CN214755486U - Fire control water supply control relay module - Google Patents
Fire control water supply control relay module Download PDFInfo
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- CN214755486U CN214755486U CN202120848979.3U CN202120848979U CN214755486U CN 214755486 U CN214755486 U CN 214755486U CN 202120848979 U CN202120848979 U CN 202120848979U CN 214755486 U CN214755486 U CN 214755486U
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Abstract
The utility model relates to the technical field of fire fighting equipment, in particular to a fire fighting water supply control relay module, which comprises a relay, a relay control signal, a feedback signal and an electronic controller ECU (electronic control Unit), wherein the relay feedback signal feeds back the state of a main contact of the relay to the main control unit of the electronic controller ECU, and controls the relay through the relay control signal, an action actuator of the relay is simultaneously connected with an overcurrent protection module, the overcurrent protection module is connected with a power supply pack through an undervoltage protection module, when the output of the undervoltage protection module is a high level signal and is undervoltage, when an input voltage VIN is greater than an output value, the output signal of the undervoltage protection module circuit is a low level, the relay is controlled to be opened, the problem that the traditional relay control circuit cannot effectively protect under the undervoltage condition, and cannot effectively deal with and protect under the overcurrent condition, and the real-time monitoring of the function running state can not be realized.
Description
Technical Field
The utility model relates to a fire-fighting equipment technical field, concretely relates to fire control water supply control relay module.
Background
"fire control" is to eliminate hidden troubles and prevent disasters (i.e. the general term for preventing and solving human, natural and accidental disasters in life, work and learning process of people), and the meaning of the narrow sense is that: meaning (extinguishing) fire. The method mainly comprises the steps of rescuing personnel on a fire scene, rescuing important facilities and equipment, rescuing cultural relics, protecting and rescuing important properties safely, extinguishing fire and the like. Aims to reduce the damage degree caused by fire and reduce casualties and property loss.
An electric control device for a relay is an electric appliance in which a controlled amount is caused to change in a predetermined step in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. It has an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop).
Relay control circuit often uses in current fire control water supply control, but traditional relay control circuit can not effectively make the protection at the under-voltage condition, also can't effectually make reply and protection if meetting under the overcurrent condition simultaneously, can not solve to function running state's real time monitoring again, consequently this paper proposes a fire control water supply control relay module.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a fire control water supply control relay module for solve traditional relay control circuit, can not effectively make the protection in the undervoltage condition, also can't effectually make reply and protection if meet under the overcurrent condition simultaneously, can not be to the problem of the real time monitoring of function running state again.
The utility model discloses a following technical scheme realizes:
the utility model discloses a fire control feedwater control relay module, including relay, relay control signal and feedback signal and electronic controller ECU, the state of relay feedback signal feedback relay main contact to electronic controller ECU the main control unit, and pass through relay control signal control the relay, relay action executor is connected with overcurrent protection module simultaneously, overcurrent protection module passes through undervoltage protection module and connects the power supply package, undervoltage protection module output is when high level signal takes place the undervoltage, when input voltage VIN is greater than the output value, undervoltage protection module circuit's output signal is low level, and control is opened the relay.
Furthermore, the power supply group VIN in the under-voltage protection module is divided by resistors and then the analog signal voltage Vt transmitted to the reverse input terminal of the comparator CMP3 is greater than the reference voltage Vref2 at the forward input terminal of the comparator CMP3, and the output of the comparator CMP3 is a low-level signal.
Furthermore, the low level signal output by the CMP3 reaches the gate of the switching tube NM1 through the buffer 1, at this time, the switching tube NM1 is in an off state, and the low level signal reaches the output end of the undervoltage protection module through the buffer 1 and the buffer 2, the output signal VO of the output end of the undervoltage protection module is a low level signal, and the low level signal transmits a signal to the driving module through logic synthesis to control the on-off relay.
Furthermore, the electronic controller ECU comprises a main control unit, a monitoring unit, a driving unit and a redundant shutdown path circuit.
Furthermore, the main control unit mainly controls the driving unit and the monitoring unit through the SPI, acquires the states of feedback signals of the driving unit, the monitoring unit and the relay, and triggers the turn-off output to prohibit the output of the ECU.
Further, the over-current protection module includes a comparator CMP1, an oscillator, and a timer module.
Furthermore, the positive input end of the comparator CMP1 is the input end of the overcurrent protection module, which is connected to the output end of the previous stage voltage sampling module, and the comparator CMP1 receives the output signal V1 of the previous stage voltage sampling module, and compares the output signal V1 with the reference voltage Vref1 of the reverse input end to obtain the output signal V2 of the comparator CMP1, so that the operation of the oscillator is controlled by V2.
Furthermore, when the oscillator works normally, a clock signal CLK is generated at the output end, the clock signal CLK is connected to the input end of the timer to provide a clock signal for the timer, the timer is controlled to time, and after the timer times, an output signal V3 is generated to control the undervoltage protection module.
Furthermore, the undervoltage protection module comprises a comparator CMP3, a buffer, a resistor and a MOS switch tube NM1, wherein the resistors R1, R2 and R3 are resistors of the same type, and the resistors R1, R2 and R3 are connected in series to form a resistor voltage dividing structure, the drain and source of the switch tube NM1 are connected to two sides of the resistor R1, the gate is controlled by the output of the comparator, and the switch tube NM1 is connected in parallel with the resistor R1.
The utility model has the advantages that:
the utility model discloses utilize the work of comparator cooperation time-recorder through V2 control oscillator, after the time-recorder timing to the settlement time, its output is just maintain the high level all the time to the high level by the low level upset, and the realization overcurrent protection is gone up to electricity again. When the output of the undervoltage protection module is a high-level signal and is undervoltage, the input voltage VIN can make the output signal of the undervoltage protection module circuit be a low level again only when reaching a larger value, and the control of opening the relay realizes voltage hysteresis by the method, thereby ensuring normal work.
The utility model discloses master control unit accomplishes functions such as the collection inspection of input signal, output signal's control, data memory's access, and the monitoring unit is accomplished the real time monitoring to function running state, the diagnosis of self memory, is to functions such as test and the control of output port shutoff route. The two units monitor each other, any one of the two units has a problem, and the reset of the whole system can be triggered and the output end of the path is turned off, so that the safety of the relay control system is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a fire-fighting water supply control relay module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment discloses a fire control water supply control relay module as shown in fig. 1, including relay, relay control signal and feedback signal and electronic controller ECU, the state of relay feedback signal feedback relay main contact to electronic controller ECU master control unit, and pass through relay control signal control the relay, relay effect executor is connected with overcurrent protection module simultaneously, overcurrent protection module passes through undervoltage protection module and connects the power supply package, when undervoltage protection module output takes place for high level signal undervoltage, when input voltage VIN is greater than the output value, undervoltage protection module circuit's output signal is the low level, and control is opened the relay.
In a further implementation of this embodiment, under a normal condition, the analog signal voltage Vt that the power supply group VIN passes through the resistor voltage divider and then to the reverse input terminal of the comparator CMP3 is greater than the reference voltage Vref2 at the forward input terminal of the comparator CMP3, so the comparator CMP3 outputs a low level signal, the low level signal reaches the gate of the switching tube NM1 through the buffer 1, the switching tube NM1 is in an off state at this time, and the low level signal reaches the output terminal of the undervoltage protection module through the buffer 1 and the buffer 2, so the output signal VO of the output terminal of the undervoltage protection module is a low level signal at this time, the low level signal transmits a signal to the driving module through logic synthesis to control the start-up relay, and at this time, if other modules detect that the execution controller is in a normal state, the motor will be started normally.
In this embodiment, a high level signal at the output end of the comparator CMP3 is transmitted to the output end VO through the buffer 1 and the buffer 2, the output signal VO at the output end is a high level, the high level signal is transmitted to the driving module through logic synthesis to control the electronic relay to be turned off, and no matter what state the motor is detected by other modules, the electronic relay is turned off to turn off the motor, so that the motor is protected from being damaged.
In a further implementation of this embodiment, the difference between the voltage Vt at the inverting input of the comparator CMP3 when the output signal VO is inverted from high to low and vice versa is output from the brown-out module. The voltage Vt of the reverse input end of a comparator CMP3 is controlled by whether a resistor R1 is short-circuited or not, for the input voltage VIN with the same size, the voltage Vt of the reverse input end of the comparator CMP3 when the resistor R1 is short-circuited is smaller than the voltage when the resistor R1 is not short-circuited, namely, when the resistor R1 is short-circuited, namely the undervoltage protection module outputs a high-level signal and is undervoltage, the input voltage VIN can enable the output signal of the undervoltage protection module circuit to be low level again only when reaching a larger value, and the relay is controlled to be turned on to turn on a motor to supply fire water normally.
The undervoltage protection module of the embodiment includes a comparator CMP3, a buffer, a resistor, and a MOS switch NM1, where the resistors R1, R2, and R3 are resistors of the same type, and the resistors R1, R2, and R3 are connected in series to form a resistor voltage dividing structure, the drain and source of the switch NM1 are connected to both sides of the resistor R1, the gate is controlled by the comparator output, and the switch NM1 is connected in parallel to the resistor R1.
In a further implementation of this embodiment, in a normal situation, the voltage Vt of the analog signal that is transmitted to the reverse input terminal of the comparator CMP3 after VIN is divided by the resistor is greater than the reference voltage Vref2 at the forward input terminal of the comparator CMP3, so the comparator CMP3 outputs a low level signal, the low level signal reaches the gate of the switching tube NM1 through the buffer 1, the switching tube NM1 is in an off state at this time, and the low level signal reaches the output terminal of the under-voltage protection module through the buffer 1 and the buffer 2, so the output signal VO of the output terminal of the under-voltage protection module is a low level signal at this time, the low level signal transmits a signal to the driving module through logic synthesis to control to turn on the electronic relay, at this time, if other modules detect that the motor is in a normal state, the motor is normally started, and fire water supply is normally performed.
The electronic controller ECU of the present embodiment includes a main control unit, a monitoring unit, a driving unit, and a redundant off-path circuit. The master control unit mainly controls the driving unit and the monitoring unit through the SPI, acquires the states of feedback signals of the driving unit, the monitoring unit and the relay, and triggers and turns off output to prohibit the output of the ECU.
In a further implementation of this embodiment, the main control unit completes functions such as acquisition and inspection of input signals, control of output signals, and access to the data storage, and the monitoring unit completes functions such as real-time monitoring of the operating state of the functions, diagnosis of its own internal memory, and testing and control of the shutdown path of the output port. The two units monitor each other, any one of the two units has a problem, and the reset of the whole system can be triggered and the output end of the path is turned off, so that the safety of the relay control system is realized.
To sum up, the utility model discloses utilize comparator cooperation time-recorder to pass through the work of V2 control oscillator, after the time-recorder timing to the settlement time, its output is just maintain the high level all the time to the high level by the low level upset, until electrifying again and realizing overcurrent protection. When the output of the undervoltage protection module is a high-level signal and is undervoltage, the input voltage VIN can make the output signal of the undervoltage protection module circuit be a low level again only when reaching a larger value, and the control of opening the relay realizes voltage hysteresis by the method, thereby ensuring normal work.
The utility model discloses master control unit accomplishes functions such as the collection inspection of input signal, output signal's control, data memory's access, and the monitoring unit is accomplished the real time monitoring to function running state, the diagnosis of self memory, is to functions such as test and the control of output port shutoff route. The two units monitor each other, any one of the two units has a problem, and the reset of the whole system can be triggered and the output end of the path is turned off, so that the safety of the relay control system is realized.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a fire control water supply control relay module, its characterized in that includes relay, relay control signal and feedback signal and electronic controller ECU, the state of relay feedback signal feedback relay main contact to electronic controller ECU master control unit, and pass through relay control signal control the relay, relay action executor is connected with overcurrent protection module simultaneously, overcurrent protection module passes through undervoltage protection module and connects the power supply package, undervoltage protection module output is when high level signal takes place the undervoltage, when input voltage VIN is greater than the output value, undervoltage protection module circuit's output signal is the low level, and control is opened the relay.
2. The fire-fighting water supply control relay module as claimed in claim 1, wherein the voltage Vt of the analog signal transmitted from the power supply group VIN to the reverse input terminal of the comparator CMP3 after being divided by the resistor in the undervoltage protection module is greater than the reference voltage Vref2 at the forward input terminal of the comparator CMP3, and the output of the comparator CMP3 is a low level signal.
3. The fire-fighting water supply control relay module set according to claim 2, wherein the low level signal output by the CMP3 reaches the gate of the switching tube NM1 through the buffer 1, the switching tube NM1 is in an off state, the low level signal reaches the output end of the undervoltage protection module through the buffer 1 and the buffer 2, the output signal VO of the undervoltage protection module is a low level signal, and the low level signal transmits a signal to the driving module through logic synthesis to control the on-relay.
4. A fire feedwater control relay module as recited in claim 1 wherein the electronic controller ECU comprises a main control unit, a monitoring unit, a drive unit, and redundant off-path circuitry.
5. A fire control water supply control relay module as claimed in claim 4, wherein the main control unit controls the driving unit and the monitoring unit mainly through the SPI, and obtains states of feedback signals of the driving unit, the monitoring unit and the relay, and triggers the turn-off output to prohibit the output of the ECU.
6. A fire service water supply control relay module as recited in claim 1, wherein the overcurrent protection module comprises a comparator CMP1, an oscillator and a timer module.
7. The fire-fighting water supply control relay module as claimed in claim 6, wherein the positive input end of the comparator CMP1 is the input end of the overcurrent protection module, which is connected to the output end of the previous stage voltage sampling module, the comparator CMP1 receives the output signal V1 of the previous stage voltage sampling module, and compares the output signal V1 with the reference voltage Vref1 of the reverse input end to obtain the output signal V2 of the comparator CMP1, so as to control the operation of the oscillator by V2.
8. A fire-fighting water supply control relay module as claimed in claim 6, wherein when the oscillator is working normally, a clock signal CLK is generated at the output end, the clock signal CLK is connected to the input end of the timer to provide a clock signal for the timer, the timer is controlled to time, and after the timer times, an output signal V3 is generated to control the undervoltage protection module.
9. The fire-fighting water supply control relay module according to claim 1, characterized in that the undervoltage protection module comprises a comparator CMP3, a buffer, a resistor and a MOS switch tube NM1, wherein the resistors R1, R2 and R3 are of the same type, the resistors R1, R2 and R3 are connected in series to form a resistor voltage division structure, the drain and the source of the switch tube NM1 are connected to two sides of the resistor R1, the grid is controlled by the output of the comparator, and the switch tube NM1 is connected in parallel with the resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120848979.3U CN214755486U (en) | 2021-04-23 | 2021-04-23 | Fire control water supply control relay module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120848979.3U CN214755486U (en) | 2021-04-23 | 2021-04-23 | Fire control water supply control relay module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214755486U true CN214755486U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120848979.3U Active CN214755486U (en) | 2021-04-23 | 2021-04-23 | Fire control water supply control relay module |
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|---|---|
| CN (1) | CN214755486U (en) |
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2021
- 2021-04-23 CN CN202120848979.3U patent/CN214755486U/en active Active
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