Instructions for mictr01 tester vibrating string acquisition module development kit

MicTR01 It is a series of vibrating string modules VM5/6/7 And electronic tag reading and writing module TR01 Development testing 、 Development Kit . Use STC8 position 51 Single chip microcomputer is the core component , Demonstrate the basic usage of the above model modules , It includes the conventional methods of hardware connection and software driving when the module is used . You can also use the public technical materials of this suite to write your own code and test the software and hardware on the suite .

Hardware composition of the suite

Description of power interface

The kit has two working power input interfaces , Respectively DC power adapter power interface DC_IN and USB_TYPE The power interface . Two power supplies have been designed for protection on the board , Can be connected at the same time , You can also connect only any way .

Communication interface description

There are two external communication interfaces , Are all UART. One route USB transformation , Another routing chip is converted to RS232 level , The two interfaces are standard USB-TYPEC and DB9 seat .

Jumper group

This kit can connect multiple models of modules , In order to be compatible with the pin differences of different modules , Several jumpers are set on the kit . When installing different modules on the kit , Set the corresponding jumper according to the prompt text next to the jumper . These jumpers are divided into UART Level selection 、 Power supply selection 、 Excitation voltage VSEN choice 、 I2C Communication line selection, etc .

modular UART Level selection

In the installable modules on the kit , There may be three UART Level interface , Respectively RS232、 RS485 and TTL level , According to the specific interface type of the test module , Set the corresponding settings on the kit board . UART The level jumper has 4 Group , Must be set at the same time , As shown in the figure below .

Module power selection

This selection jumper is only for those with VIN Pin module （VM511、 VM614、 VM618、 VM714）, VIN It can be selected as V4.5V Or adjustable voltage source VADJ.

Be careful ： because VADJ The adjustable range is 5~24V, And modules VIN The maximum input voltage is 15V, When using jumper selection, you must pay attention to VADJ No more than 15V. If there is no special test purpose , It is recommended that this jumper should always be V4.5 Location .

Exciting voltage selection of vibrating wire sensor

Excitation voltage VSEN It can be selected as DC_IN Or adjustable booster power VADJ. In general , It is suggested that the VSEN The voltage is set to 8~12V The voltage between , Too high voltage will damage the sensor , In serious cases, the sensor coil may be burned , in addition , Use excessive excitation voltage for a long time , It also has a certain adverse impact on module life and performance .

Be careful ： Before powering on the kit , Turn the adjustable voltage knob to the middle position （ here VSEN about 7.7V）, Then turn on the power of the kit , When adjusting the voltage , Make sure to use a voltmeter or display real-time voltage on the screen , Avoid damage caused by high voltage .

I2C Bus SDA Line selection

Different modules SDA Different pins , When testing a specific model module I2C During communication test , The corresponding line selection should be made on the kit board . SDA There are two groups of jumpers for line selection. Just mark the jumpers according to the silk screen on the kit board ( The other jumper remains unchanged ).

Test Development Suite , It is also a vibrating wire temperature analog mixed signal acquisition instrument reading instrument , Powerful , Stable performance , It is an essential test kit in the application of vibrating wire acquisition and reading module .