Design of wireless data collector

Design of wireless data collector

Abstract: This design refers to jy-dam6640-production site wireless data collector for product form design and man-machine interface design. Since the application environment of this product is the logistics information transmission at the production site, in addition to meeting the requirements of the function for the product, the design should also take into account the safety, antifouling and shockproof of the working environment, the operability and aesthetics of the interface, the ritual used with the staff, and the preferences of the positioning crowd.

introduction

According to the different uses of data collectors, they can be divided into two categories: wired data collectors and wireless data collectors. The wireless data collector is designed to meet the off-line use occasions such as on-site data acquisition and scanning the bar code of heavy objects. Wireless data collectors are mainly used in manufacturing, water conservancy, electronics, Internet of things and other fields. With the acceleration of the informatization of production process, management and equipment, the wireless data acquisition terminal on the production site will develop rapidly. Wireless data collectors used in production sites abroad mainly include handheld data collectors with storage function, wireless bar code scanners and data collectors, LED production management display Kanban, etc; There are few such products in China. And in the face of a large number of parts and components processing workshops, a large number of on-site data, how to carry out real-time control; How can manufacturing and management personnel at different levels achieve better online communication; How about the on-site operation mode and holding mode? And so on, these problems have not been comprehensively reflected in the existing products at home and abroad. This design is aimed at the above problems, and explores the smooth, fast and personalized communication in manufacturing logistics.

1. Product feature design

The dam6640 remote data acquisition module supports 6 channels of analog signal input and 4 channels of digital signal input; 6-way digital output, RS232 / 485 dual serial port, support Modbus RTU / ASCII and user-defined protocol, suitable for all kinds of industrial sites.

2. Product working characteristics design

According to the characteristics of data collection on the production site, wireless data collectors on the production site are configured at the stations, inspection points, entrances and exits of materials and tools and patrol inspectors on the production site to realize real-time data collection and communication on the operation site.

Number of channels: single ended 6-channel analog quantity; 4-way optocoupler digital input; 6-way relay digital output

Analog channel mode: 0-20mA / 4-20mA / 0-5V / 0-30V

A / D resolution: 12bit

A / D conversion rate: 1MHz

Communication interface: RS232, RS485 dual serial port

Communication protocol: Modbus RTU, ASCII, custom protocol

Parameter configuration: special upper computer software

3. Design of wireless data acquisition information interface

In the selection of operation mode, the shortcomings of easy error, low service life and high cost of touch screen operation are avoided, and the key mode is adopted.

When people operate the machine, they are mainly dominated by value, motivation and purpose. The habitual process of human vision, thinking and action should be considered in the design to make the design of the operation interface conform to people's daily habits and make the product easy to master and not easy to make mistakes. In order to reduce the uncertainty of operation, the button design adopts different execution operations to produce corresponding sound and light changes, so as to increase people's operation confidence and sense of controllability.

In the process of data collection, there may be repeated reading of the same part, or repeated recording of the same part because it is not in the same position. When designing the error prone interface, improve the design according to the user's use error frequency. Set the field value of the input data. When the input value is greater than this value, remind the operator to minimize the occurrence of errors.

3.1 information interface design of data acquisition the designer should not provide too many options in the interface design. When entering, you only need to enter the number of the collected article and fill in the quantity to complete the collection. As shown in Figure 4. The retrieval order is determined according to the input frequency of the collected parts, so that the search of special parts is fast and convenient. If there is temporarily added information, it can be used together with the help button through voice input to make the logistics realize accurate and fast transmission. The logistics identification of the whole machine can be recorded by bar code scanning. The operation procedure of the data collector can be compiled according to the actual needs, and the convenience, flexibility and universality of the operation and use process can be fully considered.

3.2 information interface design of data transmission data transmission function includes data download and upload.

When downloading data, the component information that needs to be confirmed by the data collector is transmitted from the computer to the data collector through the requirements button,

When uploading the data, the collected part data will be transmitted to the computer through the sending button.

The menu of the data collector can add the system functions to be completed, such as parts warehousing, outbound, replenishment and inventory. The same batch of data is used as both receipt data and issue data

Data, which brings convenience to the operation and reduces the re reading of data.

4 Design of durability and power saving function

In order to protect the screen of the collector, shock proof rubber with shock absorption function is installed on both sides and the middle screen of the collector, which can withstand general impact and operate normally even if it falls on the floor; Automatic power-saving operation mode design, no operation for 10 seconds, automatically enter the power-saving operation mode, and press any key to automatically 'wake up'. Therefore, two ordinary No. 7 batteries can be used normally for up to one month

above.

4. Specification parameters

features

Detailed description

mechanical properties

Length: 105 mm

Width: 68 mm

Height: 28 mm

RTU weight: 160 G

Power supply

Recommended power supply

DC12V/1A

Supply voltage

DC7V-DC30V

power waste

0.5W

Transmission selection

Serial RS232 bus

300-115200bps (38400bps by default)

Serial RS485 bus

300-115200bps (38400bps by default)

Analog quantity

Analog input

Voltage or current input:

6-way 12 bit ADC,

Ad speed is 10kHz

Digital quantity

Input digital quantity

4-way optocoupler (5-30v input), rate 10kHz

Output digital quantity

6-way relay

Data storage

Serial flash

0Mbits-64Mbits

SIM card parameters

1.8v/3.3v power supply support

temperature range

-40℃—+90℃

Humidity range

Relative humidity 95% (no condensation)

5. Summary

There are two ways to occupy the market in a certain field: one is to win by strength in the fierce competition; The second is to explore the market that others have not found. No matter which method, market segmentation and positioning and the investigation and understanding of the target population are very important. In today's era, consumer psychology generally requires products to conform to their own identity and taste. Only when we understand the characteristics and psychological needs of consumers can we have an accurate market positioning and the products will be popular on the market.

In the process of design and development, strengthen the analysis and Research on the market and target groups, and improve the designer's keen insight into the market. While grasping the market, we should also pay attention to whether the use function of the product reflects the degree of humanization, and whether the style, shape and color of the product meet the level of modern people's aesthetic needs. Only in this way can we comprehensively improve the market competitiveness of products and design successful products.