TWI647554B - Tandem signal transmission control module - Google Patents

Abstract

The invention provides a serial signal transmission control module, comprising: a plurality of driving masters serially connected to each other and a plurality of control modules. The driving masters are configured to collect and transmit a detection signal to a system controller. The driving master comprises: a signal input port, a plurality of slots, a processor and a signal output port. The processor is electrically connected to the signal input port, the plurality of slots and the signal output port, and the signal output port is electrically connected to the signal input port of the other driving master. The control module comprises: a connection end, a signal transmission end and a functional circuit. The connector is used to insert the slot and is electrically connected to the driving master. The signal transmitting end is electrically connected to an external sensor to receive a detection signal of the external sensor. The function circuit is electrically connected to the connection end and the signal transmission end for transmitting the detection signal to the processor. Through the signal transmission control module, the system controller can sort the driving masters according to a sorting signal, and read the detecting signals or transmitting commands to the external sensors according to the sorting of the driving masters.

Description

Tandem signal transmission control module

The technology of the present invention relates to the field of automatic control, and in particular to a serial signal transmission control module suitable for an RS-485 communication interface.

The standard RS-485 communication interface jointly released by the Telecommunications Industry Association (TIA) and the Electronic Industries Alliance (EIA) has good anti-noise interference, long-distance transmission and multi-site capability, making it a serial interface. Preferred. A digital communication network that implements this standard can communicate efficiently over long distances in an environment with electronic noise. In the configuration of a linear multi-point bus, there can be multiple receivers on one network. It is therefore suitable for use in industrial environments.

In general, in order to achieve efficient signal transmission, various signal sensors are connected in series with the system controller. In this case, in order to avoid signal compatibility, interference and other issues, a general-purpose circuit board can be fabricated, or a dedicated circuit board can be made for different needs of customers to connect various sensors.

However, a general-purpose circuit board may not use all of the ports, resulting in wasted space. Regardless of the type of circuit board, when the circuit components are damaged, it is often necessary to directly replace a new set of circuit boards by considering the cost and time of inspection and maintenance. Furthermore, if the customer needs to replace different types of signal sensors, they must re-create the exclusive circuit board, resulting in increased costs.

The main object of the present invention is to provide a signal transmission control module, which can quickly and easily replace a hardware device according to requirements, perform sorting and setting, and complete a module maintenance operation by replacing only a small number of parts. In order to achieve the above object, the present invention is achieved by the following technical means. The present invention provides a serial signal transmission control module, comprising: a plurality of driving masters and a plurality of control modules connected in series. The driving masters are configured to collect and transmit a detection signal to a system controller. The driving master comprises: a signal input port, a plurality of slots, a processor and a signal output port. The processor is electrically connected to the signal input port, the plurality of slots and the signal output port, and the signal output port is electrically connected to the signal input port of the other driving master. The control module comprises: a connection end, a signal transmission end and a functional circuit. The connector is used to insert the slot and is electrically connected to the driving master. The signal transmitting end is electrically connected to an external sensor to receive a detection signal of the external sensor. The function circuit is electrically connected to the connection end and the signal transmission end for transmitting the detection signal to the processor. The system controller sorts the driving masters according to a sorting signal, and reads the detecting signals or transmits an instruction to the external sensors according to the sorting of the driving masters.

In a preferred embodiment of the invention, the system controller is electrically coupled to one of a plurality of serially coupled drive masters.

In the preferred embodiment of the present invention, when the sorting signal is activated, all the signal output ports of the driving master output a low level to the signal input port of the next driving master, and the driving master of the highest level ranks in the first order. The driving master of the first sorting then outputs a high-order signal to the next driving master in order.

In the preferred embodiment of the present invention, the driving master reads and writes data through a chip control signal (Chip Select, CS), a clock signal (CLK), and a data transmission signal (DATA), and the driving master is controlled by the chip. Signal selects the control module and follows the clock signal The detection signal is read from the control module by the external sensor terminal or the instruction is transmitted.

In a preferred embodiment of the present invention, the serial signal transmission control module further includes a casing for covering the driving master, and the casing has a plurality of openings for providing the signal input port, The signal output port and the connection pipe of the signal transmission end.

In the preferred embodiment of the present invention, the signal input port of the nth driving master directly interfaces with the signal output port of the (n-1)th driving master, and n is an integer greater than 1.

In a preferred embodiment of the invention, the number of the plurality of slots is eight, and the maximum number of the plurality of drive masters is twelve.

1‧‧‧System Controller

2, 2a, 2n‧‧‧ drive master

20‧‧‧ Shell

201‧‧‧Opening

21, 21a‧‧‧ signal input

22‧‧‧Slots

23‧‧‧ Processor

24, 24a‧‧‧ signal output

3‧‧‧Control module

31‧‧‧Connected end

32‧‧‧Signal transmission end

33‧‧‧Functional circuit

4,4a‧‧‧External sensor

5‧‧‧Connecting line

1 is a schematic diagram of a driving master of a preferred embodiment of a serial signal transmission control module of the present invention.

2 is a schematic diagram showing the connection of a driving master, a control module and an external sensor according to a preferred embodiment of the serial signal transmission control module of the present invention.

3 is a schematic diagram of a series connection of a preferred embodiment of a serial signal transmission control module of the present invention.

4 is a timing diagram of signals of a preferred embodiment of the serial signal transmission control module of the present invention.

In order to achieve the above objects and effects, the technical means and the structure adopted by the present invention are described in detail in the preferred embodiments of the present invention. The features and functions are as follows, and it is fully understood, but it should be noted that the content is not It constitutes a limitation of the present invention.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are schematic diagrams of a driving master diagram, a driving master, a control module and an external sensor according to a preferred embodiment of the serial signal transmission control module of the present invention. A schematic diagram of the series connection. The serial signal transmission control module of the present invention is The modular driver board for automatic control of the RS-485 communication interface has a preferred operating voltage of 24 volts (V), a quiescent current of 6.5 milliamperes (mA), a scan period of 32 milliseconds (ms), and insulation resistance. The pressure is (AC 50/60Hz, 3KV/min), the isolation voltage is (AC 500 volts), and the preferred working temperature is between minus ten degrees and sixty degrees Celsius (-10~60 °C). The preferred storage temperature is Between minus 40 degrees and 85 degrees Celsius (-40 ~ 85 ° C). The serial signal transmission control module includes a plurality of driving masters (2, 2a, ... 2n) and a plurality of control modules 3 that can be serially connected to each other.

The driving masters (2, 2a, ... 2n) are connected in series with each other. Each of the driving masters 2 includes a signal input port 21, a plurality of slots 22, a processor 23, and a signal output port 24. . The signal input port of the nth driving master and the signal output port of the (n-1)th driving master can be connected through a connecting line 5 to form a serial connection form of the driving masters.

The signal input port 21 includes a power input terminal (V+, V-), an RS-485 communication interface transmission end (T/R+, T/R-), and a host module connection line (Link I/O). The signal input port 21 of the first driving master 2 in the serial sequence is electrically connected to a system controller 1 to receive the power supply, the detection signal transmission, and the control signal provided by the system controller 1. transmission. The system controller 1 can be a controller or a computer having an RS-485 communication interface for controlling the signal transmission of the driving masters.

The slot 22 can be disposed on the driving master 2 by soldering. In the preferred embodiment, the number of the slots is eight and is a slot of 10 pins.

The processor 23 is electrically connected to the signal input port 21 and the plurality of slots 22, and can be a control circuit for controlling the operation of the driving master 2 and providing temporary storage of the detection signal.

The signal output port 24 is similar to the signal input port 21, and includes a power input terminal (V+, V-), an RS-485 communication interface transmission end (T/R+, T/R-), and a host module connection line (Link I). /O). The signal input port 21 and the signal output port 24 can be the same as the male end or the female end, but is not limited thereto, and can also be a male end and a female end.

The control module 3 includes a connection end 31, a signal transmission end 32, and a function circuit 33. The connecting end 31 is a pin having the same number of positions as the slot 22, and can be inserted into the slot 22 to be electrically connected to the driving master 2.

The signal transmitting end 32 is electrically connected to an external sensor 4 for receiving a detection signal of the external sensor 4. According to the function of the control module 3, the signal transmitting terminal 32 can have different pin pins, such as a basic power input pin, a digital input pin, a current input pin, a temperature input pin, and the like.

The function circuit 33 is electrically connected to the connection end 31 and the signal transmission end 32 for transmitting the detection signal to the processor 23. The control modules 3 may include different functions according to different functional circuits 33, such as digital input, analog input, temperature input, bit input, digital output, analog output, etc., and the user may According to the demand, or according to the number of on-site detection signals and control outputs, the corresponding control module 3 is selected for insertion into the driving master and electrically connected to the corresponding external sensors (4, 4a). When the number of slots 22 is not enough, the next drive master can be connected in series. Due to the current point limitation of the RS-485 communication interface, a single transmission sequence can control up to 192 input/output points (I/O). In the preferred embodiment of the present invention, the number of slots per drive master is eight (16 I/O), and the maximum number of serial connections of the drive master is twelve.

In an embodiment of the invention, the serial signal transmission control module further includes a casing 20 for covering the driving master, and the casing 20 has a plurality of openings 201 for providing the signal input. The port 21, the signal output port 24, and the connection pipe of the signal transmitting end 32.

Please refer to FIG. 4, which is a signal timing diagram of a preferred embodiment of the serial signal transmission control module of the present invention. After the serial signal transmission control module is set, the system controller 1 will issue a sorting signal, and the following sorting commands are received, and the driving masters are connected in series. The order is automatically stored in order to avoid conflicts. The serial connection mode and the sorting signal will be sorted according to the number of times of series connection change. When the sorting signal is activated, all the signal output ports of the driving master will output a low level signal to the signal input port of the next driving master. At this time, since the signal input port 21 of the first driving master 2 presents a high level due to being directly connected to the system controller 1, after a short period of time, the system judges that only the first driving master 2 belongs to the high level, so Drive Master 2 automatically takes the first order. Then, the signal output port 24 of the first driving master 2 outputs a high-order signal to the signal input port 21a of the next driving master 2a, and after the next driving master 2a receives a change, there is no more in a short period of time. The change automatically takes the second order, and the signal output port 24a outputs a high-order low-high-order signal to the next drive master, and so on.

After the sorting of the respective driving masters is completed, the system controller 1 sequentially reads the control modules 3 of the respective driving masters, assigns the addresses of the respective control modules 3, and completes the sorting actions of the control modules 3 in the respective driving masters, The basis for reading and writing information addresses later.

In addition, each drive master will separately process the control module data on the drive master, which can effectively save processing time. The invention uses a chip control signal (Chip Select, CS), a clock signal (CLK) and a data transmission signal (DATA) to control the signal transmission of the driving master and each control module. After the driving master selects the control module through the chip control signal, the external sensor 4 detects the detection signal or transmits an instruction from the control module according to the phase timing of the clock signal.

Therefore, referring to all the drawings, the present invention provides a serial signal transmission control module, which provides a modular serial signal transmission control module, which can be used by a user. Quickly and easily replace hardware devices as needed, and then sort them to complete the setup. In addition, when some parts are damaged, it is only necessary to replace the broken parts with the same rules. The good quality of the grid eliminates the shortcomings of the conventional technology that the entire set of circuit boards must be replaced, which effectively reduces costs and is easy to maintain.

Through the above detailed description, it can fully demonstrate that the object and effect of the present invention are both progressive in implementation, highly industrially usable, and are new inventions not previously seen on the market, and fully comply with the invention patent requirements. , 提出 apply in accordance with the law. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the embodiments and the scope of the present invention. Those skilled in the art should be able to Combinations of equivalent substitutions and obvious variations are intended to be included within the scope of the invention.

Claims (7)

A serial signal transmission control module includes: a plurality of drive masters that can be serially connected to each other and a plurality of control modules for collecting and transmitting a detection signal to a system controller, the driver The master comprises: a signal input port; a plurality of slots; a processor electrically connected to the signal input port and the plurality of slots; and a signal output port electrically connected to the processor, and the other The signal input port of the driving master is electrically connected; the control module comprises: a connecting end for inserting the slot to be electrically connected to the driving master; and a signal transmitting end for electrically connecting with an external sensor Connected to receive a detection signal of the external sensor; a functional circuit electrically connected to the connection end and the signal transmission end for transmitting the detection signal to the processor; wherein the system controls The device sorts the driving masters according to a sorting signal, and reads the detecting signals or transmits an instruction to the external sensors according to the sorting of the driving masters. The serial signal transmission control module of claim 1, wherein the system controller is electrically connected to one of a plurality of serially connected drive masters. The serial signal transmission control module according to claim 1, wherein when the sorting signal is activated, all the signal output ports of the driving master output a low level to the signal input port of the next driving master. The drive master of the highest order is ranked by the first order, and the drive master of the first order sorts and outputs a high order signal to the next drive master in order. The serial signal transmission control module of claim 1, wherein the driving master performs data through a chip control signal (Chip Select, CS), a clock signal (CLK), and a data transmission signal (DATA). Reading and writing, the driving master selects the control module through the chip control signal, and the detection signal is read from the control module by the external sensor terminal according to the clock signal or the instruction is transmitted. The serial signal transmission control module of claim 1, further comprising a casing for enclosing the driving master, the casing having a plurality of openings for providing the signal input Port, the signal output port and the connection pipe of the signal transmission end. The serial signal transmission control module according to claim 1, wherein the signal input port of the nth driving master directly interfaces with the signal output port of the (n-1)th driving master, n is An integer greater than one. The serial signal transmission control module of claim 1, wherein the number of the plurality of slots is eight, and the maximum number of the plurality of driving masters is twelve.