Rapid switching control device of ATS switch

Abstract

The utility model discloses a rapid switching control device for an ATS switch. The rapid switching control device comprises a controller and a switching-on and switching-off signal feedback input acquisition module. The switching-on and switching-off signal feedback input acquisition module is connected with the controller and is used for detecting a switching-off signal of the ATS switch; the switching-on and switching-off signal feedback input acquisition module comprises an ATS switching-on and switching-off monitoring circuit, the ATS switching-on and switching-off monitoring circuit comprises a sampling resistor, one end of the sampling resistor is connected with the ATS switch through a reverse cut-off diode, and the other end of the sampling resistor is connected with the controller; the ATS switch and the reverse cut-off diode are isolated and grounded through a transient suppression diode; a power supply is connected between the reverse cut-off diode and the sampling resistor through a pull-up resistor. And the sampling resistor and the controller are grounded through a current-limiting resistor and a filter capacitor. The device is small in size, and the cost and the device installation space are saved.

Description

Technical Field

[0001] The utility model relates to an ATS switch switching control device, in particular to an ATS switch fast switching control device. Background Art

[0002] ATS switches are mainly used in emergency power supply systems to automatically switch the load circuit from one power source to another (backup) power source to ensure continuous and reliable operation of important loads. CN 210297341 U provides a dual power automatic switching and protection device, which can effectively monitor the ATS switch in real time by using a photoelectric coupler to obtain its opening status, thereby avoiding live operation accidents caused by opening faults.

[0003] With the development of science and technology, the improvement of people's living standards, the degree of automation is getting higher and higher, and the application of big data has gradually penetrated into all walks of life. The application of big data cannot be separated from the support of data, which requires a large amount of data communication; and in the process of data communication, the data transmission and processing equipment requires uninterrupted power supply. Data transmission equipment is a precision instrument. For precision instruments, the equipment installation space is limited and it is impossible to increase the large external devices.

[0004] Therefore, it is extremely necessary to design a small, cost-effective ATS switch control device that matches this uninterruptible power supply situation to achieve reliable switching and protection of dual power supply. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an ATS fast switching control device with a simple structure for use in uninterruptible power supply occasions, which effectively solves the problems of limited equipment installation space and relatively low budget cost in such power consumption occasions. It can be applied to a variety of working environments, has a simple structure and high reliability.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An ATS switch fast switching control device comprises a controller and a closing and opening signal feedback input acquisition module; the closing and opening signal feedback input acquisition module is connected to the controller and is used to detect the opening signal of the ATS switch;

[0008] The closing and opening signal feedback input acquisition module includes an ATS closing and opening monitoring circuit, and the ATS closing and opening monitoring circuit includes a sampling resistor, one end of the sampling resistor is connected to the ATS switch through a reverse cut-off diode, and the other end is connected to the controller; the ATS switch and the reverse cut-off diode are also isolated and grounded through a transient suppression diode; the reverse cut-off diode and the sampling resistor are also connected to a power supply through a pull-up resistor; the sampling resistor and the controller are also grounded through a current limiting resistor and a filter capacitor.

[0009] The beneficial effects of the utility model are:

[0010] The utility model uses the closing and opening signal feedback input acquisition module, and the controller can quickly and accurately acquire the closing feedback signal of the ATS switch, and timely send out the switching control signal to achieve accurate and rapid switching of the ATS switch; because the opening signal feedback input acquisition module uses the sampling resistor to detect the power supply status of the power supply in real time, no active devices are required, the module is small in size, easy to operate and install, and saves costs and equipment installation space. And because the resistor in the utility model. Relays and the like are electronic components with stable performance in the process of wet and hot alternation, they can be applied to various complex working environments and can work reliably under extreme conditions.

[0011] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the following description or drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural block diagram of the utility model;

[0013] Figure 2 This is the schematic diagram of the closing and opening signal feedback input acquisition module of the utility model;

[0014] Figure 3 It is a circuit principle diagram of the relay output control module of the utility model. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1As shown, the utility model provides an ATS switch fast switching control device, including a controller, an AC power supply module, an AC power acquisition module, a relay output control module, a display screen, a storage module, a key input module and a host computer communication module. The AC power supply module is connected to the controller and is used to directly power the device with an AC industrial frequency power supply, without the need to install a DC power supply.

[0017] The AC power collection module is connected to the controller and is used to collect the current and voltage of the power supply.

[0018] The relay output control module is connected to the controller for controlling the load.

[0019] The key input module is connected to the controller for operating the controller. In one embodiment, the keys in the key input module are reliable mechanical touch keys + soft and wear-resistant silicone masks, which are easy to operate.

[0020] The host computer communication module is connected to the controller for communication. In one embodiment, the interface of the host computer communication module adopts an RS485 interface or a USB interface.

[0021] The display screen is connected to the controller and is used to display detection data, such as whether the power supply is normal, and whether one power supply or two power supplies are currently being provided.

[0022] When in use, the controller adopts a 32-bit ARM single-chip microcomputer, with high hardware integration and reliable operation.

[0023] The ATS switch fast switching control device also includes a closing and opening signal feedback input acquisition module, which is connected to the controller and is used to detect the opening signal of the ATS switch.

[0024] like Figure 2 As shown, it is a schematic diagram of the closing and opening signal feedback input acquisition module, the closing and opening signal feedback input acquisition module includes an ATS closing and opening monitoring circuit, the ATS closing and opening monitoring circuit includes a sampling resistor R2, one end of the sampling resistor R2 is connected to the ATS switch through a reverse cut-off diode D8, and the other end is connected to the controller; the ATS switch and the reverse cut-off diode D8 are also isolated and grounded through a transient suppression diode (TVS tube) D7; the reverse cut-off diode D8 and the sampling resistor R2 are also connected to a power supply through a pull-up resistor R1; the sampling resistor R2 and the controller are also grounded through a current limiting resistor R3 and a filter capacitor C1.

[0025] TVS tubes have the advantages of fast response time, high transient power, low capacitance, low leakage current, small breakdown voltage deviation, easy to control clamping voltage, no damage limit, small size, easy installation, etc. When the two poles of the TVS tube are subjected to reverse transient high energy impact, it can quickly change the high impedance between the two poles into low impedance, absorb up to several kilowatts of surge power, and effectively protect the controller at the back end of the circuit from damage by various surge pulses.

[0026] D8 is a reverse cut-off diode. When the signal voltage connected to the input end is higher than +5V, it is reverse cut-off, so that the abnormal input signal at the front end does not flow into the back-end circuit.

[0027] In a specific implementation, the closing and opening signal feedback input acquisition module is directly connected to the PIN1 end of the ATS switch. When the ATS switch is closed, the PIN1 is at a low level, flows into Switch-In1 through the sampling resistor R2, and the Switch-In1 outputs a low level signal to the outside; when the ATS switch is open, the PIN1 is at a high level, flows into Switch-In1 through the sampling resistor R2, and the Switch-In1 outputs a high level signal to the outside. The controller can determine the working state of the ATS switch according to the high and low level signals output by the received Switch-In1.

[0028] In the specific implementation, the closing and opening signal feedback input acquisition module quickly starts the software response through the hardware interrupt in the controller, realizes the timely output of the ATS switch switching, is simple to operate, and the whole device is cost-effective. Specifically, the Switch-In1 port of the closing and opening signal feedback input acquisition module is connected to the external interrupt port of the controller, and the interrupt triggering condition is the rising edge or falling edge of the pulse. When the ATS switch is closed or opened, the microprocessor is triggered to enter the interrupt processing mode, and the ATS switch switching operation is first responded to and processed, so that the ATS switch can achieve the purpose of fast switching.

[0029] In one embodiment, if Figure 3 As shown, the relay output control module includes two power supply switching circuits and a trip control circuit, the two power supply switching circuits are respectively a first power supply switching circuit and a second power supply switching circuit, wherein the first power supply switching circuit is connected to the first power supply contactor coil of the first power supply circuit, and the second power supply switching circuit is connected to the second power supply contactor coil of the second power supply circuit.

[0030] The first power supply switching circuit includes a resistor R5, a transistor Q1, a reverse cut-off diode D2 and a relay K1; one end of the resistor R5 is connected to the port PA1 of the controller, and the other end is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, and the collector is connected to the power supply through the coil of the relay K1, and the two ends of the coil of the relay K1 are also connected in parallel with the reverse cut-off diode D2, and the switch of the relay K1 is connected in parallel to the input terminals 1 and 2 of the first power supply contactor coil;

[0031] The second power supply switching circuit includes a resistor R6, a transistor Q2, a reverse cut-off diode D3 and a relay K2; one end of the resistor R6 is connected to the port PA2 of the controller, and the other end is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, and the collector is connected to the power supply through the coil of the relay K2, and a reverse cut-off diode D is also connected in parallel at both ends of the coil of the relay K2; the switch of the relay K2 is connected in parallel to the input terminals 1 and 2 of the second power supply contactor coil.

[0032] The opening control circuit includes a resistor R7, a transistor Q3, a reverse cut-off diode D4 and a relay K3; one end of the resistor R7 is connected to the port PA3 of the controller, and the other end is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, and the collector is connected to the power supply through the coil of the relay K3, and the two ends of the coil of the relay K3 are also connected in parallel with the reverse cut-off diode D4; the switch of the relay K3 is connected in parallel to the input terminals 1 and 2 of the opening contactor coil;

[0033] When it is detected that the first power supply circuit is supplying power normally and the second power supply circuit is supplying power abnormally, the PA1 port of the controller outputs a high level, at which time the relay K1 contacts are closed, and the load is powered by the first power supply circuit; when it is detected that the first power supply circuit is abnormal and the second power supply circuit is normal, the PA2 port of the controller outputs a high level, the relay K2 contacts are closed, and the load is powered by the second power supply circuit.

[0034] It can be understood that the relay output control module automatically controls the power supply switching by controlling the on and off of transistors Q1 and Q2 by the controller; the controller monitors the current state of the power supply in real time, and switches to another power supply with normal power supply in time when the current power supply is abnormal.

[0035] Furthermore, the controller controls the on and off of the transistor Q3 to automatically control the opening control circuit. When it is detected that the load needs to be opened, the PA3 port of the controller outputs a high level, the contact of the relay K3 is closed, and the load is disconnected.

[0036] The utility model adopts electronic components with stable performance in the process of wet and hot alternation, can be suitable for various complex working environments, and can work reliably under extreme conditions.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An ATS switch fast switching control device, characterized in that: It includes a controller and a closing and opening signal feedback input acquisition module; the closing and opening signal feedback input acquisition module is connected to the controller and is used to detect the opening signal of the ATS switch; The closing and opening signal feedback input acquisition module includes an ATS closing and opening monitoring circuit, and the ATS closing and opening monitoring circuit includes a sampling resistor, one end of the sampling resistor is connected to the ATS switch through a reverse cut-off diode, and the other end is connected to the controller; the ATS switch and the reverse cut-off diode are also isolated and grounded through a transient suppression diode; the reverse cut-off diode and the sampling resistor are also connected to a power supply through a pull-up resistor; the sampling resistor and the controller are also grounded through a current limiting resistor and a filter capacitor.

2. The ATS switch fast switching control device according to claim 1, characterized in that: It also includes a relay output control module, the relay output control module includes a switch-off control circuit, a first power supply switching circuit and a second power supply switching circuit; The opening control circuit includes a resistor R7, a transistor Q3, a reverse cut-off diode D4 and a relay K3; one end of the resistor R7 is connected to the port PA3 of the controller, and the other end is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the power supply through the coil of the relay K3, and the two ends of the coil of the relay K3 are also connected in parallel with the reverse cut-off diode D4; the switch of the relay K3 is connected in parallel to the input terminals 1 and 2 of the opening contactor coil; The first power supply switching circuit includes a resistor R5, a transistor Q1, a reverse cut-off diode D2 and a relay K1; one end of the resistor R5 is connected to the port PA1 of the controller, and the other end is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the power supply through the coil of the relay K1, and the two ends of the coil of the relay K1 are also connected in parallel with the reverse cut-off diode D2, and the switch of the relay K1 is connected in parallel to the input terminals 1 and 2 of the first power supply contactor coil; The second power supply switching circuit includes a resistor R6, a transistor Q2, a reverse cut-off diode D3 and a relay K2; one end of the resistor R6 is connected to the port PA2 of the controller, and the other end is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is connected to the power supply through the coil of the relay K2, and a reverse cut-off diode D is also connected in parallel at both ends of the coil of the relay K2; the switch of the relay K2 is connected in parallel to the input terminals 1 and 2 of the second power supply contactor coil.

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