Optical microswitch assembly

Abstract

The utility model relates to an optical microswitch assembly, comprising an optical sensor which can control a first signal output by the optical sensor according to a condition that light is shielded; the signal output module comprises a first control piece, and the first control piece can control a second signal output by the signal output module according to the first signal; the signal detection module comprises a second control part and a third control part, the second control part can determine whether the third control part can receive the second signal or not according to the voltage of the second signal, and the third control part can control the third signal output by the signal detection module according to the second signal. The beneficial effects of the utility model are that the signal output module can process the output signal of the optical sensor, so that the signal is anti-interference during long-distance transmission. And the signal detection module can receive the second signal output by the signal output module and output a signal according to the second signal so as to realize the function of the optical microswitch.

Description

Technical Field

[0001] This utility model relates to the field of optical micro-switches, and in particular to an optical micro-switch assembly. Background Technology

[0002] Optical microswitches utilize optical principles and optical coupling technology. A light path is formed by a light-emitting element and a light-receiving element. During the process of cutting off and closing the optical path, the light-blocking element actuates the optical coupler, changes the circuit impedance value, and completes the circuit switching, thereby realizing the conversion between electricity and light and controlling the open and closed circuits of the switch. Moreover, photoelectric devices are mutually isolated between input and output.

[0003] In dual-power transfer switches, there is a growing trend of replacing metal-contact microswitches with optical microswitches. Although optical microswitches exhibit low jitter and fast response, their output signal strength is relatively weak. They are susceptible to interference during long-distance signal transmission, thus requiring further improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an optical micro-switch assembly.

[0005] This utility model is achieved through the following technical solution:

[0006] An optical micro-switch assembly, the optical micro-switch assembly comprising:

[0007] An optical sensor that can control the first signal output by the optical sensor according to the condition of light being blocked;

[0008] A signal output module includes a first control element, which is capable of controlling a second signal output by the signal output module according to the first signal;

[0009] The signal detection module includes a second control element and a third control element. The second control element can determine whether the third control element can receive the second signal based on the voltage of the second signal. The third control element can control the third signal output by the signal detection module based on the second signal.

[0010] Preferably, when the optical sensor detects that the light is blocked, the first signal is at a low level;

[0011] When the optical sensor detects that the light is not blocked, the first signal is at a high level.

[0012] Preferably, the first control element is a MOSFET;

[0013] When the first signal is low, the second signal is high;

[0014] When the first signal is high, the second signal is low.

[0015] Preferably, the second control component is a voltage regulator tube;

[0016] When the voltage of the second signal is greater than the preset regulated voltage, the third control unit can receive the second signal;

[0017] When the voltage of the second signal is less than the preset regulated voltage, the third control unit cannot receive the second signal.

[0018] Preferably, the third control component is a transistor;

[0019] When the second signal is high, the third signal is low;

[0020] When the second signal is low, the third signal is high.

[0021] Preferably, the signal output module further includes a first level boosting component, which is used to increase the voltage of the second signal; and / or

[0022] The signal detection module further includes a second level boosting component, which is used to increase the voltage of the second signal; and / or

[0023] The signal detection module further includes a level pull-down component, which is used to reduce the voltage of the second signal.

[0024] Preferably, the first level-raising component includes a pull-up resistor; and / or

[0025] The second level-up component includes a pull-up resistor; and / or

[0026] The low-level component includes a pull-down resistor.

[0027] Preferably, the first level-up component, the second level-up component, and the level-down component are capable of making the current characteristics of the low-level second signal within a first preset range, and also capable of making the current characteristics of the high-level second signal within a second preset range.

[0028] Preferably, the signal output module and the signal detection module are connected via a cable; and / or

[0029] The signal detection module is connected to the signal receiver via a cable.

[0030] The beneficial effects of this utility model are:

[0031] In this invention, the signal output module can process the output signal of the optical sensor, enabling the signal to resist interference during long-distance transmission. The signal detection module can receive the second signal output by the signal output module and output a signal based on the second signal to realize the function of an optical micro-switch.

[0032] Furthermore, the signal output module increases the voltage of the second signal through a first level boosting component; and regardless of the level of the first signal output by the optical sensor, the second signal output by the signal output module always has a certain current. This configuration improves the anti-interference performance of the voltage-based second signal during long-distance transmission.

[0033] Furthermore, the signal detection module includes a second control element, a second level-up component, and a level-down component. The second level-up component and the level-down component can adjust the second signal received by the signal detection module so that the second signal can pass through the second control element. When the voltage of the second signal is greater than the preset regulated voltage of the second control element, the second signal can pass through the second control element, allowing the third control element to receive the second signal. This configuration improves the reliability of the component and avoids signal abnormalities caused by insufficient signal voltage when the light source is partially blocked due to jitter or incomplete operation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the connection structure of the optical micro-switch assembly of this utility model;

[0035] Figure 2 This is a schematic diagram of the circuit structure of the signal output module of this utility model;

[0036] Figure 3 This is a schematic diagram of the circuit structure of the signal detection module of this utility model. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Reference Figure 1This invention provides an optical micro-switch assembly. The optical micro-switch assembly includes an optical sensor, a signal output module, and a signal detection module. The optical sensor acquires optical signals; the signal output module is a driving circuit for the optical sensor, converting the optical signals into electrical signals; the signal detection module is connected to the signal output module via a cable to transmit the electrical signals over a long distance. The signal detection module detects the electrical signals output by the signal output module and sends signals to a receiving end. The receiving end can be a processor.

[0039] Reference Figure 2 The optical sensor includes a light source and a light source receiver. The light source is disposed on one side wall of the U-shaped groove, and the light source receiver is disposed on the other side wall of the U-shaped groove. The light source emits light to the light source receiver, which receives the light and outputs a first signal. When there is an obstruction inside the U-shaped groove, the light received by the light source receiver weakens, causing a corresponding change in the first signal.

[0040] The signal output module includes an optical sensor U1, a first control unit Q1, and a first level pull-up component.

[0041] The left side of the optical sensor U1 is the light source, with pins 1 and 2 connected to a signal source to emit light. The right side of the optical sensor U1 is the light source receiver, with pins 3 and 4 outputting a first signal, photo_out, based on the received light. Specifically, when the optical sensor detects that the light is not blocked, current can flow through the light source receiver, and the first signal photo_out is high. When the optical sensor detects that the light is blocked, current cannot flow through the light source receiver, and the first signal photo_out is low.

[0042] The first control unit Q1 is specifically a MOSFET. The first control unit Q1 outputs a second signal of_output based on the first signal photo_out. Specifically, when the first signal photo_out is low, the first control unit Q1 is not turned on, and the second signal of_output is high; when the first signal photo_out is high, the first control unit Q1 is turned on, and the second signal of_output is low.

[0043] The first level-up component includes resistors R5, R6, and R7. R5, R6, and R7 increase the voltage of the second signal, of_output, output by the signal output module. Then, the second signal, of_output, is transmitted to the signal detection module via a cable. Transmitting the second signal at a higher voltage over long distance improves the signal's anti-interference capability.

[0044] Reference Figure 3The signal detection module includes a second level pull-up component, a level pull-down component, a second control component, and a third control component.

[0045] The second level-raising component includes resistors R485 and R486, which increases the voltage of the second signal of_output received by the signal detection module. The level-lowering component includes resistors R487, R488, R489, and R490, which decreases the voltage of the second signal of_output received by the signal detection module. The second signal of_output, processed by the second level-raising and level-lowering components, is then sent to the second control unit.

[0046] The second control unit is specifically a Zener diode D157. When the second signal of_output is greater than the preset regulated voltage, the second signal of_output can be transmitted to the third control unit through the Zener diode D157; when the voltage of the second signal of_output is less than the preset regulated voltage, the second signal of_output cannot be transmitted through the Zener diode D157, and the third control unit cannot receive the second signal of_output.

[0047] The third control unit is specifically a transistor. When the second signal of_output received by the third control unit is high, the third signal output by the third control unit is low; when the second signal of_output received by the third control unit is low, the third signal output by the third control unit is high.

[0048] The working principle of this embodiment is as follows: When the light source is blocked, no current flows through the light source receiver of U1, the first signal photo_out is low, the first control unit Q1 is not turned on, and the second signal of_output is high. The voltage of the high-level second signal of_output is higher than the driving voltage of the Zener diode D157 and the third control unit Q11, causing the third control unit Q11 to turn on, and the third signal CPU_OF_IN is low.

[0049] When the light source is not blocked, current flows through the light source receiver of U1, the first signal photo_out is high, the first control unit Q1 is turned on, and the second signal of_output is low. The voltage of the low-level second signal of_output is lower than the driving voltage of the Zener diode D157 and the third control unit Q11, so the third control unit Q11 cannot be turned on, and the third signal CPU_OF_IN is high.

[0050] The first level boosting component increases the voltage of the second signal of_output output by the signal output module. Regardless of whether the light source is blocked, a certain current is transmitted to the signal detection module through the cable, which significantly improves the anti-interference capability of long-distance signal transmission.

[0051] The second level pull-up component and the level pull-down component of the signal detection module can adjust the voltage of the second signal of_output to an appropriate range, and the reliability of the component can be further improved in conjunction with the Zener diode D157. Specifically, the voltage of the first signal and the voltage of the second signal will change according to the area of ​​the light source being blocked. In this embodiment, the second signal can only be transmitted to the third control unit through the Zener diode D157 when the voltage of the second signal exceeds the preset Zener voltage of the Zener diode D157. This setting can avoid signal abnormalities caused by mechanical structure jitter or incomplete operation of the light source blocking mechanism.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A photoelectric micro-switch assembly, characterized in that, include: An optical sensor that can control the first signal output by the optical sensor according to the condition of light being blocked; A signal output module includes a first control element, which is capable of controlling a second signal output by the signal output module according to the first signal; The signal detection module includes a second control element and a third control element. The second control element can determine whether the third control element can receive the second signal based on the voltage of the second signal. The third control element can control the third signal output by the signal detection module based on the second signal.

2. The optical micro-switch assembly according to claim 1, characterized in that, When the optical sensor detects that the light is blocked, the first signal is at a low level; When the optical sensor detects that the light is not blocked, the first signal is at a high level.

3. The optical micro-switching assembly according to claim 1, characterized in that, The first control element is a MOSFET; When the first signal is low, the second signal is high; When the first signal is high, the second signal is low.

4. The optical micro-switch assembly according to claim 1, characterized in that, The second control component is a voltage regulator tube; When the voltage of the second signal is greater than the preset regulated voltage, the third control unit can receive the second signal; When the voltage of the second signal is less than the preset regulated voltage, the third control unit cannot receive the second signal.

5. The optical micro-switch assembly according to claim 1, characterized in that, The third control component is a transistor; When the second signal is high, the third signal is low; When the second signal is low, the third signal is high.

6. The optical micro-switching assembly according to claim 1, characterized in that, The signal output module further includes a first level boosting component, which is used to increase the voltage of the second signal; and / or The signal detection module further includes a second level boosting component, which is used to increase the voltage of the second signal; and / or The signal detection module further includes a level pull-down component, which is used to reduce the voltage of the second signal.

7. The optical micro-switching assembly according to claim 6, characterized in that, The first level-up component includes a pull-up resistor; and / or The second level-up component includes a pull-up resistor; and / or The low-level component includes a pull-down resistor.

8. The optical micro-switch assembly according to claim 6, characterized in that, The first level-up component, the second level-up component, and the level-down component enable the current characteristics of the low-level second signal to be within a first preset range, and also enable the current characteristics of the high-level second signal to be within a second preset range.

9. The optical micro-switch assembly according to claim 1, characterized in that, The signal output module and the signal detection module are connected by a cable; and / or The signal detection module is connected to the signal receiver via a cable.

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