1. An accessory support structure adapted to be installed on the rear end of an ATV, said ATV having a grid-like horizontal shelf extending crosswise across said ATV, said horizontal shelf having lower support rods extending downwardly into a chassis of said ATV and fastened thereto, said accessory support structure including two vertical upstanding support columns which are fastened to a forward edge of said horizontal shelf and at their lower ends are each fastened to said lower support rods of said shelf by way of horizontal braces being fastened at one of their ends to each of said vertical support columns and at their other ends are fastened to said lower support rods of said shelf, said lower ends of said vertical support columns having a forwardly extending support platform attached thereto to carry items placed thereon.
2. The accessory support structure of claim 1 including a multiple threaded screw extending between said two vertical support columns proximate an upper end thereof being capable of adjusting the distance between said columns.
3. The accessory support structure of claim 1, wherein one of the accessories carried by said extending support platform is a plurality of climber segments to be assembled into a climber stand, said climber segments are stacked to each other and fastened to said two upstanding vertical columns.
4. The accessory support structure of claim 2, wherein another one of said accessories carried by said ATV is an elongated ladder having lateral side bars, said ladder stand is carried in a horizontal position on said ATV when not in use and supported by said multiple threaded screw proximate one end of said ladder stand and being supported by braces approximate another end of said ladder stand.
5. The accessory support structure of claim 4, wherein said braces support said ladder stand at an upper end by way of U-bolts fastened to a rung of said ladder.
6. The accessory support structure of claim 5 including a platform attached to an upper end of said ladder stand, said platform will be in a horizontal position when said ladder stand is fully employed.
7. The accessory support structure of claim 6 including at least two braces attached to said platform and to said lateral side bars of said ladder stand to reinforce said platform.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A flame detector, comprising:
an infrared sensor for detecting an infrared ray;
waveform storing means for storing a plurality of waveforms detected from an output signal from the infrared sensor; and
waveform count determining means for determining that the waveforms are successively obtained when at least a first predetermined number of waveforms stored in the waveform storing means are produced for a first predetermined time and at least a second predetermined number of waveforms different from the first predetermined number of waveforms are produced for a second predetermined time different from the first predetermined time.
2. The flame detector according to claim 1, wherein the waveform count determining means is operable to recognize, as a single waveform, a change of the output signal from the infrared sensor which is caused between a start time when the level of the output signal exceeds a waveform detection level set to obtain a fluctuation waveform and a time when the level thereof becomes lower than the waveform detection level and stores the single waveform in the waveform storing means.
3. A flame detector, comprising:
an infrared sensor for detecting an infrared ray;
waveform detecting means for detecting waveforms from an output signal from the infrared sensor; and
waveform interval determining means for recognizing a time when a first waveform is to be detected by the waveform detecting means as a start point, successively detecting waveforms in a case where an interval between a time when detection of the first waveform starts and a time when a next waveform is detected is within a third predetermined time interval, and determining that the waveforms are successively obtained when a fourth predetermined time elapses from the start point.
4. The flame detector according to claim 3, wherein the waveform detecting means is operable to detect, as a start point of the first waveform, a time when a level of the output signal from the infrared sensor exceeds a wavelength detection level set to obtain a fluctuation waveform.
5. The flame detector according to claim 1,
wherein the infrared sensor comprises:
a main infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame; and
a sub infrared sensor for detecting an infrared ray including a wavelength band different from the specific wavelength band of the infrared ray detected by the main infrared sensor, and
wherein the wavelength count determining means is operable to determine, after it is determined that the waveforms are successively obtained, an occurrence or nonoccurrence of fire resulting from the flame based on a spectral ratio between a wavelength obtained from the main infrared sensor and a wavelength obtained from the sub infrared sensor.
6. A flame detector, comprising:
a main infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame;
a sub infrared sensor for detecting an infrared ray including a wavelength band different from the specific wavelength band of the infrared ray detected by the main infrared sensor;
calculating means for calculating an output ratio between a detection signal from the main infrared sensor and a detection signal from the sub infrared sensor; and
flame determining means for determining a presence of the flame based on that a plurality of output ratios calculated by the calculating means corresponds to a predetermined distribution state in which a first quantity of output ratios in the plurality of output ratios each have a value greater than or equal to a first predetermined value, a second quantity of output ratios in the plurality of output ratios each have a value greater than or equal to a second predetermined value, and in which each output ratio in the plurality of output ratios has a value greater than or equal to a third predetermined value.
7. A flame detector, comprising:
an infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame;
waveform data acquiring means for capturing a detection signal from the infrared sensor, and for assuming a time when a detection level of the detection signal exceeds a predetermined waveform determination level as a start point of a waveform and a time when the detection level becomes lower than the predetermined waveform determination level as an end point of the waveform so as to obtain a plurality of pulse waveform data items therefrom, the plurality of pulse waveform data items including at least one of a height and a width of each pulse waveform; and
flame determining means for determining a presence of the flame based on that the at least one of the height and the width of each pulse waveform included in the plurality of pulse waveform data items obtained by the waveform data acquiring means are in a predetermined distribution state.
8. The flame detector according to claim 7, wherein the flame determining means is operable to compare the at least one of the height and the width of each pulse waveform with at least one threshold value to determine each distribution.
9. The flame detector according to claim 2,
wherein the infrared sensor comprises:
a main infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame; and
a sub infrared sensor for detecting an infrared ray including a wavelength band different from the specific wavelength band of the infrared ray detected by the main infrared sensor, and
wherein the wavelength number count determining means is operable to determine, after it is determined that the waveforms are successively obtained, an occurrence or nonoccurrence of fire resulting from the flame based on a spectral ratio between a wavelength obtained from the main infrared sensor and a wavelength obtained from the sub infrared sensor.
10. The flame detector according to claim 3,
wherein the infrared sensor comprises:
a main infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame; and
a sub infrared sensor for detecting an infrared ray including a wavelength band different from the specific wavelength band of the infrared ray detected by the main infrared sensor, and
wherein the wavelength interval determining means is operable to determine, after it is determined that the waveforms are successively obtained, an occurrence or nonoccurrence of fire resulting from the flame based on a spectral ratio between a wavelength obtained from the main infrared sensor and a wavelength obtained from the sub infrared sensor.
11. The flame detector according to claim 4,
wherein the infrared sensor comprises:
a main infrared sensor for detecting an infrared ray including a specific wavelength band which is emitted from a flame; and
a sub infrared sensor for detecting an infrared ray including a wavelength band different from the specific wavelength band of the infrared ray detected by the main infrared sensor, and
wherein the wavelength interval determining means is operable to determine, after it is determined that the waveforms are successively obtained, an occurrence or nonoccurrence of fire resulting from the flame based on a spectral ratio between a wavelength obtained from the main infrared sensor and a wavelength obtained from the sub infrared sensor.
12. The flame detector according to claim 6, wherein the plurality of output ratios comprises 12 output ratios, the first quantity of output ratios comprises 2 or more output ratios, the first predetermined value is 3, the second quantity of output ratios comprises 4 or more output ratios, the second predetermined value is 2, and the third predetermined value is 1.