CN104237717A - Electrostatic wrist strap monitoring instrument and electrostatic guiding-out system - Google Patents
Electrostatic wrist strap monitoring instrument and electrostatic guiding-out system Download PDFInfo
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- CN104237717A CN104237717A CN201310237677.2A CN201310237677A CN104237717A CN 104237717 A CN104237717 A CN 104237717A CN 201310237677 A CN201310237677 A CN 201310237677A CN 104237717 A CN104237717 A CN 104237717A
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- 238000009434 installation Methods 0.000 description 2
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Abstract
The invention discloses an electrostatic wrist strap monitoring instrument. The first end of a sampling resistor is connected to a power supply through a power source node, and the other end of the sampling resistor is connected to a second interface of an electrostatic wrist strap; a processing circuit collects a voltage value of the second end of the sampling resistor, and when the collected voltage value is larger than a voltage threshold value, an alarm control signal is output; an alarm device responds to an alarm control signal to carry out alarm operation. On the basis of the electrostatic wrist strap monitoring instrument, when a user does not wear the electrostatic wrist strap or the user does not correctly wear the electrostatic wrist strap, and a first contact and a second contact are not in full contact with a human body, or a cable in the electrostatic wrist strap is broken or a cable between the electrostatic wrist strap and the ground is broken, a current path between the power supply and the ground is broken. When the voltage value of the second end of the sampling resistor is larger than the voltage threshold value, the alarm device performs the alarm operation, a worker is reminded to handle an exception, and therefore it is ensured that static electricity on the human body is effectively discharged to the ground. The invention further discloses an electrostatic guiding-out system.
Description
Technical field
The present invention relates to electrostatic defending technical field, particularly relate to electrostatic hand ring monitor and electrostatic guiding system.
Background technology
In electron trade, in order to ensure the reliability of electron device in the courses of work such as production, debugging, installation, electrostatic defending technical measures must be taked at links to it, to ensure the quality of product.Human body is in motion process, and health contacts with the object such as floor, clothing or rubs, and can produce electrostatic at human body.Require that staff wears electrostatic hand ring in electron trade more at present, by electrostatic hand ring by human body access the earth, namely between human body and the earth, set up electrostatic leakage passage, thus derive the electrostatic of human body generation.
The main body of electrostatic hand ring adopts isolation material to make, first resistance and the second resistance are set in the inside of main body, one end of first resistance is connected to first interface by cable, the other end of the first resistance is connected to the first contact by cable, one end of second resistance is connected to the second interface by cable, the other end of the second resistance is connected to the second contact by cable, and first interface and the second interface are connected to earth terminal by cable.When staff correctly wears electrostatic hand ring, human body and the first contact and the second contact, namely the first contact and the second contact are by human body conducting, and the electrostatic of human body imports the earth by the first resistance and the second resistance.
But, in production engineering, staff forgets and wears electrostatic hand ring, wears cable that is incorrect, electrostatic hand ring and rupture, or the situation that fracture occurs the cable between electrostatic hand ring and earth terminal happens occasionally, cause the electrostatic of human body cannot effectively release to greatly, thus serious infringement is caused to product.
Therefore, how monitoring the duty of electrostatic hand ring, thus ensure that static electricity on human body effectively releases to greatly, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of electrostatic hand ring monitor, in order to monitor the duty of electrostatic hand ring, ensure that static electricity on human body effectively releases to greatly.Meanwhile, the present invention also provides a kind of electrostatic guiding system.
For achieving the above object, the invention provides following technical scheme:
The invention discloses a kind of electrostatic hand ring monitor, for monitoring the duty of electrostatic hand ring, described electrostatic hand ring comprises the first contact, the second contact, first interface and the second interface, described first contact and described second contact are by human body conducting, described first interface is connected with described first contact, described second interface is connected with described second contact, and the first interface of described electrostatic hand ring is connected to the earth by cable, and described monitor comprises:
Sample resistance, second interface that first end is connected to power supply node, the second end is connected to described electrostatic hand ring of described sample resistance, described power supply node is connected to power supply;
Treatment circuit, the voltage signal acquisition port of described treatment circuit is connected to the second end of described sample resistance, and described treatment circuit gathers the magnitude of voltage at the second end place of described sample resistance, and when described magnitude of voltage is greater than voltage threshold output alarm control signal;
Be connected with the output port of described treatment circuit, respond the warning device that described alarm control signal carries out alarm operation.
Preferably, in above-mentioned electrostatic hand ring monitor, the power end of described treatment circuit is connected to described power supply node.
Preferably, in above-mentioned electrostatic hand ring monitor, described warning device comprises light warning module.
Preferably, in above-mentioned electrostatic hand ring monitor, described light warning module comprises the first switching tube, second switch pipe, the first light emitting diode and the second light emitting diode;
The control end of described first switching tube is connected to the first output port of described treatment circuit by the second resistance, the first end of described first switching tube is connected to described power supply node by the 3rd resistance, the second end ground connection of described first switching tube;
The control end of described second switch pipe is connected to the first end of described first switching tube by the 4th resistance, the first end of described second switch pipe is connected to described power supply node by the 5th resistance, the second end ground connection of described second switch pipe;
The first end that the anode of described first light emitting diode is connected to described power supply node by the 6th resistance, negative electrode is connected to described second switch pipe;
The anode of described second light emitting diode is by described 6th resistance is connected to described power supply node, negative electrode is connected to described first switching tube first end.
Preferably, in above-mentioned electrostatic hand ring monitor, described warning device comprises buzzer warning module, and described buzzer warning module comprises hummer and the 3rd switching tube;
The control end of described 3rd switching tube is connected to the second output port of described treatment circuit by the 7th resistance, second end ground connection of described 3rd switching tube, the first end of described 3rd switch connects the negative terminal of hummer, and the anode of described hummer is connected to described power supply node.
Preferably, above-mentioned electrostatic hand ring monitor also comprises the communicating circuit be connected with described treatment circuit, and the power end of described communicating circuit is connected to described power supply node.
Preferably, in above-mentioned electrostatic hand ring monitor, described treatment circuit comprises:
Input end is connected to the second end of described sample resistance, obtains the magnitude of voltage at the second end place of described sample resistance and described magnitude of voltage is converted to the analog to digital conversion circuit of digital signal;
Be connected with the output terminal of analog-digital conversion circuit as described, the single-chip microcomputer of output alarm control signal when the magnitude of voltage that described digital signal characterizes is greater than voltage threshold.
Preferably, in above-mentioned electrostatic hand ring monitor, described treatment circuit comprises:
PIC12F675 type single-chip microcomputer;
The 8th resistance that one end is connected to the second end of described sampling resistor, the other end is connected to the RA0 port of described PIC12F675 type single-chip microcomputer.
Preferably, above-mentioned electrostatic hand ring monitor also comprises the first switch be arranged between described power supply node and described power supply, and the earth terminal of described electrostatic hand ring monitor is connected to the earth by second switch.
On the other hand, the invention also discloses a kind of electrostatic guiding system, comprise electrostatic hand ring and above-mentioned any one electrostatic hand ring monitor disclosed, described electrostatic hand ring comprises the first contact, the second contact, first interface and the second interface, described first contact and described second contact are by human body conducting, described first interface is connected with described first contact, and described second interface is connected with described second contact, and the first interface of described electrostatic hand ring is connected to the earth by cable.
As can be seen here, beneficial effect of the present invention is: electrostatic hand ring monitor disclosed by the invention, second interface that first end is connected to power supply by power supply node, the other end is connected to electrostatic hand ring of sample resistance, treatment circuit gathers the magnitude of voltage at the second end place of this sample resistance, the output alarm control signal when the magnitude of voltage collected is greater than voltage threshold, warning device responds this alarm control signal and carries out alarm operation afterwards.Based on electrostatic hand ring monitor disclosed by the invention, when user does not wear electrostatic hand ring, or user does not correctly wear electrostatic hand ring when causing the first contact and the second contact all not to contact human body, or when there is fracture in the cable in electrostatic hand ring, or when the cable between electrostatic hand ring and the earth occurs to rupture, current path between power supply and the earth is disconnected, the magnitude of voltage at the second end place of sampling resistor is greater than voltage threshold, warning device carries out alarm operation, prompting staff processes exception, thus ensures that static electricity on human body effectively releases to greatly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention, simple introduction is done below by the accompanying drawing used required in embodiment, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of electrostatic hand ring monitor disclosed by the invention;
Fig. 2 is the principle of work schematic diagram of electrostatic hand ring;
Fig. 3 is the structural representation of another kind of electrostatic hand ring monitor disclosed by the invention;
Fig. 4 is the structural representation of another kind of electrostatic hand ring monitor disclosed by the invention;
Fig. 5 is the structural representation of another kind of electrostatic hand ring monitor disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making under creative work prerequisite, and the every other embodiment obtained, all belongs to scope.
The invention discloses a kind of electrostatic hand ring monitor, in order to monitor the duty of electrostatic hand ring, namely the wear condition of electrostatic hand ring and the state of cable are monitored, ensure that static electricity on human body effectively releases to greatly.
See the structural representation that Fig. 1, Fig. 1 are a kind of electrostatic hand ring monitor disclosed by the invention.This monitor comprises sample resistance R1, treatment circuit 1 and warning device 2.
Wherein:
The first end of sample resistance R1 is connected to power supply node Vcc, and second end of sample resistance R1 is connected to the second interface J2 of electrostatic hand ring, and power supply node Vcc is connected to power supply.The first interface J1 of electrostatic hand ring is connected to the earth by cable.
The voltage signal acquisition port for the treatment of circuit 1 is connected to second end of sample resistance R1, and treatment circuit 1 gathers the magnitude of voltage at the second end place of sample resistance R1, and when this magnitude of voltage is greater than voltage threshold output alarm control signal.
Warning device 2 is connected with the output port for the treatment of circuit 1, and the alarm control signal that response treatment circuit 1 exports carries out alarm operation.Warning device 2 can carry out photoelectricity prompting or auditory tone cues.
Below in conjunction with Fig. 2, the course of work of the monitor of electrostatic hand ring shown in Fig. 1 is described.
Fig. 2 shows the principle of work of electrostatic hand ring, the main body of electrostatic hand ring adopts insulating material to make, current-limiting resistance R001 and current-limiting resistance R002 is set in main body, current-limiting resistance R001 one end is connected to first interface J1 by cable, the other end is connected to the first contact M1 by cable, current-limiting resistance R002 one end is connected to the second interface J2 by cable, the other end is connected to the second contact M2 by cable.First interface J1 and the second interface J2 of electrostatic hand ring are used for being connected with external parts.In electrostatic hand ring, only have the first contact M1 and the second contact M2 be exposed, can with human contact.
In staff's course of work, the power supply node Vcc in monitor is connected to power supply, by cable, the first interface J1 of electrostatic hand ring is connected to the earth, second end of sample resistance R1 is connected to the second interface J2 of electrostatic hand ring.
When staff correctly wears electrostatic hand ring, cable in electrostatic hand ring does not rupture, and when the cable between electrostatic hand ring and the earth does not occur to rupture yet, between power supply and the earth, form path, path is: power supply-M2-human body-the first contact, sampling resistor R1-second interface J2-current-limiting resistance R002-second contact M1-current-limiting resistance R001-first interface J1-the earth.
Now, the resistance value R=R1+R001+R002+R in whole current path
connect, R1 is the resistance of sampling resistor R1 here, and R001 is the resistance of current-limiting resistance R001, and R002 is the resistance of current-limiting resistance R002, R
connectfor human body contacts produced contact resistance with the first contact M1 with the second contact M2.Voltage U=(the R001+R002+R at the second end place of sampling resistor R1
connect)/R*Vcc, wherein, Vcc is the magnitude of voltage of power supply.The voltage U at the second end place is less than or equal to voltage threshold, and treatment circuit does not carry out subsequent operation, and warning device does not perform alarm operation.
When the cable in electrostatic hand ring ruptures, or when the cable between electrostatic hand ring and the earth occurs to rupture, path between power supply and the earth is disconnected, resistance value R in circuit is infinitely great, the magnitude of voltage U at sampling resistor R1 second end place is approximately equal to the magnitude of voltage of power supply, is greater than the voltage threshold that monitor is preset.Now, treatment circuit output alarm control signal, warning device responds the alarm control signal received and carries out alarm operation.
When user has worn electrostatic hand ring, but when wearing very loose, the wrist of staff may contact the first contact M1 and the second contact M2 simultaneously, and the wrist of staff does not likely contact the first contact M1 and the second contact M2 simultaneously yet.Here it should be noted that, due to the first contact M1 in electrostatic hand ring and the second M2 installation site, contact very close, the therefore wrist of staff normally contact simultaneously or simultaneously do not contact the first contact M1 and the second contact M2.
If the wrist of staff contacts the first contact M1 and the second contact M2 just simultaneously, now staff's electrostatic with it still can conduct to the earth, and monitor is not reported to the police.If the wrist of staff does not contact the first contact M1 and the second contact M2 simultaneously, path then between power supply and the earth is disconnected, resistance value R in circuit is infinitely great, the magnitude of voltage U at sampling resistor R1 second end place is approximately equal to the magnitude of voltage of power supply, is greater than the voltage threshold that monitor is preset.Now, treatment circuit output alarm control signal, warning device responds the alarm control signal received and carries out alarm operation.
It should be noted that, this voltage threshold should be less than the magnitude of voltage of power supply, be greater than staff simultaneously and correctly wear electrostatic hand ring, and the cable of electrostatic hand ring ruptures, and the magnitude of voltage at sampling resistor second end place when not occurring to rupture of the cable between electrostatic hand ring and the earth.
The above-mentioned disclosed electrostatic hand ring monitor of the present invention, second interface that first end is connected to power supply by power supply node, the other end is connected to electrostatic hand ring of sample resistance, treatment circuit gathers the magnitude of voltage at the second end place of this sample resistance, the output alarm control signal when the magnitude of voltage collected is greater than voltage threshold, warning device responds this alarm control signal and carries out alarm operation afterwards.Based on electrostatic hand ring monitor disclosed by the invention, when user does not wear electrostatic hand ring, or user does not correctly wear electrostatic hand ring when causing the first contact not contact human body with the second contact, or when there is fracture in the cable in electrostatic hand ring, or when the cable between electrostatic hand ring and the earth occurs to rupture, current path between power supply and the earth is disconnected, the magnitude of voltage at the second end place of sampling resistor is greater than voltage threshold, warning device carries out alarm operation, prompting staff processes exception, thus ensures that static electricity on human body effectively releases to greatly.
The power end for the treatment of circuit 1 can be connected to power supply node Vcc, and namely sampling resistor R1 and treatment circuit 1 are powered by same power supply.Treatment circuit 1 also can be powered by other power supply.
In enforcement, warning device can adopt light warning module.Such as: light warning module comprises a switching tube and a light emitting diode, the control end of this switching tube is connected to an output port for the treatment of circuit, the first end of this switching tube is connected to power supply node Vcc, and the second end of this switching tube is connected to the anode of diode, the plus earth of diode.When the magnitude of voltage at the second end place for the treatment of circuit determination sampling resistor is greater than voltage threshold, generate alarm control signal and export this alarm control signal (high level signal) by its output port, the conducting of gauge tap pipe, drives lumination of light emitting diode, sends alarm to staff.
Certainly, light warning module can also adopt other structures.Be described below in conjunction with Fig. 3.
See the structural representation that Fig. 3, Fig. 3 are another kind of electrostatic hand ring monitor disclosed by the invention.This monitor comprises sample resistance R1, treatment circuit 1 and warning device.Only just be described with the difference part of the monitor of electrostatic hand ring shown in Fig. 1, remainder refers to associated description above, does not repeat them here.
Warning device comprises light warning module 21, and light warning module 21 comprises the first switching tube Q1, second switch pipe Q2, the first LED 1 and the second LED 2.
Wherein:
The control end of the first switching tube Q1 is connected to the first output port for the treatment of circuit 1 by the second resistance R2, the first end of the first switching tube Q1 is connected to power supply node Vcc by the 3rd resistance R3, the second end ground connection of the first switching tube Q1.
The control end of second switch pipe Q2 is connected to the first end of the first switching tube Q1 by the 4th resistance R4, the first end of second switch pipe Q2 is connected to power supply node Vcc by the 5th resistance R5, the second end ground connection of second switch pipe Q2.
The anode of the first LED 1 is connected to power supply node Vcc by the 6th resistance R6, and the negative electrode of the first LED 1 is connected to the first end of second switch pipe Q2.
The anode of the second LED 2 is connected to power supply node Vcc by the 6th resistance R6, and the negative electrode of the second LED 2 is connected to the first end of the first switching tube Q1.
When staff correctly wears electrostatic hand ring, cable in electrostatic hand ring does not rupture, and when the cable between electrostatic hand ring and the earth does not occur to rupture yet, the magnitude of voltage at sampling resistor R1 second end place is less than voltage threshold, the first output port output low level signal for the treatment of circuit 1.Now, the first switching tube Q1 ends, second switch pipe Q2 conducting, and the first LED 1 conducting is luminous, and the second LED 2 turns off not luminous.
When user does not wear electrostatic hand ring, or user does not correctly wear electrostatic hand ring when causing the first contact and the second contact not to contact human body simultaneously, or when there is fracture in the cable in electrostatic hand ring, or when the cable between electrostatic hand ring and the earth occurs to rupture, current path between power supply and the earth is disconnected, the magnitude of voltage at the second end place of sampling resistor R1 is greater than voltage threshold, and the first output port for the treatment of circuit 1 exports high level signal.Now, the first switching tube Q1 conducting, second switch pipe Q2 ends, and the first LED 1 turns off not luminous, and the second LED 2 conducting is luminous.
In enforcement, when the magnitude of voltage at the second end place of sampling resistor R1 is greater than voltage threshold, the first output port for the treatment of circuit 1 can also export height impulse level, and now the first LED 1 and the second LED 2 will replace luminescence.
Preferably, the first LED 1 and the second LED 2 can adopt the LED of different colours, and such as: the first LED 1 adopts green LED, the second LED 2 adopts red LED.
Certainly, the first LED 1 in monitor shown in Fig. 3 in light warning module 21 and the second LED 2 also can adopt ordinary lamps pearl to substitute.
It should be noted that, in the monitor shown in Fig. 3, light warning module 21 and sampling resistor R1 adopt same power supply to power, and in enforcement, light warning module 21 also can be powered by other power supply.
In enforcement, warning device 2 can also comprise buzzer warning module, is described below in conjunction with Fig. 4.
See the structural representation that Fig. 4, Fig. 4 are another kind of electrostatic hand ring monitor disclosed by the invention.This monitor comprises sample resistance R1, treatment circuit 1 and warning device.Only just be described with the difference part of the monitor of electrostatic hand ring shown in Fig. 3, remainder refers to associated description above, does not repeat them here.
Warning device comprises light warning module 21 and buzzer warning module 22, and wherein light warning module 21 can adopt any one structure disclosed above, adopts the structure shown in Fig. 3 here.Emphatically buzzer warning module 22 is described below.
Buzzer warning module 22 comprises hummer B1 and the 3rd switching tube Q3.The control end of the 3rd switching tube Q3 is connected to the second output port for the treatment of circuit 1 by the 7th resistance R7, the second end ground connection of the 3rd switching tube Q3, and the first end of the 3rd switch Q3 connects the negative terminal of hummer B1, and the anode of hummer B1 is connected to power supply node Vcc.
When staff correctly wears electrostatic hand ring, cable in electrostatic hand ring does not rupture, and when the cable between electrostatic hand ring and the earth does not occur to rupture yet, the magnitude of voltage at sampling resistor R1 second end place is less than voltage threshold, first output port output low level signal for the treatment of circuit 1, the second output port output low level signal for the treatment of circuit 1.Now, light warning module 21 does not carry out alarm operation, and the 3rd switching tube Q3 ends, and hummer B1 does not pipe.
When user does not wear electrostatic hand ring, or user does not correctly wear electrostatic hand ring when causing the first contact and the second contact not to contact human body simultaneously, or when there is fracture in the cable in electrostatic hand ring, or when the cable between electrostatic hand ring and the earth occurs to rupture, current path between power supply and the earth is disconnected, the magnitude of voltage at the second end place of sampling resistor R1 is greater than voltage threshold, first output port for the treatment of circuit 1 exports high level signal or height impulse level, and the second output port for the treatment of circuit 2 exports high level.Now, light warning module 21 performs corresponding alarm operation, and the 3rd switching tube Q3 conducting, hummer B1 pipes.
Electrostatic hand ring monitor shown in Fig. 4 of the present invention, light warning module 21 and buzzer warning module 22 are set in warning device simultaneously, the output port that light warning module 21 is different from treatment circuit 1 with buzzer warning module 22 is connected, when treatment circuit 1 break down cause one of them output port output alarm control signal not yet in effect time, the alarm module be connected with another one output port still can carry out alarm, compared with monitor shown in Fig. 3, system stability is higher.
It should be noted that, in the monitor shown in Fig. 4, light warning module 21, buzzer warning module 22 adopt same power supply to power with sampling resistor R1.In enforcement, light warning module 21, buzzer warning module 22 also can be powered by other power supply.
Certainly, in implementation process, warning device also can only comprise buzzer warning module 22.
In enforcement, state in each electrostatic hand ring monitor disclosed on the invention, communicating circuit can be set further, the power end of this communicating circuit is connected to power supply node Vcc, be that communicating circuit is powered by the power supply of powering for sampling resistor R1, also the power end of communicating circuit can be connected to other power supplies, be that communicating circuit is powered by other power supplies.Now, electrostatic hand ring uses as monitoring extension set, can realize and upper machine communication.By host computer, real-time inquiry is carried out to each extension set, the state of extension set timely feedback self after receiving the query message of host computer, then by host computer by the information feed back of extension set to the webserver, thus realize remote monitoring.This communicating circuit can be RS-485 communicating circuit, also can be RS-232 communicating circuit.
In addition, treatment circuit 1 also can adopt various structures.
Such as: treatment circuit 1 comprises analog to digital conversion circuit and single-chip microcomputer.Concrete, the input end of analog to digital conversion circuit is connected to second end of sample resistance R1, analog to digital conversion circuit is for obtaining the magnitude of voltage at the second end place of sample resistance R1, and this magnitude of voltage is converted to digital signal, single-chip microcomputer is connected with the output terminal of analog to digital conversion circuit, digital signal characterize magnitude of voltage lower than output alarm signal during voltage threshold.
Such as: treatment circuit 1 comprises the single-chip microcomputer and the 8th resistance with analog-digital conversion function.The input port that one end of 8th resistance is connected to second end of sampling resistor R1, the other end is connected to the single-chip microcomputer with analog-digital conversion function.8th resistance is used for current limliting, prevents big current from pouring into single-chip microcomputer infringement single-chip microcomputer.The analog voltage amount of this single-chip microcomputer Real-time Collection input port input also carries out analog to digital conversion, output alarm control signal when the voltage after carrying out analog to digital conversion is greater than voltage threshold.PIC12F675 type single-chip microcomputer can be adopted, the RA0 port that one end of the 8th resistance is connected to second end of sampling resistor R1, the other end is connected to PIC12F675 type single-chip microcomputer in enforcement.
In enforcement, in order to realize the opening and closing to electrostatic hand ring monitor, the power supply with switch can be adopted, realizing the opening and closing to electrostatic hand ring monitor by the opening and closing controlling power supply.The present invention further improves above-mentioned each electrostatic hand ring monitor disclosed, arranges the first switch between power supply node Vcc and power supply, by controlling the first opening and closing of switch realization to electrostatic hand ring monitor.
In addition, the earth terminal in each electrostatic hand ring monitor disclosed by the invention is connected to the earth by second switch.
See the structural representation that Fig. 5, Fig. 5 are another kind of electrostatic hand ring monitor disclosed by the invention.This monitor comprises sample resistance R1, treatment circuit, warning device and communicating circuit.
Wherein:
The first end of sample resistance R1 is connected to power supply node Vcc, power supply node Vcc is connected to the second plug CN2 by the first K switch 1, the opposite side of the second plug CN2 is connected to power supply, second end of sample resistance R1 is connected to a contact pin of the first plug CN1, and another contact pin of this first plug CN1 is connected to the earth by cable.Socket on first plug CN1 and electrostatic hand ring is adaptive, first interface and second interface of electrostatic hand ring are positioned at this socket, after the first plug CN1 inserts the socket of electrostatic hand ring, a contact pin in first plug CN1 and an interface contact of electrostatic hand ring, another contact pin in the first plug CN1 and another interface contact of electrostatic hand ring.
Treatment circuit comprises PIC12F675 type single-chip microcomputer U1 and the 8th resistance R8, the RA0 port that one end of the 8th resistance R8 is connected to second end of sampling resistor R1, the other end is connected to PIC12F675 type single-chip microcomputer.The analog voltage amount that PIC12F675 type single-chip microcomputer U1 Real-time Collection input port RA0 port inputs also carries out analog to digital conversion, the output alarm control signal when determining that the voltage after analog to digital conversion is greater than voltage threshold.
Warning device comprises light warning module and buzzer warning module.
Light warning module comprises the first switching tube Q1, second switch pipe Q2, the first LED 1 and the second LED 2.The control end of the first switching tube Q1 is connected to the RB7 port of PIC12F675 type single-chip microcomputer U1 by the second resistance R2, the first end of the first switching tube Q1 is connected to power supply node Vcc by the 3rd resistance R3, the second end ground connection of the first switching tube Q1.The control end of second switch pipe Q2 is connected to the first end of the first switching tube Q1 by the 4th resistance R4, the first end of second switch pipe Q2 is connected to power supply node Vcc by the 5th resistance R5, the second end ground connection of second switch pipe Q2.The anode of the first LED 1 is connected to power supply node Vcc by the 6th resistance R6, and the negative electrode of the first LED 1 is connected to the first end of second switch pipe Q2.The anode of the second LED 2 is connected to power supply node Vcc by the 6th resistance R6, and the negative electrode of the second LED 2 is connected to the first end of the first switching tube Q1.
Buzzer warning module comprises hummer B1 and the 3rd switching tube Q3.The control end of the 3rd switching tube Q3 is connected to the RB6 port of PIC12F675 type single-chip microcomputer U1 by the 7th resistance R7, the second end ground connection of the 3rd switching tube Q3, the first end of the 3rd switch Q3 connects the negative terminal of hummer B1, and the anode of hummer B1 is connected to power supply node Vcc.
Communicating circuit comprises max478 chip U2, the 9th resistance R9, the tenth resistance R10 and the 11 resistance R11.The RC5 port that first pin of max478 chip U2 is connected to the RC7 port of PIC12F675 type single-chip microcomputer U1, the second pin is connected to PIC12F675 type single-chip microcomputer U1, the 4th pin are connected to the RC6 port of PIC12F675 type single-chip microcomputer U1, the three-prong of max478 chip U2 and the second pin short circuit.8th pin of max478 chip U2 is connected to power supply node Vcc, the 5th pin ground connection, 7th pin of max478 chip U2 is connected to one end of the 9th resistance R9, the other end of the 9th resistance R9 is a PORT COM of communicating circuit, 6th pin of max478 chip U2 is connected to one end of the tenth resistance R10, and the other end of the tenth resistance R10 is another PORT COM of communicating circuit.11 resistance R11 is connected between the 6th pin of max478 chip U2 and the 7th pin.
The earth terminal of electrostatic hand ring monitor is connected to the earth by second switch K2.
It should be noted that, in the present invention, the first switching tube Q1, second switch pipe Q2 and the 3rd switching tube Q3 can adopt NPN type triode or N channel field-effect pipe.When the first switching tube Q1, second switch pipe Q2 and the 3rd switching tube Q3 adopt NPN type triode, first end is collector, and the second end is emitter, and control end is base stage.When the first switching tube Q1, second switch pipe Q2 and the 3rd switching tube Q3 adopt N channel field-effect pipe, first end is drain electrode, and the second end is source electrode, and control end is grid.
The invention also discloses a kind of electrostatic guiding system, comprise electrostatic hand ring, this electrostatic hand ring comprises the first contact, the second contact, first interface and the second interface, first contact of electrostatic hand ring and the second contact are by human body conducting, first interface is connected with the first contact, second interface is connected with the second contact, and the first interface of electrostatic hand ring is connected to the earth by cable, and this electrostatic guiding system also comprises above-mentioned any one electrostatic hand ring monitor disclosed of the present invention.
Based on electrostatic guiding system disclosed by the invention, Real-Time Monitoring staff whether correctly can wear electrostatic hand ring, and whether the cable can monitored in electrostatic hand ring and ground cable rupture, cannot effectively release to time greatly at electrostatic leakage access denial, electrostatic, carry out alarm operation, prompting user processes exception, thus guarantees that the electrostatic of human body is effectively released to greatly.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
It will be understood by those skilled in the art that and any one in much different technique and technology can be used to represent information, message and signal.Such as, the message mentioned in above-mentioned explanation, information can be expressed as voltage, electric current, electromagnetic wave, magnetic field or magnetic particle, light field or more combination in any.
Claims (10)
1. an electrostatic hand ring monitor, for monitoring the duty of electrostatic hand ring, described electrostatic hand ring comprises the first contact, the second contact, first interface and the second interface, described first contact and described second contact are by human body conducting, described first interface is connected with described first contact, and described second interface is connected with described second contact, and the first interface of described electrostatic hand ring is connected to the earth by cable, it is characterized in that, described monitor comprises:
Sample resistance, second interface that first end is connected to power supply node, the second end is connected to described electrostatic hand ring of described sample resistance, described power supply node is connected to power supply;
Treatment circuit, the voltage signal acquisition port of described treatment circuit is connected to the second end of described sample resistance, and described treatment circuit gathers the magnitude of voltage at the second end place of described sample resistance, and when described magnitude of voltage is greater than voltage threshold output alarm control signal;
Be connected with the output port of described treatment circuit, respond the warning device that described alarm control signal carries out alarm operation.
2. electrostatic hand ring monitor according to claim 1, is characterized in that, the power end of described treatment circuit is connected to described power supply node.
3. electrostatic hand ring monitor according to claim 1, is characterized in that, described warning device comprises light warning module.
4. electrostatic hand ring monitor according to claim 3, is characterized in that, described light warning module comprises the first switching tube, second switch pipe, the first light emitting diode and the second light emitting diode;
The control end of described first switching tube is connected to the first output port of described treatment circuit by the second resistance, the first end of described first switching tube is connected to described power supply node by the 3rd resistance, the second end ground connection of described first switching tube;
The control end of described second switch pipe is connected to the first end of described first switching tube by the 4th resistance, the first end of described second switch pipe is connected to described power supply node by the 5th resistance, the second end ground connection of described second switch pipe;
The first end that the anode of described first light emitting diode is connected to described power supply node by the 6th resistance, negative electrode is connected to described second switch pipe;
The anode of described second light emitting diode is by described 6th resistance is connected to described power supply node, negative electrode is connected to described first switching tube first end.
5. electrostatic hand ring monitor according to claim 1, is characterized in that, described warning device comprises buzzer warning module, and described buzzer warning module comprises hummer and the 3rd switching tube;
The control end of described 3rd switching tube is connected to the second output port of described treatment circuit by the 7th resistance, second end ground connection of described 3rd switching tube, the first end of described 3rd switch connects the negative terminal of hummer, and the anode of described hummer is connected to described power supply node.
6. electrostatic hand ring monitor according to any one of claim 1 to 5, is characterized in that, also comprises the communicating circuit be connected with described treatment circuit, and the power end of described communicating circuit is connected to described power supply node.
7. electrostatic hand ring monitor according to claim 1, is characterized in that, described treatment circuit comprises:
Input end is connected to the second end of described sample resistance, obtains the magnitude of voltage at the second end place of described sample resistance and described magnitude of voltage is converted to the analog to digital conversion circuit of digital signal;
Be connected with the output terminal of analog-digital conversion circuit as described, the single-chip microcomputer of output alarm control signal when the magnitude of voltage that described digital signal characterizes is greater than voltage threshold.
8. electrostatic hand ring monitor according to claim 1, is characterized in that, described treatment circuit comprises:
PIC12F675 type single-chip microcomputer;
The 8th resistance that one end is connected to the second end of described sampling resistor, the other end is connected to the RA0 port of described PIC12F675 type single-chip microcomputer.
9. electrostatic hand ring monitor according to claim 1, is characterized in that, also comprises the first switch be arranged between described power supply node and described power supply, and the earth terminal of described electrostatic hand ring monitor is connected to the earth by second switch.
10. an electrostatic guiding system, comprise electrostatic hand ring, described electrostatic hand ring comprises the first contact, the second contact, first interface and the second interface, described first contact and described second contact are by human body conducting, described first interface is connected with described first contact, described second interface is connected with described second contact, the first interface of described electrostatic hand ring is connected to the earth by cable, it is characterized in that, described electrostatic guiding system also comprises electrostatic hand ring monitor as claimed in any one of claims 1-9 wherein.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310237677.2A CN104237717B (en) | 2013-06-14 | 2013-06-14 | Electrostatic hand ring monitor and electrostatic guiding system |
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| CN201310237677.2A CN104237717B (en) | 2013-06-14 | 2013-06-14 | Electrostatic hand ring monitor and electrostatic guiding system |
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