how about changing the memory chip to USB Flash Drive?
Changing the memory chip to USB Flash Drive
Changing the memory chip to USB Flash Drive
An optional built-in mass data memory for the TDS series of ultrasonic flow meters, these Bulk SD cards, which are developed by the Memory Range Technology Co. Ltd. And then it can automatically record the text-format data output by the flow meters on their internal serial bus.
Without opening the flow meter enclosure or removing the memory card, on the contrary, a user can still use the USB connector to copy the data file directly to the computer for further processing.
The MCU on this storage will automatically create a folder named LCEMB on the blank SD. Furthermore, the received data will be completely saved to the 0001.TXT file under the folder. A new TXT file, such as 0002.TXT, 0003.TXT, or 0004.TXT, computer will create them every time. Also, it is turning on or every 24 hours if the 0001.TXT file already exists on the bulk SD cards. Therefore, original files will not be overwritten. Instead, the newly generated file will be immediately updating with the data to be stored. Obviously consumers don’t need to be concerned that the TXT file’s size will prevent them from opening it.
Generally speaking the memory is speedier and more stable since it uses an industrial-grade 32-bit ARM series high-performance embedded processor. In addition, it can support a high-speed TF card with a capacity as large as 32G and completely support the user’s long-term use.
What’s more, the file system uses a special dynamic memory allocation algorithm to control memory consumption and release in order to improve data transmission efficiency, prevent data loss, support data storage rates of up to 14K bytes/second, and guarantee that no byte is lost over the course of prolonged operation.
The built-in memory card has a self-locking card holder as well as shockproof. On the other hand, data loss caused by unintentional poor contact between the memory card and the card holder can avoid it. And when there is no memory card or the memory card has poor contact, a buzzer will immediately sound a warning. When the memory card cannot be detected or is full, the warning will also sound eventually.
At first the memory controls a U disk and enables data copying from a USB. Secondly there is no need to install drivers because it includes a high-speed USB 2.0 interface with automated USB recognition. For instance, the power supply needs to be off before using a USB to copy data files. The memory cannot be powered simultaneously by the flow meter power source and the USB power supply.
In a word, the flow meter power supply is used by the card when it functions, negating the need for an external power source.
In order to prevent the data from being printed out simultaneously when a thermal printer is connecting to the bus, a switch to manage the printer’s power must be included.
Pin | Name | Specification |
1 | VCC | 3.6V |
2 | GND | GND |
3 | NC | NC |
4 | Data(RX) | Data input |
S2 USB Pin definition
Pin | Name | Specification |
1 | GND | GND |
2 | VCC | 5V power source |
3 | D+ | Negative data |
4 | D- | Positive data |
Indicator light
State | Display |
Working normally | Buzzer does not alarm |
Data being stored | SAVE light flashes every 5 seconds |
Abnormal condition | Buzzer alarms |
In order to make sure the SD card work functionally, please follow the below configurations:
SD card reading and writing module can help traditional single-chip microcomputers to operate on SD card files easily. It can help apply many operation and perform well.
OTG can be used to connect various devices or mobile devices for data exchange. It has fast speed and has wide applications. The host and peripheral can swap during connection.
SD card reader has many applications. The standard is based on MultiMedia card, so it is also compatible with MMC cards.
Micro SD card is compact in size, and now can be applied in many mobile devices. With SD Association kept updating standards, cards that support new standards can perform better, but need to be used on corresponding devices.
Nowadays, TF memory cards have more application scenario than before, it has larger storage space and higher transfer speed, allowing us to store more data and making our life more convenient.