CN202631620U - Optical module intelligent test board - Google Patents

Abstract

The utility model discloses an optical module intelligent test board, including the board end and electronic module, electronic module inlays on the board end, and this electronic module includes MCU (micro Controller Unit), DDM (digital monitoring) monitoring module, current monitoring module, adjustable supply voltage module and module parameter regulating block, and DDM monitoring module, current monitoring module, adjustable supply voltage module and module parameter regulating block are connected with MCU respectively. The utility model discloses construct such a structure, simplify the required module of test, convenient to use, easy operation has realized functions such as real-time regulation voltage size, real time monitoring, high-speed signal transmission.

Description

Translated fromChinese

一种光模块智能测试板An optical module intelligent test board

技术领域technical field

本实用新型设计涉及数字模块测试领域，具体涉及一种光模块智能测试板。The design of the utility model relates to the field of digital module testing, in particular to an optical module intelligent testing board.

背景技术Background technique

现有的光通信用数字模块测试板，在测试过程中，需要过多的辅助设备，而且很多参数不能很方便的改变和检测，如输入模块的电压和模块的电流。这样给我们测试带来了很大的不便，使测试变得繁琐和耗时。Existing digital module test boards for optical communication require too much auxiliary equipment during the test process, and many parameters cannot be easily changed and detected, such as the voltage of the input module and the current of the module. This brings great inconvenience to our test, making the test cumbersome and time-consuming.

实用新型内容Utility model content

本实用新型的目的在于：为了解决上述现有技术的问题，提供一种简化测试所需模块的，使用方便，操作简单的光模块智能测试板。The purpose of this utility model is: in order to solve the above-mentioned problems in the prior art, provide an optical module intelligent test board which simplifies the modules required for testing, is easy to use and easy to operate.

为了实现上述目的，本实用新型的技术方案为：In order to achieve the above object, the technical solution of the utility model is:

一种光模块智能测试板，包括板底和电子模块，电子模块镶嵌在板底上，该电子模块包括MCU(Micro Controller Unit)微控制器、DDM(Digital Diagnostic Monitoring)监控模块、电流监控模块、可调供电电压模块及模块参数调节块，DDM监控模块、电流监控模块、可调供电电压模块及模块参数调节块分别通过传输线与MCU微控制器连接。本实用新型实现了实时调节电压大小、实时监控、高速信号传输等功能；可以方便快捷的对测试模块进行监控，并且可直接监控出电流。包括PON模块、SFP模块等数字模块的测试都可以使用此测试板。它所使用的外部设备大大减少，并且可以直接监控电流、在线改变供电电压以及实时监控模块的状态。大大加快了测试速度以及测试精度。An optical module intelligent test board comprises a board bottom and an electronic module, the electronic module is embedded on the board bottom, and the electronic module includes an MCU (Micro Controller Unit) microcontroller, a DDM (Digital Diagnostic Monitoring) monitoring module, a current monitoring module, The adjustable supply voltage module and the module parameter adjustment block, the DDM monitoring module, the current monitoring module, the adjustable supply voltage module and the module parameter adjustment block are respectively connected to the MCU microcontroller through the transmission line. The utility model realizes the functions of real-time voltage adjustment, real-time monitoring, high-speed signal transmission, etc.; the test module can be monitored conveniently and quickly, and the current can be directly monitored. This test board can be used for testing digital modules such as PON modules and SFP modules. The external equipment it uses is greatly reduced, and it can directly monitor the current, change the supply voltage online and monitor the status of the module in real time. Greatly speed up the test speed and test accuracy.

作为本实用新型的进一步改进，MCU微控制器通过I2C(Inter-Integrated Circuit)总线与测试模块通信。利用I2C总线进行通信，实现远程监控。As a further improvement of the utility model, the MCU microcontroller communicates with the test module through the I2C (Inter-Integrated Circuit) bus. Use the I2C bus to communicate and realize remote monitoring.

作为本实用新型的进一步改进，MCU微控制器通过USB连接线与上位机进行通信，实现远程监控进行测试模块与测试板进行通信。MCU微控制器与上位机进行通信，使上位机更好的控制调节MCU微控制器。As a further improvement of the utility model, the MCU micro-controller communicates with the upper computer through the USB connection line, realizes remote monitoring and the test module communicates with the test board. The MCU microcontroller communicates with the host computer, so that the host computer can better control and adjust the MCU microcontroller.

作为本实用新型的进一步改进，DDM监控模块包括多个监控LED指示，包括电源、数据、突发、TX_SD、LOS、TX_Fault监测指示灯。利用各个监测指示灯，更好的及时调控各元件，使其工作在正常范围内。As a further improvement of the utility model, the DDM monitoring module includes a plurality of monitoring LED indications, including power supply, data, burst, TX_SD, LOS, and TX_Fault monitoring indicator lights. Use each monitoring indicator light to better control each component in time to make it work within the normal range.

作为本实用新型的进一步改进，该电流监控模块由检测电阻、采样电阻、电容及ADC(模数变换器)构成。As a further improvement of the utility model, the current monitoring module is composed of a detection resistor, a sampling resistor, a capacitor and an ADC (Analog-to-Digital Converter).

作为本实用新型的进一步改进，该可调供电电压模块由LDO(low dropout regulator)低压差线性稳压器、采样电阻及AD构成。可以通过对MCU微控制器进行控制从而实现对供电电压的调节，MCU微控制器通过对电阻两端进行采样，从而计算出模块电流大小。As a further improvement of the utility model, the adjustable supply voltage module is composed of an LDO (low dropout regulator) low dropout linear voltage regulator, a sampling resistor and an AD. The power supply voltage can be adjusted by controlling the MCU microcontroller, and the MCU microcontroller can calculate the module current by sampling both ends of the resistor.

本实用新型的有益效果在于：本实用新型构造这样的一种结构，简化测试所需模块的，使用的外部设备大大减少，使用方便，可以方便快捷的对测试模块进行监控，并且可直接监控出电流，操作简单，实现了实时调节电压大小、实时监控、高速信号传输等功能，大大加快了测试速度以及测试精度。The beneficial effects of the utility model are: the utility model has such a structure, which simplifies the modules required for the test, greatly reduces the external equipment used, is convenient to use, can monitor the test modules conveniently and quickly, and can directly monitor the Current, easy to operate, realize real-time voltage adjustment, real-time monitoring, high-speed signal transmission and other functions, greatly speeding up the test speed and test accuracy.

附图说明Description of drawings

图1为本实用新型的工作原理示意图。Fig. 1 is a schematic diagram of the working principle of the utility model.

图2为本实用新型的电流监控模块电流第一种监控方式示意图。FIG. 2 is a schematic diagram of the first monitoring mode of the current monitoring module of the present invention.

图3为本实用新型的电流监控模块电流第二种监控方式示意图。FIG. 3 is a schematic diagram of the second monitoring mode of the current monitoring module of the present invention.

图4为本实用新型的可调供电电压模块第一种调压方式示意图.Fig. 4 is a schematic diagram of the first voltage regulation mode of the adjustable power supply voltage module of the present invention.

图5为本实用新型的可调供电电压模块第二种调压方式示意图。FIG. 5 is a schematic diagram of the second voltage regulation mode of the adjustable power supply voltage module of the present invention.

图6为本实用新型的可调供电电压模块第三种调压方式示意图。FIG. 6 is a schematic diagram of the third voltage regulation mode of the adjustable power supply voltage module of the present invention.

具体实施方式Detailed ways

参照图1所示，一种光模块智能测试板，包括板底1和电子模块2，电子模块2镶嵌在板底1上，该电子模块2包括MCU(MicroController Unit)微控制器21、DDM(Digital Diagnostic Monitoring)监控模块22、电流监控模块23、可调供电电压模块24及模块参数调节块25，DDM监控模块22、电流监控模块23、可调供电电压模块24及模块参数调节块25分别通过传输线与MCU微控制器21连接。本实用新型实现了实时调节电压大小、实时监控、高速信号传输等功能；可以方便快捷的对测试模块进行监控，并且可直接监控出电流。包括PON模块、SFP模块等数字模块的测试都可以使用此测试板。它所使用的外部设备大大减少，并且可以直接监控电流、在线改变供电电压以及实时监控模块的状态。大大加快了测试速度以及测试精度。With reference to shown in Fig. 1, a kind of optical module intelligent test board comprisesboard bottom 1 and electronic module 2, and electronic module 2 is embedded on theboard bottom 1, and this electronic module 2 comprises MCU (MicroController Unit)microcontroller 21, DDM ( Digital Diagnostic Monitoring)monitoring module 22,current monitoring module 23, adjustable powersupply voltage module 24 and moduleparameter adjustment block 25,DDM monitoring module 22,current monitoring module 23, adjustable powersupply voltage module 24 and moduleparameter adjustment block 25 respectively pass The transmission line is connected with theMCU microcontroller 21 . The utility model realizes the functions of real-time voltage adjustment, real-time monitoring, high-speed signal transmission, etc.; the test module can be monitored conveniently and quickly, and the current can be directly monitored. This test board can be used for testing digital modules such as PON modules and SFP modules. The external equipment it uses is greatly reduced, and it can directly monitor the current, change the supply voltage online and monitor the status of the module in real time. Greatly speed up the test speed and test accuracy.

MCU微控制器21通过I2C(Inter-Integrated Circuit)总线31与测试模块5通信。利用I2C总线31进行通信，实现远程监控。MCU microcontroller 21 communicates withtest module 5 through I2C (Inter-Integrated Circuit)bus 31. TheI2C bus 31 is used for communication to realize remote monitoring.

MCU微控制器21通过USB连接线32与上位机4进行通信，实现远程监控进行测试模块5与测试板进行通信。MCU微控制器21与上位机4进行通信，使上位机4更好的控制调节MCU微控制器21。TheMCU microcontroller 21 communicates with thehost computer 4 through theUSB connection line 32 to realize remote monitoring and thetest module 5 communicates with the test board. TheMCU microcontroller 21 communicates with thehost computer 4, so that thehost computer 4 can better control and adjust theMCU microcontroller 21.

DDM监控模块22包括多个监控LED指示，包括电源、数据、突发、TX_SD、LOS、TX_Fault监测指示灯。利用各个监测指示灯，更好的及时调控各元件，使其工作在正常范围内。TheDDM monitoring module 22 includes multiple monitoring LED indicators, including power, data, burst, TX_SD, LOS, and TX_Fault monitoring indicators. Use each monitoring indicator light to better control each component in time to make it work within the normal range.

该电流监控模块23由检测电阻、采样电阻、电容及ADC(模数变换器)构成。Thecurrent monitoring module 23 is composed of a detection resistor, a sampling resistor, a capacitor and an ADC (analog-to-digital converter).

该可调供电电压模块24由LDO(low dropout regulator)低压差线性稳压器、采样电阻及AD构成。可以通过对MCU微控制器21进行控制从而实现对供电电压的调节，MCU微控制器21通过对电阻两端进行采样，从而计算出模块电流大小。The adjustablesupply voltage module 24 is composed of LDO (low dropout regulator) low dropout linear regulator, sampling resistor and AD. The adjustment of the power supply voltage can be realized by controlling theMCU microcontroller 21 , and theMCU microcontroller 21 calculates the magnitude of the module current by sampling both ends of the resistor.

采用了电阻采样电压的方法，计算出流经测试板的电流，进而计算出测试模块5的电流；采用可调电源芯片以及MCU微控制器21控制，使供给测试模块5的电压可以进行电压调节。并且使测试模块5供电电压更加稳定、精确。The method of sampling voltage by resistance is used to calculate the current flowing through the test board, and then calculate the current of thetest module 5; the adjustable power supply chip and theMCU microcontroller 21 are used to control the voltage supplied to thetest module 5 to be able to adjust the voltage . And the power supply voltage of thetest module 5 is more stable and accurate.

电流监控模块23的电流监控方式如下：The current monitoring mode of thecurrent monitoring module 23 is as follows:

参照图2所示，通过R1、R2、R3并联来获得所需要的阻值，再通过ADC_CRT+、ADC_CRT-进行电压采样，假设R4＝R5；R6＝R7，可计算出测试模块5电流值为：(R4+R6)*(VADC_CRT+-VADC_CRT-)/[(R1//R2//R3)*R6]，通过此公式可以算出测试模块5电流值；参照图3所示，测试模块5电流经过R1产生压差，电压差经过运放进行放大，再经过镜像电流源按一定比例进行镜像，进而产生相应的电压，最后经过MCU微控制器21计算出测试模块5电流值。Referring to Figure 2, the required resistance value is obtained by connecting R1, R2, and R3 in parallel, and then voltage sampling is performed through ADC_CRT+, ADC_CRT-, assuming R4=R5; R6=R7, the current value of thetest module 5 can be calculated as: (R4+R6)*(VADC_CRT+-VADC_CRT-)/[(R1//R2//R3)*R6], the current value of thetest module 5 can be calculated through this formula; as shown in Figure 3, the current of thetest module 5 passes through R1 A voltage difference is generated, and the voltage difference is amplified by the operational amplifier, and then mirrored by a certain ratio through the mirror current source to generate a corresponding voltage, and finally the current value of thetest module 5 is calculated by theMCU microcontroller 21 .

可调供电电压模块24的电压调节方式如下：The voltage regulation mode of the adjustablesupply voltage module 24 is as follows:

参照图4所示，MCU微控制器21通过对VCTRL1、VCTRL2、VCTRL3、VCTRL4四个端口进行控制，以此来改变ADJ到地的电阻值，进而可以调节输出电压值；参照图5所示，通过MCU微控制器21改变DA电压值来调节输出电压值；参照图6所示，通过对R1、R2电阻值调节来改变ADJ的电压值，进而可以调节输出电压值。Referring to FIG. 4, theMCU microcontroller 21 controls the four ports VCTRL1, VCTRL2, VCTRL3, and VCTRL4 to change the resistance value from ADJ to ground, thereby adjusting the output voltage value; as shown in FIG. 5, The output voltage value is adjusted by changing the DA voltage value through theMCU microcontroller 21; as shown in FIG. 6, the ADJ voltage value is changed by adjusting the resistance values of R1 and R2, thereby adjusting the output voltage value.

Claims (6)

1. optical module intelligence test plate; Comprise at the bottom of the plate and electronic module; On electronic module is embedded at the bottom of the plate; It is characterized in that: described electronic module comprises MCU (Micro Controller Unit) microcontroller, DDM (Digital Diagnostic Monitoring) monitoring module, current monitoring module, variable supply voltage module and module parameter regulating block, and DDM monitoring module, current monitoring module, variable supply voltage module and module parameter regulating block are connected with MCU (Micro Controller Unit) microcontroller through transmission line respectively.

2. optical module intelligence test plate according to claim 1 is characterized in that: the MCU microcontroller is communicated by letter with test module through I2C (Inter-Integrated Circuit) bus.

3. optical module intelligence test plate according to claim 1, it is characterized in that: MCU communicates through USB connecting line and host computer, realizes that test module is carried out in remote monitoring and test board communicates.

4. optical module intelligence test plate according to claim 1 is characterized in that: the DDM monitoring module comprises a plurality of monitoring LED indications, comprises that power supply, data, burst, TX_SD, LOS, TX_Fault monitor pilot lamp.

5. optical module intelligence test plate according to claim 1 is characterized in that: described current monitoring module constitutes by detecting resistance, sampling resistor, electric capacity and ADC (A-D converter).

6. optical module intelligence test plate according to claim 1 is characterized in that: described variable supply voltage module is made up of LDO (low dropout regulator) low pressure difference linear voltage regulator, sampling resistor and AD.

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