CN102497675A - Method for communication between intelligent firefighting upper computer and wireless node - Google Patents

Abstract

The invention relates to a method for communication between an intelligent firefighting upper computer and a wireless node. The traditional communication network between the intelligent firefighting upper computer and the wireless node has various defects, such as complex constructed structure, high cost, low efficiency and the like, along with the increase of the floor number. The method disclosed by the invention is realized by virtue of uploading and issuing data by a base station node so as to realize the communication and control for the upper computer and an entire wireless sensor network, high efficiency of the network and low cost of the node. By applying the method disclosed by the invention and an intelligent firefighting emergency lamp in a coordination manner, the functions, such as fault warning, early warning, real-time state display and the like, of the emergency lamp can be fulfilled when fire disasters and other dangers occur, escapers can be guided to escape from the field safely, and the property and safety of people can be guaranteed to the maximum extent.

Description

A kind of intelligent fire host computer and radio node communication means

Technical field

The invention belongs to communication technical field, particularly a kind of to the host computer of intelligent fire and the communication means between the radio node.

Background technology

Communicating by letter between intelligent fire host computer and the radio node is a kind of guarantee of public place security against fire, is the compulsive measures of public fire protection, and its scope of application is wide, arranges the environment more complicated.At present, along with the increase of number of floor levels, the communication network between host computer and the radio node makes up complex structure, cost is high, efficient is low.

Summary of the invention

The objective of the invention is to deficiency, provide a kind of to intelligent fire host computer and radio node communication means to existing fire communication technology.What use between host computer and the radio node is Routing Protocol, relies on base-station node (Base) to upload and issue data and accomplishes, and this will realize communicating by letter and control of host computer and whole radio sensing network.Host computer is shown to the packet that obtains on the display after handling, and the instruction acquisition with the user simultaneously is issued in the wireless sense network well.

The intelligent fire host computer upgrades net list for timing and offers a timer, with the superseded overtime node of not uploading data of certain cycle, and offers an interruption inlet and detects whether receive that packet perhaps needs transmitting order to lower levels.In order to reduce the fire-fighting node power consumption, send instructions being kept in the specific buffer memory down,, the corresponding node packet again it is handed down to the fire-fighting node when uploading.After host computer receives data, packet is sorted out, distinguished out networking request package and packet.The networking request package is filtered, and finally judging whether needs to upgrade net list, and sends response packet.Packet is filtered equally, and send response packet.The wireless fire-fighting node that needs transmitting order to lower levels is sent reception response packet in advance, order wireless fire-fighting node to prepare to receive the order bag.Concrete steps are following:

Whether step 1. host computer is provided with a TMR3 timer for regularly upgrading net list, finish in order to judge timing: if the timer timing finishes, will upgrade net list to remove overtime free of data node; Otherwise, get into step 2.

Step 2. is interrupted inlet for detecting radio node and whether receiving packet and whether need transmitting order to lower levels bag, host computer to offer one: need the transmitting order to lower levels bag if detect, will testing result be saved in and send buffer memory in the order bag; If testing result is to have received packet, with regard to execution in step 3; If testing result is not receive packet or do not need the transmitting order to lower levels bag, just return step 1.

Step 3. receives after the packet, and type of data packet is judged: if belong to the networking request package, get into step 4; If belong to data, get into step 5.

Step 4. receives after the networking request package, judges in the net list to have or not vacant position: if vacant position is arranged, then send and agree the networking packet and upgrade net list; If there is not vacant position, then send refusal networking packet.

Step 5. receives after the packet of data type, judges whether to network: if do not network, send refusal networking packet; If network, then show and preserve packet and querying command bag buffer memory, get into step 6 then.

Step 6. judges whether this node is sent packet: if do not send packet, then send and successfully receive response packet; If sent packet, then send and receive response packet in advance, and then send the order bag.

The beneficial effect that the relative prior art of the present invention has is: the communication means between host computer and the radio node, and rely on base-station node (Base) to upload and issue data and accomplish, the realization host computer is communicated by letter and control with whole radio sensing network.Realize the low cost of network-efficient property and node.Collocation through the present invention and intelligent fire emergency light is used can be when breaking out of fire etc. be dangerous; Realize the fault alarm of emergency light and the demonstration of functions such as early warning, emergency light real-time status; Guide the survivor to flee the scene safely, to greatest extent support personnel's property safety.

Description of drawings

Fig. 1 is host computer and radio node communication means operating mechanism figure.

Embodiment

Below in conjunction with accompanying drawing and instantiation the present invention is made and to further specify.

The present invention proposes the communication means between a kind of intelligent fire host computer and the radio node.As shown in Figure 1:

Step 1. host computer specially is provided with a TMR3 timer for regularly upgrading net list, does not finish in order to judge timing.If the Timeout of timer surpasses certain threshold value, will upgrade net list and remove overtime free of data node; Otherwise, get into step 2.

To the net list that host computer regularly upgrades, its particular content comprises node address, node R SSI value, Timeout value, shown in table one.Wherein node address is made up of the node ID (low byte) and the node floor number (high byte) that network, the RSSI value of node R SSI value representation network access node, and tabulation will be deleted this nodal information when the Timeout value surpasses certain threshold value.

Table one net list form

Step 2. is interrupted inlet for detecting radio node and whether receiving packet and whether need transmitting order to lower levels bag, host computer specially to offer one.Need the transmitting order to lower levels bag if detect, will testing result be saved in and send buffer memory in the order bag; If testing result is to have received packet, will execution in step 3; If testing result is not receive packet or do not need the transmitting order to lower levels bag, will return step 1.

(2.1) packet that receives to radio node, its concrete form is shown in table two:

Table two packet data zone form

(2.1.1) self floor number is meant which floor the packet that receives belongs to.Agreement between radio node regulation, every layer of name zone that has separately, for example: ground floor has 256 nodes, and self floor number is 1, and node number is 1-255.Attention: have only Base node ability called after 0.

(2.1.2) present invention includes sensing data and report, the node health condition reports, a series of functions such as network control.In order better to use these functions, the present invention's decision is distinguished different packet functions according to type of data packet, and makes different decision-makings according to different data types.

(2.1.3) the node group number is for signal between distinguishing not on the same group disturbs, and can be used for defining different transmission regions in the present invention.

(2.1.4) self node number and destination node number comparatively speaking are meant the node number that sends data, are used for distinguishing the different nodes in the same floor.

(2.1.5) equipment of itself number is in order to distinguish different wireless devices, so that host computer is handled corresponding different data area types, simultaneously different equipment to be made different processing.The device number type is shown in table three:

Table three device number type

The device number style number	The device number types value	Describe
			BASE_DEVICE	0x01	Base station (Base)
MOTE_ DEVICE	0x02	Emergency light node (Mote)
			MEASUR_ DEVICE	0x03	The wireless measurement node

(2.1.6) sequence of data packet number writes down the position of this packet in whole transmission sequence, purpose be in the test link packet loss with give the significant data bag for change.Sequence of data packet number adds up once when packet of every transmission.

(2.1.7) data packet length comprises except that CRC check code, packet header and all data lengths the bag tail.Packet header and bag tail are represented with 0x7E, when using 0x7E in the packet, need escape.The 0x7E escape becomes 0x7D5E, and the 0x7D escape becomes 0x7D5D.

(2.2) to the required order bag that issues of radio node, according to the difference of device type, order packet format that issues and content are with different.

The order packet format of intelligent fire emergency light control is enumerated at this place, and its data area form is shown in following table four:

The data area form of table four order bag

(2.2.1) the data upload time interval: be meant the time cycle of uploading data of emergency light node to the Base node, unit is second (S), and the largest interval time is 65535 seconds, and the minimum interval is 1 second.

(2.2.2) discharge and recharge control: the expression host computer directly charges to the node of emergency light and discharges.Concrete form is shown in following table five:

Table five discharges and recharges the controlled flag position

Discharge and recharge the sign name	Discharge and recharge value of statistical indicant	Describe
			CHANG	0x01	Charging
DISCHANG	0x02	Discharge
			CHANG_TOGGLE	0x03	Discharge and recharge upset

(2.2.3) emergent control: the expression host computer is directly met an urgent need and main electricity condition switching controls to the node of emergency light.Concrete form is shown in following table six:

The emergent control of table six

Emergent controlled flag name	Emergent controlled flag value	Describe
			EMERG_MODE	0X01	Discharge mode
MAINS_MODE	0X02	Main power mode
			MODE _TOGGLE	0X03	The pattern upset

(2.2.4) manually year/monthly test: the expression host computer carries out remote manual year/monthly test to emergent Lantern Festival point and controls.Concrete form is shown in following table seven:

Manually year/monthly test control of table seven

Manual year/monthly test sign name	Manual year/monthly test value of statistical indicant	Describe
			YEAR_CHECK	0X01	Annual test
MONTH_CHECK	0X02	Monthly test
			NO_CHECK	0X03	Do not have and detect

Step 3. receives after the packet, will judge type of data packet.If belong to the networking request package, get into step 4; If belong to data, get into step 5.

To type of data packet, the form of data area is with different in the different data type corresponding data bags, and concrete form is shown in table eight:

Table eight type of data packet

The type of data packet name	The type of data packet value	Describe
			AM_SHEART_MSG	0x01	Heartbeat data packets shows the base operating state
AM_SSENSOR_MSG	0x02	Sensor data packet reports acquisition node
			AM_SHEALTH_MSG	0x03	Healthy bag shows node health status
AM_SCOMMAND_MSG	0x04	The order bag, control wireless network operating state
			AM_SACK_MSG	0x05	Response packet is replied accepting to instruct to make
AM_SOUTE_MSG	0x06	The route bag, Control Network is set up

(3.1) owing to need not to upload any other redundant data, the data area in the heartbeat data packets is empty.And information such as floor number, node number, group number are all relevant with Base node self.

(3.2) owing to the difference of device type, sensing data packet format of uploading and content are with different.The data format that the fire emergency lamp transducer is collected is enumerated at this place, shown in table nine:

Table nine sensor data packet data area form

(3.2.1) cell voltage: the existing magnitude of voltage of expression emergency light internal cell, represent the existing electric weight of battery.

(3.2.2) light source state: the existing state value of expression emergency light light source, concrete form is shown in following table ten:

Table ten light source Status Flag

Light source failure sign name	The light source failure value of statistical indicant	Describe
			LIGHT_FUN	0X01	Light source is normal
LIGHT_SHORT	0X02	The light source short circuit
			LIGHT_OPEN	0X03	The light source open circuit

(3.2.3) battery status: the standing state of expression emergency light internal cell, concrete form is shown in following table 11:

Table ten a battery status flag bit

Battery failures sign name	The battery failures value of statistical indicant	Describe
			BATTERY_FUN	0X01	Battery is normal
BATTERY_SHORT	0X02	Battery short circuit
			BATTERY_OPEN	0X03	The battery open circuit
BATTERY_LOW	0X04	Electric weight is low
			BATTERY_LOW	0X05	Electric weight is low excessively
BATTERY_FULL	0X06	Electric weight is saturated

(3.2.4) city's electricity condition: whether expression 220V power supply situation need get into emergency rating.When line voltage gets into contingency mode during less than 132V, get into main power mode during greater than 186V.Concrete form is shown in following table 12:

Table ten two civil power state flag bits

Civil power Status Flag name	The civil power status flag value	Describe
			MAINS_MODE	0X01	Main power mode
EMERG_MODE	0X02	Contingency mode

(3.2.5) warning: whether the expression emergency light needs to report to the police, and concrete warning reason needs several before of reference data bags.Concrete form is shown in following table 13:

Table ten three warning mark positions

The warning mark name	The warning mark value	Describe
			FUN	0X01	Normally
ALERT	0X02	Report to the police

(3.3) purpose of healthy bag is in order to obtain the health status of all nodes in the network.According to the difference that distinct device requires, host computer can through under send instructions and come the Control Network interior nodes whether to upload healthy bag.The data area form of healthy bag is shown in table ten four.

The data area form of table ten four healthy bags

(3.4) the order bag sees (2.2) for details.

(3.5) response packet mainly is the serial ports instruction that host computer is issued, and slave computer is made this and being replied, comprising receiving the information that whether successfully waits.Its data area form is shown in table ten five:

Table ten five response packet data area forms

The accepting state concrete form is shown in following table 16:

Table ten six accepting state flag bits

Response status sign name	The response status value of statistical indicant	Describe
			SUCCEED_STATE	0X01	Receive successfully
ERROR_STATE	0X02	Take defeat

The fault message concrete form is shown in following table 17:

Table ten seven fault message flag bits

Fault message sign name	The fault message value of statistical indicant	Describe
			NO_MOTE_ERROR	0X01	No node mistake
CRC_ERROR	0X02	The CRC check failure
			OVERSET_ERROR	0X03	Adjusting overruns
NO_ERROR	0X04	Inerrancy

(3.6) the route bag sends the packet that uses when replying instruction mainly as slave computer to host computer application networking or host computer to slave computer.Route bag data area form is shown in table ten eight:

Table ten octuple is by bag data area form

(3.6.1) routing state: represent the effect that this route bag is played, slave computer will be made corresponding reaction to its different state.Particular type is shown in table ten nine:

Table ten nine routing state signs

Routing state sign name	Discharge and recharge value of statistical indicant	Describe
			DATA_ACCEPT	0xE0	Data Receiving is replied
DATA_DENIED	0xEF	Data reject response
			SLAVE_INFO_TABLE_UNFULL	0xF0	Network successfully
SLAVE_INFO_TABLE_FULL	0xFF	Failure networks
			COMMAND_REQ_PACKET	0x13	Instruction issues requirement

(3.6.2) RSSI value: link corresponding quality when the expression node networks, preserve the RSSI value and help evaluating and optimizing of network configuration.

Step 4. receives after the networking request package, judges in the net list to have or not vacant position.If vacant position is arranged, then send and agree the networking packet and upgrade net list; If there is not vacant position, then send refusal networking packet.

Step 5. receives after the packet of data type, judges whether to network.If do not network, send refusal networking packet; If network, then show and preserve packet and querying command bag buffer memory, get into step 6 then.

Step 6. judges whether this node is sent packet.If do not send packet, then send and successfully receive response packet; If sent packet, then send and receive response packet in advance, and then send the order bag.

Claims (1)

1. intelligent fire host computer and radio node communication means rely on base-station node to upload and issue data and accomplish, and realize communicating by letter and control of host computer and whole radio sensing network, it is characterized in that this method specifically may further comprise the steps:

Whether step 1. host computer is provided with a TMR3 timer for regularly upgrading net list, finish in order to judge timing: if the timer timing finishes, will upgrade net list to remove overtime free of data node; Otherwise, get into step 2;

Step 2. is interrupted inlet for detecting radio node and whether receiving packet and whether need transmitting order to lower levels bag, host computer to offer one: need the transmitting order to lower levels bag if detect, will testing result be saved in and send buffer memory in the order bag; If testing result is to have received packet, with regard to execution in step 3; If testing result is not receive packet or do not need the transmitting order to lower levels bag, just return step 1;

Step 3. receives after the packet, and type of data packet is judged: if belong to the networking request package, get into step 4; If belong to data, get into step 5;

Step 4. receives after the networking request package, judges in the net list to have or not vacant position: if vacant position is arranged, then send and agree the networking packet and upgrade net list; If there is not vacant position, then send refusal networking packet;

Step 5. receives after the packet of data type, judges whether to network: if do not network, send refusal networking packet; If network, then show and preserve packet and querying command bag buffer memory, get into step 6 then;

Step 6. judges whether this node is sent packet: if do not send packet, then send and successfully receive response packet; If sent packet, then send and receive response packet in advance, and then send the order bag.

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