Controller, concrete transport vehicle and temperature monitoring method

Abstract

The present application relates to the field of equipment control technology, and in particular to a controller, a concrete transport vehicle, and a temperature monitoring method, including: an oil temperature monitoring module, which is used to monitor in real time whether the oil temperature of the hydraulic oil tank collected exceeds a preset oil temperature threshold, and if so, to air-cool the hydraulic oil tank; a high temperature warning module, which is used to issue a high temperature warning message for the hydraulic oil tank if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time; a mixing drum speed control module, which is used to determine the displacement adjustment value at the current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjust the displacement of the driving pump based on the displacement adjustment value, thereby changing the speed of the concrete mixing drum. The present application can effectively realize the real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and can effectively improve the accuracy of the control timing for the mixing drum according to the oil temperature monitoring result.

Description

Technical Field

[0001] The present application relates to the technical field of equipment control, and in particular to a controller, a concrete transport vehicle and a temperature monitoring method. Background Art

[0002] Cement concrete mixing is widely used in industrial, agricultural, transportation, national defense, water conservancy, municipal and other construction projects, and the demand is increasing. Concrete mixing equipment is also constantly innovating and improving, and the technical level is gradually improving. Concrete mixing is divided into manual mixing and mechanical mixing. Among them, the concrete mixer truck in mechanical mixing is a special truck used to transport construction concrete; due to its appearance, it is often called a snail truck. This type of truck is equipped with a cylindrical mixing drum to carry the mixed concrete. During the transportation process, the mixing drum will always be kept rotating to ensure that the transported concrete will not solidify. In order to ensure the stable operation of the concrete mixer truck, it is necessary to monitor the relevant equipment of the mixing drum in the concrete mixer truck.

[0003] In the prior art, the method for monitoring the related equipment of the mixing drum in a concrete mixer truck is usually to collect engine speed signals, mixing drum speed signals, main oil pump displacement signals, etc. through multiple sensors, and then send the above collected signals to an intelligent controller, and analyze them through a control module to keep the engine speed within a stable range. At the same time, the real-time displacement of the main oil pump is controlled through a PID control method to achieve an adaptive energy-saving matching strategy for the engine and the main oil pump.

[0004] However, since the conventional technology controls the rotating speed of the mixing drum only by means of component rotating speed or displacement signal, it is easy to cause inaccurate control timing for the mixing drum, which in turn affects the operation stability and safety of the concrete mixer truck. Summary of the invention

[0005] The purpose of the present application is to provide a controller, a concrete transport vehicle and a temperature monitoring method, which can effectively realize real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring results.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] One aspect of the present application provides a controller, comprising:

[0008] The oil temperature monitoring module is used to monitor in real time whether the collected oil temperature of the hydraulic oil tank exceeds the preset oil temperature threshold. If so, the hydraulic oil tank is cooled by air;

[0009] A high temperature warning module, used for issuing a high temperature warning message for the hydraulic oil tank if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time;

[0010] The mixing drum speed control module is used to determine the displacement adjustment value at the current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjust the displacement of the driving pump based on the displacement adjustment value, thereby changing the speed of the concrete mixing drum.

[0011] Preferably, it also includes:

[0012] The temperature difference acquisition module is used to determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank;

[0013] The temperature compensation feedback control module is used to perform temperature compensation feedback control on the hydraulic oil tank based on the temperature difference.

[0014] Another aspect of the present application provides a concrete transport vehicle, comprising: a controller, a first temperature sensor, a second temperature sensor, a first rotation speed sensor, a second rotation speed sensor, and a displacement sensor respectively connected to the controller for communication;

[0015] The controller is the above-mentioned controller;

[0016] The first temperature sensor is arranged at the hydraulic oil tank of the concrete transport vehicle and is used to collect the oil temperature of the hydraulic oil tank;

[0017] The second temperature sensor is used to collect the ambient temperature of the concrete transport vehicle;

[0018] The first rotation speed sensor is arranged at the engine of the concrete transport vehicle and is used to collect the rotation speed of the engine;

[0019] The second rotation speed sensor is arranged at the concrete mixing drum of the concrete transport vehicle, and is used to collect the rotation speed of the concrete mixing drum;

[0020] The displacement sensor is arranged at the driving pump of the concrete transport vehicle and is used to collect the displacement of the driving pump.

[0021] A third aspect of the present application provides a temperature monitoring method, using the above-mentioned controller;

[0022] The temperature monitoring method comprises:

[0023] Real-time monitoring of whether the oil temperature of the hydraulic oil tank exceeds the preset oil temperature threshold. If so, the hydraulic oil tank is cooled by air;

[0024] If the result of the air cooling treatment does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued;

[0025] And, a displacement adjustment value at a current oil temperature of the hydraulic oil tank is determined according to the collected displacement value of the driving pump, and the displacement of the driving pump is adjusted based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0026] Preferably, it also includes:

[0027] Determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank;

[0028] And, based on the temperature difference, temperature compensation feedback control is performed on the hydraulic oil tank.

[0029] Preferably, the monitoring of whether the oil temperature of the hydraulic oil tank collected exceeds a preset oil temperature threshold value further includes:

[0030] The oil temperature of the hydraulic oil tank and the displacement of the driving pump are collected in real time.

[0031] Preferably, it also includes:

[0032] Collect engine speed value in real time;

[0033] The rotation speed of the engine is adjusted so that the displacement of the driving pump reaches the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0034] Preferably, it also includes:

[0035] Collecting the rotation speed of the concrete mixing drum in real time;

[0036] Determining a speed adjustment value of the concrete mixing drum corresponding to the displacement adjustment value according to a pre-acquired correspondence between the displacement of the driving pump and the speed of the concrete mixing drum;

[0037] The rotation speed of the concrete mixing drum is adjusted based on the rotation speed adjustment value.

[0038] Preferably, the air cooling treatment of the hydraulic oil tank comprises:

[0039] A cooling fan arranged at the hydraulic oil tank is controlled to cool the hydraulic oil tank.

[0040] Preferably, if the result of the air cooling treatment does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued, including:

[0041] If the abnormal operation information of the cooling fan is received, and / or if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time, a high temperature warning step is executed;

[0042] Wherein, the high temperature warning step includes:

[0043] The buzzer alarm is controlled to issue a high temperature warning prompt for the hydraulic oil tank, and / or the high temperature warning information for the hydraulic oil tank is sent to the combination instrument, so that the display screen of the combination instrument displays the high temperature warning information.

[0044] A third aspect of the present application provides a temperature monitoring method, the controller mentioned above;

[0045] The temperature monitoring method comprises: when the oil temperature collected by the first temperature sensor is greater than a first preset value, the controller controls the air cooling device to operate;

[0046] When the oil temperature collected by the first temperature sensor is greater than a second preset value, the controller controls the air cooling device to operate and reduces the displacement of the driving pump;

[0047] When the oil temperature collected by the first temperature sensor is greater than a third preset value, the controller controls the alarm device to sound an alarm.

[0048] Preferably, the range of the first preset value is set to 50-55°C, the range of the second preset value is set to 60-65°C, and the range of the third preset value is set to 75-78°C.

[0049] The fan shut-off temperature range is 40-42°C, and the drive pump displacement control shut-off temperature range is 50-52°C.

[0050] The technical solution provided by this application can achieve the following beneficial effects:

[0051] The controller, concrete transport vehicle and temperature monitoring method provided in the present application collect the preset oil temperature threshold of the oil temperature of the hydraulic oil tank and perform air cooling control on the hydraulic oil tank. If the air cooling control fails, a warning message is issued and the displacement of the driving pump is adjusted. The real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum can be effectively realized, and the accuracy of the control timing of the mixing drum can be effectively improved according to the oil temperature monitoring result, and the control accuracy of the rotation speed of the concrete mixing drum can be improved through triple guarantees, so as to ensure the operation stability and safety of the concrete mixer transport vehicle.

[0052] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 A schematic diagram of the interaction between the controller and the client device in an embodiment of the present application;

[0055] Figure 2 This is an example schematic diagram of a temperature monitoring system in an embodiment of the present application;

[0056] Figure 3 A schematic diagram of a temperature monitoring method in an embodiment of the present application;

[0057] Figure 4 A schematic diagram of the architecture of a controller in an application example of this application;

[0058] Figure 5 Schematic diagram of the structure of the controller in the embodiment of the present application. DETAILED DESCRIPTION

[0059] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0060] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] At present, the mixing drum of a concrete mixer truck rotates mainly by: taking power from the engine flywheel power take-off as a power source, driving the variable piston pump to rotate, sucking hydraulic oil from the oil tank and transmitting it to the plunger motor, and the plunger motor drives the reducer to rotate, thereby driving the mixing drum.

[0063] When the fan of the air-cooled radiator does not work, the oil pump rotates at a high speed, or it works overloaded for a long time, the hydraulic oil temperature will be too high. When the oil temperature exceeds a certain limit temperature, the oil pump motor will not work and will not be able to drive the mixing drum to rotate, causing the concrete in the drum to solidify.

[0064] Considering that the existing method of monitoring the related equipment of the mixing drum in the concrete mixer truck has the problem that the control timing of the mixing drum is not accurate enough, which will affect the operation stability and safety of the concrete mixer truck, the present application provides a controller, a concrete truck and a temperature monitoring method. Through real-time monitoring to determine whether the oil temperature of the hydraulic oil tank collected exceeds the preset oil temperature threshold, if so, the hydraulic oil tank is subjected to air cooling; if the result of the air cooling treatment does not meet the preset requirements, a high temperature warning information for the hydraulic oil tank is issued; and, according to the collected displacement value of the driving pump, the displacement adjustment value at the current oil temperature of the hydraulic oil tank is determined, and the displacement of the driving pump is adjusted based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixer drum, which can effectively realize the real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then can effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, thereby ensuring the operation stability and safety of the concrete mixer truck.

[0065] Based on the above content, the present application provides a controller A1, see Figure 1, the controller A1 can also be connected to the client device B1 for communication, and the controller A1 can be a single chip microcomputer. Specifically, the controller A1 monitors in real time whether the oil temperature of the hydraulic oil tank collected exceeds the preset oil temperature threshold. If so, the hydraulic oil tank is subjected to air cooling; if the result of the air cooling does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued; and, according to the collected displacement value of the driving pump, the displacement adjustment value at the current oil temperature of the hydraulic oil tank is determined, and the displacement of the driving pump is adjusted based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum. Then, the controller A1 can send both the control process parameters and the control results to the client device B1, so that the user can obtain the control process parameters and the control results of the controller A1 according to the client device B1.

[0066] It is understandable that the client device B1 may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a personal digital assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Among them, the smart wearable device may include smart glasses, a smart watch, a smart bracelet, etc.

[0067] In practical applications, the temperature monitoring part can be performed on the controller A1 side as described above, that is, Figure 1 The architecture shown in the figure can also be that all operations are completed in the client device. The specific selection can be made according to the processing capability of the client device and the restrictions of the user's usage scenario. This application does not limit this.

[0068] The client device may have a communication module (i.e., a communication unit) that can communicate with a remote controller to achieve data transmission with the controller. The controller may include a server on the task scheduling center side, and other implementation scenarios may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, or a server cluster consisting of multiple servers, or a server structure of a distributed device.

[0069] The controller and the client device may communicate using any suitable network protocol, including network protocols that have not yet been developed on the date of filing of this application. The network protocol may include, for example, TCP / IP protocol, UDP / IP protocol, HTTP protocol, HTTPS protocol, etc. Of course, the network protocol may also include, for example, RPC protocol (Remote Procedure Call Protocol) and REST protocol (Representational State Transfer) used on top of the above protocols.

[0070] Based on the above controller A1, the embodiment of the present application also provides a monitoring system for a mixer truck including the controller A1, see Figure 2 The monitoring system of the mixer truck also specifically includes a first temperature sensor W1, a second temperature sensor W2, a first speed sensor Z1, a second speed sensor Z2 and a displacement sensor P1 which are respectively connected to the controller A1 for communication. The first temperature sensor W1 is used to collect the oil temperature of the hydraulic oil tank, the second temperature sensor W2 is used to collect the ambient temperature, the first speed sensor Z1 is used to collect the speed of the engine, the second speed sensor Z2 is used to collect the speed of the concrete mixing drum, and the displacement sensor P1 is used to collect the displacement of the driving pump.

[0071] Furthermore, based on the monitoring system and controller A1 of the above-mentioned mixer truck, an embodiment of the present application also provides a concrete transport truck including a monitoring system or controller A1 of a mixer truck, wherein the first temperature sensor W1 is arranged at the hydraulic oil tank of the concrete transport truck, for collecting the oil temperature of the hydraulic oil tank, the second temperature sensor W2 is used to collect the ambient temperature of the concrete transport truck, the first speed sensor Z1 is arranged at the engine of the concrete transport truck, for collecting the speed of the engine, the second speed sensor Z2 is arranged at the concrete mixing drum of the concrete transport truck, for collecting the speed of the concrete mixing drum, and the displacement sensor P1 is arranged at the driving pump of the concrete transport truck, for collecting the displacement of the driving pump.

[0072] Based on the above content, this application mainly collects the drive pump oil temperature signal, engine speed signal, and drive pump displacement signal. When the oil temperature is close to the temperature threshold, the engine speed and drive pump displacement are controlled to achieve closed-loop feedback loop control; and, at the same time, an oil temperature high temperature alarm is added, and a prompt message is sent to the operator through a buzzer alarm or a display screen, thereby effectively realizing real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then the accuracy of the control timing for the mixing drum can be effectively improved according to the oil temperature monitoring result, thereby ensuring the operating stability and safety of the concrete mixer truck. Specific examples are described below.

[0073] In order to effectively realize the real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, the embodiment of the present application provides a temperature monitoring method in which the execution subject can be the controller A1, see Figure 3 , the temperature monitoring method specifically includes the following contents:

[0074] Step 100: Real-time monitoring is performed to determine whether the oil temperature of the hydraulic oil tank exceeds a preset oil temperature threshold. If so, the hydraulic oil tank is subjected to air cooling. The hydraulic oil tank is a drive for a concrete mixing drum.

[0075] In step 100, the monitoring interval or cycle in the real-time monitoring is preset according to specific actual needs. For example, if the current external environment is in summer with a high temperature, the monitoring interval in the real-time monitoring can be set to a shorter interval, and conversely, if the current external environment is in winter with a low temperature, the monitoring interval in the real-time monitoring can be set to a longer interval.

[0076] It is understandable that the air cooling treatment is a type of cooling method, that is, using air as a medium to cool the object to be cooled. Usually, the surface area of ​​the object to be cooled is increased, or the rate at which air flows through the object per unit time is increased, or both methods are used. The former can be achieved by adding a heat sink to the surface of the object. The heat sink is usually hung outside the object or fixed to the object to make the heat dissipation more efficient. The latter can use a fan (blower) to enhance ventilation and strengthen the cooling effect. In most cases, adding a heat sink can greatly improve the cooling efficiency.

[0077] Step 200: If the result of the air cooling process does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued.

[0078] In step 200, the preset requirements may be pre-set according to actual application scenarios, and the preset requirements may include numerical requirements or equipment operation requirements, wherein an example of a numerical requirement may be detecting whether the relevant equipment has reached a temperature threshold, and an example of an equipment operation requirement may be detecting whether the operation of the relevant equipment meets predetermined standards.

[0079] Step 300: determining a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjusting the displacement of the driving pump based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0080] From the above description, it can be seen that the temperature monitoring method provided in the embodiment of the present application, by collecting the preset oil temperature threshold of the oil temperature of the hydraulic oil tank, performs air cooling control on the hydraulic oil tank. If the air cooling control fails, a warning message is issued and the displacement of the driving pump is adjusted. It can effectively realize real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then can effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, and then improve the control accuracy of the rotation speed of the concrete mixing drum through triple guarantees, thereby ensuring the operating stability and safety of the concrete mixer truck.

[0081] In order to provide a cooling effect by directly cooling the temperature, so as to further improve the control accuracy of the rotation speed of the concrete mixing drum, in one embodiment of the present application, the temperature monitoring method further specifically includes the following contents:

[0082] Step 401: Determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank.

[0083] Step 402: Performing temperature compensation feedback control on the hydraulic oil tank based on the temperature difference.

[0084] In order to improve the accuracy and reliability of the data basis for cooling processing through real-time data collection, thereby improving the pertinence and accuracy of cooling, and further improving the control accuracy of the rotation speed of the concrete mixing drum, in one embodiment of the present application, while executing step 100, the temperature monitoring method further specifically includes the following contents:

[0085] Step 500: Collect the oil temperature of the hydraulic oil tank and the displacement of the driving pump in real time.

[0086] In addition, in order to further improve the control accuracy of the rotation speed of the concrete mixing drum by adding engine control, in one embodiment of the present application, the temperature monitoring method further specifically includes the following contents:

[0087] Step 601: Collect the engine speed value in real time.

[0088] Step 602: adjusting the rotation speed of the engine so that the displacement of the driving pump reaches the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0089] Furthermore, in order to further improve the control accuracy of the rotation speed of the concrete mixing drum by adding mixing drum control, in one embodiment of the present application, the temperature monitoring method further specifically includes the following contents:

[0090] Step 701: collecting the rotation speed of the concrete mixing drum in real time.

[0091] Step 702: Determine the speed adjustment value of the concrete mixing drum corresponding to the displacement adjustment value according to the pre-acquired correspondence between the displacement of the driving pump and the speed of the concrete mixing drum.

[0092] Step 703: adjusting the rotation speed of the concrete mixing drum based on the rotation speed adjustment value.

[0093] In order to further improve the control accuracy and reliability of the rotation speed of the concrete mixing drum, in a specific example, the specific implementation of step 100 of the temperature monitoring method is:

[0094] Step 101: Control a cooling fan disposed at the hydraulic oil tank to cool the hydraulic oil tank.

[0095] In order to further improve the control accuracy and reliability of the rotation speed of the concrete mixing drum, in a specific example, the specific implementation of step 200 of the temperature monitoring method is:

[0096] Step 201: If the abnormal operation information of the cooling fan is received, and / or if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time, a high temperature warning step 202 is executed.

[0097] Among them, the high temperature warning step 202 is: controlling the buzzer alarm to issue a high temperature warning prompt for the hydraulic oil tank, and / or sending the high temperature warning information for the hydraulic oil tank to the instrument cluster, so that the display screen of the instrument cluster displays the high temperature warning information.

[0098] Based on the above content, this application provides a specific application example of a controller to implement a temperature monitoring method, see Figure 4, by adding an oil temperature high temperature alarm device, a buzzer alarm or a display screen sends a prompt message to the operator to achieve an early warning effect. At the same time, by collecting the oil temperature signal of the driving pump, the temperature difference change value is obtained by comparing and analyzing with the ambient temperature, and a temperature compensation feedback control is formed. Then, according to the collected main oil pump displacement signal, the optimal oil pump displacement under the real-time temperature state is obtained, and the speed of the mixing drum is controlled by adjusting the oil pump displacement. Specifically, the controller includes a plurality of sensors and a control unit. The signals collected by the sensors include: hydraulic oil temperature, engine speed, main oil pump displacement signal, and mixing drum speed. According to the collected oil temperature signal, when its temperature exceeds the preset temperature value, the cooling fan is controlled to work, and the hydraulic oil temperature is cooled by air. When the cooling fan does not work or the oil temperature continues to rise, a prompt message is sent to the operator through the buzzer alarm and the combination instrument display screen, which plays a warning effect. At the same time, by real-time monitoring of the oil temperature signal, the temperature change is obtained by comparing with the environmental problem, and a temperature compensation feedback loop is formed. Then, according to the collected main oil pump displacement signal, the optimal oil pump displacement under the real-time temperature state is obtained, and the speed of the mixing drum is controlled by adjusting the oil pump displacement. Furthermore, the oil temperature of the oil pump can be monitored in real time to serve as an alarm for high oil temperature. The speed of the mixing drum can be adjusted by monitoring the changes in the oil temperature of the main oil pump. The high oil temperature alarm sends a prompt message through a buzzer or display screen to achieve a warning effect. The speed of the mixing drum can be controlled by temperature compensation.

[0099] From the software level, in order to effectively realize the real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, the embodiment of the present application also provides an embodiment of a controller for realizing all or part of the contents of the above-mentioned temperature monitoring method, see Figure 5 , the controller specifically includes the following contents:

[0100] The oil temperature monitoring module 10 is used to monitor in real time whether the collected oil temperature of the hydraulic oil tank exceeds a preset oil temperature threshold. If so, the hydraulic oil tank is subjected to air cooling.

[0101] The high temperature warning module 20 is used to issue a high temperature warning message for the hydraulic oil tank if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time.

[0102] The mixing drum speed control module 30 is used to determine a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjust the displacement of the driving pump based on the displacement adjustment value, thereby changing the speed of the concrete mixing drum.

[0103] From the above description, it can be seen that the controller provided in the embodiment of the present application performs air cooling control on the hydraulic oil tank by collecting the preset oil temperature threshold of the oil temperature of the hydraulic oil tank. If the air cooling control fails, a warning message is issued and the displacement of the driving pump is adjusted. This can effectively realize real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then can effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, and then improve the control accuracy of the rotation speed of the concrete mixing drum through triple guarantees, thereby ensuring the operating stability and safety of the concrete mixer truck.

[0104] In order to provide a cooling effect by directly cooling the temperature, so as to further improve the control accuracy of the rotation speed of the concrete mixing drum, in one embodiment of the present application, the controller further specifically includes the following contents:

[0105] The temperature difference acquisition module 41 is used to determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank;

[0106] The temperature compensation feedback control module 42 is used to perform temperature compensation feedback control on the hydraulic oil tank based on the temperature difference.

[0107] In order to improve the accuracy and reliability of the data basis for cooling processing through real-time data collection, thereby improving the pertinence and accuracy of cooling, and further improving the control accuracy of the rotation speed of the concrete mixing drum, in one embodiment of the present application, the controller further specifically includes the following contents:

[0108] The oil temperature and displacement collection module 50 is used to collect the oil temperature of the hydraulic oil tank and the displacement of the driving pump in real time.

[0109] In addition, in order to further improve the control accuracy of the rotation speed of the concrete mixing drum by adding engine control, in one embodiment of the present application, the controller further specifically includes the following contents:

[0110] The engine speed acquisition module 61 is used to acquire the engine speed value in real time.

[0111] The engine speed regulating module 62 is used to regulate the speed of the engine so that the displacement of the driving pump reaches the displacement adjustment value, thereby changing the speed of the concrete mixing drum.

[0112] Furthermore, in order to further improve the control accuracy of the rotation speed of the concrete mixing drum by adding mixing drum control, in one embodiment of the present application, the controller further specifically includes the following contents:

[0113] The mixing drum speed collection module 71 is used to collect the speed of the concrete mixing drum in real time.

[0114] The speed adjustment value acquisition module 72 is used to determine the speed adjustment value of the concrete mixing drum corresponding to the displacement adjustment value according to the pre-acquired correspondence between the displacement of the driving pump and the speed of the concrete mixing drum.

[0115] The mixing drum speed regulating module 73 is used to regulate the speed of the concrete mixing drum based on the speed adjustment value.

[0116] In order to further improve the control accuracy and reliability of the rotation speed of the concrete mixing drum, in a specific example, the specific implementation of the oil temperature monitoring module 10 of the controller is:

[0117] The temperature reduction processing unit is used to control the cooling fan arranged at the hydraulic oil tank to perform temperature reduction processing on the hydraulic oil tank.

[0118] In order to further improve the control accuracy and reliability of the rotation speed of the concrete mixing drum, in a specific example, the high temperature warning module 20 of the controller is specifically implemented as follows:

[0119] The high temperature warning module 21 is used to execute the high temperature warning step 202 if the abnormal operation information of the cooling fan is received and / or if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time.

[0120] The high temperature warning module 21 is used to control the buzzer alarm to issue a high temperature warning prompt for the hydraulic oil tank, and / or send the high temperature warning information for the hydraulic oil tank to the combination instrument so that the display screen of the combination instrument displays the high temperature warning information.

[0121] From the hardware level, the embodiment of the present application also provides a specific implementation of an electronic device that can implement all the steps in the temperature monitoring method in the above embodiment, and the electronic device specifically includes the following contents:

[0122] Processor, memory, communications interface and bus;

[0123] The processor, memory, and communication interface communicate with each other through the bus; the communication interface is used to realize information transmission between the client device B1, the controller A1, the first temperature sensor W1, the second temperature sensor W2, the first speed sensor Z1, the second speed sensor Z2, the displacement sensor P1, and other participating institutions;

[0124] The processor is used to call the computer program in the memory. When the processor executes the computer program, all the steps in the temperature monitoring method in the above embodiment are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0125] Step 100: Real-time monitoring is performed to determine whether the oil temperature of the hydraulic oil tank exceeds a preset oil temperature threshold. If so, the hydraulic oil tank is subjected to air cooling. The hydraulic oil tank is a drive for a concrete mixing drum.

[0126] Step 200: If the result of the air cooling process does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued.

[0127] Step 300: determining a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjusting the displacement of the driving pump based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0128] From the above description, it can be seen that the electronic device provided in the embodiment of the present application performs air cooling control on the hydraulic oil tank by collecting the preset oil temperature threshold of the oil temperature of the hydraulic oil tank. If the air cooling control fails, a warning message is issued and the displacement of the driving pump is adjusted. This can effectively realize real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then can effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, and then improve the control accuracy of the rotation speed of the concrete mixing drum through triple guarantees, thereby ensuring the operating stability and safety of the concrete mixer truck.

[0129] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps of the temperature monitoring method in the above embodiments. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, all the steps of the temperature monitoring method in the above embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0130] Step 100: Real-time monitoring is performed to determine whether the oil temperature of the hydraulic oil tank exceeds a preset oil temperature threshold. If so, the hydraulic oil tank is subjected to air cooling. The hydraulic oil tank is a drive for a concrete mixing drum.

[0131] Step 200: If the result of the air cooling process does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued.

[0132] Step 300: determining a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjusting the displacement of the driving pump based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

[0133] From the above description, it can be seen that the computer-readable storage medium provided in the embodiment of the present application performs air cooling control on the hydraulic oil tank by collecting the preset oil temperature threshold of the oil temperature of the hydraulic oil tank. If the air cooling control fails, a warning message is issued and the displacement of the driving pump is adjusted. This can effectively realize real-time monitoring of the oil temperature of the hydraulic oil tank of the mixing drum, and then can effectively improve the accuracy of the control timing of the mixing drum according to the oil temperature monitoring result, and then improve the control accuracy of the rotation speed of the concrete mixing drum through triple guarantees, thereby ensuring the operating stability and safety of the concrete mixer truck.

[0134] A third aspect of the present application provides a temperature monitoring method, the controller mentioned above;

[0135] The temperature monitoring method comprises: when the oil temperature collected by the first temperature sensor W1 is greater than a first preset value, the controller controls the air cooling device to operate;

[0136] When the oil temperature collected by the first temperature sensor W1 is greater than a second preset value, the controller controls the air cooling device to operate and reduces the displacement of the driving pump;

[0137] When the oil temperature collected by the first temperature sensor W1 is greater than a third preset value, the controller controls the alarm device to sound an alarm.

[0138] Preferably, the range of the first preset value is set to 50-55°C, the range of the second preset value is set to 60-65°C, and the range of the third preset value is set to 75-78°C.

[0139] The fan shut-off temperature range is 40-42°C, and the drive pump displacement control shut-off temperature range is 50-52°C.

[0140] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0141] In addition, those skilled in the art will appreciate that, although some of the above-described embodiments include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. In addition, the information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present application, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A controller, characterized in that: include: The oil temperature monitoring module is used to monitor in real time whether the oil temperature of the hydraulic oil tank exceeds the preset oil temperature threshold. If so, the hydraulic oil tank is cooled by air; Wherein, the monitoring interval or cycle of the oil temperature monitoring module is preset according to specific actual needs; If the current external ambient temperature is high, the monitoring interval of the oil temperature monitoring module is set to a shorter interval; If the current external environment temperature is low, the monitoring interval of the oil temperature monitoring module is set to a longer interval; A high temperature warning module, used for issuing a high temperature warning message for the hydraulic oil tank if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time; A mixing drum speed control module, used to determine a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjust the displacement of the driving pump based on the displacement adjustment value, thereby changing the speed of the concrete mixing drum; The temperature difference acquisition module is used to determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank; A temperature compensation feedback control module, used for performing temperature compensation feedback control on the hydraulic oil tank based on the temperature difference; The controller sends the control process parameters and control results to the client device.

2. A concrete transport vehicle, characterized in that: include: A controller, a first temperature sensor, a second temperature sensor, a first rotation speed sensor, a second rotation speed sensor, and a displacement sensor respectively connected to the controller for communication; The controller is the controller according to claim 1; The first temperature sensor is arranged at the hydraulic oil tank of the concrete transport vehicle and is used to collect the oil temperature of the hydraulic oil tank; The second temperature sensor is used to collect the ambient temperature of the concrete transport vehicle; The first rotation speed sensor is arranged at the engine of the concrete transport vehicle and is used to collect the rotation speed of the engine; The second rotation speed sensor is arranged at the concrete mixing drum of the concrete transport vehicle, and is used to collect the rotation speed of the concrete mixing drum; The displacement sensor is arranged at the driving pump of the concrete transport vehicle and is used to collect the displacement of the driving pump; The controller sends the control process parameters and control results to the client device.

3. A temperature monitoring method, using the controller as claimed in claim 1, characterized in that ； The temperature monitoring method comprises: Real-time monitoring of whether the oil temperature of the hydraulic oil tank exceeds the preset oil temperature threshold. If so, the hydraulic oil tank is cooled by air; If the result of the air cooling treatment does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued; And, determining a displacement adjustment value at a current oil temperature of the hydraulic oil tank according to the collected displacement value of the driving pump, and adjusting the displacement of the driving pump based on the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum; Determine the temperature difference between the oil temperature of the hydraulic oil tank and the current ambient temperature according to the collected oil temperature of the hydraulic oil tank; and, performing temperature compensation feedback control on the hydraulic oil tank based on the temperature difference; The controller sends the control process parameters and control results to the client device.

4. The temperature monitoring method according to claim 3, characterized in that: Whether the oil temperature of the hydraulic oil tank collected by the monitoring exceeds a preset oil temperature threshold value, the method further includes: The oil temperature of the hydraulic oil tank and the displacement of the driving pump are collected in real time.

5. The temperature monitoring method according to claim 4, characterized in that: Also includes: Collect engine speed value in real time; The rotation speed of the engine is adjusted so that the displacement of the driving pump reaches the displacement adjustment value, thereby changing the rotation speed of the concrete mixing drum.

6. The temperature monitoring method according to claim 4, characterized in that: Also includes: Collecting the rotation speed of the concrete mixing drum in real time; Determining a speed adjustment value of the concrete mixing drum corresponding to the displacement adjustment value according to a pre-acquired correspondence between the displacement of the driving pump and the speed of the concrete mixing drum; The rotation speed of the concrete mixing drum is adjusted based on the rotation speed adjustment value.

7. The temperature monitoring method according to claim 3, characterized in that: The air cooling treatment of the hydraulic oil tank comprises: Controlling a cooling fan disposed at the hydraulic oil tank to cool the hydraulic oil tank; and / or, If the result of the air cooling process does not meet the preset requirements, a high temperature warning message for the hydraulic oil tank is issued, including: If the abnormal operation information of the cooling fan is received, and / or if the oil temperature of the hydraulic oil tank is still in an elevated state within a preset time, a high temperature warning step is executed; Wherein, the high temperature warning step includes: The buzzer alarm is controlled to issue a high temperature warning prompt for the hydraulic oil tank, and / or the high temperature warning information for the hydraulic oil tank is sent to the combination instrument, so that the display screen of the combination instrument displays the high temperature warning information.

8. A temperature monitoring method, using the controller as claimed in claim 1, characterized in that ； The temperature monitoring method comprises: when the oil temperature collected by the first temperature sensor is greater than a first preset value, the controller controls the air cooling device to operate; When the oil temperature collected by the first temperature sensor is greater than a second preset value, the controller controls the air cooling device to operate and reduces the displacement of the driving pump; When the oil temperature collected by the first temperature sensor is greater than a third preset value, the controller controls the alarm device to alarm; Among them, the range of the first preset value is set to 50-55°C, the range of the second preset value is set to 60-65°C, the range of the third preset value is set to 75-78°C, the range of the fan shutdown temperature is 40-42°C, and the range of the drive pump displacement control shutdown temperature is 50-52°C.

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