CN117644573A - Precast concrete bridge maintenance system - Google Patents
Precast concrete bridge maintenance system Download PDFInfo
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- CN117644573A CN117644573A CN202311835055.XA CN202311835055A CN117644573A CN 117644573 A CN117644573 A CN 117644573A CN 202311835055 A CN202311835055 A CN 202311835055A CN 117644573 A CN117644573 A CN 117644573A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 49
- 239000011178 precast concrete Substances 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 168
- 238000005507 spraying Methods 0.000 claims abstract description 80
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 101100067427 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FUS3 gene Proteins 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 101100015484 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GPA1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Spray Control Apparatus (AREA)
Abstract
The invention relates to the technical field of buildings, and provides a precast concrete bridge maintenance system, which comprises a maintenance station, wherein the maintenance station is provided with a water spraying system, a water spraying valve is arranged on a water spraying pipeline of the water spraying system, the precast concrete bridge maintenance system further comprises a water spraying valve control circuit, the water spraying valve control circuit comprises a switching tube Q1, a first end of the switching tube Q1 is connected with a first direct current power supply, a second end of the switching tube Q1 is connected with a power supply end of a voltage stabilizing module, a control end of the switching tube Q1 is connected with a first output end of a controller, an output end of the voltage stabilizing module is used for supplying power to a coil of the water spraying valve, a first end of a resistor R1 is connected with an adjusting end of the voltage stabilizing module, a second end of the resistor R1 is connected with a first end of the switching tube Q2, and a delay circuit is used for controlling the conduction time of the switching tube Q2. Through the technical scheme, the problems of low reliability and high cost of the precast concrete bridge maintenance system in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a precast concrete bridge maintenance system.
Background
In bridge construction, precast concrete units (precast bridge units) are widely used. Because the precast concrete member is manufactured in a factory, the precast concrete member can be directly transported to the site for installation, and the construction of cast-in-place concrete is not needed on the site, so that the construction time can be greatly shortened. And secondly, the precast concrete member can also improve the quality and stability of bridge construction and prevent quality problems in site construction.
After the precast concrete member is poured, water spraying maintenance is needed for a plurality of times so as to ensure the strength and stability of the concrete. In the water spraying process, an electromagnetic valve is usually required to be used as a switching element, the working current of the electromagnetic valve in the traditional electromagnetic valve control process is large, coil heating is easily caused, the failure rate of the electromagnetic valve is increased, and meanwhile, electric energy is wasted, so that the reliability of the whole maintenance system is influenced, and the maintenance cost is increased.
Disclosure of Invention
The invention provides a precast concrete bridge maintenance system, which solves the problems of low reliability and high cost of the precast concrete bridge maintenance system in the related art.
The technical scheme of the invention is as follows: comprises a curing station, wherein the curing station is provided with a water spraying system, a water spraying valve is arranged on a water spraying pipeline of the water spraying system, the curing station also comprises a water spraying valve control circuit connected with a controller, the water spraying valve control circuit comprises a switching tube Q1, a switching tube Q2, a voltage stabilizing module, a delay circuit and a resistor R1,
the first end of the switch tube Q1 is connected with a first direct current power supply, the second end of the switch tube Q1 is connected with the power supply end of the voltage stabilizing module, the control end of the switch tube Q1 is connected with the first output end of the controller, the output end of the voltage stabilizing module is used for supplying power to the coil of the water spraying valve,
the first end of the resistor R1 is connected with the adjusting end of the voltage stabilizing module, the second end of the resistor R1 is connected with the first end of the switching tube Q2, the second end of the switching tube Q2 is grounded, and the delay circuit is used for controlling the conduction time of the switching tube Q2.
Further, the delay circuit comprises a resistor R2 and a capacitor C1, a first end of the resistor R2 is connected with a power supply end of the voltage stabilizing module, a second end of the resistor R2 is grounded through the capacitor C1, and a second end of the resistor R2 is connected to a control end of the switching tube Q2.
Further comprises a water storage tank and a liquid level detection circuit, wherein the water inlet of the water storage tank is used for being connected with a water source, a water supplementing valve is arranged on a water inlet pipeline of the water storage tank, the water outlet of the water storage tank is used for being communicated with a water spraying pipeline,
the liquid level detection circuit comprises a switch tube Q3 and a switch tube Q4, wherein the control end of the switch tube Q3 is used for being connected with a lower limit water level sensor, the first end of the switch tube Q3 is connected with a second direct current power supply through a resistor R8, the second end of the switch tube Q3 is grounded, the first end of the switch tube Q3 is connected with the first input end of the controller,
the control end of the switching tube Q4 is used for being connected with an upper limit water level sensor, the first end of the switching tube Q4 is connected with a second direct current power supply through a resistor R9, the second end of the switching tube Q4 is grounded, and the first end of the switching tube Q4 is connected with the second input end of the controller.
Further, the water spraying quantity adjusting system comprises a frequency converter, a water supply pump and an encoder for detecting the rotating speed of the water supply pump, wherein the output end of the encoder is connected with the third input end of the controller, the first analog output end of the controller is connected with the control end of the frequency converter, and the output end of the frequency converter is connected with the power supply end of the water supply pump.
Further comprises a high-pressure gas tank and a gas pressure regulating circuit, wherein the gas outlet pipeline of the high-pressure gas tank is used for being communicated with a water spraying pipeline, an electric regulating valve is arranged on the gas outlet pipeline of the high-pressure gas tank,
the gas pressure regulating circuit comprises a gas pressure detecting circuit and a voltage-current converting circuit, wherein the gas pressure detecting circuit is used for detecting the pressure at the tail end of the gas outlet pipeline, the tail end of the gas outlet pipeline is one end of the gas outlet pipeline, which is communicated with the water spraying pipeline, the output end of the gas pressure detecting circuit is connected with the fourth input end of the controller, the second analog output end of the controller is connected with the voltage-current converting circuit, and the output end of the voltage-current converting circuit is connected with the control end of the electric regulating valve.
Further, the voltage-current conversion circuit comprises an operational amplifier U8A and an operational amplifier U8B, wherein the non-inverting input end of the operational amplifier U8A is connected with the second analog output end of the controller, the inverting input end of the operational amplifier U8A is grounded through a resistor R13, the output end of the operational amplifier U8A is connected to the inverting input end of the operational amplifier U8A in a feedback manner through a resistor R14, the output end of the operational amplifier U8A is connected to the non-inverting input end of the operational amplifier U8B through a resistor R11, the output end of the operational amplifier U8B is connected to the inverting input end of the operational amplifier U8B in a feedback manner, the output end of the operational amplifier U8B is connected to the non-inverting input end of the operational amplifier U8A through a resistor R16,
and the non-inverting input end of the operational amplifier U8B is the output end of the voltage-current conversion circuit.
Further, two sides of the curing station are provided with infrared correlation pipes, the input ends of the infrared correlation pipes are connected with the second output end of the controller, and the output ends of the infrared correlation pipes are connected with the fifth input end of the controller.
Further, the maintenance station is a plurality of, and each maintenance station is provided with a water spraying system, and a controller of the plurality of water spraying systems is in communication connection with the display terminal.
The working principle and the beneficial effects of the invention are as follows:
the embodiment of the invention reduces the working current of the water spraying valve, reduces the failure rate of the water spraying valve and reduces the consumption of electric energy by improving the control circuit of the water spraying valve. The working principle is as follows: when the precast concrete bridge needs to be subjected to water spraying maintenance, a first output end of the controller outputs a control signal, the switching tube Q1 is controlled to be conducted, the voltage stabilizing module is electrified, the switching tube Q2 is cut off when the voltage stabilizing module is electrified, the regulating end of the voltage stabilizing module does not work, the output end of the voltage stabilizing module outputs rated voltage, the coil of the water spraying valve is electrified, and the water spraying valve is closed; after a period of time, the delay circuit controls the switch tube Q2 to be conducted, the resistor R1 is connected to the regulating end of the voltage stabilizing module, the voltage of the output end of the voltage stabilizing module is reduced, the output voltage at the moment can maintain the conducting state of the water spraying valve, and the current of the coil of the water spraying valve can be reduced as much as possible, so that the functions of reducing the working current of the water spraying valve and reducing the electric energy loss are achieved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a control circuit for a sprinkler valve according to the present invention;
FIG. 2 is a schematic diagram of a liquid level detection circuit according to the present invention;
FIG. 3 is a schematic diagram of a water spray amount adjusting system according to the present invention;
FIG. 4 is a schematic diagram of a gas pressure regulating circuit in accordance with the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments of the present invention, are intended to be encompassed within the scope of the present invention.
The precast concrete bridge maintenance system of the embodiment comprises a maintenance station, wherein the maintenance station is provided with a water spraying system, a water spraying valve is arranged on a water spraying pipeline of the water spraying system, the precast concrete bridge maintenance system also comprises a water spraying valve control circuit connected with a controller, the water spraying valve control circuit comprises a switching tube Q1, a switching tube Q2, a voltage stabilizing module, a delay circuit and a resistor R1,
the first end of the switch tube Q1 is connected with a first direct current power supply, the second end of the switch tube Q1 is connected with the power supply end of the voltage stabilizing module, the control end of the switch tube Q1 is connected with the first output end of the controller, the output end of the voltage stabilizing module is used for supplying power to the coil of the water spraying valve,
the first end of the resistor R1 is connected with the adjusting end of the voltage stabilizing module, the second end of the resistor R1 is connected with the first end of the switching tube Q2, the second end of the switching tube Q2 is grounded, and the delay circuit is used for controlling the conduction time of the switching tube Q2.
The embodiment of the invention reduces the working current of the water spraying valve, reduces the failure rate of the water spraying valve and reduces the consumption of electric energy by improving the control circuit of the water spraying valve. The working principle is as follows: as shown in fig. 1, when water spraying maintenance is required to be performed on a precast concrete bridge, a first output end of a controller outputs a control signal, a control switch tube Q1 is turned on, a voltage stabilizing module is turned on, when the voltage stabilizing module is just turned on, a switch tube Q2 is turned off, an adjusting end of the voltage stabilizing module does not work, an output end of the voltage stabilizing module outputs rated voltage, a coil of a water spraying valve is turned on, and the water spraying valve is closed; after a period of time, the delay circuit controls the switch tube Q2 to be conducted, the resistor R1 is connected to the regulating end of the voltage stabilizing module, the voltage of the output end of the voltage stabilizing module is reduced, the output voltage at the moment can maintain the conducting state of the water spraying valve, and the current of the coil of the water spraying valve can be reduced as much as possible, so that the functions of reducing the working current of the water spraying valve and reducing the electric energy loss are achieved.
It should be noted that, the controller may be a current general-purpose control chip such as a single chip microcomputer, a DSP, an ARM, etc., and the embodiment specifically selects a DSP chip TMS320F28335.
Further, the delay circuit comprises a resistor R2 and a capacitor C1, a first end of the resistor R2 is connected with a power supply end of the voltage stabilizing module, a second end of the resistor R2 is grounded through the capacitor C1, and a second end of the resistor R2 is connected to a control end of the switching tube Q2.
In this embodiment, when the voltage stabilizing module is just electrified, the voltage at two ends of the capacitor C1 is zero, the switching tube Q2 is turned off, the adjusting end of the voltage stabilizing module does not function, and the output end of the voltage stabilizing module outputs rated voltage; along with the charging of the capacitor C1 by the first direct current power Vin through the resistor R2, the voltage at two ends of the capacitor C1 is gradually increased, when the voltage at two ends of the capacitor C1 is larger than the conducting voltage of the switching tube Q2, the switching tube Q2 is conducted, the resistor R1 is connected to the regulating end of the voltage stabilizing module, and the voltage of the output end of the voltage stabilizing module is reduced. Thus, the delay conduction of the switching tube Q2 is realized, and the delay time can be adjusted by adjusting the sizes of the resistor R2 and the capacitor C1 according to actual needs.
Further comprises a water storage tank and a liquid level detection circuit, wherein the water inlet of the water storage tank is used for being connected with a water source, a water supplementing valve is arranged on a water inlet pipeline of the water storage tank, the water outlet of the water storage tank is used for being communicated with a water spraying pipeline,
as shown in fig. 2, the liquid level detection circuit comprises a switch tube Q3 and a switch tube Q4, wherein the control end of the switch tube Q3 is used for being connected with a lower limit water level sensor, the first end of the switch tube Q3 is connected with a second direct current power supply through a resistor R8, the second end of the switch tube Q3 is grounded, the first end of the switch tube Q3 is connected with the first input end of the controller,
the control end of the switching tube Q4 is used for being connected with an upper limit water level sensor, the first end of the switching tube Q4 is connected with a second direct current power supply through a resistor R9, the second end of the switching tube Q4 is grounded, and the first end of the switching tube Q4 is connected with the second input end of the controller.
In this embodiment, can guarantee through setting up the storage water tank that water spray system's water source is sufficient, still set up liquid level detection circuit simultaneously, when the water source is not enough in the storage water tank, the timely opening of controller control moisturizing valve supplements water in the storage water tank.
The working principle of the liquid level detection circuit is as follows: the lower limit water level sensor is arranged at the lowest water level of the water tank, the upper limit water level sensor is arranged at the highest water level of the water tank, when the water level in the water tank is reduced to be lower than the lowest water level, the lower limit water level sensor and the upper limit water level sensor both output high-level signals, the switching tube Q3 and the switching tube Q4 are cut off, the first end of the switching tube Q3 outputs high-level signals to the first input end of the controller, the first end of the switching tube Q4 outputs high-level signals to the second input end of the controller, and the controller judges that the water level in the water tank is too low according to the high levels of the first input end and the second input end and needs to open the water supplementing valve to supplement water timely. After the water supplementing valve is opened, the water level in the water tank gradually rises, when the water level rises above the upper limit water level sensor, the upper limit water level sensor and the lower limit water level sensor both output low-level signals, the switching tube Q3 and the switching tube Q4 are both conducted, the first end of the switching tube Q3 outputs the low-level signals to the first input end of the controller, the first end of the switching tube Q4 outputs the low-level signals to the second input end of the controller, and the controller judges the water level in the water tank according to the low levels of the first input end and the second input end so as to reach the upper limit value and timely closes the water supplementing valve.
Further, the water spraying quantity adjusting system comprises a frequency converter, a water supply pump and an encoder for detecting the rotating speed of the water supply pump, wherein the output end of the encoder is connected with the third input end of the controller, the first analog output end of the controller is connected with the control end of the frequency converter, and the output end of the frequency converter is connected with the power supply end of the water supply pump.
In this embodiment, to the prefabricated bridge of different models need adjust corresponding water spray, water spray adjusting system can realize the automatic adjustment of water spray, and its theory of operation is: the rotary speed of the water supply pump is detected in real time through the encoder, the rotary speed of the water supply pump is input into the controller through the encoder, the rotary speed of the water supply pump is compared with a preset target rotary speed through the controller, when the rotary speed of the water supply pump is larger than the target rotary speed, the frequency instruction data is reduced, the DAC1 channel of the DAC module is used for converting the frequency instruction data into an analog quantity instruction, the analog quantity instruction is input into the control end of the frequency converter, the frequency converter is controlled to output the voltage frequency of the power supply end of the water supply pump, namely, the rotary speed of the water supply pump is controlled through controlling the voltage frequency of the power supply end of the water supply pump, the higher the rotary speed of the water supply pump is, the higher the water spraying quantity is, the lower the rotary speed of the water spraying quantity is, and the lower the rotary speed of the water spraying quantity is controlled, so that the regulation of the water spraying quantity is realized through controlling the rotary speed of the water supply pump.
Further comprises a high-pressure gas tank and a gas pressure regulating circuit, wherein the gas outlet pipeline of the high-pressure gas tank is used for being communicated with a water spraying pipeline, an electric regulating valve is arranged on the gas outlet pipeline of the high-pressure gas tank,
the gas pressure regulating circuit comprises a gas pressure detecting circuit and a voltage-current converting circuit, wherein the gas pressure detecting circuit is used for detecting the pressure at the tail end of the gas outlet pipeline, the tail end of the gas outlet pipeline is one end of the gas outlet pipeline, which is communicated with the water spraying pipeline, the output end of the gas pressure detecting circuit is connected with the fourth input end of the controller, the second analog output end of the controller is connected with the voltage-current converting circuit, and the output end of the voltage-current converting circuit is connected with the control end of the electric regulating valve.
In this embodiment, in order to ensure the water spraying pressure during maintenance, the pressure at the end of the water spraying pipeline can be increased by the high-pressure air tank. Meanwhile, corresponding water spraying pressure is required to be adjusted for prefabricated bridges of different models, and the water spraying pressure is adjusted by the aid of the gas pressure adjusting circuit. The working principle is as follows: the gas pressure detection circuit is used for detecting the pressure at the tail end of the gas outlet pipeline, converting the pressure at the tail end of the gas outlet pipeline into an electric signal and sending the electric signal to the controller, the controller compares the pressure at the tail end of the gas outlet pipeline with a preset target pressure, when the pressure at the tail end of the gas outlet pipeline is larger than the target pressure, pressure instruction data are reduced, the pressure instruction data are converted into analog voltage instructions through a DAC2 channel of the DAC module and are input to the input end of the voltage-current conversion circuit, the voltage-current conversion circuit converts the analog voltage instructions into current instructions and inputs the current instructions to the control end of the electric regulating valve, the opening of the electric regulating valve is controlled, and the regulation of the gas pressure is realized.
Further, the voltage-current conversion circuit comprises an operational amplifier U8A and an operational amplifier U8B, wherein the non-inverting input end of the operational amplifier U8A is connected with the second analog output end of the controller, the inverting input end of the operational amplifier U8A is grounded through a resistor R13, the output end of the operational amplifier U8A is connected to the inverting input end of the operational amplifier U8A in a feedback manner through a resistor R14, the output end of the operational amplifier U8A is connected to the non-inverting input end of the operational amplifier U8B through a resistor R11, the output end of the operational amplifier U8B is connected to the inverting input end of the operational amplifier U8B in a feedback manner, the output end of the operational amplifier U8B is connected to the non-inverting input end of the operational amplifier U8A through a resistor R16,
and the non-inverting input end of the operational amplifier U8B is the output end of the voltage-current conversion circuit.
In this embodiment, the operational amplifier U8A, the resistor R14, the resistor R11, and the resistor R16 form a voltage-current conversion circuit, and the operational amplifier U8B is used as a buffer of a voltage feedback branch of the operational amplifier U8A, so that an output end of the operational amplifier U8A and the voltage feedback branch can be isolated, and when a current required by the voltage feedback branch is large, the operational amplifier U8A outputs a large current, which causes the operational amplifier U1A to generate heat, and meanwhile, mutual interference between the voltage feedback branch and the output end of the operational amplifier U8A is avoided.
The working principle of the voltage-current conversion circuit for voltage-current conversion is as follows: the output voltage of the DAC2 channel of the controller is recorded as U i The voltage of the inverting input end of the operational amplifier U8A is U - The voltage of the non-inverting input terminal is U + The voltage of the output end is U o1 U8B in-phase input end voltage of operational amplifier is U o2 Through the load R L The current of (2) is I o . According to the characteristic of 'virtual short' of operational amplifier, U + = U - . According to the characteristic of 'virtual short' of the operational amplifier,
let r13=r14=r10=r16, as can be obtained from the above formula,
i.e. output current I o Is of the magnitude and input voltage U i Proportional, voltage-to-current conversion is achieved.
Further, infrared opposite-injection pipes are arranged on two sides of the curing station, the input ends of the infrared opposite-injection pipes are connected with the second output end of the controller, and the output ends of the infrared opposite-injection pipes are connected with the fifth input end of the controller.
In this embodiment, infrared to the penetrating pipe includes infrared emission diode and infrared receiving diode, infrared emission diode sets up in the one side of maintenance station, infrared emission diode is as the input of infrared to the penetrating pipe, through the second output cycle transmission control signal of controller, control infrared emission diode sends infrared signal, when not placing prefabricated bridge on the maintenance station, the infrared signal that infrared receiving diode that is located maintenance station contralateral side sent can be received to infrared receiving diode, when placing prefabricated bridge on the maintenance station, the infrared signal that infrared receiving diode that is located maintenance station contralateral side received infrared emission diode, infrared receiving diode is as the output of infrared to the penetrating pipe, the fifth input of controller is connected. The controller can judge whether the maintenance station is empty or not by reading the signal of the fifth input end of the controller, and when the maintenance station is empty, the controller can remind workers to place other prefabricated bridges for maintenance.
Further, the maintenance station is a plurality of, and each maintenance station is provided with a water spraying system, and a controller of the plurality of water spraying systems is in communication connection with the display terminal.
In this embodiment, the controller of the plurality of water spraying systems is connected to the display terminal, so that the data of the plurality of water spraying systems can be displayed on the display terminal in real time, and the data can be conveniently checked by the staff at any time. Meanwhile, the staff can set parameters of a plurality of spraying systems through the display terminal, for example, maintenance parameters such as water spraying frequency, water spraying amount, water spraying pressure, single water spraying time, maintenance period and the like can be manually input, and a plurality of groups of maintenance parameters can be preset for the staff to select by one key according to actual needs.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The precast concrete bridge maintenance system comprises a maintenance station, wherein the maintenance station is provided with a water spraying system, a water spraying valve is arranged on a water spraying pipeline of the water spraying system, and the precast concrete bridge maintenance system is characterized by also comprising a water spraying valve control circuit connected with a controller, the water spraying valve control circuit comprises a switch tube Q1, a switch tube Q2, a voltage stabilizing module, a delay circuit and a resistor R1,
the first end of the switch tube Q1 is connected with a first direct current power supply, the second end of the switch tube Q1 is connected with the power supply end of the voltage stabilizing module, the control end of the switch tube Q1 is connected with the first output end of the controller, the output end of the voltage stabilizing module is used for supplying power to the coil of the water spraying valve,
the first end of the resistor R1 is connected with the adjusting end of the voltage stabilizing module, the second end of the resistor R1 is connected with the first end of the switching tube Q2, the second end of the switching tube Q2 is grounded, and the delay circuit is used for controlling the conduction time of the switching tube Q2.
2. The precast concrete bridge maintenance system according to claim 1, wherein the delay circuit comprises a resistor R2 and a capacitor C1, a first end of the resistor R2 is connected with a power supply end of the voltage stabilizing module, a second end of the resistor R2 is grounded through the capacitor C1, and a second end of the resistor R2 is connected to a control end of the switching tube Q2.
3. The precast concrete bridge maintenance system according to claim 1, further comprising a water storage tank and a liquid level detection circuit, wherein the water inlet of the water storage tank is used for being connected with a water source, a water supplementing valve is arranged on a water inlet pipeline of the water storage tank, the water outlet of the water storage tank is used for being communicated with a water spraying pipeline,
the liquid level detection circuit comprises a switch tube Q3 and a switch tube Q4, wherein the control end of the switch tube Q3 is used for being connected with a lower limit water level sensor, the first end of the switch tube Q3 is connected with a second direct current power supply through a resistor R8, the second end of the switch tube Q3 is grounded, the first end of the switch tube Q3 is connected with the first input end of the controller,
the control end of the switching tube Q4 is used for being connected with an upper limit water level sensor, the first end of the switching tube Q4 is connected with a second direct current power supply through a resistor R9, the second end of the switching tube Q4 is grounded, and the first end of the switching tube Q4 is connected with the second input end of the controller.
4. The precast concrete bridge maintenance system according to claim 1, further comprising a water spray amount adjusting system, wherein the water spray amount adjusting system comprises a frequency converter, a water supply pump and an encoder for detecting the rotation speed of the water supply pump, an output end of the encoder is connected to a third input end of the controller, a first analog output end of the controller is connected to a control end of the frequency converter, and an output end of the frequency converter is connected to a power supply end of the water supply pump.
5. The precast concrete bridge maintenance system according to claim 1, further comprising a high-pressure gas tank and a gas pressure regulating circuit, wherein the gas outlet pipeline of the high-pressure gas tank is used for communicating with a water spraying pipeline, and an electric regulating valve is arranged on the gas outlet pipeline of the high-pressure gas tank,
the gas pressure regulating circuit comprises a gas pressure detecting circuit and a voltage-current converting circuit, wherein the gas pressure detecting circuit is used for detecting the pressure at the tail end of the gas outlet pipeline, the tail end of the gas outlet pipeline is one end of the gas outlet pipeline, which is communicated with the water spraying pipeline, the output end of the gas pressure detecting circuit is connected with the fourth input end of the controller, the second analog output end of the controller is connected with the voltage-current converting circuit, and the output end of the voltage-current converting circuit is connected with the control end of the electric regulating valve.
6. The precast concrete bridge maintenance system according to claim 5, wherein the voltage-current conversion circuit comprises an operational amplifier U8A and an operational amplifier U8B, wherein the non-inverting input terminal of the operational amplifier U8A is connected with the second analog output terminal of the controller, the inverting input terminal of the operational amplifier U8A is grounded through a resistor R13, the output terminal of the operational amplifier U8A is connected with the inverting input terminal of the operational amplifier U8A in a feedback manner through a resistor R14, the output terminal of the operational amplifier U8A is connected with the non-inverting input terminal of the operational amplifier U8B through a resistor R11, the output terminal of the operational amplifier U8B is connected with the inverting input terminal of the operational amplifier U8B in a feedback manner, the output terminal of the operational amplifier U8B is connected with the non-inverting input terminal of the operational amplifier U8A through a resistor R16,
and the non-inverting input end of the operational amplifier U8B is the output end of the voltage-current conversion circuit.
7. The precast concrete bridge maintenance system according to claim 1, wherein infrared correlation pipes are arranged on two sides of the maintenance station, an input end of each infrared correlation pipe is connected with a second output end of the controller, and an output end of each infrared correlation pipe is connected with a fifth input end of the controller.
8. The precast concrete bridge maintenance system according to claim 1, wherein the plurality of maintenance stations are provided, each maintenance station is provided with a water spraying system, and the controllers of the plurality of water spraying systems are in communication connection with the display terminal.
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| CN202311835055.XA CN117644573A (en) | 2023-12-28 | 2023-12-28 | Precast concrete bridge maintenance system |
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| CN202311835055.XA CN117644573A (en) | 2023-12-28 | 2023-12-28 | Precast concrete bridge maintenance system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5251153A (en) * | 1988-09-28 | 1993-10-05 | Solatrol, Inc. | Flexibly programmable irrigation system controller |
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2023
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| US5251153A (en) * | 1988-09-28 | 1993-10-05 | Solatrol, Inc. | Flexibly programmable irrigation system controller |
| CN106738264A (en) * | 2016-11-09 | 2017-05-31 | 中铁三局集团有限公司 | The intelligent spray maintenance process of concrete prefabricated bridge |
| CN206941416U (en) * | 2017-07-19 | 2018-01-30 | 中铁十二局集团有限公司 | A kind of road and bridge high pier automatic concrete spraying curing system |
| CN211362805U (en) * | 2019-11-19 | 2020-08-28 | 浙江陆德和交通科技有限公司 | Precast beam slab maintenance device for highway bridge engineering |
| CN112405807A (en) * | 2020-11-18 | 2021-02-26 | 张泽军 | Road and bridge concrete precast beam curing means |
| US20220275963A1 (en) * | 2021-02-26 | 2022-09-01 | Johnson Controls Technology Company | Flowrate determination system and method for a flow control valve |
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| CN115686113A (en) * | 2022-11-08 | 2023-02-03 | 瑞森新建筑有限公司 | Intelligent concrete curing equipment |
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