CN220273322U

CN220273322U - Switch control device and electrostatic protection system

Info

Publication number: CN220273322U
Application number: CN202322990640.9U
Authority: CN
Inventors: 马骏; 吕涛; 王攀
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2023-12-29
Anticipated expiration: 2033-11-07

Abstract

The utility model discloses a switch control device and an electrostatic protection system, wherein the electrostatic protection system comprises a protection appliance and working equipment, and the switch control device comprises: the input end of the protection detector is used for being connected with the protection appliance, outputting a first detection signal when the protection appliance is detected to be connected according to the output voltage of the protection appliance, and outputting a second detection signal when the protection appliance is detected to be not connected according to the output voltage of the protection appliance; the control end of the switch circuit is connected with the output end of the protection detector, the input end of the switch circuit is used for being connected with a power supply, the output end of the switch circuit is used for being connected with working equipment, and the switch circuit is used for conducting electric connection between the power supply and the working equipment according to a first detection signal; the switching circuit is used for disconnecting the electric connection between the power supply and the working equipment according to the second detection signal. The utility model aims to strengthen the electrostatic protection capability of working equipment.

Description

Switch control device and electrostatic protection system

Technical Field

The utility model relates to the field of electrostatic protection, in particular to a switch control device and an electrostatic protection system.

Background

The existing ESD (Electro-Static discharge) protection system, namely an electrostatic protection system, is limited to supervision and inspection, and reminds personnel of making ESD protection effect mainly through an electrostatic alarm and a manual electric batch (tool).

Anti-static alarm: staff realizes the intercommunication with the earth through wearing the mode of preventing static bracelet, is responsible for leading away the static that the health produced to feed back the intercommunication state through the alarm, realize the monitoring effect.

Manual electric batch (tool): the electric batch is designed with an anti-static eliminating function, so that static electricity generated in the running process is effectively eliminated or conducted away.

For the electrostatic protection of the tools and instruments, the tools and instruments only have the function of eliminating static electricity, but the tools and instruments are separately controlled, so that the protection in the true sense is not realized. In daily work, both the protection functions of one side fail, and irrecoverable loss can be caused.

Disclosure of Invention

The utility model mainly aims to provide a switch control device and an electrostatic protection system, which aim to strengthen the electrostatic protection capability of working equipment.

In order to achieve the above object, the present utility model provides a switch control device applied to an electrostatic protection system, the electrostatic protection system including a protection tool and a working device, the switch control device comprising:

the input end of the protection detector is used for being connected with a protection appliance, outputting a first detection signal when detecting that the protection appliance is connected according to the output voltage of the protection appliance, and outputting a second detection signal when detecting that the protection appliance is not connected according to the output voltage of the protection appliance;

the controlled end of the switch circuit is connected with the output end of the protection detector, the input end of the switch circuit is used for being connected with a power supply, the output end of the switch circuit is used for being connected with working equipment, and the switch circuit is used for conducting electric connection between the power supply and the working equipment according to the first detection signal;

the switching circuit is used for disconnecting the electric connection between the power supply and the working equipment according to the second detection signal.

Optionally, the switching circuit includes:

the power supply comprises a first electronic switch, wherein the power supply input end of the first electronic switch is used for being connected with a power supply, the controlled end of the first electronic switch is connected with the output end of the protection detector, the output end of the first electronic switch is used for being connected with working equipment, the first electronic switch is used for conducting electric connection between the power supply and the working equipment according to a first detection signal, and the first electronic switch is used for disconnecting electric connection between the power supply and the working equipment according to a second detection signal.

Optionally, the first electronic switch is an intermediate relay.

Optionally, the switching circuit further includes:

the power input end of the second electronic switch is used for being connected with a power supply, the controlled end of the second electronic switch is connected with the output end of the protection detector, the output end of the second electronic switch is connected with the controlled end of the first electronic switch, the second electronic switch is used for conducting electric connection between the power supply and the controlled end of the first electronic switch according to the first detection signal, and the second electronic switch is used for disconnecting electric connection between the power supply and the controlled end of the first electronic switch according to the second detection signal.

Optionally, the second electronic switch is a solid state relay.

Optionally, the guard detector includes:

the detection interface is used for connecting the protective appliance;

the input end of the voltage detection circuit is connected with the detection interface, the voltage detection circuit is used for detecting the output voltage of the protection device, outputting a first detection signal to the switch circuit when detecting that the protection device is connected according to the output voltage of the protection device, and outputting a second detection signal to the switch circuit when detecting that the protection device is not connected according to the output voltage of the protection device.

Optionally, the guard detector further comprises:

the input end of the prompting circuit is connected with the output end of the voltage detection circuit, and the voltage detection circuit is further used for controlling the prompting circuit to work when outputting a first detection signal or a second detection signal.

Optionally, the prompting circuit includes at least one LED lamp.

Optionally, the switch control device further includes:

and the output end of the power supply circuit is connected with the power supply input end of the switching circuit, and the power supply circuit is used for providing working voltage for the switching circuit.

The utility model also provides an electrostatic protection system which comprises a protection appliance, working equipment and the switch control device, wherein the protection appliance is connected with the protection detector in the switch control device, and the working equipment is electrically connected with the switch circuit in the switch control device.

The technical scheme of the utility model comprises a switch control device through a protection detector and a switch circuit, wherein the input end of the protection detector is used for being connected with a protection appliance, and can output a first detection signal when detecting that the protection appliance is connected according to the output voltage of the protection appliance, and can also output a second detection signal when detecting that the protection appliance is not connected according to the output voltage of the protection appliance; the controlled end of the switching circuit is connected with the output end of the protection detector, the input end of the switching circuit is used for being connected with a power supply, the output end of the switching circuit is used for being connected with working equipment, and the switching circuit can conduct the electric connection between the power supply and the working equipment according to a first detection signal; the switching circuit may also disconnect the electrical connection between the power source and the working device based on the second detection signal. Thus, when the worker wears the protective device and the protective device is well connected with the protective detector, the working equipment can work normally. If the worker does not wear the protective device or the protective device is connected with the protective detector poorly after wearing the protective device, the working equipment cannot work normally. The utility model aims to strengthen the electrostatic protection capability of working equipment.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a functional module of an embodiment of a switch control device according to the present utility model;

fig. 2 is a schematic functional block diagram of another embodiment of the switch control device of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a switch control device which is applied to an electrostatic protection system.

Referring to fig. 1, in an embodiment of the present utility model, a switch control apparatus includes:

a guard detector 10, wherein an input end of the guard detector 10 is used for being connected with a guard, outputting a first detection signal when the guard is detected to be connected according to the output voltage of the guard, and outputting a second detection signal when the guard is detected to be not connected according to the output voltage of the guard;

the control end of the switch circuit 20 is connected with the output end of the protection detector 10, the input end of the switch circuit 20 is used for being connected with a power supply, the output end of the switch circuit 20 is used for being connected with working equipment, and the switch circuit 20 is used for conducting electric connection between the power supply and the working equipment according to the first detection signal;

the switch circuit 20 is configured to disconnect the electrical connection between the power source and the working device according to the second detection signal.

In this embodiment, the protection device to which the protection detector 10 is connected may be an antistatic device such as an antistatic glove or an antistatic bracelet, and when the protection device is worn by a worker, the protection device may absorb static electricity generated on the worker. The guard detector 10 may include an electrostatic sensor therein that may detect electrostatic charge in the surrounding environment. The electrostatic sensor may be a capacitive sensor, an ionization sensor, an electric field sensor, or the like, and measures and senses the presence and level of electrostatic charge according to different operating principles. The protection detector 10 can output a corresponding electrical signal, i.e. the first detection signal or the second detection signal, to the switch circuit 20 by detecting the electrostatic charge. For example, if the input end of the protection detector 10 is well connected with the protection device, the protection detector 10 can detect the electrostatic charge in the protection device, so as to output a high-level electric signal, namely a first detection signal; if the input end of the guard detector 10 is poorly connected to the guard, or if the input end of the guard detector 10 is not connected to the guard, the guard detector 10 cannot detect the electrostatic charge in the guard, and thus outputs an electrical signal of low level, i.e., a second detection signal. In addition, the guard detector 10 may also discharge static electricity in the guard by means of grounding or the like.

The switching circuit 20 may then be formed by one or more switching devices, such as a relay or a switching tube. The switching circuit 20 is provided between the power source and the working device, and whether the working device is turned on or not can be controlled by turning on and off the switching circuit 20, thereby controlling the working state of the working device. It will be appreciated that the switch circuit 20 may be configured to receive a high level on, a low level off, or a low level on, and the specific on and off conditions of the switch circuit 20 may be set according to the actual situation. In the present embodiment, the switching circuit 20 is set to receive the high-level on state and the low-level off state is described as an example. When the switch circuit 20 receives the high-level electric signal output by the protection detector 10, i.e. the first detection signal, it indicates that the worker wears the protection apparatus, and the protection apparatus is well connected with the protection detector 10, and at this time, there is no problem in the electrostatic protection measure of the working equipment, the switch circuit 20 can be turned on, the power supply can be output to the working equipment, and the working equipment works normally. When the switch circuit 20 receives the low-level electric signal output by the protection detector 10, namely, the second detection signal, the worker does not wear the protection device, or the worker wears the protection device but the protection device is not connected with the protection detector 10, at the moment, static electricity of the protection device cannot be released through the protection detector 10 and possibly affects the work of the working equipment, at the moment, the switch circuit 20 is disconnected, a power supply cannot be output to the working equipment, the working equipment stops working, and the phenomenon that the static electricity is output to the working equipment due to poor connection or non-connection of the protection device and the protection detector 10 can be avoided, so that the working equipment is damaged, and the effect of static electricity protection is achieved. By arranging the protection detector 10 and the switch circuit 20, the working state of the working equipment can be related with the wearing condition of the protection device, so that the electrostatic protection capability of the working equipment is further improved.

The technical scheme of the utility model comprises a switch control device through a protection detector 10 and a switch circuit 20, wherein the input end of the protection detector 10 is used for being connected with a protection appliance, and can output a first detection signal when detecting that the protection appliance is connected according to the output voltage of the protection appliance, and can also output a second detection signal when detecting that the protection appliance is not connected according to the output voltage of the protection appliance; the controlled end of the switch circuit 20 is connected with the output end of the protection detector 10, the input end of the switch circuit 20 is used for being connected with a power supply, the output end of the switch circuit 20 is used for being connected with working equipment, and the switch circuit 20 can conduct the electric connection between the power supply and the working equipment according to a first detection signal; the switching circuit 20 may also disconnect the electrical connection between the power source and the working device based on the second detection signal. Such that the work equipment can work properly when the worker wears the protective gear and the protective gear is connected well with the protective detector 10. If the worker does not put on the protective device or if the protective device is poorly connected to the protective detector 10 after putting on the protective device, the working apparatus cannot work normally. The utility model aims to strengthen the electrostatic protection capability of working equipment.

Referring to fig. 2, in one embodiment, the switching circuit 20 includes:

the power supply input end of the first electronic switch 21 is used for being connected with a power supply, the controlled end of the first electronic switch 21 is connected with the output end of the protection detector 10, the output end of the first electronic switch 21 is used for being connected with working equipment, the first electronic switch 21 is used for conducting electric connection between the power supply and the working equipment according to the first detection signal, and the first electronic switch 21 is used for disconnecting electric connection between the power supply and the working equipment according to the second detection signal.

In this embodiment, the switch circuit 20 may be formed by a first electronic switch 21, where the first electronic switch 21 may be turned on when receiving a first detection signal with a high level, at this time, the electrical connection between the power source and the working device may be turned on, the working device may work normally, the first electronic switch 21 is turned off when receiving a second detection signal with a low level, at this time, the electrical connection between the power source and the working device is turned off, and the working device stops working. The electrical connection between the power source and the operating device can thus be controlled by the switching circuit 20 formed by the first electronic switch 21.

In one embodiment, the first electronic switch 21 is an intermediate relay.

In this embodiment, the first electronic switch 21 may be an intermediate relay, and the voltage and current bearing capability of the intermediate relay is high, which may be suitable for the case where the power supply voltage is high. The first electronic switch 21 can also adopt switching devices such as MOS tubes, and the MOS tubes have shorter switching delay and response time, so that rapid switching operation can be realized; however, the MOS transistor has low voltage and current bearing capability, and cannot be applied to a working device with a large working voltage. The specific configuration of the first electronic switch 21 in the switch circuit 20 can be determined according to the operating voltage of the operating device and the user's requirements in practical applications.

Referring to fig. 2, in an embodiment, the switching circuit 20 further includes:

the power input end of the second electronic switch 22 is used for accessing a power supply, the controlled end of the second electronic switch 22 is connected with the output end of the protection detector 10, the output end of the second electronic switch 22 is connected with the controlled end of the first electronic switch 21, the second electronic switch 22 is used for conducting the electric connection between the power supply and the controlled end of the first electronic switch 21 according to the first detection signal, and the second electronic switch 22 is used for disconnecting the electric connection between the power supply and the controlled end of the first electronic switch 21 according to the second detection signal.

In this embodiment, the switching circuit 20 may be provided with a second electronic switch 22 in addition to the first electronic switch 21 in the above-described embodiment, and the on and off of the first electronic switch 21 may be controlled by the second electronic switch 22. For example, when receiving the first detection signal with a high level, the second electronic switch 22 is turned on, and outputs the high-level electrical signal to the first electronic switch 21, so that the first electronic switch 21 is turned on; or the second detection signal of the low level is received, the second electronic switch 22 is turned off, the controlled end of the first electronic switch 21 receives the low level, and at this time, the first electronic switch 21 is turned off.

It should be noted that, the first electronic switch 21 and the second electronic switch 22 may be configured to accommodate different operating voltages. For example, in the case that the power supply is 24V and the operating voltage of the protection detector 10 is 5V, the first electronic switch 21 with 24V and the second electronic switch 22 with 3V to 60V are adopted, so that the first electronic switch 21 is connected to the power supply, and the second electronic switch 22 is connected to the protection detector 10, so that the switch circuit 20 can work normally. The relays in the switching circuit 20 can be selected according to the actual supply voltage and the operating voltage of the guard detector 10. Other switching devices may also be employed.

In one embodiment, the second electronic switch 22 is a solid state relay.

In this embodiment, the second electronic switch 22 may be a solid state relay, and since the second electronic switch 22 is connected to the guard detector 10, a solid state relay with an operating voltage of 3V to 60V is used, and the method can be applied to a case where the operating voltage of the guard detector 10 is 5V. The solid state relay corresponding to the operating voltage range may also be selected according to the operating voltage of the guard detector 10 to ensure that the devices of the switching circuit 20 can operate normally.

In one embodiment, the guard detector 10 includes:

the detection interface is used for connecting the protective appliance;

the input end of the voltage detection circuit is connected with the detection interface, and the voltage detection circuit is used for detecting the output voltage of the protection device, outputting a first detection signal to the switch circuit 20 when detecting that the protection device is connected according to the output voltage of the protection device, and outputting a second detection signal to the switch circuit 20 when detecting that the protection device is not connected according to the output voltage of the protection device.

In this embodiment, the shape of the detection interface can be set according to the connector of the protection apparatus, so that the protection apparatus can be inserted into the detection interface to form good electrical connection with the protection detector 10, so that static electricity in the protection apparatus can be output to the protection detector 10, and the accuracy of the detection result of the protection detector 10 is ensured. The voltage detection circuit can be composed of a controller with an analog-to-digital conversion module, and can also be composed of a voltage division circuit, and can be specifically set according to the requirements of users. The voltage detection circuit can detect the output voltage of the protective appliance. Specifically, the analog-to-digital conversion module provided in the controller converts the analog electrical signal output by the protection device into a digital signal, obtains a corresponding voltage value, and outputs a corresponding electrical signal, i.e. a first detection signal or a second detection signal, to the switch circuit 20. The voltage division circuit may be used to divide the voltage and output the electric signal to the switching circuit 20. For example, if the protection device is connected to the protection detector 10 normally, the voltage detection circuit may detect a higher voltage, so as to output a high-level electrical signal, i.e. the first detection signal, to the switch circuit 20, and if the protection device is not connected to the protection detector 10 normally, or is not connected, the voltage detection circuit may detect a lower voltage, so as to output a low-level electrical signal, i.e. the second detection signal, to the switch circuit 20.

In one embodiment, the guard detector 10 further comprises:

In this embodiment, the prompting circuit may prompt the staff in a manner of lighting, flashing or buzzing, etc., and the first detection signal or the second detection signal output by the voltage detection circuit may represent the connection condition of the protection apparatus and the protection detector 10. For example, when the voltage detection circuit outputs the first detection signal with a high level, the protection device is normally connected to the protection detector 10, and the voltage detection circuit can control the prompting circuit to be not operated, or change the lighting color or the flashing frequency of the prompting circuit. When the voltage detection circuit outputs the second detection signal with low level, the protection device is not normally connected with the protection detector 10, or is not connected, and at the moment, the voltage detection circuit can control the prompt circuit to work so as to prompt a worker, or the specific prompt mode of the prompt circuit for changing the lighting color or the flickering frequency of the prompt circuit can be set according to the actual situation and the user requirement.

In one embodiment, the prompting circuit includes at least one LED light.

In this embodiment, the prompting circuit may be configured by one LED lamp, or may be configured by two or more LED lamps. For example, when the prompt circuit is formed by one LED lamp, the voltage detection circuit can control the LED lamp to light up when detecting that the protective device is not connected to prompt a worker to check the wearing and connection condition of the protective device, and control the LED lamp to light off when detecting that the protective device is normally connected to the worker. When the two LED lamps form a prompting circuit, the LED lamps of the two color lamp beads can be selected, such as red and green; the voltage detection circuit controls the red LED lamp to light when detecting that the protective device is not connected to prompt a worker to check the wearing and connection condition of the protective device, and controls the green LED lamp to light when detecting that the protective device is normally connected to indicate that the connection is normal. The prompting circuit can also be formed by a plurality of LED lamps, and the specific on-off mode and the color of the LED lamps can be set according to the requirements of users.

In an embodiment, the switch control device further includes:

and the output end of the power supply circuit is connected with the power supply input end of the switch circuit 20, and the power supply circuit is used for providing working voltage for the switch circuit 20.

In this embodiment, the power supply circuit may be formed by a power supply chip, and the power supply chip converts an external power supply and outputs the converted power to the switching circuit 20 to supply power to the switching circuit 20. The relay can also be an AC-DC circuit which is connected with an alternating current power grid to convert alternating current of the power grid into direct current to supply power for the relay. The specific structure of the power supply circuit and the output voltage can be set according to the actual situation of the switch circuit 20, so that a proper working voltage can be provided for the switch circuit 20, the whole normal operation of the switch control device can be ensured, and the damage of devices caused by the fact that switching devices in the switch circuit 20 receive higher working voltages can be avoided.

In an embodiment, the switch control device may further include a housing, the housing is formed with a receiving cavity, a circuit board is received in the housing, the switch circuit 20 is disposed on the circuit board, and the protection detector 10 is disposed on the housing.

In this embodiment, the housing may be used to fix the positional relationship between the circuit board and the protection detector 10, so as to ensure the safety and stability of the interior of the accommodating cavity formed by the housing of the switch control device, and when the switch control device works, the positional relationship of the circuit board will not change, and external air or objects will not fall on the circuit board, so as to affect the work of the switch circuit 20 on the circuit board. The protection detector 10 is arranged on the shell, so that a protection appliance can be conveniently connected in, and when the prompt circuit arranged on the protection detector 10 in the embodiment adopts an LED lamp, a worker can conveniently observe the specific condition of the LED lamp.

The utility model also provides an electrostatic protection system, which comprises a protection appliance, working equipment and the switch control device, wherein the protection appliance is connected with the protection detector 10 in the switch control device, and the working equipment is electrically connected with the switch circuit 20 in the switch control device. The specific structure of the switch control device refers to the above embodiments, and because the electrostatic protection system adopts all the technical solutions of all the embodiments, the switch control device at least has all the beneficial effects brought by the technical solutions of the embodiments, and the detailed description is omitted herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A switch control device applied to an electrostatic protection system including a protection appliance and a working device, comprising:

2. The switch control device of claim 1, wherein the switch circuit comprises:

3. The switch control device of claim 2, wherein the first electronic switch is an intermediate relay.

4. The switch control device of claim 2, wherein the switch circuit further comprises:

5. The switch control of claim 4 wherein said second electronic switch is a solid state relay.

6. The switch control device of claim 1, wherein the guard detector comprises:

the detection interface is used for connecting the protective appliance;

7. The switch control device of claim 6, wherein the guard detector further comprises:

8. The switch control of claim 7 wherein said alert circuit comprises at least one LED light.

9. The switch control device according to any one of claims 1 to 8, characterized in that the switch control device further comprises:

10. An electrostatic protection system comprising a protection device, a working apparatus and a switch control device according to any one of claims 1-9, wherein the protection device is connected to a protection detector in the switch control device, and the working apparatus is electrically connected to a switching circuit in the switch control device.