CN110264693B - Device and method for converting wired main contact point signal into wireless signal for transmission - Google Patents
Device and method for converting wired main contact point signal into wireless signal for transmission Download PDFInfo
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- CN110264693B CN110264693B CN201910593037.2A CN201910593037A CN110264693B CN 110264693 B CN110264693 B CN 110264693B CN 201910593037 A CN201910593037 A CN 201910593037A CN 110264693 B CN110264693 B CN 110264693B
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a device and a method for converting a wired main contact signal into a wireless signal for transmission, wherein the device comprises a centralized acquisition unit and terminal equipment; the centralized acquisition unit comprises a wireless communication module, a power supply, an information receiving unit, an information acquisition unit and an intelligent control unit; the terminal equipment comprises a wireless communication unit, a dry contact input/output and control mechanism, a key, an indicator lamp, an MCU and a dry contact input signal selection. The wireless modules are respectively arranged at the two ends of the security equipment and the acquisition system, the USB-to-serial mode is adopted for connecting the collection and control device, the equipment with the dry contact function adopts an embedded mode, the information of the dry contact action is effectively and accurately transmitted to the acquisition center, and the operation is simple, fast and easy to implement.
Description
Technical Field
The invention relates to the technical field of wired and wireless communication and the like, and belongs to the intelligent home industry. The invention realizes the transformation of wireless transmission and the realization of functions of a wired product with dry contact output.
Background
Conventional security and protection equipment is connected to the acquisition system in a wired mode, namely, a dry contact is connected, time and labor are wasted, and construction cost is high.
The existing intelligent product with the security function cannot be directly connected with a centralized system acquisition system, simple equipment docking can be introduced into docking of the system, and project achievement and engineering implementation complexity are greatly increased.
Disclosure of Invention
The purpose of the invention is as follows: an apparatus and method for converting a wired trunk node signal into a wireless signal for transmission are provided to solve the above problems.
The technical scheme is as follows: a device for converting a wired main contact signal into a wireless signal for transmission comprises a centralized acquisition unit and terminal equipment;
the centralized acquisition unit comprises a wireless communication module, a power supply, an information receiving module, an information acquisition module and an intelligent control module;
the terminal equipment comprises a wireless communication unit, a dry contact input/output unit, a control mechanism, a key, an indicator lamp, an MCU and a dry contact input signal selection unit.
According to one aspect of the invention, the information acquisition module is monitoring equipment, an intelligent access control and an electronic fence, and specifically has the functions of remotely controlling the rotation, the focusing and the like of the monitoring equipment through a certain mechanical structure; the face head portrait is collected through the entrance guard, or the license plate number is transmitted to the control terminal and compared with the database, and intelligent entrance guard is achieved.
According to one aspect of the invention, the intelligent control module is capable of performing some of the arithmetic and control functions.
According to one aspect of the invention, the centralized acquisition unit further comprises an equipment connection indicator lamp, a setting key and a USB interface.
According to one aspect of the invention, the device connection indicator is used to indicate connection success/failure status and detection of data interaction.
According to one aspect of the invention, the setting key is used for an interactive entrance matched with the terminal equipment.
According to one aspect of the invention, the USB interface is used for convenient and fast access to an acquisition system.
According to one aspect of the invention, the wireless communication unit is used for receiving and sending wireless data, and information sent by the centralized acquisition unit adopts an AES-128 encryption mode and establishes a communication protocol to establish communication.
According to one aspect of the invention, the wireless communication unit is a Zigbee chip, a wifi chip, a z-wave chip, a 433MHz chip or a Bluetooth chip.
According to one aspect of the invention, the dry contact input/output comprises dry contacts with input and output functions, the dry contacts with the input function are used for transmitting information of state bit change of the control mechanism to the centralized acquisition unit for processing, displaying and presenting to a user, and the dry contacts with the output function are used for control commands sent by the centralized acquisition unit for executing switch-on or switch-off actions.
According to one aspect of the invention, the control mechanism is a relay operating circuit or feedback of on/off state.
According to one aspect of the invention, the keys and indicator lights are used to match a centralized collection unit.
According to one aspect of the invention, the MCU handles data analysis of the wireless signals.
According to one aspect of the invention, the dry contact input signal selection is used for solving the problem that an input or output signal is encountered in practical application, and the selection configuration is used for realizing the condition that both signals can be accessed.
According to one aspect of the invention, the power supply is an AC/DC or DC/DC constant voltage power supply, and converts the input AC mains power into a stable DC power required by each unit of the terminal equipment.
According to one aspect of the invention, the power supply circuit comprises a transformer TR1, a rectifier bridge BR1, an integrated circuit U1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a diode D1, a diode D2, a diode D3, a diode D4, a zener diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, and a junction field effect transistor Q1: A. junction field effect transistor Q1: B. a transistor Q2, a transistor Q3, and an inductor L1, wherein a 1 st pin of the transformer TR1 is connected to an input voltage, a 2 nd pin of the transformer TR1 is connected to an input voltage, a 3 rd pin of the transformer TR1 is connected to a 2 nd pin of the rectifier bridge BR1, a 4 th pin of the transformer TR1 is connected to a 3 rd pin of the rectifier bridge BR1, a 1 st pin of the rectifier bridge BR1 is grounded, a 4 th pin of the rectifier bridge BR1 is respectively connected to one end of the capacitor C1, one end of the capacitor C2, a 3 rd pin of the integrated circuit U1, and a negative electrode of the diode D1, the other end of the capacitor C1 is connected to the other end of the capacitor C2, one end of the capacitor C3, one end of the resistor R2, and one end of the capacitor C4, a 1 st pin of the integrated circuit U1 is respectively connected to the other end of the capacitor C3, and a positive electrode of the diode D2, One end of the resistor R1 is connected to the other end of the resistor R2, the 2 nd pin of the integrated circuit U1 is connected to the anode of the diode D1, the cathode of the diode D2, the other end of the resistor R1, the other end of the capacitor C4, one end of the capacitor C5, and one end of the resistor R3, the other end of the capacitor C5 is connected to the other end of the resistor R3 and the junction transistor Q1: the grid of the junction field effect transistor Q1: the source of the resistor A is connected with one end of the resistor R4, the other end of the resistor R4 is respectively connected with one end of the resistor R5, one end of the capacitor C8, one end of the capacitor C9, the emitter of the triode Q2 and the cathode of the zener diode D5, and the junction field effect transistor Q1: the drain electrode of A and the junction field effect transistor Q1: the drain electrode of B and one end of the capacitor C6 are connected with power supply voltage, and the junction field effect transistor Q1: the source of B is connected with the other end of the resistor R5, and the junction field effect transistor Q1: a gate of B is connected to the other end of the capacitor C6, the one end of the resistor R6, the one end of the capacitor C7, the one end of the inductor L1, and a negative electrode of the diode D3, the other end of the resistor R6 is connected to the one end of the resistor R7, the other end of the capacitor C7 is connected to the other end of the resistor R7 and a negative electrode of the diode D4, the other end of the inductor L1 is connected to a positive electrode of the diode D4, the other end of the capacitor C8, the one end of the resistor R8, the one end of the resistor R9, and the one end of the resistor R11, respectively, a collector of the transistor Q2, a base of the transistor Q2, and a base of the transistor Q3, the other end of the resistor R9 is connected to a collector of the transistor Q3, an emitter of the transistor Q3 is connected to one end of the resistor R10, the anode of the diode D3, the other end of the capacitor C9, the anode of the zener diode D5, the other end of the resistor R10 and the other end of the resistor R11 are all connected with an output voltage.
According to one aspect of the present invention, the power supply circuit is powered by dc power, and converts the input ac mains power into a stable dc power required by each module of the terminal device for the corresponding power conversion circuit.
A method for converting a wired main contact signal into a wireless signal for transmission comprises the following specific steps:
and 3, after success, the centralized acquisition unit and the terminal equipment realize communication.
Has the advantages that: the wireless modules are respectively arranged at the two ends of the security equipment and the acquisition system, the USB-to-serial mode is adopted for connecting the collection and control device, the equipment with the dry contact function adopts an embedded mode, the information of the dry contact action is effectively and accurately transmitted to the acquisition center, and the operation is simple, fast and easy to implement.
Drawings
FIG. 1 is a system block diagram of the present invention.
Fig. 2 is a schematic diagram of a centralized acquisition unit according to the present invention.
Fig. 3 is a schematic diagram of the power supply circuit of the present invention.
The figures are numbered: acquisition unit A, terminal equipment B, equipment connection pilot lamp 1, set up button 2, concentrate acquisition unit shell 3, USB interface 4.
Detailed Description
As shown in fig. 1, in this embodiment, an apparatus for converting a wired trunk node signal into a wireless signal for transmission includes a centralized acquisition unit a, a terminal device B;
the centralized acquisition unit comprises a wireless communication module, a power supply, an information receiving module, an information acquisition module and an intelligent control module;
the terminal equipment comprises a wireless communication unit, a dry contact input/output unit, a control mechanism, a key, an indicator lamp, an MCU and a dry contact input signal selection unit.
In a further embodiment, the information acquisition module is monitoring equipment, an intelligent access control and an electronic fence, and specifically has functions of remotely controlling the rotation, focusing and the like of the monitoring equipment through a certain mechanical structure; the face head portrait is collected through the entrance guard, or the license plate number is transmitted to the control terminal and compared with the database, and intelligent entrance guard is achieved.
In a further embodiment, the intelligent control module is capable of implementing some of the computational and control functions.
In a further embodiment, the centralized acquisition unit further comprises an equipment connection indicator lamp 1, a setting key 2 and a USB interface 4.
In a further embodiment, the device connection indicator light 1 is used to indicate a connection success/failure status and detection of data interaction.
In a further embodiment, the setting key 2 is used for an interactive portal matched with the terminal device.
In a further embodiment, the USB interface 4 is used for easy and fast access to the acquisition system.
In a further embodiment, the wireless communication unit is configured to receive and transmit wireless data, and the information sent by the centralized acquisition unit is encrypted by using AES-128, and a communication protocol is formulated to establish communication.
In a further embodiment, the wireless communication unit is a Zigbee chip, a wifi chip, a z-wave chip, a 433MHz chip, or a bluetooth chip.
In a further embodiment, the dry contact input/output comprises dry contacts with input and output functions, the dry contacts with the input function are used for transmitting the information of the state bit change of the control mechanism to the centralized acquisition unit for processing, displaying and presenting to a user, and the dry contacts with the output function are used for a control command sent by the centralized acquisition unit to execute the action of switching on or switching off the switch.
In a further embodiment, the control mechanism is a relay action circuit or feedback of on-off state.
In a further embodiment, the keys and indicator lights are used to match a centralized collection unit.
In a further embodiment, the MCU handles data analysis of the wireless signals.
In a further embodiment, the dry contact input signal selection is used for solving the problem that an input or output signal is encountered in practical application, and the selection configuration realizes the condition that both signals can be accessed.
In a further embodiment, the power supply is an AC/DC or DC/DC constant voltage power supply, and converts the input AC mains power into a stable DC power required by each unit of the terminal device.
In a further embodiment, the power supply circuit includes a transformer TR1, a rectifier bridge BR1, an integrated circuit U1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a diode D1, a diode D2, a diode D3, a diode D4, a zener diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, and a junction field effect transistor Q1: A. junction field effect transistor Q1: B. a transistor Q2, a transistor Q3, and an inductor L1, wherein a 1 st pin of the transformer TR1 is connected to an input voltage, a 2 nd pin of the transformer TR1 is connected to an input voltage, a 3 rd pin of the transformer TR1 is connected to a 2 nd pin of the rectifier bridge BR1, a 4 th pin of the transformer TR1 is connected to a 3 rd pin of the rectifier bridge BR1, a 1 st pin of the rectifier bridge BR1 is grounded, a 4 th pin of the rectifier bridge BR1 is respectively connected to one end of the capacitor C1, one end of the capacitor C2, a 3 rd pin of the integrated circuit U1, and a negative electrode of the diode D1, the other end of the capacitor C1 is connected to the other end of the capacitor C2, one end of the capacitor C3, one end of the resistor R2, and one end of the capacitor C4, a 1 st pin of the integrated circuit U1 is respectively connected to the other end of the capacitor C3, and a positive electrode of the diode D2, One end of the resistor R1 is connected to the other end of the resistor R2, the 2 nd pin of the integrated circuit U1 is connected to the anode of the diode D1, the cathode of the diode D2, the other end of the resistor R1, the other end of the capacitor C4, one end of the capacitor C5, and one end of the resistor R3, the other end of the capacitor C5 is connected to the other end of the resistor R3 and the junction transistor Q1: the grid of the junction field effect transistor Q1: the source of the resistor A is connected with one end of the resistor R4, the other end of the resistor R4 is respectively connected with one end of the resistor R5, one end of the capacitor C8, one end of the capacitor C9, the emitter of the triode Q2 and the cathode of the zener diode D5, and the junction field effect transistor Q1: the drain electrode of A and the junction field effect transistor Q1: the drain electrode of B and one end of the capacitor C6 are connected with power supply voltage, and the junction field effect transistor Q1: the source of B is connected with the other end of the resistor R5, and the junction field effect transistor Q1: a gate of B is connected to the other end of the capacitor C6, the one end of the resistor R6, the one end of the capacitor C7, the one end of the inductor L1, and a negative electrode of the diode D3, the other end of the resistor R6 is connected to the one end of the resistor R7, the other end of the capacitor C7 is connected to the other end of the resistor R7 and a negative electrode of the diode D4, the other end of the inductor L1 is connected to a positive electrode of the diode D4, the other end of the capacitor C8, the one end of the resistor R8, the one end of the resistor R9, and the one end of the resistor R11, respectively, a collector of the transistor Q2, a base of the transistor Q2, and a base of the transistor Q3, the other end of the resistor R9 is connected to a collector of the transistor Q3, an emitter of the transistor Q3 is connected to one end of the resistor R10, the anode of the diode D3, the other end of the capacitor C9, the anode of the zener diode D5, the other end of the resistor R10 and the other end of the resistor R11 are all connected with an output voltage.
In a further embodiment, each module of the terminal equipment needs a stable direct current power supply, the accessed alternating current commercial power is not matched with the terminal equipment, the power supply circuit adopts direct current power supply, and the input alternating current commercial power is converted into the stable direct current power supply required by each module of the terminal equipment for the corresponding power conversion circuit, so that the stable work of each module of the terminal equipment is ensured.
A method for converting a wired main contact signal into a wireless signal for transmission comprises the following specific steps:
and 3, after success, the centralized acquisition unit and the terminal equipment realize communication.
In summary, the present invention has the following advantages: the wireless modules are respectively arranged at the two ends of the security equipment and the acquisition system, the USB-to-serial mode is adopted for connecting the collection and control device, the equipment with the dry contact function adopts an embedded mode, the information of the dry contact action is effectively and accurately transmitted to the acquisition center, and the operation is simple, fast and easy to implement.
It should be noted that, it is within the scope of the present invention that the terminal device request matching is a power-on active request or is implemented by the number of times of pressing a key, and whether the terminal device request matching is successfully implemented by the number of times of normally lighting an indicator light.
It is within the scope of the present invention that the centralized capture unit either allows or disallows the number of times that the keys and indicator lights are allowed to pass.
For the terminal device, the selection of the input mode through one configuration is also the content described in the present invention.
Claims (1)
1. A method for converting a wired main contact signal into a wireless signal for transmission is characterized by comprising the following specific steps:
step 1, electrifying a centralized acquisition unit and terminal equipment, and starting matching and connection to realize data communication;
step 2, the terminal equipment is powered on or performs a connection request through the number of times of pressing keys, the centralized acquisition unit performs handshaking after receiving the request and sends a communication message to the terminal equipment, and at the moment, the centralized acquisition unit and the terminal equipment indicate whether the matching is successful or not through the normal lighting or the number of times of an indicator lamp and an equipment connection indicator lamp;
step 3, after success, the centralized acquisition unit and the terminal equipment realize communication;
the device for converting the wired main contact point signal into a wireless signal for transmission comprises a centralized acquisition unit and terminal equipment;
the centralized acquisition unit comprises a wireless communication module, a power supply, an information receiving module, an information acquisition module and an intelligent control module;
the terminal equipment comprises a wireless communication unit, a dry contact input/output, a control mechanism, a key, an indicator lamp, an MCU and a dry contact input signal selection unit;
the terminal equipment also comprises a power supply circuit which adopts direct current power supply and is a corresponding power supply conversion circuit;
the power supply circuit comprises a transformer TR1, a rectifier bridge BR1, an integrated circuit U1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a diode D1, a diode D2, a diode D3, a diode D4, a voltage stabilizing diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a junction field effect transistor Q1: A. junction field effect transistor Q1: B. a transistor Q2, a transistor Q3, and an inductor L1, wherein a 1 st pin of the transformer TR1 is connected to an input voltage, a 2 nd pin of the transformer TR1 is connected to an input voltage, a 3 rd pin of the transformer TR1 is connected to a 2 nd pin of the rectifier bridge BR1, a 4 th pin of the transformer TR1 is connected to a 3 rd pin of the rectifier bridge BR1, a 1 st pin of the rectifier bridge BR1 is grounded, a 4 th pin of the rectifier bridge BR1 is respectively connected to one end of the capacitor C1, one end of the capacitor C2, a 3 rd pin of the integrated circuit U1, and a negative electrode of the diode D1, the other end of the capacitor C1 is connected to the other end of the capacitor C2, one end of the capacitor C3, one end of the resistor R2, and one end of the capacitor C4, a 1 st pin of the integrated circuit U1 is respectively connected to the other end of the capacitor C3, and a positive electrode of the diode D2, One end of the resistor R1 is connected to the other end of the resistor R2, the 2 nd pin of the integrated circuit U1 is connected to the anode of the diode D1, the cathode of the diode D2, the other end of the resistor R1, the other end of the capacitor C4, one end of the capacitor C5, and one end of the resistor R3, the other end of the capacitor C5 is connected to the other end of the resistor R3 and the junction transistor Q1: the grid of the junction field effect transistor Q1: the source of the resistor A is connected with one end of the resistor R4, the other end of the resistor R4 is respectively connected with one end of the resistor R5, one end of the capacitor C8, one end of the capacitor C9, the emitter of the triode Q2 and the cathode of the zener diode D5, and the junction field effect transistor Q1: the drain electrode of A and the junction field effect transistor Q1: the drain electrode of B and one end of the capacitor C6 are connected with power supply voltage, and the junction field effect transistor Q1: the source of B is connected with the other end of the resistor R5, and the junction field effect transistor Q1: a gate of B is connected to the other end of the capacitor C6, the one end of the resistor R6, the one end of the capacitor C7, the one end of the inductor L1, and a negative electrode of the diode D3, the other end of the resistor R6 is connected to the one end of the resistor R7, the other end of the capacitor C7 is connected to the other end of the resistor R7 and a negative electrode of the diode D4, the other end of the inductor L1 is connected to a positive electrode of the diode D4, the other end of the capacitor C8, the one end of the resistor R8, the one end of the resistor R9, and the one end of the resistor R11, respectively, a collector of the transistor Q2, a base of the transistor Q2, and a base of the transistor Q3, the other end of the resistor R9 is connected to a collector of the transistor Q3, an emitter of the transistor Q3 is connected to one end of the resistor R10, the anode of the diode D3, the other end of the capacitor C9, the anode of the zener diode D5, the other end of the resistor R10 and the other end of the resistor R11 are all connected with an output voltage;
the information acquisition module is a monitoring device, an intelligent access control and an electronic fence;
the centralized acquisition unit also comprises an equipment connection indicator lamp, a setting key and a USB interface;
the wireless communication unit adopts an AES-128 encryption mode, formulates a communication protocol, and establishes communication with the centralized acquisition unit, wherein the communication is zigbee, wifi, z-wave, 433MHz or Bluetooth;
the dry contact input/output comprises dry contacts with input and output functions, the dry contacts with the input function are used for transmitting the information of the state bit change of the control mechanism to the centralized acquisition unit for processing, displaying and presenting to a user, and the dry contacts with the output function are used for executing the action of switching on or switching off of the switch according to the control command sent by the centralized acquisition unit;
the control mechanism is a relay action circuit or feedback of on-off state;
the power supply is an AC/DC (alternating current/direct current) or DC/DC constant voltage power supply;
the dry contact input signal selection unit is used for solving the problem that input or output signals can be encountered in practical application, and the condition that both signals can be accessed is realized through the selection configuration.
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