives, the technical solutions adopted in this disclosure are as follows:

[0005] A time-sharing starting circuit with a state monitoring function comprises the following circuits;

[0006] A power distribution circuit for outputting a plurality of power distribution outlets;

[0007] A voltage collection circuit, used for collecting voltages on a plurality of power distribution outlet lines;

[0008] A current collection circuit, used for collecting currents on a plurality of power distribution outlet lines;

[0009] A controller is used to receive the collected voltage signal and current signal and generate a time-sharing start signal;

[0010] A control circuit capable of receiving a time-sharing start signal from the controller and starting each output port of the plurality of power distribution circuits in a time-sharing manner;

[0011] A display circuit capable of receiving and displaying voltage and current signals from the controller;

[0012] A first power supply circuit, used to provide power to the power distribution circuit;

[0013] A second power supply circuit, used to provide power to the controller, the control circuit and the display circuit;

[0014] The controller is connected to the power distribution circuit through the control circuit, the power distribution circuit is connected to the display circuit through the voltage acquisition circuit and the controller, the power distribution circuit is connected to the display circuit through the current acquisition circuit and the controller, the first power supply circuit is connected to the power distribution circuit, and the second power supply circuit is respectively connected to the controller, the control circuit and the display circuit.

[0015] Optionally, the control circuit includes a plurality of independent drive circuit branches, each of the drive circuit branches drives a power distribution output port of the power distribution circuit, and the controller has a plurality of control ports for controlling the drive circuit branches, and each of the control ports is connected to the power distribution circuit through one of the drive circuit branches;

[0016] Each of the drive circuit branches includes a driver and a first optical coupler, and the control port is connected to the power distribution circuit through the driver and the first optical coupler in sequence.

[0017] Optionally, a plurality of the drivers share a multi-channel driver chip module.

[0018] Optionally, the power distribution circuit comprises a plurality of independent power distribution circuit branches, each of which supplies power to one of the power distribution outlets;

[0019] The power distribution circuit branch includes a relay, the first power supply circuit is connected to one of the power distribution output ports through one of the relays, and the control end of the relay is connected to the control circuit.

[0020] Optionally, the voltage acquisition circuit includes multiple first voltage acquisition modules, one first voltage acquisition module is installed on each of the power distribution circuit branches, one first voltage acquisition module is connected in parallel to each of the power distribution output ports, and the signal output port of the first voltage acquisition module is connected to the controller.

[0021] Optionally, a plurality of the first voltage collection modules are integrated into one voltage collector.

[0022] Optionally, the current acquisition circuit includes multiple first current acquisition modules, one of the first current acquisition modules is installed on each of the distribution circuit branches, the relay is connected to the distribution output port through the first current acquisition module, and the signal output port of the first current acquisition module is also connected to the controller.

[0023] Optionally, a plurality of the first current collection modules are integrated into one current collector.

[0024] Optionally, the first power supply circuit includes a power supply interface, a second current acquisition module and a second voltage acquisition module. The power supply interface is used to connect an external power supply. The power supply interface is connected to the power distribution circuit through the second current acquisition module. The second voltage acquisition module is also connected in parallel to the power supply interface.

[0025] Optionally, the second power supply circuit includes a power supply conversion module, and the first power supply circuit is respectively connected to the controller, the control circuit and the display circuit through the power supply conversion module.

[0026] In the present disclosure, the controller can receive external control signals. When multiple power distribution output ports need to be opened, the control circuit controls the time-sharing start of each output port of the power distribution circuit, which can realize time-sharing start control and delayed output, so as to avoid damage to the equipment or lines due to excessive starting current when starting at the same time, and meet the requirements of multi-channel voltage output. In addition, voltage collection circuits and current collection circuits are arranged on multiple power distribution output lines to collect the current and voltage of the power distribution output ports, so as to facilitate monitoring and display of the output voltage and current. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 The present invention is a schematic diagram of the structure of a time-sharing starting circuit with a state monitoring function.

[0029] Figure 2 The circuit principle of the time-sharing starting circuit with state monitoring function disclosed in this disclosure Figure 1 .

[0030] Figure 3 The circuit principle of the time-sharing starting circuit with state monitoring function disclosed in this disclosure Figure 2 . DETAILED DESCRIPTION

[0031] The preferred embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present disclosure can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present disclosure.

[0032] See also Figure 1As shown, a time-sharing starting circuit with a state monitoring function includes a power distribution circuit 1, a voltage acquisition circuit 2, a current acquisition circuit 3, a controller 4, a control circuit 5, a display circuit 6, a first power supply circuit 7 and a second power supply circuit 8, wherein the controller 4 is connected to the power distribution circuit 1 through the control circuit 5, the power distribution circuit 1 is connected to the display circuit 6 through the voltage acquisition circuit 2 and the controller 4, the power distribution circuit 1 is connected to the display circuit 6 through the current acquisition circuit 3 and the controller 4, the first power supply circuit 7 is connected to the power distribution circuit 1, and the second power supply circuit 8 is connected to the controller 4, the control circuit 5 and the display circuit 6 respectively; wherein,

[0033] The power distribution circuit 1 is used to output multiple power distribution output ports, wherein there may be multiple output lines, and the multiple power distribution output ports can provide power to multiple different electrical devices;

[0034] The voltage acquisition circuit 2 is used to acquire the voltage on the multiple power distribution outlet lines; the current acquisition circuit 3 is used to acquire the current on the multiple power distribution outlet lines;

[0035] The controller 4 is used to receive the collected voltage signal and current signal. The current and voltage collected on a certain power distribution output line can be converted into voltage signal and current signal after identification by the controller 4, and transmitted to the display in the display circuit 6 for display; the controller 4 can also receive external control signals and generate time-sharing start signals; when multiple power distribution output ports need to be started, multiple power distribution output ports are started in time and delayed output to avoid damage to the equipment or line due to excessive starting current when starting at the same time, so as to meet the requirements of multi-channel voltage output; this function can be realized by simple software programming, and the program belongs to the prior art. Those skilled in the art can conveniently realize the program function according to this function. The controller can use ALLENTEK FLJTE STM32F103, which has small size, fast operation speed, high reliability and stable operation. It plays the role of receiving RS485 serial signals sent by the voltage acquisition circuit 2 and the current acquisition circuit 3 and controlling the real-time transmission of digital signals.

[0036] The control circuit 5 can receive the time-sharing start signal of the controller 4, and start the output ports of the multiple power distribution circuits 1 in time. When the control circuit 5 receives the time-sharing start signal, the control circuit 5 can start the multiple power distribution output ports on the power distribution circuit 1 in time in sequence according to the time-sharing start signal;

[0037] The display circuit 6 can receive the voltage signal and current signal output by the controller 4 and display, monitor and display the voltage and current of each power distribution output port;

[0038] The first power supply circuit 7 is used to provide power to the power distribution circuit 1. The power supply is generally a high-voltage power supply, which is used to supply power to other electrical devices.

[0039] The second power supply circuit 8 is used to provide power to the controller 4, the control circuit 5 and the display circuit 6. The power supply is generally a low-voltage power supply, which supplies power to the control-related circuits;

[0040] In another embodiment, the control circuit 5 includes a plurality of independent drive circuit branches, each of which drives a power distribution output port of the power distribution circuit 1, and the controller 4 has a plurality of control ports for controlling the drive circuit branches, each of which is connected to the power distribution circuit 1 through one of the drive circuit branches;

[0041] See also Figure 2 As shown, each of the drive circuit branches includes a driver and a first optocoupler, and the control port is connected to the power distribution circuit 1 through the driver and the first optocoupler in turn. Preferably, multiple drivers share a multi-channel driver chip module (D4 or D5), and the multi-channel driver chip module uses 54LS244 to enhance the driving capability; multiple first optocouplers can be integrated in an optocoupler module (D1 or D2); the circuit integration is improved, and it is also convenient for circuit board manufacturing. The strong anti-interference ability of the optocoupler realizes the electrical isolation of the input and output ends. The optocoupler uses TH627-4, and a 470Ω pull-up resistor is connected to pins 1, 3, 5, and 7, so that when the input pins 2, 4, 6, and 8 are at a low level, the optocoupler is in a working state.

[0042] See also Figure 3 As shown, the power distribution circuit 1 includes a plurality of independent power distribution circuit branches, each of which supplies power to one of the power distribution outlets (XS02-XS13), which are generally sockets;

[0043] The power distribution circuit branch includes a relay (K2-K12), the first power supply circuit 7 is connected to one of the power distribution output ports (XS02-XS13) through one of the relays (K2-K12), and the control end of the relay is connected to the control circuit. A reverse diode is connected between the pins 10, 12, 14, and 16 of the photoelectric coupler (D1-D3) and the +27V output by the second power supply circuit 8, and the diode is connected in parallel with the two ends of the DC coil of the relay (K2-K12) to discharge the back electromotive force generated by the relay (K2-K12) coil when it is powered on.

[0044] One of the distribution circuit branches, or another independent distribution circuit branch is directly connected to the first power supply circuit 7. When the device is powered on, the distribution circuit branch is directly powered on, and other distribution circuit branches that need to be controlled by the control circuit 5 are controlled by time-sharing signals.

[0045] See also Figure 2 As shown, the voltage acquisition circuit 2 includes a plurality of first voltage acquisition modules, one of which is installed on each of the power distribution circuit branches, one of which is connected in parallel to each of the power distribution output ports (XS02-XS13), and the signal output port of the first voltage acquisition module is connected to the controller 4. Preferably, a plurality of the first voltage acquisition modules are integrated into a voltage collector. The voltage collector can be a voltage acquisition module with a model of ZH-40141-14N2, which has a 14-way AC combination, for real-time acquisition of each output voltage, and transmits the collected voltage value to the controller 4 through the serial port RS485, and the controller 4 then transmits the received voltage value to the LCD screen in the display circuit 6 through the I / O port for display.

[0046] See also Figure 2 As shown, the current acquisition circuit 3 includes a plurality of first current acquisition modules, each of which is installed on the power distribution circuit branch. The relay (K2-K12) is connected to the power distribution output port (XS02-XS13) through the first current acquisition module, and the signal output port of the first current acquisition module is also connected to the controller. A plurality of the first current acquisition modules are integrated into a current collector. The current collector can be selected as the model ZH-40142-14N2, which has a current acquisition module with a 14-way AC combination, and is used to collect the output current value of each channel in real time. The 12-way AC output in the present disclosure first reduces the current in proportion through a current transformer, and then outputs it to the current collector. The current collector transmits the collected current value to the controller 4 through the serial port RS485, and the controller 4 then transmits the received current value to the LCD screen in the display circuit 6 through the I / O port and displays it.

[0047] In another embodiment, see Figure 2As shown, the first power supply circuit 7 includes a power supply interface, a second current acquisition module and a second voltage acquisition module. The power supply interface is used to connect an external power supply. The power supply interface is connected to the power distribution circuit 1 through the second current acquisition module. The second voltage acquisition module is also connected in parallel to the power supply interface. The second current acquisition module and the second voltage acquisition module are used to detect the current and voltage output by the first power supply circuit, so as to facilitate the display circuit to monitor and display. The second power supply circuit 8 includes a power conversion module. The first power supply circuit 7 is respectively connected to the controller 4, the control circuit 1 and the display circuit 6 through the power conversion module. The model of the power conversion module is HOWE-IJK75D527, and the output mode is dual-channel, one channel +5V, one channel +27V, where +5V provides voltage for the control 4, the control circuit 5 and the display circuit 6, and +27V provides voltage for the voltage collector, the current collector and the coil of the relay.

[0048] The purpose of the present invention is to realize time-sharing start-up control and delayed output to avoid damage to equipment or lines due to excessive starting current when starting at the same time, and to have 12 voltage outputs to meet the requirements of multi-channel voltage outputs; and to be able to display the output voltage and current values ​​in real time, and to indicate the output status with indicator lights; the controller 4 uses the chip ALLENTEK FLJTESTM32F103, which has a high operating speed and stable control; and uses an optocoupler to isolate the input and output signals to enhance anti-interference and driving capabilities.

[0049] Although the embodiments of the present disclosure are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described by the claims of the present disclosure, they should be within the protection scope of the present disclosure.

Claims

1. A time-sharing starting circuit with a state monitoring function, characterized in that: Includes the following circuits; A power distribution circuit for outputting a plurality of power distribution outlets; A voltage collection circuit, used for collecting voltages on a plurality of power distribution outlet lines; A current collection circuit, used for collecting currents on a plurality of power distribution outlet lines; A controller, used for receiving the collected voltage signal and current signal; Generate time-sharing start signal; A control circuit capable of receiving a time-sharing start signal from the controller and starting each output port of the plurality of power distribution circuits in a time-sharing manner; A display circuit capable of receiving and displaying voltage and current signals from the controller; A first power supply circuit, used to provide power to the power distribution circuit; A second power supply circuit, used to provide power to the controller, the control circuit and the display circuit; The controller is connected to the power distribution circuit through the control circuit, the power distribution circuit is connected to the display circuit through the voltage acquisition circuit and the controller, the power distribution circuit is connected to the display circuit through the current acquisition circuit and the controller, the first power supply circuit is connected to the power distribution circuit, and the second power supply circuit is respectively connected to the controller, the control circuit and the display circuit.

2. The time-sharing starting circuit with a state monitoring function according to claim 1, characterized in that: The control circuit includes a plurality of independent drive circuit branches, each of which drives a power distribution output port of the power distribution circuit, and the controller has a plurality of control ports for controlling the drive circuit branches, each of which is connected to the power distribution circuit through a drive circuit branch; Each of the drive circuit branches includes a driver and a first optical coupler, and the control port is connected to the power distribution circuit through the driver and the first optical coupler in sequence.

3. The time-sharing starting circuit with a state monitoring function according to claim 2 is characterized in that: A plurality of the drivers share a multi-channel driver chip module.

4. The time-sharing starting circuit with a state monitoring function according to claim 1, characterized in that: The power distribution circuit comprises a plurality of independent power distribution circuit branches, each of which supplies power to one of the power distribution outlets; The power distribution circuit branch includes a relay, the first power supply circuit is connected to one of the power distribution output ports through one of the relays, and the control end of the relay is connected to the control circuit.

5. The time-sharing starting circuit with a state monitoring function according to claim 4, characterized in that: The voltage acquisition circuit includes multiple first voltage acquisition modules, one of the first voltage acquisition modules is installed on each of the power distribution circuit branches, one of the first voltage acquisition modules is connected in parallel to each of the power distribution output ports, and the signal output port of the first voltage acquisition module is connected to the controller.

6. The time-sharing starting circuit with a state monitoring function according to claim 5, characterized in that: A plurality of the first voltage acquisition modules are integrated into a voltage collector.

7. The time-sharing starting circuit with a state monitoring function according to claim 4, characterized in that: The current acquisition circuit includes multiple first current acquisition modules, and one first current acquisition module is installed on each distribution circuit branch. The relay is connected to the distribution output port through the first current acquisition module, and the signal output port of the first current acquisition module is also connected to the controller.

8. The time-sharing starting circuit with a state monitoring function according to claim 7, characterized in that: A plurality of the first current acquisition modules are integrated into one current collector.

9. The time-sharing starting circuit with a state monitoring function according to claim 1, characterized in that: The first power supply circuit includes a power supply interface, a second current acquisition module and a second voltage acquisition module. The power supply interface is used to connect an external power supply. The power supply interface is connected to the power distribution circuit through the second current acquisition module. The second voltage acquisition module is also connected in parallel to the power supply interface.

10. The time-sharing starting circuit with a state monitoring function according to claim 1, characterized in that: The second power circuit includes a power conversion module, and the second power circuit is respectively connected to the controller, the control circuit and the display circuit through the power conversion module.

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