CN110350715A - Non-contact electric push rod and its sliding distance acquisition methods and system, control panel - Google Patents

Abstract

The present invention provides a kind of non-contact electric push rod and its sliding distance acquisition methods and system, control panel, comprising: two slide bars disposed in parallel；Two shafts, are separately positioned on the both ends of two slide bars；Driving motor, for driving two shaft rotations；Synchronous belt is set in two shafts；Push rod is arranged on two slide bars, and is fixedly connected with synchronous belt, is moved back and forth with two slide bars of drive lower edge in synchronous belt；First magnet is arranged below a shaft；The lower section of push rod is arranged in second magnet；Control panel is arranged below two slide bars, and surface is provided with magnetic coder and Hall switch, the first magnet of magnetic coder face, Hall switch face slide bar lower section, for the sliding distance according to magnetic coder and the signal acquisition push rod of Hall switch acquisition.Non-contact electric push rod and its sliding distance acquisition methods of the invention and system, control panel greatly improve the service life of electric pushrod.

Description

Non-contact electric push rod, method and system for obtaining sliding distance thereof, and control panel

technical field

The invention relates to an electric push rod, in particular to a non-contact electric push rod and its sliding distance acquisition method and system, and a control panel.

Background technique

An electric push rod is an electric drive device that converts the rotary motion of an electric motor into the linear reciprocating motion of a push rod. It can be used as an execution machine in various simple or complex technological processes to realize remote control, centralized control or automatic control.

Usually, the electric push rod includes a stator end and a sliding end, and the sliding end makes linear reciprocating motion along the stator end, and the sliding position is judged by means of a sliding rheostat. In the prior art, the stator end and the sliding end are usually in contact with each other, and are easily affected by dust and the like and cannot slide smoothly, thus resulting in a short service life of the electric push rod.

Contents of the invention

In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a non-contact electric push rod and its sliding distance acquisition method and system, control panel, and accurately obtain the sliding distance of the push rod through non-contact magnets and push rods. distance, thus greatly improving the service life of the electric push rod.

In order to achieve the above purpose and other related purposes, the present invention provides a non-contact electric push rod, comprising: two sliding rods arranged in parallel; two rotating shafts respectively arranged at both ends of the two sliding rods; a driving motor , used to drive the two rotating shafts to rotate; the synchronous belt is sleeved on the two rotating shafts; the push rod is arranged on the two sliding rods and is fixedly connected with the synchronous belt to Driven by the synchronous belt, it reciprocates along the two slide bars; the first magnet is set under a rotating shaft; the second magnet is set under the push rod; the control panel is set under the two slide bars , the surface is provided with a magnetic encoder and a Hall switch, the magnetic encoder is facing the first magnet, and the Hall switch is facing the bottom of the slide bar, for according to the magnetic encoder and the Hall switch The signal collected by the Er switch is used to obtain the sliding distance of the push rod.

In an embodiment of the present invention, the driving motor and a rotating shaft are replaced by a gear motor; the first magnet is disposed under the rotating shaft.

In an embodiment of the present invention, the magnetic encoder is a rotary magnetic encoder.

In an embodiment of the present invention, the Hall switch is disposed directly below the end of the slider.

In one embodiment of the present invention, the timing belt is a belt.

The present invention provides a method for obtaining the sliding distance of the above-mentioned non-contact electric push rod, comprising the following steps:

Sending a drive command to the drive motor, so that the drive motor drives the push rod to move directly above the Hall switch;

Obtaining the Hall signal generated by the Hall switch, and using the position of the push rod at the moment corresponding to the Hall signal as a zero point;

Obtain the rotation angle of the magnetic encoder from said zero point;

Calculate the sliding distance of the push rod according to the zero point and the rotation angle.

In one embodiment of the present invention, calculating the sliding distance of the push rod according to the zero point and the rotation angle includes the following steps:

calculating a rotation length according to the rotation angle and the rotation radius of the rotating shaft;

The sliding distance is calculated according to the zero point, the rotation length and the rotation direction of the rotating shaft.

The present invention provides a sliding distance acquisition system according to the above-mentioned non-contact electric push rod, which includes a sending module, a zero point acquisition module, a rotation angle acquisition module and a calculation module;

The sending module is used to send a driving command to the driving motor, so that the driving motor drives the push rod to move directly above the Hall switch;

The zero point obtaining module is used to obtain the Hall signal generated by the Hall switch, and use the position of the push rod at the time corresponding to the Hall signal as the zero point;

The rotation angle obtaining module is used to obtain the rotation angle of the magnetic encoder from the zero point;

The calculation module is used to calculate the sliding distance of the push rod according to the zero point and the rotation angle.

The invention provides a control panel, including: a processor and a memory;

The memory is used to store computer programs;

The processor is configured to execute the computer program stored in the memory, so that the control panel executes the above-mentioned method for acquiring the sliding distance of the non-contact electric push rod.

In an embodiment of the present invention, the control panel adopts a PCB board.

As mentioned above, the non-contact electric push rod and its sliding distance acquisition method and system, and control panel of the present invention have the following beneficial effects:

(1) Accurately obtain the sliding distance of the push rod through the non-contact magnet and push rod;

(2) The influence of dust etc. on the smoothness of sliding is avoided, and the service life of the electric push rod is greatly improved.

Description of drawings

Fig. 1 shows the side view of the non-contact electric push rod in one embodiment of the present invention;

Fig. 2 shows the top view of the non-contact electric push rod in an embodiment of the present invention;

Fig. 3 shows the flow chart of the method for obtaining the sliding distance of the non-contact electric push rod in an embodiment of the present invention;

FIG. 4 shows a schematic structural view of a sliding distance acquisition system of a non-contact electric push rod in an embodiment of the present invention;

FIG. 5 is a schematic view showing the structure of the control panel in an embodiment of the present invention.

Component designation description

11 slider

12 shafts

13 drive motor

14 timing belt

15 putters

16 first magnet

17 Second magnet

18 control panel

181 magnetic encoder

182 Hall switch

41 sending module

42 Zero point acquisition module

43 Rotation angle acquisition module

44 computing modules

51 processors

52 memory

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without any substantial change in the technical content.

The non-contact electric push rod and its sliding distance acquisition method and system, and the control panel of the present invention accurately obtain the sliding distance of the push rod through non-contact magnets and push rods, avoiding the influence of dust and the like on the sliding of the push rod, thereby greatly improving The service life of the electric push rod is improved.

As shown in Figures 1 and 2, in one embodiment, the non-contact electric push rod of the present invention includes:

Two sliding rods 11 arranged in parallel, preferably, the two push rods are made of metal.

The two rotating shafts 12 are respectively arranged at the two ends of the two sliding rods 11 . Preferably, the turning radii of the two rotating shafts 12 are equal.

The driving motor 13 is used to drive the two rotating shafts 12 to rotate. Specifically, the driving motor 12 may be connected to one shaft to drive the two shafts through a main shaft and a slave shaft; it may also be connected to two shafts at the same time to drive the two shafts at the same time.

The synchronous belt 14 is sheathed on the two rotating shafts 12 . Specifically, when the drive motor 12 is connected to a rotating shaft, the driving motor 13 drives the connected rotating shaft to rotate, and then drives the other rotating shaft to rotate through the synchronous belt 14, so that the synchronous belt 14 can rotate around the Two rotating shafts 12 rotate. When the drive motor 13 is connected to the two rotating shafts at the same time, it can directly drive the two rotating shafts to rotate, and then drive the synchronous belt 14 to rotate around the two rotating shafts 12 . In one embodiment of the present invention, the timing belt 14 is a belt.

The push rod 5 is arranged on the two sliding rods 11 and is fixedly connected with the timing belt 4 so as to reciprocate along the two sliding rods 11 driven by the timing belt 14 . Specifically, the push rod 15 is slidably provided on the two slide rods 11 . When the drive motor 13 is started, it drives the synchronous belt 14 to rotate around the two rotating shafts 12, and then drives the push rod 15 fixedly connected to the synchronous belt 14 and the two sliding rods 11 to perform linear reciprocating motion.

The first magnet 16 is arranged below a rotating shaft. Specifically, the first magnet 16 is fixedly arranged under a rotating shaft.

The second magnet 17 is arranged below the push rod 15 . Specifically, the second magnet 17 is fixedly arranged below the push rod 15 .

The control panel 18 is arranged under the two slide bars 11, and the surface is provided with a magnetic encoder 181 and a Hall switch 182, the magnetic encoder 181 is facing the first magnet 16, and the Hall switch 182 is facing Below the sliding rod 11 , it is used to obtain the sliding distance of the push rod 15 according to the signals collected by the magnetic encoder 181 and the Hall switch 182 . Specifically, the magnetic encoder 181 is arranged opposite to the first magnet 16 below the rotating shaft, so that the rotation angle of the first magnet 16 can be collected by the magnetic encoder 181 . The Hall switch 182 is arranged directly below the above-mentioned slide bar 11, so that when the slide bar 11 moves to the Hall switch 182, a Hall signal can be detected in real time, and the hall signal corresponding to the Hall signal can be detected. The position of the push rod 15 is set as zero, so as to set a reference point for the calculation of the sliding distance of the push rod 15. Based on the zero point, the sliding distance of the push rod 15 can be accurately obtained according to the rotation angle collected by the magnetic encoder 181 and the rotation radius of the rotating shaft 12, thereby greatly improving the present invention in a non-contact manner. The service life of the electric push rod.

In an embodiment of the present invention, the magnetic encoder 181 is a rotary magnetic encoder.

In an embodiment of the present invention, the Hall switch 182 is disposed directly below the end of the slider 11 . Specifically, taking the end point of the sliding rod 11 as the zero point can simplify the subsequent calculation of the sliding distance of the push rod.

In an embodiment of the present invention, the driving motor 13 and a rotating shaft 12 are replaced by a gear motor. Specifically, in order to simplify the structure of the non-contact electric push rod of the present invention, the driving motor and a rotating shaft can be replaced with a gear motor, that is, the gear motor realizes the driving and rotating shaft functions. While the gear motor is rotating, it drives the other rotating shaft to rotate through the synchronous belt, thereby driving the movement of the push rod relative to the slide rod. Preferably, the rotation radius of the gear motor is the same as the rotation radius of the rotating shaft. The magnetic encoder 181 is disposed below the gear motor.

As shown in Figure 3, in one embodiment, the method for obtaining the sliding distance of the non-contact electric push rod of the present invention includes the following steps:

Step S31 , sending a drive command to the drive motor, so that the drive motor drives the push rod to move directly above the Hall switch.

Specifically, the control panel sends a driving command to the driving motor, and the driving motor drives the push rod to move in the direction of the Hall switch according to the driving command.

Step S32, acquiring the Hall signal generated by the Hall switch, and using the position of the push rod at the moment corresponding to the Hall signal as a zero point.

When the push rod moves above the Hall switch, the Hall switch generates a Hall signal. The control panel acquires the real-time position of the push rod according to the Hall signal, and uses the real-time position as a zero point, so as to provide a reference for the subsequent sliding distance of the push rod.

Step S33, obtaining the rotation angle of the magnetic encoder from the zero point.

Specifically, the rotation angle of the magnetic encoder from the zero point to the current position is collected.

Step S34, calculating the sliding distance of the push rod according to the zero point and the rotation angle.

Specifically, the sliding length of the push rod can be obtained according to the rotation angle and the rotation radius of the rotating shaft, and the real-time position of the push rod can be obtained according to the zero point.

In one embodiment of the present invention, calculating the sliding distance of the push rod according to the zero point and the rotation angle includes the following steps:

41) Calculate the rotation length according to the rotation angle and the rotation radius of the driving motor.

Specifically, the rotation length is equal to between the rotation angle and the rotation radius. Wherein, the rotation angle refers to a radian angle.

42) Calculate the sliding distance according to the zero point, the rotation length and the rotation direction of the rotating shaft.

Specifically, along the rotation direction of the rotating shaft, the rotation length is moved from the zero point, that is, the real-time position of the push rod is reached.

As shown in FIG. 4 , in one embodiment, the sliding distance acquisition system of the non-contact electric push rod of the present invention includes a sending module 41 , a zero point acquisition module 42 , a rotation angle acquisition module 43 and a calculation module 44 .

The sending module 41 is used to send a driving command to the driving motor, so that the driving motor drives the push rod to move directly above the Hall switch.

The zero point obtaining module 42 is used to obtain the Hall signal generated by the Hall switch, and use the position of the push rod at the moment corresponding to the Hall signal as the zero point.

The rotation angle acquisition module 43 is used to acquire the rotation angle of the magnetic encoder from the zero point.

The calculation module 44 is used for calculating the sliding distance of the push rod according to the zero point and the rotation angle.

It should be noted that the structures and principles of the sending module 41, the zero point acquisition module 42, the rotation angle acquisition module 43 and the calculation module 44 correspond to the steps in the method for acquiring the sliding distance of the above-mentioned non-contact electric push rod one by one, so here No longer.

It should be noted that it should be understood that the division of the various modules of the above system is only a division of logical functions, and may be fully or partially integrated into a physical entity or physically separated during actual implementation. And these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware. For example, the x module can be a separate processing element, and can also be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code. Call and execute the function of the above x module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element mentioned here may be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC), or, one or more microprocessors (digitalsingnalprocessor, referred to as DSP), or, one or more Field Programmable Gate Arrays (Field Programmable Gate Array, FPGA for short), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU for short) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC for short).

As shown in FIG. 5 , in one embodiment, the control panel of the present invention includes: a processor 51 and a memory 52 .

The memory 52 is used to store computer programs.

The memory 32 includes various media capable of storing program codes such as ROM, RAM, magnetic disk, U disk, memory card or optical disk.

The processor 51 is connected to the memory 52, and is used to execute the computer program stored in the memory 52, so that the control panel executes the above-mentioned method for obtaining the sliding distance of the non-contact electric push rod.

Preferably, the processor 51 can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (Digital Signal Processor, referred to as DSP), Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In an embodiment of the present invention, the control panel adopts a PCB board.

In summary, the non-contact electric push rod and its sliding distance acquisition method and system, and the control panel of the present invention accurately obtain the sliding distance of the push rod through non-contact magnets and push rods; avoid dust and other impacts on sliding fluency Impact, greatly improving the service life of the electric push rod. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. a kind of non-contact electric push rod, it is characterised in that: include:

Two slide bars disposed in parallel；

Two shafts, are separately positioned on the both ends of described two slide bars；

Driving motor, for driving described two shafts to rotate；

Synchronous belt is set in described two shafts；

Push rod, setting is fixedly connected on described two slide bars, and with the synchronous belt, in the drive lower edge of the synchronous belt Described two slide bars move back and forth；

First magnet is arranged below a shaft；

The lower section of the push rod is arranged in second magnet；

Control panel is arranged below described two slide bars, and surface is provided with magnetic coder and Hall switch, the magnetic coder First magnet described in face, below slide bar described in the Hall switch face, for according to the magnetic coder and the Hall Switch the sliding distance of push rod described in the signal acquisition of acquisition.

2. non-contact electric push rod according to claim 1, it is characterised in that: the driving motor and a shaft are replaced For gear motor；First magnet is arranged below shaft.

3. non-contact electric push rod according to claim 1, it is characterised in that: the magnetic coder is compiled using rotary magnetic Code device.

4. non-contact electric push rod according to claim 1, it is characterised in that: the Hall switch is arranged in the cunning Underface at rod end point.

5. non-contact electric push rod according to claim 1, it is characterised in that: the synchronous belt uses belt.

6. a kind of sliding distance acquisition methods of non-contact electric push rod described in one of -5 according to claim 1, feature It is: the following steps are included:

Driving instruction is sent to driving motor, so that the driving motor drives the push rod being moved to the Hall switch just Top；

The hall signal that the Hall switch generates is obtained, and the hall signal is corresponded into the push rod position at moment as zero Point；

Obtain rotation angle of the magnetic coder since the zero point；

According to the sliding distance of the zero point and the rotation angle calculation push rod.

7. the sliding distance acquisition methods of non-contact electric push rod according to claim 6, it is characterised in that: according to institute State zero point and it is described rotation angle calculation push rod sliding distance the following steps are included:

Length of rotation is calculated according to the radius of turn of the rotation angle and the shaft；

The sliding distance is calculated according to the direction of rotation of the zero point, the length of rotation and the shaft.

8. a kind of sliding distance of non-contact electric push rod described in one of -5 according to claim 1 obtains system, feature It is: obtains module including sending module, zero point, rotation angle obtains module and computing module；

The sending module is for sending driving instruction to driving motor, so that the driving motor drives the push rod to be moved to The surface of the Hall switch；

The zero point obtains module and is used to obtain the hall signal that the Hall switch generates, and by the hall signal to it is corresponding when The push rod position at quarter is as zero point；

The rotation angle obtains module for obtaining rotation angle of the magnetic coder since the zero point；

The computing module is used for the sliding distance according to the zero point and the rotation angle calculation push rod.

9. a kind of control panel, it is characterised in that: include: processor and memory；

The memory is for storing computer program；

The processor is used to execute the computer program of the memory storage, so that the control panel perform claim requires The sliding distance acquisition methods of non-contact electric push rod described in any one of 6 to 7.

10. control panel according to claim 9, it is characterised in that: the control panel uses pcb board.