CN212111681U - But form emulation switch performance trend detector - Google Patents

Abstract

The utility model provides a but form emulation switch performance trend detector, with the application of cross sharp module to switch life-span detector on, its cross sharp module comprises step motor, ball, slider. The stepping motor is driven by an embedded driving module, the embedded driving module is in data communication with a PC through a 232 interface, and the PC controls the operation of the stepping motor. Meanwhile, the pressure sensor is connected with a manipulator arranged on the crossed linear module, and the manipulator is driven to complete the simulation process through the movement of the crossed linear module. Signals of the pressure sensor and current signals of the analog load in the switch detection process are converted into digital signals through the embedded driving module, the digital signals are transmitted to the PC through the 232 serial port, and the printer assists the PC to finish printing of detection reports. The utility model discloses the device has improved the degree of accuracy of testing result, makes to detect more accurate, more reasonable, has shortened detection cycle, has improved switch product quality.

Description

But form emulation switch performance trend detector

Technical Field

The utility model relates to a switch product detects technical field, particularly, especially relates to a but form emulation switch performance trend detector.

Background

The switch is an essential electrical element in various devices, instruments and meters and households. There is a problem of the service life regardless of the switch. Switch manufacturers, switch users and product quality detectors need to sample switches in a batch. The enterprises for producing the switch in China are numerous, so the using amount of the switch life tester is very large.

At present, the switch life detector in China basically adopts the following structure: the speed reducing motor, the joint connector, the ejector rod, the cam and the like form a mechanical execution part simulation switch, and the detection is carried out in the actual use process, and the following structural forms are mainly adopted.

(1) Cam-spring-slider form: the switch service life tester takes a motor as a power source, adopts a cam-spring-slider transmission structure form, drives a pressing component to perform reciprocating pressing operation on a switch, and realizes pressing force required by different switches through weights loaded on a pressing rod. The fine adjustment device on the top can adjust the corresponding pressing stroke. Before carrying out the relevant life test, simply set up operating frequency and total number of times of operation, open and closed number of times through the record of counter. The main problems of the method are as follows: high failure rate, complex operation and single function.

(2) The reciprocating form of the lead screw is as follows: the switch life tester takes a stepping motor as a power source to drive a road shaft to act, so that the switch can complete the required structural action, stroke and conduction process. And a mechanical and electrical integration design is adopted. The main problems of the method are as follows: the driving structure is complex and has low reliability.

(3) Eccentric wheel-connecting rod-slider form: the switch service life tester takes a motor as a power source, adopts an eccentric wheel-connecting rod-sliding block type transmission structure form, drives a pressing component to perform reciprocating pressing operation on a switch, and records opening and closing times through a counter on the reciprocating and sliding rail of the sliding block. The worktable is adjusted in position by manual fine adjustment. The main problems of the method are as follows: the motor is required to perform continuous forward-reverse rotation operations tens of thousands to hundreds of thousands of times at a relatively fast frequency, and the reliability and the failure rate of the product are low.

The switch service life detector with the structure has low reliability and high failure rate, and is easy to cause structural damage to a sample switch and inaccurate in detection result.

SUMMERY OF THE UTILITY MODEL

In light of the above-mentioned technical problems, a programmable simulation switch performance trend detector is provided. The utility model discloses on using the switch life-span detector with the cross sharp module, its cross sharp module comprises step motor, ball, slider. The stepping motor is driven by an embedded driving module, and the embedded driving module is in data communication with the PC through a 232 interface. The PC controls the operation of the stepper motor. Meanwhile, the pressure sensor is connected with a manipulator arranged on the crossed linear module, and the manipulator is driven to complete the simulation process through the movement of the crossed linear module. Signals of the pressure sensor and current signals of the analog load in the switch detection process are converted into digital signals through the embedded driving module, and the digital signals are transmitted to the PC through the 232 serial port.

The utility model discloses a technical means as follows:

a programmable simulation switch performance trend detector includes: the PC, the actuating mechanism, the 10A load power supply and the printer are electrically connected;

the PC is used for controlling the operation of the actuating mechanism, receiving the detection data, processing the data, storing the data information, storing the sample information, judging the validity of the detection process and editing and printing the detection report;

the executing mechanism mainly comprises a frame, a clamp, a cross straight line module, a manipulator and an embedded driving module; the clamp is arranged on a horizontal table surface of the frame and used for clamping the sample switch; the manipulator consists of a pressure sensor and a tail end finger and is arranged on the crossed linear module;

the cross straight-line module comprises a horizontal ball screw module and a vertical ball screw module;

the horizontal ball screw module consists of a horizontal stepping motor, a horizontal screw and a horizontal smooth block;

the vertical ball screw module consists of a vertical stepping motor, a vertical screw and a vertical sliding block;

the horizontal ball screw module is arranged on the rear vertical surface of the rack; the vertical ball screw module is arranged on a horizontal sliding block of the horizontal ball screw module; the pressure sensor is arranged on a vertical sliding block of the vertical ball screw module;

and the embedded driving module is in data communication with the PC through a 232 interface.

Further, the manipulator can move within the range of 450mm horizontally and 300mm vertically on the vertical plane under the driving of the horizontal ball screw module and the vertical ball screw module.

Furthermore, the embedded driving module comprises a pressure sensor data sampling and converting module, a current sampling and converting module, a communication interface module, a stepping motor driving module, a limiting unit, a single chip microcomputer module and a power supply module; and the embedded driving module is used for receiving the instruction of the PC and driving the horizontal stepping motor and the vertical stepping motor to move according to the instruction, completing the sampling detection of the pressure sensor and returning the sampling detection to the PC.

Furthermore, the clamp adopts 4-inch quick-acting precise flat tongs, and the front, back, left and right can be adjusted on the horizontal table top of the frame.

Further, the 10A load power supply consists of a tungsten iodine lamp and a white filament lamp and is used for providing 250V and 10A power supply.

Further, the printer is used for assisting the PC machine to complete printing of the detection report.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model provides a but form emulation switch performance trend detector, on using the cross straight line module to switch life-span detector, carry out data communication by embedded drive module and PC, and then control cross straight line module, improved the degree of accuracy of testing result, make to detect more accurate, more reasonable, shortened detection cycle, improved switch product quality.

2. The utility model provides a but form emulation switch performance trend detector connects a manipulator of installing on cross sharp module with pressure sensor, and the motion through cross sharp module drives the manipulator and accomplishes the simulation process. The damage of the detection equipment to the detection sample in the detection process, such as damage caused by mechanical impact, is reduced.

3. The manipulator of the instrument can simulate various complex actions of human fingers when operating the switch, and can carry out simulation actions such as variable speed action, horizontal action, vertical action, circular action and the like. The pressure detection instrument has a pressure detection function and can simulate the pressure used by a person when the switch is operated. Under certain pressure conditions, switch operation outside the pressure range can be detected.

Based on the reason above, the utility model discloses can extensively promote in fields such as switch product detection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a front view of the detector of the present invention.

Fig. 2 is a side view of the detector of the present invention.

Fig. 3 is a schematic structural diagram of the cross linear module of the present invention.

Fig. 4 is a circuit diagram of the embedded driving module of the detector of the present invention.

Fig. 5 is a circuit diagram of the data sampling and converting module of the pressure sensor of the present invention.

Fig. 6 is a circuit diagram of the current sampling and converting module of the present invention.

Fig. 7 is a circuit diagram of the communication interface module of the present invention.

Fig. 8 is a circuit diagram of the driving module of the stepping motor of the present invention.

Fig. 9 is a circuit diagram of the limiting unit of the present invention.

Fig. 10 is a circuit diagram of the single chip module of the present invention.

Fig. 11 is a circuit diagram of the power module of the present invention.

Fig. 12 is a circuit diagram of the load power supply of the present invention 10A.

In the figure: 1. a frame; 2. a clamp; 3. a horizontal ball screw module; 4. a horizontal stepping motor; 5. a horizontal lead screw; 6. a horizontal slider; 7. a vertical ball screw module; 8. a vertical stepping motor; 9. a vertical lead screw; 10. a vertical slider; 11. a pressure sensor; 12. a manipulator; 13. and an embedded driving module.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The utility model provides a but form emulation switch performance trend detector, include: the PC, the actuating mechanism, the 10A load power supply and the printer are electrically connected; the PC is used for controlling the operation of the actuating mechanism, receiving the detection data, processing the data, storing the data information, storing the sample information, judging the effectiveness of the detection process and editing and printing the detection report; the detecting data includes: the number of switching times; detecting a force sensor; and detecting the current. The printer is used for assisting the pc machine to finish printing the detection report.

As shown in fig. 1 and 2, the executing mechanism mainly comprises a frame 1, a clamp 2, a cross straight line module, a manipulator 12 and an embedded driving module 13; the clamp 2 is arranged on the horizontal table surface of the frame 1 and used for clamping a sample switch; the mechanical 12 hand consists of a pressure sensor 11 and a tail end finger and is arranged on the crossed linear module;

as shown in fig. 3, the crisscross linear module includes a horizontal ball screw module 3 and a vertical ball screw module 7; the horizontal ball screw module 3 consists of a horizontal stepping motor 4, a horizontal screw 5 and a horizontal sliding block 6; the vertical ball screw module 7 consists of a vertical stepping motor 8, a vertical screw 9 and a vertical slide block 10; the horizontal ball screw module 3 is arranged on the rear vertical surface of the frame 1; the vertical ball screw module 7 is arranged on the horizontal sliding block 6 of the horizontal ball screw module 3; the pressure sensor 11 is arranged on a vertical sliding block 10 of the vertical ball screw module 7;

as shown in fig. 4, the embedded driving module includes a pressure sensor data sampling and converting module, a current sampling and converting module, a communication interface module, a stepping motor driving module, a limiting unit, a single chip module, and a power module; the embedded driving module 13 performs data communication with the PC through the 232 interface, and is configured to receive an instruction from the PC, drive the horizontal stepping motor 4 and the vertical stepping motor 8 to move according to the instruction, complete sampling detection of the pressure sensor 11, and return the sampling detection to the PC.

As shown in fig. 5, the circuit diagram of the pressure sensor data sampling and converting module is shown, in this embodiment, the chip model of the pressure sensor data sampling and converting module is HX711, and the pressure sensor data sampling and converting module has two AD conversion channels, where the a channel is used for pressure AD conversion. The B channel is used for current AD conversion. The present invention uses an internal clock oscillator (XI ═ 0), 10Hz output data RATE (RATE ═ 0). The power supply (5.0V) directly adopts the same power supply as the MCU chip. The channel A is connected with the pressure sensor through the sampling circuit, and the channel B reserves current sampling AD conversion.

As shown in fig. 6, which is a circuit diagram of the current sampling and converting module, in this embodiment, the sampling precision is ensured by using the on-chip analog power supply 5V regulated output. PD _ SCK and DOUT form a serial port data communication interface, which is convenient for communication with the singlechip module. The circuit of the current sampling and converting module consists of a current transformer, a sampling resistor, a filter circuit and an AD converting chip. The current transformer is a high-precision current transformer produced by Shenyang Zhongchuan company, so that the detection precision is improved. The sampling resistor is a sampling resistor with the precision of 50 omega 1%. The secondary current of the transformer is 10mA, and a voltage of 0.5V is generated on the sampling resistor. After gain is achieved through an HX711 chip B channel 32, conversion is achieved, the data are read by the single chip microcomputer module and uploaded to a PC, and the PC corrects the data to obtain 0.1-level current data. The filter circuit is composed of a voltage-dividing resistor, a Schottky diode and a ceramic chip capacitor. The sampling circuit in the embodiment is simple, low in loss and small in signal distortion. Stabilizing the current, removing the peak current, low-pass filtering, and finishing the transmission of the signal.

As shown in fig. 7, which is a circuit diagram of the communication interface module, in this embodiment, the communication interface module has a chip model of MAX232, and includes a capacitive voltage generator to provide an EIA/TIA-232-E level when a single 5V power supply is powered, and converts a TTL level output by the single chip module into a 232 level that can be received by the PC or converts a 232 level output by the PC into a TTL level that can be received by the single chip module.

As shown in fig. 8, which is a circuit diagram of a stepping motor driving module, in this embodiment, the chip models of the stepping motor driving module are TB67S109ATFNG, TB67S109A power supply 24V, driving current 2A, and control pin voltage 5V, which are matched with the single chip microcomputer module. Several of the key functional pins are: CW/CCW, a control pin for forward rotation and reverse rotation of the stepping motor with high voltage and forward transmission and low voltage. CLK: the CLK signal is input, and the rising edge of the CLK changes the electrical angle of the stepping motor. DMODE0, DMODE1, DMODE 2: by a combination of high and low levels, different step resolutions 1, 1/2, 1/4, 1/8, 1/16, 1/32 subdivisions are selected. The control signals of CW/CCW and CLK are output by the singlechip module, and the CLK signal provides a current threshold signal for a VREF pin of TB67S109A through a 74HC123D monostable chip. In the present embodiment, two identical TB67S109A drive circuits are selected to drive the horizontal stepping motor 4 and the vertical stepping motor 8, respectively.

As shown in fig. 9, which is a circuit diagram of the limiting unit, in the present embodiment, the limiting unit is used to prevent the stepping motor from hitting the end of the linear module. The position of the slide block is detected by the sampling travel switch, a normally closed contact is used, the slide block is grounded through the travel switch in normal time, when the position of the slide block arrives, the travel switch acts, and a pin of the single chip microcomputer is changed into a high level through a pull-up resistor. The single chip detects and analyzes the position of the high level, controls the limit generated by the stepping motor, limits the movement to the direction and sends the movement to the PC.

As shown in fig. 10, which is a circuit diagram of the single chip microcomputer module, in this embodiment, an 89C51 single chip microcomputer is used, and the crystal oscillator is 11.0592 MHZ. The port P0 is used for limit detection and is connected with a limit unit. The port P1 is used for detecting pressure and current and is connected with a data port HX711 of a pressure and current AD conversion chip. The port P2 is used for driving a stepping motor and is connected with the control end of a stepping motor driving chip TB67S 109A. The serial port is used for 232 serial port communication and is connected with the channel A of the MAX232 chip.

As shown in fig. 11, which is a circuit diagram of a power module, in this embodiment, the embedded driving module uses two types of dc power sources: the stepper motor driving module uses a 24V, 4A DC power supply. The singlechip module, the sampling circuit, the AD conversion chip and the serial port communication module 232 chip use 5V and 1A direct current power supplies. Considering the simplification of the structure, a 24V and 10A pulse voltage-stabilized power supply is selected: the input alternating voltage is 220V +/-15%, the stabilized direct voltage is 24V, and the rated current is 10A. One path is directly used for supplying power for the stepping motor driving module, and the other path is used for stabilizing and reducing the voltage to 5V direct current voltage and maximum current of 3A through a voltage reduction switch type integrated voltage stabilizing circuit LM2576-5 chip.

Further, as the preferred embodiment of the present invention, the clamp is a 4-inch quick-acting precision flat tongs, and the front, back, left and right of the horizontal table of the frame can be adjusted.

Further as a preferred embodiment of the present invention, the 10A load power supply is composed of a tungsten iodine lamp and a white filament lamp for supplying 250V, 10A power. In this embodiment, as shown in fig. 12, the load current of 10A is formed by 2 1000W iodine tungsten lamps, 1 100W white filament lamp, 1 60W white filament lamp, 1 40W white filament lamp and 1 25W white filament lamp, each of which is provided with an air switch to adjust the magnitude of the alternating current.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. A programmable simulation switch performance trend detector is characterized by comprising: the PC, the actuating mechanism, the 10A load power supply and the printer are electrically connected;

the PC is used for controlling the operation of the actuating mechanism, receiving the detection data, processing the data, storing the data information, storing the sample information, judging the validity of the detection process and editing and printing the detection report;

the executing mechanism comprises a rack (1), a clamp (2), a cross straight line module, a manipulator (12) and an embedded driving module (13); the clamp (2) is arranged on a horizontal table top of the rack (1) and is used for clamping a sample switch; the manipulator (12) consists of a pressure sensor (11) and a tail end finger and is arranged on the crossed linear module;

the crossed straight line module comprises a horizontal ball screw module (3) and a vertical ball screw module (7);

the horizontal ball screw module (3) consists of a horizontal stepping motor (4), a horizontal screw (5) and a horizontal sliding block (6);

the vertical ball screw module (7) consists of a vertical stepping motor (8), a vertical screw (9) and a vertical sliding block (10);

the horizontal ball screw module (3) is arranged on the rear vertical surface of the rack (1); the vertical ball screw module (7) is arranged on a horizontal sliding block (6) of the horizontal ball screw module (3); the pressure sensor (11) is arranged on a vertical sliding block (10) of the vertical ball screw module (7);

and the embedded driving module (13) is in data communication with the PC through a 232 interface.

2. The programmable simulation switch performance trend detector of claim 1, wherein the robot (12) is driven by the horizontal ball screw module (3) and the vertical ball screw module (7) to move within a range of 450mm horizontally and 300mm vertically in a vertical plane.

3. The programmable simulation switch performance trend detector of claim 1, characterized in that the embedded driving module (13) comprises a pressure sensor data sampling and converting module, a current sampling and converting module, a communication interface module, a stepping motor driving module, a limiting unit, a single chip module and a power module; and the embedded driving module (13) is used for receiving the instruction of the PC and driving the horizontal stepping motor and the vertical stepping motor to move according to the instruction, completing the sampling detection of the pressure sensor (11) and returning the sampling detection to the PC.

4. The programmable simulation switch performance trend detector of claim 1, characterized in that the clamp (2) adopts 4-inch quick-acting precision flat tongs, and can be adjusted front, back, left and right on the horizontal table of the frame (1).

5. The programmable simulated switch performance trend detector of claim 1, wherein the 10A load power supply comprises a tungsten-iodine lamp and a white filament lamp for providing 250V 10A power supply.

6. The programmable simulated switch performance trend detector of claim 1, wherein the printer is configured to assist the PC in printing the detection report.

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