CN2935708Y - Service calling system for service industry - Google Patents
Service calling system for service industry Download PDFInfo
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- CN2935708Y CN2935708Y CN 200620017703 CN200620017703U CN2935708Y CN 2935708 Y CN2935708 Y CN 2935708Y CN 200620017703 CN200620017703 CN 200620017703 CN 200620017703 U CN200620017703 U CN 200620017703U CN 2935708 Y CN2935708 Y CN 2935708Y
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Abstract
The utility model relates to the field of electronic equipments, and provides a calling system for service industries. The calling system includes a power supply circuit, a control circuit and a calling circuit. Input end of the power supply circuit is connected with the city power supply, and output end of the circuit is connected with the input end of the control circuit. The power supply circuit is used to reduce the city power supply voltage to the safe range of DC voltage and supply operation voltage for the control circuit and the calling circuit. The output end of the control circuit is connected with the input end of the calling circuit to generate pulse DC voltage. The calling circuit generates calling signals as per frequency of the pulse DC voltage generated by the control circuit. The utility model is characterized in that the power supply circuit is used to reduce the city power supply voltage to the safe range of DC voltage, the control circuit generates pulse DC voltage, and then the calling system generates flash lights or flash lights plus discontinuous rings as the calling signals as per frequency of the pulse DC voltage. The utility model is featured with high safety, power saving, good indication effect and high service quality.
Description
Technical field
The utility model belongs to electronic device field, relates in particular to a kind of service calling system that is used for service industry.
Background technology
In the prior art, the calling lamp that generally is used for service industry's (such as KTV public place of entertainment or wineshop private room) is very general electric light, be loaded on indoor switch by pressing, make and be loaded on outdoor electric light and light, thereby the prompting staff need provide service, but this calling light fixture has following shortcoming: (1) is because this calling lamp is to be directly connected to mains supply with a common electrical bulb by switch control, if just in case circuit loop short circuit, then be easy to cause accidents such as fire, and just in case get an electric shock, easily cause casualties, so fail safe is relatively poor; And this calling lamp power is bigger, not only power consumption but also useful life shorter, thereby be unfavorable for that present stage country encourages to create the policy of economizing type, environment-friendly type, effectiveness type society; (2) because this calling lamp is to continue to light by electric light to point out, and in most of the cases, the staff is not easy to find to call lamp to light, thereby causes service untimely, and service quality is reduced.
The utility model content
Technical problem to be solved in the utility model is: a kind of service calling system that is used for service industry is provided, and it has safe, and save electricity and prompting effect are better, make the higher effect of service quality.
The utility model is achieved in that a kind of service calling system that is used for service industry, comprises power supply circuits, control circuit and calling circuit; Wherein the power supply circuits input is connected to mains supply, and output is connected to the control circuit input, is used for mains voltage is reduced within the scope of direct current safe voltage, and provides operating voltage for control circuit and switching circuit; Described control circuit output termination calling circuit input end is used to produce pulsed dc voltage; Described calling circuit sends calling signal by the frequency of the pulsed dc voltage that control circuit produces.
Wherein said power supply circuits comprise resistance R 1, capacitor C 1, C2, diode D1, D2, D3, D4 and voltage stabilizing didoe D5, the power supply circuits input inserts mains supply, through resistance R 1 and capacitor C 1 current limliting step-down, diode D1, D2, D3, D4 rectification, again through voltage stabilizing didoe D5 voltage stabilizing, capacitor C 2 filtering are reduced to the direct current safe voltage with ac high voltage, hold to control circuit and switching circuit power supply by VCC.
Wherein said control circuit comprises switching circuit and driving and oscillating circuit.
Wherein said switching circuit comprises trigger, K switch 10, capacitor C 14, C17, resistance R 12, R13, R14 and triode Q11, wherein trigger 4 pin and 10 pin are connected in series capacitor C 14 jointly, and by resistance R 13 serial connections 6 pin, 7 pin, 8 pin and 11 pin are ground connection again, capacitor C 14 positive poles and trigger 14 pin connect the VCC end, trigger 2 pin and 5 pin serial connection, 9 pin and 12 pin serial connection, 1 pin connects triode Q11 base stage by resistance R 14, resistance R 12 and capacitor C 17 are connected between trigger 3 pin and the ground, trigger 3 pin connect the VCC end by K switch 10, triode Q11 grounded emitter, collector electrode connect and drive and oscillating circuit; Thereby described switching circuit is by the saturation conduction of the upset control triode Q11 of trigger and by controlling and driving and oscillating circuit work.
Wherein said driving and oscillating circuit comprise 555 chips, resistance R 15, R16 and capacitor C 15, C16, wherein 555 chips, 7 pin connecting resistance R15 and resistance R 16,1 pin is directly connected to triode Q11 collector electrode, 2 pin, 6 pin connect triode Q11 collector electrode by capacitor C 16 jointly, 5 pin connect triode Q11 collector electrode by capacitor C 15,4 pin and 8 pin connect the VCC end jointly, the output of 3 pin; Described driving and oscillating circuit are to produce pulsed dc voltage by 555 chips, are input to the calling circuit, make the calling circuit send calling signal by the frequency of pulse direct voltage.
555 chips, the 3 pin sending and receiving optical diode LED10 of wherein said driving and oscillating circuit and the current-limiting resistance R18 that is in series with LED 10 be ground connection again, LED 10 provides the background pilot light for K switch 10, but and the root a tree name drives and the frequency of the pulsed dc voltage that oscillating circuit produces is glimmered to point out calling signal to send.
Wherein said calling circuit comprises LED 1 and LED 2, current-limiting resistance R9 and the loud speaker SP that is in series with current-limiting resistance R9, the pulsed dc voltage that calling circuit reception control circuit produces, again through LED 1, LED2 and loud speaker SP, send by the light of the frequency scintillation of pulse direct voltage and the tinkle of bells calling signal of interruption.
Wherein said control circuit comprises single chip machine controlling circuit and switching circuit.
Wherein said single chip machine controlling circuit comprises single-chip microcomputer, crystal oscillator Y21, capacitor C 23, C24, resistance R 22, R23, triode Q21, single-chip microcomputer 15 foot meridian capacitor C23 ground connection, single-chip microcomputer 16 foot meridian capacitor C24 ground connection, the direct ground connection of single-chip microcomputer 5 pin, crystal oscillator Y21 two ends connect single-chip microcomputer 15 pin and 16 pin respectively, for single-chip microcomputer provides oscillation frequency clock, single-chip microcomputer 4 pin, 14 pin and triode Q21 collector electrode connect the VCC end, 13 pin are exported pulsed dc voltage and are connect triode Q21 base stage by resistance R 22, triode Q21 emitter is connected to the calling circuit, the saturation conduction of single-chip microcomputer 13 pin by control triode Q21 with end, thereby control calling circuit working; Described switching circuit comprises K switch 20 that is connected to the VCC end and the resistance R 24 of connecting with K switch 20, and single-chip microcomputer 1 pin is connected to K switch 20, and by resistance R 24 ground connection, works by the external command control single chip computer that K switch 20 produces.
3 pin of wherein said single-chip microcomputer connect triode Q22 base stage by resistance R 23,4 pin and 14 pin connect triode Q22 collector electrode, triode Q22 emitter is by LED 20 ground connection, LED 20 provides the background pilot light for K switch 20, and can glimmer according to the frequency of the pulsed dc voltage of single-chip microcomputer 3 pin output and send with the prompting calling signal.
The beneficial effects of the utility model are: the utility model is reduced to the direct current safe voltage by power supply circuits with line voltage, and by control circuit generation pulsed dc voltage, make the calling circuit send the blinking light calling signal or send blinking light and be interrupted the tinkle of bells calling signal by the frequency of pulse direct voltage, have safe, save electricity and prompting effect are better, make the higher effect of service quality.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the theory diagram of the utility model embodiment 1;
Fig. 3 is the circuit diagram of the utility model embodiment 1;
Fig. 4 is the theory diagram of the utility model embodiment 2;
Fig. 5 is the circuit diagram of the utility model embodiment 2.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, service calling system of the present utility model comprises power supply circuits, control circuit and calling circuit; Wherein the power supply circuits input is connected to mains supply, and output is connected to the control circuit input, is used for mains voltage is reduced within the scope of direct current safe voltage, and provides operating voltage for control circuit and switching circuit; Described control circuit output termination calling circuit input end is used to produce pulsed dc voltage; Described calling circuit sends calling signal by the frequency of the pulsed dc voltage that control circuit produces.
Below in conjunction with Fig. 2 and Fig. 3 in detail, the circuit structure of the utility model embodiment 1 is described in detail.
The circuit structure of embodiment 1 comprises power supply circuits, switching circuit, driving and oscillating circuit and calling circuit, wherein the power supply circuits input is connected to mains supply, output is connected respectively to switching circuit, driving and oscillating circuit and calling circuit, driving and oscillating circuit are subjected to switching circuit control and for the calling circuit provides certain pulsed dc voltage, the calling circuit sends blinking light and interruption the tinkle of bells calling signal according to the frequency of pulsed dc voltage.
Wherein power supply circuits comprise resistance R 1, capacitor C 1, C2, diode D1, D2, D3, D4 and voltage stabilizing didoe D5, the power supply circuits input inserts mains supply, through resistance R 1 and capacitor C 1 current limliting step-down, diode D1, D2, D3, D4 rectification, again through voltage stabilizing didoe D5 voltage stabilizing, capacitor C 2 filtering are reduced to the direct current safe voltage with ac high voltage, hold to control circuit and switching circuit power supply by VCC.Originally executing in the example, power supply circuits output 6.2V direct voltage also can be adjusted output voltage according to actual conditions, but should be arranged within the scope of direct current safe voltage.
Adopt four diode D1, D2, D3, D4 to carry out rectification originally executing in the example power supply circuits, but those skilled in the art as can be known, also can adopt other mode rectification, with two diodes, is not limited to form shown in Figure 3 such as only.
Wherein switching circuit comprises trigger, K switch 10, capacitor C 14, C17, resistance R 12, R13, R14 and triode Q11, wherein trigger 4 pin and 10 pin are connected in series capacitor C 14 jointly, and by resistance R 13 serial connections 6 pin, 7 pin, 8 pin and 11 pin are ground connection again, capacitor C 14 positive poles and trigger 14 pin connect the VCC end, trigger 2 pin and 5 pin serial connection, 9 pin and 12 pin serial connection, 1 pin connects triode Q11 base stage by resistance R 14, resistance R 12 and capacitor C 17 are connected between trigger 3 pin and the ground, trigger 3 pin connect the VCC end by K switch 10, triode Q11 grounded emitter, collector electrode connect and drive and oscillating circuit; Thereby described switching circuit is by the saturation conduction of the upset control triode Q11 of trigger and by controlling and driving and oscillating circuit work.
Trigger adopts CD4013 type double D trigger in the present embodiment, K switch 10 adopts contact witch, but those of ordinary skill in the art as can be known, switching circuit also can adopt other version, such as double D trigger being made into d type flip flop or rest-set flip-flop, contact witch also can make touch switch or key switch into, is not limited to form shown in Figure 3.
Wherein driving and oscillating circuit comprise 555 chips, resistance R 15, R16 and capacitor C 15, C16, wherein 555 chips, 7 pin connecting resistance R15 and resistance R 16,1 pin is directly connected to triode Q11 collector electrode, 2 pin, 6 pin connect triode Q11 collector electrode by capacitor C 16 jointly, 5 pin connect triode Q11 collector electrode by capacitor C 15,4 pin and 8 pin connect the VCC end jointly, the output of 3 pin; Described driving and oscillating circuit are to produce pulsed dc voltage by 555 chips, are input to the calling circuit, make the calling circuit send calling signal by the frequency of pulse direct voltage.
Driving and oscillating circuit are to adopt 555 chips to produce pulsed dc voltage in the present embodiment, but those skilled in the art as can be known, and also available other modes constitute driving and oscillating circuit, are not limited to form shown in Figure 3.The frequency of pulsed dc voltage also can change, but should be arranged at least within the scope that is fit to eye-observation.
Drive in the present embodiment and 555 chips, the 3 pin sending and receiving optical diode LED10 of oscillating circuit and the current-limiting resistance R18 that is in series with LED 10 ground connection again, LED 10 provides the background pilot light for K switch 10, but and the root a tree name drives and the frequency of the pulsed dc voltage that oscillating circuit produces is glimmered to point out calling signal to send.Also can look actual conditions on the basis of LED 10 increases more light-emitting diode, and to strengthen the indication light intensity, also available other light-emitting components of LED 10 substitute.
Wherein call circuit to comprise LED 1 and LED 2, current-limiting resistance R9 and the loud speaker SP that is in series with current-limiting resistance R9, the pulsed dc voltage that calling circuit reception control circuit produces, again through LED 1, LED2 and loud speaker SP, send by the light of the frequency scintillation of pulse direct voltage and the tinkle of bells calling signal of interruption.
Wherein call LED 1 and also available other light-emitting components of LED 2 in the circuit to substitute, and the quantity of light-emitting component also can be according to the actual conditions adjustment.Also visual actual conditions increase more loud speaker.
Call circuit can send light and the tinkle of bells calling signal simultaneously in the present embodiment, also loud speaker SP can be removed, make the calling circuit only send the light calling signal, the staff also can in time provide service according to comparatively eye-catching blinking light calling signal.
The course of work of embodiment 1 is described in detail in detail below in conjunction with Fig. 3.
After the power supply circuits input is connected mains supply, through rectification, voltage stabilizing, filtering, output direct current 6.2V operating voltage, give switching circuit, driving and oscillating circuit and calling circuit supply, this moment, trigger was because zero clearing is forced in the effect of capacitor C 14 and resistance R 13, making 1 pin is low level, makes triode Q11 be in cut-off state; 1 pin of 555 chips and 5 pin then disconnect over the ground in driving and the oscillating circuit, 555 chips are quit work, but because LED 10 direct ground connection, so LED 10 conductings, the background pilot light that is K switch 10 is lighted, because the brightness of LED 10 is less, thereby can highlight in order to reflection ray at its outside installation one transparent medium or other devices, make the people can be easier to notice K switch 10, because 555 chips are not worked, 3 pin do not have level output, then call circuit to disconnect, and do not send calling signal.
When 10 controls of K switch are pressed, 10 controls of K switch conducting, because K switch 10 1 ends are to be connected to VCC, 3 pin of trigger can receive the rising edge triggering level of a positive potential, then trigger upset makes its 1 pin output high level, makes triode Q11 saturation conduction; Drive and oscillating circuit in 1 pin of 555 chips and 5 pin ground connection then, thereby the formation loop, 555 chips are started working, and make its 3 pin produce pulsed dc voltage, LED 10 is sending calling by the frequency scintillation of pulse direct voltage with prompting service calling system; The calling circuit is started working, LED 1 wherein, LED2 begin to send blinking light by the Frequency Synchronization of pulse direct voltage, thereby strengthen the brightness of blinking light in order to reflection ray at LED 1, LED2 outside installation transparent medium or other devices, make that the staff is more or less freely to notice the light alarm, loud speaker SP also begins to send by the frequency of pulse direct voltage the tinkle of bells alarm of interruption, and being convenient to the staff in time provides service.
When K switch 10 is controlled when pressing once more, K switch 10 is controlled conducting once more, 3 pin of trigger receive a positive potential rising edge triggering level once more, then trigger overturns once more, make its 1 pin output low level, triode Q11 is ended, 1 pin of 555 chips and 5 pin then disconnect over the ground, 555 chips are not worked, and LED 10 is earth-continuity still; Owing to drive and the oscillating circuit disconnection, no level output then calls circuit also not work, and does not send calling signal.
When having only 3 pin of trigger to receive a positive potential rising edge triggering level once more, circuit just enters next samsara again.
Below in conjunction with Fig. 4 and Fig. 5 in detail, the circuit structure of the utility model embodiment 2 is described in detail.
The circuit structure of embodiment 2 comprises: power supply circuits, switching circuit, single chip machine controlling circuit and calling circuit, wherein the power supply circuits input is connected to mains supply, output is connected to single-chip microcomputer 4 pin and 14 pin, switch control single chip computer work by switching circuit, make single-chip microcomputer 13 pin generation pulsed dc voltage and be connected to the calling circuit, make the calling circuit send blinking light and be interrupted the tinkle of bells calling signal according to the frequency of pulsed dc voltage.
Wherein power supply circuits comprise resistance R 1, capacitor C 1, C2, diode D1, D2, D3, D4 and voltage stabilizing didoe D5, the power supply circuits input inserts mains supply, through resistance R 1 and capacitor C 1 current limliting step-down, diode D1, D2, D3, D4 rectification, again through voltage stabilizing didoe D5 voltage stabilizing, capacitor C 2 filtering are reduced to the direct current safe voltage with ac high voltage, hold to control circuit and switching circuit power supply by VCC.Originally executing in the example, power supply circuits output 5V direct voltage also can be adjusted output voltage according to actual conditions, but should be arranged within the scope of direct current safe voltage.
Adopt four diode D1, D2, D3, D4 to carry out rectification originally executing in the example power supply circuits, but those skilled in the art as can be known, also can adopt other mode rectification, with two diodes, is not limited to form shown in Figure 5 such as only.
Wherein single chip machine controlling circuit comprises single-chip microcomputer, crystal oscillator Y21, capacitor C 23, C24, resistance R 22, R23, triode Q21, single-chip microcomputer 15 foot meridian capacitor C23 ground connection, single-chip microcomputer 16 foot meridian capacitor C24 ground connection, the direct ground connection of single-chip microcomputer 5 pin, crystal oscillator Y21 two ends connect single-chip microcomputer 15 pin and 16 pin respectively, for single-chip microcomputer provides oscillation frequency clock, single-chip microcomputer 4 pin, 14 pin and triode Q21 collector electrode meet VCC and hold 13 pin output pulsed dc voltage and connect triode Q21 base stage by resistance R 22, triode Q21 emitter is connected to the calling circuit, the saturation conduction of single-chip microcomputer 13 pin by control triode Q21 with end, thereby control calling circuit working; Switching circuit comprises K switch 20 that is connected to the VCC end and the resistance R 24 of connecting with K switch 20, and single-chip microcomputer 1 pin is connected to K switch 20, and by resistance R 24 ground connection, works by the external command control single chip computer that K switch 20 produces.
Single-chip microcomputer adopts EM78P156EM type single-chip microcomputer in the present embodiment, also can change the single-chip microcomputer of other suitable types into.K switch 20 adopts contact witch, also can change touch switch or key switch into.The present technique field those of ordinary skill frequency of pulsed dc voltage as can be known can change by the single-chip microcomputer internal processes is set, but should be arranged at least within the scope that is fit to eye-observation.
3 pin of single-chip microcomputer connect triode Q22 base stage by resistance R 23 in the present embodiment, 4 pin and 14 pin connect triode Q22 collector electrode, triode Q22 emitter is by LED 20 ground connection, LED 20 provides the background pilot light for K switch 20, and can glimmer according to the frequency of the pulsed dc voltage of single-chip microcomputer 3 pin output and send with the prompting calling signal.Can look actual conditions on the basis of LED 20 increases more light-emitting diode, and to strengthen the indication light intensity, also available other light-emitting components of LED 20 substitute.
Wherein call circuit to comprise LED 1 and LED 2, current-limiting resistance R9 and the loud speaker SP that is in series with current-limiting resistance R9, the pulsed dc voltage that calling circuit reception control circuit produces, again through LED 1, LED2 and loud speaker SP, send by the light of the frequency scintillation of pulse direct voltage and the tinkle of bells calling signal of interruption.
Wherein call LED 1 and also available other light-emitting components of LED 2 in the circuit to substitute, and the quantity of light-emitting component also can be according to the actual conditions adjustment.Also visual actual conditions increase more loud speaker.
Call circuit can send light and the tinkle of bells calling signal simultaneously in the present embodiment, also loud speaker SP can be removed, make the calling circuit only send the light calling signal, the staff also can in time provide service according to comparatively eye-catching blinking light calling signal.
Below in conjunction with Fig. 5 in detail, the course of work of the utility model embodiment 2 is described in detail.
After power supply circuits are connected mains supply, through rectification, voltage stabilizing, filtering, output direct current 5V operating voltage, to the single-chip microcomputer power supply, the single-chip microcomputer oscillating circuit provides oscillation frequency clock for single-chip microcomputer, is provided with according to the single-chip microcomputer internal processes, make its 3 pin export high level in initial condition, make triode Q22 be in the saturation conduction state, thus LED 20 conductings, and promptly the background pilot light of K switch 20 is lighted; And make single-chip microcomputer 13 pin in the initial condition output low level, and make triode Q21 be in cut-off state, the calling circuit disconnects, and does not send calling signal.Because the brightness of LED 20 is less, thereby can highlight in order to reflection ray, make the people can be easier to notice K switch 20 at its outside installation one transparent medium or other devices.
When 20 controls of K switch are pressed, 20 controls of K switch conducting, single-chip microcomputer 1 pin receives positive potential rising edge triggering level, then root a tree name single-chip microcomputer internal processes is provided with, make single-chip microcomputer 3 pin output pulsed dc voltage, make triode Q22 by the frequency saturation conduction of pulse direct voltage with end, thereby LED 20 begins the frequency scintillation by the pulse direct voltage, the prompting calling system is sending calling signal, single-chip microcomputer 13 pin output pulsed dc voltage, make triode Q21 by the frequency saturation conduction of pulse direct voltage with end, the calling circuit is started working, LED 1, LED2 begins to send blinking light by the frequency of pulse direct voltage, at LED 1, thereby LED2 outside installation transparent medium or other devices strengthen the brightness of blinking light in order to reflection ray, make that the staff is more or less freely to notice the light alarm, loud speaker SP also begins to send by the frequency of pulse direct voltage the tinkle of bells alarm of interruption, and being convenient to the staff in time provides service.
When K switch 20 is controlled when pressing once more, K switch 20 is controlled conducting once more, single-chip microcomputer 1 pin receives positive potential rising edge triggering level once more, then root a tree name single-chip microcomputer internal processes is provided with, make single-chip microcomputer 3 pin export high level once more, make triode Q22 be in the saturation conduction state, thus still conducting of LED 20, i.e. the background pilot light Chang Liang of K switch 20; Make single-chip microcomputer 13 pin output low level once more, make triode Q21 be in cut-off state, thereby the calling circuit disconnects, and stops to send calling signal.
When having only 1 pin of single-chip microcomputer to receive a positive potential rising edge triggering level once more, circuit just enters next samsara again.
Claims (10)
1, a kind of service calling system that is used for service industry is characterized in that, described service calling system comprises power supply circuits, control circuit and calling circuit; Wherein the power supply circuits input is connected to mains supply, and output is connected to the control circuit input, is used for mains voltage is reduced within the scope of direct current safe voltage, and provides operating voltage for control circuit and switching circuit; Described control circuit output termination calling circuit input end is used to produce pulsed dc voltage; Described calling circuit sends calling signal by the frequency of the pulsed dc voltage that control circuit produces.
2, the service calling system that is used for service industry as claimed in claim 1, it is characterized in that, described power supply circuits comprise resistance R 1, capacitor C 1, C2, diode D1, D2, D3, D4 and voltage stabilizing didoe D5, the power supply circuits input inserts mains supply, through resistance R 1 and capacitor C 1 current limliting step-down, diode D1, D2, D3, D4 rectification, again through voltage stabilizing didoe D5 voltage stabilizing, capacitor C 2 filtering, ac high voltage is reduced to the direct current safe voltage, hold to control circuit and switching circuit power supply by VCC.
3, the service calling system that is used for service industry as claimed in claim 1 or 2 is characterized in that, described control circuit comprises switching circuit and driving and oscillating circuit.
4, the service calling system that is used for service industry as claimed in claim 3, it is characterized in that, described switching circuit comprises trigger, K switch 10, capacitor C 14, C17, resistance R 12, R13, R14 and triode Q11, wherein trigger 4 pin and 10 pin are connected in series capacitor C 14 jointly, and by resistance R 13 serial connections 6 pin, 7 pin, 8 pin and 11 pin are ground connection again, capacitor C 14 positive poles and trigger 14 pin connect the VCC end, trigger 2 pin and 5 pin serial connection, 9 pin and 12 pin serial connection, 1 pin connects triode Q11 base stage by resistance R 14, resistance R 12 and capacitor C 17 are connected between trigger 3 pin and the ground, trigger 3 pin connect the VCC end by K switch 10, triode Q11 grounded emitter, collector electrode connect and drive and oscillating circuit; Thereby described switching circuit is by the saturation conduction of the upset control triode Q11 of trigger and by controlling and driving and oscillating circuit work.
5, the service calling system that is used for service industry as claimed in claim 3, it is characterized in that, described driving and oscillating circuit comprise 555 chips, resistance R 15, R16 and capacitor C 15, C16, wherein 555 chips, 7 pin connecting resistance R15 and resistance R 16,1 pin is directly connected to triode Q11 collector electrode, and 2 pin, 6 pin connect triode Q11 collector electrode by capacitor C 16 jointly, and 5 pin connect triode Q11 collector electrode by capacitor C 15,4 pin and 8 pin connect the VCC end jointly, the output of 3 pin; Described driving and oscillating circuit are to produce pulsed dc voltage by 555 chips, are input to the calling circuit, make the calling circuit send calling signal by the frequency of pulse direct voltage.
6, the service calling system that is used for service industry as claimed in claim 5, it is characterized in that, 555 chips, the 3 pin sending and receiving optical diode LED10 of described driving and oscillating circuit and the current-limiting resistance R18 that is in series with LED 10 be ground connection again, LED 10 provides the background pilot light for K switch 10, but and the root a tree name drives and the frequency of the pulsed dc voltage that oscillating circuit produces is glimmered to point out calling signal to send.
7, the service calling system that is used for service industry as claimed in claim 1, it is characterized in that, described calling circuit comprises LED 1 and LED 2, current-limiting resistance R9 and the loud speaker SP that is in series with current-limiting resistance R9, the pulsed dc voltage that calling circuit reception control circuit produces, again through LED 1, LED2 and loud speaker SP, send by the light of the frequency scintillation of pulse direct voltage and the tinkle of bells calling signal of interruption.
8, the service calling system that is used for service industry as claimed in claim 1 or 2 is characterized in that described control circuit comprises single chip machine controlling circuit and switching circuit.
9, the service calling system that is used for service industry as claimed in claim 8, it is characterized in that, described single chip machine controlling circuit comprises single-chip microcomputer, crystal oscillator Y21, capacitor C 23, C24, resistance R 22, R23, triode Q21, single-chip microcomputer 15 foot meridian capacitor C23 ground connection, single-chip microcomputer 16 foot meridian capacitor C24 ground connection, the direct ground connection of single-chip microcomputer 5 pin, crystal oscillator Y21 two ends connect single-chip microcomputer 15 pin and 16 pin respectively, for single-chip microcomputer provides oscillation frequency clock, single-chip microcomputer 4 pin, 14 pin and triode Q21 collector electrode connect the VCC end, 13 pin are exported pulsed dc voltage and are connect triode Q21 base stage by resistance R 22, triode Q21 emitter is connected to the calling circuit, the saturation conduction of single-chip microcomputer 13 pin by control triode Q21 with end, thereby control calling circuit working; Described switching circuit comprises K switch 20 that is connected to the VCC end and the resistance R 24 of connecting with K switch 20, and single-chip microcomputer 1 pin is connected to K switch 20, and by resistance R 24 ground connection, works by the external command control single chip computer that K switch 20 produces.
10, the service calling system that is used for service industry as claimed in claim 9, it is characterized in that, 3 pin of described single-chip microcomputer connect triode Q22 base stage by resistance R 23,4 pin and 14 pin connect triode Q22 collector electrode, triode Q22 emitter is by LED 20 ground connection, LED 20 provides the background pilot light for K switch 20, and can glimmer according to the frequency of the pulsed dc voltage of single-chip microcomputer 3 pin output and send with the prompting calling signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017703 CN2935708Y (en) | 2006-08-10 | 2006-08-10 | Service calling system for service industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017703 CN2935708Y (en) | 2006-08-10 | 2006-08-10 | Service calling system for service industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2935708Y true CN2935708Y (en) | 2007-08-15 |
Family
ID=38352389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620017703 Expired - Fee Related CN2935708Y (en) | 2006-08-10 | 2006-08-10 | Service calling system for service industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2935708Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438347A (en) * | 2010-11-30 | 2012-05-02 | 苏州荣文库柏照明系统有限公司 | Flasher circuit |
-
2006
- 2006-08-10 CN CN 200620017703 patent/CN2935708Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438347A (en) * | 2010-11-30 | 2012-05-02 | 苏州荣文库柏照明系统有限公司 | Flasher circuit |
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