CN210807315U - Gateway applied to monitoring system - Google Patents
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- CN210807315U CN210807315U CN201922260029.4U CN201922260029U CN210807315U CN 210807315 U CN210807315 U CN 210807315U CN 201922260029 U CN201922260029 U CN 201922260029U CN 210807315 U CN210807315 U CN 210807315U
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Abstract
The utility model discloses a gateway applied to a monitoring system, which comprises a microprocessor for packaging data, a communication module, a 3G/4G module and a clock module, wherein the communication module is connected with the microprocessor and a sensor acquisition instrument of the monitoring system and sends the acquisition data of the sensor acquisition instrument to the microprocessor; the microprocessor logs in a 3G/4G wireless network through the 3G/4G module and is connected with a plurality of data centers, and network time and return data issued by the data centers are obtained through the 3G/4G module; the clock module is connected with the microprocessor and provides acquisition time synchronized with network time for the microprocessor. The utility model discloses the gateway can be with the data encapsulation that the data acquisition becomes to have acquisition time and validity check code, realizes interacting with a plurality of data centers to data center can know acquisition time and carry out validity detection to the data acquisition according to the data acquisition, guarantees data acquisition's real-time and monitoring system's security.
Description
Technical Field
The utility model relates to a computer communication technical field, in particular to be applied to monitoring system's gateway.
Background
With the rapid development of the internet of things, the requirements of various monitoring systems on data acquisition are higher, most of the existing monitoring systems for bridge detection, pollution source monitoring, water conservancy condition monitoring and the like adopt a wired network for data acquisition, but the cost is higher by adopting a wired mode, the laying of a line is very complicated, and the adoption of a 4G communication gateway is a better solution.
Most of the existing 4G communication gateways are dedicated to data transmission, and better specialized customization is not carried out aiming at monitoring and collecting application scenes. The communication gateway can only transmit data to a single data center, the backup of multiple data centers is not considered, the transmitted data is not processed, the data center cannot acquire data acquisition time, and the effectiveness detection of the acquired data cannot be carried out, so that the real-time performance of system data acquisition and the safety of the whole monitoring system are seriously influenced. Therefore, it is necessary to develop a communication gateway capable of solving the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming and not enough, provide a be applied to monitoring system's gateway, this gateway can be packaged into the data that have acquisition time and validity check code with data acquisition, realizes interacting with a plurality of data centers, guarantees data acquisition's real-time and monitoring system's security.
The purpose of the utility model is realized through the following technical scheme: a gateway for use in a monitoring system, comprising: a microprocessor for encapsulating data, a communication module, a 3G/4G module and a clock module, wherein,
the communication module is connected with the microprocessor and a sensor acquisition instrument of the monitoring system and sends the acquired data of the sensor acquisition instrument to the microprocessor;
the microprocessor logs in a 3G/4G wireless network through the 3G/4G module and is connected with a plurality of data centers, and network time and return data issued by the data centers are obtained through the 3G/4G module;
the clock module is connected with the microprocessor and provides acquisition time synchronized with network time for the microprocessor.
Preferably, the package format adopted by the microprocessor to package the acquired data is a JSON format, and the packaged JSON packet comprises a sensor ID, acquisition time, acquired data and an validity check code.
Preferably, the data center issues two types of return data, namely data issued to the sensor acquisition instrument and a control instruction of the gateway;
when the returned data is a control instruction, the control instruction comprises a judgment lead code and a JSON packet, wherein the judgment lead code consists of the first two bytes which respectively represent a protocol version and an FCtrl identifier; the JSON packet is gateway configuration information.
Preferably, the microprocessor is connected with the local upper computer through the communication module, and acquires gateway configuration information sent by the local upper computer through the communication module.
Furthermore, the gateway device also comprises a storage module connected with the microprocessor, wherein the storage module stores gateway configuration information and acquisition data;
the configuration parameters in the gateway configuration information include: the data center IP/domain name, the port number and the connection mode of each data center, whether to package and collect data, whether to restart, the sensor ID of a sensor connected with a sensor collector, an effectiveness check code, a gateway login packet, a heartbeat packet, the interval time of the heartbeat packet and the baud rate of an interface in a communication module.
Preferably, the communication module comprises an RS485 interface module, an RS232 interface module and a Bluetooth module, and the microprocessor is communicated with the sensor acquisition instrument through the RS485 interface module, the RS232 interface module or the Bluetooth module.
Furthermore, an EMC protection circuit is respectively arranged in the RS485 interface module and the RS232 interface module.
Preferably, the 3G/4G wireless module adopts a remote EC20 series module or a fused AIR720 series module.
Preferably, the intelligent power supply also comprises a power supply module and a first state display module, wherein a power supply management circuit and an EMC protection circuit connected with the power supply management circuit are arranged in the power supply module, and the power supply management circuit is connected with the microprocessor, the communication module, the 3G/4G module and the clock module;
the first state display module is connected with the microprocessor and is further provided with a power state indicator lamp, and the power state indicator lamp is connected with a power management circuit of the power module.
Preferably, the system further comprises a second state display module connected with the microprocessor, wherein the second state display module is respectively provided with a network state indicator light and a plurality of data transmission state indicator lights, the network state indicator light represents the network connection condition, and the plurality of data transmission state indicator lights respectively represent different data transmission conditions, including data sending, data receiving and data waiting receiving and sending.
The utility model discloses for prior art have following advantage and effect:
(1) the utility model discloses a gateway, including microprocessor, communication module, 3G/4G module and the clock module that is used for encapsulating data, wherein, communication module connects microprocessor and monitoring system's sensor collection appearance to send the data acquisition of sensor collection appearance to microprocessor; the microprocessor logs in a 3G/4G wireless network through the 3G/4G module and is connected with a plurality of data centers, and network time and return data issued by the data centers are obtained through the 3G/4G module; the clock module is connected with the microprocessor and provides acquisition time synchronized with network time for the microprocessor. The utility model discloses the gateway passes through microprocessor and encapsulates into the data that have acquisition time and validity check code with data collection, and data center can learn acquisition time according to data collection and carry out validity detection to data collection, has guaranteed data acquisition's real-time and monitoring system's security, can be exclusively used in monitoring system, is applicable to the monitoring and gathers the type and use the scene. And the gateway realizes interaction with a plurality of data centers through a 3G/4G wireless network, and is favorable for reducing cost and monitoring difficulty compared with the mode that the existing monitoring system acquires acquired data by utilizing a wired network.
(2) The utility model discloses in the gateway, clock module can provide the acquisition time with network time synchronization to microprocessor, and sensor collection appearance can avoid maintaining the clock and carry out complicated time synchronization algorithm, has reduced sensor collection appearance's design complexity greatly.
(3) The utility model discloses in the new gateway, can select the mode of local configuration or remote configuration to set for gateway configuration information according to actual conditions is nimble, realizes the settlement and the gateway restart operation to gateway configuration parameter.
Drawings
Fig. 1 is a block diagram of the gateway of the present invention.
Fig. 2 is a schematic diagram of a process of data transmission and reconnection after the gateway in fig. 1 is connected to a data center.
Fig. 3 is a schematic diagram of the process of gateway initialization in fig. 1.
Fig. 4 is a schematic process diagram of data interaction between the gateway and the sensor collector and the data center in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Examples
The embodiment discloses a gateway applied to a monitoring system, as shown in fig. 1, including: the device comprises a microprocessor for packaging data, a communication module, a 3G/4G module and a clock module.
The communication module is connected with the microprocessor and the sensor acquisition instrument of the monitoring system, and transmits the acquired data of the sensor acquisition instrument to the microprocessor.
The communication module comprises an RS485 interface module, an RS232 interface module and a Bluetooth module, an EMC protection circuit is arranged in the RS485 interface module and the RS232 interface module respectively, and the EMC protection circuit can play a role in isolating current and protecting the internal circuit of the module. The microprocessor can be communicated with the sensor acquisition instrument through an RS485 interface module, an RS232 interface module or a Bluetooth module.
The microprocessor logs in a 3G/4G wireless network through the 3G/4G module and is connected with a plurality of data centers, and network time and return data issued by the data centers are obtained through the 3G/4G module. The data center is a server deployed AT a far end, and can also be application software deployed AT a server end, and the 3G/4G module specifically adopts an AT instruction set to interact with the data center.
In this embodiment, the microprocessor is an ARM serial processor, a Linux operating system or other embedded operating systems is built in, the microprocessor is connected with the RS485 interface module through a UART1 serial port, connected with the RS232 interface module through a UART2 serial port, connected with the bluetooth module through a UART3 serial port, connected with the 3G/4G module through a UART4 serial port, and the UART5 serial port is reserved as a debugging serial port.
The 3G/4G wireless module can adopt a remote EC20 series module or a convergent AIR720 series module, and can only support a module of a single operator or an all-network communication module according to the selection of the operator.
The clock module is connected with the microprocessor, after the 3G/4G module is connected with the 3G/4G wireless network, the microprocessor synchronizes the network time to the clock module through NTP service and synchronizes once every 3600 seconds, so that the clock module keeps consistent with the network time, and acquisition time synchronous with the network time can be provided for the microprocessor.
As shown in table 1, the microprocessor encapsulates the acquired data, the adopted encapsulation format is JSON format, and the encapsulated JSON packet includes sensor ID, acquisition time, acquired data, and validity check code.
TABLE 1
In this embodiment, see the following JSON package (starting with "{" and ending with "}"), the collected data is DS4 cgapdg +48ejnm3 vaizdspsr 71Pn9CPA9uCON84, and the sensor ID is 000102030405060708, which indicates that the collected data corresponding to the sensor ID can be encapsulated and processed into data sent to the data center. The timestamp is 2019-09-01T21:17:52+08:00, represents the current UTC time of the gateway system and is represented in a compact format of ISO8601, the timestamp represents data acquired at 21 o' clock 17 min 52 s of No. 9/1 in 2019, and the data acquisition time of the sensor acquisition instrument can be known by the visible data center through the timestamp, so that the real-time performance of data acquisition is guaranteed. The validity check code is eyjhbgccioijiuzi 1 niaisinr 5cCI6Ik, and validity detection can be performed on the uploaded collected data according to the validity check code in the data center.
{
"sensorid":"000102030405060708",
"time":"2019-09-01T21:17:52+08:00",
"data":"DS4CGaDCdG+48eJNM3VaizDpsR71Pn9CPA9uCON84",
"codr":"eyJhbGciOiJIUzI1NiIsInR5cCI6Ik"
}
The data center issues two types of return data, namely data issued to the sensor acquisition instrument and a control instruction of the gateway. As shown in table 2, when the returned data is a control instruction, the control instruction includes a decision preamble and a JSON packet, where the decision preamble is specifically composed of the first two bytes, the first two bytes respectively represent a protocol version and an FCtrl identifier, and the decision preamble can be used to determine whether the returned data is the control instruction; the JSON packet is gateway configuration information. For example, when the gateway receives return data sent by the data center, if the first two bytes are identified as 0x01 and 0x03, that is, the two bytes are the judgment lead code, the return data can be judged as a control instruction, JSON analysis is performed on subsequent bytes, and the gateway parameter configuration is modified according to the analyzed parameters. If the first two bytes are not 0x01 and 0x03, the returned data is judged to be the data issued to the sensor acquisition instrument, and the whole returned data is directly sent to the sensor acquisition instrument. "3-end" in table 2 indicates that from the third byte start to the end, the contents of the JSON packet are all present.
TABLE 2
In this embodiment, the configuration parameters in the gateway configuration information may be configured locally or remotely. The remote configuration refers to that the data center issues the data to the microprocessor through the 3G/4G module. The local configuration means that the microprocessor is connected with a local upper computer through a communication module, the local upper computer is provided with upper computer software capable of setting configuration parameters, and after the configuration parameters are set by the local upper computer, the microprocessor acquires gateway configuration information sent by the local upper computer through the communication module. In the communication module, the RS485 interface module and the RS232 interface module are specifically connected with a local upper computer through a patch cord, and the Bluetooth module is connected with the local upper computer in a Bluetooth mode.
As shown in table 3, the configuration parameters in the gateway configuration information include: the data center IP/domain name, the port number and the connection mode of each data center, whether to package and collect data, whether to restart, the sensor ID of a sensor connected with a sensor collector, an effectiveness check code, a gateway login packet, a heartbeat packet, the interval time of the heartbeat packet and the baud rate of an interface in a communication module. Wherein the gateway login package can be used for identity confirmation. The interval time of the heartbeat packets is set to be 30-150 s, and the gateway sends the heartbeat packets to the data center at regular intervals according to the interval time of the heartbeat packets so as to maintain the connection with the data center. The baud rate of the interface in the communication module specifically refers to the baud rate of an RS485 or RS232 interface. The data center connection mode can select TCP or UDP transmission. The validity check code, the interval time of the heartbeat packet, the interface baud rate and the content of the gateway login packet can be set by self. The microprocessor can package the collected data according to a self-specified validity check code format, so that the collected data carries the validity check code, and the data center judges whether the validity check code of the collected data is in a preset format, thereby realizing validity detection of the collected data. The gateway can set the gateway and restart according to the gateway configuration information issued by the data center.
TABLE 3
In this embodiment, referring to the following JSON packets (beginning with "{" and ending with "}") and table 3, the number of data centers is 3, and the data centers are respectively a main data center and two backup data centers, the main data center is connected by TCP, the two backup data centers are connected by UDP, the sensor ID is 000102030405060708, the validity check code is eyjhbgccioijiuzi 1 nieisinr 5cCI6Ik, and the heartbeat packet interval time is set to 60 s; the baud rate of the RS232 interface and the baud rate of the RS485 interface are 115200, the IP/domain names of the three data centers are 106.15.46.1, 106.15.46.2 and 106.15.46.3 respectively, the port numbers are 19800, 6060 and 1199 respectively, the setting of pkg to 1 indicates that the microprocessor needs to package the uploaded collected data, and the setting of reboot to 1 indicates that the whole gateway needs to be restarted immediately after the parameters are set.
{"sensorid":"000102030405060708",
"codr":"eyJhbGciOiJIUzI1NiIsInR5cCI6Ik",
"login":"login",
"heartbeat":"heartbeat",
"htime":"60",
"baud":"115200",
"ip0":"106.15.46.1",
"port0":"19800",
"modu0":"TCP",
"ip1":"106.15.46.2",
"port1":"6060",
"modu1":"UDP",
"ip2":"106.15.46.3",
"port2":"1199",
"modu2":"UDP",
"pkg":"1",
"reboot":"1"}
The gateway of the embodiment also comprises a storage module, and the microprocessor is connected with the storage module through the SPI1 interface. The storage module stores gateway configuration information and acquisition data. The storage module can temporarily store the acquired data to be uploaded when the gateway is disconnected with the data center, the number of the temporarily stored acquired data is determined by the residual capacity of the storage and the size of the data packet, and the temporarily stored acquired data can be sent to the data center after the gateway is reconnected with the data center.
The process of data transmission and reconnection after the gateway is connected with each data center can be seen in fig. 2, and the process is as follows:
the microprocessor receives the acquired data through the communication module and encapsulates the acquired data according to the set gateway configuration information;
the microprocessor detects the link state between the microprocessor and the data center, judges whether the connection is successfully established, and sends the encapsulated collected data to the data center through the 3G/4G module under the condition of connection;
storing the acquired data in a storage module under the condition of disconnection, and establishing connection with a data center again;
the microprocessor detects the link state between the data centers again, judges whether the connection is successfully established or not, and continues to reestablish the connection under the condition that the connection is not successfully established; and under the condition of successfully establishing the connection, the collected data is taken out from the storage module and is sent to the data center through the 3G/4G module.
The gateway of the embodiment further comprises a power module and a first status display module and a second status display module,
the power management circuit is connected with the microprocessor, the communication module, the 3G/4G module and the clock module and supplies power to the microprocessor, the communication module, the 3G/4G module and the clock module.
The first state display module is connected with the microprocessor and is further provided with a power state indicator lamp, and the power state indicator lamp is connected with the power management circuit of the power module, so that whether the power module is powered on or not can be judged according to the on-off condition of the power state indicator lamp.
The second state display module is connected with the microprocessor, the network state indicator lamps and the data transmission state indicator lamps are respectively arranged, the network state indicator lamps represent network connection conditions, the data transmission state indicator lamps respectively represent different data transmission conditions, the data transmission conditions comprise data sending, data receiving and data waiting receiving and sending, therefore, whether a 3G/4G wireless network is connected or not can be judged according to the on-off conditions of the network state indicator lamps, and which data transmission condition the data transmission state indicator lamps belong to at present can be judged according to the on-off conditions of the data transmission state indicator lamps.
As shown in fig. 3, after the gateway is powered on and started, the initialization process of the internal microprocessor, the communication module, the 3G/4G module and the clock module is specifically as follows:
the microprocessor initializes and simultaneously initializes the communication module, judges whether parameter initial setting is needed according to an upper computer instruction sent by a local upper computer, enters a parameter setting mode under the condition that the parameter initial setting is needed, sets configuration parameters through the local upper computer, stores the configuration parameters in a storage module after the parameter initial setting is completed, and enters a data interaction mode, and directly enters the data interaction mode under the condition that the parameter initial setting is not needed;
after entering a data interaction mode, the microprocessor reads the received gateway configuration information, initializes the 3G/4G module and the clock module in sequence according to the gateway configuration information, enables the gateway to log in a 3G/4G wireless network and be connected to each set data center, and confirms the identity of the gateway with the data center through a gateway login packet;
after the connection is established, the clock module acquires network time through the 3G/4G module and synchronously acquires the time, so that the initialization is completed.
As shown in fig. 4, after the initialization of the gateway is completed, the process of data interaction between the gateway and the sensor collector and between the gateway and each data center is as follows:
when the acquired data of each sensor acquisition instrument needs to be uploaded, the communication module sends the acquired data of each sensor acquisition instrument to the microprocessor;
the microprocessor judges whether the acquired data needs to be packaged or not according to the gateway configuration information, packages the acquired data under the condition that the data needs to be packaged and sends the packaged acquired data to the 3G/4G module; directly sending the collected data to a 3G/4G module without packaging;
the 3G/4G module sends the acquired data to each data center;
when any data center needs to send the return data, the return data is sent to the 3G/4G module through the 3G/4G network;
the 3G/4G module sends the return data to the microprocessor, and after the microprocessor receives the return data, the microprocessor judges whether the return data is a control instruction according to the first two bytes of the return data:
if the first two bytes are the judgment lead codes, judging that the returned data is a control instruction, then analyzing the JSON object, and changing the configuration parameters of the gateway and/or restarting the gateway according to the analyzed content;
and if the first two bytes are not the judgment lead codes, namely the returned data are not the control instructions, the returned data are sent to the communication module and then sent to the corresponding sensor acquisition instrument.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. A gateway for use in a monitoring system, comprising: a microprocessor for encapsulating data, a communication module, a 3G/4G module and a clock module, wherein,
the communication module is connected with the microprocessor and a sensor acquisition instrument of the monitoring system and sends the acquired data of the sensor acquisition instrument to the microprocessor;
the microprocessor logs in a 3G/4G wireless network through the 3G/4G module and is connected with a plurality of data centers, and network time and return data issued by the data centers are obtained through the 3G/4G module;
the clock module is connected with the microprocessor and provides acquisition time synchronized with network time for the microprocessor.
2. The gateway applied to the monitoring system according to claim 1, wherein the package format adopted by the microprocessor to package the collected data is JSON format, and the packaged JSON packet comprises sensor ID, collection time, collected data and validity check code.
3. The gateway applied to the monitoring system according to claim 1, wherein the data center issues two types of return data, namely data issued to the sensor acquisition instrument and a control instruction of the gateway;
when the returned data is a control instruction, the control instruction comprises a judgment lead code and a JSON packet, wherein the judgment lead code consists of the first two bytes which respectively represent a protocol version and an FCtrl identifier; the JSON packet is gateway configuration information.
4. The gateway applied to the monitoring system according to claim 1, wherein the microprocessor is connected with the local upper computer through the communication module, and acquires the gateway configuration information sent by the local upper computer through the communication module.
5. The gateway applied to the monitoring system according to claim 3 or 4, further comprising a storage module connected with the microprocessor, wherein the storage module stores gateway configuration information and collected data;
the configuration parameters in the gateway configuration information include: the data center IP/domain name, the port number and the connection mode of each data center, whether to package and collect data, whether to restart, the sensor ID of a sensor connected with a sensor collector, an effectiveness check code, a gateway login packet, a heartbeat packet, the interval time of the heartbeat packet and the baud rate of an interface in a communication module.
6. The gateway applied to the monitoring system according to claim 1, wherein the communication module comprises an RS485 interface module, an RS232 interface module and a Bluetooth module, and the microprocessor is communicated with the sensor collector through the RS485 interface module, the RS232 interface module or the Bluetooth module.
7. The gateway of claim 6, wherein the RS485 interface module and the RS232 interface module are respectively provided with an EMC protection circuit.
8. The gateway of claim 1, wherein the 3G/4G wireless module is a module of the remote EC20 series or a module of the close aear 720 series.
9. The gateway applied to the monitoring system according to claim 1, further comprising a power module and a first status display module, wherein a power management circuit and an EMC protection circuit connected with the power management circuit are arranged in the power module, and the power management circuit is connected with the microprocessor, the communication module, the 3G/4G module and the clock module;
the first state display module is connected with the microprocessor and is further provided with a power state indicator lamp, and the power state indicator lamp is connected with a power management circuit of the power module.
10. The gateway applied to the monitoring system according to claim 1, further comprising a second status display module connected to the microprocessor, wherein the second status display module is respectively provided with a network status indicator light and a plurality of data transmission status indicator lights, wherein the network status indicator light indicates a network connection status, and the plurality of data transmission status indicator lights respectively indicate different data transmission statuses, including data transmission, data reception and data waiting for transceiving.
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