Talking about the hardware features and functions of the data collector
The data collector is also known as a handheld data terminal, or an inventory machine. It is integrated, mobile, small in size, light in weight and high in performance, suitable for hand-held. It is a terminal computer device that integrates a barcode scanning device and a PDA, with off-line operation on a battery. It has the functions of real-time acquisition, automatic storage, instant display, instant feedback, automatic processing and automatic transmission. It guarantees the authenticity, validity, real-time and availability of field data.
The hardware features of the data collector1. Operating system
The data collector is equipped with an embedded operating system. There are usually DOS-like systems, Windows_CE systems and Windows_Mobile systems (some systems are independently developed by various manufacturers and are not compatible with each other), and applications need to be independently developed on the operating system.
2. CPU processor
With the development of digital circuit technology, most data acquisition terminals use 16-bit or better 32-bit CPU (central microprocessor). With the improvement of the CPU number and main frequency, the data acquisition and processing capability and the processing speed of the data acquisition device are required to be higher and higher. The user's field work efficiency has been improved.
3. Handheld terminal memory
Currently, most products use FLASH-ROM + RAM memory. Important files such as operating system, applications, font files are stored in FLASH-ROM, which can be saved even without power supply for a long time. The collected data is stored in RAM and the data is maintained by battery and backup battery. Due to the fast read and write speed of RAM, the operation speed can be guaranteed. The size of the memory capacity of the handheld terminal determines the data capacity that can be processed at one time.
4. Power consumption
Including the power consumption of the bar scanning device, the power consumption of the display screen, the power consumption of the CPU, etc. Works on battery support.
5. Input device
Including barcode scanning input, keyboard input two ways.
6. Display output
Most of the current data collectors have large LCD screens. It can display various user information such as Chinese and English, graphics and so on. At the same time, there are stricter requirements on the display accuracy and the industrial performance of the screen.
7. Communication mode
As an extension of the computer network system, the data and processing results of the data collector should exchange information with the computer system. According to the communication mode, it is divided into batch and wireless mode: batch mode is that after the data collector collects the barcode, the collected barcode information is transmitted to the computer through the file mode using the communication seat or data cable to connect with the computer; the wireless mode is the data collector Wirelessly exchange data with PC in real time via 802.11b and GPRS.
8. Peripheral device driver capability
Using the serial port and infrared port of the data collector, various standard serial port devices can be connected, and various parallel port devices can also be connected through serial-to-parallel conversion. Including: serial and parallel printers, modems, etc., to achieve various functions of the computer.
The role of the data collectorThe functions of data collectors include data finance, data transmission, data deletion and system management. Here are a few functions to analyze the role of each function.
1. The role of data collection
It is the process of reading the barcode of the product through the scanning device, directly selecting and confirming the quantity of the product or entering it through the keyboard. It is stored in text data format in the memory of the data collector, the format is barcode, quantity.
2. The role of data transmission
Mainly realize the upload and download of product barcode, name and quantity. Data download is to transfer the required product information confirmed by the data collector from the computer to the data collector, and through the communication interface between the data collector and the computer, run the equipment provided by the equipment manufacturer in the corresponding function of the computer management system. data transfer program. Downloading can easily display the product name of the barcode currently read and the quantity that needs to be confirmed during data collection. Data upload is to transfer the collected product data to the computer through the interface, and then convert the data to the database through the processing of the computer system.
3. Data deletion function
After the data in the data collector is transmitted to the computer system, the data needs to be deleted, otherwise it will lead to the superposition of the data read again, resulting in data errors. In some cases, the data may be sent to the computer multiple times, and the deletion can only be carried out after the data is confirmed to be invalid.
4. The role of system management
Mainly to check the disk space system, date and time proofreading.
A docking station is simply an adapter with multiple interfaces, but the word "dock" is a bit confusing. It is a convenient one-stop connection between the notebook computer and multiple accessories or external devices by duplicating or even expanding the notebook computer's ports. Laptops of the same brand, usually a generic port replicator.
type c hub
Shenzhen Kingwire Electronics Co., Ltd. , https://www.kingwires.com