WO2018058823A1 - 故障检测装置及方法 - Google Patents

故障检测装置及方法 Download PDF

Info

Publication number
WO2018058823A1
WO2018058823A1 PCT/CN2016/112474 CN2016112474W WO2018058823A1 WO 2018058823 A1 WO2018058823 A1 WO 2018058823A1 CN 2016112474 W CN2016112474 W CN 2016112474W WO 2018058823 A1 WO2018058823 A1 WO 2018058823A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
signal
counting
capacitor
converter
Prior art date
Application number
PCT/CN2016/112474
Other languages
English (en)
French (fr)
Inventor
舒相成
Original Assignee
深圳Tcl数字技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳Tcl数字技术有限公司 filed Critical 深圳Tcl数字技术有限公司
Publication of WO2018058823A1 publication Critical patent/WO2018058823A1/zh

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Definitions

  • the present invention relates to the field of electronic product testing technologies, and in particular, to a fault detecting apparatus and method.
  • a primary object of the present invention is to provide a fault detecting apparatus and method for facilitating testing of electronic equipment by a tester.
  • the present invention provides a fault detecting apparatus comprising:
  • the light detecting module is configured to detect an optical signal output by the standby indicator of the electronic device to be tested, and convert the optical signal output by the standby indicator into a corresponding voltage when detecting the optical signal output by the standby indicator Output after signal;
  • a signal conversion module configured to convert the voltage signal into a digital level signal
  • a counting module configured to receive the digital level signal, and count the number of times the received digital level signal is received
  • a display module is configured to display the value counted by the counting module.
  • a signal feedback end of the light detecting module is connected to a signal input end of the signal conversion module, a signal output end of the signal conversion module is connected to an input end of the counting module, and an output end of the counting module Connected to the controlled end of the display module.
  • the light detecting module comprises an ambient light sensor, the ambient light sensor has a power end, a ground end and an output end, and the power input end of the ambient light sensor is connected to a first power supply, the ambient light sensor The grounding end is grounded, and the output end of the ambient light sensor is a signal feedback end of the light detecting module.
  • the ambient light sensor is converted into a different analog voltage of 0-3.3 V according to the received ambient light intensity, and is output.
  • the signal conversion module is an A/D converter
  • an A/D conversion pin of the A/D converter is connected to a signal feedback end of the light detection module, and a signal output of the A/D converter The terminal is connected to the input end of the counting module.
  • the counting frequency of the counting module is the same as the sampling frequency of the light detecting module.
  • the counting module is a counter.
  • the display module comprises a plurality of digital display tubes, and the plurality of digital display tubes are arranged side by side for displaying the counting result of the counting module.
  • the display module comprises an LCD display.
  • the display module comprises an LED display module.
  • the fault detecting device further includes a reset circuit
  • the reset circuit includes a first resistor and a first capacitor; a first end of the first capacitor and a power pin VDD and a second of the A/D converter The power supply is connected, and the second end of the first capacitor is connected to the first end of the first resistor and the reset leg of the A/D converter to ground the second end of the first resistor.
  • the fault detecting device further includes a crystal oscillator module, the crystal oscillator module includes a second capacitor, a third capacitor, and a crystal oscillator, the first end of the crystal oscillator and the first end of the second capacitor and the A/ a first pin of the D converter is interconnected, a second end of the crystal oscillator is interconnected with a first end of the third capacitor and a second pin of the A/D converter, the second capacitor The second end and the second end of the third capacitor are both grounded.
  • the crystal oscillator module includes a second capacitor, a third capacitor, and a crystal oscillator, the first end of the crystal oscillator and the first end of the second capacitor and the A/ a first pin of the D converter is interconnected, a second end of the crystal oscillator is interconnected with a first end of the third capacitor and a second pin of the A/D converter, the second capacitor The second end and the second end of the third capacitor are both grounded.
  • the invention also provides a fault detection method, the fault detection method comprising the following steps:
  • the counted value is displayed.
  • the invention detects the standby indicator of the electronic device through the optical signal detection module, converts the optical signal into a voltage signal, outputs the signal to the signal conversion module for signal conversion, and outputs the signal to the counting module, so that the counting module obtains the
  • the digital level is started, the value counted by the counting module is displayed through the display module, so that when the indicator to be tested is illuminated once, the fault detecting device counts once, and it can be known whether the electronic device has been restarted, and
  • the standby indication of the electronic device indicates whether an abnormality or the like occurs, which is very convenient; and the present invention replaces the manual detection with a simple fault detecting device, thereby realizing reliable testing of the electronic device in an extreme environment, thereby saving labor costs and improving the pair.
  • the efficiency of electronic equipment fault detection is very convenient.
  • FIG. 1 is a schematic diagram of functional modules of a preferred embodiment of a fault detecting apparatus of the present invention
  • FIG. 2 is a schematic diagram showing the circuit structure of the fault detecting device shown in FIG. 1;
  • FIG. 3 is a schematic diagram showing the circuit structure of the A/D converter and the digital display tube of FIG. 2;
  • FIG. 4 is a schematic flow chart of a preferred embodiment of a fault detection method according to the present invention.
  • Label name Label name 10
  • Light detection module 11
  • Ambient light sensor 20
  • Signal conversion module R1 First resistance
  • Counting module C1
  • First capacitor 40
  • Display module C2 Second capacitor 50
  • Reset circuit C3
  • Crystal module IC1 A/D converter
  • VCC1 First power supply XTAL1 First pin VCC2 Second power supply XTAL2 Second pin
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the present invention provides a fault detecting device suitable for use in an electronic device having a standby indicator light.
  • the fault detecting device includes a light detecting module 10 , a signal converting module 20 , a counting module 30 , and a display module 40 .
  • the light detecting module 10 is configured to detect an optical signal output by the standby indicator of the electronic device to be tested, and convert the optical signal output by the standby indicator into a corresponding signal when the optical signal output by the standby indicator is detected. Output after voltage signal;
  • the light detecting module 10 detects the optical signal output by the standby indicator of the electronic device to be tested, the optical signal output by the standby indicator light is converted into a voltage signal corresponding to the optical signal strength, and the voltage signal is output.
  • a signal conversion module 20 configured to convert the voltage signal into a digital level signal
  • the voltage signal received by the signal conversion module 20 is an analog voltage signal, and the voltage signal is converted into a digital level signal by the signal conversion module 20, and then supplied to the counting module 30 for counting.
  • the counting module 30 is configured to receive the digital level signal and count the number of times the received digital level signal is received;
  • the display module 40 is configured to display the value counted by the counting module.
  • the display module 40 visually reflects the number of occurrences of the digital level signal by displaying the number of times the acquired digital level signal appears, and the tester analyzes the fault based on the number of occurrences of the digital level signal.
  • a general electronic device such as a television set is often prone to problems of a restart failure and an abnormality in the life of the power supply of the switch.
  • the television is tested by the fault detecting device of the present invention and can be accurately detected.
  • the count value on the display module 40 is an initial value, such as 0. If the TV is restarted, the standby indicator will flash once, that is, each time it is restarted, the counting module 30 will record accordingly. If it is restarted three times, the counting value on the display module 40 is 3, so that the display is displayed. The number displayed by module 40 can determine whether the television has waited for an electronic device to have a restart failure. Of course, the display module 40 can display the counted values through different display contents, such as Arabic numerals, English letters, etc., for example, when the letter F is displayed on the display module 40, the television is restarted 16 times.
  • the TV is turned on for 50 seconds, and the shutdown for 10 seconds is indicated as a normal power fluctuation.
  • the counting result displayed on the display module 40 of the fault detecting device should be 1 time. If different counting results occur, Then, it can be judged that the power fluctuation of the television is abnormal, so that the worker only needs to check the result displayed by the fault detecting device to know whether the television has abnormal power fluctuation.
  • the fault detecting device of the present invention When detecting the indicator light of the electronic device such as a television set, the fault detecting device of the present invention counts once and accumulates the counting result, so that the test staff can intuitively perform different tests on the electronic device. View the displayed result and analyze whether the electronic device is faulty based on the displayed result. Since the circuit of the invention is simple and easy to implement, the fault detecting device of the invention is used instead of the manual detecting, thereby realizing reliable testing of the electronic device to be tested in an extreme environment, thereby saving labor cost and improving the working efficiency of fault detection of the electronic device to be tested.
  • the electronic device to be tested may be a device with a standby indicator light such as a television set, a DVD, a set top box, etc., and is not limited herein.
  • the electronic device can use the fault detecting device to measure the electronic device. The device performs fault detection to ensure product quality.
  • the signal feedback end of the light detecting module 10 is connected to the signal input end of the signal conversion module 20, and the signal output end of the signal conversion module 20 and the counting module 30.
  • the input end is connected, and the output end of the counting module 30 is connected to the controlled end of the display module 40.
  • the light detecting module 10 converts the optical signal into a voltage signal and outputs the signal to the signal converting module 20 to be converted into a digital level signal.
  • the counting module 30 is connected to the signal converting module 20, and when receiving the digital level signal, The digital level signal is counted and the value counted by the digital level signal of the display module 40 connected thereto is controlled for display.
  • the light detecting module 10 includes an ambient light sensor 11, and a power input end of the ambient light sensor 11 is connected to a first power supply VCC1, and a ground end of the ambient light sensor 11 The output end of the ambient light sensor 11 is a signal feedback end of the light detecting module 10.
  • the ambient light sensor 11 has high integration, few components, and high sensitivity. Therefore, the ambient light sensor 11 is aligned with the standby indicator of the machine to track the change of the ambient light, so that the working state of the standby indicator of the electronic device to be tested can be accurately obtained. .
  • the external light control command is received by the ambient light sensor 11 on the television.
  • the ambient light sensor 11 when testing the electronic device to be tested having the standby indicator, the ambient light sensor 11 is aligned with the standby indicator of the electronic device to be tested, and the ambient light sensor 11 is converted into a voltage according to the received ambient light intensity. Different analog voltages ranging from 0 to 3.3V are output.
  • the signal conversion module 20 is an A/D converter IC1, an A/D conversion pin I/O of the A/D converter IC1 and the photodetecting module 10
  • the signal feedback end is connected, and the signal output end of the A/D converter IC1 is connected to the input end of the counting module 30.
  • the A/D converter IC1 converts the analog voltage signal into a digital level signal, and the A/D converter IC1 has high integration and is easy to implement, thereby reducing the production cost, and the A/D converter IC1 will be the ambient light sensor 11
  • the output analog voltage is converted to a digital level signal with a voltage range of 0-255 and output.
  • the counting frequency of the counting module 30 is the same as the sampling frequency of the light detecting module 10.
  • the counting module 30 is preferably a counter (not shown).
  • the A/D converter IC1 and the counter are preferably MCS51 type 8-bit microcontrollers. Since the microcontroller has high versatility, high reliability, and wide functions, the above A/D converter IC1 and counter can be used. It is implemented by the same microcontroller to save circuit cost.
  • the counting function of the microcontroller when it is determined that the digital level after the A/D conversion reaches a preset value, counting starts, and the counting frequency of the microcontroller is based on the sampling frequency of the light detecting module 10. control.
  • the display module 40 includes a plurality of digital display tubes LEDs, and the plurality of digital display tubes LEDs are arranged side by side for displaying the counting result of the counting module. .
  • the display module 40 can be implemented by using an LCD display screen, a single digital display tube LED or an LED display module.
  • the display modules 40 can all implement the requirements for displaying the result counted by the counting module 30.
  • a single digital display tube LED is preferably used, and the digital display tube LED is easy to drive, low in cost, and easy to implement.
  • each digital tube has seven light-emitting diodes, so different numbers and letters can be displayed by outputting different high and low levels, and each digital tube can display 0-F for a total of 16 times, in this implementation.
  • the number of LEDs of the digital display tube can be selected according to design requirements, and is not limited herein.
  • the fault detecting device further includes a reset circuit 50, the reset circuit 50 includes a first resistor R1 and a first capacitor C1; and a first end of the first capacitor C1
  • the power supply pin VDD of the A/D converter IC1 is connected to the second power supply VCC2, and the second end of the first capacitor C1 is coupled to the first end of the first resistor R1 and the A/D converter IC1.
  • the reset pin REST interconnects the second end of the first resistor R1 to ground.
  • the power supply voltage does not jump directly to the voltage range in which the A/D converter IC1 can operate due to the moment when the fault detecting device is powered on. And when the external input voltage is low (voltage is in the critical range), the A/D converter IC1 cannot work reliably at this time. Therefore, by setting the reset circuit 50, it is ensured that when the power-on delay state is utilized or when the power supply voltage of the A/D converter IC1 is insufficient, the reset is performed, and the control program is re-executed to prevent the A/D converter IC1 from being issued. Incorrect instructions, perform error operations.
  • the A/D converter IC1 is reset to a high level reset.
  • the power supply voltage starts to charge the first capacitor C1 through the first resistor R1.
  • the reset pin REST is high.
  • Level, A/D converter IC1 starts resetting.
  • the reset pin REST is low, and the A/D converter IC1 operates normally.
  • the detecting module further includes a crystal module 60.
  • the crystal module 60 includes a second capacitor C2, a third capacitor C3, and a crystal CR.
  • the first end of the crystal CR is a first end of the second capacitor C2 and a first pin XTAL1 of the A/D converter IC1 are interconnected, a second end of the crystal CR and a first end of the third capacitor C3 and the A
  • the second pin XTAL2 of the /D converter IC1 is interconnected, and the second end of the second capacitor C2 and the second end of the third capacitor C3 are both grounded.
  • crystal oscillator module 60 is used to provide a basic clock signal to the A/D converter IC1 system.
  • the invention also provides a fault detection method.
  • the fault detection method includes the following steps:
  • Step S10 detecting an optical signal output by the standby indicator of the electronic device to be tested, and when detecting the optical signal output by the standby indicator, converting the optical signal output by the standby indicator into a corresponding voltage signal and outputting .
  • the optical signal output by the standby indicator of the electronic device to be tested When the optical signal output by the standby indicator of the electronic device to be tested is detected, the optical signal output by the standby indicator light is converted into a voltage signal corresponding to the intensity of the optical signal, and the voltage signal is output.
  • Step S20 converting the voltage signal into a digital level signal.
  • the received voltage signal is an analog voltage signal
  • the voltage signal is converted to a digital level signal.
  • Step S30 receiving the digital level signal, and counting the number of times the received digital level signal is received.
  • Step S40 displaying the counted value.
  • the number of times the acquired digital level signal appears is displayed to visually reflect the number of occurrences of the digital level signal, and the tester analyzes the fault based on the number of occurrences of the digital level signal.
  • a general electronic device such as a television set is often prone to problems of a restart failure and an abnormality in the life of the power supply of the switch.
  • the fault detection method of the present invention By testing the television set by the fault detection method of the present invention, it can be accurately detected.
  • the count value is the initial value, for example 0. If the TV is restarted, the standby indicator will flash once, that is, each time it is restarted, how many times will be recorded accordingly. If it is restarted three times, the display result will have a count value of 3, so that the TV number can be judged by the displayed number. Check if the electronic device has a restart failure. Of course, it is also possible to display the counted values by different display contents, such as Arabic numerals, English letters, etc., for example, when the letter F is displayed, the television is restarted 16 times.
  • the TV is turned on for 50 seconds, and the shutdown for 10 seconds is expressed as a normal power fluctuation.
  • the count result displayed at this time should be 1 time. If different counting results appear, the TV power can be judged.
  • the fluctuation is abnormal, so that the worker only needs to check the displayed result to know whether the electronic device under test has abnormal power fluctuation.
  • the fault detection method of the electronic device of the television When the fault detecting method of the electronic device of the television is detected to be illuminated once, the fault detection method is counted once, and the counting result is displayed, so that the test staff can intuitively perform different tests on the electronic device. View the displayed result and analyze whether the electronic device is faulty based on the displayed result. Since the circuit of the invention is simple and easy to implement, the fault detection method of the invention is used instead of manual detection, thereby realizing reliable testing of the electronic equipment in an extreme environment, thereby saving labor cost and improving the working efficiency of the fault detection of the electronic device to be tested.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

一种故障检测装置及方法，该故障检测装置包括：光检测模块(10)，用于检测待测电子设备的待机指示灯输出的光信号，并在检测到待机指示灯输出的光信号时，将待机指示灯输出的光信号转换成对应的电压信号后输出；信号转换模块(20)，用于将电压信号转换成数字电平信号；计数模块(30)，用于接收数字电平信号，并对接收到的数字电平信号的次数进行计数；显示模块(40)，用于显示计数模块所计数的数值。本故障检测装置代替了人工检测，实现了电子设备在极端环境下可靠试验，以节约人力成本，并提高了对电子设备故障检测的工作效率。

Description

故障检测装置及方法
技术领域
本发明涉及电子产品测试技术领域，尤其涉及一种故障检测装置及方法。
背景技术
在DVD、机顶盒及电视机等电子设备研发的过程中，需要通过大量模拟用户的使用环境的试验，来检验电子设备是否存故障，以提高设备的生产质量。为了更好的检验电子设备的是否存在故障，有些试验需要在低温负荷零下15度或高温老化40度以上，甚至是高湿度等极端环境下进行。
而在试验的过程中，每个设备试验的时间长短不一，且存在的故障都不尽相同，故测试人员需要消耗大量时间与精力去进行试验，并且在一些极端的环境下，测试人员难以长时间进行作业，无法完成对电子设备的试验。
发明内容
本发明的主要目的是提供一种故障检测装置及方法，旨在方便测试员对电子设备进行测试。
为实现上述目的，本发明提出一种故障检测装置包括：
光检测模块，用于检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出；
信号转换模块，用于将所述电压信号转换成数字电平信号；
计数模块，用于接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数；
显示模块，用于显示所述计数模块所计数的数值。
优选地，所述光检测模块的信号反馈端与所述信号转换模块的信号输入端连接，所述信号转换模块的信号输出端与所述计数模块的输入端连接，所述计数模块的输出端与所述显示模块的受控端连接。
优选地，所述光检测模块包括环境光传感器，所述环境光传感器具有电源端、接地端及输出端，所述环境光传感器的电源输入端与第一供电电源连接，所述环境光传感器的接地端接地，所述环境光传感器的输出端为所述光检测模块的信号反馈端。
优选地，所述环境光传感器根据接收到的环境光强弱转换成0-3.3V的不同模拟电压，并输出。
优选地，所述信号转换模块为A/D转换器，所述A/D转换器的A/D转换脚与所述光检测模块的信号反馈端连接，所述A/D转换器的信号输出端与所述计数模块的输入端连接。
优选地，所述计数模块的计数频率与所述光检测模块的采样频率相同。
优选地，所述计数模块为计数器。
优选地，所述显示模块包括多个数码显示管，多个所述数码显示管并排设置，用于对所述计数模块的计数结果进行显示。
优选地，所述显示模块包括LCD显示屏。
优选地，所述显示模块包括LED显示模组。
优选地，所述故障检测装置还包括复位电路，所述复位电路包括第一电阻及第一电容；所述第一电容的第一端与所述A/D转换器的电源脚VDD及第二供电电源连接，所述第一电容的第二端与所述第一电阻的第一端及所述A/D转换器的复位脚互连所述第一电阻的第二端接地。
优选地，所述故障检测装置还包括晶振模块，所述晶振模块包括第二电容、第三电容及晶振，所述晶振的第一端与所述第二电容的第一端及所述A/D转换器的第一引脚互连，所述晶振的第二端与所述第三电容的第一端及所述A/D转换器的第二引脚互连，所述第二电容的第二端与所述第三电容的第二端均接地。
本发明还提出一种故障检测方法，所述故障检测方法包括以下步骤：
检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出；
将所述电压信号转换成数字电平信号；
接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数；
显示所计数的数值。
本发明通过光信号检测模块来检测电子设备的待机指示灯，并将该光信号转换成电压信号后，输出至信号转换模块进行信号转换后输出至计数模块，以使所述计数模块在获得该数字电平时开始计数，并通过显示模块将所述计数模块所计数的数值显示出来，这样，当待测指示灯亮一次，故障检测装置便计数一次，便可得知电子设备是否发生过重启，以及电子设备的待机指示显示是否出现异常等故障，非常方便；并且，本发明利用简单的故障检测装置代替了人工检测，实现了电子设备在极端环境下可靠试验，以节约人力成本，并提高了对电子设备故障检测的工作效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明故障检测装置较佳实施例的功能模块示意图；
图2为图1所示故障检测装置的电路结构示意图；
图3为图2中A/D转换器与数码显示管的电路结构示意图；
图4为本发明故障检测方法较佳实施例的流程示意图。
附图标号说明：
标号 名称 标号 名称
10 光检测模块 11 环境光传感器
20 信号转换模块 R1 第一电阻
30 计数模块 C1 第一电容
40 显示模块 C2 第二电容
50 复位电路 C3 第三电容
60 晶振模块 IC1 A/D转换器
VCC1 第一供电电源 XTAL1 第一引脚
VCC2 第二供电电源 XTAL2 第二引脚
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提供一种故障检测装置，适用于具有待机指示灯的电子设备中。
参照图1，在本发明一实施例中，该故障检测装置包括光检测模块10、信号转换模块20、计数模块30及显示模块40。
光检测模块10，用于检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出；
当光检测模块10检测到待测电子设备的待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成该光信号强度所对应的电压信号，并将该电压信号输出。
信号转换模块20，用于将所述电压信号转换成数字电平信号；
信号转换模块20接收的电压信号为模拟电压信号，通过信号转换模块20将所述电压信号转换成数字电平信号后，提供给计数模块30进行计数。
计数模块30，用于接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数；
计数模块30每接收到一个数字电平信号，便累积计数一次，并存储。
显示模块40，用于显示所述计数模块所计数的数值。
显示模块40通过将所获取的该数字电平信号出现的次数进行显示，以直观的反应该数字电平信号出现的次数，测试人员根据数字电平信号出现的次数分析出故障。
具体地，一般的电子设备，例如电视机，经常容易出现重启故障以及开关机电源波动异常造成寿命降低的问题。通过本发明的故障检测装置对电视机进行测试，可以准确的检测出来。
在老化试验过程中，若电视机工作正常，待机指示灯是不亮的，则显示模块40上的计数值为初始值，例如0。若电视机重新启动，则待机指示灯会闪烁一次，即每重新启动一次，则计数模块30就会相应记录多少次，若重启了三次，则显示模块40上的计数值为3，这样，通过显示模块40显示的数字即可判断电视机等待测电子设备是否发生过重启故障。当然，显示模块40可以通过不同的显示内容来显示计数的数值，例如阿拉伯数字、英文字母等，例如显示模块40上显示字母F时，则代表电视机重新启动了16次。
在电源波动试验过程中，电视机开机50秒，关机10秒表示为一次正常的电源波动，此时故障检测装置的显示模块40上所显示的计数结果应该为1次，若出现不同计数结果，则可判断出电视机的电源波动异常，这样，工作人员只需查看故障检测装置所显示的结果，便可得知电视机是否出现电源波动异常。
本发明故障检测装置在检测到电视机等电子设备的待测指示灯亮一次时，累计计数一次，并将计数结果显示出来，这样测试工作人员在对电子设备进行不同的试验时，便可直观的查看显示结果，并根据该显示结果来分析电子设备是否出现故障。由于本发明电路简单、易于实现，利用本发明故障检测装置代替人工检测，从而实现待测电子设备在极端环境下可靠试验，以节约人力成本，并提高对待测电子设备故障检测的工作效率。
可以理解的是，所述待测电子设备可以是电视机、DVD、机顶盒等具有待机指示灯的设备，在此不作限制，在生产过程中，这些电子设备均可以采用该故障检测装置对待测电子设备进行故障检测，从而保证产品质量。
参照图2，在一优选实施例中，所述光检测模块10的信号反馈端与所述信号转换模块20的信号输入端连接，所述信号转换模块20的信号输出端与所述计数模块30的输入端连接，所述计数模块30的输出端与所述显示模块40的受控端连接。
本实施例中，光检测模块10将光信号转换成电压信号输出至信号转换模块20以转换成数字电平信号，计数模块30与信号转换模块20连接，在接收到该数字电平信号时，对该数字电平信号进行计数，并控制与之相连的显示模块40该数字电平信号所计数的数值进行显示。
参照图2，在一优选实施例中，所述光检测模块10包括环境光传感器11，所述环境光传感器11的电源输入端与第一供电电源VCC1连接，所述环境光传感器11的接地端接地，所述环境光传感器11的输出端为所述光检测模块10的信号反馈端。
需要说明的是，大多数电子设备中均设置有待机指示灯，待机指示灯在电子设备待机时点亮，在电子设备正常工作时不亮，并在电子设备重新启动时点亮一次，待机指示灯在亮或不亮时，周围的环境光均会发生变化。环境光传感器11集成度高，元件少，且灵敏度高，因此通过环境光传感器11对准机器的待机指示灯跟踪环境光的变化，即可精准的获知待测电子设备的待机指示灯的工作状态。如电视上便是通过环境光传感器11来接收外部控制指令。
具体地，在对具有待机指示灯的待测电子设备进行测试时，将环境光传感器11对准待测的电子设备的待机指示灯，环境光传感器11根据接收到的环境光强弱转换成电压范围为0-3.3V的不同模拟电压，并输出。
参照图2，在一优选实施例中，所述信号转换模块20为A/D转换器IC1，所述A/D转换器IC1的A/D转换脚I/O与所述光检测模块10的信号反馈端连接，所述A/D转换器IC1的信号输出端与所述计数模块30的输入端连接。
具体地，A/D转换器IC1将模拟电压信号转换成数字电平信号，且A/D转换器IC1集成度高，易于实现，从而降低生产成本，A/D转换器IC1将环境光传感器11输出的模拟电压转换成电压范围0-255的数字电平信号，并输出。
在一优选实施例中，所述计数模块30的计数频率与所述光检测模块10的采样频率相同。
具体地，所述计数模块30优选为计数器（图未示出）。
本实施例中，A/D转换器IC1和计数器均优选为MCS51型8bit微控制器，由于微控制器通用性强，可靠性高，实现功能广，故上述A/D转换器IC1和计数器可以采用同一微控制器来实现，以节约电路成本。
具体地，通过利用微控制器的计数功能，在确定经A/D转换后的数字电平达到预设值时，开始计数，且微控制器的计数频率基于所述光检测模块10的采样频率控制。
参照图2及图3，在一优选实施例中，所述显示模块40包括多个数码显示管LED，多个所述数码显示管LED并排设置，用于对所述计数模块的计数结果进行显示。
本实施例中，显示模块40可以采用LCD显示屏、单个数码显示管LED或LED显示模组来实施，这些显示模块40都能够实现将计数模块30计数的结果显示的要求。本实施例中，优选采用单个数码显示管LED，数码显示管LED易于驱动，成本低，易于实现。
具体地，每一数码管上均有七个发光二极管，故通过输出不同的高低电平即可实现不同数字及字母的显示，每一数码管均可显示0-F共16次，在本实施例中，优选设置三个数码管便可显示计数4095次，而超过4095次时，微控制器清零再重新计数。而在其他实施例中，可根据设计需求来选择数码显示管LED的个数，在此不作限制。
参照图2，在一优选实施例中，所述故障检测装置还包括复位电路50，所述复位电路50包括第一电阻R1及第一电容C1；所述第一电容C1的第一端与所述A/D转换器IC1的电源脚VDD及第二供电电源VCC2连接，所述第一电容C1的第二端与所述第一电阻R1的第一端及所述A/D转换器IC1的复位脚REST互连所述第一电阻R1的第二端接地。
本实施例中，由于在故障检测装置上电的一瞬间，电源电压不是直接跳变到A/D转换器IC1可工作的电压范围。并且在外部输入电压较低的时候（电压在临界范围），这时候A/D转换器IC1不能可靠工作。故通过设置复位电路50从而确保在上电时，利用上电延时状态或者确保A/D转换器IC1的供电电压不足的时候，进行复位，控制程序重新执行，避免A/D转换器IC1发出错误的指令、执行错误操作。
具体地，A/D转换器IC1复位为高电平复位，在A/D转换器IC1上电瞬间，电源电压通过第一电阻R1开始对第一电容C1充电，此时，复位脚REST为高电平，A/D转换器IC1开始复位，当第一电容C1达到饱和时，复位脚REST为低电平，A/D转换器IC1正常工作。
参照图2，在一优选实施例中，所述检测模块还包括晶振模块60，所述晶振模块60包括第二电容C2、第三电容C3及晶振CR，所述晶振CR的第一端与所述第二电容C2的第一端及所述A/D转换器IC1的第一引脚XTAL1互连，所述晶振CR的第二端与所述第三电容C3的第一端及所述A/D转换器IC1的第二引脚XTAL2互连，所述第二电容C2的第二端与所述第三电容C3的第二端均接地。
具体地，晶振模块60用于为A/D转换器IC1系统提供基本的时钟信号。
本发明还提供一种故障检测方法。
参照图4，该故障检测方法包括以下步骤：
步骤S10、检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出。
当检测到待测电子设备的待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成该光信号强度所对应的电压信号，并将该电压信号输出。
步骤S20、将所述电压信号转换成数字电平信号。
当接收的电压信号为模拟电压信号，将所述电压信号转换成数字电平信号。
步骤S30、接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数。
当接收到一个数字电平信号，便累积计数一次，并存储。
步骤S40、显示所计数的数值。
将所获取的该数字电平信号出现的次数进行显示，以直观的反应该数字电平信号出现的次数，测试人员根据数字电平信号出现的次数分析出故障。
具体地，一般的电子设备，例如电视机，经常容易出现重启故障以及开关机电源波动异常造成寿命降低的问题。通过本发明的故障检测方法对电视机进行测试，可以准确的检测出来。
在老化试验过程中，若电视机工作正常，待机指示灯是不亮的，则计数值为初始值，例如0。若电视机重新启动，则待机指示灯会闪烁一次，即每重新启动一次，则相应记录多少次，若重启了三次，显示结果的计数值为3，这样，通过显示的数字即可判断电视机等待测电子设备是否发生过重启故障。当然，还可以通过不同的显示内容来显示计数的数值，例如阿拉伯数字、英文字母等，例如当显示字母F时，则代表电视机重新启动了16次。
在电源波动试验过程中，电视机开机50秒，关机10秒表示为一次正常的电源波动，此时所显示的计数结果应该为1次，若出现不同计数结果，则可判断出电视机的电源波动异常，这样，工作人员只需查看显示的结果，便可得知待测电子设备是否出现电源波动异常。
本发明故障检测方法在检测到电视机等电子设备的待测指示灯亮一次时，累计计数一次，并将计数结果显示出来，这样测试工作人员在对电子设备进行不同的试验时，便可直观的查看显示结果，并根据该显示结果来分析电子设备是否出现故障。由于本发明电路简单、易于实现，利用本发明故障检测方法代替人工检测，从而实现电子设备在极端环境下可靠试验，以节约人力成本，并提高对待测电子设备故障检测的工作效率。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (13)

  1. 一种故障检测装置，其特征在于，包括：
    光检测模块，用于检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出；
    信号转换模块，用于将所述电压信号转换成数字电平信号；
    计数模块，用于接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数；
    显示模块，用于显示所述计数模块所计数的数值。
  2. 如权利要求1所述的故障检测装置，其特征在于，所述光检测模块的信号反馈端与所述信号转换模块的信号输入端连接，所述信号转换模块的信号输出端与所述计数模块的输入端连接，所述计数模块的输出端与所述显示模块的受控端连接。
  3. 如权利要求2所述的故障检测装置，其特征在于，所述光检测模块包括环境光传感器，所述环境光传感器具有电源端、接地端及输出端，所述环境光传感器的电源输入端与第一供电电源连接，所述环境光传感器的接地端接地，所述环境光传感器的输出端为所述光检测模块的信号反馈端。
  4. 如权利要求3所述的故障检测装置，其特征在于，所述环境光传感器根据接收到的环境光强弱转换成0-3.3V的不同模拟电压，并输出。
  5. 如权利要求1所述的故障检测装置，其特征在于，所述信号转换模块为A/D转换器，所述A/D转换器的A/D转换脚与所述光检测模块的信号反馈端连接，所述A/D转换器的信号输出端与所述计数模块的输入端连接。
  6. 如权利要求1所述的故障检测装置，其特征在于，所述计数模块的计数频率与所述光检测模块的采样频率相同。
  7. 如权利要求6所述的故障检测装置，其特征在于，所述计数模块为计数器。
  8. 如权利要求1所述的故障检测装置，其特征在于，所述显示模块包括多个数码显示管，多个所述数码显示管并排设置，用于对所述计数模块的计数结果进行显示。
  9. 如权利要求1所述的故障检测装置，其特征在于，所述显示模块包括LCD显示屏。
  10. 如权利要求1所述的故障检测装置，其特征在于，所述显示模块包括LED显示模组。
  11. 如权利要求5所述的故障检测装置，其特征在于，所述故障检测装置还包括复位电路，所述复位电路包括第一电阻及第一电容；所述第一电容的第一端与所述A/D转换器的电源脚VDD及第二供电电源连接，所述第一电容的第二端与所述第一电阻的第一端及所述A/D转换器的复位脚互连所述第一电阻的第二端接地。
  12. 如权利要求1所述的故障检测装置，其特征在于，所述故障检测装置还包括晶振模块，所述晶振模块包括第二电容、第三电容及晶振，所述晶振的第一端与所述第二电容的第一端及所述A/D转换器的第一引脚互连，所述晶振的第二端与所述第三电容的第一端及所述A/D转换器的第二引脚互连，所述第二电容的第二端与所述第三电容的第二端均接地。
  13. 一种故障检测方法，其特征在于，所述故障检测方法包括以下步骤：
    检测待测电子设备的待机指示灯输出的光信号，并在检测到所述待机指示灯输出的光信号时，将所述待机指示灯输出的光信号转换成对应的电压信号后输出；
    将所述电压信号转换成数字电平信号；
    接收所述数字电平信号，并对接收到的所述数字电平信号的次数进行计数；
    显示所计数的数值。
PCT/CN2016/112474 2016-09-28 2016-12-27 故障检测装置及方法 WO2018058823A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610859681.6A CN106249089B (zh) 2016-09-28 2016-09-28 故障检测装置及方法
CN201610859681.6 2016-09-28

Publications (1)

Publication Number Publication Date
WO2018058823A1 true WO2018058823A1 (zh) 2018-04-05

Family

ID=57611072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/112474 WO2018058823A1 (zh) 2016-09-28 2016-12-27 故障检测装置及方法

Country Status (2)

Country Link
CN (1) CN106249089B (zh)
WO (1) WO2018058823A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108957288A (zh) * 2018-06-11 2018-12-07 南京尤尼泰信息科技有限公司 一种适用于多种规格晶振的测试基板
CN112698060A (zh) * 2020-12-14 2021-04-23 中科彭州智慧产业创新中心有限公司 一种检测装置
CN112911763A (zh) * 2021-02-02 2021-06-04 北京富润成照明系统工程有限公司 一种检测远程灯具故障的装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106249089B (zh) * 2016-09-28 2020-04-10 深圳Tcl数字技术有限公司 故障检测装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944730A (zh) * 2012-11-05 2013-02-27 深圳创维－Rgb电子有限公司 电压异常状态自动检测装置
CN204203442U (zh) * 2014-08-28 2015-03-11 张学钦 一种闪光灯使用寿命测试系统
CN205353706U (zh) * 2015-12-22 2016-06-29 成都史塔克智能科技有限公司 一种电器设备故障监控系统
CN205545719U (zh) * 2016-01-18 2016-08-31 四川长虹电器股份有限公司 自动检测和显示电视故障的诊断系统
CN106199373A (zh) * 2015-04-30 2016-12-07 常熟海量声学设备科技有限公司 电子设备智能故障诊断方法与装置
CN106249089A (zh) * 2016-09-28 2016-12-21 深圳Tcl数字技术有限公司 故障检测装置及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3319310B2 (ja) * 1996-11-08 2002-08-26 松下電器産業株式会社 故障診断回路
CN102890235B (zh) * 2011-07-18 2015-09-02 西门子公司 一种故障检测方法及装置
CN102638662B (zh) * 2012-03-21 2014-11-26 深圳创维－Rgb电子有限公司 电视机面光源照明方法和装置
CN104039035B (zh) * 2013-03-06 2015-12-23 北京同步科技有限公司 智能灯光断电后再通电的节能设备及处理方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944730A (zh) * 2012-11-05 2013-02-27 深圳创维－Rgb电子有限公司 电压异常状态自动检测装置
CN204203442U (zh) * 2014-08-28 2015-03-11 张学钦 一种闪光灯使用寿命测试系统
CN106199373A (zh) * 2015-04-30 2016-12-07 常熟海量声学设备科技有限公司 电子设备智能故障诊断方法与装置
CN205353706U (zh) * 2015-12-22 2016-06-29 成都史塔克智能科技有限公司 一种电器设备故障监控系统
CN205545719U (zh) * 2016-01-18 2016-08-31 四川长虹电器股份有限公司 自动检测和显示电视故障的诊断系统
CN106249089A (zh) * 2016-09-28 2016-12-21 深圳Tcl数字技术有限公司 故障检测装置及方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108957288A (zh) * 2018-06-11 2018-12-07 南京尤尼泰信息科技有限公司 一种适用于多种规格晶振的测试基板
CN108957288B (zh) * 2018-06-11 2023-10-13 南京尤尼泰信息科技有限公司 一种适用于多种规格晶振的测试基板
CN112698060A (zh) * 2020-12-14 2021-04-23 中科彭州智慧产业创新中心有限公司 一种检测装置
CN112911763A (zh) * 2021-02-02 2021-06-04 北京富润成照明系统工程有限公司 一种检测远程灯具故障的装置

Also Published As

Publication number Publication date
CN106249089B (zh) 2020-04-10
CN106249089A (zh) 2016-12-21

Similar Documents

Publication Publication Date Title
WO2018058823A1 (zh) 故障检测装置及方法
TW201527770A (zh) 電子元件檢測裝置及其檢測方法
JP2008039462A (ja) 表示パネル検査装置及び方法
WO2020073426A1 (zh) 芯片异常检测电路及芯片异常检测装置
US10439630B2 (en) Analog-to-digital conversion circuit, a pixel compensation circuit for display panel, and methods thereof
TWI574024B (zh) 電源偵測電路
TW201522985A (zh) 功率偵測電路
WO2014079095A1 (zh) 液晶面板的测试装置及方法
US7404119B2 (en) Circuit for testing power down reset function of an electronic device
US7446483B2 (en) Backlight light source drive device
WO2020015335A1 (zh) 用于侦测感测线电容的侦测电路、侦测方法与oled显示装置
WO2015032080A1 (zh) 小电池容量电池杆的充电控制方法以及充电器
WO2017101261A1 (zh) 背光系统的验证装置
WO2012075823A1 (zh) 数字电源及与其连接的外部显示装置
JP5264196B2 (ja) 電子機器および制御方法
WO2020118764A1 (zh) 过流保护方法、显示面板及显示装置
CN211236171U (zh) 一种电源状态检测器
WO2013008967A1 (ko) Led 구동 드라이버
CN212341863U (zh) 一种基于服务器运输过程倾斜监控装置
US20070296428A1 (en) Semiconductor device having supply voltage monitoring function
JP2011259674A (ja) 電源装置
TWI714391B (zh) 用於感測消除靜電的x光機的感測器
CN220367320U (zh) 一种智能锁速度传感器监测装置
TWI785855B (zh) 檢測裝置
US11585702B2 (en) Temperature detection device and electronic apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16917567

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 20-08-2019)

122 Ep: pct application non-entry in european phase

Ref document number: 16917567

Country of ref document: EP

Kind code of ref document: A1