CN216956730U - Control and detection circuit and device suitable for wireless input/output module - Google Patents
Control and detection circuit and device suitable for wireless input/output module Download PDFInfo
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- CN216956730U CN216956730U CN202220337701.4U CN202220337701U CN216956730U CN 216956730 U CN216956730 U CN 216956730U CN 202220337701 U CN202220337701 U CN 202220337701U CN 216956730 U CN216956730 U CN 216956730U
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Abstract
The control circuit in the control and detection circuit suitable for the wireless input/output module provided by the utility model has the advantages that the control end of the single chip microcomputer and the linkage signal output end are mutually isolated through the triode Q1 and the relay RL1, external interference cannot be conducted to a single chip microcomputer control signal, the anti-interference capability of the control circuit is effectively improved, the relay output is started by adopting a 1KHz fixed frequency as a control signal DO, the relay output cannot be started at high and low levels, the control circuit can be effectively prevented from being interfered by external radiation, and the probability of false triggering in control is effectively reduced. In addition, the detection circuit adopts optical coupling isolation, the anti-interference capability is improved, fault information of an output or input line and action information of the wireless input/output module are detected through corresponding pin combinations, and the accuracy of fault and action detection is improved.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a control and detection circuit and a device suitable for a wireless input/output module.
Background
The wireless input and output module is necessary equipment for realizing linkage control of related equipment by the wireless fire alarm system, and is mainly used for receiving data sent by the terminal equipment or the linkage equipment control cabinet and transmitting the data to the designated controller in the wireless linkage control of fire alarm, and receiving the instruction of the designated controller and forwarding the instruction to the designated terminal equipment or the linkage control cabinet.
At present, for the control and fault detection of the wireless input/output module, a control and detection circuit of the wired input/output module is generally used, and as shown IN fig. 1, a single chip microcomputer is used to output a high level (a DO output high level or a low level IN fig. 1) and a low level (a DO output high level or a low level) to control a relay RL1 to output a 24V level, and an output signal (a signal output from an "OUT 1" end IN fig. 1) and an input signal (a signal output from an "IN" end IN fig. 1) are collected and detected through resistance voltage division to determine whether the currently executed action information of the wireless input/output module or the fault occurs. Since the wired input/output module is generally supplied with power centrally by a dedicated fire-fighting power supply, the wired input/output module is less interfered by the outside world, and therefore the control and detection circuit shown in fig. 1 is applicable to the wired input/output module. However, for convenience of construction and deployment, the wireless input/output module is generally installed nearby the linked device, and power needs to be taken from the linked device, so that the wireless input/output module is easily interfered by the linked device. Therefore, when the control and detection circuit originally applied to the wired input/output module in fig. 1 is applied to the wireless input/output module, the control signal thereof is easily interfered, which may cause a false triggering condition, and similarly, the detection signal is also easily interfered, which may cause a situation that the acquired detection signal is wrong, thereby causing an inaccurate fault detection result.
SUMMERY OF THE UTILITY MODEL
The utility model aims to enhance the anti-interference capability of a control and detection circuit of a wireless input/output module, reduce false triggering and improve the fault detection accuracy, and provides the control and detection circuit and the control and detection device suitable for the wireless input/output module.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the control and detection circuit comprises a control circuit, an output detection circuit and an input detection circuit, wherein the output detection circuit and the input detection circuit are electrically connected with the control circuit, the control circuit comprises a triode Q1, a relay RL1 and a pin bank socket CON1, the control end of a single chip microcomputer is connected with the base electrode of the triode Q1, the emitter electrode of the triode Q1 is grounded, the collector electrode of the triode Q1 is connected with an interface 16 of the relay RL1, the control end of the single chip microcomputer is provided with a working voltage VCC _33 through an interface 1 of the relay RL1, an interface 4 of the pin bank socket CON1 is connected with an interface 4 of the relay RL1, and the interface 1 and the interface 3 of the pin bank socket CON1 are used for providing the working voltage VCC24 for a linkage signal output end of a wireless input and output module; the interface 8 of the relay RL1 provides 24VG working voltage for the output detection circuit and the input detection circuit;
the output detection circuit comprises optical couplers U3 and U4, the input detection circuit comprises optical couplers U1 and U2, the output detection circuit isolates an output detection signal of the single chip microcomputer from a linkage output signal of the wireless input and output module through the optical couplers U3 and U4, and the input detection circuit isolates an input detection signal of the single chip microcomputer from a linkage input signal of the wireless input and output module through the optical couplers U1 and U2;
the wireless input and output module is connected with the external linkage device through the pin header CON1 through a cable.
As a preferable scheme of the present invention, the control circuit further includes resistors R1, R2, R3, capacitors C1, C2, a double diode D4, diodes D6-D8, a fast recovery diode D5, transient diodes D1-D3, and self-recovery fuses F1 and F2, one end of the resistor R1 is connected to the control end of the single chip, the other end of the resistor R1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to pin No. 3 of the double diode D4, pin No. 2 of the double diode D4 is connected in series to the resistor R2 and then to the base of the triode Q1, and pin No. 1 of the double diode D4 is grounded;
one end of the capacitor C2 is connected with the No. 2 pin of the double diode D4, and the other end of the capacitor C2 is grounded; one end of the resistor R3 is connected with the base electrode of the triode Q1, and the other end of the resistor R3 is grounded; the anode of the fast recovery diode D5 is connected with the interface 16 of the relay RL1, and the cathode is connected with the interface 1 of the relay RL 1; one end of the self-recovery fuse F1 is connected to the interface 1 of the pin gang socket CON1, and the other end is connected to the interface 8 of the relay RL1 after being sequentially connected in series with the diodes D7 and D8 which are connected in the positive direction; one end of the self-recovery fuse F2 is connected with the interface 4 of the pin header CON1, and the other end of the self-recovery fuse F2 is connected with the interface 4 of the relay RL 1; the interface 1 of the pin header socket CON1 is externally connected with the anode of a power supply, the interface 2 is externally connected with the cathode of the power supply after being short-circuited with the interface 5, and the interface 3 is sequentially connected with the diode D6 and the diode D8 in series and then connected with the interface 8 of the relay RL 1;
the cathode of the transient diode D1 is connected to the interface 6 of the pin gang socket CON1, and the anode is connected to the interface 2 of the pin gang socket CON 1; the negative electrode of the transient diode D2 is connected in series with the self-recovery fuse F2 and then connected to the interface 4 of the pin header CON1, and the positive electrode of the transient diode D2 is connected to the interface 2 of the pin header CON 1; the cathode of the transient diode D3 is connected to the anode of the power supply, and the anode is connected to the interface 2 of the pin gang socket CON 1.
As a preferable scheme of the present invention, the output detection circuit further includes capacitors C6-C9, resistors R11-R16, and a diode D10, an interface 1 of the optocoupler U3 is connected to a first detection end DI _0 of the single chip microcomputer, and is connected to VCC _33 for power supply after being connected in series to the resistor R13, and is connected to ground after being connected in series to the capacitor C6; the interface 3 of the optical coupler U3 is grounded; an interface 2 of the optocoupler U3 is connected with an interface 8 of the relay RL1 after being connected with the resistor R11 in series, and an interface 4 of the optocoupler U3 is connected with an interface 4 of the relay RL 1; the resistor R12 is connected in parallel between the interface 2 and the interface 4 of the optical coupler U3; the capacitor C7 is connected in parallel with two ends of the resistor R12;
the negative electrode of the diode D10 is connected with the interface 4 of the optocoupler U3, and the positive electrode of the diode D10 is connected with the interface 2 of the optocoupler U4; the interface 2 of the optocoupler U4 is further connected with an interface 8 of the relay RL1 after being connected with the resistor R16 in series, the interface 4 of the optocoupler U4 is connected with the interface 2 of the pin array socket CON1, the resistor R15 is connected between the interface 2 and the interface 4 of the optocoupler U4 in parallel, and the capacitor C8 is connected at two ends of the resistor R15 in parallel; interface 1 of opto-coupler U4 connects the second detection end DI _ C of singlechip and concatenate electric capacity C9 back ground connection and concatenate connect VCC _33 power supply behind the resistance R14, the 3 ground connections of opto-coupler U4's interface.
As a preferable scheme of the present invention, the input detection circuit further includes resistors R4-R10, capacitors C3-C5, and a zener diode D9, an interface 1 of the optocoupler U1 is connected in series with the resistor R4, then connected to an interface 1 of the relay RL1, and connected to a third detection end RL _ STA2 of the single chip microcomputer, an interface 3 of the optocoupler U1 is grounded, and an interface 2 is connected in series with the resistor R9, then connected to an interface 6 of the pin gang socket CON 1; the resistor R10 is connected between the interface 2 and the interface 4 of the optocoupler U1, one end of the resistor R5 is connected with the interface 2 of the optocoupler U1, and the other end of the resistor R5 is connected with the interface 8 of the relay RL 1; an interface 4 of the optocoupler U1 is connected in series with the voltage stabilizing diode D9 which is reversely connected, then is connected with an interface 2 of the optocoupler U2, is connected in series with the resistor R8, then is connected with an interface 4 of the optocoupler U2, and is connected in series with the capacitor C5, then is connected with an interface 4 of the optocoupler U2; the resistor R7 is connected in parallel between the interface 2 and the interface 4 of the optical coupler U2; the capacitor C3 is connected in parallel between an interface 2 of the optical coupler U1 and an interface 4 of the optical coupler U2; one end of the capacitor C4 is connected with the interface 2 of the optocoupler U1 after being connected with the resistor R9 in series, the other end of the capacitor C4 is connected with the interface 4 of the optocoupler U2, and the interface 4 of the optocoupler U2 is connected with the interface 2 of the pin header CON 1; the interface 3 of the optocoupler U2 is grounded, and the interface 1 is connected with the interface 1 of the relay RL1 after being connected with the resistor R6 in series and is connected with the fourth detection end RL _ STA1 of the single chip microcomputer.
As a preferable scheme of the utility model, the type of the relay RL1 is HFD 27/003-S.
In a preferred embodiment of the present invention, the optocouplers U1, U2, U3, and U4 are of the type EL3H 7.
The utility model also provides a device, and the control and detection circuit suitable for the wireless input and output module is distributed in the device.
The control circuit of the control and detection circuit suitable for the wireless input/output module provided by the utility model has the advantages that the control end of the single chip microcomputer is isolated from the linkage signal output end through the triode Q1 and the relay RL1, external interference cannot be conducted to a single chip microcomputer control signal, the anti-interference capability of the control circuit is effectively improved, the output of the relay is started by adopting the fixed frequency of 1KHz as the control signal DO, the output of the relay cannot be started at high and low levels, the interference of the control circuit by external radiation can be effectively resisted, and the probability of false triggering in control is effectively reduced. In addition, the detection circuit adopts optical coupling isolation, the anti-interference capability is improved, fault information of an output or input line and action information of the wireless input/output module are detected through corresponding pin combinations, and the accuracy of fault and action detection is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a conventional control and detection circuit for a wired I/O module;
fig. 2 is a schematic structural diagram of a control circuit in a control and detection circuit suitable for a wireless input/output module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an output detection circuit in a control and detection circuit for a wireless I/O module;
fig. 4 is a schematic diagram of an input detection circuit in a control and detection circuit for a wireless input/output module.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate an orientation or a positional relationship based on that shown in the drawings, it is only for convenience of description and simplification of description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations on the present patent, and specific meanings of the terms may be understood according to specific situations by those of ordinary skill in the art.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to solve the problem that the existing control and detection circuit for wired input/output module is used in the wireless input/output module, which has poor anti-interference capability, and is liable to cause errors in the acquired detection signal and inaccurate fault detection result, the present embodiment provides a control and detection circuit suitable for the wireless input/output module, as shown in fig. 2-4, the control and detection circuit includes a control circuit, an output detection circuit and an input detection circuit, which are electrically connected to the control circuit, specifically, as shown in fig. 2, the control circuit includes a transistor Q1, a relay RL1, a pin bank socket CON1, resistors R1, R2, R3, capacitors C1, C2, a double diode D4, diodes D6-D8, a fast recovery diode D5, transient diodes D1-D3, self-recovery fuses F1 and F2, one end of the resistor R1 is connected to the control end of the single chip microcomputer, the other end of the capacitor C1 is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with the pin No. 3 of the double diode D4, the pin No. 2 of the double diode D4 is connected with the base electrode of the triode Q1 after being connected with the resistor R2 in series, and the pin No. 1 of the double diode D4 is grounded; the emitting electrode of the triode Q1 is grounded, the collecting electrode is connected with the interface 16 of the relay RL1, the control end of the singlechip is provided with working voltage VCC _33 by the interface 1 of the relay RL1, the interface 4 of the pin bank socket CON1 is connected with the interface 4 of the relay RL1, and the interface 1 and the interface 3 of the pin bank socket CON1 provide working voltage VCC24 for the linkage signal output end of the wireless input and output module; interface 8 of relay RL1 provides 24VG operating voltage for the output detection circuit and the input detection circuit; the wireless input and output module is connected with the external linkage device through the pin header CON1 by a cable.
One end of a capacitor C2 in the control circuit is connected with a No. 2 pin of the double diode D4, and the other end of the capacitor C2 is grounded; one end of the resistor R3 is connected with the base electrode of the triode Q1, and the other end is grounded; the positive electrode of the fast recovery diode D5 is connected with the interface 16 of the relay RL1, and the negative electrode of the fast recovery diode D5 is connected with the interface 1 of the relay RL 1; one end of the self-recovery fuse F1 is connected with the interface 1 of the pin gang socket CON1, and the other end is connected with the interface 8 of the relay RL1 after being sequentially connected with the diodes D7 and D8 which are connected in series; one end of the self-recovery fuse F2 is connected with the interface 4 of the pin gang socket CON1, and the other end is connected with the interface 4 of the relay RL 1; an interface 1 of the pin header CON1 is externally connected with a positive electrode of a power supply, an interface 2 is connected with a negative electrode of the power supply after being short-circuited with an interface 5 (in fig. 2, the pin header CON1 is connected with external linkage equipment through a cable, a pin 1 is connected with 24V +, a pin 2 is connected with 24V-in parallel with a negative terminal B-, a pin 3 is connected with a positive terminal B + of an external battery, a pin 4 is connected with a linkage output signal O, a pin 5 is connected with a linkage signal common terminal COM, and a pin 6 is connected with a linkage input signal I), and an interface 3 is sequentially connected with a diode D6 and a diode D8 which are connected in series and then connected with an interface 8 of a relay RL 1;
the positive electrode of the transient diode D1 is connected with the interface 6 of the pin socket CON1, and the negative electrode is connected with the negative electrode of the power supply; the positive electrode of the transient diode D2 is connected in series with the self-recovery fuse F2 and then connected with the interface 4 of the pin socket CON1, and the negative electrode is connected with the negative electrode of the power supply; the positive electrode of the transient diode D3 is connected in series with the self-recovery fuse F1 and then connected with the interface 1 of the pin socket CON1, and the negative electrode is connected with the negative electrode of the power supply;
as shown in FIG. 2, the control circuit is powered by an isolated power supply, wherein the control end of the single chip microcomputer is powered by VCC _33, and the linkage signal output end is powered by VCC 24. The singlechip outputs a control signal DO with the frequency of 1KHz and the duty ratio of 50 percent, controls the on-off of a triode Q1, further controls the on-off of a relay RL1, and outputs a 24V linkage control signal through a pin array socket CON 1. The singlechip control end and the linkage signal output end are mutually isolated, and external interference cannot be conducted to a singlechip control signal, so that the anti-interference capability of the control circuit is effectively improved. The relay RL1 output is switched on by adopting a fixed frequency of 1KHz as a control signal instead of switching on the relay output by high and low levels as shown in the figure 1, so that the external radiation interference can be effectively resisted.
As shown in fig. 3, the output detection circuit further includes an optocoupler U3, U4, a capacitor C6-C9, a resistor R11-R16, and a diode D10, wherein an interface 1 of the optocoupler U3 is connected to a first detection end DI _0 of the single chip, and is connected to VCC _33 for power supply after being connected in series with the resistor R13 and is grounded after being connected in series with the capacitor C6; interface 3 of the optical coupler U3 is grounded; an interface 2 of the optocoupler U3 is connected with an interface 8 of the relay RL1 after being connected with a resistor R11 in series, and an interface 4 of the optocoupler U3 is connected with an interface 4 of the relay RL 1; the resistor R12 is connected in parallel between the interface 2 and the interface 4 of the optical coupler U3; the capacitor C7 is connected in parallel with two ends of the resistor R12;
the cathode of the diode D10 is connected with the interface 4 of the optocoupler U3, and the anode of the diode D10 is connected with the interface 2 of the optocoupler U4; the interface 2 of the optocoupler U4 is further connected with an interface 8 of the relay RL1 after being connected with a resistor R16 in series, an interface 4 of the optocoupler U4 is connected with an interface 2 of the pin socket CON1, a resistor R15 is connected between the interface 2 and the interface 4 of the optocoupler U4 in parallel, and a capacitor C8 is connected with two ends of the resistor R15 in parallel; interface 1 of opto-coupler U4 connects the second detection end DI _ C of singlechip and concatenates electric capacity C9 back ground connection and concatenate resistance R14 back connection VCC _33 power supply, the 3 ground connections of opto-coupler U4's interface.
The output detection circuit is also powered by an isolation power supply, wherein a control end of the single chip microcomputer is powered by VCC _33, a linkage signal output end is powered by 24VG, the output detection circuit is isolated by optical couplers, the fault information and the action information of an output signal of the wireless input/output module are detected by the combination of DI _ O, DI _ C pins, and DI _ O, DI _ C judges the type of the fault of the output line of the wireless input/output module and whether the action of the output signal exists or not are shown in the following table 1:
TABLE 1
As shown in fig. 4, the input detection circuit includes an optocoupler U1, U2, resistors R4-R10, capacitors C3-C5, and a zener diode D9, an interface 1 of the optocoupler U1 is connected in series with the resistor R4, then connected with an interface 1 of a relay RL1, and connected with a third detection end RL _ STA2 of the single chip microcomputer, an interface 3 of the optocoupler U1 is grounded, and an interface 2 is connected in series with the resistor R9, and then connected with an interface 6 of the pin socket CON 1; the resistor R10 is connected between the interface 2 and the interface 4 of the optocoupler U1, one end of the resistor R5 is connected with the interface 2 of the optocoupler U1, and the other end of the resistor R5 is connected with the interface 8 of the relay RL 1; an interface 4 of the optocoupler U1 is connected with a voltage stabilizing diode D9 in series and then connected with an interface 2 of the optocoupler U2, is connected with a resistor R8 in series and then connected with an interface 4 of the optocoupler U2 in series and is connected with a capacitor C5 in series and then connected with an interface 4 of the optocoupler U2; the resistor R7 is connected in parallel between the interface 2 and the interface 4 of the optical coupler U2; the capacitor C3 is connected in parallel between the interface 2 of the optical coupler U1 and the interface 4 of the optical coupler U2; one end of the capacitor C4 is connected with the interface 2 of the optocoupler U1 after being connected with the resistor R9 in series, the other end of the capacitor C4 is connected with the interface 4 of the optocoupler U2, and the interface 4 of the optocoupler U2 is connected with the interface 2 of the pin socket CON 1; an interface 3 of the optocoupler U2 is grounded, and an interface 1 is connected with an interface 1 of the relay RL1 after being connected with a resistor R6 in series and is connected with a fourth detection end RL _ STA1 of the single chip microcomputer.
The input detection circuit is also powered by an isolated power supply, wherein the input end of the single chip microcomputer is powered by VCC _33, and the input end of the linkage signal is powered by 24 VG. The input detection circuit adopts optical coupling isolation, detects input line fault information and input signal action information of the wireless input and output module through the combination of RL _ STA2 and RL _ STA1 pins, and the RL _ STA2 and RL _ STA1 judge the input line fault type of the wireless input and output module and whether there is an action of an input signal, and the method is shown in the following table 2:
TABLE 2
It should be understood that the above-described embodiments are merely preferred embodiments of the utility model and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the utility model as long as they do not depart from the spirit of the utility model. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (7)
1. A control and detection circuit suitable for a wireless input/output module is characterized by comprising a control circuit, an output detection circuit and an input detection circuit, wherein the output detection circuit and the input detection circuit are electrically connected with the control circuit, the control circuit comprises a triode Q1, a relay RL1 and a pin header CON1, the control end of a single chip microcomputer is connected with the base electrode of the triode Q1, the emitting electrode of the triode Q1 is grounded, the collecting electrode of the triode Q1 is connected with an interface 16 of the relay RL1, the control end of the single chip microcomputer is provided with a working voltage VCC _33 through an interface 1 of the relay RL1, an interface 4 of the pin header CON1 is connected with an interface 4 of the relay RL1, and the interfaces 1 and 3 of the pin header CON1 are used for providing the working voltage VCC24 for a linkage signal output end of the wireless input/output module; the interface 8 of the relay RL1 provides 24VG working voltage for the output detection circuit and the input detection circuit;
the output detection circuit comprises optical couplers U3 and U4, the input detection circuit comprises optical couplers U1 and U2, the output detection circuit isolates an output detection signal of the single chip microcomputer from a linkage output signal of the wireless input and output module through the optical couplers U3 and U4, and the input detection circuit isolates an input detection signal of the single chip microcomputer from a linkage input signal of the wireless input and output module through the optical couplers U1 and U2;
the wireless input and output module is connected with external linkage equipment through the pin header CON1 through a cable.
2. The control and detection circuit suitable for the wireless input/output module according to claim 1, wherein the control circuit further comprises resistors R1, R2, R3, capacitors C1, C2, a double diode D4, diodes D6-D8, a fast recovery diode D5, transient diodes D1-D3, and self-recovery fuses F1 and F2, one end of the resistor R1 is connected to the control terminal of the single chip microcomputer, the other end of the resistor R1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to pin 3 of the double diode D4, pin 2 of the double diode D4 is connected to the base of the triode Q1 after being connected to the resistor R2 in series, and pin 1 of the double diode D4 is grounded;
one end of the capacitor C2 is connected with the No. 2 pin of the double diode D4, and the other end of the capacitor C2 is grounded; one end of the resistor R3 is connected with the base electrode of the triode Q1, and the other end of the resistor R3 is grounded; the anode of the fast recovery diode D5 is connected with the interface 16 of the relay RL1, and the cathode is connected with the interface 1 of the relay RL 1; one end of the self-recovery fuse F1 is connected to the interface 1 of the pin gang socket CON1, and the other end is connected to the interface 8 of the relay RL1 after being sequentially connected in series with the diodes D7 and D8 which are connected in the positive direction; one end of the self-recovery fuse F2 is connected with the interface 4 of the pin header CON1, and the other end of the self-recovery fuse F2 is connected with the interface 4 of the relay RL 1; the pin header socket CON1 is characterized in that an interface 1 of the pin header socket CON1 is externally connected with the anode of a power supply, an interface 2 is externally connected with the cathode of the power supply after being short-circuited with an interface 5, and an interface 3 is sequentially connected with a diode D6 and a diode D8 which are connected in series and then connected with an interface 8 of the relay RL 1;
the cathode of the transient diode D1 is connected to the interface 6 of the pin gang socket CON1, and the anode is connected to the interface 2 of the pin gang socket CON 1; the negative electrode of the transient diode D2 is connected in series with the self-recovery fuse F2 and then connected to the interface 4 of the pin gang socket CON1, and the positive electrode of the transient diode D2 is connected to the interface 2 of the pin gang socket CON 1; the negative electrode of the transient diode D3 is connected in series with the self-recovery fuse F1 and then connected to the interface 1 of the pin gang socket CON1, and the positive electrode of the transient diode D3 is connected to the interface 2 of the pin gang socket CON 1.
3. The control and detection circuit suitable for the wireless input and output module according to claim 1 or 2, wherein the output detection circuit further comprises capacitors C6-C9, resistors R11-R16, and a diode D10, wherein an interface 1 of the optical coupler U3 is connected to a first detection end DI _0 of the single chip microcomputer, is connected to a resistor R13 in series, is connected to VCC _33 for power supply, and is connected to the capacitor C6 in series and then is grounded; the interface 3 of the optical coupler U3 is grounded; an interface 2 of the optocoupler U3 is connected with an interface 8 of the relay RL1 after being connected with the resistor R11 in series, and an interface 4 of the optocoupler U3 is connected with an interface 4 of the relay RL 1; the resistor R12 is connected in parallel between the interface 2 and the interface 4 of the optical coupler U3; the capacitor C7 is connected in parallel with two ends of the resistor R12;
the cathode of the diode D10 is connected with the interface 4 of the optocoupler U3, and the anode of the diode D10 is connected with the interface 2 of the optocoupler U4; the interface 2 of the optocoupler U4 is also connected with the interface 8 of the relay RL1 after being connected with the resistor R16 in series, the interface 4 of the optocoupler U4 is connected with the interface 2 of the pin arranging socket CON1, the resistor R15 is connected between the interface 2 and the interface 4 of the optocoupler U4 in parallel, and the capacitor C8 is connected at two ends of the resistor R15 in parallel; interface 1 of opto-coupler U4 connects the second detection end DI _ C of singlechip and concatenate electric capacity C9 back ground connection and concatenate connect VCC _33 power supply behind the resistance R14, the 3 ground connections of opto-coupler U4's interface.
4. The control and detection circuit suitable for the wireless input and output module according to claim 1, wherein the input detection circuit further comprises resistors R4-R10, capacitors C3-C5 and a zener diode D9, an interface 1 of the optocoupler U1 is connected in series with the resistor R4 and then connected with an interface 1 of the relay RL1 and connected with a third detection end RL _ STA2 of the single chip microcomputer, an interface 3 of the optocoupler U1 is grounded, and an interface 2 is connected in series with the resistor R9 and then connected with an interface 6 of the pin gang socket CON 1; the resistor R10 is connected between the interface 2 and the interface 4 of the optocoupler U1, one end of the resistor R5 is connected with the interface 2 of the optocoupler U1, and the other end of the resistor R5 is connected with the interface 8 of the relay RL 1; an interface 4 of the optocoupler U1 is connected with a voltage stabilizing diode D9 in series and then connected with an interface 2 of the optocoupler U2, is connected with a resistor R8 in series and then connected with an interface 4 of the optocoupler U2, and is connected with a capacitor C5 in series and then connected with an interface 4 of the optocoupler U2; the resistor R7 is connected in parallel between the interface 2 and the interface 4 of the optocoupler U2; the capacitor C3 is connected in parallel between an interface 2 of the optical coupler U1 and an interface 4 of the optical coupler U2; one end of the capacitor C4 is connected with the interface 2 of the optocoupler U1 after being connected with the resistor R9 in series, the other end of the capacitor C4 is connected with the interface 4 of the optocoupler U2, and the interface 4 of the optocoupler U2 is connected with the interface 2 of the pin header CON 1; the interface 3 of the optocoupler U2 is grounded, and the interface 1 is connected with the interface 1 of the relay RL1 after being connected with the resistor R6 in series and is connected with the fourth detection end RL _ STA1 of the single chip microcomputer.
5. The control and detection circuit for a wireless input/output module according to claim 1, wherein the relay RL1 is model number HFD 27/003-S.
6. The control and detection circuit suitable for the wireless input and output module of claim 1, wherein the optocouplers U1, U2, U3 and U4 are of type EL3H 7.
7. An apparatus, characterized in that the apparatus is provided with a control and detection circuit suitable for a wireless input and output module according to any one of claims 1 to 6.
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| CN202220337701.4U CN216956730U (en) | 2022-02-14 | 2022-02-14 | Control and detection circuit and device suitable for wireless input/output module |
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| CN202220337701.4U CN216956730U (en) | 2022-02-14 | 2022-02-14 | Control and detection circuit and device suitable for wireless input/output module |
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