CN2045558U - Trunk type calling and speaking apparatus between principal and subordinate - Google Patents
Trunk type calling and speaking apparatus between principal and subordinate Download PDFInfo
- Publication number
- CN2045558U CN2045558U CN 88203508 CN88203508U CN2045558U CN 2045558 U CN2045558 U CN 2045558U CN 88203508 CN88203508 CN 88203508 CN 88203508 U CN88203508 U CN 88203508U CN 2045558 U CN2045558 U CN 2045558U
- Authority
- CN
- China
- Prior art keywords
- exhaling
- electrophone
- switch
- power supply
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The utility model discloses a trunk type calling and speaking apparatus between a principal and a subordinate, composed of a master controller (M), a selector (S), a coincidence apparatus (C), a called handset (H) and a common twisted pair wire. The calling and speaking apparatus is suitable for being used for dispatching commands of the industrial and mining establishments, the enterprises and schools, the hospitals and the emporiums and the on-site switching of the calling and outgoing calling out of the local call or the long-distance call of the residential districts, the hotels, the hostels, etc. The calling and speaking apparatus shortens the line-busy time of the telephone network when a call calls in so as to enhance the efficiency of the communication, the speaking distance of the apparatus is a plurality of kilometer, and the wire laying length is as longer as more than ten kilometers. The utility model is characterized in that the calling and speaking apparatus uses one common twisted wire to connect to ten hundreds of users' transmitting and receiving apparatuses and has more advantages than a system that each user's transmitting and receiving apparatus respectively uses a pair of lines so as to save the investment of the line by more than 95%.
Description
The present invention relates to the talkback unit of a kind of main controller calling party or customer call main controller.
Traditional call talkback unit adopts the star topological structure, contains a master station and a plurality of subscriber station, and each uses a pair of private line access between master station and each subscriber station.This type systematic majority is initiated main exhaling by master station, and subscriber station is accepted and response.The intercom system that also has master station and subscriber station to make a call.This system need arrange numerous industrial sidings or multicore cable, invests greatly, lays tired.
It is a kind of by each telephone system of computer control that U.S. Pat 4262171 provides, and on a bus, presses the conversation between frequency division multiplexing realization telephone set, frequency-selecting equipment is set, so the investment cost height.
The little switching system that DRP DE2937339 provides family or Work Telephone machine to expand is transferred to one or all telephone sets that is expanded to outside line.But this system just is applicable to a small amount of phone, as 4 expansion.
The object of the present invention is to provide and a kind ofly take over a user or connect master station by arbitrary user and carry out dedicated secret intercommunication, economic, easy, practical bus type talkback unit by master station choosing.
The drawing explanation
Fig. 1 is a bus-type master-slave mutual-call talkback unit wiring topology.The M-main controller; The S-line adapter unit; S
i-Di i line adapter unit, (i=1,2 ... I); A
Si-Di i line adapter unit (S
i) switch; The C-coincidence apparatus; C
Ij-Di i line adapter unit (S
i) j follow-up coincidence apparatus, (j=1,2 ... J); A
CkK switch (k=1,2 in the-line adapter unit (C) ... K); H-user's electrophone; H
Ijk-Di ijk user's electrophone; D
u-user diode; A
u-subscriber switch; UA
Ijk-Di ijk user's switch; H
O-main electrophone handset; The P-telephone set; H
1The electrophone of-telephone set (P); The L-bus.
Fig. 2 is the bus-type master-slave mutual-call talkback unit that does not have line adapter unit (S).H
Jk-Di j line adapter unit (C
j) k interior user's electrophone.All the other the same figure.
Fig. 3 is the theory diagram of main controller (M).The M1-numeric keypad; The M2-coding circuit; The M3-single-chip microcomputer; The M4-read-only memory; The M5-display driver circuit; The M6-charactron; M7-master exhales power supply; M8-numerical selection/phonetic function switch (A
1); The M9-choke; M10-waits and exhales power supply; M11-waits and exhales device; The M12-coupler; A
O-off-hook switch; A
2-challenge switch; A
3-coupled switch.All the other the same figure.
Fig. 4 is numerical selection pulse train (Q) and automatic call pulse sequence (Q
d).Q
S-choosing connects pulse train; Q
C-coincidence pulse sequence; T-moves at interval; The h-control bit; The binary bit pulse of the corresponding line adapter unit of i-(S) number; The binary bit pulse of the corresponding coincidence apparatus of j-(C) number; The binary bit pulse of the switch number in the k-coincidence apparatus (C); The every bit time width of t-; t
OThe low level width of-data " O "; t
1The low level width of-data " 1 ";
Fig. 5 waits to exhale device (M11) theory diagram.The M11a-detector; The M11b-wave detector; M11c-is single from exhaling this schmitt trigger; M11d-is many from exhaling this schmitt trigger; M11e-and door; The M11f-relay.
Fig. 6 is line adapter unit (S) theory diagram.S1-power supply separator; The S2-voltage divider; The S3-monostable flipflop; The S4-shift register; The S5-initializing circuit; S6-wire jumper not gate; The S7-decoder; S8-or door; F
S-R-S trigger; The S9-driver; The S10-relay; D
S-from exhaling diode; Y
S-from exhaling memory; Y
Si-Di i line adapter unit (S
i) from exhaling memory; D
1-protection diode; A
Si-Di i line adapter unit (S
i) switch.
Fig. 7 is coincidence apparatus (C) theory diagram.C
1-C
6Same S
1-S
6C
7-Gao bit decoder; C
8-low bit decoder; C91～C9K-the 1st to K decoding output or door; F
C1～F
CK-Di 1 is to K R-S trigger; C
101～C
10K-Di 1 is to K driver; A
C1～A
CK-Di 1 is to K coincidence apparatus switch; Y
C1～Y
CK-Di 1 to K is individual from exhaling memory; D
C1～D
CK-Di 1 to K is individual from exhaling diode; D
2-protection diode.
Fig. 8 is the enforcement figure of main controller (M).The Z-power transformer; N
1, P
1-main line bag and rectifier of exhaling power supply (M7); BG2-master exhales the switch modulation pipe of power supply; The switch driver of BG1-numerical selection pulse train (Q) and call pulse; N
2, P
2Bias line bag and the rectifier of-BG2; X
1And A
1The relay line bag and the switch of-numerical selection/phonetic function switch; N
3, P
3-from exhaling the line bag and the rectifier of power supply (M10); R25-waits the detector (M11a) of exhaling device (M11); R
26, D
25, C '
7, C '
8The element of-composition wave detector (M11b); R
27, R
28The resistance that-incoming level is regulated; CH
1, CH
2, BG
3-oscillator and follower.
Fig. 9 is the enforcement figure of line adapter unit (S).The emitter follower of BG30-power supply separator (S1); R
32, R
33-resitstance voltage divider (S2); NAND gate S3a, S3b, and C '
31, R
34Device, the element of-monostable flipflop (S3); S4-four bit shift register; S7-makes 4 NAND gate of decoder; C '
32, R35-initializing circuit (S5), BG31-driver (S9), X
S, A
SThe line bag and the switch of-pole spring relay; Z
S-memory (Y
S) the detection transformer; D31, C ' 33-forms the element of detection; R38,, the resistance of R39-offset level, all the other marks are identical with Fig. 6.
Figure 10 is coincidence apparatus (C) and user's electrophone (H).C1～C3, C5～C7 is with S1～S3 of Fig. 9, S5～S7; C4-eight bit shift register; C8-makes the decoder of the interior switch number decoding of coincidence apparatus (C) usefulness; Z
C1～Z
C7-Di 1 is to the transformer of the 7th memory (YC1～YC7); D60～D66, C '
61～C '
67The element of the 1st to the 7th wave detector of-composition; R78, R79-common bias resistance.(V
u) be user's oscillator.
Below in conjunction with description of drawings detailed content of the present invention.
Bus-type master-slave mutual-call talkback unit as shown in Figure 1 contains a main controller (M), I line adapter unit (S) that disperses, I * J coincidence apparatus (C), I * J * K user's electrophone (H), and the bus (L) of a public twisted wire.
According to the quantity of wiring topology and user's electrophone (H), can adopt a plurality of line adapter units (S) that are provided with shown in Figure 1, or the line adapter unit that is not provided with shown in Figure 2.Also multi-level line adapter unit can be set.
This device has two kinds of modes of initiating intercommunications, and a kind of is that master by the arbitrary user of main controller selective call exhales mode, another kind be by arbitrary customer call main controller from exhaling mode.
With a public twisted-pair feeder is bus, the structure of main controller (M) and operation principle thereof are as shown in Figure 3, it contains a numeric keypad (M1), a keyboard-coding circuit (M2), a slice single-chip microcomputer or microprocessor (M3), a slice read-only memory (M4), a display driver circuit (M5), a charactron (M6), a master exhales power supply (M7), a numerical selection/phonetic function switch (M8), an audio frequency choke (M9), a time is exhaled power supply (M10), and a time is exhaled device (M11), an off-hook switch (A
O), a main electrophone handset (H
O), a coupler (M12).
Initiate main exhaling, plucked main electrophone handset (H earlier
O), loosen off-hook switch (A
O), the master exhales power supply (M7) through off-hook switch (A
O) connection interchange or direct current supply, bus (L) breaks away from time and exhales power supply (M10) and receive the main power supply (M7) of exhaling, numerical selection/phonetic function switch (M8) is in the numerical selection state at ordinary times, bus (L) top and main exhale choke (M9) between power supply (M7) by short circuit.
Every pair of keyboard is keyed in and is exhaled electrophone (H
Ijk) one ten advance number, (M2) converts parallel binary code to by the keyboard-coding circuit, send single-chip microcomputer (M3).The monitoring program of read-only memory (M4) is read in internal memory to binary code, and delivers to display driver circuit (M5), is shown by charactron (M6).Key is finished quilt and is exhaled electrophone (H
Ijk) the multidigit decimal code, (M3) converts corresponding internal code ijk to by single-chip microcomputer, and weaves into the numerical selection pulse train (Q) that sets form, input is main exhales power supply (M7) to carry out switch modulation, forms required numerical selection ripple (W).
When numerical selection, directly the numerical selection ripple (W) of feed-in bus (L) acts on each line adapter unit (S) operation that elects, the line adapter unit (S that closure is selected
i) switch (A
Si).Again numerical selection ripple (W) is guided into this line adapter unit (S
i) each coincidence apparatus (C on the follow-up bus
I1～C
IJ), make match operation, closed coincidence apparatus (C
Ij) an interior switch (A
Ck), being exhaled electrophone (H
Ijk) be connected on the bus (L), the numerical selection process finishes.
Single-chip microcomputer (M3) is exported interrupted calling sequence (Q immediately
d), make and exhaled electrophone (H
Ijk) send ring tone automatically.After this also can press arbitrary numerical key and send manual call pulse.Arrive automatic call pulse sequence (Q in numerical selection pulse train (Q)
d) and during manual call pulse, single-chip microcomputer (M3) makes numerical selection/phonetic function switch (M8) be in numerical selection state at ordinary times; When call pulse finishes, be in voice status, at the top of bus (L) with lead to exhale and seal in audio frequency choke (M9) between power supply (M7), set up voice signal channel transmitted environment.Main electrophone handset (H
O) and exhaled electrophone (H
Ijk) between just can carry out intercommunication by bus (L).Intercommunication can not be got involved or eavesdrop by other users in the system.
Exhale state in time at ordinary times, rest the main electrophone handset (H on the main controller (M)
O) depress off-hook switch (A
O), cut off main interchange or direct current supply of exhaling power supply (M7), and bus (L) breaks away from and mainly exhales power supply (M7) and receive from exhaling power supply (M10).Bus (L) two ends from exhaling power supply (M10) polarity to exhale power supply (M7) opposite with main.As have no way of exhaling initiation, bus (L) loop to be high resistant disconnection, several no currents.
Initiate from exhaling as user, bus (L) circuit closed, wait exhale that power supply (M10) flows out from exhaling electric current, makes to wait and exhale device (M11) action, and temporary memory is from exhaling history, closed challenge switch (A
2), exhale time power supply to deliver to main electrophone handset (H
O), send ring tone.The master control operator has plucked main electrophone handset (H on hearing the news
O), the main power supply (M7) of exhaling is to each line adapter unit (S) power supply, and closure has from exhaling the line adapter unit (S of memory
i) switch (A
Si), each the coincidence apparatus (C on its follow-up bus
I1～C
IJ) power supply, closure has from exhaling the coincidence apparatus (C of memory
Ij) switch (A
Ck), being exhaled electrophone (H
Ijk) be connected to bus (L).Single-chip microcomputer (M3) test time exhale device (M11) temporarily from exhaling memory, produce number and be the numerical selection pulse train (Q) and the numerical selection ripple (W) of " 0 " entirely, seal the logical circuit and the line adapter unit (S of all line adapter units (S)
i) all follow-up coincidence apparatus (C
I1～C
IJ) logical circuit, make numerical selection/linguistic function switch switch to voice status then.Main electrophone handset (H
O) exhaled electrophone (H with quilt
Ijk) between provide can not be by the intercommunication that other users eavesdropped or got involved in the system.
As the electrophone (H of telephone set (P)
1) with coupler (M12) utter a word, magnetic, the electricity coupling, can realize the incoming call of city or toll telephone or the switching on the spot of exhalation.And by the state of luminous tube indication intercommunication.
The numerical selection pulse train (Q) of Fig. 4 comprises that choosing meets pulse train (Q
S), action at interval (T) and coincidence pulse sequence (Q
C).Choosing meets pulse train (Q
S) corresponding to being exhaled electrophone (H
Ijk) binary code i, these binary bits and line adapter unit (S
i) number corresponding.Meet pulse train (Q corresponding to choosing in the numerical selection ripple (W)
S) the choosing that is called meet ripple (W
S), it does decoded operation by line adapter unit (S), the line adapter unit (S in translating
i) closed its switch (A that is connected in series with bus
Si), connect follow-up bus, the remainder in the feed-in numerical selection ripple (W).
Coincidence pulse sequence (Q
C) corresponding to being exhaled electrophone (H
Ijk) j and the binary code of k, its high-order j is corresponding with the number of coincidence apparatus (C), the switch number of the driver (C10) in its low level k and the coincidence apparatus (C) is corresponding.In the numerical selection ripple (W) corresponding to coincidence pulse sequence (Q
C) title meet ripple (W
C), it makes coincidence apparatus (C
I1～C
IJ) do decoded operation, closure is exhaled coincidence apparatus (C
Ij) in the switch (A in translating
Ck), being exhaled electrophone (H
Ijk) receive main controller (M) through bus (L).
Action (T) is at interval stablized the required time from line adapter unit (S) end-of-shift to the power logic circuitry of coincidence apparatus (C).
For the pulse of baseband transmission, two value representations of binary number can adopt pulse width modulation shown in Figure 4, are " 1 " with low level a kind of width means, and another kind of width means is " O ", and every binary bit finishes, and all is returned to power level.Also can adopt every to be that leading, the index of modulation is 1 pulse amplitude modulation with lock-out pulse.
It is a D.C. regulated power supply that the master exhales power supply (M7), and is subjected to the numerical selection pulse train (Q) of single-chip microcomputer (M3) output, automatically call pulse sequence (Q
d), the switch modulation of manual call pulse, the required numerical selection ripple (W) of generation system, calling wave and manual calling wave automatically.
Time exhales power supply (M10) to contain two to be divided into voltage, i.e. direct voltage and alternation or pulse voltage.Both resultant voltages, its polarity and main exhale the polarity of power supply (M7) opposite forever, have by coincidence apparatus (C) from exhaling diode (D
C) and line adapter unit (S) from exhaling diode (D
S) ability.Alternation or pulse voltage can be detected device and form the temporary transient from exhaling the memory level of required polarity.
The principle that time is exhaled device (M11) as shown in Figure 5, the detector (M11a) that contains resistance or transformer, a wave detector (M11b), a list is from exhaling this schmitt trigger (M11c), more than one from exhaling this schmitt trigger (M11d), a NAND gate (M11e), electromagnetic relay or transistor driver (M11f) and switch (A thereof
2).When having only user's closure from exhaling switch (UA), bus loop produce from exhaling electric current at detector (M11a) generation alternating voltage, form the DC level of required polarity by wave detector (M11b), level value can only make single from exhaling this schmitt trigger (M11c) to be inverted to Q=1, how from exhaling this schmitt trigger (M11d) nonreversible, keep Q=1, NAND gate (M11e) output makes relay (M11f) action, Closing Switch (A
2), exhale time power supply (M10) to introduce main electrophone handset (H
O) send ring tone., single as the user's closure more than two from exhaling this schmitt trigger to be inverted to Q=1 from exhaling switch (UA), how from exhaling this schmitt trigger to be inverted to Q=0, relay (M11f) is failure to actuate with door (M11e).By plucking main electrophone handset (H from the mode of exhaling
O), the transient DC level of wave detector (M11b) is measured by single-chip microcomputer (M3), produces complete " O " numerical selection pulse train (Q) by single-chip microcomputer (M3), and makes numerical selection/phonetic function switch (M8) be in voice status subsequently.
The structure of line adapter unit (S) and operation principle thereof are as shown in Figure 6, it comprises a power supply separator (S1), a voltage divider (S2), a monostable flipflop (S3), a shift register (S4), an initializing circuit (S5), a wire jumper not gate (S6), a decoder (S7), one or (S8), a driver (S9), one from exhaling memory (Y
S), a R-S trigger (F
S), a relay (S10) and switch (A thereof
S), one from exhaling diode (D
S) and a protection diode (D
1).
In the main mode of exhaling, main polarity of exhaling power supply (M7) makes protection diode (D
1) conducting, numerical selection ripple (W) is to all line adapter unit (S
1～S
I) power supply.Choosing in the numerical selection ripple (W) meets ripple (W
S) decompositing DC level through power supply separator (S1), logical circuit self power supply as this line adapter unit (S) exchanges or direct current supply so each line adapter unit (S) need not to be provided with separately, makes system simplification, is beneficial to and installs and use.The DC level of power supply separator (S1) output is lower than the level on the bus, and keeps stable.Power supply alternation fluctuation and total line length differ and cause that the variation of pressure drop does not influence the power supply electrical level of the logical circuit in each line adapter unit (S) on the bus.Isolate choosing the numerical selection ripple (W) of voltage divider (S2) on bus and meet pulse train (Q
S), this choosing meets pulse train (Q
S) being introduced into monostable flipflop (S3), corresponding each binary bit produces once squeezes into action, and choosing meets pulse train (Q
S) be introduced to the data terminal of shift register (S4) simultaneously, be moved into shift register (S4).
The figure place and the choosing of shift register (S4) meet pulse train (Q
S) figure place identical, highest order is control bit (h), the back several corresponding to internal code i.Elected pulse train (the Q that connects
S) highest order (h) when moving into the control bit of shift register (S4), self-locking monostable flipflop (S3) then, and open decoder (S7) connects pulse train (Q to the choosing in the shift register (S4)
S) line adapter unit (S that determined with wire jumper not gate (S6)
i) number compares, the output signal of selected decoder (S7) makes R-S trigger (F
S) be reversed to Q=1 by initial Q=O, relay (S10) action, closed its switch (A
S), connect its follow-up bus, the follow-up bus of all the other signal feed-in institute gatings in the numerical selection ripple (W).Not feed-in of numerical selection ripple (W) is hung on not by other coincidence apparatuses (C) on the bus of the line adapter unit in translating (S) back like this, thereby has alleviated the load of power supply significantly.Be different from all the other everybody if initializing circuit (S5) is set to lowest order to the initial state of shift register (S4), then the cancellation choosing meeting pulse train (Q
S) control bit (h), and the figure place of shift register (S4) meets pulse train (Q than choosing
S) many one.
From exhaling mode, wait the polarity of exhaling power supply (M10) and make protection diode (D
1) end, the logical circuit of line adapter unit (S) cuts off the power supply and does not work.Can also can exempt from protection diode (D1) fully by waiting the occasion of exhaling power supply power supply separator (S1).Initiate from exhaling as user, from time exhale that power supply (M10) flows out from exhaling electric current by from exhaling diode (D
S) and from exhaling memory (Y
S) path is provided.From exhaling memory (Y
S) a detector (Y arranged
Sa) and a wave detector (Y
Sb), detector (Ysa) can be a resistance, inductance or audio frequency transformer, from exhale electric current after testing device (Ysa) and the alternating voltage that produces by wave detector (Ysb) detection, the DC level that forms required polarity and can temporarily keep.When the master who exhales power supply (M10) to switch to positive polarity from the time of reversed polarity when the feed of bus (L) exhales power supply (M7), the temporary transient DC level that keeps through or door (S8) act on R-S trigger (F
S) the set end make and be inverted to Q=1, relay (S10) action, closed its switch (A
S).
The structure of coincidence apparatus (C) and operation principle are as shown in Figure 7, it comprises a power supply separator (C1), a voltage divider (C2), a monostable flipflop (C3), a shift register (C4), an initializing circuit (C5), a wire jumper not gate (C6), a high bit decoder (C7) and a low bit decoder (C8), K from exhaling memory (Y
C1～Y
CK), K or door (C91～C9K), K R-S trigger (F
C1～F
CK), K driver (C101～C10K) and switch (K thereof
C1～K
CK), a protection diode (D
2) and K from exhaling diode (D
C1～D
CK), a voltage stabilizing didoe (D
Z).Coincidence apparatus (C) is identical with line adapter unit (S) principle.In the main mode of exhaling, the protection diode current flow, power supply separator (C1) is from meeting ripple (W
C) in isolate DC level, make power logic circuitry.Voltage divider (C2) output coincidence pulse sequence (Q
C), being moved into shift register (C4), shift register (C4) contains a control bit (h), with the relevant multidigit high position of coincidence apparatus (C) number (j), with selected switch (A in the coincidence apparatus (C)
Ck) number (k) relevant multidigit low level.As coincidence pulse sequence (Q
C) when all moving into shift register (C4), its control bit self-locking monostable flipflop (C3) then, and open high bit decoder (C7).In translating as high bit decoder (C7), just open low bit decoder (C8), an output during it is translated makes R-S trigger (F
Ck) be reversed to Q=1 by initial Q=O, closed its switch (A
Ck), be subjected to words (H exhaling to send
Ijk) through bus (L) and main electrophone handset (H
O) be communicated with, send ring tone and realize intercommunication.Electrophone (the H of telephone set (P)
1) can carry out the coupling of sound, magnetic or electricity with the coupler (M12) of main controller (M).
Exhale mode in time, the protected diode (D of power supply that coincidence apparatus (C) is inner
2) institute block, logical circuit quits work.Initiate to exhale the electric current that power supply (M10) flows out to flow through from time as the user from exhaling diode (D from exhaling
C) and from exhaling memory (Y
C), and temporarily keep the DC level of required polarity.When the master that bus (L) feed switches to forward exhaled power supply (M9), the memory of the temporary transient DC level that keeps made R-S trigger (F
Ck) be set to Q=1, closed its switch (A
Ck), realization can not be by other users got involved or eavesdropped in the system from exhaling intercommunication.
Each user side has user's electrophone (H) in the device, and connect again in addition one guide and main exhale power supply and block from exhaling user's diode (UD) of power supply, and a normal branch subscriber switch (UA) in parallel.Exhale state in time, closed user switch (UA), the bus loop closure produces from exhaling electric current, enters from the mode of exhaling.
Described main controller (M) line adapter unit (S) coincidence apparatus (C) is connected as a single entity with conventional plate-making welding procedure, loads onto cabinet, presses Fig. 1 mode in conjunction with forming this intercom system.
Talkback unit of the present invention and traditional scheme comparison, its advantage is:
1, this talkback unit is a bus with a twisted-pair feeder, can articulate user's electrophone (H) of hundreds and thousands of meters, realize the intercommunication of master control selective call user or customer call master control, it is low that its circuit fee is used, and what install conveniently is that each traditional scheme of linking main controller with a pair of special line of each user's electrophone (H) is incomparable.
2, this device adopts the pulse digit numerical selection, and string number can not appear in the quantity that can expand user's electrophone (H) easily, and numerical selection is clear and definite.The customer call master control change over to automatically at once with the off-hook of main electrophone handset the same with master control selective call user can be by third party's eavesdropping on the bus or the intercommunication that gets involved.
3, all line adapter unit (S), coincidence apparatus (C), exhaled electrophone (H) not need separately interchange or dc power supply.Wait the mode of exhaling at ordinary times, the time in the main controller (M) is exhaled power supply (M10) output current hardly.The main power supply (M7) of exhaling is only just connected when calling out with intercommunication, and voltage is low, and power consumption is little, thereby also available powered battery, has enlarged the reliable application scenario of system.
4, Zhuan Zhi sphere of action is big, intercommunication number kilometer, and length of arrangement wire can tens of kilometers.Function is strong, but main controller is exhaled the user, and the user exhales main controller, and with the non-electric coupling of outside line, the realization messenger call is transferred on the spot.
5, building, residence telephone wiring system and this device are compatible, and building, the dwelling house of idle telephone wire arranged, and need not wiring and just can mix this device.
6, apparatus structure is simple, and is easy to implement, and cost is low, installation, maintenance, easy to use, economic benefit height.
Embodiment:
The main controller (M) of device can connect 7 or 8 line adapter units (S), respectively connect 8 coincidence apparatuses (C) thereafter, 7 user's electrophones (H) are arranged on the coincidence apparatus (C), system can connect 392 or 448 user's electrophones altogether, by two level line adapter units (S), can reach several thousand user's electrophones, adopt copper core colloid twisted-pair feeder, the intercommunication distance is not less than 3 kilometers, kilometer surplus length of arrangement wire can reach 20.
Master controller (M) as shown in Figure 8, the monitoring program of monolithic computer (M3) is contained in the EPROM (M4).Exhale mode main, mention main electrophone handset (H
O), off-hook switch (A
O) being in " 1 ", the master exhales the output of power supply (M7) to receive bus (L).By the number that numeric keypad (M1) is keyed in, (M2) converts binary code to through the BCD decoder, sends into single-chip microcomputer (M3) and converts binary code ijk to, and weave into numerical selection pulse train (Q).Numerical selection pulse train (Q) and call pulse (Q
d) be added on main base stage of exhaling the switch modulation pipe (BG2) of power supply (M7) through transistor (BG1), form on-off modulated numerical selection ripple (W) and calling wave, make and exhaled electrophone (H
Ijk) send ring tone.End of calling, single-chip microcomputer (M3) make transistor (BG3) conducting of numerical selection/phonetic function switch (M8), relay (X
1) adhesive, switch (A
1) switch to voice status " 2 " from numerical selection state " 1 ", insert choke (M9), main electrophone handset (H
O) receive bus (L) and exhaled electrophone (H through voltage-stabiliser tube (D16)
Ijk) be communicated with.While user's oscillator (V
u) make user's electrophone (H
Ijk) and main electrophone handset (H
O) send to be interrupted and call out.User's off-hook, subscriber switch (A
u) short circuit user oscillator (V
u), can carry out intercommunication.Also can be the electrophone (H of telephone set (P)
1) place on the acoustic coupler (M12) clamping switch (A
3) swing to " 2 " from " 1 ", voltage-stabiliser tube (D16) is received coupler (M12) and is broken away from main electrophone handset (H
O), the switching on the spot of incoming call or exhalation is done in realization to local telephone network or long-distance call.User's oscillator (V
u) can make the end signal that the outside line acoustical coupling is talked.
Exhale state in time, off-hook switch (A
O) swing to " 2 ", wait and exhale power supply (M10) to receive bus (L), form 1 kilo hertz symmetrical negative polarity square wave by oscillator, and output contains negative DC level.
It is detector (M11a) from exhaling electric current that time is exhaled the interior R25 of device (M11), R26, and D25, C ' 7, and C ' the 8th, wave detector (M11b), the voltage of importing this schmitt trigger (M11c) and (M11d) is self-capacitance C respectively
7' and C
8' take out, and make incoming level by R27 and R28 and regulate.NAND gate (M11e) output extension bar spring relay (M11f) is controlled its switch (A
2), 1 kilo hertz alternating voltage is received main electrophone handset (H
O) send ring tone.Plucked main electrophone handset (H
O) after, C
11' on voltage, input single-chip microcomputer (M3), for from exhaling the test of memory, as from exhaling memory, single-chip microcomputer (M3) produces complete " 0 " numerical selection pulse train (Q).
Components and parts among Fig. 7: the M1-numeric keypad is D1～D10(2CK10), R0～R10; The M2-decoder, 74LS147; The M3-single-chip microcomputer, 8035; M4-EPROM, 2716; The M5-display driver circuit, 74LS49; M6-7 section LED, display; M7-master exhales power supply, BG2(3DG6), BG3(3DG6), R19～R21, rectifier P
1, regulator block P
4Deng; M8-numerical selection/phonetic function switch, BG3(3DG6), relay X
1, R23～R24, also available transistor replaces; The M9-choke, inductance coil; M10-waits and exhales power supply; BG4(3DG6), CH1, CH2(4011), R
O, C '
10, R30 and rectifier; M11-waits and exhales device, and the M11a detector is R27, R28; The M11b wave detector is C '
6～C '
8, R26, D25; M11c, single from exhaling this schmitt trigger, 40106; How M11d is from exhaling this schmitt trigger 40106; M11e, NAND gate 4011; M11f, relay, JAG-4, also available transistor replaces; The M12-coupler, the electrophone of telephone set.
Line adapter unit (S) as shown in Figure 9, separator (S1) be the base stage voltage stabilizing emitter follower (BG30) (3DG6), C '
32, R35 forms initializing circuit (S5), and monostable flipflop (S3) is by NAND gate (S3a), and (S3b) (4011) and C31, R34 form, and R32, R33 are voltage divider (S2), choosing meets pulse train (Q
S) be driven into shift register (S4) (4015), when control impuls moves into highest order, its output self-locking monostable trigger (S3) is also opened decoder (S7) (CO61), and whether the access of three NAND gate (S6) (4011) depends on the numbering (i) of line adapter unit (S).To the line adapter unit (S) in translating, the output of decoder (S7) through or door (S8) (4071) make R-S trigger (F
S) (4043) set becomes Q=1, (BG31 3DG6) makes pole spring relay (X to driver (S9)
S) (JAG-4) conducting, closed its contact (A
S).Driver (S9), relay (X
S), contact (A
S) an available analog switch (4066) substitutes.
Exhale state in time, initiate to flow through from exhaling memory (Y from exhaling electric current from exhaling as the user
S) and from exhaling diode (D
S).From exhaling memory (Y
S) by transformer (Z
S) and secondary wave detector composition, diode (D31) and capacitor (C ' 33) they are peak detectors.The negative terminal of C ' 33 meets Dc bias resistance (R38) and (R39), and anode warp or door (S8) are sent into the set end of R-S trigger.When bus (L) switches to mainly when exhaling power supply (M7), make R-S trigger (F) be inverted to Q=1 to having from the level of exhaling memory.
Coincidence apparatus (C) as shown in figure 10, separator (C1), voltage divider (C2), monostable flipflop (C3), initializing circuit (C5) is from exhaling diode (D
C), protection diode (D
2) with (S1) of Fig. 9, (S2), (S3), (C5), (D
S), (D
1).Eight bit shift register (C4) (4015) are utilized seven, highest order is a control bit, secondly three binary codes are deciphered by decoder (C7), the decoder (C8) (4028) of back three binary codes is opened in output after translating, it has 7 outputs respectively, each warp or door (C91～C97) (4071) input R-S trigger (F
C1～F
C7) the set end of (4043), and be passed to separately driver (C101～C107).A closed switch (A who is chosen
Ck), electrophone (H
Ijk) receive main controller (M) through bus.Adopt transistor (BG59～BG65) (3DG1) to make switch (A
C1～A
C7), and (3DG6) drive by transistor (BG51～BG57).Transistor (BG59～BG65), (BG51～BG57) and switch (A
C1～A
C7) available two 4066 substitute.Memory (Y
C1～Y
C7) by transformer (Z
C1～Z
C7) and secondary wave detector composition, diode (D61～D67) and capacitor (C
61'～C
67') form wave detector respectively, the negative terminal of all electric capacity meets common bias resistance (R78) and (R79), each warp of anode or door (C91～C97) (4071) input R-S trigger (F
C1～F
C7) the set end of (4043).
Claims (10)
1, a kind of by main controller, line adapter unit, coincidence apparatus, electrophone, casing and the bus-type master-slave mutual-call talkback unit that public twisted-pair feeder is formed, it is characterized in that:
--comprise a main electrophone handset [H
o], a main controller [M], I line adapter unit [S], I * J coincidence apparatus [C], I * J * K user's electrophone [H] adopts the common bus [L] of a twisted-pair feeder to connect;
--exhale mode main, [M] exhales electrophone [H by the quilt of being keyed in by main controller
Ijk] number, user's electrophone [H that gating is exhaled
Ijk], main electrophone handset [H
o] and Called Subscriber electrophone [H
Ijk] between carry out duplexing secret intercommunication;
--from exhaling mode, press next user's electrophone [H
Ijk] subscriber switch [UA
Ijk], memory is from exhaling the path, by the automatic gating of main chamber device [M], with main electrophone handset [H
o] enter duplexing secret intercommunication immediately;
--the electrophone [H of device and telephone set [P]
1], utter a word, magnetic or the electricity coupling, can realize the incoming call of city or toll telephone or the switching on the spot of exhalation;
Quantity according to wiring topology and user's electrophone [H] can not be provided with or be provided with a plurality of line adapter units [S] or multi-level line adapter unit [S].
2, talkback unit according to claim 1, it is characterized in that described main controller (M) comprises a numeric keypad (M1), a keyboard-coding circuit (M2), single-chip microcomputer or microprocessor (M3), a read-only memory (M4), a display driver circuit (M5), a charactron (M6), a master exhales power supply (M7), a numerical selection/phonetic function switch (M8), an audio frequency choke (M9), a time is exhaled power supply (M10), a time is exhaled device (M11), an off-hook switch (A
O), a main electrophone handset (H
O) and a coupler (M12).
3, talkback unit according to claim 2 is characterized in that single-chip microcomputer (M3) weaves into numerical selection pulse train (Q) and call pulse sequence (Q to the number of keying in
d), form a numerical selection ripple (W) and the calling wave that the twisted wire system is required.
4, talkback unit according to claim 2 is characterized in that described time exhales power supply (M10) to contain direct voltage and alternation or pulse voltage, and the polarity of resultant voltage is opposite with the main power supply (M7) of exhaling.
5, talkback unit according to claim 2, it is characterized in that described time exhales device (M11) to contain a detector of being made up of resistance or transformer (M11a), a wave detector (M11b), a list is from exhaling this schmitt trigger (M11c), more than one from exhaling this schmitt trigger (M11d), one with door (M11e), pole spring or transistor relay (M11f) and switch (A thereof
2), produce from exhaling off-hook numerical selection pulse train automatically.
6, talkback unit according to claim 1, it is characterized in that described line adapter unit (S) contains a power supply separator (S1), a voltage divider (S2), a monostable flipflop (S3), a shift register (S4), an initializing circuit (S5), a wire jumper not gate (S6), a decoder (S7), one or (S8), a driver (S9), one from exhaling memory (Y
S), a R-S trigger (F
S), a relay (S10) and switch (A thereof
S), one from exhaling diode (D
S) and a protection diode (D
1), relay (S10) and switch (A thereof
S) also can adopt analog switch.
7, talkback unit according to claim 6 is characterized in that described power supply separator (S1) isolates DC level in the numerical selection ripple, as self stable power-supplying of line adapter unit (S) logical circuit.
8, talkback unit according to claim 6 is characterized in that described from exhaling memory (Y
S) contain a detector (Y
Sa), a wave detector (Y
Sb); Path and auto-closing its switch (A of memory from exhaling electric current institute warp
S); Detector (Y
Sa) can adopt resistance or inductance or audio frequency transformer.
9, talkback unit according to claim 1, it is characterized in that described coincidence apparatus (C) comprises a power supply separator (C1), a voltage divider (C2), a monostable flipflop (C3), a shift register (C4), an initializing circuit (C5), a wire jumper not gate (C6), a high bit decoder (C7), a low bit decoder (C8), K from exhaling memory (Y
C1～Y
CK), K or door (C91～C9K), K R-S trigger (F
C1～F
CK), K driver (C101～C10K), and switch (A
C1～A
CK), a protection diode (D
2) and K from exhaling diode (D
C1～D
CK), a variable decompression tube (D
Z), driver (C101～C10K) and switch (A thereof
C1～A
CK) also can adopt analog switch.
10, talkback unit according to claim 1 is characterized in that described each user's electrophone (H) user's diode (D that locates to have connected
u) and user's oscillator (V
u), exhale power supply (M10) to be high resistant to time; And subscriber switch (U in parallel
A), exhale power supply (M10) to be low-resistance to time when closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203508 CN2045558U (en) | 1988-02-13 | 1988-02-13 | Trunk type calling and speaking apparatus between principal and subordinate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203508 CN2045558U (en) | 1988-02-13 | 1988-02-13 | Trunk type calling and speaking apparatus between principal and subordinate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045558U true CN2045558U (en) | 1989-10-04 |
Family
ID=4838315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88203508 Pending CN2045558U (en) | 1988-02-13 | 1988-02-13 | Trunk type calling and speaking apparatus between principal and subordinate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2045558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109076130A (en) * | 2016-03-28 | 2018-12-21 | 爱峰株式会社 | Intercom system |
-
1988
- 1988-02-13 CN CN 88203508 patent/CN2045558U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109076130A (en) * | 2016-03-28 | 2018-12-21 | 爱峰株式会社 | Intercom system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2045558U (en) | Trunk type calling and speaking apparatus between principal and subordinate | |
| CN1008871B (en) | The bus-type master-slave mutual-call intercom system | |
| CN101800574B (en) | Signal-sending switching device and power line carrier communication system using same | |
| CN201234323Y (en) | Visual inter-phone security protection system | |
| CN201222778Y (en) | Public fixed telephone network building visible intercommunication telephone system | |
| CN1171669A (en) | Digital multiplexing telophone channels over power transmission line and integrated information transmission system | |
| CN2620447Y (en) | Mainframe using telephone program control exchanger as gate inhibition interphone system for entrance of housing estate | |
| CN2048268U (en) | Bus-type master-slave intercom | |
| CN203912096U (en) | Low-cost building intercom device | |
| CN2181546Y (en) | Intelligent electrically operated locking device | |
| CN88203507U (en) | Bus type main unit controlled selective calling intercom system | |
| CN206302469U (en) | A kind of dispatching telephone tries the device of words automatically | |
| CN2407518Y (en) | Comprehensive testing instrument for data transmission | |
| CN87104107A (en) | Non-powered remote sensor | |
| CN201035822Y (en) | Program controlled switch experiment system | |
| CN207801963U (en) | A kind of switch remote rebooting device based on phone control | |
| CN101350853B (en) | Hydrology information numeral transmission terminal and simulated reporting method | |
| CN2562512Y (en) | Power supply apparatus monitor based on common telephone net | |
| CN1458799A (en) | Intercommunication system for outdoor recording meter number | |
| CN2404281Y (en) | Non-emergency telephone shield | |
| CN2487168Y (en) | Mobile phone with voice control dial function | |
| CN2205617Y (en) | Voice dialing device | |
| CN2332794Y (en) | Actuator and controller of electric control lock | |
| CN2134007Y (en) | Dispatching exchanger for mine | |
| CN2252458Y (en) | Two-wire building space intercom |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |