Tungsten alloy bait is becoming increasingly popular in bass &off shore fishing due to its high density, small size, and ability to sink quickly. Tungsten alloy has a much higher density than lead, which means that tungsten alloy bait can be made smaller, but with the same weight as larger lead bait. This makes them more effective in fishing because they are less prominent in the water and look more natural. Tungsten Fishing Weight,Bass Fishing,Tungsten Alloy Fishing Lure,Tungsten Alloy Fishing Weight Zhuzhou Jiuding Metal Technology Co., Ltd. , https://www.zztungstenheavyalloy.com
Tungsten alloy bass counterweights are also popular among anglers because they are much more sensitive than lead counterweights. This means that they can detect even the slightest bite, allowing anglers to quickly and effectively set their hooks. Tungsten alloy counterweights are also more durable than lead counterweights, as they are less likely to fracture or deform over time.
Overall, tungsten alloy bait and weight are a great choice for bass fishermen who want to increase their chances of catching more fish. Compared to traditional lead baits and weights, they are more effective, sensitive, and durable.
Parking lot management system common failure maintenance method
With the improvement of people’s living standards, there are more and more private vehicles, and parking management is becoming more and more complex and constantly improving. After the car park system has been used for a long time, there will be a series of minor problems. The methods of repairing some car parking system breakdowns below are hopefully helpful to you.
The parking lot management system is mainly composed of a wheel positioner (installed behind a parking space to protect against accidental collision and collision of the reverse parking device) and a bumper bar (installed on the pillars of a parking lot, corners, and walls to prevent Vehicle collision cylinder, wall), deceleration belt (installed in the entrance, downhill and other places, the color is black and white alternately, with reflective body at the bottom, at night to play a reflective role to remind the driver to slow down), wide-angle lens (installed in the sharp turn , dead ends, corners, to provide everyone with vision, to prevent the occurrence of traffic accidents), signs (stand at the exit or entrance, is to give you the correct direction of instructions), ballot box (also known as lane control machine, is The key equipment of the yard management system is generally composed of the parking lot management system or the management equipment of the card and gate in the ticketing system, and the gate (the equipment that manages the entrance and exit of vehicles).
Here are some common problems with the parking management system and the solutions:
Power on, air switch turns on the motherboard and Chinese display without any display
Parking system fault repair method:
Check whether the switching power supply has a corresponding power output, and whether the switching power supply is connected to the connection between the main board and the display control board.
Check whether the power input socket is plugged into position and whether the connection screw is tightened
The power input is normal, the G-F900 motherboard power indicator does not show or the operation indicator does not blink
Parking system fault repair method:
12V voltage detection: adjust the multimeter to the DC voltage measurement file, connect it to the GND on the motherboard with a black test lead (the same applies below), and connect the 4 feet of the 2575 (pin 4 of U1) with the red probe. The multimeter's voltage reading should be 12V
5.0V voltage detection: connect the red pin to U2's pin 4 and the multimeter's voltage reading should be 5.0V
3.3V voltage detection: Connect the red pin to U2's pin 2 and the multimeter's voltage reading should be 3.3V
1.8V voltage detection: Connect the red pin to the second pin of U4, and the voltage reading of the multimeter should be 1.8V
Power input is normal, Chinese display is not displayed
Parking system fault repair method:
Check if the display control board TVS4 (36V/500W) transient suppressor is damaged
5V voltage detection (G-81): Connect the red pin to pin 4 of the 2575 (pin 4 of U8). The voltage reading of the multimeter should be 5.0V.
5V voltage detection (G-81): Connect the red pin to the 4th pin of the 2576 (pin 4 of U10). The multimeter voltage reading should be 5.0V.
3.3V voltage detection (G-81): Connect the red pin to the second pin of the 1117 (pin 2 of U3), and the voltage reading of the multimeter should be 3.3V
When the card is near the ticket reader reading the card, you can hear the sound of "嘀嘀" and the Chinese display shows "Invalid card"
Parking system fault repair method:
Cards held are invalid (not issued or unauthorized)
The card has been released and does not download its valid permissions to the motherboard
When the small ticket box is swiped, the sound and light prompts are normal and there is no opening signal output
Parking system fault repair method:
Check whether the optical box U26 (PC357) is damaged
Check the ballast board Q1 (9013) transistor is damaged
Check whether the TVS24 (18V/500W) Transient Suppressor on the Ballast Box is damaged
When the ticket box is swiped, the sound and light prompts are normal, there is a normally open gate signal output or the relay often jumps
Parking system fault repair method:
Check the ballast board Q1 (9013) transistor is damaged
Check if the main board relay K1 (HFD41-005-HS) ​​is damaged
Check if the motherboard U11 (M74HC573M1R) is damaged
Check whether the motherboard's PR10 (1K*4) is short-circuited or not.
Failed to communicate between the parking lot management software and the mainboard
Parking system fault repair method:
Check the computer serial port is damaged
Check whether the connection between the 485 card and the mainboard is firm and correct (whether the 485 card is good)
Check whether the serial port set in the software matches the actual serial port used
Check whether the baud rate set by the corresponding serial port in the software is 19200
Check the motherboard U6 (MAX487) IC is damaged
Check if the board address matches the address set by the software
The valid card is not properly read in the entrance ticket box. The voice prompt "please wait" shows the motherboard error code "16"
Parking system fault repair method:
The number of parking spaces in the parking lot is too small, resulting in a full parking lot
The yard server is not set up or the CAN line is not connected properly
LED Chinese display information download failed or display content does not match the system loading content
Parking system fault repair method:
Check whether the communication connection between the mainboard and the display control board is firm and correct. Check whether the main board U7 (MAX487) IC is damaged.
Check the display control board U7 (MAX487) IC is damaged
Check the display control board TVSI, TVS2, TVS3 (12V/500W) transient suppressor is damaged
LED Chinese display shows incomplete fonts, lack of highlights, Huaping, etc.
Parking system fault repair method:
Check if the display driver IC: 4953/74HC595/74HC138 is damaged Check whether the LED dot matrix module has been welded or damaged.
Check whether the socket connection between the display and the display control board is tight Check if the display control board U5, U6 (74HC4050) IC is damaged.