FR3136426A3 - Automatic front and rear windshield wiper device, intended to prevent the front windshield and rear window of motor vehicles from freezing during prolonged parking, in negative temperatures, outside shelters, without ignition key and without action or presence human - Google Patents

Abstract

Automatic windshield wiper triggering device. The invention relates to a device intended to prevent the windshields and rear windows of land, sea, air and rail motor vehicles from freezing in winter, during prolonged parking outside shelters, with the engine off and without ignition keys or action. or human presence. When the vehicle is parked, the sensor detects an exterior temperature likely to freeze its windshields and rear window, it communicates the information to the program, which triggers short cycles at long and regular intervals of round-trip wipers. front and rear as well as their gel. It is composed of a front and rear windshield wiper device known from the state of the art, traditionally fitted to self-propelled vehicles and identically placed are connected to a temperature probe and an automated program. The whole thing, connected directly to an independent electric battery but recharged by the vehicle, makes it operational without an ignition key. Example: five back and forth strokes of the windshield wipers, six times per hour. It has an energy safety function by automatically disconnecting, if the vehicle has not been running, after a certain period. Although attached to a traditional windshield wiper device, the device remains independent of it in its rain sweeping function. A computer entry on a weather website can replace the probe. The device according to the invention is particularly intended for winter vehicles.

Description

Automatic front and rear windshield wiper device, intended to prevent the front windshield and rear window of motor vehicles from freezing during prolonged parking, in negative temperatures, out of shelter, without ignition key and without action or presence human

The present invention relates to a fully automatic front and rear windshield wiper device, intended to prevent the front windshield and the rear window of self-propelled vehicles (land, sea, air, rail) from freezing during prolonged parking, by temperature negative, out of shelter, without ignition key and without human action or presence. In extreme cold, removing ice from windshields is usually done manually using a scraper, but this solution is long and tedious, especially as the layer of ice is thick.

The use of the hot air defogging system traditionally fitted to motor vehicles towards the windshield is time-consuming because it requires waiting several minutes for the vehicle's engine to heat up.

As for removing ice from the rear window using the electric resistance defogging system, this also proves to be time-consuming. Finally, placing a piece of cardboard on the windshield is a tedious and cumbersome solution.

The device according to the invention makes it possible to remedy these drawbacks.

In fact, according to a first characteristic, it comprises a front system and a rear windshield wiper system, known from the state of the art, composed of drive motors, the mechanism, the windshield wiper blades, the program computer, traditionally fitted to motor vehicles and identically placed on them.

An exterior temperature sensor as well as a PLC program (attached) are physically connected via an electrical harness to the conventional front and rear wiper systems. All of these elements are connected directly to another electric battery than that of the vehicle engine but embedded in it. A manual or digital control for putting the device on standby is placed in the passenger compartment of the vehicle. The device is functional when it is in standby mode.

If a vehicle equipped with this system on standby is parked outside shelters in negative temperatures, the temperature sensor then transmits the information to the program, which triggers short cycles at long and regular intervals of sweeps (back and forth) of the windshield wipers front and rear, equipping the said vehicle.

1. Le nombre de balayages (aller-retour) des bras d'essuie-glaces par déclenchements automatiques.
2. Le nombre de déclenchements automatiques pendant la période de veille du système (fréquence de déclenchement). Par exemple : cinq balayages (dix aller-retours) des bras d'essuie-glaces, six fois par heure.

This windshield wiper arm activation program runs according to two parameters:

1. The number of sweeps (round trip) of the windshield wiper arms by automatic triggering.
2. The number of automatic triggers during the system sleep period (trigger frequency). For example: five sweeps (ten round trips) of the wiper arms, six times per hour.

As frost forms at a temperature equal to or below zero degrees centigrade, it will regularly be prevented or eliminated by the action of the sweeps of the front and rear wiper arms, before it forms.

If, despite everything, the windshield or rear window begins to freeze between two cycles of starting the windshield wiper arms, it will not be thick and will be eliminated at the next automatic triggering as long as the outside temperature will not come back up.

In the event of an increase in the outside temperature (to a defined level), during the parking period of the vehicle equipped with the system put on standby, the temperature sensor stops communicating with the program which no longer triggers a cycle. sweeping of the windshield wiper arms but remains on standby in the event of a drop in the outside temperature.

The device is completely deactivated when the shutdown control connected to the device and located on the vehicle dashboard is placed in mode, manually.

It is reactivated in standby mode when the user activates the device via the said command, whatever the temperature.

The device can be deactivated automatically after a certain period of standby, without starting the vehicle's engine, in order to avoid the risk of battery discharge, whatever the outside temperature. In this case, the device automatically returns to standby after switching on followed by switching off the vehicle engine (if the device control is left in the ON position).

The device is automatically deactivated when the vehicle's engine is started so as not to generalize the driving of the said vehicle or to interfere with the usual use (sweeping the rain) of the classic and known windshield wiper system. . In this case, the device automatically returns to standby after stopping the vehicle engine (if the device control is left in the ON position).

The device is powered by an on-board electric battery or the vehicle's standard battery, independent of that of the engine of the vehicle equipped with the device in order to avoid the risk of it discharging. This second battery is, like the main battery, connected and recharged by the alternator of the said vehicle.

A device standby indicator light is installed on the vehicle dashboard.

The device can be assembled as standard or be attached as a kit to a front and rear windshield wiper system of an already designed vehicle.

The user of a vehicle equipped with the device according to the invention will find the windshield and the rear window thereof, free of any frost, after a long period of parking in extreme cold.

According to a variant, the system has a computer input on any weather data website which it receives, in real time, the exterior temperature likely to freeze the windshield and the rear window. In this hypothesis, the system operates according to the same methods mentioned above but without the aid of a temperature probe.

The device according to the invention comprises, all or parts, of front and rear windshield wiper systems known from the state of the art, traditionally fitted to self-propelled vehicles and identically placed on them, in this case the parts mechanical components composed of the front and rear wiper arm(s), their drive motor, their movement mechanism system and their wiper blade(s).

Their structures and arrangements remain identical to those of vehicles which are traditionally equipped with them.

An exterior temperature sensor, known from the state of the art, is placed in the vehicle; its role being to communicate with the program based on a defined external temperature.

A PLC program (attached), filed, completes the device.

An electrical harness connects the mentioned elements to each other.

The device is connected directly and therefore permanently powered (in the ON position), to an on-board energy source (for example electric battery), but independent of that of the engine of the vehicle equipped with said device. This second battery is connected and recharged by the alternator of the said vehicle.

When the outside temperature drops to a level (defined in the program in degrees centigrade Celsius or Fahrenheit) likely to freeze the windshields and rear window of a parked vehicle equipped with the device on standby, the temperature sensor then transmits the information in the program, which triggers short cycles at long and regular intervals, triggering the motors and therefore the front and rear wiper arms, thus eliminating the mist removed from the glass walls, before it freezes .

Here is the automaton program:

1 #include <stdbool.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <string.h>
5
6 /*the entries*/
7 float H_capt;
8 float T_sounde;
9 bool ECU;
10 float U_bat;
11
12 /*the exits*/
13 bool wipers;
14
15 /*parameters*/
16 float H_lim;
17 float T_lim;
18
19 float Umax_bat;
20 float Lv_bat;
21 float Lv_min_bat;
22
23 float N_scan;
24 float N_declanch;
25 floatP;
26
27 /*the main program*/
28 ints
29 hand ()
30 {
31
32 /*parameters modified by the manufacturer*/
33
34 printf ("Temperature at which it snows:");
35 scanf("%f", &T_lim);
36
37 printf ("Humidity on which it snows:");
38 scanf("%f", &H_lim);
39
40 printf("Number of scans:");
41 scanf ("%f", &N_scan);
42
43 printf ("Number of triggers:");
44 scanf("%f", &N_declanch);
45
46 printf ("Max battery voltage:");
47 scanf ("%f", &Umax_bat);
48
49 printf("Shutdown battery level:");
50 scanf ("%f", &Niv_min_bat);
51
52 while (1)
53 {
54
55 printf ("Real-time battery voltage:");
56 scanf("%f", &U_bat);
57
58 Niv_bat = U_bat * 100 / Umax_bat;
59 printf ("Battery level=%.0f%\n", Bat_level);
60
61 printf ("Vehicle State:");
62 scanf("%d", &ECU);
63
64 printf("Temperature:");
65 scanf("%f", &T_sounde);
66
67 printf("Humidity:");
68 scanf("%f", &H_capt);
69
70 while (ECU == 0 && Niv_bat >= Niv_min_bat && T_sounde <= T_lim
71 && H_capt >= H_lim)
72 {
73
74 Startup ();
75sleep(1);
76
77 printf ("Real-time battery voltage:");
78 scanf ("%f", &U_bat);
79
80 Lv_bat = U_bat * 100 / Umax_bat;
81 printf ("Battery level=%.0f%\n", Bat_level);
82
83 printf ("Vehicle State:");
84 scanf("%d", &ECU);
85
86 printf("Temperature:");
87 scanf("%f", &T_sounde);
88
89 printf("Humidity:");
90 scanf("%f", &H_capt);
91
92 }
93 wipers = 0;
94 printf ("windshield wiper=%d\n", windshield wiper);
95sleep(1);
96 }
97 return 0;
98 }
99
100 /*under program*/
101
102 int Start() {
103
104 P=3600/N_declanch;
105
106 for(int i=0;i<N_declanch;++i){
107 for(int j=0;j<N_scan;++j){
108
109 wipers = 1;
110 printf ("windshield wiper=%d\n", windshield wiper);
111 sleep(1);
112
113 }
114 wipers = 0;
115 printf ("windshield wiper=%d\n", windshield wiper);
116
117 for (int k = 0; k <P; k++) {
118 sleep(1);
119 }
120
121 }
122 }
123

1. le nombre de balayage (aller-retour) des bras d'essuie-glace pour chaque déclenchement automatique.
2. le nombre de déclenchement automatique pendant la période de veille du système.
   Par exemple : cinq aller-retour des bras d'essuie-glace, six fois par heure.
   Une commande manuelle ou numérique d'arrêt reliée par faisceau électrique au dispositif est placée sur la planche de bord du véhicule.

The windshield wiper motors and arms are started according to two parameters:

1. the number of sweeps (round trip) of the wiper arms for each automatic triggering.
2. the number of automatic triggers during the system sleep period.
   For example: five round trips of the wiper arms, six times per hour.
   A manual or digital stop control connected by electrical harness to the device is placed on the dashboard of the vehicle.

1. Arrêt automatique des cycles des déclenchements des moteurs des bras d'essuie-glaces avants et arrières quand la température extérieure remonte, à un niveau défini, (véhicule stationné et son moteur coupé)
2. Mise en arrêt totale du dispositif quand la commande est placée manuellement en positon arrêt (quelle que soit la température extérieure)
3. Mise en arrêt totale et automatique du dispositif, après un temps défini de veille, quelque soit la température extérieure, puis remise automatique en veille au prochain démarrage du moteur du véhicule suivi d'un arrêt de celui-ci (si commande placée sur veille).
4. Mise en arrêt totale automatique du dispositif en cas de mise en marche du moteur du véhicule puis remise automatique en veille au prochain arrêt du moteur du dit véhicule, quelque soit la température extérieure (si commande placée sur veille).
5. Un témoin lumineux de mise en veille relié par faisceau électrique, placé sur la planche de bord du véhicule, complète le dispositif.

The PLC program integrated into the device also controls the following functions, in standby position:

1. Automatic stopping of the cycles of triggering the motors of the front and rear windshield wiper arms when the outside temperature rises to a defined level (vehicle parked and its engine off)
2. Complete shutdown of the device when the control is manually placed in the off position (regardless of the outside temperature)
3. Total and automatic shutdown of the device, after a defined standby time, whatever the outside temperature, then automatic return to standby the next time the vehicle engine is started followed by stopping it (if the control is placed on standby) .
4. Automatic total shutdown of the device when the vehicle's engine is started, then automatically returned to standby when the vehicle's engine is next stopped, regardless of the outside temperature (if the control is placed on standby).
5. A standby indicator light connected by electrical harness, placed on the vehicle dashboard, completes the device.

According to a variant, the computer program has an entry on a real-time weather website therefore making the system according to the invention not dependent on an exterior temperature probe. The device can be assembled as standard or be attached as a kit to an existing front and rear windshield wiper system of the motor vehicle. The programmed temperature thresholds can be in any known unit of measurement.

The present invention is in no way limited to the embodiments described and represented but those skilled in the art will be able to provide all the variations adapted to their mind. The device according to the invention is particularly intended for users of motor vehicles during winter.

Claims (9)

Front and rear windshield wiper device for a self-propelled land, air, sea or rail vehicle, intended to prevent the front windshields and rear windows from freezing during a prolonged period of parking, outside shelters, at low external temperatures, likely to freeze the windshields and rear windows of a vehicle, characterized in that an exterior temperature probe and an automatic program for triggering automatic sweeps of the front and rear windshield wiper arms of motor vehicles, are physically connected, via an electrical harness and are attached to a front and rear windshield wiper device of a self-propelled vehicle traditional and known from the state of the art and identically located on the vehicle, a digital manual control, these elements are connected directly to an electric battery embedded in the vehicle equipped with the device according to the invention, making said device, in standby mode, fully automatic and operational without contacting the vehicle or human action or presence, consequently during parking of said vehicle, if the temperature sensor detects an outside temperature likely to freeze its windshields and rear window, it alerts the automatic program which triggers short cycles at long and regular intervals of the motors and therefore of the front and rear windshield wiper arms according to a frequency of arm triggering cycles and a number of back and forth sweeps of said wiper arms, by activated cycles. Device according to claim 1 characterized in that in the ON position, the program no longer triggers automatic sweeping cycles of the front and rear windshield wiper arms of the vehicle, when the outside temperature rises to a (programmed) threshold. being more likely to cause the front windshields and rear windows of the said vehicle to freeze but nevertheless remain on standby. Device according to claim 1 characterized in that it is programmed to automatically go into total energy safety shutdown, after a certain standby period, if the engine of the vehicle equipped with said device has not been started before the end of the said period and whatever the outside temperature. Device according to claim 1 or claim 3 characterized in that it is programmed, when it is in the ON position, to return to standby after a total automatic shutdown activated by energy security and after a subsequent start of the vehicle engine of said engine stopping and whatever the outside temperature. Device according to claim 1 characterized in that it is programmed to automatically come to a complete stop when the engine of the vehicle equipped with said device is detected, even in the ON position and whatever the outside temperature. Device according to claim 1 characterized in that it is programmed, when it is in the ON position, to automatically return to standby after a total automatic shutdown deactivated by the starting of the engine of the equipped vehicle, when the said engine is again stopped, regardless of the outside temperature. Device according to any one of the preceding claims, characterized in that in the standby position, it is triggered automatically or remains on standby according to programmed temperature thresholds, whatever the value of these thresholds. Device according to claims 1, 2 and 7 characterized in that the programmed value of the triggering or stopping temperature thresholds of said device can be exterior or sheltered temperatures. Device according to any one of the claims, characterized in that its program has a computer input on a real-time weather data website, it will perceive the outside temperature.