CN212460744U - Fire alarm detector convenient to encode and maintain - Google Patents
Fire alarm detector convenient to encode and maintain Download PDFInfo
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- CN212460744U CN212460744U CN202020734250.9U CN202020734250U CN212460744U CN 212460744 U CN212460744 U CN 212460744U CN 202020734250 U CN202020734250 U CN 202020734250U CN 212460744 U CN212460744 U CN 212460744U
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Abstract
The utility model discloses a fire alarm detector convenient for coding and maintenance, which comprises a detector base and a detector body, wherein the detector body is detachably connected with the detector base; the detector base is provided with an encoder, the encoder comprises a transmitting circuit, and the detector body is provided with a receiving circuit; when the detector body is arranged on the detector base, the receiving circuit is connected with the transmitting circuit, and the number set by the encoder can be read by the detector body through the connection of the receiving circuit and the transmitting circuit. The utility model adopts the infrared transmitting and receiving tube with mature technology, utilizes the serial communication coding mode to transmit signals, and places the coding element on the general detector base which does not need to be replaced, so that the fire detector does not need to be numbered when being maintained or replaced, only needs to install a new fire detector on the base, and the system still carries out numbering identification according to the original detector number; the coding circuit has small size, low power consumption, low cost and easy installation and debugging.
Description
Technical Field
The utility model relates to a fire alarm monitoring alarm technical field, especially a fire alarm detector convenient to encode and maintain.
Background
Since the 2005 national promulgated fire protection laws, our country increasingly attaches importance to reducing the loss of lives and properties of people caused by fire, and the demand for fire alarm systems has increased. The fire alarm system must contain a detection end for identifying fire, usually adopts a fire detector to realize fire detection, and the most commonly applied fire alarm detectors which are convenient for coding and maintenance at present are point type smoke detectors and point type temperature detectors, and have the characteristics of high detection sensitivity, low rate of missing report, small volume, easy installation, low cost and the like. In addition, in a fire alarm system, a plurality of fire detectors are generally included in a distributed manner, and in order to enable a host to identify a fire alarm location, the fire detectors must have unique numbers. In the existing fire alarm system, a fire detector is generally connected with a host machine in a two-wire system or two-bus mode, and in the application scenes of industry or trains and the like, the fire detector is also connected with the host machine in a bus mode such as RS485 or CANBUS and the like.
Two-wire system requires that every detector has two wires to be connected with the host computer and carries out the communication, and its advantage lies in every fire detector and host computer port one-to-one, and consequently fire detector's serial number also is fixed unchangeable, need not consider fire detector's serial number problem when changing new fire detector, promptly the fire detector in case connected the port that the host computer is fixed, no matter change fire detector's base or body so, all influence fire detector's serial number. This approach is less problematic with fewer detectors, but field wiring becomes more difficult when the number of detectors in the system is large, and the use of too many wires can be more costly to the user.
The biggest advantage of the two-bus connection mode is that fire detectors in one detection area can be hung on one bus, and 256 fire detectors can be connected to one detection area. The fire detector in the area can be connected with the host machine only by arranging a pair of communication lines on site by adopting a two-bus mode, thereby greatly reducing the material cost and wiring man-hour and greatly saving the construction time and cost for installation companies and users.
All detectors can be hung on one bus in an RS485 or CANBUS bus mode, one detection area can be connected with 256 fire detectors, and the two wiring modes have two more power lines compared with a two-bus mode, but the transmission rate is high, and the amount of transmitted information is large.
No matter the two-bus connection mode or the bus modes such as RS485 and CANBUS are collectively called as the bus mode, except that the RS485 or CANBUS adopts a hand-in-hand (token ring) wiring mode with higher cost, the fire detectors cannot be automatically numbered, each fire detector needs to be manually numbered before being used, once the fire detectors are duplicated, the troubleshooting is difficult, and particularly, most of the fire detectors are arranged on a roof and a shielding part, so that the troubleshooting difficulty is further increased. The existing numbering and coding method of the fire detector in a bus connection mode mainly adopts the modes of dial switches, wireless remote control, special addressing devices for addressing, card insertion and the like, but basically operates on a fire detector body, when the fire detector is maintained or replaced, a new detector needs to be addressed, and once the addressing is wrong, the whole system cannot work normally.
Disclosure of Invention
The utility model discloses to above-mentioned bus fire detector's addressing problem provides a fire alarm detector convenient to code and maintain. The technical scheme of the utility model is that:
a fire alarm detector convenient for coding and maintenance comprises a detector base and a detector body, wherein the detector body is detachably connected with the detector base; the detector base is provided with an encoder, the encoder comprises a transmitting circuit, and the detector body is provided with a receiving circuit; when the detector body is installed on the detector base, the receiving circuit is connected with the transmitting circuit, and the number set by the encoder can be read by the detector body through the connection of the receiving circuit and the transmitting circuit.
As the utility model discloses preferred technical scheme, transmitting circuit is wireless infrared transmitting circuit, receiving circuit is wireless infrared receiving circuit.
Furthermore, the wireless infrared transmitting circuit comprises a transmitting tube, the wireless infrared receiving circuit comprises a receiving tube, and when the detector base is installed and connected with the detector body, the transmitting tube and the receiving tube are arranged in an aligning mode.
Furthermore, the transmitting circuit comprises a dial switch, an MCU module and a transmitting tube, wherein the serial number of the encoder is set by the dial switch, processed and converted by the MCU module, and transmitted to the receiving circuit by the transmitting tube.
Furthermore, the wavelength characteristics of the transmitting tube and the receiving tube are the same, and the infrared wavelength is 760nm-1100 nm.
Furthermore, be equipped with mainboard power buckle and encoder power buckle on the detector base, the power passes through mainboard power buckle gives the detector mainboard power supply of detector body in, gives through encoder power buckle the encoder power supply.
Furthermore, the buckle included angle of the main board power buckle is different from the buckle included angle of the encoder power buckle.
Furthermore, the main board power supply buckle is a non-polar power supply buckle, and the positive pole and the negative pole are not distinguished.
Furthermore, the power on and off of the encoder power supply buckle are controlled by the detector main board.
Further, the dial switch is an 8-bit dial switch, and 255 addressing operations can be performed in a binary manner.
The utility model has the advantages that:
the utility model adopts the infrared transmitting and receiving tube with mature technology, utilizes the serial communication coding mode to transmit signals, and places the coding element on the general detector base which does not need to be replaced, so that the fire detector does not need to be numbered when being maintained or replaced, only needs to install a new fire detector on the base, and the system still carries out numbering identification according to the original detector number; the infrared transmitting and receiving mode is adopted, the coding device is installed on the fire detector base, the coding circuit is small in size, low in power consumption and low in cost, and installation and debugging are easy. The specific advantages can be summarized as the following points:
1. the difficult problem that a new detector needs to be recoded when the fire detector is newly installed or replaced in the prior art is thoroughly solved;
2. the detector base and the detector body do not need to be connected with a lead or carry out accurate mechanical alignment pushing coding;
3. the encoder is fixed on the detector base, so that the duplication condition of the field-mounted detector is greatly reduced;
4. the detector is dismounted without any abrasion to the encoder;
5. the base and the body are accurately aligned without depending on accurate machining, normal communication can be realized, the serial number of the detector can be correctly obtained, and the reliability of the code of the detector in a vibration environment is greatly improved;
6. the infrared wireless transmission and reception are adopted, so that the system is insensitive to ambient light such as natural light and lamplight and has strong anti-interference capability;
7. the pure electronic circuit has low processing and production cost;
8. the encoder is installed in a buckling mode, and maintenance is simple and convenient;
9. the material consumption is avoided, and the punching and code-dialing sheet is not needed, so that the situations that the code-dialing sheet is wrongly installed or a hole is wrongly punched on the code-dialing sheet to cause coding errors and loss of the code-dialing sheet in the field installation process do not exist;
10. the device can be applied to smoke detectors, temperature-sensing detectors, smoke temperature composite detectors, temperature-sensing cable modules, audible and visual alarms, manual alarm buttons and other module codes needing to be hung on buses in various bus communication modes such as two buses, RS485, CANBUS and the like.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a fire alarm detector for easy coding and maintenance according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the infrared communication between the transmitting circuit and the receiving circuit according to the embodiment of the present invention;
fig. 3 is a schematic diagram of binary setting of a dial switch according to an embodiment of the present invention;
fig. 4 is a setting diagram of the mainboard power supply buckle and the encoder power supply buckle on the detector base according to the embodiment of the present invention.
Reference numerals: detector base 1, mainboard power buckle 11, encoder power buckle 12, detector body 2, detector mainboard 21, encoder 3, dial switch 31, transmitting tube 32, receiver tube 4.
Detailed Description
Example (b):
the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely illustrative of some, but not all embodiments of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to the attached figure 1, the fire alarm detector convenient to encode and maintain comprises a detector base 1 and a detector body 2, wherein the detector body 2 is detachably connected with the detector base 1; the detector base 1 is provided with an encoder 3, the encoder 3 comprises a transmitting circuit, and the detector body 2 is provided with a receiving circuit; when the detector body 2 is installed on the detector base 1, the receiving circuit is connected with the transmitting circuit, and the detector body 2 can read the serial number set by the encoder 3 through the connection of the receiving circuit and the transmitting circuit. The fire alarm detector convenient for coding and maintenance is suitable for fire alarm systems of bus communication modes such as two buses, RS485, CANBUS and the like, the number addressed by each encoder 3 is set to be the unique number in the fire alarm system when the detector body 2 is installed on the detector base 1, the detector body 2 is connected with the encoder 3 arranged on the detector base 1 and reads the addressed number as the number of the fire alarm detector convenient for coding and maintenance in the fire alarm system, and the uniqueness of the detector number in the corresponding system is ensured. In the subsequent maintenance and updating, only the detector body 2 is generally updated, the newly-accessed detector body 2 is communicated with and reads the addressing of the encoder 3 on the corresponding detector base 1 as a serial number, and the addressing of the encoder 3 is not changed, so that the newly-accessed detector body 2 can be accessed into the fire alarm system by the original unique serial number, the encoding operation is not needed, the uniqueness of the serial number of the fire alarm detector which is convenient to encode and maintain after maintenance can be ensured, the maintenance work is reduced, and the correctness of the serial number is ensured.
As an embodiment of the present invention, the transmitting circuit and the receiving circuit are connected in a wireless infrared communication manner, in one embodiment, the transmitting circuit includes a dial switch 31, an MCU module and a transmitting tube 32, and the receiving circuit includes a receiving tube 4. When the detector is used, the number of the encoder 3 is set through the dial switch 31, the MCU module processes and converts the number and sends the converted number to the detector body 2 through the transmitting tube 32, and the detector body 2 receives the number through the receiving tube 4 and then uses the number as the unique number in the fire alarm system to execute normal monitoring operation. In this embodiment, the dial switches 31 are set by manual dial, referring to fig. 3, and 255 addressing operations can be performed by selecting the 8-bit dial switch 31, so as to meet the requirement of the maximum number of loop devices of the fire alarm system. In practice, the dial setting may be in a binary manner, such as 00000010 ("0" indicating that the switch is placed in the "off" position, "1" indicating that the switch is placed in the "on" position) indicating that the detector is coded as a # 2 detector, and so on.
In this embodiment, the transmitting tube 32 and the receiving tube 4 for infrared communication have the same wavelength characteristics and are paired, and the infrared wavelength of the transmitting tube and the receiving tube is 760nm to 1100 nm. Referring to fig. 1, in order to better transmit communications, the transmitting tube 32 and the receiving tube 4 are arranged in an aligned manner, after the detector base 1 and the detector body 2 are fixedly mounted and connected, the transmitting tube 32 is located on the upper end face of the detector base 1, and the receiving tube 4 is located on the lower end face of the detector body 2, and the positions of the transmitting tube 32 and the receiving tube are opposite to each other, so that the receiving tube 4 can receive a maximum signal, the anti-interference capability is improved, and the correctness of numbering is ensured.
As a mode of this embodiment, a main board power supply buckle 11 and an encoder 3 power supply buckle 12 are arranged on the detector base 1, an external power supply supplies power to a detector main board 21 in the detector body 2 through the main board power supply buckle 11 with no polarity, and the detector main board 21 supplies power to the encoder 3 on the base through the encoder 3 power supply buckle 12. In this embodiment, mainboard power buckle 11 and 3 power buckle 12 of encoder adopt mistake proofing structural design, refer to fig. 4, contained angle between two buckles of 3 power buckle 12 of encoder is A, contained angle between 11 two buckles of mainboard power buckle is B, and contained angle A's angle is less than contained angle B to detector body 2 can correctly install on detector base 1 when guaranteeing the installation, only detector body 2 correctly installs the back with detector base 1 correctly, and detector mainboard 21 just can the work of getting electricity, and through the normal back of detector mainboard 21 self-checking work, just is supplied power to encoder 3 by detector mainboard 21, further guarantees encoder 3's safety, can not appear the problem that external power source misconnected to on encoder 3.
As a preferable scheme, the electrical interruption of the power supply buckle 12 of the encoder 3 is controlled by the detector main board 21, and after the detector main board 21 correctly reads the code of the encoder 3, the detector main board 21 disconnects the power supply of the encoder 3, so that the power consumption of the whole system is reduced and the safety of the encoder 3 is ensured.
When the fire alarm detector convenient for coding and maintenance of the embodiment is installed for the first time, the dial switch 31 on the detector base 1 is set as the appointed code according to the construction drawing, the detector mainboard 21 is electrified and is in the stable working state after the detector is correctly installed, the power supply buckle 12 of the encoder 3 is switched on, the encoder 3 is powered on and enters a working state, the MCU module reads the number set by the dial switch 31, and sends the serial number to the receiving tube 4 through the transmitting tube 32 according to the specified communication protocol at the set time interval, after the main board 21 of the detector receives the sent signal through the receiving tube 4, demodulating and storing the coded data to the detector mainboard 21 through a serial port, turning off the power supply of the encoder 3 after verifying the correctness, enabling the encoder 3 to be in a non-working state, and then working by taking the received code as the unique number of the encoder in the fire alarm system. Because the number is determined by the dial switch 31 on the detector base 1, even if a new detector body 2 is replaced, the detector number at the position cannot be changed, and the detector mainboard 21 can read the number set by the encoder 3 in the way every time the detector body 2 is electrified, so that the uniqueness of the fire alarm detector code which is convenient to encode and maintain is ensured.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof allows for variations, and in short, all variations within the scope of the independent claims of the present invention are within the scope of the present invention.
Claims (10)
1. A fire alarm detector convenient to encode and maintain which characterized in that: the detector comprises a detector base and a detector body, wherein the detector body is detachably connected with the detector base; the detector base is provided with an encoder, the encoder comprises a transmitting circuit, and the detector body is provided with a receiving circuit; when the detector body is installed on the detector base, the receiving circuit is connected with the transmitting circuit, and the number set by the encoder can be read by the detector body through the connection of the receiving circuit and the transmitting circuit.
2. A fire alarm detector facilitating coding and maintenance according to claim 1, wherein: the transmitting circuit is a wireless infrared transmitting circuit, and the receiving circuit is a wireless infrared receiving circuit.
3. A fire alarm detector facilitating coding and maintenance according to claim 2, wherein: the wireless infrared transmitting circuit comprises a transmitting tube, the wireless infrared receiving circuit comprises a receiving tube, and when the detector base is connected with the detector body in an installing mode, the transmitting tube is aligned with the receiving tube.
4. A fire alarm detector facilitating coding and maintenance according to any one of claims 1-3, wherein: the transmitting circuit comprises a dial switch, an MCU module and a transmitting tube, wherein the serial number of the encoder is set by the dial switch, and is processed and converted by the MCU module and transmitted to the receiving circuit by the transmitting tube.
5. A fire alarm detector facilitating coding and maintenance according to claim 4, wherein: the wavelength characteristics of the transmitting tube and the receiving tube are the same, and the infrared wavelength is 760nm-1100 nm.
6. A fire alarm detector facilitating coding and maintenance according to claim 4, wherein: be equipped with mainboard power buckle and encoder power buckle on the detector base, the power passes through mainboard power buckle gives the detector mainboard power supply of detector body, gives through encoder power buckle the encoder power supply.
7. A fire alarm detector facilitating coding and maintenance according to claim 6, wherein: the buckle included angle of mainboard power buckle is inequality with the buckle included angle of encoder power buckle.
8. A fire alarm detector facilitating coding and maintenance according to claim 6, wherein: the mainboard power supply buckle is a non-polar power supply buckle.
9. A fire alarm detector facilitating coding and maintenance according to claim 6, wherein: the electricity of encoder power buckle is switched on or off by the control of detector mainboard.
10. A fire alarm detector facilitating coding and maintenance according to claim 4, wherein: the dial switch is an 8-bit dial switch, and 255 pieces of addressing can be carried out in a binary mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734250.9U CN212460744U (en) | 2020-05-07 | 2020-05-07 | Fire alarm detector convenient to encode and maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734250.9U CN212460744U (en) | 2020-05-07 | 2020-05-07 | Fire alarm detector convenient to encode and maintain |
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| Publication Number | Publication Date |
|---|---|
| CN212460744U true CN212460744U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020734250.9U Active CN212460744U (en) | 2020-05-07 | 2020-05-07 | Fire alarm detector convenient to encode and maintain |
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| CN (1) | CN212460744U (en) |
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- 2020-05-07 CN CN202020734250.9U patent/CN212460744U/en active Active
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