CN213904104U - Multi-trigger-point signal transmission device - Google Patents
Multi-trigger-point signal transmission device Download PDFInfo
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- CN213904104U CN213904104U CN202023102954.3U CN202023102954U CN213904104U CN 213904104 U CN213904104 U CN 213904104U CN 202023102954 U CN202023102954 U CN 202023102954U CN 213904104 U CN213904104 U CN 213904104U
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 230000001960 triggered effect Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a many trigger point signal transmission device, including configurable trigger point module and MCU control module, configurable trigger point module includes chip U2, resistance R23, zener diode D12, electric capacity C20, resistance R24 and trigger circuit, chip U2's output is connected with resistance R23's one end, resistance R23's the other end, electric capacity C20's one end and zener diode D12's negative pole all are connected with resistance R24's one end, resistance R24's the other end is connected with MCU control module, chip U2 has at least one input to pass through trigger circuit and is connected with the external trigger host computer. The utility model discloses in, through the break-make of MCU control module control chip U2's input and output, and then order about chip U2's output and loop through resistance R23 and resistance R24 and send the voltage that the trigger circuit gathered to the MCU control module to make MCU control module judge the operating condition of outside trigger host computer according to the voltage of gathering.
Description
Technical Field
The utility model relates to a changer technical field especially relates to a many trigger points signal transmission device.
Background
In the existing fire protection system, most external triggers gradually use a dry contact form to trigger alarm, but in practical situations, the problems that a line of a background server/controller connected to an external trigger host is too long, and line faults such as open circuit and short circuit easily occur in the line in the process result in the fact that the background server/controller cannot accurately judge the current working state of the external trigger host, and meanwhile, the connection form between the background server/controller and the external trigger host is single, so that the situation that part of the external trigger hosts (for example, the external trigger hosts provided with active contacts) can not be normally connected with the background server/controller can not be ensured.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a multi-trigger-point signal transmission device, which can solve the problem that the circuit overlong between a background server/controller and an external trigger host causes the circuit to easily cause the circuit faults such as open circuit and short circuit, and the connection form of the background server/controller and the external trigger host is single.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a many trigger points signal transmission device, is including the MCU control module that is used for acquireing the configurable trigger point module of the signal that the external trigger host computer sent and is used for judging the operating condition of external trigger host computer, the configurable trigger point module includes chip U2, resistance R23, zener diode D12, electric capacity C20, resistance R24 and trigger circuit, the output and the one end of resistance R23 of chip U2 are connected, the other end of resistance R23, the one end of electric capacity C20 and the negative pole of zener diode D12 all are connected with the one end of resistance R24, the other end and the AD end of MCU control module of resistance R24 are connected, the output of MCU control module is connected with the selection input of chip U2, chip U2 has at least one input to pass through trigger circuit and is connected with the external trigger host computer.
Preferably, the trigger circuit comprises a resistor R, a capacitor C, an inductor L, a resistor R, a bidirectional TVS tube D, a zener diode D and a fuse F, wherein one end of the resistor R, one end of the capacitor C and one end of the inductor L are all connected with the input end X of the chip U, the other end of the inductor L, one end of the capacitor C and one end of the inductor C are all connected with one end of the resistor R, the other end of the resistor R, one end of the capacitor C, one end of the resistor R, one end of the bidirectional TVS tube D and the negative electrode of the zener diode D are all connected with one end of the resistor R, the other end of the resistor R is connected with one end of an external trigger host through the fuse F, and the other end of the capacitor C, the other end of the bidirectional TVS tube D, the other end of the capacitor R, the input end of the fuse F, and the input end of the chip U, The other end of the voltage stabilizing diode D7 and the other end of the external trigger host are both grounded.
Preferably, the circuit further comprises a resistor R1 and a resistor R2, the other end of the resistor R14 is connected with one end of the resistor R1 through a fuse F1, the other end of the resistor R1 and one end of the resistor R2 are both connected with one end of an external trigger host, and the other end of the resistor R2 is grounded.
Preferably, the external trigger main unit is provided with an active contact, the other end of the resistor R14 is connected with one end of the active contact of the external trigger main unit through a fuse F1, and the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, the other end of the capacitor C14, the other end of the bidirectional TVS tube D6, the other end of the zener diode D7 and the other end of the active contact of the external trigger main unit are grounded.
Compared with the prior art, the beneficial effects of the utility model reside in that: the trigger circuit is connected with the external trigger host, so that the trigger circuit inputs a corresponding signal to the chip U2 according to the current working state of the external trigger host, and then the chip U2 outputs a signal corresponding to the current working state of the external trigger host to the MCU control module, so that the MCU control module can judge the current state of the external trigger host according to the acquired signal.
Drawings
Fig. 1 is a circuit diagram of a configurable trigger point module according to the present invention.
Fig. 2 is a circuit diagram of a dry contact mode trigger circuit with line detection according to the present invention.
Fig. 3 is a circuit diagram of the MCU module according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-3, a multi-trigger-point signal transmission apparatus includes a configurable trigger point module for acquiring a signal sent by an external trigger host and an MCU control module for determining an operating state of the external trigger host, where the configurable trigger point module includes a chip U2, a resistor R23, a zener diode D12, a capacitor C20, a resistor R24, and a trigger circuit, an output end of the chip U2 is connected to one end of a resistor R23, another end of the resistor R23, one end of the capacitor C20, and a negative electrode of the zener diode D12 are all connected to one end of the resistor R24, another end of the resistor R24 is connected to the MCU control module, and at least one input end of the chip U2 is connected to the external trigger host through the trigger circuit. In this embodiment, the model of the chip U2 is HEF4051BT, the MCU control module is a single chip microcomputer of the model M487 size, and the output end of the MCU control module is connected to the selection input end of the chip U2, so as to realize the connection relationship between the output end and the input end of the MCU control module control chip U2, so that the analog-to-digital conversion acquisition end of the CU control module obtains the voltage acquired by the trigger circuit through the resistors R24 and R23.
Specifically, the MCU control module is connected to the selection input terminal of the chip U2, and further controls the operating status of the configurable trigger point module, where the operating status includes: the dry contact mode, the dry contact mode with line detection and the 24V active contact mode, in particular, when the chip U2 is in the dry contact mode, the trigger circuit comprises a resistor R15, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, an inductor L1, a resistor R13, a resistor R12, a resistor R14, a bidirectional TVS tube D6, a voltage stabilizing diode D7 and a fuse F1, one end of the resistor R15, one end of the capacitor C11 and one end of the inductor L1 are all connected with an input end X0 of the chip U2, the other end of the inductor L1, one end of the capacitor C12 and one end of the inductor C13 are all connected with one end of a resistor R13, the other end of the resistor R13, one end of the capacitor C14, one end of the resistor R12, one end of the bidirectional TVS tube D6 and the negative electrode of the voltage stabilizing diode D7 are all connected with one end of a fuse R14, and the other end of the trigger circuit R1 is connected with one end of the external host computer 14, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, the other end of the capacitor C14, the other end of the bidirectional TVS tube D6, the other end of the voltage-stabilizing diode D7 and the other end of the external trigger host are all grounded; when the chip U2 is in a 24V active contact mode, the external trigger host is provided with an active contact and is connected with a trigger circuit through the active contact, the other end of the resistor R14 of the trigger circuit is connected with one end of the active contact through the fuse F1, and the other end of the active contact is connected to the ground of the trigger circuit; when the chip U2 is in a dry contact mode with line detection, the trigger circuit further comprises a resistor R1 and a resistor R2, the other end of the resistor R14 is connected with one end of a resistor R1 through a fuse F1, the other end of the resistor R1 and one end of the resistor R2 are both connected with one end of an external trigger host, and the other end of the resistor R2 is grounded.
Specifically, the working principle and the components of the present invention are specifically described as follows:
as shown in fig. 1-3, in this embodiment, the input terminals X0, X1, X2, and X3 of the chip U2 are all connected with an independent trigger circuit, so as to be suitable for different modes of the chip U2, in practice, a user can arbitrarily select one or more trigger circuits to be connected with an external trigger host according to the location of the external trigger host and whether there are active contacts, etc., the output terminal of the MCU control module is connected with the selection input terminal A, B, C of the chip U2, and further control the connection relationship between any input terminal (X0 to X7) of the chip U2 and the output terminal X thereof, that is, the MCU control module sends a high/low level to the selection input terminal A, B, C of the chip U2 to change the connection relationship between any input terminal (X0 to X7) of the chip U2 and the output terminal X thereof, wherein the output terminal X of the chip U2 is connected with the analog-to-digital conversion acquisition terminal of the MCU control module through a resistor R23 and a resistor R24, therefore, voltage acquisition of each trigger circuit is realized.
Specifically, under a general condition, the chip U2 is in a dry contact mode, one end of the external trigger host is directly connected to the fuse F1, a negative electrode of the external trigger host is connected to the ground of the trigger circuit, when the external trigger host is triggered, that is, one end of the external trigger host is short-circuited with the other end of the external trigger host, and is equal to the ground of the fuse F1, the voltage of the output end X of the U2 is 0.9V, because the output end X of the U2 is connected to the AD end of the MCU control module, that is, the voltage acquired by the AD end of the MCU control module is 0.9V, when the external trigger host is not triggered, that is, one end of the external trigger host is disconnected from the other end of the external trigger host and is equal to the ground of the fuse F1, the voltage acquired by the AD end of the MCU control module is 2.1V, and the MCU control module determines that the external trigger host is in one of a triggered state and an untriggered state according to the acquired power supply; further, when the external trigger host is provided with an active contact, namely the external trigger host is triggered, 24V voltage is output to the outside, the other end of the resistor R14 is connected with one end of the active contact of the external trigger host through the fuse F1, the other end of the active contact of the external trigger host is connected with the ground of the trigger circuit, when the external trigger host is triggered, the active contact outputs 24V voltage to the trigger circuit, the 24V voltage enters the trigger circuit through the fuse F1 to avoid overlarge current/voltage, then the current is limited through the resistor R14 and is stabilized to 3.3V through the zener diode D7, then the AD end of the MCU control module acquires that the voltage output by the chip U2 is 2.1V, and when the external trigger host is not triggered, the acquired voltage is 0.9V, so as to determine that the external trigger host provided with the active contact is in one of a triggered state and a non-triggered state.
When the distance between the external trigger host and the external device is far, the chip U2 is driven to be in a dry contact mode with line detection, a resistor R1 and a resistor R2 are added in the trigger circuit, the other end of the resistor R14 is connected with one end of a resistor R1 through a fuse F1, the other end of the resistor R1 and one end of the resistor R2 are both connected with one end of the external trigger host, and the other end of the resistor R2 is grounded, as shown in fig. 2, when the external trigger host is not triggered, one end of the external trigger host is short-circuited with the other end, and the other end of the resistor R1 is connected with the other end of the resistor R2, so that the voltage acquired by the AD end of the MCU control module is 0.4V, when the external trigger host is not triggered, the voltage acquired by the AD end of the MCU control module is disconnected with the other end, the voltage acquired by the AD end of the MCU control module is 0.84V, when a short circuit exists between one end of the resistor R1 and the other end of the resistor R2, the voltage collected by the AD end of the MCU control module is 0.18V, and when the resistor R1 and the fuse F1 are open or the resistor R2 and the trigger circuit are open, the voltage collected by the AD end of the MCU control module is 1.42V, so that the MCU control module determines that the external trigger host belongs to one of four states of triggering, not triggering, short-circuit connection and open-circuit connection according to the collected power.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (4)
1. A multi-trigger-point signal transmission device is characterized in that: the configurable trigger point module comprises a chip U2, a resistor R23, a voltage stabilizing diode D12, a capacitor C20, a resistor R24 and a trigger circuit, wherein the chip U2, the resistor R23, the voltage stabilizing diode D12, the capacitor C20, the resistor R24 and the trigger circuit are arranged on the configurable trigger point module, the output end of the chip U2 is connected with one end of a resistor R23, the other end of the resistor R23, one end of the capacitor C20 and the negative electrode of the voltage stabilizing diode D12 are connected with one end of the resistor R24, the other end of the resistor R24 is connected with an AD end of the MCU control module, the output end of the MCU control module is connected with a selection input end of the chip U2, and at least one input end of the chip U2 is connected with the external trigger host through the trigger circuit.
2. The multi-trigger-point signal delivery device of claim 1, wherein: the trigger circuit comprises a resistor R15, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, an inductor L1, a resistor R13, a resistor R12, a resistor R14, a bidirectional TVS tube D6, a voltage stabilizing diode D7 and a fuse F1, one end of the resistor R15, one end of the capacitor C11 and one end of the inductor L1 are all connected with the input end X0 of the chip U2, the other end of the inductor L1, one end of the capacitor C12 and one end of the inductor C13 are all connected with one end of a resistor R13, the other end of the resistor R13, one end of the capacitor C14, one end of the resistor R12, one end of the bidirectional TVS tube D6 and the cathode of the voltage stabilizing diode D7 are all connected with one end of the resistor R14, the other end of the resistor R14 is connected with one end of an external trigger host through a fuse F1, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, the other end of the capacitor C14, the other end of the bidirectional TVS tube D6, the other end of the voltage-stabilizing diode D7 and the other end of the external trigger host are all grounded.
3. The multi-trigger-point signal delivery apparatus of claim 2, wherein: the high-voltage switch further comprises a resistor R1 and a resistor R2, the other end of the resistor R14 is connected with one end of the resistor R1 through a fuse F1, the other end of the resistor R1 and one end of the resistor R2 are connected with one end of an external trigger host, and the other end of the resistor R2 is grounded.
4. The multi-trigger-point signal delivery apparatus of claim 2, wherein: the external trigger host is provided with an active contact, the other end of the resistor R14 is connected with one end of the active contact of the external trigger host through a fuse F1, the other end of the capacitor C11, the other end of the capacitor C12, the other end of the capacitor C13, the other end of the capacitor C14, the other end of the bidirectional TVS tube D6, the other end of the voltage-stabilizing diode D7 and the other end of the active contact of the external trigger host are grounded.
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| CN202023102954.3U CN213904104U (en) | 2020-12-21 | 2020-12-21 | Multi-trigger-point signal transmission device |
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| CN202023102954.3U CN213904104U (en) | 2020-12-21 | 2020-12-21 | Multi-trigger-point signal transmission device |
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| CN213904104U true CN213904104U (en) | 2021-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023045068A1 (en) * | 2021-09-27 | 2023-03-30 | 广州市保伦电子有限公司 | Dry and wet node acquisition circuit having protection and line monitoring functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023045068A1 (en) * | 2021-09-27 | 2023-03-30 | 广州市保伦电子有限公司 | Dry and wet node acquisition circuit having protection and line monitoring functions |
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Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Baolun Electronics Co.,Ltd. Address before: 510000 Building 1, industrial zone B, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd. |