Vehicle anti-fogging control method and related equipment

Abstract

The invention discloses a vehicle anti-fogging control method and related equipment, and belongs to the technical field of vehicle control. The method comprises the steps that the temperature outside a vehicle is obtained; on the basis of a comparison result of the temperature outside the vehicle and a preset temperature threshold value, a corresponding vehicle anti-fogging control strategy is executed, so that an air conditioner of the vehicle is controlled, and the air conditioner conducts defogging on window glass of the vehicle; the vehicle anti-fogging control strategy comprises a first control strategy and a second control strategy, and the first control strategy determines a control instruction according to a comparison result of a vehicle power mode, in-vehicle humidity and rainfall signals and preset data in combination with a fogging risk level corresponding to the number of passengers; according to the second control strategy, a control instruction is determined by utilizing the temperature difference value between the glass temperature and the dew point temperature and combining the automatic demisting sensitivity. By controlling the temperature and humidity of the glass in the vehicle, the interior of the vehicle does not have fogging conditions, the fogging probability can be greatly reduced, and fogging in the vehicle is prevented; the problem that demisting of an existing vehicle is not timely is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and in particular to a vehicle anti-fogging control method and related equipment. Background Art

[0002] The statements in this section merely mention background art related to the present invention and do not necessarily constitute prior art.

[0003] When driving a car, the glass must maintain a certain clarity, otherwise it will affect driving safety; once the glass is fogged, it will seriously affect the driving vision and cause safety hazards during driving. Therefore, the glass needs to be defogged in time.

[0004] Generally speaking, if the vehicle is not equipped with relevant sensors to detect fogging, the driver needs to manually operate the air conditioner front defrost button to defog after the glass fogs up. This will affect the driver's driving concentration and depends on the driver's driving experience, which also poses a safety risk.

[0005] Vehicles equipped with relevant sensors calculate the probability of fogging based on the information collected by humidity, glass, and dew point temperature sensors, and take defog measures to trigger automatic defogger when fog is about to occur / has already occurred. However, the sensor data cannot accurately feedback the probability of fogging, or the fogging threshold is set unreasonably, resulting in frequent defogger responses or untimely defoggering, or automatic defoggering not occurring due to fog that affects driving safety, which affects the user experience and leads to user complaints. Summary of the invention

[0006] In order to address the deficiencies of the prior art, the present invention provides a vehicle anti-fogging control method, system, electronic device, computer-readable storage medium and computer program product, which achieves an anti-fogging effect by controlling the glass temperature and humidity inside the vehicle so that the vehicle does not have fogging conditions.

[0007] In a first aspect, the present invention provides a vehicle anti-fogging control method;

[0008] A vehicle anti-fogging control method, comprising:

[0009] Responsive to the vehicle and the activation state of the automatic defog function, obtaining an outside temperature of the vehicle;

[0010] Based on the comparison result between the vehicle outside temperature and the preset temperature threshold, executing a corresponding vehicle anti-fogging control strategy to control the air conditioner of the vehicle so that the air conditioner defogs the window glass of the vehicle;

[0011] Among them, the vehicle anti-fog control strategy includes a first control strategy based on the vehicle state and a second control strategy based on the temperature difference. The first control strategy determines the control command by comparing the vehicle power mode, the in-vehicle humidity, and the rain signal with preset data, and combining the fogging risk level corresponding to the number of passengers. The second control strategy determines the control command by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity.

[0012] In some embodiments, the execution of the vehicle anti-fog control strategy based on the comparison result of the outside vehicle temperature and the preset temperature threshold is specifically as follows: If the outside vehicle temperature is less than the preset temperature threshold, the first control strategy is executed. If the outside vehicle temperature is greater than or equal to the preset temperature threshold, the second control strategy is executed.

[0013] In some embodiments, the determination of the control command by comparing the vehicle power mode, the in-vehicle humidity with the preset data, and combining the fogging risk level corresponding to the number of passengers includes:

[0014] If the vehicle power mode is the first mode and the in-vehicle humidity is not less than the preset first humidity threshold, a first air-conditioning control command is issued to make the air conditioner switch to the non-full internal circulation mode.

[0015] If the vehicle power mode is the second mode, the in-vehicle humidity is not less than the preset second humidity threshold, the obtained passenger occupancy signal or rain signal is the first signal value, and the passenger occupancy signal is obtained, the number of passengers is used to determine the fogging risk level and the corresponding air-conditioning control command is executed.

[0016] In some embodiments, the fogging risk level corresponding to the number of passengers is specifically as follows: If the number of passengers is greater than the preset first number threshold and less than the preset second number threshold, the fogging risk level is the first level. If the number of passengers is greater than the preset third number threshold and less than the preset fourth number threshold, the fogging risk level is the second level.

[0017] In some embodiments, the first control strategy further includes: If the air-conditioning state is the on state, the rain signal is the first signal value, or the in-vehicle humidity is not less than the preset second humidity threshold, a second air-conditioning control command is issued to make the air conditioner execute the window-blowing mode and the dehumidification mode.

[0018] In some embodiments, the determination of the control command by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity includes:

[0019] If the temperature difference is greater than the preset threshold, the corresponding control command is executed according to the in-vehicle humidity.

[0020] If the temperature difference is less than or equal to the preset threshold, the corresponding air-conditioning control instruction is determined according to the fogging risk level, the air-conditioning state, and the automatic defogging sensitivity.

[0021] In a second aspect, the present invention provides a vehicle anti-fogging control system;

[0022] A vehicle anti-fogging control system includes:

[0023] A monitoring module configured to: in response to the on state of the vehicle and the automatic defogging function, obtain the outside temperature of the vehicle;

[0024] An anti-fogging control module configured to: based on the comparison result between the outside temperature and the preset temperature threshold, execute the corresponding vehicle anti-fogging control strategy to control the air conditioner of the vehicle so that the air conditioner defogs the window glass of the vehicle;

[0025] Wherein, the vehicle anti-fogging control strategy includes a first control strategy based on the vehicle state and a second control strategy based on the temperature difference. The first control strategy determines the control instruction by comparing the vehicle power supply mode, the indoor humidity, and the rain signal with the preset data and combining the fogging risk level corresponding to the number of passengers; the second control strategy determines the control instruction by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity.

[0026] In a third aspect, the present invention provides an electronic device;

[0027] An electronic device includes a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the above vehicle anti-fogging control method.

[0028] In a fourth aspect, the present invention provides a computer-readable storage medium;

[0029] A computer-readable storage medium stores a computer program / instructions, and when the computer program / instructions are executed by a processor, the steps of the above vehicle anti-fogging control method are implemented.

[0030] In a fifth aspect, the present invention provides a computer program product;

[0031] A computer program product includes a computer program / instructions, and when the computer program / instructions are executed by a processor, the steps of the above vehicle anti-fogging control method are implemented.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] The technical solution provided by the present invention is that after locking the vehicle, if the humidity inside the vehicle is relatively high, the air conditioner switches to non-full internal circulation for ventilation to keep the temperature and humidity inside and outside the vehicle consistent and reduce the risk of fogging when getting in the car. Before driving, if the remote air conditioner is turned on and it is recognized that the humidity inside the vehicle is relatively high, the car glass is preheated / pre-cooled in advance. At the same time, the seat occupancy signal is added to identify the number of passengers, and the glass temperature is controlled in advance. The humidity inside the vehicle is monitored in real time, and the compressor is turned on to control the humidity inside the vehicle. As a result, the conditions for fogging inside the vehicle are not met, achieving the effect of anti-fogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0035] Figure 1 It is a schematic flowchart of the first control strategy in the vehicle anti-fog control method provided by an embodiment of the present invention;

[0036] Figure 2 It is a schematic flowchart of the second control strategy in the vehicle anti-fog control method provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0039] In the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0040] Embodiment 1

[0041] Most of the existing defogging methods take defogging measures when fogging is about to occur or has already occurred based on the sensor information collected, which may lead to defogging delay or frequent defogging responses due to sensor sensitivity, affecting the user experience. Therefore, the present invention provides a vehicle anti-fog control method.

[0042] Next, in combination with Figure 1 , a vehicle anti-fogging control method disclosed in this embodiment will be described in detail. The vehicle anti-fogging control method includes the following steps:

[0043] S1. Determine the power state of the vehicle, the setting state of the automatic defogging function, and the state of the humidity sensor, and judge whether the power state is off, whether the setting state of the automatic defogging function is off, and whether the humidity sensor is faulty; if the power state is off, the setting state of the automatic defogging function is off, and the humidity sensor is faulty, the fogging risk level is 0, and the air conditioner maintains the current state; if the power state is ON, the setting state of the automatic defogging function is ON, and the humidity sensor is in good condition, then execute S2.

[0044] S2. Determine the outside temperature of the vehicle, and judge whether the outside temperature is less than a preset temperature threshold. If so, execute S3; if not, execute S6.

[0045] In this embodiment, the preset temperature threshold is 20°C.

[0046] S3. If the vehicle power mode is the first mode and the humidity inside the vehicle is not less than a preset first humidity threshold, then issue a first air conditioner control instruction to make the air conditioner switch to a non-full internal circulation mode.

[0047] In this embodiment, the first mode is that the vehicle power mode changes from comfort to off, and the first humidity threshold is 70%. Specifically, if the vehicle power mode switches from comfort to off and the humidity inside the vehicle ≥ 70%, then issue a control instruction to switch the air conditioner circulation to non-full internal circulation, so that the temperature and humidity inside and outside the vehicle are kept consistent.

[0048] S4. If the air conditioner state is the on state, the rain amount signal is the first signal value or the humidity inside the vehicle is not less than a preset second humidity threshold, then issue a second air conditioner control instruction to make the air conditioner execute the window blowing mode and the dehumidification mode.

[0049] Here, the first signal value is 1, indicating that there is rain; the second humidity threshold is 75%; specifically, if the remote air conditioner is turned on, the rain amount signal feedbacks that there is rain or the humidity inside the vehicle ≥ 75%, it is judged that there is a fogging risk, and an air conditioner control instruction is issued to make the air conditioner mode associated with window blowing, preheat / pre-cool the glass in advance; and turn on the compressor to enter the dehumidification mode to control the humidity inside the vehicle.

[0050] S5. If the vehicle power mode is the second mode, the humidity inside the vehicle is not less than the preset second humidity threshold, and a passenger occupancy signal is obtained, or the rain amount signal is the first signal value and a passenger occupancy signal is obtained, then use the number of passengers to determine the fogging risk level and execute the corresponding air conditioner control instruction.

[0051] Here, the second mode is that the vehicle power mode switches from off to comfort. Specifically, if the vehicle power mode switches from off to comfort, the rain signal feedback indicates rain and the passenger occupancy signal is recognized (a passenger is seated), or the humidity inside the vehicle is ≥ 75% and the passenger occupancy signal is recognized (a passenger is seated), then it is determined that there is a risk of fogging.

[0052] Furthermore, the number of passengers is used to determine the fogging risk level and execute the corresponding air-conditioning control instructions. Specifically, if the number of passengers is greater than a preset first quantity threshold and less than a preset second quantity threshold, the fogging risk level is the first level; if the number of passengers is greater than a preset third quantity threshold and less than a preset fourth quantity threshold, the fogging risk level is the second level.

[0053] Here, the first quantity threshold is 1, the second quantity threshold is 2, the third quantity threshold is 3, and the fourth quantity threshold is 5.

[0054] If the fogging risk level is 1, a control instruction is issued to associate the current mode of the air conditioner with the window-blowing mode and execute the outside circulation; if the operating voltage of the blower is less than 5.1V, it is controlled to rise to 5.1V, and if the current voltage is greater than or equal to 5.1V, the current state is maintained.

[0055] If the fogging risk level is 2, a control instruction is issued to associate the current mode of the air conditioner with the window-blowing mode and execute the outside circulation; if the operating voltage of the blower is less than 6V, it is controlled to rise to 6V, and if the current voltage is greater than or equal to 6V, the current state is maintained.

[0056] S6. Determine the temperature difference between the glass temperature and the dew point temperature; if the temperature difference is greater than the preset threshold, it is determined that there is no fogging risk, and S7 is executed; otherwise, it is considered that there is a fogging risk, and S8 is executed.

[0057] S7. Execute the corresponding control instructions according to the humidity inside the vehicle.

[0058] Specifically, if the humidity inside the vehicle is ≥ 80%, the compressor is turned on for dehumidification until the humidity inside the vehicle < 65%, and the dehumidification exits; if the humidity inside the vehicle ≥ 80% again, the dehumidification strategy needs to be run again until it exits.

[0059] S8. Determine the corresponding air-conditioning control instructions according to the fogging risk level, the air-conditioning state, and the automatic defogging sensitivity.

[0060] In this embodiment, the fogging risk level is judged according to the temperature difference. Specifically, first, based on the humidity collected by the optical rain and humidity sensor, the corresponding temperature difference threshold is determined by looking up the table. The corresponding relationship between the humidity and the temperature difference threshold is shown in Table 1.

[0061] Table 1 Corresponding table of humidity and temperature difference threshold

[0062] Humidity (%) 10 30 50 60 70 80 90 100 Threshold value (℃) 20 30 30 30 45 50 60 75

[0063] Then, compare the temperature difference with the temperature difference threshold at the corresponding humidity. If the temperature difference < the temperature difference threshold at the corresponding humidity, there is no fogging risk, that is, the fogging risk level is 0; if the temperature difference > 5°C, it is a low risk, that is, the fogging risk level is 1; if 2°C < the temperature difference ≤ 5°C, it is a medium risk, that is, the fogging risk level is 2; if the temperature difference ≤ 2°C, it is a high risk, that is, the fogging risk level is 3.

[0064] If the fogging risk level is 1, send a control command to associate the current mode of the air conditioner with the window-blowing mode and execute the external circulation; if the operating voltage of the blower is less than 5.1V, control it to rise to 5.1V, and if the current voltage is greater than or equal to 5.1V, maintain the current state.

[0065] If the fogging risk level is 2, send a control command to associate the current mode of the air conditioner with the window-blowing mode and execute the external circulation; if the operating voltage of the blower is less than 6V, control it to rise to 6V, and if the current voltage is greater than or equal to 6V, maintain the current state.

[0066] If the fogging risk level is 3, send a control command to associate the current mode of the air conditioner with the window-blowing mode and execute the external circulation; if the operating voltage of the blower is less than 7V, control it to rise to 7V, and if the current voltage is greater than or equal to 7V, maintain the current state.

[0067] Furthermore, the user can set the automatic defogging sensitivity according to needs. The defogging risk levels corresponding to different automatic defogging sensitivities are shown in the following table.

[0068] Table 2 Risk level output corresponding to different sensitivity settings of users

[0069]

[0070]

[0071] Specifically, determine whether the air conditioner is in the on state. If so, run the corresponding air conditioner strategy according to the fogging risk level; if the air conditioner is not on, after reaching the corresponding risk level according to the automatic defogging sensitivity set by the user, automatically turn on the air conditioner and pop up a reminder to the user, and run the air conditioner strategy corresponding to the fogging risk level. When the fogging risk level drops to 0, the air conditioner settings return to the state before fogging.

[0072] Furthermore, if the user turns off the air conditioner during the operation of the anti-fogging strategy, when the fogging risk level = 3, switch to the external circulation to reduce the temperature difference and humidity and reduce the fogging risk. When the fogging risk level < 3, return to the circulation state before fogging.

[0073] Embodiment 2

[0074] This embodiment discloses a vehicle anti-fog control system, including:

[0075] A monitoring module, configured to: in response to the on states of the vehicle and the automatic defogging function, obtain the outside temperature of the vehicle;

[0076] An anti-fog control module, configured to: based on the comparison result between the outside temperature of the vehicle and a preset temperature threshold, execute a corresponding vehicle anti-fog control strategy to control the air conditioner of the vehicle, so that the air conditioner defogs the window glass of the vehicle;

[0077] Wherein, the vehicle anti-fog control strategy includes a first control strategy based on the vehicle state and a second control strategy based on the temperature difference. The first control strategy determines a control command by comparing the vehicle power mode, the in-vehicle humidity, and the rain signal with preset data, and combining the fogging risk level corresponding to the number of passengers; the second control strategy determines a control command by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity. It should be noted here that the above monitoring module and anti-fog control module correspond to the steps in Embodiment 1. The examples and application scenarios implemented by the above modules and the corresponding steps are the same, but are not limited to the content disclosed in Embodiment 1 above. It should be noted that the above modules, as part of the system, can be executed in a computer system such as a set of computer-executable instructions.

[0078] Embodiment 3

[0079] Embodiment 3 of the present invention provides an electronic device, including a memory, a processor, and computer instructions stored on the memory and running on the processor. When the computer instructions are run by the processor, the steps of the above vehicle anti-fog control method are completed.

[0080] Embodiment 4

[0081] Embodiment 4 of the present invention provides a computer-readable storage medium for storing computer instructions. When the computer instructions are executed by a processor, the steps of the above vehicle anti-fog control method are completed.

[0082] Embodiment 5

[0083] Embodiment 5 of the present invention provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, the steps of the above vehicle anti-fog control method are implemented.

[0084] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing device generate means for implementing the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 or means for implementing the functions specified in one block or more blocks.

[0085] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means for implementing the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 or means for implementing the functions specified in one block or more blocks.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operation steps on the computer or other programmable device to generate a computer-implemented process, such that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or more flows and / or blocks Figure 1 or means for implementing the functions specified in one block or more blocks.

[0087] In the above embodiments, the descriptions of the various embodiments have their respective emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0088] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle anti-fog control method, characterized in that, including: obtaining the outside temperature of the vehicle in response to the on - state of the vehicle and the automatic defogging function; executing a corresponding vehicle anti - fog control strategy based on the comparison result between the outside temperature and a preset temperature threshold to control the air conditioner of the vehicle, so that the air conditioner defogs the window glass of the vehicle; wherein, the vehicle anti - fog control strategy includes a first control strategy based on the vehicle state and a second control strategy based on the temperature difference. The first control strategy determines a control command by comparing the vehicle power mode, the in - vehicle humidity, and the rain signal with preset data and combining the fogging risk level corresponding to the number of passengers; the second control strategy determines a control command by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity.

2. The vehicle anti-fog control method according to claim 1, characterized in that, The execution of the vehicle anti - fog control strategy based on the comparison result between the outside temperature and the preset temperature threshold is specifically: if the outside temperature is less than the preset temperature threshold, the first control strategy is executed; if the outside temperature is greater than or equal to the preset temperature threshold, the second control strategy is executed.

3. The vehicle anti-fogging control method according to claim 1, characterized in that The determination of the control command by comparing the vehicle power mode, the in - vehicle humidity with preset data and combining the fogging risk level corresponding to the number of passengers includes: if the vehicle power mode is the first mode and the in - vehicle humidity is not less than a preset first humidity threshold, a first air - conditioner control command is issued to make the air conditioner switch to a non - full - internal - circulation mode; if the vehicle power mode is the second mode, the in - vehicle humidity is not less than a preset second humidity threshold, and the passenger occupancy signal or the rain signal is a first signal value and the passenger occupancy signal is obtained, the number of passengers is used to determine the fogging risk level and the corresponding air - conditioner control command is executed.

4. The vehicle anti-fogging control method according to claim 1, characterized in that, The fogging risk level corresponding to the number of passengers is specifically: if the number of passengers is greater than a preset first number threshold and less than a preset second number threshold, the fogging risk level is the first level; if the number of passengers is greater than a preset third number threshold and less than a preset fourth number threshold, the fogging risk level is the second level.

5. The vehicle anti-fog control method according to claim 1, characterized in that, The first control strategy further includes: if the air - conditioner state is the on - state, the rain signal is a first signal value or the in - vehicle humidity is not less than a preset second humidity threshold, a second air - conditioner control command is issued to make the air conditioner execute the window - blowing mode and the dehumidification mode.

6. The vehicle anti-fog control method according to claim 1, characterized in that, The determination of the control command by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity includes: if the temperature difference is greater than a preset threshold, corresponding control commands are executed according to the in - vehicle humidity; if the temperature difference is less than or equal to the preset threshold, corresponding air - conditioner control commands are determined according to the fogging risk level, the air - conditioner state, and the automatic defogging sensitivity.

7. A vehicle anti-fog control system, characterized in that, including: a monitoring module configured to: obtain the outside temperature in response to the on - state of the vehicle and the automatic defogging function; an anti - fog control module configured to: execute a corresponding vehicle anti - fog control strategy based on the comparison result between the outside temperature and a preset temperature threshold to control the air conditioner of the vehicle, so that the air conditioner defogs the window glass of the vehicle; Among them, the vehicle anti-fog control strategy includes a first control strategy based on the vehicle state and a second control strategy based on the temperature difference. The first control strategy determines the control instruction by comparing the vehicle power mode, the in-vehicle humidity, and the rain signal with the preset data, and combining the fogging risk level corresponding to the number of passengers. The second control strategy determines the control instruction by using the temperature difference between the glass temperature and the dew point temperature and combining the automatic defogging sensitivity.

8. An electronic device, comprising a memory, a processor, and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the steps of the vehicle anti-fog control method according to any one of claims 1-6.

9. A computer-readable storage medium having computer programs / instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, the steps of the vehicle anti-fog control method according to any one of claims 1-6 are implemented.

10. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, the steps of the vehicle anti-fog control method according to any one of claims 1-6 are implemented.

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