JP2008018740A - On-vehicle carbon monoxide poisoning suppression system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle carbon monoxide poisoning suppression system capable of suppressing a user from being poisoned by carbon monoxide, even when the concentration of CO gas in outside air is higher than that in a cabin. <P>SOLUTION: The concentration of the CO gas is measured in the cabin and the outside air, respectively, by a CO sensor. When a control part judges that the concentration of the CO gas in the cabin is higher than that in the outside air, the user is instructed to open windows so that the CO gas of high concentration may be exhausted as much as possible from the cabin. When the control part judges that the concentration of the CO gas in the outside air is higher than that in the cabin, the user is instructed to close the windows so that CO gas of high concentration may not flow as much as possible into the cabin. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted carbon monoxide poisoning suppression system.

  There are many accidents in which a child becomes poisoned with carbon monoxide because the user leaves the car while leaving the child in the passenger compartment while the car engine is running. In addition, there is an accident in which the exhaust gas flows backward into the passenger compartment due to a malfunction or the like, and the user inhales carbon monoxide (hereinafter also referred to as CO gas) contained therein.

  For such a situation, the following techniques are disclosed in the patent literature. First, the CO gas concentration in the passenger compartment of the automobile is detected every unit detection time. When the concentration exceeds a predetermined reference value, the air conditioning system introduces outside air, opens windows, ventilates, alerts, and turns off the engine. is there.

Thereby, when the CO gas concentration exceeds the reference value, the vehicle interior is ventilated by replacing it with outside air, and the user can be prevented from becoming carbon monoxide poisoning.
JP-A-8-156574

  However, with the above technology, if the CO gas concentration in the outside air is higher than that in the passenger compartment, it is dangerous to ventilate with the outside air just because the CO gas concentration in the passenger compartment exceeds the reference value. There was a problem that it was not possible to prevent carbon monoxide poisoning.

  The present invention has been made in view of the above problems, and the object thereof is in-vehicle carbon monoxide poisoning that can prevent the user from becoming carbon monoxide poisoning even when the CO gas concentration in the outside air is higher than that in the passenger compartment. To provide a deterrence system.

  In order to solve the above-described problem, according to the invention described in claim 1, a ventilation means for ventilating the passenger compartment, a ventilation means for ventilating the passenger compartment, and a vehicle interior of the vehicle are attached. Vehicle interior detection means for detecting the carbon monoxide concentration in the vehicle interior, vehicle exterior detection means for detecting the carbon monoxide concentration outside the vehicle interior and for detecting the carbon monoxide concentration outside the vehicle interior, and the vehicle detected by the vehicle interior detection means When the indoor carbon monoxide concentration is equal to or higher than a predetermined concentration and the carbon monoxide concentration outside the passenger compartment is less than the predetermined concentration, the ventilation means is ventilated in the passenger compartment. Control means, and the control means is configured such that the carbon monoxide concentration outside the vehicle compartment detected by the vehicle interior detection means is greater than the carbon monoxide concentration detected by the vehicle compartment detection means. If it is expensive and the vehicle interior If any of the beauty car outdoor carbon monoxide concentration is the predetermined concentration or more, the ventilation means, not to perform the ventilation of the vehicle interior, characterized by.

  Thus, the carbon monoxide concentration outside the vehicle interior as well as the vehicle interior is detected, the carbon monoxide concentration outside the vehicle interior is higher than the vehicle interior, and any of the detected carbon monoxide concentrations is equal to or higher than the predetermined concentration. If the configuration is such that ventilation by the ventilation means is not performed in this case, it is possible to prevent the user from becoming intoxicated with carbon monoxide even when the carbon monoxide concentration in the outside air is higher than in the passenger compartment. Here, the predetermined concentration is a carbon monoxide concentration that is considered dangerous for the human body. By the way, the law stipulates that the daily average value of 1 hour value is 10 ppm (parts per million) or less and the 8 hour average value is 20 ppm or less as a safety standard for carbon monoxide concentration. In addition, the concentration in the office room is set to 50 ppm or less (10 ppm or less in an office with air conditioning equipment or mechanical ventilation equipment). Therefore, the predetermined concentration here may be, for example, a concentration of about 10 ppm as an instantaneous value.

  According to a second aspect of the present invention, in the carbon monoxide poisoning suppression system according to the first aspect, the ventilation means is a window device that opens and closes a vehicle window, and the window is opened. The ventilation is performed, and the window device detects the vehicle exterior detection means when the window is in an open state after opening the window to ventilate the vehicle interior. The measured carbon monoxide concentration outside the vehicle compartment is higher than the carbon monoxide concentration detected by the vehicle interior detection means, and one of the carbon monoxide concentrations outside the vehicle interior and the vehicle interior is the predetermined value. The control means causes the window device to close the window when it falls into a situation of a concentration higher than the above.

  As described above, when the vehicle window device is adopted as the ventilation means, the air in the vehicle compartment is ventilated by the air outside the vehicle compartment by opening the window. Further, after the window is opened in response to the fact that the carbon monoxide concentration in the passenger compartment is equal to or higher than the predetermined concentration and the carbon monoxide concentration outside the passenger compartment is lower than the predetermined concentration as in the invention of claim 1, If the carbon monoxide concentration outside the passenger compartment is higher than that in the passenger compartment and the interior of the passenger compartment or outside the passenger compartment falls into a predetermined concentration or higher, the window in the open state is left open. Is configured to close. Thereby, it can suppress that a user becomes carbon monoxide poisoning.

  By the way, the window is opened arbitrarily by the user. To that end, as in the invention of claim 3, the carbon monoxide concentration outside the passenger compartment is higher than that in the passenger compartment while the window opened by the user remains in that state, and either the passenger compartment or outside the passenger compartment is When falling into a situation of a predetermined concentration or more, the window in the open state is closed. Also by doing in this way, it can suppress that a user becomes carbon monoxide poisoning.

  Furthermore, in the invention according to claim 4, in the carbon monoxide poisoning suppression system according to any one of claims 1 to 3, the system further comprises a communication means for reporting to an emergency organization by radio communication, and is detected by the detection means. When the carbon monoxide concentration in the passenger compartment is equal to or higher than a predetermined concentration, the control means instructs the communication means to notify the emergency engine.

  In this way, even if the user is deprived of physical freedom due to carbon monoxide poisoning, a report is automatically made to the emergency organization and rescue can be quickly received.

  According to a fifth aspect of the present invention, in the in-vehicle carbon monoxide poisoning suppression system according to any one of the first to fourth aspects, any of the carbon monoxide concentration detected by the detection means or outside the vehicle interior is detected. In a case where the density is equal to or higher than the predetermined density, the user is notified by voice or screen display.

  With this configuration, even when the carbon monoxide concentration in the passenger compartment is less than the predetermined concentration, if the concentration outside the passenger compartment is equal to or higher than the predetermined concentration, the user is notified and received this The user knows that there is a dangerous area with a high carbon monoxide concentration around the vehicle, and can avoid the risk of carbon monoxide poisoning in advance by moving the vehicle.

[First Embodiment]
[Description of configuration]
Hereinafter, an embodiment when the present invention is applied to an in-vehicle navigation system will be described with reference to the drawings. The outline of the present embodiment is to detect the CO gas concentration of the outside air in the passenger compartment and around the vehicle and compare the detected CO gas concentration with a preset reference value to open the vehicle window according to the situation. It is closed, notified to the user, or notified to the emergency organization.

  FIG. 1 is a block diagram showing an outline of a vehicle-mounted carbon monoxide poisoning suppression system of this embodiment.

  The in-vehicle carbon monoxide poisoning suppression system is mainly composed of a navigation device 100 that issues a CO gas discharge instruction, a notification to a user, and a notification to the emergency engine 300, and a vehicle window that receives the discharge instruction from the navigation device 100. A window device 200 that opens and closes is connected by an in-vehicle LAN (Local Area Network).

  The navigation device 100 includes a position detector 2 that detects the current position of the vehicle, an HDD (Hard Disk Drive) device 120 that stores map data and the like, and reads stored data, and an operation unit 130 that receives instructions from a user. , A remote control sensor 131 that receives radio waves from a remote control terminal (hereinafter referred to as a remote controller) 132, a display unit 150 that provides a display to the user, and voice input / output for receiving instructions from the user's voice and performing voice notification Device 160, external communication device 170 for performing wireless communication with emergency engine 300, CO sensors 180 and 181 for detecting the CO gas concentration inside and outside the vehicle interior, and a window for performing in-vehicle LAN communication with window control unit 200 Interface section (hereinafter referred to as I / F section) 190 and these The control part 140 which controls is connected and comprised.

  The position detection unit 110 is composed of a geomagnetic sensor, a distance sensor, a gyroscope, and a GPS (Global Positioning System) receiver that detects the position of the vehicle based on radio waves from a satellite, and detects the current position of the vehicle while complementing each other. To do.

  In addition to the above map data, the HDD device 120 stores CO gas concentration data that is a determination reference value for the operation of the system (for example, an operation for notifying the user of the danger or instructing the user to exhaust the CO gas) Has been. The reference value is stored in various forms such as 1 hour value, 8 hour average value, and instantaneous value. In this embodiment, this reference value is an instantaneous value, and a specific value is set to 10 ppm (parts per million), for example. The basis for this is that the law (Basic Environmental Law) described in the item of means for solving the problem is, as a safety standard of the CO gas concentration, “the daily average value of 1 hour value is 10 ppm (parts per million) or less, And the average value for 8 hours shall be 20 ppm or less ”, and“ the concentration in the office room shall be 50 ppm or less (10 ppm or less in an office with air conditioning equipment or mechanical ventilation equipment) ” Based on what is stipulated.

  The operation unit 130 is a touch switch integrated with the display unit 150 or a mechanical touch switch group disposed on the instrument panel of the vehicle. By using these and sending an instruction to the control unit 140, the user can cause the navigation device 10 to perform an operation based on the instruction. The above instruction can also be given by the remote controller 132.

  The control unit 140 is mainly configured by a microcomputer in which a memory such as a ROM (Read Only Memory) and a RAM (Random Access Memory) in which a program for controlling the operation of the control unit 140 is stored in a CPU (Central Processing Unit) is connected. It is connected to each element of the navigation device 100. And it plays the role which controls operation | movement of the navigation apparatus 100 based on the instruction | indication from a user, or the input from a sensor. In particular, in the present embodiment, the CO gas concentration detected by the CO sensor is periodically transmitted by an internal clock (not shown), the CO gas concentration is analyzed in the RAM (average value calculation, etc.), and compared with a reference value. To transmit an instruction to the window device or to instruct the display unit 150 or the voice input / output device 160 to notify the user. This analysis result (average value or the like) is stored in the HDD device 120 with a data amount for a certain period (for example, several hours) as a limit. However, in the present embodiment, the control unit 140 uses the instantaneous value detected by the CO gas sensors 180 and 181 as it is in comparison with the reference value.

  The display unit 150 is a liquid crystal display or an organic EL (Electro Luminescence) display. By adopting a touch panel, the display unit 150 is configured integrally with a part of the operation unit 130 to display and notify the map data and other data to the user. In addition to receiving instructions from the user.

  The voice input / output unit 160 includes a microphone, a speaker, and a voice recognition device. The voice input / output unit 160 performs voice notification to the user through the speaker based on an instruction from the control unit 140, while the user inputs the voice from the microphone. An instruction can be given to the control unit 140 without any operation.

  The external communication device 170 is a data communication module, and automatically notifies the emergency engine 300 of an abnormality of the vehicle in accordance with an instruction from the control unit 140 in an abnormal state (for example, a state where the CO gas concentration in the passenger compartment is equal to or higher than a reference value). To do. At this time, the current position of the vehicle detected by the position detector 110 is also notified. In addition, a call with the emergency organization 300 (for example, an operator) is possible.

  A plurality of CO sensors 180 are mounted in the vehicle interior of the vehicle, detect instantaneous values of the CO gas concentration in the vehicle interior as data, and transmit the data to the control unit 140. A plurality of CO sensors 181 are installed outside the vehicle compartment of the vehicle. The instantaneous value of the CO gas concentration in the outside air attached is detected as data, and the data is transmitted to the control unit 140.

  The I / F unit 190 receives a response signal from the window device 200 sent via the in-vehicle LAN communication, or transmits an instruction signal sent from the control unit 140 to the window device 200. Although not shown, the navigation apparatus 100 includes a television receiver and a VICS receiver for obtaining traffic information.

  Next, the window device 200 includes a vehicle window (not shown), a motor for driving the window, and a control device (ECU: Electronic Control Unit) for controlling the motor, and controls the motor in response to an instruction from the control unit 140. Open and close the window.

  The emergency engine 300 is an operation center, for example, and arranges emergency vehicles and the like when it is confirmed that the vehicle is abnormal.

[Description of operation]
Next, the operation of the control unit 140 according to the present invention will be described with reference to the flowcharts, diagrams, and tables shown in FIGS.

  FIG. 2 is a flowchart showing the normal operation of the control unit 140 according to the present invention. The normal operation is an operation when the CO gas concentration detected by the CO sensors 180 and 181 is less than a preset reference value. In this embodiment, when the vehicle drive source is started (ignition on) or the accessory is on, the operation is started to measure the CO gas concentration, and conversely the vehicle drive source is stopped (ignition off). ) Or when the accessory is off, the measurement is stopped, the measurement data up to that point is stored in the HDD device 12, and the operation is terminated.

  The operation start (step S200) in the flowchart shown in FIG. 2 is when the user starts the drive source of the vehicle or turns on the accessory. Upon receiving this operation, the controller 140 that is supplied with power is activated and reads the analysis value of the past CO gas concentration stored in the HDD device 12 before the end of the previous operation into the RAM as an initial value (Step S1). S210).

  In step S220, the CO sensor 180 and 181 monitoring interrupt operation settings are performed. The interrupt operation is an exhaust instruction for opening the window by analyzing the CO gas concentration data detected by the CO sensors 180 and 181 and periodically sent to the control unit 140 and comparing with the reference value. This is an operation for giving a notification instruction such as displaying an information display screen of the CO gas concentration inside and outside the vehicle interior on the display unit 150 as shown in FIG.

  This interruption operation occurs periodically, and when it occurs, it is performed in parallel with or in priority to other operations (for example, route search operation and map display operation, which are general navigation operations). Detailed description will be given later with reference to FIGS.

  Next, in step S230, communication with the window device via the in-vehicle LAN is established, and the process proceeds to step S240 to wait for an event. In addition to the interrupt operation described above, this event means that the user manually calls the information display screen for the CO gas concentration. Then, the operation ends when the user stops the driving source of the vehicle or turns off the accessory (step S250).

  Next, FIG. 3 is a flowchart showing the operation of the control unit 140 when this CO gas concentration information display screen is automatically called by an interruption operation or manually by a user. FIG. 4 is a schematic view showing an example of the information display screen.

  Hereinafter, the operation when the above screen is called and the screen display of the display unit 150 will be described with reference to FIGS.

  In response to the above call, the control unit 140 initializes the display setting of the information display screen for the CO gas concentration displayed on the display unit 150. For example, the CO gas concentration data of the inside and outside air of the vehicle to be displayed at 400 and 411 in FIG. 4 is reset to zero (step S310). Then, the latest CO gas concentration information acquired from the CO sensor is substituted into the data and displayed on the screen (step S320). This screen display is automatically deleted after a predetermined time has elapsed, or can be manually deleted by the user, and when the display is deleted, the operation of this flowchart ends (step S330).

  The above is the operation of the control unit 140 when calling up the CO gas concentration information display screen.

  Next, the interrupt operation for monitoring the CO sensors 180 and 181 will be described with reference to the table shown in FIG. 5 and the flowchart shown in FIG.

  FIG. 5 is a list summarizing the main points of the operation of the flowchart shown in FIG. Based on the CO gas concentration inside and outside the vehicle detected by the CO sensors 180 and 181 and the rules shown in this list, the control unit 140 displays an instruction for displaying CO gas concentration information, a voice notification instruction, a window It is determined whether an opening / closing instruction or a rescue request instruction to the emergency engine 300 is necessary or not, and if necessary, the instruction is given.

  Specifically, when the CO gas concentration in the vehicle interior and the CO gas concentration in the outside air are both less than the reference value (hereinafter referred to as case 1), the CO gas concentration in the vehicle interior is less than the reference value, but the CO gas in the outside air When the gas concentration is equal to or higher than the reference value (hereinafter referred to as case 2), the CO gas concentration in the passenger compartment is equal to or higher than the reference value, and the CO gas concentration of outside air is lower than the reference value (hereinafter referred to as case 3). The determination is made based on four cases where the CO gas concentration in the passenger compartment and the CO gas concentration in the outside air are both equal to or higher than the reference value (hereinafter referred to as case 4).

  In case 1, since it is normal, the control unit 140 does not give an instruction.

  In case 2, the interior of the vehicle is normal, but the outside of the vehicle is determined to be dangerous, and a CO gas concentration display screen, audio notification, and an instruction to close the window are given to ensure safety and alert the user.

  In case 3, the vehicle interior is abnormal and the vehicle exterior is normal, so the CO gas concentration display screen, audio notification, and an instruction to open the ventilation window are provided to ensure safety and alert the user. To the emergency organization 300 and request rescue.

  In case 4, the CO gas concentration display screen, voice notification, window operation, and rescue request are all instructed. However, when the CO gas concentration in the passenger compartment is higher than the outside air, the window operation instruction is instructed to open and vice versa. When the CO gas concentration in the passenger compartment is lower than the outside air, the window operation instruction is a closing instruction.

  Next, the detailed operation of the control unit 140 will be described with reference to the flowchart shown in FIG.

  First, the trigger for starting the operation of the flowchart (step S600) is the time point when the control unit 140 requests the sensors 180 and 181 to transmit the measured CO gas concentration information. As described above, this request is made periodically. In response to the request, the sensors 180 and 181 transmit the CO gas concentration detected at that time to the control unit 140.

  Next, the control unit 140 acquires the transmitted CO gas concentration information and stores it in the HDD device 120 (step S610), and compares the preset reference value with the acquired CO gas concentration information (step S610). Step S620).

  In step S630, it is first determined from the comparison result in step S620 whether the current situation corresponds to case 1 or case 4. Hereinafter, based on the case determined in step S630 and the rules of the table shown in FIG. 5 (whether each instruction of the CO gas concentration screen display instruction, the voice notification instruction to the user, the window operation instruction, or the rescue request instruction is necessary). Then, the control unit 140 determines the operation.

  Step S640 is a step in which the operation branches depending on whether or not an instruction from the control unit 140 to the window device 200 is necessary. If it is determined as case 1 in the above-described step S630 (step S640: no), the process proceeds to step S650, and if it is determined as the other case (step S640: yes), the process proceeds to step S641.

  In step S641, if it is determined as case 2 in step S630, the CO gas concentration in the passenger compartment is less than the reference value, but the outside air is greater than or equal to the reference value, so that the window device 200 closes the window. Through the in-vehicle LAN. Here, the state in which the window is opened refers to a case in which the window falls into the state of case 3 as described later, the window is opened by an instruction from the control unit 140, and the opened state continues until this time. However, the instruction to close the control unit 140 is transmitted in either case. This instruction is also transmitted when the window is already closed. In response to this, the window device 200 drives the motor and closes the window. On the other hand, when it is determined as case 3, contrary to case 2, the window apparatus 200 is instructed to open the window. In response to this, the window device 200 drives the motor to open the window. Further, when the case 4 is determined, if the CO gas concentration in the vehicle interior is higher than the outside air, an instruction is given to open the window in order to exhaust even a little high concentration of CO gas from the vehicle interior. If the CO gas concentration in the vehicle interior is higher, the window is instructed to close so that even a little high concentration of CO gas does not flow into the vehicle interior. After performing these operations, the process proceeds to step S650.

  By doing so, in the in-vehicle carbon monoxide poisoning deterrent system, the window is opened for ventilation even when the CO gas concentration in the outside air is higher than in the passenger compartment, as in Case 2 and Case 4 here. On the contrary, the high-concentration CO gas in the outside air does not flow in. Further, when the window is already in a released state, it is possible to prevent the high-concentration CO gas in the outside air from flowing into the vehicle interior by closing the window. For this reason, it can suppress that a user becomes carbon monoxide poisoning.

  Next, step S650 is a step in which the operation branches depending on whether or not a notification instruction to the emergency engine 300 is necessary. If it is determined as case 1 in step S630 (step S650: no), there is no abnormality and the process proceeds to step S660. Also, if it is determined as case 2 (step S650: no), the CO gas concentration in the passenger compartment is less than the reference value, so that it is considered that there is no need for notification, and the process proceeds to step S660. On the other hand, if it is determined as case 3 or case 4 (step S650: yes), the process proceeds to step S651.

  In step S651, the control unit 140 instructs the external communication device 170 to automatically notify the emergency engine 300 together with the current position of the vehicle detected by the position detector 110 that the user may be poisoned by carbon monoxide. The process proceeds to step S660. In response to this, the emergency organization 300 can arrange an emergency vehicle for rescue.

  When invaded by carbon monoxide, users lose their physical freedom. Therefore, it is natural that manual notification is not possible at this point. Here, by configuring so as to automatically notify the emergency organization 300 as described above, the user can receive quick rescue.

  Step S660 is a step in which the operation is branched depending on whether or not it is necessary to display the CO gas concentration display screen and call attention to the user. If it is determined that the case 1 is determined in step S630 (step S660: no), it is regarded as a normal state, and the process proceeds to step S670. If the other case is determined (step S660: yes), it is shown in FIG. The calling event of the CO gas concentration information display screen is generated, and the process proceeds to step S661.

  Step S661 is a step of determining whether or not the CO gas concentration display screen illustrated in FIG. 4 on the display unit 150 is displayed manually by the user. If it is determined that the user manually displays the display screen (step S661: yes), the display of the currently displayed screen (for example, 400 in FIG. 4) is performed without calling a new screen. , 410, etc.) (step S662), and the process proceeds to step S670. On the other hand, if the display screen is not displayed, the process proceeds to step S663 to forcibly display the CO gas concentration display screen, and the process proceeds to step S670. At this time, as shown by the displays 420 and 440 in FIG. 4, it is preferable to specifically indicate which part of the vehicle the CO gas concentration is abnormal so that the user can understand the coping method at a glance.

  Step S670 is a step of branching the operation depending on whether or not it is necessary to notify the user of abnormality in the CO gas concentration by voice. First, when it is determined as case 1 in step S630, the operation is terminated (step S680), and the process returns to step S240 (event waiting state) in the flowchart shown in FIG. On the other hand, if it is determined that the case is other than case 1, the process proceeds to step S671 to instruct the voice input / output unit 160 (speaker) to notify the user that the CO gas concentration is abnormal. Thereafter, the operation is terminated, and the process returns to step S240.

  By performing steps S661 and S671, as in case 2, even if the CO gas concentration in the passenger compartment is lower than the predetermined concentration, if the concentration outside the passenger compartment is equal to or higher than the predetermined concentration, the user is notified. In response to this notification, the user knows that there is a dangerous area with high CO gas concentration around the vehicle, and can avoid the risk of carbon monoxide poisoning in advance by moving the vehicle. .

[Second Embodiment]
In the first embodiment, in order to save battery power, the operation on the vehicle-mounted device side is started and stopped by starting and stopping the vehicle drive source or turning the accessory on and off, and the measurement of the CO gas concentration is also started and ended. Was the premise. However, if the CO gas concentration is constantly measured and the data is updated and stored in the HDD device 120, an exhaust instruction, a notification instruction to the user, or a notification instruction to the emergency organization can be performed with higher accuracy. it can.

  In the second embodiment, even if the driving source of the vehicle is stopped, a part of the system continues to operate by power feeding from the battery. That is, the CO gas concentration is constantly measured by the CO sensors 180 and 181, and the measurement value and the analysis value obtained by analyzing the measurement value by the control unit 140 are constantly updated and stored in the HDD device 120. Then, the operation shown in FIGS. 2, 3, and 6 of the first embodiment is performed in response to the user operating the drive source of the vehicle. The present embodiment and the first embodiment are desirably selectable by the user. For example, when the user operates the operation unit 130, the first embodiment and the second embodiment can be used properly.

[Other Embodiments]
The present invention is not limited to the above embodiment and can take various forms. For example, in the above description, the control unit 140 is described as causing the CO sensors 180 and 181 to periodically transmit the detection result of the CO gas concentration, but the detection result of the CO gas sensor is continuously acquired, and the acquired concentration information is abnormal. If it is determined, an interrupt operation may be generated each time.

  In the above-described embodiment, the instantaneous value of the CO gas concentration is used to determine whether or not there is an abnormality, but naturally an average value of 1 hour value or 8 hour value may be used. At that time, in step S610, the control unit 140 acquires instantaneous value information (current information) of the CO gas concentration detected by the CO sensors 180 and 181 in the operation shown in the flowchart of FIG. The stored past information is read out, and then the average value of 1 hour value or 8 hour value is calculated. The calculated value is stored in the HDD device 120 together with the current information. Other operations are exactly the same as those described in the above embodiment.

  In addition, as described above, the instantaneous value and the average value of the 1-hour value and 8-hour value are not used for determining the abnormality of the CO gas concentration, but the time increase rate of the instantaneous value detected by the CO sensors 180 and 181 is calculated. Further, it may be determined whether the CO gas concentration is abnormal based on the increase rate. In that case, even if the measured instantaneous value does not satisfy the reference value, if the increase rate is equal to or greater than a predetermined value, it may be determined as abnormal.

  Further, in each of the above embodiments, the window device 200 is adopted as the ventilation means described in [Claims], but this may naturally be an outside air introducing device in a vehicle air conditioner.

It is the block diagram which showed the outline of the vehicle-mounted carbon monoxide poisoning suppression system of this invention. It is a flowchart which shows operation | movement of the vehicle-mounted carbon monoxide poisoning suppression system of this invention. It is a flowchart which shows operation | movement of the vehicle-mounted carbon monoxide poisoning suppression system of this invention. It is a harm figure showing an example of a report to a user of an in-vehicle carbon monoxide poisoning prevention system of the present invention. It is a table | surface which shows operation | movement of the vehicle-mounted carbon monoxide poisoning suppression system of this invention. It is a flowchart which shows operation | movement of the vehicle-mounted carbon monoxide poisoning suppression system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle-mounted carbon monoxide poisoning suppression system 100 ... Navigation apparatus 120 ... HDD apparatus 140 ... Control part 150 ... Display part 160 ... Voice input / output part 170 ... External communication Device 180, 181 ... CO sensor 200 ... Window device 300 ... Emergency engine

Claims (5)

A ventilation means for ventilating the passenger compartment;
Vehicle interior detection means attached to the vehicle interior for detecting the carbon monoxide concentration in the vehicle interior;
A vehicle exterior detection means that is mounted outside the vehicle compartment and detects the concentration of carbon monoxide outside the vehicle compartment;
When the carbon monoxide concentration detected by the vehicle interior detection means is equal to or higher than a predetermined concentration, and when the carbon monoxide concentration outside the vehicle interior is less than the predetermined concentration, Control means for causing the ventilation means to ventilate the vehicle interior;
Comprising
The control means includes a case where the carbon monoxide concentration outside the vehicle compartment detected by the vehicle interior detection means is higher than the carbon monoxide concentration detected by the vehicle compartment detection means, and the vehicle interior. And if any of the carbon monoxide concentrations outside the passenger compartment is equal to or higher than the predetermined concentration, the ventilation means is not allowed to ventilate the passenger compartment,
In-vehicle carbon monoxide poisoning suppression system. The ventilation means is a window device that opens and closes a window of a vehicle, and the ventilation is performed by opening the window.
After the window device opens the window to ventilate the vehicle interior, the carbon monoxide concentration outside the vehicle compartment detected by the vehicle exterior detection means when the window is in an open state, When the carbon monoxide concentration detected by the vehicle interior detection means is higher than the carbon monoxide concentration in the vehicle interior and any of the carbon monoxide concentrations outside the vehicle interior and the vehicle compartment falls below the predetermined concentration. The control means causes the window device to close the window;
The in-vehicle carbon monoxide poisoning prevention system according to claim 1. The ventilation means is a window device that opens and closes a window of a vehicle, and the ventilation is performed by opening the window.
After the user opens the window to ventilate the vehicle interior, the carbon monoxide concentration outside the vehicle compartment detected by the vehicle exterior detection means when the window is in an open state is the vehicle interior. When the carbon monoxide concentration detected by the detection means is higher than the carbon monoxide concentration in the vehicle interior and the carbon monoxide concentration outside the vehicle compartment or outside the vehicle compartment falls below the predetermined concentration, the control is performed. Means for causing the window device to close the window;
The on-vehicle carbon monoxide poisoning suppression system according to any one of claims 1 to 2. A vehicle-mounted carbon monoxide poisoning suppression system according to any one of claims 1 to 3,
In addition, equipped with communication means to report to the emergency organization by wireless communication,
When the carbon monoxide concentration detected by the detection means is greater than or equal to a predetermined concentration, the control means instructs the communication means to notify the emergency organization;
In-vehicle carbon monoxide poisoning suppression system. An in-vehicle carbon monoxide poisoning suppression system according to any one of claims 1 to 4,
When either the vehicle interior or the carbon monoxide concentration detected by the detection means is equal to or higher than the predetermined concentration, the user is notified by voice or screen display;
In-vehicle carbon monoxide poisoning suppression system.

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