CN207763725U - A kind of absolute encoder signal is converted to the device of incremental encoder signal - Google Patents

Abstract

The utility model discloses the devices that kind of absolute encoder signal is converted to incremental encoder signal, belong to encoder techniques field, including a circuit board, absolute encoder, microcontroller, power supply chip, serial port chip and output driving circuit are integrated on circuit board；Microcontroller passes through connection with absolute encoder, power supply chip, serial port chip and output driving circuit respectively.It needs to convert absolute encoder signal to incremental encoder signal and in the Industry Control occasion not high to required precision various, the utility model only need to be installed, absolute encoder signal can be converted to incremental encoder signal, not only it is avoided that encoder is installed in repetition, reduce the complexity of system signal processing and wiring, and flexibility and the installation and debugging efficiency of control system are also improved, have a wide range of applications space.

Description

A kind of absolute encoder signal is converted to the device of incremental encoder signal

Technical field

The utility model belongs to encoder techniques field, and in particular to a kind of absolute encoder signal is converted to incremental encoding The device of device signal.

Background technology

Encoder is a kind of important industrial auxiliary device, is widely used in industrial system, be commonly used to carry out position detection, Speed control etc. can be divided into two kinds of increment type and absolute type according to its scale method and signal output form.Incremental encoder is The size of displacement is indicated with the number of pulse, counts the arbitrary measurement, it can be achieved that multi-turn infinitely adds up of starting point, there is installation letter The advantages that single, cheap and follow-up data processing work amount is small, but its booting will first look for reference bit, it can not output shaft rotation Absolute location information.Absolute encoder directly exports digital quantity signal, its each position is unique and is determined by mechanical location, The absolute value of angle coordinate can be read in any position of shaft, is not necessarily to memory, without looking for reference point, being not necessarily to count, Precision is high, and location information will not be lost after power supply excision, but in order to improve the accuracy that position synchronizes and data acquire, absolutely compiles Code device in the coding that data acquires using Gray code, using absolute encoder signal when its signal need to be converted.

Since absolute encoder is markedly superior to incremental encoder in terms of positioning, it has been increasingly being applied to pair In the relatively high industrial control system of required precision.In some industry and Reconstruction in field occasion, the displacement of collection machinery shaft is only needed to become Change amount can realize that other are detected and controlled well, and at this moment directly acquisition incremental encoder signal is just fairly simple and conveniently, If being mounted directly incremental encoder in the system for having been loaded with absolute encoder, or build the machine driving dress at simulation scene It sets, not only requirement will have suitable installation site, and can increase wiring quantity, can consequently also reduce the reliability of system, Increase installation, improvement cost.

Utility model content

For the above-mentioned technical problems in the prior art, the utility model proposes a kind of absolute encoder signals to turn It is changed to the device of incremental encoder signal, reasonable design overcomes the deficiencies in the prior art, has good effect.

To achieve the goals above, the utility model adopts the following technical solution：

A kind of absolute encoder signal is converted to the device of incremental encoder signal, including a circuit board, collects on circuit board At having absolute encoder, microcontroller, power supply chip, serial port chip and output driving circuit；Microcontroller respectively with absolute coding Device, power supply chip, serial port chip and output driving circuit pass through connection.

Preferably, which further includes upper cover, lower cover, right baffle-plate and right shell body；Right baffle-plate, right shell body are separately mounted to electricity In the slot at the both ends that the lower end of the left and right both ends of road plate, right baffle-plate and right shell body is stuck in lower cover vertically, right baffle-plate and right shell body Upper end is fixed by screw and upper cover.

Preferably, which further includes heat conductive pad；Heat conductive pad is laid on lower lid.

Preferably, microcontroller uses STM32 microcontrollers.

Preferably, serial port chip uses MAX3232 chips, is connected with PC machine.

Preferably, driving circuit is connected with load.

Preferably, PA0, PA1 pin of microcontroller and absolute encoder pass through connection, PA3, PA4, PA5 pin With output driving circuit by connection, PA7, PA8 pin are serial communication pin, are connected by circuit with serial port chip It connects.

Advantageous effects caused by the utility model：

It needs to convert absolute encoder signal to incremental encoder signal and the work not high to required precision various Industry controls in occasion, only need to install the utility model, so that it may to convert absolute encoder signal to incremental encoder signal, no It is only avoided that encoder is installed in repetition, reduces the complexity of system signal processing and wiring, and also improve control system Flexibility and installation and debugging efficiency, have a wide range of applications space.

Description of the drawings

Fig. 1 be the principles of the present invention block diagram.

Fig. 2 is the flow chart of microcontroller output control signal.

Fig. 3 is the front section view of the utility model.

Fig. 4 is the utility model side view and vertical view.

Wherein, 1- lower covers；2- circuit boards；3- heat conductive pads；4- absolute coding input sockets；5- power outlets；6- increments are compiled Code accessory power outlet；7- serial ports sockets；8- shell bores；9- right baffle-plates；10- right shell bodies；11- upper covers.

Specific implementation mode

Below in conjunction with the accompanying drawings and specific implementation mode is described in further detail the utility model：

In Fig. 1, using STM32 microcontrollers as data acquisition and control chip, and the PA0 of STM32 microcontrollers is distributed Pin receives absolute coding lowest order (C0) gray code data, and PA1 pins receive absolute coding highest order (Cn-1) Gray's yardage According to PA3, PA4, PA5 pin provide drive signal for output driving circuit, it is made to generate increment a-signal, increment B signal, increment Z signals.PA7, PA8 pin are serial communication pin, use chip MAX3232 as the interface with host computer RS232 serial communications. The utility model can be communicated by serial ports with PC machine, and the phase information of encoder, which is transmitted to PC machine, to be shown for used in analysis.From Three encoded signals of microcontroller pin output are exported through overdrive circuit amplification, conversion, and the three-phase signal of output is exactly A phases, B Phase, Z phase incremental encoding signals.

In fig. 2, microcontroller is first initialized, and A, B, Z three-phase signal original levels are low level, are then read Take the lowest order signal that absolute encoder is brought, when microcontroller detects the rising edge of lowest order signal, to A phase signals into Row negates, and when microcontroller detects the failing edge of lowest order signal, is negated to B phase signals, when microcontroller detects most When the failing edge of high signal, Z phase signals are negated, then A phases, B phases, Z phase three-phase signals are zeroed out and are recycled Repeat previous step.

In figure 3, first absolute coding input socket 4, power outlet 5, incremental encoding accessory power outlet 6, serial ports socket 7 are welded It is connected on circuit board 2, then heat conductive pad 3 is laid on lower cover 1, right baffle-plate 9 and right shell body 10 are then installed to circuit board 2 Right baffle-plate 9 and right shell body 10 are put into the slot at 1 both ends of lower cover by both ends later, cover upper cover 11, and screw is put into shell installation It in hole 8 and fastens, just constitutes complete the utility model.

In Fig. 4, right baffle-plate 9, upper cover 11, lower cover 1, four external structures that right shell body 10 is the utility model, upper cover 11 are fastened with lower cover 1 by screw, and right baffle-plate 9 and right shell body 10 pass through screw on connector and upper cover 11 and lower cover 1 It squeezes to fix.

Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above, The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered Belong to the scope of protection of the utility model.

Claims (7)

1. a kind of absolute encoder signal is converted to the device of incremental encoder signal, it is characterised in that：Including a circuit board, electricity Absolute encoder, microcontroller, power supply chip, serial port chip and output driving circuit are integrated on the plate of road；Microcontroller respectively with Absolute encoder, power supply chip, serial port chip and output driving circuit pass through connection.

2. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： The device further includes upper cover, lower cover, right baffle-plate and right shell body；Right baffle-plate, right shell body are separately mounted to left and right the two of circuit board In the slot at the both ends that the lower end of end, right baffle-plate and right shell body is stuck in lower cover vertically, the upper end of right baffle-plate and right shell body passes through screw It is fixed with upper cover.

3. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： The device further includes heat conductive pad；Heat conductive pad is laid on lower lid.

4. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： Microcontroller uses STM32 microcontrollers.

5. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： Serial port chip uses MAX3232 chips, is connected with PC machine.

6. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： Driving circuit is connected with load.

7. absolute encoder signal according to claim 1 is converted to the device of incremental encoder signal, it is characterised in that： For PA0, PA1 pin and absolute encoder of microcontroller by connection, PA3, PA4, PA5 pin and output driving circuit are logical Connection is crossed, PA7, PA8 pin are serial communication pin, pass through connection with serial port chip.