Static elimination device for integrated circuit

Abstract

The utility model relates to an integrated circuit static electricity elimination device which comprises a static electricity elimination device and a static electricity detection circuit board. The static electricity eliminating device comprises a centrifugal fan and a positive and negative ion generator, and static electricity types comprise positive static electricity and negative static electricity; during use, the positive and negative ion generator generates positive ions and negative ions, and the centrifugal fan blows the positive ions and the negative ions to an integrated circuit to be subjected to static elimination to neutralize static electricity on the integrated circuit; the static elimination circuit eliminates static electricity on the static elimination device to avoid static interference, and the static detection circuit board detects the static type on the integrated circuit when approaching the integrated circuit to realize static detection; therefore, the centrifugal fan and the positive and negative ion generator are matched to carry out one-time static elimination on a plurality of integrated circuits on the circuit board, the structure is simple, the circuit is simple, the working efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits and structures of chip electrostatic elimination devices, and more specifically, to an integrated circuit electrostatic elimination device. Background Art

[0002] Most of the existing integrated circuit electrostatic eliminations use ion guns to blow the integrated circuits to neutralize the positive or negative static electricity on the integrated circuits. However, when the integrated circuits are pasted / soldered onto the circuit board and electrostatic elimination is performed on multiple integrated circuits on the entire circuit board, using a gun to blow has low efficiency and cannot only blow the integrated circuits on the circuit board for electrostatic elimination, so it can no longer meet people's usage requirements. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an integrated circuit electrostatic elimination device with a simple circuit, simple structure, low cost, small volume, and high working efficiency in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] Construct an integrated circuit electrostatic elimination device, including an electrostatic elimination device and an electrostatic detection circuit board; wherein, the electrostatic elimination device includes: a centrifugal fan and a positive and negative ion generator, the positive and negative ion generator emits positive ions and negative ions, and the centrifugal fan blows the positive ions and the negative ions onto the integrated circuit to be subjected to electrostatic elimination to neutralize the static electricity on the integrated circuit;

[0006] The electrostatic detection circuit is provided on the electrostatic detection circuit board, and the electrostatic detection circuit board detects the type of static electricity on the integrated circuit when it is close to the integrated circuit, and the type of static electricity includes: positive static electricity and negative static electricity;

[0007] It further includes: an electrostatic elimination circuit, and the electrostatic elimination circuit eliminates the static electricity on the electrostatic elimination device.

[0008] For the integrated circuit electrostatic elimination device of the utility model, wherein, the electrostatic elimination device further includes: a bell mouth; the ion emission head of the positive and negative ion generator is arranged in the air duct, one end of the air duct is fixedly connected to the air outlet of the centrifugal fan and the other end is fixedly connected to the air inlet of the bell mouth;

[0009] The centrifugal fan and the positive and negative ion generator are both powered by a 220V AC power supply, and the 220V AC power supply is connected to a surge protector.

[0010] For the integrated circuit electrostatic elimination device of the utility model, wherein, the housing of the centrifugal fan, the air duct and the bell mouth are all made of metal conductive materials and are electrically conductive to each other.

[0011] For the integrated circuit electrostatic elimination device described in the present utility model, wherein the electrostatic elimination circuit includes: a bidirectional electrostatic protection diode and a first resistor;

[0012] Both the bidirectional electrostatic protection diode and the first resistor are connected to the bell mouth and the other ends are both grounded.

[0013] For the integrated circuit electrostatic elimination device described in the present utility model, wherein the electrostatic elimination circuit further includes: a battery pack, a single-chip microcomputer, a first light-emitting diode, and a second light-emitting diode;

[0014] The VCC terminal of the single-chip microcomputer is connected to the positive electrode of the battery pack, the GND terminal is connected to the negative electrode of the battery pack and grounded, the VCC terminal of the single-chip microcomputer is also connected to the negative electrode of the electrostatic protection diode and a capacitor, and the positive electrode of the electrostatic protection diode and the other end of the capacitor are both grounded;

[0015] The PA1 terminal of the single-chip microcomputer is connected to the bell mouth, the PA3 terminal of the single-chip microcomputer is connected with a second resistor, and the PA4 terminal is connected with a third resistor. The positive electrode of the first light-emitting diode is connected to the other end of the second resistor, the positive electrode of the second light-emitting diode is connected to the other end of the third resistor, and the negative electrodes of the first light-emitting diode and the second light-emitting diode are both grounded.

[0016] For the integrated circuit electrostatic elimination device described in the present utility model, wherein the battery pack is formed by connecting two 1.5V dry batteries in series.

[0017] For the integrated circuit electrostatic elimination device described in the present utility model, wherein the electrostatic detection circuit includes: a first field-effect transistor, a second field-effect transistor, a third light-emitting diode, and a fourth light-emitting diode; the first field-effect transistor is an N-channel field-effect transistor, and the second field-effect transistor is a P-channel field-effect transistor;

[0018] The gate of the first field-effect transistor is connected to the first copper-clad patch, the gate of the second field-effect transistor is connected to the second copper-clad patch, and the drain of the first field-effect transistor and the source of the second field-effect transistor are both connected to the positive electrode of the battery pack; the source of the first field-effect transistor is connected to the positive electrode of the third light-emitting diode, and the negative electrode of the third light-emitting diode is connected to the fourth resistor; the drain of the second field-effect transistor is connected to the positive electrode of the fourth light-emitting diode, and the negative electrode of the fourth light-emitting diode is connected to the fifth resistor, and the other ends of the fourth resistor and the fifth resistor are both grounded;

[0019] When the first copper-clad patch approaches the integrated circuit with positive static electricity, the third light-emitting diode lights up; when the second copper-clad patch approaches the integrated circuit with negative static electricity, the fourth light-emitting diode lights up.

[0020] In the integrated circuit electrostatic elimination device of the present utility model, the gate of the first field effect transistor is connected to a first momentary switch, and the other end of the first momentary switch is grounded; the gate of the second field effect transistor is connected to a second momentary switch, and the other end of the second momentary switch is connected to the positive electrode of the battery pack.

[0021] In the integrated circuit electrostatic elimination device of the present utility model, an insulating net is fixedly connected to the end face of the air outlet of the bell mouth, and the integrated circuit is placed on the insulating net.

[0022] In the integrated circuit electrostatic elimination device of the present utility model, the electrostatic elimination device is placed in a metal sealed cabinet and fixedly connected to the metal sealed cabinet. The end face of the bell mouth passes through the top surface of the metal sealed cabinet and is flush with the top surface of the metal sealed cabinet, and the end face of the bell mouth is horizontally arranged;

[0023] An air inlet is provided on the metal sealed cabinet, and an air filter element is provided in the air inlet. The air filter element is fixedly connected to the metal sealed cabinet.

[0024] The beneficial effects of the present utility model are as follows: When in use, the positive and negative ion generator emits positive ions and negative ions, and the centrifugal fan blows the positive ions and negative ions onto the integrated circuit to be subjected to electrostatic elimination to neutralize the static electricity on the integrated circuit; the electrostatic elimination circuit eliminates the static electricity on the electrostatic elimination device to avoid static interference. The static electricity detection circuit board detects the type of static electricity on the integrated circuit when it is close to the integrated circuit, realizing static electricity detection; thus, it is possible to perform one-time electrostatic elimination on multiple integrated circuits on the circuit board by using the cooperation of the centrifugal fan and the positive and negative ion generator, and the structure is simple, the circuit is simple, the working efficiency is high, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0026] Figure 1 is a three-dimensional view of the integrated circuit electrostatic elimination device of the preferred embodiment of the present utility model;

[0027] Figure 2 is a three-dimensional view of the metal sealed cabinet of the integrated circuit electrostatic elimination device of the preferred embodiment of the present utility model;

[0028] Figure 3It is the circuit schematic diagram of the static electricity elimination circuit of the integrated circuit static electricity elimination device in the preferred embodiment of the present invention;

[0029] Figure 4 It is the circuit schematic diagram of the static electricity detection circuit of the integrated circuit static electricity elimination device in the preferred embodiment of the present invention. Specific embodiments

[0030] In order to make the objectives, 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. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] The integrated circuit static electricity elimination device in the preferred embodiment of the present invention is as Figure 1 shown, and also refer to Figures 2 to 4 ; It includes a static electricity elimination device 100 and a static electricity detection circuit 200 board (not shown in the figure); among them, the static electricity elimination device 100 includes: a centrifugal fan 110 and a positive and negative ion generator (not shown in the figure). The positive and negative ion generator emits positive ions and negative ions, and the centrifugal fan 110 blows the positive ions and negative ions onto the integrated circuit (not shown in the figure) to be subjected to static electricity elimination to neutralize the static electricity on the integrated circuit;

[0032] The static electricity detection circuit 200 board is provided with a static electricity detection circuit 200. When the static electricity detection circuit 200 board is close to the integrated circuit, it detects the type of static electricity on the integrated circuit. The types of static electricity include: positive static electricity and negative static electricity; to detect whether there is still static electricity on the integrated circuit;

[0033] It also includes: a static electricity elimination circuit 300, and the static electricity elimination circuit 300 eliminates the static electricity on the static electricity elimination device 100;

[0034] During use, the positive and negative ion generator emits positive ions and negative ions, and the centrifugal fan 110 blows the positive ions and negative ions onto the integrated circuit to be subjected to static electricity elimination to neutralize the static electricity on the integrated circuit; the static electricity elimination circuit 300 eliminates the static electricity on the static electricity elimination device 100 to avoid static electricity interference. When the static electricity detection circuit 200 board is close to the integrated circuit, it detects the type of static electricity on the integrated circuit to achieve static electricity detection; thus, it realizes a single static electricity elimination for multiple integrated circuits on the circuit board by using the cooperation of the centrifugal fan 110 and the positive and negative ion generator, and has a simple structure, a simple circuit, high working efficiency, and low cost.

[0035] Such as Figure 1As shown, the static eliminator 100 further includes: a flared opening 120; the ion emission head of the positive and negative ion generator is disposed in the air duct 130, one end of the air duct 130 is fixedly connected to the air outlet of the centrifugal fan 110 and the other end is fixedly connected to the air inlet 210 of the flared opening 120; it has a simple structure and low cost;

[0036] Both the centrifugal fan 110 and the positive and negative ion generator are powered by a 220V AC power supply, and the 220V AC power supply is connected to a surge protector; for surge protection.

[0037] As Figure 1 shown, the housing of the centrifugal fan 110, the air duct 130, and the flared opening 120 are all made of metal conductive materials and are electrically conductive to each other; facilitating the static eliminator circuit 300 to eliminate static electricity.

[0038] As Figure 3 shown, the static eliminator circuit 300 includes: bidirectional static protection diodes D2D3 and a first resistor R1;

[0039] Both the bidirectional static protection diodes D2D3 and the first resistor R1 are connected to the flared opening 120 and the other ends are grounded; among them, whether to select the first resistor R1 is judged according to the grounding (grounding to the earth) situation.

[0040] As Figure 3 shown, the static eliminator circuit 300 further includes: a battery pack BT1, a single-chip microcomputer U6, a first light-emitting diode LED2, and a second light-emitting diode LED1;

[0041] The VCC terminal of the single-chip microcomputer U6 is connected to the positive electrode of the battery pack BT1, the GND terminal is connected to the negative electrode of the battery pack BT1 and grounded, the VCC terminal of the single-chip microcomputer U6 is also connected to the negative electrode of the static protection diode D2 and a capacitor C7, and the positive electrode of the static protection diode D2 and the other end of the capacitor C7 are both grounded;

[0042] The PA1 terminal of the single-chip microcomputer U6 is connected to the flared opening 120, the PA3 terminal of the single-chip microcomputer U6 is connected to a second resistor R3 and the PA4 terminal is connected to a third resistor R2, the positive electrode of the first light-emitting diode LED2 is connected to the other end of the second resistor R3, the positive electrode of the second light-emitting diode LED1 is connected to the other end of the third resistor R2, and the negative electrodes of the first light-emitting diode LED2 and the second light-emitting diode LED1 are both grounded; among them, the first light-emitting diode LED2 and the second light-emitting diode LED1 are used to alternately flash to indicate whether there is static electricity.

[0043] As Figure 3 shown, the battery pack BT1 is composed of two 1.5V dry batteries connected in series; due to low power consumption, two 1.5V dry batteries are connected in series for power supply to reduce costs; or a 220V AC to 3V DC power supply is used for power supply to meet different usage requirements for maintenance-free power supply.

[0044] As Figure 4 shown, the electrostatic detection circuit 200 includes: a first field effect transistor Q1, a second field effect transistor U1, a third light emitting diode LED3, and a fourth light emitting diode LED4; the first field effect transistor Q1 is an N-channel field effect transistor, and the second field effect transistor U1 is a P-channel field effect transistor;

[0045] The gate of the first field effect transistor Q1 is connected to a first copper pour (not shown in the figure), the gate of the second field effect transistor U1 is connected to a second copper pour (not shown in the figure), and the drain of the first field effect transistor Q1 and the source of the second field effect transistor U1 are both connected to the positive electrode of the battery pack BT1; the source of the first field effect transistor Q1 is connected to the positive electrode of the third light emitting diode LED3, and the negative electrode of the third light emitting diode LED3 is connected to the fourth resistor R4; the drain of the second field effect transistor U1 is connected to the positive electrode of the fourth light emitting diode LED4, the negative electrode of the fourth light emitting diode LED4 is connected to the fifth resistor R5, and the other ends of the fourth resistor R4 and the fifth resistor R5 are both grounded;

[0046] When the first copper pour approaches an integrated circuit with positive static electricity, the third light emitting diode LED3 lights up, and when the second copper pour approaches an integrated circuit with negative static electricity, the fourth light emitting diode LED4 lights up; the circuit is simple and the cost is low.

[0047] As Figure 4 shown, the gate of the first field effect transistor Q1 is connected to a first momentary switch H4, and the other end of the first momentary switch H4 is grounded; the gate of the second field effect transistor U1 is connected to a second momentary switch H5, and the other end of the second momentary switch H5 is connected to the positive electrode of the battery pack BT1; both the first momentary switch H4 and the second momentary switch H5 are used for resetting.

[0048] As Figure 1 and Figure 2 shown, an insulating net 121 is fixedly connected to the end surface of the air outlet of the bell mouth 120, and the integrated circuit is placed on the insulating net 121; the insulating net 121 is used to prevent the integrated circuit from being burned out due to the generation of an arc when grounding.

[0049] As Figure 2 shown, the electrostatic elimination device 100 is placed in the metal sealed cabinet 200 and fixedly connected to the metal sealed cabinet 200. The end surface of the bell mouth 120 passes through the top surface of the metal sealed cabinet 200 and is flush with the top surface of the metal sealed cabinet 200. The end surface of the bell mouth 120 is horizontally arranged; it is convenient to eliminate static electricity from the integrated circuit / printed circuit board and easy to take.

[0050] The metal sealed cabinet 200 is provided with an air inlet 210, and an air filter element 211 is arranged in the air inlet 210. The air filter element 211 is fixedly connected to the metal sealed cabinet 200; air filtration is carried out to block dust.

[0051] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of this utility model.

Claims

1. An integrated circuit static elimination device, comprising a static elimination device and a static detection circuit board; characterized in that: The static elimination device comprises: a centrifugal fan and a positive and negative ion generator, wherein the positive and negative ion generator emits positive ions and negative ions, and the centrifugal fan blows the positive ions and the negative ions onto the integrated circuit to be subjected to static elimination to neutralize the static electricity on the integrated circuit; The static electricity detection circuit board is provided with a static electricity detection circuit, and the static electricity detection circuit board detects the type of static electricity on the integrated circuit when it is close to the integrated circuit, and the static electricity type includes: positive static electricity and negative static electricity; It also includes: a static electricity elimination circuit, which eliminates static electricity on the static electricity elimination device.

2. The integrated circuit static elimination device according to claim 1, characterized in that: The static elimination device further comprises: a bell mouth; the ion emission head of the positive and negative ion generator is arranged in the air duct, one end of the air duct is fixedly connected to the air outlet of the centrifugal fan and the other end is fixedly connected to the air inlet of the bell mouth; The centrifugal fan and the positive and negative ion generators are both powered by a 220V AC power supply, and the 220V AC power supply is connected to a surge protector.

3. The integrated circuit static elimination device according to claim 2, characterized in that: The shell of the centrifugal fan, the air duct and the bell mouth are all made of metal conductive material and are conductive to each other.

4. The integrated circuit static elimination device according to claim 3, characterized in that: The static elimination circuit comprises: a bidirectional static protection diode and a first resistor; The bidirectional electrostatic protection diode and the first resistor are both connected to the bell mouth and the other ends thereof are both grounded.

5. The integrated circuit static elimination device according to claim 4, characterized in that: The static elimination circuit also includes: a battery pack, a single chip microcomputer, a first light emitting diode and a second light emitting diode; The VCC terminal of the single-chip microcomputer is connected to the positive electrode of the battery pack and the GND terminal is connected to the negative electrode of the battery pack and grounded. The VCC terminal of the single-chip microcomputer is also connected to the negative electrode of the electrostatic protection diode and the capacitor. The positive electrode of the electrostatic protection diode and the other end of the capacitor are both grounded. The PA1 end of the single-chip microcomputer is connected to the bell mouth, the PA3 end of the single-chip microcomputer is connected to the second resistor and the PA4 end is connected to the third resistor, the positive electrode of the first light-emitting diode is connected to the other end of the second resistor, the positive electrode of the second light-emitting diode is connected to the other end of the third resistor, and the cathode of the first light-emitting diode and the cathode of the second light-emitting diode are both grounded.

6. The integrated circuit static elimination device according to claim 5, characterized in that: The battery pack is formed by two 1.5V dry batteries connected in series.

7. The integrated circuit static elimination device according to claim 6, characterized in that: The static electricity detection circuit includes: a first field effect transistor, a second field effect transistor, a third light emitting diode, and a fourth light emitting diode; the first field effect transistor is an N-channel field effect transistor, and the second field effect transistor is a P-channel field effect transistor; The gate of the first field effect transistor is connected to the first copper sheet, the gate of the second field effect transistor is connected to the second copper sheet, the drain of the first field effect transistor and the source of the second field effect transistor are both connected to the positive electrode of the battery pack; the source of the first field effect transistor is connected to the positive electrode of the third light-emitting diode, and the negative electrode of the third light-emitting diode is connected to the fourth resistor; the drain of the second field effect transistor is connected to the positive electrode of the fourth light-emitting diode, and the negative electrode of the fourth light-emitting diode is connected to the fifth resistor, and the other ends of the fourth resistor and the fifth resistor are both grounded; When the first copper sheet approaches the integrated circuit with positive static electricity, the third light-emitting diode lights up, and when the second copper sheet approaches the integrated circuit with negative static electricity, the fourth light-emitting diode lights up.

8. The integrated circuit static elimination device according to claim 7, characterized in that: The gate of the first field effect tube is connected to a first momentary switch, and the other end of the first momentary switch is grounded; the gate of the second field effect tube is connected to a second momentary switch, and the other end of the second momentary switch is connected to the positive electrode of the battery pack.

9. The integrated circuit static elimination device according to claim 2, characterized in that: An insulating net is fixedly connected to the end surface of the air outlet of the bell mouth, and the integrated circuit is placed on the insulating net.

10. The integrated circuit static elimination device according to claim 2, characterized in that: The static elimination device is placed in a metal sealed cabinet and fixedly connected to the metal sealed cabinet, the end surface of the bell mouth passes through the top surface of the metal sealed cabinet and is flush with the top surface of the metal sealed cabinet, and the end surface of the bell mouth is horizontally arranged; The metal sealed cabinet is provided with an air inlet, an air filter element is arranged in the air inlet, and the air filter element is fixedly connected to the metal sealed cabinet.

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