CN111182164A - Emergency street call system - Google Patents
Emergency street call system Download PDFInfo
- Publication number
- CN111182164A CN111182164A CN201911323504.6A CN201911323504A CN111182164A CN 111182164 A CN111182164 A CN 111182164A CN 201911323504 A CN201911323504 A CN 201911323504A CN 111182164 A CN111182164 A CN 111182164A
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- extension
- host
- calling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
- H04M11/022—Paging systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/253—Telephone sets using digital voice transmission
Abstract
The invention discloses an emergency street calling system, which comprises a plurality of calling extensions and a host, wherein the calling extensions are installed in the individual user homes of all the cells in a street, and the host is installed in a master monitoring office center of all the cells in the street; the calling extension comprises a shell and an extension processing circuit located inside the shell, the extension processing circuit comprises an extension processor, a timing circuit, a shift register, a voice call module and a wireless transceiving module, address information of a host is stored in the extension processor, the host comprises the shell and a host processing circuit located inside the shell, and the host processing circuit comprises a host processor, a voice call module and a wireless transceiving module. The invention can realize the automatic cyclic calling of the calling extension to the host, so that the calling can be automatically carried out to the host which is adjacently arranged while one host does not respond, and the calling efficiency of the calling extension is improved.
Description
Technical Field
The invention relates to the technical field of street calling devices, in particular to an emergency street calling system.
Background
With the serious aging of society, the number of elderly people living alone is increasing, and the health of the elderly people becomes a big concern of the community. Therefore, in order to pay attention to the living conditions of the solitary old people all, an emergency street calling system is installed in a plurality of communities, namely, an emergency calling extension set is installed in the solitary old people in each community of a street to be connected with a calling host set by a street management center, so that the solitary old people can ask for help from the calling host of the street management center through the emergency calling extension set in time when finding that the bodies of the solitary old people are uncomfortable. However, in practical use, it is found that the street management center is too far away from each cell, and the center needs to separately communicate information to the cell workers to help the help-seeking independent users. Moreover, because one host corresponds to the extension sets of all the cells in the street, the situation that a plurality of extension sets seek help from the host at the same time is easy to occur, so that the disadvantage that the extension sets cannot be responded by the host all the time is caused, and the method is very dangerous for the user who lives alone.
Disclosure of Invention
The invention aims to: in order to overcome the defects, the emergency street calling system can realize automatic circular calling of the extension to the host and ensure stable power supply of the extension.
In order to achieve the purpose, the technical scheme of the invention is as follows: the emergency street calling system comprises a plurality of calling extension sets and a host, wherein the calling extension sets are installed in the individual user homes of all the cells of a street, and the host is installed in a master monitoring office center of all the cells of the street; the calling extension comprises a shell and an extension processing circuit positioned in the shell, the extension processing circuit comprises an extension processor, a timing circuit, a shift register, a voice call module and a wireless transceiving module, the extension processor stores address information of a host, the host comprises the shell and a host processing circuit positioned in the shell, and the host processing circuit comprises a host processor, a voice call module and a wireless transceiving module;
a shift register: the shift register is connected with the extension processor, digital signals corresponding to the host address information are stored in the shift register, and the shift register transmits the signals to the extension processor, so that the extension processor can sequentially poll and scan the host address information corresponding to the extension processor and send messages to the corresponding host through the wireless transceiving module;
a timing circuit: the timing circuit is connected with the extension processor, and the time for waiting for calling the data transmission of the extension wireless transceiver module can be set through the timing circuit, so that the extension processor can transmit information to the wireless transceiver module to stop starting when the host computer does not receive the information after the timing of the timing circuit is finished, and meanwhile, the extension processor continuously inquires the address information of the next host computer.
Furthermore, a display screen is arranged on the host shell and connected with the output end of the host processor, and the display screen and the host processing circuit are electrically connected with an external mains supply to supply power.
Furthermore, the extension processing circuit is powered by double power supplies, the double power supplies comprise a commercial power supply and a battery, a change-over switch is arranged between the commercial power supply and the battery, a movable end 1 of the change-over switch is connected with an output end of the commercial power supply, a movable end 2 of the change-over switch is connected with an output end of the battery, and a fixed end 3 of the change-over switch is connected with the extension processing circuit calling the extension for supplying power to the extension processing circuit.
Further, the timing circuit comprises resistors R1-R1, capacitors C1-C1, diodes D1-D1, a controller U1 and a relay K, one end of the resistor R1 is connected to one ends of contacts 1-1 of the capacitors C1 and the relay K, the other end of the resistor R1 is connected to the other end of the capacitors C1 and one ends of the diodes D1-D1, the other end of the diode D1 is connected to one ends of the diodes D1, the capacitors C1 and the resistor R1, the other end of the resistor R1 is connected to one end of the capacitor C1 and the pin 8 and the pin 4 of the controller U1, the other end of the capacitor C1 is connected to the other ends of the capacitors C1 and the diodes D1, the other end of the resistor R1 is connected to one end of the resistor R1 and the adjustable end thereof, the other end of the resistor R1 is connected to one end of the adjustable pin 1 of the diode D1 and the adjustable pin 1, the other end of the resistor R1 and the adjustable pin 1, the other end of the resistor R4 is connected to one end of a diode D2, the other end of the diode D2 is connected to one end of a capacitor C1 and the other end of a diode D1 and then connected with a pin 6 and a pin 2 of a controller U1, the other end of a capacitor C1 is connected to a pin 1 of the controller U1 and the other ends of the capacitor C2, a relay K, a diode D3 and a diode D5, a pin 3 of the controller U1 is connected to the relay K and one end of the diode D3, the input end of the wireless transceiver module is connected with the other end of a contact 1-1 and the other end of the diode D3, and the other end of the diode D3 and one end of the resistor R6 are also used as input ends of the circuit and connected with.
Due to the adoption of the scheme, the invention has the beneficial effects that: the invention solves the defects of the prior art, and provides an emergency street calling system which has the advantages that:
(1) according to the invention, the calling extension set is installed in the individual user in the cell, and the host computer is installed in the master monitoring office center in the cell, so that each cell has corresponding processing personnel, the success rate of calling the host computer by the individual user is improved, and the work efficiency for helping the individual personnel is also improved.
(2) The invention can realize the automatic circular calling of the calling extension to the host, so that the calling can be automatically carried out to the adjacent host when one host does not respond, and the calling success rate of the calling extension is improved.
(3) The invention suspends the calling to the previous host computer while calling to another host computer, thus only sending out information to one host computer when calling the extension telephone each time, will not occupy too much line, block the call of other calling extension telephone.
(4) The calling extension set of the invention adopts double power supplies to supply power, and can ensure stable power supply of the calling host when the mains supply is powered off so as to avoid the defect that emergency calling is suspended due to power failure.
Drawings
Fig. 1 is a schematic block diagram of a conventional emergency street call device.
Fig. 2 is a flowchart of a conventional calling device calling an extension to a host.
Fig. 3 is a circuit schematic of the timing circuit of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1-2, the emergency street call system includes a plurality of call extensions installed in the homes of the individual users in each cell of the street, and a host installed in the central office of each cell, so that the individual users can transmit information to the host through the call extensions in case of emergency, and the central office of each cell can arrange the staff to help the individual users.
The calling extension comprises a shell and an extension processing circuit located inside the shell, the extension processing circuit comprises an extension processor, a voice call module and a wireless receiving and sending module, the voice call module and the wireless receiving and sending module are connected with the output end of the extension processor, the extension processing circuit is electrically connected with a power supply source to supply power, and the extension processor stores address information of a host. Every host computer includes the shell and is located the inside host computer processing circuit of shell, host computer processing circuit includes host computer treater, voice conversation module and wireless transceiver module, and the address information that each calling extension was stored to the host computer treater is equipped with the display screen on the host computer shell, and the display screen is connected with the output of host computer treater, the display screen is connected outside commercial power with the power supply with the equal electricity of host computer processing circuit.
The calling extension sets transmit information to the host through the wireless transceiving modules arranged on the calling extension sets, and the host can receive information from each calling extension set through the wireless transceiving modules arranged on the host. The voice communication module arranged between the host and the calling extension can realize the communication between the host and the calling extension, thereby being more convenient for the communication between the staff of the community master monitoring office center and the single-living user to know the demand difficulty and help. The display screen on the host can display preset information of the calling extension which is transmitting information, such as the position of the calling extension and the like, so that the information of the extension can be conveniently processed by workers. The extension processor and the host processor are in AM3351, and the voice call module and the wireless transceiver module are common modules used in a conventional calling machine and can be purchased in the market, so the specific structure of the extension processor and the host processor is not described in detail.
Furthermore, a dial-through key is arranged on a shell of the calling extension and is connected with the input end of the extension processor, and the dial-through key is pressed down to control the wireless transceiver module electrically connected with the extension processor to start to transmit signals to the host. The shell of the host is provided with an answering key which is connected with the input end of the host processor. When the host receives a corresponding signal transmitted from the extension through the wireless transceiver module, the host presses the dial-through key, so that the host processor can be controlled to start working with the voice communication module electrically connected with the host processor, and the communication requirement is transmitted to the calling extension through the wireless transceiver module. After receiving the information from the host in the wireless transceiver module of the calling extension, the extension processor can start the voice communication module electrically connected with the extension processor, so that the communication between the host and the calling extension is realized, and the communication between the staff of the community master monitoring office center and the individual user is realized.
Furthermore, the extension processing circuit of the calling extension also comprises a timing circuit. The timing circuit is connected to a clock pin of the extension processor, the time for waiting for transmitting data by the wireless transceiver module when the calling extension is called can be set through the timing circuit, namely, a single-owned user presses a dial-through key on the calling extension to transmit information to the host, the timing circuit is started by a signal, the extension processor controls the wireless transceiver module electrically connected with the extension processor to send information to the host, if the host which is called is not received until the timing circuit times out, the timing circuit transmits the information to the extension processor, and the extension processor stops the wireless transceiver module to work, so that the calling extension suspends the transmission of the information to the host. If the host receives the information transmitted by the calling extension set in the timing circuit counting process, the timing circuit stops counting time, and resets by zero clearing until the next time the dial-on key is pressed, and the timing circuit starts timing.
As shown in FIG. 3, the timing circuit comprises resistors R1-R6, capacitors C1-C5, diodes D1-D6, a controller U1 and a relay K, wherein the model of the processor U1 is NE555, one end of the resistor R6 is connected to one ends of a capacitor C5 and a relay K contact 1-1, the other end of the resistor R6 is connected to the other end of the capacitor C5 and one ends of the diodes D4-D5, the other end of the diode D4 is connected to one ends of a diode D6, a capacitor C4 and a resistor R5, the other end of the resistor R5 is connected to a capacitor C3, one end of the resistor R1 is connected to a pin 8 and a pin 4 of the controller U1, the other end of the capacitor C3 is connected to the other ends of the capacitors C4 and the diodes D5-D6, the other end of the resistor R1 is connected to one end of a resistor R2 and an adjustable terminal thereof, the other end of the resistor R2 is connected to an adjustable terminal 3 and an adjustable pin 1 and a diode U1, the other end of the resistor R3 is connected to one end of a resistor R4 and an adjustable end thereof, the other end of the resistor R4 is connected to one end of a diode D2, the other end of the diode D2 is connected to one end of a capacitor C1 and the other end of a diode D1 and then connected with a pin 6 and a pin 2 of a controller U1, the other end of the capacitor C1 is connected to a pin 1 of a controller U1 and the other ends of the capacitor C2, a relay K, the diodes D3 and D5, a pin 3 of the controller U1 is connected to one ends of the relay K and the diode D3, the input end of the extension processor is connected with the other end of a contact 1-1 and the other end of the diode D3 respectively, and the other end of the diode D3 and one end of the resistor R6 are also used as input ends.
Specifically, after the push-through key is pressed, a timing circuit electrically connected with the push-through key is connected, signals are filtered by a resistor R6 and a capacitor C5, the situation that the signals transmitted to a subsequent circuit have miscellaneous interference is avoided, and stable working voltage is provided for a processor U1 after voltage stabilization is carried out through diodes D4-D6, capacitors C3-C4, resistors R5 and R1. When the timing circuit is just switched on, the voltage at two ends of the capacitor C1 is zero and cannot suddenly change, so that the pin 2 and the pin 6 of the processor U1 are at low level, the pin 3 outputs high level according to the working principle of an internal circuit of the processor U1, the relay K is attracted, the contact 1-1 of the relay K is closed, the wireless transceiver module is electrified to start working, meanwhile, the pin 7 of the processor U1 also outputs high level because the pin 3 of the processor U1 is at high level, the diode D1 is switched on, the diode D2 is cut off, the capacitor C1 can be charged through the resistors R1-R2, and the charging speed is adjusted by the resistor R2. When the voltage on the capacitor C1 rushes to a set value, the pin 1 and the pin 6 of the processor U1 become high level, then the pin 3 outputs low level, the relay K is released, the contact 1-1 is disconnected, the wireless transceiver module is powered off to stop sending information to the host, meanwhile, because the pin 3 of the processor U1 is low level, the pin 7 is also low level, the diode D1 is cut off, the diode D2 is turned on, the capacitor C1 can discharge through the resistors R4 and R3, the discharging speed is adjusted by the resistor R3, when the value on the capacitor C1 is reduced to the set value, the pin 2 and the pin 6 of the processor U1 become low level, the whole circuit repeats the above working procedure, and thus, the timing of the timing circuit is realized, and the slave processor can control the waiting time of the wireless transceiver module for transmitting information to the host.
Furthermore, the extension processor is also connected with a shift register, and the shift register stores digital signals of host address information of the main monitoring office center of each cell. Then after pressing the dial-up key, the shift register sends the first digital signal to the extension processor, so that the extension processor firstly inquires the host address information corresponding to the first digital signal, namely the host of the cell master monitoring office center, and starts the wireless transceiver module to transmit information to the host, and the timing circuit starts to work, if the host called by the extension processor does not answer until the timing circuit reaches, the timing circuit transmits information to the extension processor, the extension processor suspends the work of the wireless transceiver module, and after each timing circuit finishes timing, the shift register transmits a digital signal to the extension processor again, the extension processor will continue to inquire the host address information corresponding to the digital signal, so as to start the wireless transceiver module to transmit information to the host again, and the timing circuit works again, if the host reaches until the timing circuit reaches, if not, the extension processor stops the wireless transceiver module, and the extension processor will continue to inquire the address information of the next host and transmit the information to the next host, so as to automatically and circularly dial. In order to facilitate the single-resident user to quickly dial the host of the cell main monitoring office center and obtain real-time help, in this embodiment, the shift register only temporarily stores the host of the cell main monitoring office center where the extension call is located and the host digital information of the adjacent cell main monitoring office center, so that after the host transmitting information for the second time by the extension call has no response, the extension processor thereof can scan the information of the first host, i.e. the host of the cell main monitoring office center where the extension call is located, again, thereby controlling the wireless transceiving module thereof to transmit information to the host again. Therefore, the calling extension can automatically transmit the message to the host, and the problem that the host is not connected for a long time and the problem of the independent user at the calling extension cannot be solved. And through the arrangement of the shift register, the extension can automatically and circularly send information to the plurality of hosts, so that the success rate of connection between the calling extension and the hosts is improved.
Furthermore, because the calling extension set which needs to send information in a circulating mode has enough electric quantity, if the calling extension set is powered off suddenly, the calling of the calling extension set fails, and the calling of the independent user cannot be connected smoothly, so that the power supply of the calling extension set is supplied by double power sources in order to ensure that the calling extension set can not be powered off in the circulating calling process, namely, the extension set processing circuit of the calling extension set can be directly supplied with power through the mains supply, and can also be supplied with power through a battery when the power is off. Specifically, when the mains supply supplies power to the calling extension, the mains supply charges the battery at the same time to ensure the electric quantity of the battery, a change-over switch is arranged between the extension processing circuit and the power supply source, a movable end 1 of the change-over switch is connected with the output end of the mains supply, a movable end 2 of the change-over switch is connected with the output end of the battery, and a fixed end 3 of the change-over switch is connected with the extension processing circuit of the calling extension and used for supplying power to the extension processing circuit.
The movable end 1 of the change-over switch is provided with an electromagnet, the initial state of the change-over switch is that the movable end 2 is attracted with the immovable end 3, after the electromagnet is electrified, the attraction force is increased, the immovable end 3 of the change-over switch can be attracted with the movable end 1, and the movable end 2 is disconnected with the immovable end 3. When the mains supply is cut off, the voltage supplied to the branch processing circuit is gradually reduced, so that the suction force of the electromagnet is gradually weakened, the movable end 1 of the change-over switch can not be continuously attracted to the fixed end 3, and the fixed end 3 can be automatically recovered to the movable end 2, so that the change-over switch can switch a power supply source to the storage battery. After the mains supply is powered on, the output voltage of the mains supply is gradually increased, the suction force of the electromagnet is increased, so that the movable end 1 of the change-over switch is attracted with the fixed end 3 again, namely, the change-over switch switches the power supply of the extension processing circuit to the mains supply again, and meanwhile, the mains supply continues to charge the battery, so that the electric quantity of the battery is ensured, and the influence on the normal use of the calling extension when the power is cut off next time is avoided.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An emergency street call system, characterized by: the system comprises a plurality of calling extension sets and a host, wherein the calling extension sets are installed in the individual user homes of all the districts of a street, and the host is installed in a master monitoring office center of all the districts of the street; the calling extension comprises a shell and an extension processing circuit positioned in the shell, the extension processing circuit comprises an extension processor, a timing circuit, a shift register, a voice call module and a wireless transceiving module, the extension processor stores address information of a host, the host comprises the shell and a host processing circuit positioned in the shell, and the host processing circuit comprises a host processor, a voice call module and a wireless transceiving module;
a shift register: the shift register is connected with the extension processor, digital signals corresponding to the host address information are stored in the shift register, and the shift register transmits the signals to the extension processor, so that the extension processor can sequentially poll and scan the host address information corresponding to the extension processor and send messages to the corresponding host through the wireless transceiving module;
a timing circuit: the timing circuit is connected with the extension processor, and the time for waiting for calling the data transmission of the extension wireless transceiver module can be set through the timing circuit, so that the extension processor can transmit information to the wireless transceiver module to stop starting when the host computer does not receive the information after the timing of the timing circuit is finished, and meanwhile, the extension processor continuously inquires the address information of the next host computer.
2. The emergency street call system of claim 1, wherein: the host computer is characterized in that a display screen is arranged on the host computer shell and connected with the output end of the host computer processor, and the display screen and the host computer processing circuit are electrically connected with an external commercial power to supply power.
3. The emergency street call system of claim 1, wherein: the extension processing circuit is powered by double power supplies, the double power supplies comprise a commercial power and a battery, a change-over switch is arranged between the commercial power and the battery, a movable end 1 of the change-over switch is connected with an output end of the commercial power, a movable end 2 of the change-over switch is connected with an output end of the battery, and a fixed end 3 of the change-over switch is connected with the extension processing circuit calling the extension for supplying power to the extension processing circuit.
4. The emergency street call system of claim 1, wherein: the timing circuit comprises resistors R1-R1, capacitors C1-C1, diodes D1-D1, a controller U1 and a relay K, one end of the resistor R1 is connected to one ends of a contact 1-1 of the capacitor C1 and the relay K, the other end of the resistor R1 is connected to the other end of the capacitor C1 and one ends of the diodes D1-D1, the other end of the diode D1 is connected to one ends of the diodes D1, the capacitors C1 and the resistor R1, the other end of the resistor R1 is connected to the capacitor C1, one end of the resistor R1 is connected with a pin 8 and a pin 4 of the controller U1, the other end of the capacitor C1 is connected to the other ends of the capacitors C1 and the diodes D1, the other end of the resistor R1 is connected to one end of the resistor R1 and an adjustable end of the resistor R1, the other end of the resistor R1 is connected to one end of the adjustable pin 1 of the adjustable resistor R1 and the adjustable pin 1, the other end of the resistor R4 is connected to one end of a diode D2, the other end of the diode D2 is connected to one end of a capacitor C1 and the other end of a diode D1 and then connected with a pin 6 and a pin 2 of a controller U1, the other end of a capacitor C1 is connected to a pin 1 of the controller U1 and the other ends of the capacitor C2, a relay K, a diode D3 and a diode D5, a pin 3 of the controller U1 is connected to the relay K and one end of the diode D3, the input end of the wireless transceiver module is connected with the other end of a contact 1-1 and the other end of the diode D3, and the other end of the diode D3 and one end of the resistor R6 are also used as input ends of the circuit and connected with.
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| CN201911323504.6A CN111182164A (en) | 2019-12-20 | 2019-12-20 | Emergency street call system |
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| CN201911323504.6A CN111182164A (en) | 2019-12-20 | 2019-12-20 | Emergency street call system |
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| CN103986850A (en) * | 2014-05-30 | 2014-08-13 | 北京鑫丰南格科技有限责任公司 | Main telephone and extension telephone calling method and system |
| CN204334862U (en) * | 2014-12-22 | 2015-05-13 | 青岛乔威电子科技有限公司 | A kind of medical communication calling system Special answering equipment |
| CN104787637A (en) * | 2015-04-14 | 2015-07-22 | 广州市传洲电子科技有限公司 | Hybrid wireless elevator emergency help calling system |
| CN205754469U (en) * | 2016-06-30 | 2016-11-30 | 山东亚华电子股份有限公司 | Emergency Assistance extension set |
| CN108959142A (en) * | 2017-05-18 | 2018-12-07 | 欧姆龙(上海)有限公司 | Bus communication, device and system |
| CN208969811U (en) * | 2018-10-24 | 2019-06-11 | 成都君豪科技有限公司 | Urgent call extension set |
| CN109639917A (en) * | 2018-12-13 | 2019-04-16 | 山东亚华电子股份有限公司 | A kind of call forwarding control method and device |
| CN109474717A (en) * | 2018-12-18 | 2019-03-15 | 中信重工开诚智能装备有限公司 | A kind of connection of communication bus and address automatic allocating method |
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Application publication date: 20200519 |
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