4. XGA连续识别条形码经常发生卡死现象？
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    • XGA连续识别条形码经常发生卡死现象？

    • M

      0_1621925710182_e0a3b8d69877d5096ed8e91e0830bbc.png

      运行一段时间就发生卡死现象，然后直接直接断连，图为断连前打印数据

      0_1621925828959_42c91443-0791-4986-b76d-8faca401670c-image.png

      功能是同时识别二维码和条形码，如果画面有多个条形码，就取最上面一个。

      # Barcode Example
#
# This example shows off how easy it is to detect bar codes using the
# OpenMV Cam M7. Barcode detection does not work on the M4 Camera.

import sensor, image, time, math
import time
from pyb import Pin, Timer

# 50kHz pin6 timer2 channel1
light = Timer(2, freq=50000).channel(1, Timer.PWM, pin=Pin("P6"))
light.pulse_width_percent(50) # adjust light 0~100

import sensor, image, time
sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.XGA) # High Res!
sensor.set_windowing((1000, 400))# V Res of 80 == less work (40 for 2X the speed).
sensor.skip_frames(time = 2000)
sensor.set_auto_gain(False)  # must turn this off to prevent image washout...
sensor.set_auto_whitebal(False)  # must turn this off to prevent image washout...
clock = time.clock()

# Barcode detection can run at the full 640x480 resolution of your OpenMV Cam's
# OV7725 camera module. Barcode detection will also work in RGB565 mode but at
# a lower resolution. That said, barcode detection requires a higher resolution
# to work well so it should always be run at 640x480 in grayscale...

def barcode_name(code):
    if(code.type() == image.EAN2):
        return "EAN2"
    if(code.type() == image.EAN5):
        return "EAN5"
    if(code.type() == image.EAN8):
        return "EAN8"
    if(code.type() == image.UPCE):
        return "UPCE"
    if(code.type() == image.ISBN10):
        return "ISBN10"
    if(code.type() == image.UPCA):
        return "UPCA"
    if(code.type() == image.EAN13):
        return "EAN13"
    if(code.type() == image.ISBN13):
        return "ISBN13"
    if(code.type() == image.I25):
        return "I25"
    if(code.type() == image.DATABAR):
        return "DATABAR"
    if(code.type() == image.DATABAR_EXP):
        return "DATABAR_EXP"
    if(code.type() == image.CODABAR):
        return "CODABAR"
    if(code.type() == image.CODE39):
        return "CODE39"
    if(code.type() == image.PDF417):
        return "PDF417"
    if(code.type() == image.CODE93):
        return "CODE93"
    if(code.type() == image.CODE128):
        return "CODE128"

while(True):
    clock.tick()
    img = sensor.snapshot()

    codes = img.find_barcodes()
    codeh = 0
    y = 10000000
    print(len(codes))
    if (len(codes)>1):
        for code in codes:
            img.draw_rectangle(code.rect())
            y1 =code.y()
            print(y1)
            if(y1<y):
                y = y1
                codeh = code

        if(codeh != ""):
            print_args = (barcode_name(codeh), codeh.payload(), (180 * codeh.rotation()) / math.pi, codeh.quality(), clock.fps())
            print("Barcode %s, Payload \"%s\", rotation %f (degrees), quality %d, FPS %f" % print_args)

    else:
        for code in codes:
            img.draw_rectangle(code.rect())
            codeh = code
            print_args = (barcode_name(codeh), codeh.payload(), (180 * codeh.rotation()) / math.pi, codeh.quality(), clock.fps())
            print("Barcode %s, Payload \"%s\", rotation %f (degrees), quality %d, FPS %f" % print_args)


    #img.lens_corr(1.8) # strength of 1.8 is good for the 2.8mm lens.
    for code in img.find_qrcodes():
        img.draw_rectangle(code.rect(), color = (255, 0, 0))
        print(code)
    if not codes:
        print("FPS %f" % clock.fps())
      0
    • M

      图一为卡死后自动断连的情况

      0

    • 我运行没有发现错误，你检查一下是不是USB接口松了。

      0
      M
       3 条回复
    • M

      @kidswong999 现在测试第一次12分钟就断连 重新连接后 几分钟就断连，是不是xga大画面传输 导致温度太高了，然后自己断了 。

      0
    • M

      @kidswong999 因为摸着很烫

      0
    • M

      @kidswong999
      检查了usb接口，然后使用例程里面的条形码 改为xga画质，还是运行一段时间就卡死

      # Barcode Example
#
# This example shows off how easy it is to detect bar codes using the
# OpenMV Cam M7. Barcode detection does not work on the M4 Camera.

import sensor, image, time, math

sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.XGA) # High Res!
#sensor.set_windowing((640, 80)) # V Res of 80 == less work (40 for 2X the speed).
sensor.skip_frames(time = 2000)
sensor.set_auto_gain(False)  # must turn this off to prevent image washout...
sensor.set_auto_whitebal(False)  # must turn this off to prevent image washout...
clock = time.clock()

# Barcode detection can run at the full 640x480 resolution of your OpenMV Cam's
# OV7725 camera module. Barcode detection will also work in RGB565 mode but at
# a lower resolution. That said, barcode detection requires a higher resolution
# to work well so it should always be run at 640x480 in grayscale...

def barcode_name(code):
    if(code.type() == image.EAN2):
        return "EAN2"
    if(code.type() == image.EAN5):
        return "EAN5"
    if(code.type() == image.EAN8):
        return "EAN8"
    if(code.type() == image.UPCE):
        return "UPCE"
    if(code.type() == image.ISBN10):
        return "ISBN10"
    if(code.type() == image.UPCA):
        return "UPCA"
    if(code.type() == image.EAN13):
        return "EAN13"
    if(code.type() == image.ISBN13):
        return "ISBN13"
    if(code.type() == image.I25):
        return "I25"
    if(code.type() == image.DATABAR):
        return "DATABAR"
    if(code.type() == image.DATABAR_EXP):
        return "DATABAR_EXP"
    if(code.type() == image.CODABAR):
        return "CODABAR"
    if(code.type() == image.CODE39):
        return "CODE39"
    if(code.type() == image.PDF417):
        return "PDF417"
    if(code.type() == image.CODE93):
        return "CODE93"
    if(code.type() == image.CODE128):
        return "CODE128"

while(True):
    clock.tick()
    img = sensor.snapshot()
    codes = img.find_barcodes()
    for code in codes:
        img.draw_rectangle(code.rect())
        print_args = (barcode_name(code), code.payload(), (180 * code.rotation()) / math.pi, code.quality(), clock.fps())
        print("Barcode %s, Payload \"%s\", rotation %f (degrees), quality %d, FPS %f" % print_args)
    if not codes:
        print("FPS %f" % clock.fps())
      0 1 条回复

    • @mesi 那你联系售后寄回维修，让售后复现问题。

      0