Automatic control device for vehicle cleaning
By using the radio signal perception unit and the automatic chronograph control unit in the automatic control system of the vehicle cleaning control system, the intermediate relay is canceled, and the relay protection circuit and the water pump control circuit breaker is introduced. The problems of frequent movement and complex wiring have achieved higher control sensitivity, stability and maintenance convenience.
Patent Information
- Application Number
- CN202421311608.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In the traditional automatic flush control circuit, there are problems such as insensitive collectors, frequent erroneous movements, high usage of intermediate relays, complex wiring, and easy to cause equipment failure due to false connections.
Use the passive -induction close -to -switch to replace the magnetic induction of the radio signal perception unit, use the automatic chronograph control unit to replace the time relay, cancel the intermediate relay, simplify the wiring, and introduce relay protection circuits and water pump control circuit breakers to improve system stability and system stability and system stability and system stability and the stability of the system and Safety.
The trigger sensitivity of automatic control of vehicle cleaning is improved, the rejection of misunderstanding is reduced, the wiring is simplified, the equipment failure is reduced, the control efficiency is improved, and the maintenance cost is reduced.
Smart Images
Figure CN222415177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automatic control and is an automatic control device for washing a vehicle. Background Art
[0002] According to environmental protection requirements, coal transport vehicles in the raw material system of coal chemical enterprises need to pass through a car washing platform after unloading coal. An automatic flushing control circuit is set in the car washing platform. The circuit includes a contact collector, an intermediate relay, a time relay, a contactor, a water pump and a power supply device. When the front of the vehicle entering the car washing platform touches the contact collector, the automatic flushing control circuit is turned on and the water spray device starts. When the rear of the vehicle touches the contact collector, the water spray device stops running. The cleaning cycle time of a single vehicle is 45 seconds, and sensitive triggering is required. The time periods for the front, body and rear of the vehicle entering and exiting the washing platform correspond to the length of the car washing platform, the vehicle speed and the pressure of the water spray device.
[0003] The traditional automatic flushing control loop has the following problems when used for a long time:
[0004] 1. The collector is not sensitive. The contact collector currently used is a passive proximity switch, which only controls the closed state of the switch through magnetic induction. When used for a long time and soaked in water, the internal magnetic force of the switch will decay, which will affect the closing control. It is easily affected by external factors such as vehicle material and driver level, resulting in insensitive control triggering.
[0005] 2. False operation and refusal to operate are frequent. According to the process requirements, the automatic water sprinkler has a fixed water spraying time, so a time relay is required. When there are fewer vehicles, the control system is relatively stable. However, in the coal storage season, the vehicle density is high and the time relay operates frequently, false operation and refusal to operate often occur, affecting its use.
[0006] 3. A large number of intermediate relays are used. The traditional automatic flushing control circuit triggers the signal through the collector, and then transmits the signal to the time relay and contactor through the intermediate relay. The process is relatively complicated and requires the use of 10 intermediate relays. The wiring is complicated, there are many hard-wired intermediate points, and there are many equipment failures due to false connections.
[0007] 4. Use integrated circuit boards. The traditional automatic flushing control circuit uses integrated circuit boards. The first function of the circuit board is to provide 24V power for the proximity switch, and the second function is a countdown device. The device is not easily replaceable and is easily constrained by the singleness of spare parts after damage, and needs to be replaced as a whole. Summary of the invention
[0008] The utility model provides a vehicle washing automatic control device, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problems of large number of intermediate relays used, complicated wiring and many equipment failures caused by false connection in the existing traditional automatic washing control circuit.
[0009] The technical solution of the utility model is achieved by the following measures: a vehicle washing automatic control device, including a switching power supply, a power supply, a current relay, at least one contactor, a beam signal sensing unit for monitoring whether a vehicle enters and leaves, and a control unit capable of automatic timing, wherein the number of contactors is the same as the number of water pumps of a spray device;
[0010] The power supply is connected to the switch power supply, and the switch power supply is respectively connected to the opposite-radiation signal sensing unit, the control unit and the current relay coil;
[0011] The power supply is connected to the normally open contact of the current relay, the normally open contact of the current relay is connected to each contactor coil, and each contactor coil is connected to the power supply;
[0012] Each normally open contact of the contactor is connected to the power supply.
[0013] The following are further optimizations and / or improvements to the above utility model technical solution:
[0014] The above also includes a relay protection circuit, which includes at least one thermal relay and an indicator light. The number of thermal relays is consistent with the number of contactors and corresponds one to one. The thermal element of each thermal relay is connected to the corresponding contactor coil. The normally open thermal contact of each thermal relay is respectively connected to the power supply and the indicator light. The indicator light is connected to the power supply. The normally closed thermal contact of each thermal relay is connected in series between the normally open contact of the current relay and each contactor coil.
[0015] The above also includes at least one water pump control circuit breaker, the number of which is the same as the number of water pumps in the sprinkler device, and each water pump control circuit breaker is connected between the power supply and the normally open contact of the corresponding contactor.
[0016] The above also includes a power switch and a spray master control switch. The power switch is connected between the power supply and the switching power supply, and the spray master control switch is connected between the power supply and the normally open contacts of each contactor.
[0017] The above-mentioned opposed-beam signal sensing unit includes a first group of opposed-beam signal sensing modules and a second group of opposed-beam signal sensing modules, and the first group of opposed-beam signal sensing modules and the second group of opposed-beam signal sensing modules are respectively connected to the switching power supply and the control unit.
[0018] The above control unit is a Siemens S7-200smart programmable controller.
[0019] The utility model has a reasonable and compact structure and is easy to use. It uses a beaming signal sensing unit to sense whether a vehicle enters and leaves. Compared with the existing passive proximity switch using magnetic induction, the sensing stability is higher and it is not easily affected by external factors such as water infiltration or touch force. It is more conducive to the stable execution of automatic control of vehicle washing. The control unit that can automatically time the spray is used for spray control, so that there is no need for an external time relay, and thus the problem of automatic spray malfunction and refusal to operate will not be reduced due to frequent operation of the time relay. Furthermore, the device introduces a control unit without the need for an intermediate relay, which simplifies the wiring complexity, reduces equipment failures caused by virtual connection, and improves the efficiency of automatic control of vehicle washing. In addition, the circuit structure of the device is different from that of an integrated circuit board, and can be replaced separately when a circuit component is damaged, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Attached Figure 1 This is a schematic diagram of a part of the circuit structure of the water pump control of the spray device in the utility model.
[0021] Attached Figure 2 This is another circuit diagram of the water pump control of the sprinkler device in the utility model.
[0022] Attached Figure 3 It is a schematic diagram of the circuit structure of the Chinese control and power supply part of the utility model.
[0023] The codes in the accompanying drawings are: D1 is the power supply, D2 is the switching power supply, C is the control unit, KA is the current relay coil, KA1 is the normally open contact of the current relay, M1 is the first spray device water pump, KM1 is the first contactor coil, KM2 is the second contactor coil, KM3 is the third contactor coil, M2 is the first spray device water pump, M3 is the first spray device water pump, KM11 is the first contactor normally open contact, KM21 is the second contactor normally open contact, KM31 is the third contactor normally open contact, HR is the indicator light, FR1 is the thermal element of the first thermal relay, FR2 is the thermal element of the second thermal relay, FR3 is The thermal element of the third thermal relay, FR12 is the normally open thermal contact of the first thermal relay, FR22 is the normally open thermal contact of the second thermal relay, FR32 is the normally open thermal contact of the second thermal relay, FR11 is the normally closed thermal contact of the first thermal relay, FR21 is the normally closed thermal contact of the second thermal relay, FR31 is the normally closed thermal contact of the second thermal relay, QF11 is the first water pump control circuit breaker, QF12 is the second water pump control circuit breaker, QF13 is the third water pump control circuit breaker, QF3 is the power supply switch, QF2 is the spray master control switch, K1 is the first group of opposing signal sensing modules, and K2 is the second group of opposing signal sensing modules. DETAILED DESCRIPTION
[0024] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.
[0025] The present invention is further described below in conjunction with the embodiments and drawings:
[0026] Embodiment 1, as attached Figure 1 , 2 As shown in , 3, the embodiment of the utility model discloses a vehicle washing automatic control device, including a switching power supply D2, a power supply D1, a current relay, at least one contactor, a beam signal sensing unit for monitoring whether a vehicle enters and leaves, and a control unit C capable of automatic timing, wherein the number of contactors is the same as the number of water pumps of the spray device;
[0027] The power supply D1 is connected to the switch power supply D2, and the switch power supply D2 is respectively connected to the opposite-radiation signal sensing unit, the control unit C and the current relay coil KA;
[0028] The power supply D1 is connected to the normally open contact KA1 of the current relay, the normally open contact KA1 of the current relay is connected to each contactor coil KM1, and each contactor coil KM1 is connected to the power supply D2;
[0029] Each contactor normally open contact KM11 is connected to the power supply D2.
[0030] In the above embodiment, the reflected signal sensing unit is used to sense whether the vehicle enters and leaves, and can be composed of an existing well-known three-wire NPN type reflected photoelectric proximity switch. Compared with the existing passive proximity switch using magnetic induction, the sensing stability is higher and it is not easily affected by external factors such as water infiltration or touch force, which is more conducive to the stable execution of vehicle cleaning automatic control.
[0031] In the above embodiment, the control unit can be a Siemens S7-200smart programmable controller, which has a T61 timing module and M0.0-0.7, 1.0-1.7 internal relays, which can automatically control the spraying time of the spray device without the need for an external time relay, thereby reducing the problem of false operation and refusal of automatic spraying due to frequent operation of the time relay.
[0032] In the above embodiment, the number of contactors is the same as the number of water pumps of the spray device, and the contactors control the water pumps of the spray device in a one-to-one manner. The specific data can be set according to actual application requirements.
[0033] For example, Figure 2 , 3As shown, a first contactor, a second contactor, and a third contactor are provided, and the first spray device water pump M1, the first spray device water pump M2, and the first spray device water pump M3 are controlled accordingly, the first contactor normally open contact KM11, the second contactor normally open contact KM21, and the third contactor normally open contact KM31. The automatic control process of this example is as follows:
[0034] (1) When a vehicle enters the car wash area, the vehicle triggers the infrared radiation generated by the beam-type signal sensing unit, and the beam-type signal sensing unit outputs a high-level signal;
[0035] (2) The control unit C receives the vehicle entry high-level signal and controls the first contactor coil KM1, the second contactor coil KM2, and the third contactor coil KM3 to be energized, so that the first contactor normally open contact KM11, the second contactor normally open contact KM21, and the third contactor normally open contact KM31 are all closed, thereby starting the first spray device water pump M1, the first spray device water pump M2, and the first spray device water pump M3 at the same time to perform the spraying action. At the same time, the control unit C performs the spraying timing;
[0036] (3) When the spray timing reaches the threshold or the opposing signal sensing unit outputs a low-level signal, the control unit C controls the first contactor coil KM1, the second contactor coil KM2, and the third contactor coil KM3 to lose power and stop the spraying action. If the spray timing reaches the threshold but the opposing signal sensing unit still outputs a high-level signal, the control unit C will control the first contactor coil KM1, the second contactor coil KM2, and the third contactor coil KM3 to be energized again to perform the spraying action, and again determine whether the spray timing reaches the threshold or whether the opposing signal sensing unit outputs a low-level signal.
[0037] Based on the circuit structure of the embodiment of the utility model, the embodiment uses a counter-radio signal sensing unit to sense and monitor whether the vehicle enters and leaves. Compared with the existing passive proximity switch using magnetic induction, the sensing stability is higher and it is not easily affected by external factors such as water infiltration or touch force. It is more conducive to the stable execution of automatic control of vehicle washing. The spray control is performed by using a control unit that can automatically time, so that there is no need for an external time relay, and thus the problem of automatic spray malfunction and refusal to operate will not be reduced due to frequent operation of the time relay. Furthermore, the control unit introduced in the embodiment does not need to use an intermediate relay, which simplifies the wiring complexity, reduces equipment failures caused by virtual connection, and improves the efficiency of automatic control of vehicle washing. In addition, the circuit structure of the embodiment is different from the integrated circuit board, and can be replaced separately when a circuit component is damaged, thereby reducing maintenance costs.
[0038] Embodiment 2, as attached Figure 1 , 2As shown in , 3, the embodiment of the utility model discloses a vehicle washing automatic control device, which is a further optimization of the above embodiment, and also includes a relay protection circuit. The relay protection circuit includes at least one thermal relay and an indicator light HR. The number of thermal relays is consistent with that of contactors and corresponds one to one. The thermal element FR1 of each thermal relay is connected to the corresponding contactor coil KM1. The normally open thermal contact FR12 of each thermal relay is respectively connected to the power supply D1 and the indicator light HR. The indicator light HR is connected to the power supply D1. The normally closed thermal contact FR12 of each thermal relay is connected in series between the normally open contact KA1 of the current relay and each contactor coil KM1.
[0039] In the above embodiment, a relay protection circuit is provided, which includes at least one thermal relay and an indicator light L. The number of thermal relays is consistent with that of the contactors and corresponds one to one. The use of thermal relays can protect the vehicle washing automatic control device and avoid damage to the device caused by excessive current.
[0040] For example, Figure 2 , 3 As shown, there are three thermal relays, which are respectively connected to the first thermal relay, the second thermal relay, and the third thermal relay. The protection process of the corresponding relay protection circuit includes:
[0041] (1) If the current is too large, the internal actuators of the thermal element FR1 of the first thermal relay, the thermal element FR2 of the second thermal relay, and the thermal element FR3 of the third thermal relay will jump, so that the normally open thermal contact FR12 of the first thermal relay, the normally open thermal contact FR22 of the second thermal relay, and the normally open thermal contact FR32 of the second thermal relay will close, and the indicator light HR will light up to prompt the staff. The normally closed thermal contact FR11 of the first thermal relay, the normally closed thermal contact FR21 of the second thermal relay, and the normally closed thermal contact FR31 of the second thermal relay will open, thereby disconnecting the spray control circuit, stopping the spraying action, and waiting for the staff to check.
[0042] Embodiment 3, as attached Figure 1 , 2 As shown in , 3, an embodiment of the utility model discloses an automatic control device for vehicle washing, which is a further optimization of the above embodiment, and also includes at least one water pump control circuit breaker QF11. The number of water pump control circuit breakers QF11 is the same as the number of water pumps of the spray device. Each water pump control circuit breaker QF11 is connected between the power supply D1 and the corresponding normally open contact KM1 of the contactor.
[0043] The provision of the water pump control circuit breaker QF11 can increase the control safety of the device and avoid the occurrence of false operation.
[0044] Embodiment 4, as attached Figure 1 , 2As shown in , 3, the embodiment of the utility model discloses a vehicle washing automatic control device, which is a further optimization of the above embodiment, and also includes a power switch QF3 and a spray master control switch QF2. The power switch QF3 is connected between the power supply D1 and the switching power supply D2, and the spray master control switch QF2 is connected between the power supply D1 and the normally open contacts KM1 of each contactor.
[0045] The use of the power supply switch QF3 and the spray master control switch QF2 can improve the safety of the vehicle washing automatic control device.
[0046] Embodiment 5, as attached Figure 1 , 2 As shown in Figures 3 and 3, an embodiment of the utility model discloses an automatic control device for vehicle washing, which is a further optimization of the above-mentioned embodiment, wherein the opposed-beam signal sensing unit includes a first group of opposed-beam signal sensing modules K1 and a second group of opposed-beam signal sensing modules K2, and the first group of opposed-beam signal sensing modules K1 and the second group of opposed-beam signal sensing modules K2 are respectively connected to the switching power supply D2 and the control unit C.
[0047] The first group of opposite-beam signal sensing modules K1 and the second group of opposite-beam signal sensing modules K2 are respectively arranged at the end of the car washing area to determine whether a vehicle enters the car washing area or leaves the car washing area.
[0048] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.
Claims
1. A vehicle washing automatic control device, characterized in that: It includes a switching power supply, a power supply, a current relay, at least one contactor, a beam signal sensing unit for monitoring whether a vehicle enters and leaves, and a control unit capable of automatic timing, wherein the number of contactors is the same as the number of water pumps of the sprinkler device; The power supply is connected to the switch power supply, and the switch power supply is respectively connected to the opposite-radiation signal sensing unit, the control unit and the current relay coil; The power supply is connected to the normally open contact of the current relay, the normally open contact of the current relay is connected to each contactor coil, and each contactor coil is connected to the power supply; Each normally open contact of the contactor is connected to the power supply.
2. The vehicle washing automatic control device according to claim 1, characterized in that: It also includes a relay protection circuit, which includes at least one thermal relay and an indicator light. The number of thermal relays is consistent with that of contactors and corresponds one to one. The thermal element of each thermal relay is connected to the corresponding contactor coil. The normally open thermal contact of each thermal relay is respectively connected to the power supply and the indicator light. The indicator light is connected to the power supply. The normally closed thermal contact of each thermal relay is connected in series between the normally open contact of the current relay and each contactor coil.
3. The vehicle washing automatic control device according to claim 1 or 2, characterized in that: It also includes at least one water pump control circuit breaker, the number of which is the same as the number of water pumps of the spray device, and each water pump control circuit breaker is connected between a power supply and a normally open contact of a corresponding contactor.
4. The vehicle washing automatic control device according to claim 1 or 2, characterized in that: It also includes a power switch and a spray master control switch. The power switch is connected between the power supply and the switching power supply, and the spray master control switch is connected between the power supply and the normally open contacts of each contactor.
5. The vehicle washing automatic control device according to claim 3, characterized in that: It also includes a power switch and a spray master control switch. The power switch is connected between the power supply and the switching power supply, and the spray master control switch is connected between the power supply and the normally open contacts of each contactor.
6. The vehicle washing automatic control device according to claim 1, 2 or 5, characterized in that: The opposed-beam signal sensing unit comprises a first group of opposed-beam signal sensing modules and a second group of opposed-beam signal sensing modules, and the first group of opposed-beam signal sensing modules and the second group of opposed-beam signal sensing modules are respectively connected to the switching power supply and the control unit.
7. The vehicle washing automatic control device according to claim 3, characterized in that: The opposed-beam signal sensing unit comprises a first group of opposed-beam signal sensing modules and a second group of opposed-beam signal sensing modules, and the first group of opposed-beam signal sensing modules and the second group of opposed-beam signal sensing modules are respectively connected to the switching power supply and the control unit.
8. The vehicle washing automatic control device according to claim 4, characterized in that: The opposed-beam signal sensing unit comprises a first group of opposed-beam signal sensing modules and a second group of opposed-beam signal sensing modules, and the first group of opposed-beam signal sensing modules and the second group of opposed-beam signal sensing modules are respectively connected to the switching power supply and the control unit.
9. The vehicle washing automatic control device according to claim 1 or 2 or 5 or 7 or 8, characterized in that: The control unit is a Siemens S7-200smart programmable controller.