CN210578541U - Call system and elevator call system - Google Patents
Call system and elevator call system Download PDFInfo
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- CN210578541U CN210578541U CN201921707072.4U CN201921707072U CN210578541U CN 210578541 U CN210578541 U CN 210578541U CN 201921707072 U CN201921707072 U CN 201921707072U CN 210578541 U CN210578541 U CN 210578541U
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Abstract
The embodiment of the utility model discloses talk system and elevator talk system. The power supply device is used for providing a power supply signal for the first rectifying module, the first audio signal generating module is used for providing an audio signal for the first rectifying module, the first rectifying module outputs a mixed signal containing the power supply signal and the audio signal, the power supply signal and the audio signal are subjected to collinear transmission between the first rectifying module and the first isolating module, finally, the power supply signal in the mixed signal is isolated through the first isolating module, only the audio signal is allowed to pass through the first isolating module, the power supply signal and the audio signal can be normally transmitted and are not interfered, meanwhile, because the power supply signal and the audio signal are subjected to collinear transmission, the number of transmission lines is reduced, the cost is reduced, and the user requirements are met.
Description
Technical Field
The embodiment of the utility model provides a relate to communication technology field, especially relate to a speech system and elevator speech system.
Background
When the traditional communication device is used for signal transmission, a power supply signal and an audio signal are generally collinear, namely, two-wire transmission is adopted, and the mode easily causes interference to the audio signal, so that the distortion is serious, and the communication quality is influenced.
In order to reduce the interference to the audio signal, the prior art mainly adopts a four-wire cable, that is, the power signal and the audio signal are respectively transmitted on two cables to reduce the interference of the power signal to the audio signal, but this way needs more transmission cables, which increases the cost.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a speech system and elevator speech system, in reduce cost, guarantee that power signal and audio signal can normal transmission, do not receive the interference.
In a first aspect, an embodiment of the present invention provides a communication system, which includes a first communication device, a second communication device, and a power supply device, the first communicator comprises a first rectifying module, a first isolating module and a first audio signal generating module, the second communication device comprises a second rectifying module, a second isolating module and a second audio signal generating module, the first audio signal generating module is connected with the first isolating module through the first rectifying module, the second audio signal generating module is connected with the second isolating module through the second rectifying module, the first isolation module is connected with an audio signal receiving and transmitting port in the second communication device, the second isolation module is connected with an audio signal receiving and transmitting port in the first communication device, and the power supply device is connected with the first rectifying module and the second rectifying module respectively.
Optionally, the first call device further includes a first transient suppression diode;
the first transient diode is respectively connected with the audio signal input end and the power signal input end of the first rectifying module.
Optionally, the second communication device further includes a second transient suppression diode;
and the second transient diode is respectively connected with the audio signal input end and the power signal input end of the second rectifying module.
Optionally, the call system further includes: and the first power supply device is connected with the power supply device and supplies power to the first communication device and the second communication device when the power supply device is in a standby state.
Optionally, the power supply device is a third communication device;
correspondingly, the call system further comprises: a fourth telephone device and a second power supply device;
the second power supply device is connected with the fourth communication device, and the fourth communication device is connected with the third communication device.
Optionally, the first rectifying module and the second rectifying module are all full bridges.
In a second aspect, an embodiment of the present invention further provides an elevator communication system, including the communication system according to the first aspect;
the first communication device is arranged on an elevator car, the second communication devices are respectively arranged on the top of the elevator car and a pit of the elevator, and the power supply device is arranged in an elevator machine room;
and when the power supply device is in a standby state, the power supply device supplies power to the first communication device and the second communication device.
The embodiment of the utility model provides a calling system and elevator calling system, use first calling device as the example, provide signal through the first rectifier module of power supply for among the first calling device, first audio signal generation module provides audio signal for first rectifier module, and the mixed signal who contains signal and audio signal through first rectifier module output, make signal and audio signal collineation transmission between first rectifier module and first isolation module, power signal through first isolation module in with the mixed signal keeps apart at last, only allow audio signal to pass through first isolation module, make signal and audio signal can normal transmission, do not disturbed, simultaneously because signal and audio signal collineation transmission, the quantity of transmission line has been reduced, the cost is reduced, user demand has been satisfied.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a structural diagram of a call system according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a part of a communication system according to an embodiment of the present invention in detail;
fig. 3 is a schematic partial detailed view of another communication system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a call system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of another communication system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a structural diagram of a call system according to an embodiment of the present invention, the present embodiment can be applied to a situation that two call devices are not powered by an independent power line and a power signal and an audio signal are transmitted in a collinear manner.
Specifically, referring to fig. 1, the call system includes: the first communication device 1 comprises a first rectifying module 12, a first isolation module 11 and a first audio signal generation module 13, the second communication device 2 comprises a second rectifying module 22, a second isolation module 21 and a second audio signal generation module 23, the first audio signal generation module 13 is connected with the first isolation module 11 through the first rectifying module 12, the second audio signal generation module 23 is connected with the second isolation module 21 through the second rectifying module 22, the first isolation module 11 is connected with an audio signal transceiving port 20 in the second communication device 2, the second isolation module 21 is connected with an audio signal transceiving port 10 in the first communication device 1, and the power supply device 3 is connected with the first rectifying module 11 and the second rectifying module 21 respectively.
The first communication device 1 and the second communication device 2 are fixed telephones capable of communicating, the installation positions of the first communication device 1 and the second communication device 2 can be determined according to needs, for example, in the elevator industry, the first communication device 1 can be installed on an elevator car, an elevator car roof or an elevator pit, and the like, when the first communication device 1 is installed on the elevator car, the second communication device 2 can be installed on the elevator car roof or the elevator pit, and when the first communication device is installed on the elevator car roof or the elevator pit, the second communication device 2 can be installed on the elevator car. Of course, the method can also be applied to other industries, and the embodiment is not limited. The power supply device 3 may be a communication device having a communication function, for example, when the first communication device 1 and the second communication device 2 are applied to the elevator industry, the power supply device 3 may be a machine room telephone installed in an elevator machine room, and may supply power to the first communication device 1 and the second communication device 2, or may communicate with the first communication device 1 or the second communication device 2. The power supply means 3 may be powered by a separate power supply means.
In the conventional communication system, the power supply device 3, the first communication device 1 and the second communication device 2 are transmitted by a four-wire system, that is, the power supply signal provided by the power supply device 3 and the audio signal generated by communication are transmitted on different transmission lines, so that the power supply signal and the audio signal are not interfered, but the transmission mode needs four transmission lines, which increases the cost to a certain extent. In order to reduce the cost, the two-wire transmission is selected, that is, the power signal provided by the power supply device 3 and the audio signal generated by the call are transmitted in a collinear manner, and in order to ensure that the power signal and the audio signal are not interfered, the embodiment introduces a separation and isolation technology into the first call device 1 and the second call device 2 to isolate the power signal and the audio signal.
Optionally, the first communicator 1 includes a first rectifying module 12, a first isolating module 11 and a first audio signal generating module 13, and the second communicator 2 includes a second rectifying module 22, a second isolating module 21 and a second audio signal generating module 23. The first rectifying module 12, the first isolating module 11 and the first audio signal generating module 13 in the first communicator 1 have the same structure and function as the second rectifying module 22, the second isolating module 21 and the second audio signal generating module 23 in the second communicator 2.
Take the first rectifying module 12, the first isolating module 11 and the first audio signal generating module 13 as an example. The power signal input end of the first rectifying module 12 receives the power signal provided by the power supply device 3, and the audio signal input end of the first rectifying module 12 receives the audio signal generated by the first audio signal generating module 13, so as to change the dc voltage with variable polarity into the dc voltage with fixed polarity. In practical application, the power signal provided by the power supply device 3 is a direct current, the voltage of the power signal is higher, the current of the power signal is constant, the audio signal is an alternating current, the voltage of the audio signal is lower, the current of the audio signal is smaller, when the audio signal and the power signal are superposed and pass through the first rectifying module 12, the total current is a direct current fluctuating according to the frequency of the audio signal, the current direction is kept unchanged, so that the audio signal can pass through the first rectifying module 12 in the direction of the direct current, and the direct current voltage with variable polarity is changed into a direct current voltage with fixed polarity.
The first isolation module 11 is configured to isolate a dc signal, i.e., a power signal, in the mixed signal output by the first rectification module 12, so that an audio signal can be transmitted to the second communication device 2 through the first isolation module 11 and then through the audio signal transceiving port 10 in the first communication device 1, thereby implementing normal communication. The isolated power signal can be converted to the voltage required by the first communicator 1 through the voltage conversion circuit. The embodiment does not limit the specific structures of the first isolation module 11, the first rectification module 12, the first audio signal generation module 13, and the voltage conversion circuit.
The embodiment of the utility model provides a call system, use first calling equipment as the example, provide signal through the power supply unit for first rectifier module, first audio signal generation module provides audio signal for first rectifier module, and contain signal and audio signal's mixed signal through first rectifier module output, make signal and audio signal collineation transmission between first rectifier module and first isolation module, power signal in the mixed signal is kept apart through first isolation module at last, only allow audio signal to pass through first isolation module, make signal and audio signal can normal transmission, do not receive the interference, simultaneously because signal and audio signal collineation transmission, the quantity of transmission line has been reduced, the cost is reduced, user demand has been satisfied.
On the basis of the above embodiments, exemplarily, referring to fig. 2, fig. 2 is a schematic diagram of a part of details of a call system according to an embodiment of the present invention. Fig. 2 is a schematic diagram showing a part of the details of the first communication device 1 and the power supply device 3 by way of example only, and the second power supply device 2 is similar to the first power supply device 1. The first rectifying module 12 takes a full bridge as an example, that is, the first rectifying module is composed of four diodes, namely, a first diode 121, a second diode 122, a third diode 123 and a fourth diode 124, an anode of the first diode 121 is connected to an anode of the fourth diode 124, a cathode of the first diode 121 is connected to an anode of the second diode 122, a cathode of the second diode 122 is connected to a cathode of the third diode 123, an anode of the third diode 123 is connected to a cathode of the fourth diode 124, and an anode of the fourth diode 124 and an anode of the first diode 121 are grounded. The audio signal receiving end a of the first rectifying module 12 is connected to the first audio signal generating module 13 and configured to receive the audio signal generated by the first audio signal generating module 13, and the power signal receiving end B of the first rectifying module 12 is connected to the diode D1 and configured to receive the power signal provided by the power supply device 3. The power supply device 3 obtains a voltage of 12V under the action of the independent power supply, and provides a power supply signal for the first rectifying module 12 sequentially through the first resistor R1, the second resistor R2 and the diode D1, one end of the first resistor R1 is grounded through the filter capacitor C1, and the generated power supply signal is filtered. The embodiment is not limited to the specific process of obtaining the 12V voltage by the power supply device 3 under the action of the independent power supply. The first resistor R1, the second resistor R2, and the filter capacitor C1 may be set according to actual needs, for example, in this embodiment, the first resistor R1 is 0.51K, the second resistor R2 is 1.2K, and the filter capacitor C1 is 0.1 μ F.
The first isolation module 11 takes the isolation transformer T1 as an example, and the mixed signal output by the mixed signal output terminal C of the first rectification module 12 is used as an input of the isolation transformer T1 to isolate the power signal in the mixed signal, so that the audio signal is transmitted to the second communication device 2 through the isolation transformer T1, and the power signal and the audio signal do not interfere with each other. The audio signal passing through the isolation transformer T1 further eliminates the interference in the audio signal under the action of the filter capacitor C2, thereby ensuring the reliability of the audio signal and improving the communication quality.
On the basis of the above embodiments, referring to fig. 3, fig. 3 is a partial detailed schematic view of another call system according to an embodiment of the present invention. As shown in fig. 3, the first communicator 1 further comprises a first transient suppression diode 14;
the first transient diode 14 is connected to the audio signal input terminal and the power signal input terminal of the first rectifying module 12, respectively.
The first Transient Voltage Suppressor (TVS) 14 is a protection device formed of a diode for protecting the first rectification module 12 from being damaged by the Transient Voltage.
On the basis of the above embodiment, the second communication device 2 further includes a second transient suppression diode;
the second transient diode is connected to the audio signal input terminal and the power signal input terminal of the second rectifier module 22, respectively.
The connection and function of the second transient suppression diode in the second communication device 2 are the same as the connection and function of the first transient suppression diode 14 in the first communication device 1, and reference may be made to the above embodiments specifically, and details are not repeated here.
On the basis of the above embodiment, referring to fig. 2 to 3, the call system further includes: and a first power supply device 4, wherein the first power supply device 4 is connected with the power supply device 3, and supplies power to the first communication device 1 and the second communication device 2 when the power supply device 3 is in a standby state.
The power supply device 3 of this embodiment is powered by the external first power supply device 4, that is, the power supply device 3 has an independent power supply, and the first communication device and the second communication device described in this embodiment do not have an independent power supply and need to be powered by the power supply device 3. In the conventional power supply method, when the power supply device 3 is a call device, power can be supplied to the first call device 1 and the second call device 2 only when the power supply device 3 is turned on, so that a call between the first call device 1 and the second call device 2 is realized. Taking the elevator industry as an example, when the first communication device 1 and the second communication device 2 have a communication demand, it is necessary to ensure that a person is at the installation position of the power supply device 3, the first communication device 1 or the second communication device 2 presses an alarm bell first, after the user at the power supply device 3 hears the alarm bell, the power supply device 3 is taken off hook, and after the power supply device 3 is taken off hook, the first communication device 1 and the second communication device 2 are provided, so that the communication between the first communication device 1 and the second communication device 2 is realized. If no one is present at the installation position of the power supply device 3, the first communication device 1 and the second communication device 2 cannot communicate with each other even when there is a communication demand. And the process of realizing normal call through the alarm bell and then the off-hook is also complicated.
In this embodiment, the power supply device 3 is externally connected with the first power supply device 4, the power supply device 3 is connected with the first communication device 1 and the second communication device 2, when the power supply device 3 is in standby, the power supply device can still supply power for the first communication device 1 and the second communication device 2, so that the mode that the power supply and the communication can be carried out only when the traditional power supply device 3 is off-hook is changed, and when the first communication device 1 and the second communication device 2 need to communicate, only the first communication device 1 or the second communication device 2 needs to be waken up, which is simple and convenient, and the requirements of users can be met in time.
Exemplarily, referring to fig. 4, fig. 4 is a schematic diagram of a call system according to an embodiment of the present invention. As shown in fig. 4, taking two first communication devices 1, one second communication device 2 and one power supply device 3 as an example, the first power supply device 4 independently supplies power to the power supply device 3, wherein a black line is a ground line, a red line is a 12V power line, that is, the first power supply device 4 supplies 12V voltage to the power supply device 3, a blue line is used for supplying power to the first communication device 1 and the second communication device 2 and transmitting audio signals, and a yellow line is a ground line. When the power supply device 3 is in standby, power can still be supplied to the first communication device 1 and the second communication device 2, and even if no person is at the installation position of the power supply device 3, the first communication device 1 and the second communication device 2 can still communicate.
On the basis of the above embodiment, the power supply device 3 is a third communication device;
exemplarily, referring to fig. 5, fig. 5 is a schematic diagram of another call system provided in an embodiment of the present invention, where the call system further includes: a fourth telephone device 5 and a second power supply device 6;
the second power supply device 6 is connected to the fourth communication device 5, and the fourth communication device 5 is connected to the third communication device 3.
The second power supply device 6 provides independent power supply for the fourth communication device 5, and the fourth communication device 5 is connected with the third communication device 3 and can communicate with each other. As shown in fig. 5, the second power supply device 6 supplies a voltage of 12V to the fourth microphone device 5, and is connected by a black-marked line, a red-marked line is a ground line, a white-marked line is a signal line, and a green-marked line is a ground line. In the embodiment, the fourth communication device 5 and the third communication device 3 communicate with each other through a CAN (Controller Area Network) bus, where the CAN bus is a twisted pair cable and includes a CAN high line and a CAN low line, a brown line in fig. 5 is the CAN high line, and a gray line is the CAN low line, and the specific communication process is not limited in the embodiment. The third communication device 3 can also be connected to an external telephone line to communicate with other external telephones.
On the basis of the above embodiment, the first rectification module 12 and the second rectification module 22 are both full bridges. The specific structure and connection relationship of the full bridge have been described above, and specific reference may be made to the above embodiments, which are not described herein again.
Taking the elevator industry as an example, on the basis of the above embodiment, the embodiment further provides an elevator communication system, which includes the communication system described in the above embodiment, wherein the first communication device 1 is arranged in the elevator car, the second communication device 2 is respectively arranged on the elevator car top and the elevator pit, and the power supply device 3 is arranged in the elevator machine room; the fourth communicator 5 is arranged in the monitoring room, the first communicator 1, the second communicator 2, the power supply device 3 and the fourth communicator 5 can communicate, the power supply device 3 and the fourth communicator 5 are respectively supplied with power by the independent first power supply device 4 and the independent second power supply device 6, the first communicator 1 and the second communicator 2 do not have independent power supplies and are supplied with power by the power supply device 3, when the power supply device 3 is in standby, the first communicator 1 and the second communicator 2 can still be supplied with power, the first communicator 1 and the second communicator 2 can communicate at any time, operations such as alarm bell pressing, off-hook pressing and the like are not needed, and normal communication is achieved. In addition, the rectification module and the isolation module arranged in the first communication device 1 and the second communication device 2 can effectively isolate the power signal and the audio signal, so that the power signal and the audio signal can be normally transmitted without interference, and the communication quality is improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (7)
1. A communication system is characterized in that the communication system comprises a first communication device, a second communication device and a power supply device, the first communicator comprises a first rectifying module, a first isolating module and a first audio signal generating module, the second communication device comprises a second rectifying module, a second isolating module and a second audio signal generating module, the first audio signal generating module is connected with the first isolating module through the first rectifying module, the second audio signal generating module is connected with the second isolating module through the second rectifying module, the first isolation module is connected with an audio signal receiving and transmitting port in the second communication device, the second isolation module is connected with an audio signal receiving and transmitting port in the first communication device, and the power supply device is connected with the first rectifying module and the second rectifying module respectively.
2. The call system according to claim 1, wherein said first call device further comprises a first transient suppression diode;
the first transient diode is respectively connected with the audio signal input end and the power signal input end of the first rectifying module.
3. The telephony system of claim 1, wherein the second telephony device further comprises a second transient suppression diode;
and the second transient diode is respectively connected with the audio signal input end and the power signal input end of the second rectifying module.
4. The telephony system of claim 1, further comprising: and the first power supply device is connected with the power supply device and supplies power to the first communication device and the second communication device when the power supply device is in a standby state.
5. The communication system according to claim 1, wherein the power supply device is a third communication device;
correspondingly, the method also comprises the following steps: a fourth telephone device and a second power supply device;
the second power supply device is connected with the fourth communication device, and the fourth communication device is connected with the third communication device.
6. The telephony system of claim 1, wherein the first rectification module and the second rectification module are full bridges.
7. An elevator call system, characterized in that it comprises a call system according to any one of claims 1-6;
the first communication device is arranged on an elevator car, the second communication devices are respectively arranged on the top of the elevator car and a pit of the elevator, and the power supply device is arranged in an elevator machine room;
and when the power supply device is in a standby state, the power supply device supplies power to the first communication device and the second communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921707072.4U CN210578541U (en) | 2019-10-12 | 2019-10-12 | Call system and elevator call system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921707072.4U CN210578541U (en) | 2019-10-12 | 2019-10-12 | Call system and elevator call system |
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| CN210578541U true CN210578541U (en) | 2020-05-19 |
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| CN201921707072.4U Active CN210578541U (en) | 2019-10-12 | 2019-10-12 | Call system and elevator call system |
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