CN115311801A

CN115311801A - Coding method for fire-fighting two-bus equipment and infrared combination

Info

Publication number: CN115311801A
Application number: CN202210964264.3A
Authority: CN
Inventors: 韩任隆; 刘金梁; 王洪德; 郎嵩; 董日强; 王峰
Original assignee: Yingkou Tiancheng Fire Equipment Co ltd
Current assignee: Yingkou Tiancheng Fire Equipment Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-11-08
Anticipated expiration: 2042-08-12
Also published as: CN115311801B

Abstract

The invention provides a coding method of a fire-fighting dual-bus device and an infrared combination, which realizes address coding between a fire alarm host and a loop device node in a way of matching an infrared electronic encoder and a loop dual-bus, and comprises the following specific steps: the fire control host is cascaded with the loop equipment through two buses to form closed loop circulation; after the system is powered on and operated, the fire alarm host sends an address coding command; after receiving an address coding command of a loop bus, loop equipment enters an address coding inspection mode; in the address coding and routing inspection process, firstly, routing inspection is carried out on the flag bit XX to determine the group number XX, and then routing inspection is carried out on the group number XX in the corresponding flag bit XX to determine the number of the group number XX; the hand-held infrared electronic encoder performs address coding operation on corresponding loop equipment; after the loop equipment analyzes correct infrared address information sent by the infrared electronic encoder, an address number is uploaded to a second loop bus; and the second loop bus reports the reported address number to the host and displays the address number in real time. In the invention, the loop equipment adopts a grouping mode, and can realize that more coded addresses are reported quickly under the condition of few code return bits.

Description

Coding method for fire-fighting two-bus equipment and infrared combination

Technical Field

The invention relates to a coding method of a fire-fighting two-bus device and an infrared combination, and belongs to the technical field of coding of fire alarm devices.

Background

The two-bus technical line is a technology that a power supply line and a signal line are combined into one, and signals and power supply share one bus. Because the two buses greatly save the construction and cable cost, and bring great convenience to site construction and later maintenance, the two buses are widely applied to the fields of fire fighting, instruments, sensors, industrial control and the like. Typical two BUS technologies include M-BUS, fire BUS, etc.

At present, the automatic fire alarm system gradually adopts two buses to connect a fire alarm controller and detection components, and each detection component needs to have a unique address code for distinguishing so that the fire alarm controller can inspect.

However, in the conventional automatic fire alarm system, when an address is set for loop equipment, the address needs to be coded first and then installed, and when the address is set, cyclic inspection between addresses of 1 to 255 (maximum) is needed each time, when the quantity of engineering is large, thousands of equipment are provided, and time and labor are consumed for coding components; after the addresses of the loop devices are set, if the same addresses of the loop devices are found in operation, namely the situation of recoding, the corresponding loop devices need to be disassembled, the addresses are coded again through the coder, and the loop devices still need to be circularly checked among addresses of 1-255 (maximum) during address coding.

Disclosure of Invention

The invention provides a coding method combining two bus equipment and infrared for fire fighting.

The invention is implemented by the following technical scheme: a coding method of fire-fighting dual-bus equipment and infrared combination is characterized in that address coding is realized between a fire alarm host and a loop equipment node in a mode of matching an infrared electronic encoder and a loop dual-bus, and the method comprises the following specific steps:

(1) The fire control host is cascaded with the loop equipment through two buses to form closed loop circulation; the loop equipment sets an encoding format in a grouping mode, and the encoding format of the answer code is as follows: a flag bit XX-group number XX;

(2) After the system is powered on and operated, sending an address coding command through a fire alarm host; (ii) a

(3) After receiving an address coding command of a loop bus, loop equipment enters an address coding inspection mode; in the address coding and routing inspection process, firstly, routing inspection is carried out on the flag bit XX to determine the group number XX, and then routing inspection is carried out on the group number XX in the corresponding flag bit XX to determine the number of the group number XX;

(4) The hand-held infrared electronic encoder performs address coding operation on corresponding loop equipment;

(5) After the loop equipment analyzes correct infrared address information sent by the infrared electronic encoder, an address number is uploaded to a second loop bus;

(6) And the second loop bus reports the reported address number to the host and displays the address number in real time.

Preferably, in the case of low power bus devices, the loop coding sequence is as follows: the method comprises the steps that a starting code (2 bit) + a command code (nbit) + an address code (nbit) + a delay + an answer code (nbit) + synchronization time, and correspondingly, the coding format of the answer code adopts a zone bit (n-1), a group number bit (n-2) -bit 0.

Preferably, in the case of a high bus device power, the loop coding sequence is as follows: the code format of the answer code correspondingly adopts a flag bit answer code 1 (highest bit) and a group number (answer code total number-1).

The invention has the beneficial effects that:

1. in the invention, the loop equipment adopts a grouping mode, and in the process of routing inspection, the flag bit XX is firstly inspected to determine that the loop equipment is in a plurality of groups, and then the group number XX in the corresponding flag bit XX is inspected to determine which number the loop equipment is in the group, so that more coded addresses can be quickly reported under the condition of few return bits, and the routing inspection is not required to be carried out circularly between 1-maximum number addresses each time, thereby greatly saving the routing inspection time; in addition, the coding sequence of the loop is divided into two modes according to the bus power, wherein the first mode is suitable for the condition that the bus equipment power is small, one-time sampling can be realized to complete the answer, and the speed is high; the second mode is suitable for the condition of high power of the bus equipment, the answer can still be quickly completed through scattered answer and combined calculation, and if the first mode is used under the condition of high power of the bus equipment, the condition of power failure of the equipment can occur during code returning, so that the coding efficiency is influenced.

2. By adopting the invention, the loop equipment can be installed firstly, and the traditional mode can be compatible with address coding firstly, in a word, the addressing scheme can be adjusted in real time according to the field condition; if the loop equipment is installed, the address can be easily modified without disassembly by adopting the invention.

3. When setting the address of the loop equipment, the invention needs to calculate the corresponding relation between the binary number and the decimal number, but because of the grouping setting, the calculation amount of each group is very small, the error is not easy to occur, even if the duplication code phenomenon occurs when setting the address of the loop equipment, the duplication code is relatively easy, rapid and accurate to search.

4. In the invention, loop equipment is designed into a grouping mode, the more the address bits of the echo bits are, the larger the realized address range is, the multiple increase of 2 is presented when one bit is added, for example, 4064 addresses can be easily realized by 8 bits of the echo bits, 127 groups can be divided by 7 bits, and each group of 4064/127=32 bus equipment.

Drawings

Fig. 1 is a timing diagram of the encoding of a reply code in the case of a low bus device power.

Fig. 2 is a timing diagram of the encoding of the reply code in the case of a high bus device power.

Fig. 3 is a timing diagram of the encoding of the reply code (60 addresses, the reply code being 5 bits) during a round robin process according to an embodiment of the present invention.

Fig. 4 is a timing diagram of the encoding with flag bit 1 being answered according to an embodiment of the present invention.

Fig. 5 is a timing diagram of the encoding of group number 1 with a reply according to an embodiment of the present invention.

Fig. 6 is a timing diagram of the encoding of the reply code (4064 addresses, 8 bits for the reply code) in the second round-robin process according to the embodiment of the present invention.

Detailed Description

Example one

This embodiment takes 60 addresses and 5 bits of the answer code as an example for explanation.

Five bits of the answer code are high- > low, bit 4-zone bit, bit 3-0 group number, 60 addresses are divided into 15 groups (bit 3-0 is 4 bits, the maximum value is 15), each group has 4 devices (60/15 = 4), when the zone bit is '1', the group number is reported, and when the zone bit is '0', the normal response of the address is reported.

Taking address 1 as an example to explain:

the first step is as follows: the loop device receives the address command of the loop bus, and enters an address polling mode, as shown in fig. 3.

The second step is that: the encoder performs an infrared addressing operation.

The third step: after the loop equipment resolves correct infrared address information, the address number is uploaded, two steps are carried out, the application group number (shown in figure 4) is sent in the first step, the routing inspection address group (shown in figure 5) is adjusted by the loop board according to the group number, and the correct address response is returned in the second step, so that address coding and reporting are completed.

The fourth step: the loop reports the reported address number to the host again for real-time display.

As can be seen from fig. 4, for the 1-group application, the coded address range bits 1~4 (4 addresses per group) can be calculated, but it cannot be determined which address is, and all of the following rounds of 1~4 address see which address has the answer signal, i.e., which address is proved. The patrol inspection No. 1 address has an answer signal, which indicates that the addressing of the No. 1 address is successful, and the patrol inspection 2~4 is not needed, and the No. 1 address is reported to the host for display.

Example two

This embodiment is illustrated with 4064 addresses and 8 bits of the reply code, as shown in fig. 6.

Five bits of the answer code are high- > low, bit 7-flag bit, bit 6-0 group number, 4064 address groups 127 (bit 6-0 is 7 bits, maximum value is 127), each group has 32 bus devices (4064/127 = 32), when the flag bit is "1", it indicates that the group number is reported, and when the flag bit is "0", it indicates that the normal response of the address is reported. It can be seen that 4064 addresses can be easily implemented by 8 bits of the answer code.

The address coding process is the same as that of the first embodiment, and is not described herein again.

Claims

1. A coding method of a fire-fighting two-bus device and an infrared combination is characterized in that: and the fire alarm host and the loop equipment node realize address coding in a mode of matching an infrared electronic encoder with a loop two-bus.

2. A fire fighting two-bus device and infrared combined coding method as defined in claim 1, characterized by the concrete steps of:

(1) The fire control host is cascaded with the loop equipment through two buses to form closed loop circulation; the loop device sets the coding format in a grouping mode, and the coding format of the answer code is as follows: flag bit XX-group number XX;

(2) After the system is powered on and operated, sending an address coding command through a fire alarm host;

(6) And the loop two bus reports the reported address number to the host again for real-time display.

3. A fire fighting two-bus device and infrared combined coding method as defined in claim 1, wherein: in the case of low power bus devices, the loop coding sequence is as follows: the method comprises the steps that a starting code (2 bit) + a command code (nbit) + an address code (nbit) + a delay + an answer code (nbit) + synchronization time, and correspondingly, the coding format of the answer code adopts a zone bit (n-1), a group number bit (n-2) -bit 0.

4. A fire fighting two-bus device and infrared combined coding method as defined in claim 1, wherein: when the power of the bus device is large, the loop coding sequence is as follows: the code format of the answer code correspondingly adopts a flag bit answer code 1 (highest bit) and a group number (answer code total number-1).