Detection device based on portable ATS recorder

Abstract

The utility model discloses a detection device based on a portable ATS recorder, and relates to the field of electric power systems, in particular to the field of power supply detection. The problems of large size, heavy weight and the like in the prior art are solved. According to the technical scheme, the detection device based on the portable ATS recorder comprises an instrument case, a display unit and a circuit board, a power management unit, an analog signal acquisition unit, a digital-to-analog converter, a controller unit and a storage unit are arranged in the circuit board. The analog signal acquisition unit acquires voltage and current signals, and the voltage and current signals are processed and then sent to the digital-to-analog converter. The power management unit converts an input signal into a working power supply. The controller unit processes the digital signal and drives the display unit to display the result. According to the utility model, acquisition and power supply switching and data detection are integrated, a tested device can be tested and analyzed without an external power supply, and the device has a good application prospect in the fields of electric power systems and automatic testing.

Description

Technical Field

[0001] The utility model relates to the field of power systems, in particular to the field of power supply status detection. Background Art

[0002] In the dual power supply architecture, ATS (Automatic Transfer Switch) is a commonly used device. Since the operation of the equipment has extremely high requirements for the continuity and stability of power, any power outage may bring immeasurable losses. Therefore, this device can quickly transfer the load to the backup power supply when the main power supply fails to ensure continuous power supply to the load.

[0003] When the device is working normally, the backup power supply is disconnected. When the main power supply in working state is cut off or loses power due to a fault, the voltage detection circuit in the device detects the voltage change at the input end. When the voltage value drops to the set value, the device determines that the power supply has failed and issues a switching command to switch the output voltage to the backup power supply. The entire switching process takes about 1ms. When the main power system fault is eliminated and the power supply is restored, the device automatically switches back to the main power supply.

[0004] At present, in the market, common oscilloscopes are used to monitor the rapid switching devices of power supplies. Common oscilloscopes have the disadvantages of large size, heavy weight, many channels, and difficult wiring. Each test requires a lot of time for preparation, and the process is cumbersome and complicated, making it impossible to conduct monitoring tests quickly. Utility Model Content

[0005] In order to solve the problems of large volume and heavy weight in the prior art, the utility model proposes the following solutions:

[0006] A detection device based on a portable ATS recorder, the device comprising: an instrument case, a display unit and a circuit board;

[0007] The circuit board is embedded in the instrument case; the display unit is embedded in and fixed on the panel of the instrument case;

[0008] The circuit board includes: a power supply 1 management unit, a power supply 2 management unit, a power supply and power supply management unit, an analog signal acquisition unit, a digital-to-analog converter, a controller unit and a storage unit;

[0009] The analog signal acquisition unit is used to collect the voltage signal Vin1 output by the main power supply of the device under test, the voltage signal Vin2 output by the backup power supply of the device under test, the voltage signal Vout and the current signal Iout output by the device under test, and attenuate the three voltage signals and one current signal, then amplify them, and then send them to the digital-to-analog converter; it is also used to directly send the voltage signal Vin2 output by the backup power supply to the power supply 1 management unit, and directly send the voltage signal Vin1 output by the main power supply to the power supply 2 management unit;

[0010] The power supply 1 management unit is used to convert the input voltage signal Vin2 into a stepped-down standby power supply voltage signal and send it to the power supply and power supply management unit;

[0011] The power supply 2 management unit is used to convert the input voltage signal Vin1 into a stepped-down main power supply voltage signal and send it to the power supply and power supply management unit;

[0012] The power supply and power management unit is used to convert the input voltage signal into a working power signal to provide working power to the controller unit;

[0013] The digital-to-analog converter is used to convert the input four-channel analog signals into digital signals respectively, and send them to the controller unit;

[0014] The controller unit is used to generate a display output signal according to the input digital signal and send it to the display unit; and is also used to exchange data with the storage unit;

[0015] The display unit is used to display and output the received display output signal.

[0016] Further, the analog signal acquisition unit includes: a proportional amplifier and a resistor voltage divider network;

[0017] The resistor voltage divider network is used to attenuate the three input voltage signals and one current signal, and send them to the proportional amplifier;

[0018] The proportional amplifier is used to amplify the three attenuated voltage signals and the one current signal, and send them to the digital-to-analog converter.

[0019] Furthermore, the digital-to-analog converter is a 16-bit digital-to-analog converter.

[0020] Furthermore, the detection device also includes a USB power supply circuit and a USB interface;

[0021] The USB interface is used to receive low-voltage direct current and input it to the USB power supply circuit;

[0022] The USB power supply circuit is used to convert the input low-voltage direct current into a working power supply to provide working power to the circuit board.

[0023] Furthermore, the detection device also includes a keyboard, and the keyboard outputs key signals to the controller unit.

[0024] Further, the detection device further comprises: a voltage Vin1 input terminal, a voltage Vin2 input terminal, a voltage Vout input terminal and a current Iout input terminal;

[0025] The voltage Vin1 input terminal, the voltage Vin2 input terminal, the voltage Vout input terminal and the current Iout input terminal are all embedded in and fixed on the panel of the instrument chassis;

[0026] The voltage Vin1 input terminal outputs a voltage signal Vin1 to the analog signal acquisition unit;

[0027] The voltage Vin2 input terminal outputs a voltage signal Vin2 to the analog signal acquisition unit;

[0028] The voltage Vout input terminal outputs a voltage signal Vout to the analog signal acquisition unit;

[0029] The current Iout input terminal outputs a current signal Iout to the analog signal acquisition unit.

[0030] Furthermore, the detection device also includes a power switch;

[0031] The power switch is connected in series between a voltage Vin1 input terminal, a voltage Vin2 input terminal, a voltage Vout input terminal, a current Iout input terminal and the analog signal acquisition unit.

[0032] Furthermore, the detection device also includes two fuse elements, and the two fuse elements are connected in series between the analog signal acquisition unit and the power switch.

[0033] Furthermore, the detection device also includes two fuse installation components, which are respectively embedded in and fixed on the panels of the instrument chassis, and a fuse element is embedded in each of the fuse installation components.

[0034] Further, the detection device also includes a communication interface and an RS-485 communication circuit;

[0035] The RS-485 communication circuit is used to receive the communication signal sent by the controller unit, convert the communication signal into an RS-485 differential signal, and then send the RS-485 differential signal to the communication interface;

[0036] The communication interface is fixed on the panel of the instrument chassis.

[0037] The device under test is an existing ATS (Automatic Transfer Switch) power supply fast switching device.

[0038] Beneficial effects: The utility model can integrate the acquisition power supply switching with data detection, and can test and analyze the equipment under test without an external power supply. It has a small size and light weight, and does not need to connect to mutual inductors such as PT, making it convenient and flexible in on-site testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The electrical schematic diagram of the detection device based on the portable ATS recorder described in the first embodiment when detecting the device under test;

[0040] Figure 2 is a schematic diagram of the control panel described in Embodiment 6;

[0041] In the figure, voltage signal fuse 1, voltage signal 1 input terminal 2, voltage signal 2 input terminal 3, current signal input terminal 4, display unit 5, power switch 6, output power input terminal 7, keyboard 8, USB interface 9 and communication interface 10;

[0042] Figure 3 This is a waveform record of an analog quantity obtained by detection according to the first implementation mode. DETAILED DESCRIPTION

[0043] Implementation method 1: See Figure 1 The present embodiment is described as follows: a detection device based on a portable ATS recorder, the device comprising:

[0044] Instrument chassis, display unit 5 and circuit board;

[0045] The circuit board is embedded in the instrument case; the display unit 5 is embedded in and fixed on the panel of the instrument case;

[0046] The circuit board includes: a power supply 1 management unit, a power supply 2 management unit, a power supply and power supply management unit, an analog signal acquisition unit, a digital-to-analog converter, a controller unit and a storage unit;

[0047] The analog signal acquisition unit is used to collect the voltage signal Vin1 output by the main power supply of the device under test, the voltage signal Vin2 output by the backup power supply of the device under test, the voltage signal Vout and the current signal Iout output by the device under test, and attenuate the three voltage signals and one current signal, then amplify them, and then send them to the digital-to-analog converter; it is also used to directly send the voltage signal Vin2 output by the backup power supply to the power supply 1 management unit, and directly send the voltage signal Vin1 output by the main power supply to the power supply 2 management unit;

[0048] The power supply 1 management unit is used to convert the input voltage signal Vin2 into a stepped-down standby power supply voltage signal and send it to the power supply and power supply management unit;

[0049] The power supply 2 management unit is used to convert the input voltage signal Vin1 into a stepped-down main power supply voltage signal and send it to the power supply and power supply management unit;

[0050] The power supply and power management unit is used to convert the input voltage signal into a working power signal to provide working power to the controller unit;

[0051] The digital-to-analog converter is used to convert the input four-channel analog signals into digital signals respectively, and send them to the controller unit;

[0052] The controller unit is used to generate a display output signal according to the input digital signal and send it to the display unit; and is also used to exchange data with the storage unit;

[0053] The display unit is used to display and output the received display output signal.

[0054] The detection device collects the voltage and current signals of the device under test through the analog signal acquisition unit, and after attenuation and amplification, sends them to the digital-to-analog converter to convert them into digital signals. The power supply 1 management unit and the power supply 2 management unit convert the voltage signal input by the device under test into the required power supply voltage, and the power supply and power management unit converts these signals into working power for the controller unit. The controller unit processes the digital signal and generates a display output signal, which is finally presented by the display unit, see Figure 3 As shown, the controller unit can also exchange data with the storage unit at the same time.

[0055] A computer program is embedded inside the controller unit. The computer program can be implemented by those skilled in the art based on the above content and by applying conventional technical means that they should master, and is not an innovation of the present embodiment.

[0056] Embodiment 2: This embodiment is a further limitation of the detection device based on the portable ATS recorder described in Embodiment 1. In this embodiment, the analog signal acquisition unit includes: a proportional amplifier and a resistor voltage divider network;

[0057] The resistor voltage divider network is used to attenuate the three input voltage signals and one current signal, and send them to the proportional amplifier;

[0058] The proportional amplifier is used to amplify the three attenuated voltage signals and the one current signal, and send them to the digital-to-analog converter.

[0059] Implementation method three: This implementation method further limits the detection device based on the portable ATS recorder described in implementation method one. In this implementation method, the digital-to-analog converter is a 16-bit digital-to-analog converter.

[0060] Embodiment 4: This embodiment is a further limitation of the detection device based on the portable ATS recorder described in Embodiment 1. In this embodiment, the detection device further includes a USB power supply circuit and a USB interface 9;

[0061] The USB interface 9 is used to receive low voltage direct current and input it to the USB power supply circuit;

[0062] The USB power supply circuit is used to convert the input low-voltage direct current into a working power supply to provide working power to the circuit board.

[0063] Embodiment 5: This embodiment further limits the detection device based on the portable ATS recorder described in Embodiment 1. In this embodiment, the detection device further includes a keyboard 8, and the keyboard 8 outputs key signals to the controller unit.

[0064] Implementation method 6: See Figure 2 This embodiment is a further limitation of the detection device based on the portable ATS recorder described in the first embodiment. In this embodiment, the detection device further includes: a voltage Vin1 input terminal (2), a voltage Vin2 input terminal (3), a voltage Vout input terminal (7) and a current Iout input terminal (4);

[0065] The voltage Vin1 input terminal (2), the voltage Vin2 input terminal (3), the voltage Vout input terminal (7) and the current Iout input terminal (4) are all embedded in and fixed on the panel of the instrument case;

[0066] The voltage Vin1 input terminal (2) outputs a voltage signal Vin1 to the analog signal acquisition unit;

[0067] The voltage Vin2 input terminal (3) outputs a voltage signal Vin2 to the analog signal acquisition unit;

[0068] The voltage Vout input terminal (7) outputs a voltage signal Vout to the analog signal acquisition unit;

[0069] The current Iout input terminal (4) outputs a current signal Iout to the analog signal acquisition unit.

[0070] Embodiment 7: This embodiment is a further limitation of the detection device based on the portable ATS recorder described in Embodiment 6, wherein the detection device further includes a power switch 6;

[0071] The power switch 6 is connected in series between the voltage Vin1 input terminal 2 , the voltage Vin2 input terminal 3 , the voltage Vout input terminal 7 , the current Iout input terminal 4 and the analog signal acquisition unit.

[0072] Embodiment 8: This embodiment is a further limitation of the detection device based on the portable ATS recorder described in Embodiment 7. In this embodiment, the detection device also includes two fuse elements, and the two fuse elements are connected in series between the analog signal acquisition unit and the power switch (6).

[0073] The FUSE component is used to prevent excessive voltage from entering the interior and damaging the instrument.

[0074] Implementation method nine: This implementation method is a further limitation of the detection device based on the portable ATS recorder described in implementation method eight. In this implementation method, the detection device also includes two fuse installation components 1, and the two fuse installation components 1 are respectively embedded in and fixed on the panel of the instrument chassis, and a fuse FUSE element is embedded in each fuse installation component 1.

[0075] Embodiment 10: This embodiment is a further limitation of the detection device based on the portable ATS recorder described in Embodiment 1, wherein the detection device further includes a communication interface 10 and an RS-485 communication circuit;

[0076] The RS-485 communication circuit is used to receive the communication signal sent by the controller unit, convert the communication signal into an RS-485 differential signal, and then send the RS-485 differential signal to the communication interface 10;

[0077] The communication interface 10 is fixed on the panel of the instrument case.

[0078] The host computer is connected to the detection device via RS-485 communication.

Claims

1. A detection device based on a portable ATS recorder, characterized in that: The device comprises: an instrument case, a display unit (5) and a circuit board; The circuit board is embedded in the instrument case; the display unit (5) is embedded in and fixed on the panel of the instrument case; The circuit board includes: a power supply 1 management unit, a power supply 2 management unit, a power supply and power supply management unit, an analog signal acquisition unit, a digital-to-analog converter, a controller unit and a storage unit; The analog signal acquisition unit is used to collect the voltage signal Vin1 output by the main power supply of the device under test, the voltage signal Vin2 output by the backup power supply of the device under test, the voltage signal Vout and the current signal Iout output by the device under test, and attenuate the three voltage signals and one current signal, then amplify them, and then send them to the digital-to-analog converter; it is also used to directly send the voltage signal Vin2 output by the backup power supply to the power supply 1 management unit, and directly send the voltage signal Vin1 output by the main power supply to the power supply 2 management unit; The power supply 1 management unit is used to convert the input voltage signal Vin2 into a stepped-down standby power supply voltage signal and send it to the power supply and power supply management unit; The power supply 2 management unit is used to convert the input voltage signal Vin1 into a stepped-down main power supply voltage signal and send it to the power supply and power supply management unit; The power supply and power management unit is used to convert the input voltage signal into a working power signal to provide working power to the controller unit; The digital-to-analog converter is used to convert the input four-channel analog signals into digital signals respectively, and send them to the controller unit; The controller unit is used to generate a display output signal according to the input digital signal and send it to the display unit; and is also used to exchange data with the storage unit; The display unit is used to display and output the received display output signal.

2. A detection device based on a portable ATS recorder according to claim 1, characterized in that: The analog signal acquisition unit includes: a proportional amplifier and a resistor voltage divider network; The resistor voltage divider network is used to attenuate the three input voltage signals and one current signal, and send them to the proportional amplifier; The proportional amplifier is used to amplify the three attenuated voltage signals and the one current signal, and send them to the digital-to-analog converter.

3. A detection device based on a portable ATS recorder according to claim 1, characterized in that: The digital-to-analog converter is a 16-bit digital-to-analog converter.

4. The detection device based on a portable ATS recorder according to claim 1 is characterized in that: The detection device also includes a USB power supply circuit and a USB interface (9); The USB interface (9) is used to receive low-voltage direct current and input it to the USB power supply circuit; The USB power supply circuit is used to convert the input low-voltage direct current into a working power supply to provide working power to the circuit board.

5. The detection device based on a portable ATS recorder according to claim 1 is characterized in that: The detection device also includes a keyboard (8), and the keyboard (8) outputs key signals to the controller unit.

6. The detection device based on a portable ATS recorder according to claim 1 is characterized in that: The detection device further comprises: a voltage Vin1 input terminal (2), a voltage Vin2 input terminal (3), a voltage Vout input terminal (7) and a current Iout input terminal (4); The voltage Vin1 input terminal (2), the voltage Vin2 input terminal (3), the voltage Vout input terminal (7) and the current Iout input terminal (4) are all embedded in and fixed on the panel of the instrument case; The voltage Vin1 input terminal (2) outputs a voltage signal Vin1 to the analog signal acquisition unit; The voltage Vin2 input terminal (3) outputs a voltage signal Vin2 to the analog signal acquisition unit; The voltage Vout input terminal (7) outputs a voltage signal Vout to the analog signal acquisition unit; The current Iout input terminal (4) outputs a current signal Iout to the analog signal acquisition unit.

7. A detection device based on a portable ATS recorder according to claim 6, characterized in that: The detection device also includes a power switch (6); The power switch (6) is connected in series between the voltage Vin1 input terminal (2), the voltage Vin2 input terminal (3), the voltage Vout input terminal (7), the current Iout input terminal (4) and the analog signal acquisition unit.

8. The detection device based on a portable ATS recorder according to claim 7 is characterized in that: The detection device further comprises two fuse elements, which are connected in series between the analog signal acquisition unit and the power switch (6).

9. A detection device based on a portable ATS recorder according to claim 8, characterized in that: The detection device further comprises two fuse installation components (1), the two fuse installation components (1) are respectively embedded in and fixed on the panel of the instrument chassis, and a fuse element is embedded in each fuse installation component (1).

10. The detection device based on a portable ATS recorder according to claim 1, characterized in that: The detection device also includes a communication interface (10) and an RS-485 communication circuit; The RS-485 communication circuit is used to receive the communication signal sent by the controller unit, convert the communication signal into an RS-485 differential signal, and then send the RS-485 differential signal to the communication interface (10); The communication interface (10) is fixed on the panel of the instrument case.

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