CN2859557Y - Antistatic hand-loop self-checking unit - Google Patents
Antistatic hand-loop self-checking unit Download PDFInfo
- Publication number
- CN2859557Y CN2859557Y CN 200520140420 CN200520140420U CN2859557Y CN 2859557 Y CN2859557 Y CN 2859557Y CN 200520140420 CN200520140420 CN 200520140420 CN 200520140420 U CN200520140420 U CN 200520140420U CN 2859557 Y CN2859557 Y CN 2859557Y
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- resistance
- sheffer stroke
- stroke gate
- connector
- loop
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- Elimination Of Static Electricity (AREA)
Abstract
The utility model discloses an antistatic hand-loop self-checking unit comprising a power source, a connector, a detection circuit and an alarming apparatus, Two ends of the connector respectively connect with two ends of the power source. The anode of the power source connects with the input end of the detection circuit and the output end of the detection circuit connects with the input end of the alarming apparatus. After the electric hand-loop connects with the connector, the metal electric board of the electric hand-loop connects with the connector through the connecting lines. The connector connects with the grounding busbar by the grounding line. The detection circuit is used for detecting the connecting state of electric hand-loop. When the connecting lines break off, it will send the alarming signals immediately. The utility model can discover the disconnection fault of the antistatic hand-loop and make the change in time, which avoids the discard of micro-electronic product. The circuit of the utility model has advanced design, low power consumption, few applied devices and low cost. When the connecting lines of the electric hand-loop are drawout from the connector, it can cutt off power source automatically, which avoids the possible electrical energy waste.
Description
Technical field
The utility model is a kind of antistatic protection device that uses microelectronic component workshop operator, belongs to the technical field that electronic product is made.
Technical background
It is found that the today in that microelectric technique, VLSI (very large scale integrated circuit) develop rapidly, usually scraps owing to operating personnel's static electrification causes microelectronic product in the manufacturing shop.In order to eliminate the harm of static charge, the method that generally adopts is to wear a bracelet that metal electrode is housed to operating personnel's hand at present, and conductive electrode is connected with ground strap by lead, will be by the ground strap the earth of releasing rapidly when static charge produces.After but the electrostatic prevention bracelet used certain hour, the copper wire of its ground wire inside will fracture unconsciously, and the leakage path of static charge is interrupted, and caused product to scrap in a large number.For this reason, must develop a kind of supervising device,, send alerting signal immediately, inform the earth lead that operating personnel more renew immediately when in a single day the inner copper wire of bracelet ground wire fractures.
Summary of the invention
Goal of the invention of the present utility model provides a kind of can the automatic electrostatic prevention bracelet self-checking unit that detects of electrostatic prevention bracelet enforcement the fracture in case detect the ground wire of electrostatic prevention bracelet, send alerting signal immediately.
The utility model adopts following technical scheme:
A kind of electrostatic prevention bracelet self-checking unit, form by power supply, connector, testing circuit and alarm, the two ends of connector are connected with the two ends of power supply respectively, and the positive pole of power supply is connected with the testing circuit input end, and the testing circuit output terminal is connected with the input end of alarm.
Compared with prior art, the present invention has following advantage:
The utility model self-monitoring electrostatic prevention bracelet is made up of connector, testing circuit, sound light alarming circuit, power supply and power indicating circuit, and its structured flowchart as shown in Figure 1.After the conduction bracelet was connected on the connector of the present utility model, the metal on the conduction bracelet was connected with connector by connecting lead to the some plate; Connector is connected with ground strap by ground wire.Testing circuit is used for detecting the state that the conduction bracelet connects, if connecting line breaks, then sends alerting signal immediately.Sound light alarming circuit is transformed to red light indication and audible alarm simultaneously with alerting signal.Power supply of the present utility model is made up of two joint 1.5V No.5 cells, does the state indication with green luminotron.In order to save the luminotron energy consumption, designed multi-resonant oscillating circuit and made luminotron periodically luminous, with continuous luminous comparing, can save energy consumption more than 60%.Concrete technique effect of the present utility model is as follows:
A, employing the utility model device can in time be found electrostatic prevention bracelet disconnection fault, in time change, and avoid scrapping of microelectronic product.
B, the utility model circuit design advanced person, energy consumption is extremely low; Application device is few, and is with low cost.
C, when the connecting line of conduction bracelet when from connector, extracting, have the function of cutting off the electricity supply automatically, avoided issuable waste of energy.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is an electrical schematic diagram of the present utility model.
Specific embodiments
A kind of electrostatic prevention bracelet self-checking unit, comprise alarm 3, also comprise power supply G, connector 1 and testing circuit 2, the two ends of connector 1 are connected with the two ends of power supply G respectively, the positive pole of power supply G is connected with testing circuit 2 input ends, and testing circuit 2 output terminals are connected with the input end of alarm 3.Above-mentioned connector 1 adopts socket XS, and testing circuit 2 is made up of resistance R 1, R2 and R3, capacitor C 1, Sheffer stroke gate U1A, and resistance R 1 is with after resistance R 2 is connected, and the other end of resistance R 1 is connected to positive source, and the other end of resistance R 2 is connected to the centre pin of socket XS; Resistance R 1 is connected to Sheffer stroke gate U1A1 pin input terminal with resistance R 2 connected nodes; The bipod of resistance R 3 is connected respectively to 2 pin input terminals and the 3 pin lead-out terminals of Sheffer stroke gate U1A; Capacitor C1 is connected between the 2 pin input terminals and signal ground SG of Sheffer stroke gate U1A.Above-mentioned power indicating circuit 4 is by resistance R 6, R7 and R8, capacitor C 1, diode D1, luminotron LED2, Sheffer stroke gate U3A by power supply G power supply, Sheffer stroke gate U4A forms, two input terminals of Sheffer stroke gate U3A are connected and two input terminals of Sheffer stroke gate U4A are connected and constitute two phase inverters respectively, Sheffer stroke gate U3A lead-out terminal is connected to the input terminal of Sheffer stroke gate U4A, resistance R 8, luminotron LED2, after capacitor C 2 is connected successively, resistance terminal is connected to the lead-out terminal of Sheffer stroke gate U4A, capacitance terminal is connected to the input terminal of Sheffer stroke gate U3A, resistance R 6 be attempted by between Sheffer stroke gate U3A input terminal and the lead-out terminal after resistance R 7 is connected; Diode D1 is attempted by resistance R 7 two ends, and its negative pole and Sheffer stroke gate U3A lead-out terminal join.
With reference to shown in Figure 2.Wherein XS is the socket part of connector, and testing circuit is made up of resistance R 1-R3, capacitor C1 and Sheffer stroke gate U1A.Resistance R 4 constitutes optical alarm circuit with luminotron LED1, and sound alarm circuit then is made up of resistance R 5, Sheffer stroke gate U2A, transistor V1 and loudspeaker B.Driving power of the present utility model is zinc-maganese dioxide dry cell G, and its duty is shown by luminotron LED2; The multi-resonant oscillating circuit of control LED2 light period is made up of resistance R 6-R8, capacitor C2, diode D1 and Sheffer stroke gate U3A, U4A.Provided the preferred typical model parameter of each components and parts among the figure.Four Sheffer stroke gate integrated devices are selected 74HC132 type cmos digital integrated circuit for use, and power consumption is very low; Provided typical application parameter among the resistance figure; Diode D1 selects for use 2CK9 and transistor V1 to select for use 3DG6 to provide typical application model.
During the utility model operate as normal, conduction bracelet connecting line plug insertion socket XS, then current-carrying plate is communicated with (through resistance R 9) with protection ground PE.Connect K switch, then 1 pin of Sheffer stroke gate U1A places low level, and output 3 is high level, so luminotron LED1 and loudspeaker B all do not work.The luminotron LED2 of power indicating circuit begins periodically glittering, represents working properly.When broken string took place the bracelet connecting line, then 1 pin of Sheffer stroke gate U1A placed high level in the use, and 3 pin output continuous oscillation signal makes luminotron LED1 and loudspeaker B send sound and light alarm immediately.Can work on behind the conduction bracelet connecting line that must more renew this moment.
Claims (3)
1, a kind of electrostatic prevention bracelet self-checking unit, comprise alarm (3), it is characterized in that also comprising power supply (G), connector (1) and testing circuit (2), the two ends of connector (1) are connected with the two ends of power supply (G) respectively, the positive pole of power supply (G) is connected with testing circuit (2) input end, and testing circuit (2) output terminal is connected with the input end of alarm (3).
2, electrostatic prevention bracelet self-checking unit according to claim 1, it is characterized in that connector (1) adopts socket (XS), testing circuit (2) is made up of resistance (R1, R2 and R3), electric capacity (C1), Sheffer stroke gate (U1A), resistance (R1) is with after resistance (R2) is connected, the other end of resistance (R1) is connected to positive source, and the other end of resistance (R2) is connected to the centre pin of socket (XS); Resistance (R1) is connected to Sheffer stroke gate (U1A) 1 pin input terminal with resistance (R2) connected node; The bipod of resistance (R3) is connected respectively to 2 pin input terminals and the 3 pin lead-out terminals of Sheffer stroke gate U1A; Capacitor (C1) is connected between the 2 pin input terminals and signal ground (SG) of Sheffer stroke gate (U1A).
3, electrostatic prevention bracelet self-checking unit according to claim 1, it is characterized in that power indicating circuit (4) is by resistance (R6, R7 and R8), electric capacity (C1), diode (D1), luminotron (LED2), Sheffer stroke gate (U3A) by power supply (G) power supply, Sheffer stroke gate (U4A) is formed, two input terminals of Sheffer stroke gate (U3A) are connected and two input terminals of Sheffer stroke gate (U4A) are connected and constitute two phase inverters respectively, Sheffer stroke gate (U3A) lead-out terminal is connected to the input terminal of Sheffer stroke gate (U4A), resistance (R8), luminotron (LED2), after electric capacity (C2) is connected successively, resistance terminal is connected to the lead-out terminal of Sheffer stroke gate (U4A), capacitance terminal is connected to the input terminal of Sheffer stroke gate (U3A), resistance (R6) be attempted by between Sheffer stroke gate (U3A) input terminal and the lead-out terminal after resistance (R7) is connected; Diode (D1) is attempted by resistance (R7) two ends, and its negative pole and Sheffer stroke gate (U3A) lead-out terminal joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140420 CN2859557Y (en) | 2005-12-30 | 2005-12-30 | Antistatic hand-loop self-checking unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140420 CN2859557Y (en) | 2005-12-30 | 2005-12-30 | Antistatic hand-loop self-checking unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859557Y true CN2859557Y (en) | 2007-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520140420 Expired - Fee Related CN2859557Y (en) | 2005-12-30 | 2005-12-30 | Antistatic hand-loop self-checking unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859557Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798771A (en) * | 2011-05-27 | 2012-11-28 | 神讯电脑(昆山)有限公司 | Portable antistatic alarm |
| CN103559772A (en) * | 2013-11-22 | 2014-02-05 | 太仓市同维电子有限公司 | Method for automatic control over antistatic wrist strap alarm |
| CN109116783A (en) * | 2018-09-19 | 2019-01-01 | 索尔思光电（成都）有限公司 | A kind of anti-electrostatic wrist ring monitor |
-
2005
- 2005-12-30 CN CN 200520140420 patent/CN2859557Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798771A (en) * | 2011-05-27 | 2012-11-28 | 神讯电脑(昆山)有限公司 | Portable antistatic alarm |
| CN103559772A (en) * | 2013-11-22 | 2014-02-05 | 太仓市同维电子有限公司 | Method for automatic control over antistatic wrist strap alarm |
| CN109116783A (en) * | 2018-09-19 | 2019-01-01 | 索尔思光电（成都）有限公司 | A kind of anti-electrostatic wrist ring monitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |