TFDS laser power rapid display device

Abstract

The utility model relates to a TFDS laser light source emission power detection device, and specifically relates to a TFDS laser power rapid display device comprising a housing, a circuit board, a thermopile sensor, an OLED display screen, a function and power supply button module and a battery, the circuit board is provided with a master control MCU, an electric quantity and power supply conversion module, a charging and data serial port module and an EEPROM module, the OLED display screen and the function and power key module are fixedly installed on the shell, the thermopile sensor and the battery are fixedly installed in the shell, and the thermopile sensor, the OLED display screen, the function and power key module, the charging and data serial port module and the EEPROM module are connected with the main control MCU; an optical fiber head is fixed on the shell; and the thermopile sensor is contacted with the optical fiber head. The device is used for detecting the transmitting power of a laser light source, can be used for detecting in dynamic monitoring workshops, teams and TFDS detection stations, and can improve the detection coverage range of a TFDS system.

Description

Technical Field

[0001] This utility model relates to a TFDS laser source emission power detection device, specifically a TFDS laser power rapid display device. Background Technology

[0002] TFDS is short for Railway Freight Car Fault Trackside Image Detection System. Its main function is to perform dynamic image detection of the status of running freight cars, promptly detect faults in critical parts of the vehicles, prevent freight train accidents, and ensure railway transportation safety. The TFDS system requires the acquisition of graphic information of freight cars, which uses detection cameras. The TFDS laser light source is the light-emitting component of the detection camera, and it directly affects the operational safety and efficiency of freight trains.

[0003] Currently, there is no equipment to test the emission power of TFDS laser sources. TFDS laser sources are generally returned to the factory for maintenance on a regular basis, and it is only after maintenance that insufficient emission power of TFDS laser sources may be discovered. Therefore, there is an urgent need for equipment that can test the emission power of TFDS laser sources on-site. Summary of the Invention

[0004] To address the problem that the emission power of TFDS laser sources cannot be measured on-site, this invention provides a TFDS laser power rapid display device.

[0005] This utility model is achieved using the following technical solution: a TFDS laser power rapid display device, comprising a housing, a circuit board, a thermopile sensor, an OLED display screen, a function and power button module, and a battery. The circuit board is equipped with a main control MCU, a power and energy conversion module, a charging and data serial port module, and an EEPROM module. The OLED display screen and the function and power button module are mounted and fixed on the housing. The thermopile sensor and the battery are fixedly installed inside the housing. The thermopile sensor, the OLED display screen, the function and power button module, the charging and data serial port module, and the EEPROM module are connected to the main control MCU. The battery and the power and energy conversion module supply power to the entire device. An optical fiber head is fixed on the housing, and the hot end of the thermopile sensor is in contact with the optical fiber head.

[0006] The TFDS laser source under test is connected to the fiber optic connector via an optical fiber. The laser emitted by the TFDS laser source is transmitted to the fiber optic connector and generates heat at the fiber optic connector. The thermopile sensor transmits the measured temperature at the fiber optic connector to the main control MCU. The main control MCU converts the temperature into power to complete the measurement of laser power.

[0007] The aforementioned TFDS laser power rapid display device also includes a thermocouple sensor. The thermocouple sensor is fixed inside the housing and connected to the main control MCU. The cold junction of the thermopile sensor is in contact with the thermocouple sensor. The thermocouple sensor is used to measure the temperature of the cold junction of the thermopile sensor for temperature compensation.

[0008] The thermocouple sensor transmits the measured temperature of the cold junction of the thermopile sensor to the main control MCU. The main control MCU compares the values ​​measured by the thermopile sensor and the thermocouple sensor, and then converts the temperature difference into power.

[0009] In the aforementioned TFDS laser power rapid display device, the thermopile sensor is installed inside the housing using thermally conductive silicone grease, which can dissipate heat in time and prevent the thermopile sensor from overheating.

[0010] The aforementioned TFDS laser power display device uses double-sided tape to fix the battery to the circuit board, and a layer of foam is added between the battery and the outer casing to ensure that the battery does not move after the device is dropped from a height of 1 meter.

[0011] The aforementioned TFDS laser power display device also has silicone pads at the corners of the back of the outer casing.

[0012] The TFDS laser power rapid display device is mainly used for detecting the emission power of TFDS laser sources. It can be used in dynamic monitoring workshops, work teams, and TFDS detection stations. It can improve the detection coverage of the TFDS system and prevent failures in advance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 Side view.

[0015] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 1 .

[0016] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 2 .

[0017] Figure 5 This is a schematic diagram of the back of this utility model.

[0018] Figure 6 This is a top view of the present invention.

[0019] Figure 7 This is a circuit structure block diagram of the present invention.

[0020] Figure 8This is a hardware design structure diagram of this utility model.

[0021] In the diagram: 1-Outer casing, 2-Circuit board, 3-Function and power button module, 4-OLED display, 5-Battery, 6-Fiber optic connector, 7-Silicone pad. Detailed Implementation

[0022] The TFDS laser power rapid display device is mainly used for detecting the emission power of TFDS laser sources. It also meets the requirements for low-temperature environment testing, improves the detection coverage of the TFDS system, and helps prevent failures in advance.

[0023] The TFDS laser power rapid display device includes a housing 1, a circuit board 2, a thermopile sensor, a thermocouple sensor, an OLED display 4, a function and power button module 3, and a battery 5. The circuit board 2 is equipped with a main control MCU, a power and data conversion module, a charging and data serial port module, and an EEPROM module. The OLED display 4 and the function and power button module 3 are mounted and fixed on the housing 1. The thermopile sensor, thermocouple sensor, and battery 5 are fixedly installed inside the housing 1. The charging and data serial port module and EEPROM module are connected to the main control MCU. Battery 5, power and power conversion module power the entire device. An SMA905 fiber optic connector 6 is fixed on the outer shell 1. The hot end of the thermopile sensor contacts the fiber optic connector 6, and the cold end of the thermopile sensor contacts the thermocouple sensor. The thermopile sensor is installed inside the outer shell 1 using thermally conductive silicone grease, which can dissipate heat in time and prevent the thermopile sensor from overheating. Battery 5 is fixed to the circuit board 2 with double-sided tape. A layer of foam is added between battery 5 and outer shell 1 to ensure that battery 5 does not move after the device is dropped from a height of 1 meter.

[0024] Power and energy conversion module: Its main function is to convert battery voltage into the operating power of the device.

[0025] Data serial port module: Its main function is to communicate with a computer, and it can realize functions such as device data calibration and program self-upgrade.

[0026] Function and power button module: The main functions implemented are selection and power on / off.

[0027] Thermopile sensor: mainly used for laser temperature acquisition.

[0028] Thermocouple sensor: mainly used for compensated temperature acquisition.

[0029] EEPROM module: mainly implements configuration data and measurement data storage.

[0030] Main control MCU: mainly responsible for the processing and calculation of each module.

[0031] OLED display: mainly used to display measurement data, power level, and other configuration items.

[0032] Specifically, the thermopile sensor is connected to the main control MCU's SPI interface via an amplifier circuit, an ADC acquisition circuit, and the MCU's SPI interface. The NST1001 thermocouple sensor is connected to the MCU's GPIO interface. The function and power button module is connected to the MCU's GPIO interface. The OLED display is connected to the MCU's SPI interface. Battery 5 is a 4.2V lithium battery. The power and conversion module includes a fuel gauge, an LDO voltage regulator chip, and a DC-DC converter. The lithium battery is connected to the MCU's I2C interface via the fuel gauge, and also to the MCU's RTC and VCC interfaces via the LDO voltage regulator chip. The GPIO interface of the main control MCU is connected to the DC-DC converter, which in turn is connected to the OLED display to power the OLED display. The charging and data serial port module includes an SWD interface, a UART debugging interface, a USB interface, and a charging chip. The SWD interface and UART debugging interface are connected to the SWD interface and UART interface of the main control MCU, respectively, for program writing and upgrading, debugging and calibration. The USB interface is connected to the charging chip, which is connected to the lithium battery. The USB interface is also connected to the UART interface of the main control MCU. The charging chip is connected to the GPIO interface. An external charger can be connected to the USB interface to charge the lithium battery.

[0033] In use, the TFDS laser source to be tested is connected to fiber optic connector 6 via an optical fiber. After the device is powered on, testing begins. The TFDS laser source emits laser light, which is transmitted to fiber optic connector 6 and generates heat there. The thermopile sensor transmits the measured temperature at the fiber optic connector to the main control MCU, while the thermocouple sensor transmits the measured temperature of the cold junction of the thermopile sensor to the main control MCU. The main control MCU compares the values ​​measured by the thermopile sensor and the thermocouple sensor, then converts the temperature difference into power to measure the laser power. The thermocouple sensor measures the temperature of the cold junction of the thermopile sensor for temperature compensation, improving the measurement accuracy of the device across the entire operating temperature range. The relationship between the power and temperature of the laser source can be expressed by the well-known and commonly used formula: P = kT n In this formula, P represents the power of the laser source, T represents the temperature, and k and n are constants. The power of the laser source is calculated from the temperature generated by the laser irradiating the fiber optic head. This formula is pre-written into the main control MCU.

Claims

1. A TFDS laser power rapid display device, characterized in that: The device includes a housing (1), a circuit board (2), a thermopile sensor, an OLED display (4), a function and power button module (3), and a battery (5). The circuit board (2) is equipped with a main control MCU, a power and energy conversion module, a charging and data serial port module, and an EEPROM module. The OLED display (4) and the function and power button module (3) are mounted and fixed on the housing (1). The thermopile sensor and the battery (5) are fixedly installed inside the housing (1). The thermopile sensor, the OLED display (4), the function and power button module (3), the charging and data serial port module, and the EEPROM module are connected to the main control MCU. The battery (5) and the power and energy conversion module provide power to the entire device. An optical fiber head (6) is fixed on the housing (1). The hot end of the thermopile sensor is in contact with the optical fiber head (6).

2. The TFDS laser power rapid display device according to claim 1, characterized in that: It also includes a thermocouple sensor, which is fixed inside the housing (1). The thermocouple sensor is connected to the main control MCU, and the cold end of the thermopile sensor is in contact with the thermocouple sensor.

3. The TFDS laser power rapid display device according to claim 1 or 2, characterized in that: The thermopile sensor is mounted inside the housing (1) using thermally conductive silicone grease.

4. The TFDS laser power rapid display device according to claim 1 or 2, characterized in that: The battery (5) is fixed to the circuit board (2) with double-sided tape, and a layer of foam is added between the battery (5) and the casing (1).

5. The TFDS laser power rapid display device according to claim 1 or 2, characterized in that: Silicone pads (7) are also provided at the corners of the back of the outer casing (1).

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