CN101431192A - Anti-extrusion trample protection device of power supply socket - Google Patents
Anti-extrusion trample protection device of power supply socket Download PDFInfo
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- CN101431192A CN101431192A CNA2008102043773A CN200810204377A CN101431192A CN 101431192 A CN101431192 A CN 101431192A CN A2008102043773 A CNA2008102043773 A CN A2008102043773A CN 200810204377 A CN200810204377 A CN 200810204377A CN 101431192 A CN101431192 A CN 101431192A
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Abstract
An extrusion-proof pedal protecting device for a power connecting plate in the technical field of the safety protection of connecting plates comprises a power module, an electric bridge module, an amplification module and an alarm module, wherein, the input interface of the power module is connected with alternating-current commercial power; and the power module is connected with the electric bridge module, the amplification module and the alarm module in sequence. The protecting device is characterized in that the electric bridge module comprises a dynamic electric bridge arm and a static electric bridge arm, wherein, the static electric bridge arm comprises two metal film resistors with equal resistance; the dynamic electric bridge arm comprises a resistance strain gage and a trimming resistor; and the output end of the electric bridge module is connected with the amplification module. In the invention, the protecting device can give an alarm when the power connecting plate is collided and extruded or when children get an electric shock in play, thereby ensuring that the power connecting plate is safer, reliable and humanized in use.
Description
Technical field
What the present invention relates to is the device in a kind of terminal block security protection technology field, specifically is a kind of anti-extrusion trample protection device of power supply socket.
Background technology
As everyone knows, power patch panel has been widely used in various places such as office and family, but its safety problem is not to use the focus of person institute common concern all the time.Around the power patch panel safety problem various solutions and practical technique have been arranged, comprise: how to prevent to get an electric shock, how to prevent that child from playing and misconnection is touched, how to prevent that dust from falling into or the like, yet technology in the past is still perfect inadequately, especially the characteristics that lack hommization, thereby, often cause the damage of power patch panel and even electric equipment, even cause user of service's fortuitous casualty because of the technological deficiency of power patch panel.
Find by prior art documents; Chinese patent application number is 200810059065.8; publication number CN101217221A; put down in writing " a kind of safety socket that is used for terminal block "; comprise the pedestal (1) that has a plurality of jacks (11) and be arranged on the interior pin (2) of jack (11); pedestal (1) go up be provided with one at least on the surface of two jacks (11) can spacing mobile baffle (3) and jack (11) is covered; the position of going up one of them jack (11) in the corresponding jack (11) that will cover at this baffle (3) has through hole (31); move under the opening at this baffle (3), the through hole (31) on this baffle (3) aligns with corresponding jack (11).This patent solves two technical problems: first technical problem is " providing a kind of foreign object that can effectively prevent to enter in the jack of socket, use the safety socket that is used for terminal block reliably as safe as a house "; Second technical problem is " a kind of safety socket that is used for terminal block that electric wire is connected with the pin good electrical of socket of being easy to is provided ".Solving first the very corn of a subject technology is: " be provided with on the surface of at least two jacks one can spacing mobile baffle and described jack is covered "; Solving second the very corn of a subject technology is: U type shape is adopted in the outer bottom of pedestal, improves electric interface with this.But, above-mentioned technology does not consider that but the maximum probability of happening that influences the power patch panel trouble free service is: most application scenario, often with the power patch panel drag and drop on the other floor of table or under the desk, particularly in many office spaces, in this case, power patch panel can occur being trampled by the people or by phenomenons such as books glands unavoidably; This phenomenon is in case take place, and gently then, the power consumption equipment loose contact, causes interim outage; Heavy then, when damaging power patch panel, cause power supply short circuit, can cause also that sometimes significant trouble appears in power consumption equipment, as the electric equipment of computer and so on.Therefore, really improve the security reliability of power patch panel, also should consider a problem, technology starting point of the present invention that Here it is from the angle of hommization more.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art; a kind of anti-extrusion trample protection device of power supply socket is provided; can bump and push or report to the police when getting an electric shock at power patch panel, make power patch panel use safer, reliable and hommization when children play.
The present invention is achieved by the following technical solutions, the present invention includes: power module, electric bridge module, amplification module and alarm module, wherein: the input interface of power module is connected with electric main, and power module connects electric bridge module, amplification module and alarm module successively.
Described power module, comprise: reduction voltage circuit, current rectifying and wave filtering circuit and voltage stabilizing circuit, wherein: the input of reduction voltage circuit connects electric main, the output of reduction voltage circuit is connected with current rectifying and wave filtering circuit with voltage stabilizing circuit simultaneously, and the output of current rectifying and wave filtering circuit links to each other with current-limiting resistance with amplification module simultaneously.
Reduction voltage circuit in the described power module comprises decompression capacitor parallel with one another and charge discharging resisting resistor, and wherein: the appearance value of decompression capacitor is 0.4 μ F/200V～1 μ F/450V, and the resistance of charge discharging resisting resistance is 0.5M Ω～2M Ω.
Current rectifying and wave filtering circuit in the described power module comprises the rectifier diode and the filtering capacitor in parallel of series connection, and wherein: the rated operational current of rectifier diode is 1A, and peak-inverse voltage is 450V, and the parameter of filtering capacitor is 100 μ F/450V.
Voltage stabilizing circuit in the described power module is a voltage stabilizing didoe in parallel, and the voltage stabilizing value of this voltage stabilizing didoe is 10V～14V.
Described electric bridge module is a full bridge structure, comprise dynamic bridge arm and static bridge arm, wherein: static bridge arm comprises the metal film resistor that two resistances equate, dynamically bridge arm comprises resistance strain gage and trimmer resistor, two intersection points that static bridge arm is connected with dynamic bridge arm are the working power input endpoint of electric bridge module, the end points of accepting the positive voltage input is called anodal end points, the end points of accepting the negative voltage input is called the negative pole end points, between the static bridge arm and dynamically two tie points between the bridge arm are the strain signal exit point of electric bridge module, the strain signal of electric bridge module exit point output is the potential difference of these two end points, that is the voltage of two end points, electric bridge module exit point is connected with amplification module.
Resistance strain gage in the described electric bridge module specifically is arranged at the inwall upper end of terminal block shell, and this resistance strain gage is the substrate of paper tinsel formula polyimides.
The adjustable accompanying drawing scope of trimmer resistor in the described electric bridge module is 100 Ω～1k Ω Ω, and degree of regulation is 0.1 Ω.
Be provided with current-limiting resistor between described electric bridge module and power module, this current-limiting resistance implement body is connected in the output cathode end points of power module and the working power of electric bridge module is imported between the anodal end points, and its resistance is 50 Ω～470 Ω.
Described amplification module is the NPN type common-collector amplifier that directly is coupled, it is emitter follower, wherein: the collector electrode direct current is connected with power module, the base biasing resistor device connects the base stage and the power module of NPN type triode respectively, one end of loading resistor is connected with the emitter of NPN type triode, an end is connected with the negative pole of power module and ground connection, and the emitter of NPN type triode is connected with alarm module.
The currentamplificationfactor of described NPN type triode is 90～110.
Described alarm module comprises alarm and audio amplifier, and wherein: the input of alarm is connected with the output of amplification module, and alarm places audio amplifier.
Described alarm is a kind of direct current buzzer, as long as at its input port input direct voltage signal, alarm will send tweeting sound.
Described audio amplifier is the housing of power patch panel.
The course of work of the present invention is as follows: by power module the voltage of electric main is reduced and rectification after respectively as the power supply of electric bridge module and amplification module, the electric bridge module keeps output valve to be lower than the amplification module quiescent point after trimmer resistor is set bridge balance, after resistance strain gage was because of vibration or the variation of the pressurized value of having a resistance, the electric bridge module produced enough big voltage signal output and by amplification module signal is amplified to alarm module and outputs in audio signal the caution user.
Compared with prior art, the present invention can the real time reaction power patch panel abnormal operating state and carry out early warning, the present invention simultaneously is simple in structure, convenient for installation and maintenance, the housing that adopts power patch panel is as audio amplifier, alarm module can send the sound equipment early warning of enough decibels, and the built-in of alarm also makes original power patch panel outward appearance not be subjected to any change, also reduced the possibility that dust falls into.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the embodiment circuit diagram;
Fig. 3 is the embodiment scheme of installation;
Fig. 4 is the resistance strain gage schematic diagram.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: power module 1, electric bridge module 2, amplification module 3 and alarm module 4, wherein: the input interface of power module 1 is connected with electric main, first output interface of power module 1 is connected with the input interface of electric bridge module 2, the output interface of electric bridge module 2 is connected with the input interface of amplification module 3, and the output interface of amplification module 3 is connected with the input interface of alarm module 4.
As shown in Figure 2, power module 1 described in the present embodiment, comprise: decompression capacitor 5, charge discharging resisting resistor 6, rectifier diode 7, voltage stabilizing didoe 8, filtering capacitor 9, current-limiting resistor 10, wherein, decompression capacitor 5 is in parallel with charge discharging resisting resistor 6, be first termination and charge discharging resisting resistor 6 first terminations of decompression capacitor 5 and connect that second termination of decompression capacitor 5 and charge discharging resisting resistor 6 second terminations also connect; First termination of decompression capacitor 5 is connected with the live wire of electric main with the also contact of charge discharging resisting resistor 6 first terminations, second termination of decompression capacitor 5 is connected with the positive pole of rectifier diode 7 with the also contact of charge discharging resisting resistor 6 second terminations, also is connected with the negative pole of voltage stabilizing didoe 8 simultaneously; The negative pole of rectifier diode 7 is connected with first termination of filtering capacitor 9, the tie point of first termination of the negative pole of rectifier diode 7 and filtering capacitor 9 also is the cathode output end head of second output interface simultaneously, and this termination also is connected with first termination of current-limiting resistor 10 simultaneously; Second termination of current-limiting resistor 10 is the cathode output end head of power module 1 first output interface; The positive and negative electrode of first output interface output termination is connected with the positive and negative electrode input endpoint of the power input interface of electric bridge module 2 respectively; The positive and negative electrode of second output interface output termination is connected with the positive and negative electrode input endpoint of the power input interface of amplification module 3 respectively; All the other, the negative input point of the negative input point of the cathode output end head of second termination of the positive pole of voltage stabilizing didoe 8, filtering capacitor 9, the cathode output end head of first output interface, second output interface, the power input interface of electric bridge module 2, loading resistor 16 earth terminals of amplification module 3, alarm module 4 input interfaces and the zero line of electric main are idiostatic, promptly interconnect.Decompression capacitor 5 utilizes its AC impedance that the electric main that inserts is cut down output and gives birth to the effect of reduction alternating voltage; Charge discharging resisting resistor 6 plays the effect of stored charge on the decompression capacitor 5 of releasing when turn-offing electric main; The low-voltage alternating current of 7 pairs of decompression capacitors of rectifier diode, 5 outputs carries out rectification; Voltage stabilizing didoe 8 not only can overcome the influence of ac commercial power voltage fluctuation to output dc voltage stability, can also play flat work done in the manner of a certain author usefulness to the spike of rectifier diode 7 output waveforms simultaneously, promptly eliminates the waveform spike; Disorderly wave component in filtering capacitor 9 filtering rectifier diodes 7 output waveforms; Current-limiting resistor 10 is to be provided with for adjusting output voltage, when the desired magnitude of voltage of the power input interface of electric bridge module 2 was lower than the magnitude of voltage of power module 1 rectification output, just needing increased this current-limiting resistor 10 so that further reduce the magnitude of voltage of rectifier diode 7 outputs.
As shown in Figure 2, electric bridge module 2 described in the present embodiment, comprise: resistance strain gage 11, trimmer resistor 12, two metal film resistors 13 and 14 that resistance equates fully, common four arms that constitute electric bridge module 2, the metal film resistors 13 and 14 that the dynamic arm that resistance strain gage 11 is called as electric bridge module 2 jointly as the sensing element and the trimmer resistor 12 of sensing stress, two resistances equate fully are called the static arm of electric bridge module 2.Annexation wherein is: first termination of resistance strain gage 11 is connected with second termination of trimmer resistor 12, first termination of trimmer resistor 12 is connected with first termination of first metal film resistor 13, second termination of first metal film resistor 13 is connected with first termination of second metal film resistor 14, and second termination of second metal film resistor 14 is connected with second termination of resistance strain gage 11; Second termination of second metal film resistor 14 is connected with the negative pole termination of first output interface of power module 1 with the negative pole termination of the tie point of second termination of resistance strain gage 11 as the input interface of electric bridge module 2, and first termination of trimmer resistor 12 is connected with the anodal termination of first output interface of power module 1 with the anodal termination of the tie point of first termination of first metal film resistor 13 as the input interface of electric bridge module 2; The tie point of first termination of resistance strain gage 11 and second termination of trimmer resistor 12 is connected with the anodal end points of amplification module 3 input interfaces as first current potential exit point of electric bridge module 2 output interfaces, and second termination of first metal film resistor 13 is connected with the negative pole end points of amplification module 3 input interfaces with second current potential exit point of the tie point of first termination of second metal film resistor 14 as electric bridge module 2.First current potential exit point of electric bridge module 2 output interfaces is called the measurement potential point again, and second current potential exit point of electric bridge module 2 is called reference point of potential again.Resistance strain gage 11 in the described electric bridge module 2 closely is attached to the last internal face of power patch panel plastic casing by using high-performance H-610 type Heraeus, be on the back side of socket panel of power patch panel, the room requires cleaning during the card sheet, relative humidity is less than 60%, all will make resistance strain gage 11 increase as long as the socket panel of power patch panel exerted pressure along with the stress deformation of power patch panel socket panel can cause resistance strain gage 11 resistances, the increase of resistance strain gage 11 resistances has destroyed electric bridge module 2 original output states immediately, cause that promptly electric bridge module 2 produces new voltage signal output, the voltage signal of electric bridge module 2 outputs is in case surpass the threshold value that presets, be the input voltage initial value of amplification module 3, the voltage signal of this electric bridge module 2 outputs will be exaggerated module 3 and amplify and drive alarm module 4 and export the buzzing sound equipments; Trimmer resistor 12 and two metal film resistors 13,14 are followed other device and are installed other position in the power patch panel plastic casing concentratedly.
As shown in Figure 2, the amplification module 3 described in the present embodiment comprises: negative-positive-negative transistor 15, emitter loading resistor 16 and base biasing resistor device 17.The collector electrode of negative-positive-negative transistor 15 directly is connected with the anodal end points of power module 1 second output interface, emitter loading resistor 16 is serially connected with the emitter of negative-positive-negative transistor 15 and the negative pole end points of power module 1 second output interface, be between the earth point, 17 cross-over connections of base biasing resistor device are between the anodal end points of the base stage of negative-positive-negative transistor 15 and power module 1 second output interface, the base stage of negative-positive-negative transistor 15 is taked to be connected with the direct-coupled mode of measurement potential point of electric bridge module 2, therefore, described amplification module 3 belongs to a kind of and the direct-coupled transistor common collector of prime dc amplification circuit, claim emitter follower again, the input voltage initial value of this circuit depends on the PN junction equivalent resistance between negative-positive-negative transistor base stage and the emitter and the equivalent input resistance value of emitter-base bandgap grading loading resistor simultaneously, both series connection numerical value is called as the input resistance value of emitter follower, the resistance that changes the design (calculated) load resistor just can corresponding this emitter follower of change the input voltage initial value, emitter follower has good low output impedance characteristic, so it has good impedance tracking to output loadings such as alarm modules 4.
As shown in Figure 3, resistance strain gage 11 described in the present embodiment adopts high-performance H-610 type Heraeus closely to be attached to the last internal face of power patch panel plastic casing, be on the back side of socket panel of power patch panel, as long as the suffered active force of socket panel of power patch panel exceeds the scope of permission, will cause the increase of resistance strain gage 11 resistances because of the deformation of socket panel, and then make the voltage output after electric bridge module 2 produces strain; Alarm module 4 is installed in the side body away from mains switch of power patch panel, when amplification module 3 receives when being enough to make it to start electric bridge module 2 output voltage signals that amplify, amplification module 3 amplifies rear drive alarm module 4 with this electric bridge module output voltage signal, makes alarm module 4 send clearly tweeting sound in real time and notices that in order to remind peripheral personnel power patch panel has been pushed or trampled the generation of thing by article; The sound equipment that alarm module 4 sends can utilize the internal cavities of power patch panel as the resonance sound column, need not to set up separately under the situation of signal power amplifier, improved the sound equipment gain of alarm module 4 outputs, therefore can send the sound equipment of enough decibels, also need not simultaneously the position perforate separately of alarm module 4 is installed, guaranteed that original power patch panel outward appearance is not subjected to any change, has also reduced the possibility that dust falls into; Remaining part comprises: the trimmer resistor of power module 1, amplification module 3, electric bridge module 2 12, two metal film resistors 13 and 14 that resistance equates, all install time side space in the housing of power patch panel mains switch concentratedly.
Main devices parameter in the present embodiment is: the capacitance of decompression capacitor 5 is 1 μ F/450V, the resistance value of charge discharging resisting resistor 6 is 1M Ω, the voltage stabilizing value of voltage stabilizing didoe 8 is 12V, the capacitance of filtering capacitor 9 is 100 μ F/450V, the resistance value of current-limiting resistor 10 is 350 Ω, the currentamplificationfactor of negative-positive-negative transistor 15 is 100, the input voltage initial value of the emitter follower that is made of negative-positive-negative transistor 15 is 1V, metal film resistor 13,14 resistance value is 350 Ω, metal film resistor 13,14 in the time of 70 ℃ rated power be 0.167W, temperature coefficient is (15～± 50) * 10
-6/ ℃, element limiting voltage 200V, insulation voltage 250V, permissible error ± 0.1%, the direct current buzzer is of a size of 9.6 * 9.6 * 5.0mm, operating voltage is greater than DC5V, operating current is less than 30mA.
As shown in Figure 4, described resistance strain gage 11 adopts the resistance strain gage of paper tinsel formula polyimides substrate, and the sensitive grid 18 of this resistance strain gage is of a size of 2 * 2mm, and substrate 19 is of a size of 6 * 4mm, the standard resistor of resistance strain gage is 350 Ω, and the baseline working temperature is 80 ℃.
Present embodiment carries out work in the following way:
The first step, necessity debugging before using: before using this anti-extrusion trample protection device of power supply socket, electric bridge module 2 has wherein been carried out necessary debugging with amplification module 3.
The debugging of described electric bridge module 2 promptly inserts under the situation of 220V electric main at anti-extrusion trample protection device of power supply socket, regulates the resistance value of trimmer resistor 12, makes electric bridge module 2 be in poised state or non-equilibrium state in advance.So-called " poised state " is that the resistance value of trimmer resistor 12 resistance strain gages equates, the output voltage of electric bridge module 2 is zero at this moment; So-called " non-equilibrium state " is that trimmer resistor 12 is unequal with the resistance value of resistance strain gage 11, and the output voltage of electric bridge module 2 is non-vanishing at this moment, and the output of certain voltage signal is promptly arranged.In case regulate the resistance value of trimmer resistor 12, make electric bridge module 2 be in poised state in advance, then mean: charged power patch panel has only when being pushed or trampling by a certain size active force, electric bridge module 2 just can produce the voltage signal output that enough is higher than amplification module 3 input starting voltage value 1V, otherwise amplification module 3 can not amplify the voltage signal that electric bridge module 2 is exported; In case regulate the resistance value of trimmer resistor 12, make electric bridge module 2 be in certain non-equilibrium state in advance, as: the resistance value of trimmer resistor 12 is bigger than the resistance of resistance strain gage, and both ratios are 11:7, when the input voltage of electric bridge module 2 is 6V, under the situation that the resistance of resistance strain gage does not change as yet, the output voltage of electric bridge module 2 is 0.82V, at this moment, push or trample as long as charged power patch panel is subjected to less action force, electric bridge module 2 is exaggerated module 3 with regard to producing the voltage signal output that enough is higher than amplification module 3 input starting voltage value 1V and amplifies.The purpose of electric bridge module 2 debugging just is to set one " force sensor initiation threshold ", " stress initiation threshold " in other words into electric bridge module 2.
The debugging of described amplification module 3, promptly regulate the resistance value of the base biasing resistor device 17 of negative-positive-negative transistor 15, so that obtain enough current amplification factors, simultaneously, regulate the resistance value of emitter-base bandgap grading loading resistor 16, so that regulate the input voltage initial value of amplification module 3.
Second step, the normal use:
Behind power patch panel incoming transport civil power, drop into power patch panel in case have object, the object compressing is perhaps arranged on power patch panel, perhaps there is the people to trample power patch panel carelessly, perhaps there is child to go to play, misconnection electric shock source terminal block, as long as wherein any effect all can make resistance strain gage be stretched because of the physical strain of power patch panel socket panel to the active force that power patch panel produces greater than the standard of setting, compression or distortion, therefore changed the resistance of resistance strain gage, and then destroyed the original output state of electric bridge module, make the electric bridge module export a new voltage signal, this voltage signal is in case surpass amplification module input voltage initial value, the signal that amplification module is about to electric bridge module output is amplified to be enough to drive alarm module and to send sound equipment, therefore remind the personnel of periphery to note: power patch panel is oppressed by weight, certain undesired operating position perhaps appears, therefore can effectively avoid the damage of power patch panel, the perhaps accident that may lead to, such as: power patch panel is being pressed by books, and is very possible because the work temperature rise of power patch panel causes books to catch fire and leads to fire.
Present embodiment has following positive effect:
1. the power patch panel course of work; in case by other objects tie up, when oppressing; as: pushed by object accidentally; perhaps trampled or the like carelessly by the people; as long as its active force exceeds prior preset threshold; anti-extrusion trample protection device of power supply socket just can very reflect observantly; and remind peripheral personnel to note with the buzzing sound equipment; therefore can effectively avoid the damage of power patch panel or the casualty accident of personnel that may occur and property, guarantee that power patch panel is in safe operational environment and state all the time.
2. reliable, simple in structure, easy for installation, cheap for manufacturing cost.
3. utilize the original internal cavities of power patch panel as the resonance sound column, need not to set up separately under the situation of signal power amplifier, alarm module can send the sound equipment of enough decibels, also need not simultaneously the position perforate separately of alarm module is installed, guaranteed that original power patch panel outward appearance is not subjected to any change, has also reduced the possibility that dust falls into.
Claims (10)
1, a kind of anti-extrusion trample protection device of power supply socket; comprise: power module, electric bridge module, amplification module and alarm module; wherein: the input interface of power module is connected with electric main; power module connects electric bridge module, amplification module and alarm module successively; it is characterized in that; the electric bridge module comprises dynamic bridge arm and static bridge arm; wherein: static bridge arm comprises the metal film resistor that two resistances equate; dynamically bridge arm comprises resistance strain gage and trimmer resistor, and electric bridge module output is connected with amplification module.
2, anti-extrusion trample protection device of power supply socket according to claim 1; it is characterized in that; described power module; comprise: reduction voltage circuit, current rectifying and wave filtering circuit and voltage stabilizing circuit; wherein: the input of reduction voltage circuit connects electric main; the output of reduction voltage circuit is connected with current rectifying and wave filtering circuit with voltage stabilizing circuit simultaneously, and the output of current rectifying and wave filtering circuit links to each other with current-limiting resistance with amplification module simultaneously.
3, anti-extrusion trample protection device of power supply socket according to claim 2; it is characterized in that; reduction voltage circuit in the described power module comprises decompression capacitor parallel with one another and charge discharging resisting resistor; wherein: the appearance value of decompression capacitor is 0.4 μ F/200V～1 μ F/450V, and the resistance of charge discharging resisting resistance is 0.5M Ω～2M Ω.
4, anti-extrusion trample protection device of power supply socket according to claim 2; it is characterized in that; current rectifying and wave filtering circuit in the described power module comprises the rectifier diode and the filtering capacitor in parallel of series connection; wherein: the rated operational current of rectifier diode is 1A; peak-inverse voltage is 450V, and the parameter of filtering capacitor is 100 μ F/450V.
5, anti-extrusion trample protection device of power supply socket according to claim 2 is characterized in that, the voltage stabilizing circuit in the described power module is a voltage stabilizing didoe in parallel, and the voltage stabilizing value of this voltage stabilizing didoe is 10V～14V.
6, anti-extrusion trample protection device of power supply socket according to claim 1 is characterized in that, the resistance strain gage in the described electric bridge module specifically is arranged at the inwall upper end of terminal block shell, and this resistance strain gage is the substrate of paper tinsel formula polyimides.
7, anti-extrusion trample protection device of power supply socket according to claim 1 is characterized in that, the adjustable accompanying drawing scope of the trimmer resistor in the described electric bridge module is 100 Ω～1k Ω, and degree of regulation is 0.1 Ω.
8, anti-extrusion trample protection device of power supply socket according to claim 1 is characterized in that, is provided with current-limiting resistor between described electric bridge module and power module, and its resistance is 50 Ω～470 Ω.
9, anti-extrusion trample protection device of power supply socket according to claim 1; it is characterized in that; described amplification module is the NPN type common-collector amplifier that directly is coupled; wherein: the collector electrode direct current is connected with power module; the base biasing resistor device connects the base stage and the power module of NPN type triode respectively; one end of loading resistor is connected with the emitter of NPN type triode; the other end of loading resistor is connected with the negative pole of power module and ground connection, and the emitter of NPN type triode is connected with alarm module.
10, anti-extrusion trample protection device of power supply socket according to claim 1 is characterized in that, described alarm module comprises alarm and audio amplifier, and wherein: the input of alarm is connected with the output of amplification module, and alarm places audio amplifier.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043773A CN101431192B (en) | 2008-12-11 | 2008-12-11 | Anti-extrusion trample protection device of power supply socket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043773A CN101431192B (en) | 2008-12-11 | 2008-12-11 | Anti-extrusion trample protection device of power supply socket |
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| Publication Number | Publication Date |
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| CN101431192A true CN101431192A (en) | 2009-05-13 |
| CN101431192B CN101431192B (en) | 2011-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832513A (en) * | 2012-08-24 | 2012-12-19 | 刘举柱 | Computer power socket with alarming function |
| CN107168086A (en) * | 2017-06-29 | 2017-09-15 | 合肥步瑞吉智能家居有限公司 | It is a kind of based on light luminance and the plate safety control system for bearing dynamics |
-
2008
- 2008-12-11 CN CN2008102043773A patent/CN101431192B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832513A (en) * | 2012-08-24 | 2012-12-19 | 刘举柱 | Computer power socket with alarming function |
| CN107168086A (en) * | 2017-06-29 | 2017-09-15 | 合肥步瑞吉智能家居有限公司 | It is a kind of based on light luminance and the plate safety control system for bearing dynamics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101431192B (en) | 2011-06-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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