CN2327122Y - Telephone number-checking device - Google Patents
Telephone number-checking device Download PDFInfo
- Publication number
- CN2327122Y CN2327122Y CN 98226324 CN98226324U CN2327122Y CN 2327122 Y CN2327122 Y CN 2327122Y CN 98226324 CN98226324 CN 98226324 CN 98226324 U CN98226324 U CN 98226324U CN 2327122 Y CN2327122 Y CN 2327122Y
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- China
- Prior art keywords
- circuit
- phone
- telephone
- buzzerphone
- electronic switching
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- Expired - Fee Related
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Abstract
The utility model discloses a telephone number checking device, and a number checking controlling circuit composed of an input plugging socket, a number receiving circuit, a microprocessor circuit, a storage device circuit, an output plugging socket, a rectification voltage stabilizing circuit, an electric switching circuit and an energy storing circuit is arranged in the shell body of the telephone number checking device. The telephone number checking device does not need to be provided with another power supply during the using process and has stable performance. The telephone number checking device can arrange a number being allowed to be called or a calling number through a visual monitor and is very convenient, economic and practical. When a telephone is matched with the telephone number checking device, the telephone can call the number only when the calling number and the number being allowed to be called arranged by the owner of the telephone are coincident. The telephone number checking device is quite suitable for places needing to control the calling number such as the gate keeper office, the family having the nonage child, etc.
Description
The utility model relates to a kind of supporting management equipment of telephone set, belongs to the post and telecommunication facilities technical field.
The continuous development of human society makes phone become the necessity of modern people's work, study, life gradually.Along with popularizing rapidly of phone, the scientific management of telephone set receives publicity day by day.For effectively utilize phone, reasonable limits is arbitrarily dialed, people develop phone dialing limiter (being commonly called as telephone lock).The limit that the housing of this dialing limiter contains input socket, the circuit that collects the digits, microcontroller circuit, memory circuitry, relay switch circuit, power circuit, accessory power outlet are formed is dialled control circuit.During use, the dialing limiter input socket machine of answering the call, the accessory power outlet line of answering the call.Behind the number input dialing limiter that telephone set is transferred to, the circuit that collects the digits is sent to microprocessor, by the dail-limiting number that is provided with in microprocessor and the memory relatively.Have only when the take charge dail-limiting number that sets earlier of dialing and machine and just can get when inconsistent, otherwise microprocessor will cut off the relay switch circuit, and phone is not shown.This existing dialing limiter is except that the line of answering the call, and no matter distribution source in addition, and do not have display unit is that number is set, and still number dialing telephone call has inconvenience all more, so it is applied and is restricted.
For this reason, main purpose of the present utility model is: at above-mentioned the deficiencies in the prior art part, propose a kind of other distribution source that need not and can guarantee that telephone set can only dial fair dialling the number and the phone buzzerphone of dependable performance.In addition, number and number dialing telephone call are set for convenience, the further purpose of the utility model is: propose a kind of phone buzzerphone that number or dialing numbers can be set by vision monitoring.
In order to realize above-mentioned main purpose, the housing of the utility model phone buzzerphone contains input socket, circuit collects the digits, microcontroller circuit, memory circuitry, accessory power outlet, also contain regulator rectifier circuit, electronic switching circuit, energy storage circuit, described regulator rectifier circuit, electronic switching circuit is serially connected between input socket and the accessory power outlet, with the circuit that collects the digits, microcontroller circuit, the memory circuitry parallel connection, described electronic switching circuit is mainly by electronic switching element, photoelectrical coupler constitutes, described energy storage circuit mainly is made of isolating diode and energy storage capacitor series connection, the output of described photoelectrical coupler is connected across between the control utmost point and output stage of electronic switching element, the input anode of this photoelectrical coupler connects between isolating diode and the energy storage capacitor, negative pole connects the control pin of microprocessor, and the positive pole of isolating diode connects the positive pole of regulator rectifier circuit.
In order to reach the further purpose of the utility model, the phone buzzerphone also contains liquid crystal display circuit, and this circuit connects the shows signal output pin of microprocessor as the display terminal of microprocessor.
During use, phone buzzerphone of the present utility model is connected between telephone set and the telephone wire, and behind user's off-hook, regulator rectifier circuit directly offers the circuit that collects the digits, microprocessor, memory after the current commutates with telephone wire, guarantee that it can operate as normal, charge to energy storage circuit simultaneously.After the subscriber dialing, the circuit that collects the digits send microprocessor with dialing, and by the fair marking sign indicating number that is provided with in microprocessor and the memory relatively, the result just can get when consistent.Otherwise the control pin of microprocessor makes the input conducting of photoelectrical coupler with output low level, thereby by electronic switching element, cuts off the communication between telephone set and the telephone wire, and phone is not shown.After user's on-hook, the energy storage capacitor discharge under the situation of not having extraneous power supply, within a certain period of time, replaces the voltage stabilizing rectification circuit, still keeps the phone buzzerphone in running order.During this period, effect anti-interference, that avoid misoperation that photoelectrical coupler and energy storage circuit have all played, thus guarantee that the phone buzzerphone is stable and reliable for performance.Hence one can see that, and the phone buzzerphone directly utilizes the electric energy of telephone wire, need not other distribution source, and circuit structure is simple, and is economical and practical, stable and reliable for performance.And no matter be that fair marking sign indicating number is set, or number dialing telephone call, can pass through vision monitoring, very convenient to use.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the circuit diagram of an embodiment of the utility model.
Phone buzzerphone shown in Figure 1 mainly is made of input socket X1, the circuit 5 that collects the digits, microcontroller circuit 4, memory circuitry 6, accessory power outlet X2, regulator rectifier circuit 1, electronic switching circuit 2, energy storage circuit 3, liquid crystal display socket X3.Regulator rectifier circuit 1, electronic switching circuit 2 are serially connected between input socket X1 and the accessory power outlet X2, and be in parallel with the circuit 5 that collects the digits, microcontroller circuit 5, memory circuitry 6.Regulator rectifier circuit 1 is the bridge rectifier voltage stabilizing circuit that rectifier diode D1-D4 and voltage stabilizing didoe U1 constitute.Electronic switching circuit 2 mainly is made up of switch triode S1 and photoelectrical coupler O1.Energy storage circuit is made of isolating diode D6, current-limiting resistance R3 and energy storage capacitor E1 series connection.The output of photoelectrical coupler O1 is connected across between the base stage and emitter of switch triode S1, and its input anode connects between the current-limiting resistance R3 and energy storage capacitor E1 behind the isolating diode D6, and negative pole connects the control pin 21 of microprocessor through current-limiting resistance R5.Cross-over connection has biasing resistor R1 between the collector electrode of switch triode S1 and the base stage, and its emitter connects collector electrode through light-emitting diode V1, the diode D5 of series connection, the other bypass resistance R2 in parallel of light-emitting diode.The positive pole of isolating diode D6 meets the anodal VDD of regulator rectifier circuit.Liquid crystal display socket X3 connects the shows signal output pin 11 of microprocessor as the display terminal of microprocessor.In addition, also contain piezo-resistance Y1 in this phone buzzerphone, this resistance is in parallel with regulator rectifier circuit 1, is connected between input socket X1 and the regulator rectifier circuit 1, can play the short-circuit protection effect when the phone buzzerphone boosts suddenly because of accidental causes such as thunderbolts.
The phone buzzerphone of present embodiment can preset 100 fair marking sign indicating numbers.The experiment proved that it is stable and reliable for performance, safe and convenient to use, be highly suitable for the entrance guard chamber, have teenage children family etc. to need the occasion of control dialing numbers.
Claims (5)
1. phone buzzerphone, its housing contains input socket (X1), circuit (5) collects the digits, microcontroller circuit (4), memory circuitry (6), accessory power outlet (X2), it is characterized in that: also contain regulator rectifier circuit (1), electronic switching circuit (2), energy storage circuit (3), described regulator rectifier circuit (1), electronic switching circuit (2) is serially connected between input socket (X1) and the accessory power outlet (X2), with the circuit that collects the digits (5), microcontroller circuit (4), memory circuitry (6) parallel connection, described electronic switching circuit (2) is mainly by electronic switching element (S1), photoelectrical coupler (O1) constitutes, described energy storage circuit (3) mainly is made of isolating diode (D6) and energy storage capacitor (E1) series connection, the output of described photoelectrical coupler (O1) is connected across between the control utmost point and output stage of electronic switching element (S1), the input anode of this photoelectrical coupler (O1) connects between isolating diode (D6) and the energy storage capacitor (E1), negative pole connects the control pin of microprocessor, and the positive pole of isolating diode (D6) connects the positive pole of regulator rectifier circuit (1).
2. phone buzzerphone according to claim 1 is characterized in that: also contain liquid crystal display circuit, described liquid crystal display circuit connects the shows signal output pin of microprocessor as the display terminal of microprocessor.
3. phone buzzerphone according to claim 1 and 2, it is characterized in that: described electronic switching element is switch triode (S1), the output of described photoelectrical coupler (O1) is connected across between the base stage and emitter of switch triode (S1), cross-over connection has biasing resistor (R1) between the collector electrode of described switch triode (S1) and the base stage, its emitter connects collector electrode through light-emitting diode (V1), the diode (D5) of series connection, the other bypass resistance in parallel (R2) of light-emitting diode.
4. phone buzzerphone according to claim 1 and 2 is characterized in that: described regulator rectifier circuit (1) is the bridge rectifier voltage stabilizing circuit that four rectifier diodes (D1-D4) and voltage stabilizing didoe (U1) constitute.
5. phone buzzerphone according to claim 1 is characterized in that: also contain piezo-resistance (Y1), described piezo-resistance is in parallel with regulator rectifier circuit (1), is connected between input socket (X1) and the regulator rectifier circuit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226324 CN2327122Y (en) | 1998-03-30 | 1998-03-30 | Telephone number-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226324 CN2327122Y (en) | 1998-03-30 | 1998-03-30 | Telephone number-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2327122Y true CN2327122Y (en) | 1999-06-30 |
Family
ID=33976862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98226324 Expired - Fee Related CN2327122Y (en) | 1998-03-30 | 1998-03-30 | Telephone number-checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2327122Y (en) |
-
1998
- 1998-03-30 CN CN 98226324 patent/CN2327122Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |