CN111432088B - Fire-fighting telephone communication method and system - Google Patents
Fire-fighting telephone communication method and system Download PDFInfo
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- CN111432088B CN111432088B CN202010450260.4A CN202010450260A CN111432088B CN 111432088 B CN111432088 B CN 111432088B CN 202010450260 A CN202010450260 A CN 202010450260A CN 111432088 B CN111432088 B CN 111432088B
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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
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
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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
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
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Abstract
The invention discloses a fire-fighting telephone communication method and a fire-fighting telephone communication system, which comprise the following steps: step 1, the fire-fighting host sends polling data frames to each fire-fighting extension every first time interval, and judges whether each fire-fighting extension is in an online state or a lost state; step 2, the fire-fighting host sends a communication operation frame to an on-line fire-fighting extension set needing communication within the interval time between every two polling data frames, or the fire-fighting extension set sends a communication operation frame to the fire-fighting host within the interval time between every two polling data frames; and 3, the fire-fighting host or the fire-fighting extension enters a conversation state when answering within the effective time of the conversation operation frame. The method of the invention is improved from the level of polling data frames, and the polling is simple and efficient in the communication process of the fire-fighting telephone through the mode of connecting the call within the call operation frame time, and the state of the fire-fighting extension can be judged.
Description
Technical Field
The patent relates to the field of telephone communication, in particular to a fire-fighting telephone communication method and system.
Background
The fire-fighting telephone system is a special device for fire-fighting communication, can provide a convenient and quick communication means when a fire alarm occurs, and is an indispensable communication device in a fire-fighting control and alarm system.
A general fire-fighting telephone system adopts a fire alarm bus and voice bus wiring mode, and when a fire alarm control system is installed on site, interference information can be generated, so that the voice of the fire-fighting telephone is interfered and unclear during conversation. When the fire control extension calls, the specific installation position of the fire control extension cannot be displayed, the position information cannot be flexibly set through the input equipment, only a few number of fire control extension calls are displayed, the display mode and the defect that the calls cannot be input need to be recorded on paper at any time when site construction is carried out, and the time is possibly delayed by adopting the mode. At present, the current of the existing fire-fighting extension set is overlarge, the driving capability of a voice bus is not strong, so that a fire-fighting telephone system only supports 2 fire-fighting extension sets at most to communicate with a fire-fighting host, when the current exceeds 2 fire-fighting extension sets, the total current feedback on the voice bus is overlarge, the voltage of the voice bus is reduced, the communication is not enough driven, and the communication and the voice are separately transmitted, and the fire-fighting telephone system is redundant and complex. Moreover, the existing fire fighting telephone system cannot judge the state of the fire fighting extension set, and the routing inspection function is complex.
Disclosure of Invention
The invention provides a fire-fighting telephone communication method and a fire-fighting telephone communication system, aiming at solving the problem of complex polling function in fire-fighting telephone communication in the prior art.
The invention provides a communication method of a fire telephone, which comprises the following steps: step 1, the fire-fighting host sends polling data frames to each fire-fighting extension every first time interval, and judges whether each fire-fighting extension is in an online state or a lost state; step 2, the fire-fighting host sends a communication operation frame to an on-line fire-fighting extension set needing communication within the interval time between every two polling data frames, or the fire-fighting extension set sends a communication operation frame to the fire-fighting host within the interval time between every two polling data frames; and 3, the fire-fighting host or the fire-fighting extension enters a conversation state when answering within the effective time of the conversation operation frame.
In the embodiment of the invention, the patrol data frame sent by the fire-fighting host consists of a start bit, a command bit, an address bit, a plurality of feedback bits corresponding to the number of the fire-fighting extension sets and a stop bit; each fire branch sends a low level with a certain duration to the fire host at a specified position in the polling data frame and the corresponding feedback position; and if the fire-fighting host receives the low level in the corresponding feedback position, judging that the corresponding fire-fighting extension set is in an online state, otherwise, judging that the corresponding fire-fighting extension set is in a lost state.
In the embodiment of the present invention, the call operation frame is composed of a start bit, a command bit, an address bit, and a stop bit.
In an embodiment of the present invention, the command bit, the previous one or more bits of the address bits are high level.
In the embodiment of the invention, when the fire-fighting host and the fire-fighting extension set enter a conversation state, the voice received by the fire-fighting host or the fire-fighting extension set is converted into the current signal to be transmitted, and the corresponding current signal is received by the fire-fighting host or the fire-fighting extension set and then converted into the voice to be played.
In an embodiment of the present invention, the current signal is low at the bus end.
The invention also provides a fire-fighting telephone system which comprises a fire-fighting host and at least one fire-fighting extension, and is characterized in that the fire-fighting host and the fire-fighting extension are communicated by any one of the fire-fighting telephone communication methods.
In an embodiment of the present invention, the fire-fighting host comprises: the power supply processing unit is used for generating voltage required by the work of the fire-fighting telephone system; the first on-hook and off-hook processing unit is used for judging the on-hook and off-hook state of the fire-fighting host; a key unit for receiving an input operation of a user; the first loudspeaker unit is used for sending out ringing and playing a recording file when a call comes; the first microphone horn unit is used for collecting user voice to carry out filtering processing, processing and playing the voice transmitted by the fire protection extension during the playing communication process, busy tone when the fire protection extension is hung up and ring back tone when the fire protection extension is not answered during the dialing out; the first and second bus processing units receive the voice or information output by the first processor unit and the first microphone loudspeaker unit to the fire-fighting extension set and can supply power to the fire-fighting extension set; and the first processor unit is used for processing each unit of the coordinated fire-fighting host.
In an embodiment of the invention, the fire branch comprises: the fire branch includes: the second off-hook and on-hook processing unit is used for judging the off-hook and on-hook states; the second microphone horn unit is used for collecting the user voice to carry out filtering processing, processing the voice transmitted by the fire protection extension during the playing communication process, the busy tone when the fire protection extension is hung up and the ring back tone when the fire protection extension is not answered during the dialing out of the telephone and then playing the processed voice; the second bus processing unit receives the voice or information output by the second processor unit and the second microphone loudspeaker unit to a fire-fighting owner; and the second processor unit is used for processing each unit of the coordinated fire branch.
In the embodiment of the invention, the key unit is internally provided with an input method which can be switched into different languages or numbers and can be used for arbitrarily setting the position of the fire fighting telephone equipment through input.
Compared with the prior art, the invention has the following beneficial effects:
1. the method of the invention is improved from the level of polling data frames, and the polling is simple and efficient in the communication process of the fire-fighting telephone through the mode of connecting the call within the call operation frame time, and the state of the fire-fighting extension can be judged.
2. The brand new two buses and the unique software and hardware noise reduction technology are adopted, so that the anti-interference capability of the system is improved, and when high-frequency signals such as electromagnetic interference exist in the field environment, the anti-interference effect is well achieved;
3. the fire-fighting telephone communication system is optimized, communication and voice are transmitted on the same line, the whole system is simple and efficient, and 3 fire-fighting extension sets and a fire-fighting host can be supported to communicate.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is an architectural diagram of a fire telephone system.
Fig. 2 is a diagram illustrating a format definition of a communication call message of the fire telephone system.
Fig. 3 is a message format diagram of a patrol frame of the fire telephone system.
Fig. 4 is an information interaction diagram of a fire fighting telephone system.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherein like or similar reference numbers indicate like or similar elements or have like or similar elements; the embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
In one embodiment, FIG. 1 illustrates the architecture of a fire fighting telephone system, as shown in FIG. 1, comprising: fire control host computer, fire control extension. The fire control host computer includes: the device comprises a first processor unit, a power supply processing unit, a first on-off and on-hook processing unit, a key unit, a first indicator light unit, a liquid crystal unit, a recording and playing unit, a first loudspeaker unit, a first microphone loudspeaker unit, a storage unit and a first and second bus processing unit. Fire control branch includes: the second processor unit, the second bus processing unit, the second off-hook and on-hook processing unit, the second indicator light unit and the second microphone horn unit.
The fire-fighting host and the fire-fighting extension are connected through two buses, and in the two buses, voice and conversation are transmitted on the same bus. The two bus processing units can communicate and talk with each other, and the first two bus processing units of the fire-fighting host can supply power for the fire-fighting extension set.
Specifically, the first and second bus processing units are used for rectifying information sent by the first processor unit of the fire-fighting host, and then sending the information to the fire-fighting extension set through the two buses, and the fire-fighting host can also receive the information after rectification through an IO code receiving pin.
In the fire-fighting host, a first processor unit is respectively connected with a power supply processing unit, a first on-off processing unit, a key unit, a first indicator light unit, a liquid crystal unit, a recording and playing unit, a loudspeaker unit, a first microphone loudspeaker unit, a storage unit and a first and second bus processing unit. Wherein the content of the first and second substances,
the first processor unit is used for processing each unit of the coordinated fire-fighting host, and can adopt an STM32F103VET6 chip, which comprises: fire control host computer CPU, peripheral crystal oscillator circuit, reset circuit.
The power supply processing unit can generate voltages of +24V, +12V, + 5V, +3.3V and the like required by system operation by isolating, reducing voltage and the like from an externally supplied 30V direct-current voltage source.
The first on-hook processing unit can judge the on-hook state through the GPIO port of the first processor unit of the fire-fighting host: if the GPIO port is changed from high to low and can be kept for a certain time, the GPIO port can be judged to be in an off-hook state; conversely, if the GPIO port changes from low to high and can be held for a certain time, the on-hook state can be determined.
The key unit can be composed of 25 keys, and can realize the functions of 0-9 digital keys, reset, silencing, self-checking, menu, playing/stopping, returning, confirming, up-down-left-right keys, calling, hanging up, two symbol key points and negative operation in a 5-by-5 matrix type row-column scanning mode through 10 GPIO ports of a first processor unit of the fire-fighting host. Furthermore, the button processing unit is internally provided with a T9 input method, and the position description of the fire fighting telephone equipment can be set arbitrarily. Specifically, different input information can be realized by switching between numbers, Chinese characters and English capital and small cases of the input method.
The first indicator light unit can realize the functions of power supply, calling, talking, recording, playing, full recording, failure and silencing of the 8 indicator lights through 8 GPIO ports of a CPU of the fire-fighting host.
The liquid crystal unit can adopt a liquid crystal screen with 128-64 lattice, and the liquid crystal display function can be realized by a parallel port mode of the liquid crystal screen. Specifically, when the fire control extension calls, the display mode can be visual and convenient, and the position where the fire control extension is specifically installed can be displayed. When the address of the fire branch is lost, the fire branch can be visually displayed to be in an off-line state.
This recording broadcast unit can realize carrying out the function of recording operation when fire engine and fire control extension conversation, also can realize carrying out the function of preserving to the recording file. And when the recording file needs to be played, the previously stored recording file can be played by pressing the corresponding playing key in the playing interface.
The first speaker unit includes: the loudspeaker and the driver chip, it is preferred that the driver chip is the LM386 chip, and this driver chip can increase mains voltage to 9V. The loudspeaker unit can be used for processing ringing sent by the fire fighting host when the fire fighting extension is in a call, and can also be used for playing sound when a recording file needs to be played.
The first microphone and horn unit comprises a microphone, a horn and an amplifying and filtering circuit, wherein the microphone can be used for converting a sound signal into a current signal; the loudspeaker can be used for playing the sound of the fire-fighting extension set in the conversation process, and can also be used for playing busy tone when the fire-fighting extension set is hung up and ring back tone when the fire-fighting extension set dials out a telephone and does not answer.
The storage unit can be used for storing call record events of the fire-fighting host and the fire-fighting extension and address loss events of the fire-fighting extension; the storage unit can store 10000 events.
In the fire branch, the second processor unit is respectively connected with the second bus processing unit, the second off-hook and on-hook processing unit, the second indicator light unit and the second microphone horn unit. Wherein the content of the first and second substances,
the second processor unit is used for processing each unit of the coordinated fire branch, and can adopt an MC9S08PA4 chip, which comprises: fire control extension CPU, peripheral crystal oscillator circuit, reset circuit.
The second on-hook processing unit can judge the on-hook state through a GPIO port of the CPU of the fire branch: if the GPIO port is changed from high to low and can be kept for a certain time, the GPIO port can be judged to be in an off-hook state; on the contrary, if the GPIO port changes from low to high and can be maintained for a certain time, the on-hook state can be determined.
The second indicator light unit can realize the on/off function through a GPIO port of the fire protection extension CPU. Specifically, after the routing inspection message is received for feedback, the indicator light is lightened; when talking, the indicator light will be on.
The second microphone and horn unit comprises a microphone, a horn and an amplifying and filtering circuit, can be used for converting sound signals into current signals, can also be used for playing the sound of the fire-fighting host in the conversation process, and can also be used for playing busy tones when the fire-fighting host is hung up, ring-back tones when the fire-fighting host dials out a telephone and is not answered, and ringing tones of the fire-fighting extension when the fire-fighting host calls.
Fig. 2 shows the communication call message format definition of the fire fighting telephone system, as shown in fig. 2, the IO port sending pin of the fire fighting host CPU can send a 70us high-low level pulse cluster, which lasts for T1, and then the pulse cluster is rectified by the two bus processing units and sent to the fire fighting extension in a current signal manner, at this time, the fire fighting extension receives a low level with a time length of T1, and at the same time, the code receiving pin of the IO port of the fire fighting host CPU can also receive a low level with a time length of T1. The rectification mode adopted by the high-low pulse clusters has good anti-interference effect on the bus end because the bus end is still at low level when the field environment has high-frequency interference. The IO port of fire control host computer CPU sends the pin and can sends the low level, and this sustainable time of low level is T2, then rectifies through two bus processing units, sends for fire control extension with current signal's mode again, and the high level that length of time is T2 is received to the fire control extension this moment, and the receipts of the IO port of fire control host computer CPU also can receive the high level of length of time T2 simultaneously. Defining a fire-fighting host: the combination of high and low T1+ T2 is the start bit decision of the transmitted signal followed by the 0 code, 1 code, and feedback code in that order. Likewise, the fire branch is defined similarly.
The definition made to the fire-fighting host is specifically that from the code sending pin of the IO port of the fire-fighting host CPU, the combination of the specified start bits is: high-low level pulse cluster with the duration of 4T and low level of 1T. As a general example, the duration of 1T is 4.2ms, and then the duration of 4T is 16.8ms, and at this time, it is necessary to transmit the 70us high-low level pulse cluster 240 times; the low level of 1T is sent immediately. After the processing of the two-bus processing unit, the state of the level signal on the two buses is 4T low level, and is followed by 1T high level. Meanwhile, a code receiving pin of an IO port of a CPU of the fire-fighting host can also receive a low level with the duration of 4T and then a high level with the duration of 1T.
From the code sending pin of the IO port of the fire-fighting host CPU, the combination of the specified 0 code is as follows: high-low level pulse cluster with the duration of 1T and low level of 1T. As a general example, the duration of 1T is 4.2ms, and then 70us high-low level pulse clusters need to be sent 60 times; the low level of 1T is sent immediately. After the processing of the two-bus processing unit, the state of the level signal on the two buses is 1T low level, and is followed by 1T high level. Meanwhile, a code receiving pin of an IO port of a CPU of the fire-fighting host can also receive a low level with the duration of 1T, and then a high level with the duration of 1T.
From the code sending pin of the IO port of the fire-fighting host CPU, the combination of the specified 1 code is as follows: high-low level pulse cluster with the duration of 2T and low level of 1T. As a general example, the duration of 1T is 4.2ms, and then the duration of 2T is 8.4ms, and at this time, it is necessary to transmit 70us high-low level pulse clusters 120 times; the low level of 1T is sent immediately. After the processing of the two-bus processing unit, the state of the level signal on the two buses is 2T low level, and is followed by 1T high level. Meanwhile, a code receiving pin of an IO port of a CPU of the fire-fighting host can also receive a low level with the duration of 2T and then a high level with the duration of 1T.
From the code sending pin of the IO port of the fire-fighting host CPU, the combination of the specified feedback bits is as follows: high-low level pulse cluster with the duration of 3T and low level of 3T. As a general example, the duration of 1T is 4.2ms, and then the duration of 3T is 12.6ms, and at this time, 70us high-low level pulse clusters need to be sent 180 times; a low level of 3T is sent immediately. After the processing of the two-bus processing unit, the state of the level signal on the two buses is 3T low level, and is followed by 3T high level. Meanwhile, a code receiving pin of an IO port of a CPU of the fire-fighting host can also receive a low level with the duration of 3T, and then a high level with the duration of 3T.
Fig. 3 shows a message format of a patrol frame of the fire fighting telephone system, and as shown in fig. 3, one frame of data has 118 bits including a 1-bit start bit, 8-bit command bits (upper bits before), 8-bit address bits (upper bits before), 100-bit feedback bits, and 1-bit stop bit. Where the 100-bit feedback bits represent feedback for 100 addresses. The command byte is 0x01, the address byte is 0x00, and the stop bit is 0 code. The fire-fighting host patrols 100 addresses once and patrols once every 18 s. The communication mode is that the fire-fighting host computer initiatively sends a signal, the fire-fighting extension answers, and the fire-fighting extension pulls down 1T level in the middle position of the high level of 3T of the feedback position after receiving the patrol frame. The 1T level is pulled down by the fire branch, and the 1T level is pulled down by sending 70us high-low pulse clusters with the duration of 1T. If the fire host does not receive a low level at the corresponding address, the address is considered to be in a lost state.
The idle time of the two buses is used for the conversation between the fire-fighting host and the fire-fighting extension. The call operation frame specifically includes: a frame of data has 18 bits, including: 1-bit start bit, 8-bit command bit (high bit before), 8-bit address bit (high bit before), and 1-bit stop bit. Wherein different command bytes are used to represent different functions. The fire-fighting host calls the fire-fighting extension set, and the fire-fighting extension set answers the call; the fire-fighting main machine hangs up the fire-fighting extension set, and the fire-fighting extension set responds to hang up; the fire fighting extension picks up the incoming call, and the fire fighting host answers the pick-up; the fire-fighting extension is hung up, and the fire-fighting host responds to the hanging up; reading addresses by the fire-fighting host, and reading addresses by the fire-fighting extension in response; the fire-fighting host writes the address, and the fire-fighting extension answers the address.
The communication functions of the fire-fighting host and the fire-fighting extension are divided into a polling function and a communication operation function. Wherein, the conversation operation function includes: calling, incoming call, conversation. The fire-fighting host can display the three call operation functions with the fire branch. When the fire-fighting extension is off-hook, the fire-fighting host rings, the interface displays the number, the position information, the address and the incoming call state of the multi-span area of the fire-fighting extension, and when the fire-fighting extension is off-hook, the interface converts the incoming call state into the call state. When the fire-fighting telephone actively calls a certain fire-fighting extension, the fire-fighting host is off-hook, the address number of the fire-fighting extension is dialed, the fire-fighting host interface displays the floor number, the position information, the address and the calling state of the fire-fighting extension at the moment, the fire-fighting extension rings at the moment, and if the fire-fighting extension is off-hook, the fire-fighting host interface is changed from the calling state to the conversation state. And the design of the human-computer interface is simple and convenient, and three states of conversation, calling and incoming call can be displayed through one interface. The two bus interfaces provided by the fire-fighting host can be connected with 100 fire-fighting extensions, the conversation of 10 fire-fighting extensions can be realized simultaneously in a middle-short distance theoretically, the conversation of 3 fire-fighting extensions can be realized simultaneously under a long-distance condition, and the fire-fighting host supports the simultaneous access of 3 fire-fighting extensions for conversation so as to realize 4-party conversation. The connection mode of the fire-fighting main machine and the fire-fighting extension set comprises the following two modes:
1. the fire-fighting host computer picks up the phone, after the address of the fire-fighting extension set is input on the liquid crystal control panel, the fire-fighting host computer can actively send a message calling the fire-fighting extension set, the message is sent to the two voice buses according to a specific communication protocol rule, and at the moment, the fire-fighting host computer can control a receiver loudspeaker to output a calling ring-back tone. All the fire-fighting extension sets connected to the voice two-bus detect the message data through the code receiving pins and analyze the message according to the communication protocol rule, and the fire-fighting extension sets judge whether the address is the address of the fire-fighting extension sets or not according to the pulse width of high and low levels and the definition of the communication operation frame, and if the address is not the address of the fire-fighting extension sets, the address is not processed. When the extension sets judge that the address is the address of the extension sets, the extension sets connect a communication loop (a voice circuit comprising a microphone and a loudspeaker) to the two voice buses and control the loudspeaker to generate ringing. The microphone of the fire protection extension is taken up at the moment, the fire protection extension can send out an off-hook message, the ring-back tone of the loudspeaker of the fire protection extension is closed after the fire protection host receives the off-hook message, the communication loop (comprising a voice circuit of the microphone and the loudspeaker) is connected to the two voice buses, and the fire protection host and the fire protection extension enter a communication state at the moment: after the fire-fighting host computer inputs the voice, the voice is converted into a current signal through the microphone, and the horn of the fire-fighting extension computer is used for restoring the current signal on the two buses into the voice to be played; or, after the fire control extension inputted sound, the sound was converted into current signal through the miaow head, and the loudspeaker of the fire control host computer was used for restoring the current signal on the two buses into sound and played.
If the fire-fighting host computer wants to call the 2 nd fire-fighting extension set, the fire-fighting host computer inputs the address of the 2 nd fire-fighting extension set on the liquid crystal interface, presses down the key, and the fire-fighting host computer actively sends a message for calling the 2 nd fire-fighting extension set, and the message is sent to the two voice buses according to the communication protocol rule. Likewise, the same is true for the case where the fire host calls the 3 rd fire branch.
2. The fire-fighting host computer is not off-hook, the fire-fighting extension telephone is on, and the fire-fighting extension telephone actively sends a message for calling the fire-fighting host computer. The message is sent to the voice two-bus according to the communication protocol rule, and the fire branch can control the receiver loudspeaker to output the calling ring back tone. The fire-fighting host and all the fire-fighting extension sets connected to the voice two-bus detect the message data through the code receiving pins and analyze the message according to the communication protocol rule, and the fire-fighting host and the fire-fighting extension sets judge whether the address is the own address or not according to the pulse width of high and low levels and the definition of a communication operation frame, and if the address is not the own address, the address is not processed. When the fire-fighting host judges that the address is the own address, a communication loop of the fire-fighting host (comprising a voice circuit of a microphone and a loudspeaker) is connected to the two voice buses, and the fire-fighting host generates ringing sound by controlling the loudspeaker. At the moment, the fire-fighting host machine is off-hooked, the fire-fighting host machine sends out an off-hook message, the fire-fighting extension calling the fire-fighting host machine closes the ring-back tone of the loudspeaker of the fire-fighting extension after receiving the off-hook message of the fire-fighting host machine, a communication loop (comprising a microphone and a voice circuit of the loudspeaker) is connected to the two voice buses, and the fire-fighting host machine and the fire-fighting extension enter a communication state at the moment: after the fire-fighting host computer inputs the voice, the voice is converted into a current signal through the microphone, and the horn of the fire-fighting extension computer is used for restoring the current signal on the two buses into the voice to be played; or, after the fire control extension inputted sound, the sound was converted into current signal through the miaow head, and the loudspeaker of the fire control host computer was used for restoring the current signal on the two buses into sound and played.
If the 2 nd fire-fighting extension phone calls the fire-fighting main machine at this time, the operation method is the same as that of the 1 st fire-fighting extension phone calling the fire-fighting main machine. At the moment, the fire-fighting host and the 1 st fire-fighting extension set are already in communication, when the 2 nd fire-fighting extension set calls in, the fire-fighting host receives a calling message of the 2 nd fire-fighting extension set, the calling state of the 2 nd fire-fighting extension set can be displayed on a liquid crystal interface of the fire-fighting host, and the fire-fighting host can selectively access or refuse through the interface and the keys. If the fire-fighting host selects to access the 2 nd fire-fighting extension, the fire-fighting host sends an off-hook message to the 2 nd fire-fighting extension, the 2 nd fire-fighting extension closes the ring-back tone of the loudspeaker after receiving the off-hook message, and accesses a communication loop (comprising a microphone and a voice circuit of the loudspeaker) to the voice two-bus, and the fire-fighting host and the fire-fighting extension enter a communication state at the moment: after the fire-fighting host inputs the sound, the sound is converted into a current signal through the microphone, and a horn of the 2 nd fire-fighting extension is used for restoring the current signal on the two buses into the sound to be played; or, 2 nd fire control extension input sound back, sound is converted into current signal through the miaow head, and the loudspeaker of fire control host computer is used for restoring the current signal on the two buses into sound and plays. Likewise, the case of the 3 rd fire branch calling the fire main unit is also the same.
Fig. 4 shows the information interaction steps of the fire fighting telephone system, as shown in fig. 4, which are as follows:
And 2.1, sending a ringing tone after the fire-fighting extension receives the message calling the address. If the microphone of the extension set is picked up, the extension set sends an answering call message to the fire host. The message format is as follows: start bit + command byte + address byte + stop bit. At the moment, the fire-fighting host and the fire-fighting extension set realize conversation, and the interface of the fire-fighting host is updated to be in a conversation state.
And 2.2, after receiving the message calling the address, the fire-fighting extension set sends out a ringing tone. If the microphone of the fire branch is not picked up at the moment, the fire host terminates the fire branch. Wherein, the fire control host computer terminates the mode that the microphone of fire control host computer on the one hand can directly be hung a telephone with the fire control host computer, and on the other hand accessible fire control host computer's interface is selected and is terminated this fire control extension.
And 3, if the fire-fighting host and the fire-fighting extension set are in a conversation state, and a new fire-fighting extension set needs to be called at the moment, pressing a (calling) key under the current interface, and updating the interface into an interface for inputting a fire-fighting extension set number to dial at the moment, so that 4-party conversation can be realized.
And 4, on the basis of the step 2.1, if a new fire branch phone calls at the moment, displaying that the connected fire branch phone is in a call state and the new fire branch phone is in a call state on an interface. If a new extension set needs to be accessed, a [ calling ] key is pressed, an interface selection access interface is entered, a corresponding key is pressed for access, and at the moment, information of two extension sets of fire fighting displayed on the interface, the connected extension set of fire fighting and the new extension set of fire fighting are in a conversation state. If another extension fire protection machine needs to be called at the moment, the interface displays that the connected extension fire protection machine and the new extension fire protection machine are in a conversation state and the other extension fire protection machine is in a calling state according to the operation implementation of the step 3.
In one embodiment, the information interaction of the fire fighting telephone system specifically comprises the following steps:
Step 2.1.10 number fire-fighting extension set sends ringing sound after receiving message calling the address. If the No. 10 fire protection extension set is off-hook at the moment, the No. 10 fire protection extension set sends an answering call message to the fire protection host. At the moment, the fire-fighting host and the fire-fighting extension set realize conversation, and the interface of the fire-fighting host is updated to be in a conversation state.
Step 2.2.10, after receiving the message calling the address, the extension set sends out ringing sound. If the No. 10 fire protection extension set does not go off hook at the moment, the fire protection host selects the on hook directly through the on hook or indirectly through an interface of the fire protection host to terminate the No. 10 fire protection extension set.
And 3, the fire-fighting host and the number 10 fire-fighting extension set are in a conversation state, at the moment, the number 15 fire-fighting extension set needs to be called, the [ calling ] key can be pressed under the current interface, and at the moment, the interface is updated to a new interface for inputting the number of the fire-fighting extension set to dial. In the same step 1, after the fire branch number is input, the [ call ] key is pressed, and at the moment, the interface displays information of two fire branch numbers, wherein one fire branch number is 10, and the other fire branch number is 15. If the No. 15 fire branch is off-hook, the No. 15 fire branch on the interface is displayed as a call state. If the 28 th fire protection extension telephone needs to be called, and the step 1 and the step 2.1 are repeated, the interface displays that the 10 th, 15 th and 28 th fire protection extensions are in a conversation state, and 4-party conversation is realized.
And 4, on the basis of the step 2.1, if the No. 20 fire branch station calls, displaying that the No. 10 fire branch station is in a call state and the No. 20 fire branch station is in a call state on an interface. If the number 20 fire-fighting extension set needs to be accessed, pressing a (calling) key to enter an interface to select an access interface, pressing a corresponding key to access, and displaying two pieces of fire-fighting extension set information on the interface at the moment: no. 10 fire control extension, No. 20 fire control extension are all in conversation state. If the 25 th fire protection extension needs to be called at the moment, the operation according to the step 3 is carried out, the interface displays that the 10 th fire protection extension and the 20 th fire protection extension are in a conversation state, and the 25 th fire protection extension is in a calling state.
In addition, when the fire fighting host and the fire fighting extension are in the patrol inspection state, and the fire fighting extension is powered on in the bus idle time, the loudspeaker of the fire fighting host sends out a ringing tone, and the interface displays the power on state of the fire fighting extension. And if the fire-fighting host is off-hook at the moment, entering a conversation state. After the main fire-fighting machine is off-hook, the extension fire-fighting machine can be selected to be stopped through the interface, after the extension fire-fighting machine is stopped, the microphone of the extension fire-fighting machine has busy tone prompt sound, and the extension fire-fighting machine is on-hook. The fire-fighting extension set can also actively hang up the fire-fighting host, and the microphone of the fire-fighting host has busy tone prompt sound at the moment.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "connected," "including," and the like are to be construed broadly, and specific meanings of the terms may be understood by those skilled in the art as appropriate.
In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A communication method of a fire telephone is characterized by comprising the following steps:
step 1, the fire-fighting host sends polling data frames to each fire-fighting extension every first time interval, and judges whether each fire-fighting extension is in an online state or a lost state;
step 2, the fire-fighting host sends a communication operation frame to an on-line fire-fighting extension set needing communication within the interval time between every two polling data frames, or the fire-fighting extension set sends a communication operation frame to the fire-fighting host within the interval time between every two polling data frames;
and 3, the fire-fighting host or the fire-fighting extension enters a conversation state when answering within the effective time of the conversation operation frame.
2. The fire fighting telephone communication method according to claim 1, wherein the patrol data frame transmitted by the fire fighting host is composed of a start bit, a command bit, an address bit, a plurality of feedback bits corresponding to the number of the fire fighting extension sets, and a stop bit;
each fire branch sends a low level with a certain duration to the fire host at a specified position in the polling data frame and the corresponding feedback position;
and if the fire-fighting host receives the low level in the corresponding feedback position, judging that the corresponding fire-fighting extension set is in an online state, otherwise, judging that the corresponding fire-fighting extension set is in a lost state.
3. The fire fighting telephone communication method according to claim 1, wherein the call operation frame is composed of a start bit, a command bit, an address bit, and a stop bit.
4. A fire telephone communication method according to claim 2 or 3, wherein the command bit and one or more bits preceding the address bit are high level.
5. The communication method of the fire fighting phone according to claim 1, wherein when the fire fighting host and the fire fighting extension set enter a conversation state, the voice received by the fire fighting host or the fire fighting extension set is converted into a current signal for transmission, and the corresponding current signal is received by the fire fighting host or the fire fighting extension set and then converted into the voice for playing.
6. The fire fighting telephone communication method as recited in claim 5, wherein the current signal is low at the bus terminal.
7. A fire fighting telephone system comprising a fire fighting host and at least one fire fighting extension, wherein the fire fighting host and the fire fighting extension communicate with each other by the method of communication of the fire fighting telephone of any one of claims 1 to 6.
8. A fire fighting telephony system as recited in claim 7, wherein the fire fighting host comprises:
the power supply processing unit is used for generating voltage required by the work of the fire-fighting telephone system;
the first on-hook and off-hook processing unit is used for judging the on-hook and off-hook state of the fire-fighting host;
a key unit for receiving an input operation of a user;
the first loudspeaker unit is used for sending out ringing and playing a recording file when a call comes;
the first microphone horn unit is used for collecting user voice to carry out filtering processing, processing and playing the voice transmitted by the fire protection extension during the playing communication process, busy tone when the fire protection extension is hung up and ring back tone when the fire protection extension is not answered during the dialing out;
the first and second bus processing units receive the voice or information output by the first processor unit and the first microphone loudspeaker unit to the fire-fighting extension set and can supply power to the fire-fighting extension set;
and the first processor unit is used for processing each unit of the coordinated fire-fighting host.
9. A fire fighting telephone system as recited in claim 7, wherein said fire fighting extension includes:
the second off-hook and on-hook processing unit is used for judging the off-hook and on-hook states;
the second microphone horn unit is used for collecting the user voice to carry out filtering processing, processing the voice transmitted by the fire protection extension during the playing communication process, the busy tone when the fire protection extension is hung up and the ring back tone when the fire protection extension is not answered during the dialing out of the telephone and then playing the processed voice;
the second bus processing unit receives the voice or information output by the second processor unit and the second microphone loudspeaker unit to the fire-fighting host;
and the second processor unit is used for processing each unit of the coordinated fire branch.
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