Data acquisition and fault detection device for power supply equipment

Abstract

The invention relates to a power supply equipment data acquisition and fault detection device, which is characterized by comprising a power supply communication acquisition port consisting of different types of interfaces, a group of voltage and current acquisition (measurement) modules, a main controller, a data uploading communication port, a power supply module and a mounting shell, each voltage and current acquisition (measurement) module is connected and communicated with the main controller, the power supply module supplies power to the main controller, each interface in the power supply communication acquisition port is connected and communicated with the main controller, and the main controller is connected and communicated with an Ethernet interface or a wireless WIFI interface in the data uploading communication port. According to the invention, the problem of lack of power supply equipment data acquisition and fault detection in the existing test process is solved, the power supply equipment data monitoring acquisition and fault detection of the circuit module aging work test are realized, and the informatization level and efficiency of the environment test are improved.

Description

Technical Field

[0001] The invention belongs to the field of circuit aging reliability test and relates to a terminal device for data collection and fault detection of power supply equipment. Background Art

[0002] The measurement of the electrical parameters of the power supply when the circuit module is working is of great significance for evaluating the working characteristics, stability and reliability of the circuit module. At present, when domestic laboratories conduct aging reliability steady-state life tests on various circuit modules, they generally lack dedicated data acquisition and fault detection devices for testing the voltage, current, fault and other states of the power supply of the circuit module, making it impossible to continuously monitor and effectively record the parameters of the power supply of the circuit module in real time during the entire test cycle. In the event of a fault, they cannot respond quickly, causing damage to the circuit module. Summary of the invention

[0003] The purpose of the present invention is to provide a power supply equipment data collection and fault detection device to address the problem that there is a general lack of dedicated power supply data collection and fault detection devices in current experiments.

[0004] Since the power supply device for supplying power to the circuit module of the present invention can be divided into two types: with a communication interface and without a communication interface, in order to detect the output voltage, current and faults of these two types of power supply devices, a device for power supply device data collection and fault detection is designed.

[0005] The main idea of ​​the present invention is: the detection device is equipped with Ethernet, USB2.0, RS485 and multiple communication interfaces, and can communicate with the power supply with the communication interface and realize the data collection of the power supply equipment through these communication interfaces; the detection device is equipped with a module for directly collecting voltage and current, and collects the parameters of the power supply equipment without the communication interface; the detection device can set the working and working current range of the monitoring voltage, and the fault alarm threshold; when a fault alarm occurs, there will be an alarm prompt sound, and the power supply equipment can be automatically powered off; the detection device has wired and wireless data upload communication ports, and can upload the data and fault status of the power supply equipment to the control room background in real time; the detection device can receive instructions from the control room background, cut off the power output of the power supply equipment, and power on after the fault is eliminated; the shell of the detection device is easy to install, and has a magnetic suction design, which can be conveniently and firmly adsorbed to the metal shell of the power supply.

[0006] The technical solution adopted by the present invention is as follows: A device for data collection and fault detection of power supply equipment, comprising a power supply communication collection port composed of different types of interfaces, a group of voltage and current collection (measurement) modules, a main controller, a data upload communication port, a power supply module and an installation shell. Each voltage and current collection (measurement) module is connected to the main controller for communication, the power supply module supplies power to the main controller, each interface in the power supply communication collection port is connected to the main controller for communication, and the main controller is connected to the Ethernet interface or the wireless WIFI interface in the data upload communication port for communication.

[0007] On the basis of the above technical solutions, there are the following further technical solutions: A relay is connected to the input end of each voltage and current acquisition (measurement) module; The communication acquisition port includes an Ethernet port, a USB2.0 interface, an RS485 interface and other interfaces, which are used to connect and communicate with the communication port of the same type corresponding to the power supply device to realize the reading of power supply data.

[0008] Each voltage and current acquisition module (i.e., measurement module) is used for data acquisition of power supply equipment without communication ports. The output port of the power supply is connected to the input end of the voltage and current acquisition module (voltage and current measurement module), and the power supply of the circuit module under test is connected to the output of the current acquisition module. The voltage and current measurement of the power supply can be realized. There are up to 4 voltage and current measurement modules, which can meet the number of output channels of most power supply equipment.

[0009] The relay connected to the input end of each voltage and current acquisition module can control the power on and off of the power supply of that channel, and is used to power off the circuit module under test when a fault occurs.

[0010] Data upload communication port, including Ethernet port and wireless WIFI port.

[0011] The main controller realizes the data and logic processing of the entire device, obtains the power supply equipment data from the power supply communication acquisition port (power supply equipment with communication port), obtains the power supply data from the voltage and current acquisition module (power supply equipment without communication port), controls the relay to power on and off the power supply channel connected to the voltage and current acquisition module, uploads the collected voltage and current signals and fault status to the control room background in real time, and receives instructions from the control room background to modify the alarm voltage and current thresholds, and power on and off the power supply equipment. The power supply module uses an AC to DC power supply module to provide power for the internal module circuits of the device, and the device has an AC power input port.

[0012] The housing is installed to provide a mounting structure for each module of the device. Magnets are installed on the housing to allow the device to be directly adsorbed on the metal box of the power supply for easy installation.

[0013] The beneficial effects of the present invention are: The problem of lack of power supply equipment data collection and fault detection in the existing test process is solved, the power supply equipment data monitoring and collection and fault detection in the circuit module aging work test are realized, and the information level and efficiency of environmental testing are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall principle block diagram of a power supply equipment data acquisition and fault detection device of the present invention; Figure 2 It is a connection block diagram of the use of the power supply equipment data acquisition and fault detection device of the present invention; Figure 3 It is a circuit diagram of a data acquisition and fault detection device for power supply equipment.

[0015] The present invention provides a power supply equipment data collection and fault detection device, such as Figure 1 and 2 As shown in the figure, the device consists of a power communication acquisition port, a multi-channel voltage and current acquisition module, a multi-channel relay, a main controller, a data upload communication port, a power supply module, and an installation shell. The power communication acquisition port includes an Ethernet port, a USB2.0 interface, an RS485, and a variety of interfaces, which are used to connect and communicate with the same type of communication port corresponding to the power supply device to realize the reading of power data.

[0016] The multi-channel voltage and current acquisition module is used for data acquisition of power supply equipment without communication ports. The input interface of the power supply is connected to the input of the voltage and current acquisition module, and the power supply of the circuit module under test is connected to the output of the voltage and current acquisition module, so that the voltage and current measurement of the power supply can be realized. There are up to 4 voltage and current measurement modules, which can meet the number of output channels of most power supplies. Multi-channel relays and one-channel relays can control the power on and off of one channel of power supply, which is used to power off the circuit module under test when a fault occurs. The number is the same as that of voltage and current measurement modules, with a maximum of 4 relays. The upload communication port includes an Ethernet port and a wireless WIFI port. The main controller realizes the data and logic processing of the entire device, obtains the power supply equipment data from the power supply communication acquisition port, obtains the power supply data from the voltage and current acquisition module, controls the relay for powering on and off the power supply, sends monitoring data to the backstage of the operation room, uploads the collected voltage and current signals and fault status to the backstage of the control room in real time, and receives instructions from the backstage of the control room to modify the alarm threshold, and performs operations such as powering on and off the power supply. The power supply module uses an AC to DC power supply module to provide power for the internal circuits of each module of the device. The device has an AC power input port. The outer shell provides a mounting structure for each module of the device. Magnets are installed on the shell, allowing the device to be directly attached to the metal box of the power supply for easy installation.

[0017] Embodiment 1, as Figure 3As shown: The AC to DC converter uses HLK-10M05 from Hilink, which inputs AC 220V and outputs DC 5V / 2A to provide power for the entire device.

[0018] PMIC power management uses the highly integrated power management chip AXP305 to provide power for SOC chips, eMMC chips, DDR3 chips, Ethernet transceiver chips, WIFI Bluetooth modules, etc.

[0019] eMMC uses FEMDNN008G-08A39, 8GB storage capacity, and provides FLASH storage for the SOC chip.

[0020] DDR3 uses 2 K4B4G1646E-BCMA in parallel to form a 512MB capacity to provide RAM storage for the SOC chip.

[0021] The SOC chip used is RK3568, which is a high-performance multi-core SOC chip that supports rich interfaces. In addition to the storage interface, it can also provide up to 3 USB2.0 interfaces, 2 Gigabit Ethernet interfaces, 1 SDIO interface, 4 SPI interfaces, 10 UART interfaces, and hundreds of general GPIO ports, which can fully meet the technical requirements of this device.

[0022] Both Ethernet transceiver chips use YT8531C, which is a single-port Gigabit Ethernet physical layer chip that complies with IEEE 802.3 1000Base-T, 100BaseTX, 10Base-Te, RGMII MAC interface and can be directly connected to the RGMII of the SOC chip RK3568.

[0023] The WIFI Bluetooth module uses AP6212, which is a low-power, high-performance WiFi+BT4.2 module launched by AMPAK. The module complies with the 802.11b / g / n standard. The WiFi function uses the SDIO interface and the Bluetooth uses the UART / I2S / PCM interface. This device only uses the WIFI function, so the SDIO is directly used to connect the SOC chip.

[0024] The RS485 transceiver uses ISO3082, which is a 200Kbps, half-duplex, 2.5kVrms isolated RS-485 transceiver that meets or exceeds TIA / EIA RS-485 requirements.

[0025] For power supplies without communication interfaces, it is necessary to collect voltage and current, thereby indirectly realizing power supply data collection and fault detection. The voltage and current detection of 4 channels requires a total of 8 channels of ADC. AD7608 is selected as the ADC chip. AD7608 is an 18-bit, 8-channel synchronous sampling analog-to-digital data acquisition system (DAS). The device has built-in analog input clamp protection, second-order anti-aliasing filter, sample-and-hold amplifier, 18-bit charge redistribution successive approximation analog-to-digital converter (ADC), flexible digital filter, 2.5 V reference voltage source, reference voltage buffer, and high-speed serial and parallel interface. All channels can be sampled at a throughput rate of up to 200 kSPS. AD7608 communicates with the SOC chip through the SPI interface.

[0026] Each power input uses a relay JQX-102F-P / 012 as a switch for connection and disconnection. JQX-102F-P / 012 is a power relay with a maximum conduction current of 20A and an on-resistance of 30 milliohms, which is suitable for high-current working scenarios. After the input power passes through the voltage divider resistor, the voltage obtained is input into an ADC channel of AD7608 as the power supply voltage of the channel.

[0027] After the input power is sampled by the 10 milliohm resistor, the current of the power supply can be reflected by the voltage across the resistor. The voltage difference across the resistor is amplified 50 times using the current sensing amplifier chip CSA230-50. The obtained voltage is input into an ADC channel of AD7608 as the power supply current collection of the channel.

Claims

1. A power supply equipment data acquisition and fault detection device, characterized in that It consists of a power communication acquisition port composed of different types of interfaces, a group of voltage and current acquisition modules, a main controller, a data upload communication port, a power supply module and an installation shell. Each voltage and current acquisition module is connected to the main controller for communication, the power supply module supplies power to the main controller, each interface in the power communication acquisition port is connected to the main controller for communication, and the main controller is connected to the Ethernet interface or the wireless WIFI interface in the data upload communication port for communication.

2. A power supply equipment data acquisition and fault detection device according to claim 1, characterized in that: The input end of each voltage and current acquisition module is connected to a relay, which controls the power on and off of the power supply and is used to power off the circuit module under test when a fault occurs.

3. A power supply equipment data acquisition and fault detection device according to claim 1 or 2, characterized in that: The communication acquisition port includes an Ethernet interface, a USB2.0 interface, an RS485 interface and other interfaces, which are used to connect and communicate with the communication port of the same type corresponding to the power supply device to realize the reading of power supply data.

4. A power supply equipment data acquisition and fault detection device according to claim 3, characterized in that: Each voltage and current acquisition module is used for data acquisition of power supply equipment without communication port. The output port of the power supply is connected to the input end of the voltage and current acquisition module, and the power supply of the circuit module under test is connected to the output of the current acquisition module to realize the voltage and current measurement of the power supply.

5. A power supply equipment data acquisition and fault detection device according to claim 4, characterized in that: Data upload communication port, including Ethernet port and wireless WIFI port.

6. A power supply equipment data acquisition and fault detection device according to claim 4, characterized in that: The main controller realizes the data and logic processing of the entire device, obtains the power supply equipment data from the power supply communication acquisition port, or obtains the power supply data from the voltage and current acquisition module, controls the relay to power on and off the power supply channel connected to the voltage and current acquisition module, uploads the collected voltage and current signals and fault status to the control room background in real time, and receives instructions from the control room background to modify the alarm voltage and current thresholds, and power on and off the power supply equipment.

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